From 4c9d6c18fdebfcfb18918a656355a3c7c3d45e13 Mon Sep 17 00:00:00 2001 From: Sukadev Bhattiprolu Date: Thu, 3 Dec 2015 18:26:40 -0500 Subject: [PATCH 01/44] perf test: Remove 'core_id' check in topo test The topology test case of 'perf test' seems to be broken on my x86 system - due to the comparison of a "core-id" with # of CPUs online. There are 8 online CPUs: $ cat /sys/devices/system/cpu/online 0-7 but core-ids are not sequential and some core-ids exceed the number of online CPUs. $ cat /sys/devices/system/cpu/cpu?/topology/core_id 0 1 9 10 0 1 9 10 Looks like we can safely remove the check. Output before: $ perf --version perf version 4.4.rc1.g34258a $ perf test -v topo 36: Test topology in session : --- start --- test child forked, pid 5906 templ file: /tmp/perf-test-vCwWG3 core_id number is too big.You may need to upgrade the perf tool. test child interrupted ---- end ---- Test topology in session: FAILED! and after: $ perf test -v topo 36: Test topology in session : --- start --- test child forked, pid 6532 templ file: /tmp/perf-test-y10wFJ CPU 0, core 0, socket 0 CPU 1, core 1, socket 0 CPU 2, core 9, socket 0 CPU 3, core 10, socket 0 CPU 4, core 0, socket 1 CPU 5, core 1, socket 1 CPU 6, core 9, socket 1 CPU 7, core 10, socket 1 test child finished with 0 ---- end ---- Test topology in session: Ok Signed-off-by: Sukadev Bhattiprolu Cc: Jan Stancek Cc: Jiri Olsa Cc: Kan Liang Link: http://lkml.kernel.org/r/20151203233219.GA27696@us.ibm.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/header.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index 73e38e472ecd..90680ec9f8b8 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -1872,11 +1872,6 @@ static int process_cpu_topology(struct perf_file_section *section, if (ph->needs_swap) nr = bswap_32(nr); - if (nr > (u32)cpu_nr) { - pr_debug("core_id number is too big." - "You may need to upgrade the perf tool.\n"); - goto free_cpu; - } ph->env.cpu[i].core_id = nr; ret = readn(fd, &nr, sizeof(nr)); From ca70c24fb17b161a6096c584238cf81f664db45d Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Fri, 18 Mar 2016 13:57:20 -0300 Subject: [PATCH 02/44] tools: Move utilities.mak from perf to tools/scripts/ As it is used by several other tools, better move it outside tools/perf. Cc: Adrian Hunter Cc: Jiri Olsa Cc: Josh Poimboeuf Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-34s9kue3xq9w5mijdmfrfx8s@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/lib/api/Makefile | 2 +- tools/lib/subcmd/Makefile | 2 +- tools/perf/Documentation/Makefile | 2 +- tools/perf/Makefile.perf | 2 +- tools/perf/config/Makefile | 2 +- tools/{perf/config => scripts}/utilities.mak | 0 6 files changed, 5 insertions(+), 5 deletions(-) rename tools/{perf/config => scripts}/utilities.mak (100%) diff --git a/tools/lib/api/Makefile b/tools/lib/api/Makefile index bbc82c614bee..316f308a63ea 100644 --- a/tools/lib/api/Makefile +++ b/tools/lib/api/Makefile @@ -1,5 +1,5 @@ include ../../scripts/Makefile.include -include ../../perf/config/utilities.mak # QUIET_CLEAN +include ../../scripts/utilities.mak # QUIET_CLEAN ifeq ($(srctree),) srctree := $(patsubst %/,%,$(dir $(shell pwd))) diff --git a/tools/lib/subcmd/Makefile b/tools/lib/subcmd/Makefile index 629cf8c14e68..25b3f69f4364 100644 --- a/tools/lib/subcmd/Makefile +++ b/tools/lib/subcmd/Makefile @@ -1,5 +1,5 @@ include ../../scripts/Makefile.include -include ../../perf/config/utilities.mak # QUIET_CLEAN +include ../../scripts/utilities.mak # QUIET_CLEAN ifeq ($(srctree),) srctree := $(patsubst %/,%,$(dir $(shell pwd))) diff --git a/tools/perf/Documentation/Makefile b/tools/perf/Documentation/Makefile index 3ba1c0b09908..098cfb9ca8f0 100644 --- a/tools/perf/Documentation/Makefile +++ b/tools/perf/Documentation/Makefile @@ -1,5 +1,5 @@ include ../../scripts/Makefile.include -include ../config/utilities.mak +include ../../scripts/utilities.mak MAN1_TXT= \ $(filter-out $(addsuffix .txt, $(ARTICLES) $(SP_ARTICLES)), \ diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf index 4a4fad4182f5..000ea210389d 100644 --- a/tools/perf/Makefile.perf +++ b/tools/perf/Makefile.perf @@ -3,7 +3,7 @@ include ../scripts/Makefile.include # The default target of this Makefile is... all: -include config/utilities.mak +include ../scripts/utilities.mak # Define V to have a more verbose compile. # diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile index eca6a912e8c2..f7d7f5a1cad5 100644 --- a/tools/perf/config/Makefile +++ b/tools/perf/config/Makefile @@ -109,7 +109,7 @@ ifdef PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET CFLAGS += -DHAVE_ARCH_REGS_QUERY_REGISTER_OFFSET endif -include $(src-perf)/config/utilities.mak +include $(srctree)/tools/scripts/utilities.mak ifeq ($(call get-executable,$(FLEX)),) dummy := $(error Error: $(FLEX) is missing on this system, please install it) diff --git a/tools/perf/config/utilities.mak b/tools/scripts/utilities.mak similarity index 100% rename from tools/perf/config/utilities.mak rename to tools/scripts/utilities.mak From 73cdf0c6ea9c597894924f3b91ad636389555c1b Mon Sep 17 00:00:00 2001 From: Wang Nan Date: Fri, 26 Feb 2016 09:31:49 +0000 Subject: [PATCH 03/44] perf symbols: Record text offset in dso to calculate objdump address Store DSO's .text offset into DSO, used for VDSOs and will also be used for other needs, like handling kernel modules. Signed-off-by: Wang Nan Cc: Adrian Hunter Cc: Alexei Starovoitov Cc: Cody P Schafer Cc: He Kuang Cc: Jiri Olsa Cc: Kirill Smelkov Cc: Li Zefan Cc: Masami Hiramatsu Cc: Namhyung Kim Cc: Peter Zijlstra Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1456479154-136027-2-git-send-email-wangnan0@huawei.com [ Extracted from larger patch ] Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/dso.h | 1 + tools/perf/util/symbol-elf.c | 12 ++++++------ 2 files changed, 7 insertions(+), 6 deletions(-) diff --git a/tools/perf/util/dso.h b/tools/perf/util/dso.h index 45ec4d0a50ed..ef3dbc989013 100644 --- a/tools/perf/util/dso.h +++ b/tools/perf/util/dso.h @@ -162,6 +162,7 @@ struct dso { u8 loaded; u8 rel; u8 build_id[BUILD_ID_SIZE]; + u64 text_offset; const char *short_name; const char *long_name; u16 long_name_len; diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c index b1dd68f358fc..bc229a74c6a9 100644 --- a/tools/perf/util/symbol-elf.c +++ b/tools/perf/util/symbol-elf.c @@ -793,6 +793,7 @@ int dso__load_sym(struct dso *dso, struct map *map, uint32_t idx; GElf_Ehdr ehdr; GElf_Shdr shdr; + GElf_Shdr tshdr; Elf_Data *syms, *opddata = NULL; GElf_Sym sym; Elf_Scn *sec, *sec_strndx; @@ -832,6 +833,9 @@ int dso__load_sym(struct dso *dso, struct map *map, sec = syms_ss->symtab; shdr = syms_ss->symshdr; + if (elf_section_by_name(elf, &ehdr, &tshdr, ".text", NULL)) + dso->text_offset = tshdr.sh_addr - tshdr.sh_offset; + if (runtime_ss->opdsec) opddata = elf_rawdata(runtime_ss->opdsec, NULL); @@ -880,12 +884,8 @@ int dso__load_sym(struct dso *dso, struct map *map, * Handle any relocation of vdso necessary because older kernels * attempted to prelink vdso to its virtual address. */ - if (dso__is_vdso(dso)) { - GElf_Shdr tshdr; - - if (elf_section_by_name(elf, &ehdr, &tshdr, ".text", NULL)) - map->reloc = map->start - tshdr.sh_addr + tshdr.sh_offset; - } + if (dso__is_vdso(dso)) + map->reloc = map->start - dso->text_offset; dso->adjust_symbols = runtime_ss->adjust_symbols || ref_reloc(kmap); /* From 1e02cd40f15190b78fcc6b3f50c952fb4028e9a5 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Thu, 10 Mar 2016 15:39:24 +0100 Subject: [PATCH 04/44] perf/core: Fix the unthrottle logic Its possible to IOC_PERIOD while the event is throttled, this would re-start the event and the next tick would then try to unthrottle it, and find the event wasn't actually stopped anymore. This would tickle a WARN in the x86-pmu code which isn't expecting to start a !stopped event. Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Alexander Shishkin Cc: Andy Lutomirski Cc: Arnaldo Carvalho de Melo Cc: Borislav Petkov Cc: Brian Gerst Cc: David Ahern Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Jiri Olsa Cc: Linus Torvalds Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Thomas Gleixner Cc: Vince Weaver Cc: dvyukov@google.com Cc: oleg@redhat.com Cc: panand@redhat.com Cc: sasha.levin@oracle.com Cc: vince@deater.net Link: http://lkml.kernel.org/r/20160310143924.GR6356@twins.programming.kicks-ass.net Signed-off-by: Ingo Molnar --- kernel/events/core.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/kernel/events/core.c b/kernel/events/core.c index 712570dddacd..d39477390415 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -4210,6 +4210,14 @@ static void __perf_event_period(struct perf_event *event, active = (event->state == PERF_EVENT_STATE_ACTIVE); if (active) { perf_pmu_disable(ctx->pmu); + /* + * We could be throttled; unthrottle now to avoid the tick + * trying to unthrottle while we already re-started the event. + */ + if (event->hw.interrupts == MAX_INTERRUPTS) { + event->hw.interrupts = 0; + perf_log_throttle(event, 1); + } event->pmu->stop(event, PERF_EF_UPDATE); } From 0158b83f7508851cda9e62c4b14678c5bd492cb2 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Fri, 11 Mar 2016 15:23:46 +0100 Subject: [PATCH 05/44] perf/x86/ibs: Fix IBS throttle When the IBS IRQ handler get a !0 return from perf_event_overflow; meaning it should throttle the event, it only disables it, it doesn't call perf_ibs_stop(). This confuses the state machine, as we'll use pmu::start() -> perf_ibs_start() to unthrottle. Tested-by: Borislav Petkov Signed-off-by: Peter Zijlstra (Intel) Cc: Alexander Shishkin Cc: Andy Lutomirski Cc: Arnaldo Carvalho de Melo Cc: Brian Gerst Cc: David Ahern Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Jiri Olsa Cc: Linus Torvalds Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Thomas Gleixner Cc: Vince Weaver Cc: Vince Weaver Cc: dvyukov@google.com Cc: oleg@redhat.com Cc: panand@redhat.com Cc: sasha.levin@oracle.com Link: http://lkml.kernel.org/r/20160311142346.GE6344@twins.programming.kicks-ass.net Signed-off-by: Ingo Molnar --- arch/x86/events/amd/ibs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/events/amd/ibs.c b/arch/x86/events/amd/ibs.c index 51087c29b2c2..7956d29762ef 100644 --- a/arch/x86/events/amd/ibs.c +++ b/arch/x86/events/amd/ibs.c @@ -599,7 +599,7 @@ static int perf_ibs_handle_irq(struct perf_ibs *perf_ibs, struct pt_regs *iregs) throttle = perf_event_overflow(event, &data, ®s); out: if (throttle) - perf_ibs_disable_event(perf_ibs, hwc, *config); + perf_ibs_stop(event, 0); else perf_ibs_enable_event(perf_ibs, hwc, period >> 4); From 5a50f52917011365a4a2c0f1d2cea0990c4465cd Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Wed, 16 Mar 2016 23:55:21 +0100 Subject: [PATCH 06/44] perf/x86/ibs: Fix race with IBS_STARTING state While tracing the IBS bits I saw the NMI hitting between clearing IBS_STARTING and the actual MSR writes to disable the counter. Since IBS_STARTING was cleared, the handler assumed these were spurious NMIs and because STOPPING wasn't set yet either, insta-triggered an "Unknown NMI". Cure this by clearing IBS_STARTING after disabling the hardware. Tested-by: Borislav Petkov Signed-off-by: Peter Zijlstra (Intel) Cc: Alexander Shishkin Cc: Andy Lutomirski Cc: Arnaldo Carvalho de Melo Cc: Borislav Petkov Cc: Brian Gerst Cc: David Ahern Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Jiri Olsa Cc: Linus Torvalds Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Thomas Gleixner Cc: Vince Weaver Signed-off-by: Ingo Molnar --- arch/x86/events/amd/ibs.c | 32 +++++++++++++++++++++++++++++--- 1 file changed, 29 insertions(+), 3 deletions(-) diff --git a/arch/x86/events/amd/ibs.c b/arch/x86/events/amd/ibs.c index 7956d29762ef..c43a36d5fd6f 100644 --- a/arch/x86/events/amd/ibs.c +++ b/arch/x86/events/amd/ibs.c @@ -376,7 +376,13 @@ static void perf_ibs_start(struct perf_event *event, int flags) hwc->state = 0; perf_ibs_set_period(perf_ibs, hwc, &period); + /* + * Set STARTED before enabling the hardware, such that + * a subsequent NMI must observe it. Then clear STOPPING + * such that we don't consume NMIs by accident. + */ set_bit(IBS_STARTED, pcpu->state); + clear_bit(IBS_STOPPING, pcpu->state); perf_ibs_enable_event(perf_ibs, hwc, period >> 4); perf_event_update_userpage(event); @@ -390,7 +396,7 @@ static void perf_ibs_stop(struct perf_event *event, int flags) u64 config; int stopping; - stopping = test_and_clear_bit(IBS_STARTED, pcpu->state); + stopping = test_bit(IBS_STARTED, pcpu->state); if (!stopping && (hwc->state & PERF_HES_UPTODATE)) return; @@ -398,8 +404,24 @@ static void perf_ibs_stop(struct perf_event *event, int flags) rdmsrl(hwc->config_base, config); if (stopping) { + /* + * Set STOPPING before disabling the hardware, such that it + * must be visible to NMIs the moment we clear the EN bit, + * at which point we can generate an !VALID sample which + * we need to consume. + */ set_bit(IBS_STOPPING, pcpu->state); perf_ibs_disable_event(perf_ibs, hwc, config); + /* + * Clear STARTED after disabling the hardware; if it were + * cleared before an NMI hitting after the clear but before + * clearing the EN bit might think it a spurious NMI and not + * handle it. + * + * Clearing it after, however, creates the problem of the NMI + * handler seeing STARTED but not having a valid sample. + */ + clear_bit(IBS_STARTED, pcpu->state); WARN_ON_ONCE(hwc->state & PERF_HES_STOPPED); hwc->state |= PERF_HES_STOPPED; } @@ -527,20 +549,24 @@ static int perf_ibs_handle_irq(struct perf_ibs *perf_ibs, struct pt_regs *iregs) u64 *buf, *config, period; if (!test_bit(IBS_STARTED, pcpu->state)) { +fail: /* * Catch spurious interrupts after stopping IBS: After * disabling IBS there could be still incoming NMIs * with samples that even have the valid bit cleared. * Mark all this NMIs as handled. */ - return test_and_clear_bit(IBS_STOPPING, pcpu->state) ? 1 : 0; + if (test_and_clear_bit(IBS_STOPPING, pcpu->state)) + return 1; + + return 0; } msr = hwc->config_base; buf = ibs_data.regs; rdmsrl(msr, *buf); if (!(*buf++ & perf_ibs->valid_mask)) - return 0; + goto fail; config = &ibs_data.regs[0]; perf_ibs_event_update(perf_ibs, event, config); From c2872d381f1ab1bc39c7f044644bf1d3da7c11dd Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Thu, 17 Mar 2016 15:06:58 +0100 Subject: [PATCH 07/44] perf/x86/ibs: Add IBS interrupt to the dynamic throttle Interrupt throttling is normally only done against sysctl_perf_event_sample_rate. This means that if that number is too high (for whatever reason) you can lock up your machine. We have, however, a dynamic throttling scheme too, but for that to work, we need to add a callback to the interrupt handler, IBS did not have this, so add it. Signed-off-by: Peter Zijlstra (Intel) Cc: Alexander Shishkin Cc: Andy Lutomirski Cc: Arnaldo Carvalho de Melo Cc: Borislav Petkov Cc: Brian Gerst Cc: David Ahern Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Jiri Olsa Cc: Linus Torvalds Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Thomas Gleixner Cc: Vince Weaver Signed-off-by: Ingo Molnar --- arch/x86/events/amd/ibs.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/x86/events/amd/ibs.c b/arch/x86/events/amd/ibs.c index c43a36d5fd6f..3ea25c3917c0 100644 --- a/arch/x86/events/amd/ibs.c +++ b/arch/x86/events/amd/ibs.c @@ -637,6 +637,7 @@ static int perf_ibs_handle_irq(struct perf_ibs *perf_ibs, struct pt_regs *iregs) static int perf_ibs_nmi_handler(unsigned int cmd, struct pt_regs *regs) { + u64 stamp = sched_clock(); int handled = 0; handled += perf_ibs_handle_irq(&perf_ibs_fetch, regs); @@ -645,6 +646,8 @@ perf_ibs_nmi_handler(unsigned int cmd, struct pt_regs *regs) if (handled) inc_irq_stat(apic_perf_irqs); + perf_sample_event_took(sched_clock() - stamp); + return handled; } NOKPROBE_SYMBOL(perf_ibs_nmi_handler); From 91a612eea9a316c464cc170ff8492ec09e7d1c69 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Thu, 17 Mar 2016 15:17:35 +0100 Subject: [PATCH 08/44] perf/core: Fix dynamic interrupt throttle There were two problems with the dynamic interrupt throttle mechanism, both triggered by the same action. When you (or perf_fuzzer) write a huge value into /proc/sys/kernel/perf_event_max_sample_rate the computed perf_sample_allowed_ns becomes 0. This effectively disables the whole dynamic throttle. This is fixed by ensuring update_perf_cpu_limits() never sets the value to 0. However, we allow disabling of the dynamic throttle by writing 100 to /proc/sys/kernel/perf_cpu_time_max_percent. This will generate a warning in dmesg. The second problem is that by setting the max_sample_rate to a huge number, the adaptive process can take a few tries, since it halfs the limit each time. Change that to directly compute a new value based on the observed duration. Signed-off-by: Peter Zijlstra (Intel) Cc: Alexander Shishkin Cc: Andy Lutomirski Cc: Arnaldo Carvalho de Melo Cc: Borislav Petkov Cc: Brian Gerst Cc: David Ahern Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Jiri Olsa Cc: Linus Torvalds Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Thomas Gleixner Cc: Vince Weaver Signed-off-by: Ingo Molnar --- kernel/events/core.c | 87 ++++++++++++++++++++++++++------------------ 1 file changed, 51 insertions(+), 36 deletions(-) diff --git a/kernel/events/core.c b/kernel/events/core.c index d39477390415..43e35faf576e 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -376,8 +376,11 @@ static void update_perf_cpu_limits(void) u64 tmp = perf_sample_period_ns; tmp *= sysctl_perf_cpu_time_max_percent; - do_div(tmp, 100); - ACCESS_ONCE(perf_sample_allowed_ns) = tmp; + tmp = div_u64(tmp, 100); + if (!tmp) + tmp = 1; + + WRITE_ONCE(perf_sample_allowed_ns, tmp); } static int perf_rotate_context(struct perf_cpu_context *cpuctx); @@ -409,7 +412,13 @@ int perf_cpu_time_max_percent_handler(struct ctl_table *table, int write, if (ret || !write) return ret; - update_perf_cpu_limits(); + if (sysctl_perf_cpu_time_max_percent == 100) { + printk(KERN_WARNING + "perf: Dynamic interrupt throttling disabled, can hang your system!\n"); + WRITE_ONCE(perf_sample_allowed_ns, 0); + } else { + update_perf_cpu_limits(); + } return 0; } @@ -423,62 +432,68 @@ int perf_cpu_time_max_percent_handler(struct ctl_table *table, int write, #define NR_ACCUMULATED_SAMPLES 128 static DEFINE_PER_CPU(u64, running_sample_length); +static u64 __report_avg; +static u64 __report_allowed; + static void perf_duration_warn(struct irq_work *w) { - u64 allowed_ns = ACCESS_ONCE(perf_sample_allowed_ns); - u64 avg_local_sample_len; - u64 local_samples_len; - - local_samples_len = __this_cpu_read(running_sample_length); - avg_local_sample_len = local_samples_len/NR_ACCUMULATED_SAMPLES; - printk_ratelimited(KERN_WARNING - "perf interrupt took too long (%lld > %lld), lowering " - "kernel.perf_event_max_sample_rate to %d\n", - avg_local_sample_len, allowed_ns >> 1, - sysctl_perf_event_sample_rate); + "perf: interrupt took too long (%lld > %lld), lowering " + "kernel.perf_event_max_sample_rate to %d\n", + __report_avg, __report_allowed, + sysctl_perf_event_sample_rate); } static DEFINE_IRQ_WORK(perf_duration_work, perf_duration_warn); void perf_sample_event_took(u64 sample_len_ns) { - u64 allowed_ns = ACCESS_ONCE(perf_sample_allowed_ns); - u64 avg_local_sample_len; - u64 local_samples_len; + u64 max_len = READ_ONCE(perf_sample_allowed_ns); + u64 running_len; + u64 avg_len; + u32 max; - if (allowed_ns == 0) + if (max_len == 0) return; - /* decay the counter by 1 average sample */ - local_samples_len = __this_cpu_read(running_sample_length); - local_samples_len -= local_samples_len/NR_ACCUMULATED_SAMPLES; - local_samples_len += sample_len_ns; - __this_cpu_write(running_sample_length, local_samples_len); + /* Decay the counter by 1 average sample. */ + running_len = __this_cpu_read(running_sample_length); + running_len -= running_len/NR_ACCUMULATED_SAMPLES; + running_len += sample_len_ns; + __this_cpu_write(running_sample_length, running_len); /* - * note: this will be biased artifically low until we have - * seen NR_ACCUMULATED_SAMPLES. Doing it this way keeps us + * Note: this will be biased artifically low until we have + * seen NR_ACCUMULATED_SAMPLES. Doing it this way keeps us * from having to maintain a count. */ - avg_local_sample_len = local_samples_len/NR_ACCUMULATED_SAMPLES; - - if (avg_local_sample_len <= allowed_ns) + avg_len = running_len/NR_ACCUMULATED_SAMPLES; + if (avg_len <= max_len) return; - if (max_samples_per_tick <= 1) - return; + __report_avg = avg_len; + __report_allowed = max_len; - max_samples_per_tick = DIV_ROUND_UP(max_samples_per_tick, 2); - sysctl_perf_event_sample_rate = max_samples_per_tick * HZ; + /* + * Compute a throttle threshold 25% below the current duration. + */ + avg_len += avg_len / 4; + max = (TICK_NSEC / 100) * sysctl_perf_cpu_time_max_percent; + if (avg_len < max) + max /= (u32)avg_len; + else + max = 1; + + WRITE_ONCE(perf_sample_allowed_ns, avg_len); + WRITE_ONCE(max_samples_per_tick, max); + + sysctl_perf_event_sample_rate = max * HZ; perf_sample_period_ns = NSEC_PER_SEC / sysctl_perf_event_sample_rate; - update_perf_cpu_limits(); - if (!irq_work_queue(&perf_duration_work)) { - early_printk("perf interrupt took too long (%lld > %lld), lowering " + early_printk("perf: interrupt took too long (%lld > %lld), lowering " "kernel.perf_event_max_sample_rate to %d\n", - avg_local_sample_len, allowed_ns >> 1, + __report_avg, __report_allowed, sysctl_perf_event_sample_rate); } } From e8d8a90fc5014e4cdcf1de2f320081d26c7f440f Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Fri, 18 Mar 2016 17:31:27 +0100 Subject: [PATCH 09/44] perf/x86/BTS: Fix RCU usage This splat reminds us: [ 8166.045595] [ INFO: suspicious RCU usage. ] [ 8166.168972] [] lockdep_rcu_suspicious+0xe7/0x120 [ 8166.175966] [] perf_callchain+0x23e/0x250 [ 8166.182280] [] perf_prepare_sample+0x27d/0x350 [ 8166.189082] [] intel_pmu_drain_bts_buffer+0x133/0x200 ... that as the core code does, one should hold rcu_read_lock() over that entire BTS event-output generation sequence as well. Signed-off-by: Peter Zijlstra (Intel) Cc: Alexander Shishkin Cc: Andy Lutomirski Cc: Arnaldo Carvalho de Melo Cc: Borislav Petkov Cc: Brian Gerst Cc: David Ahern Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Jiri Olsa Cc: Linus Torvalds Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Thomas Gleixner Cc: Vince Weaver Signed-off-by: Ingo Molnar --- arch/x86/events/intel/ds.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/x86/events/intel/ds.c b/arch/x86/events/intel/ds.c index ce7211a07c0b..8584b90d8e0b 100644 --- a/arch/x86/events/intel/ds.c +++ b/arch/x86/events/intel/ds.c @@ -570,11 +570,12 @@ int intel_pmu_drain_bts_buffer(void) * We will overwrite the from and to address before we output * the sample. */ + rcu_read_lock(); perf_prepare_sample(&header, &data, event, ®s); if (perf_output_begin(&handle, event, header.size * (top - base - skip))) - return 1; + goto unlock; for (at = base; at < top; at++) { /* Filter out any records that contain kernel addresses. */ @@ -593,6 +594,8 @@ int intel_pmu_drain_bts_buffer(void) /* There's new data available. */ event->hw.interrupts++; event->pending_kill = POLL_IN; +unlock: + rcu_read_unlock(); return 1; } From 8184059e93c200757f5c0805dae0f14e880eab5d Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Fri, 29 Jan 2016 15:17:51 +0100 Subject: [PATCH 10/44] perf/core: Fix Undefined behaviour in rb_alloc() Sasha reported: [ 3494.030114] UBSAN: Undefined behaviour in kernel/events/ring_buffer.c:685:22 [ 3494.030647] shift exponent -1 is negative Andrey spotted that this is because: It happens if nr_pages = 0: rb->page_order = ilog2(nr_pages); Fix it by making both assignments conditional on nr_pages; since otherwise they should both be 0 anyway, and will be because of the kzalloc() used to allocate the structure. Reported-by: Sasha Levin Reported-by: Andrey Ryabinin Signed-off-by: Peter Zijlstra (Intel) Cc: Alexander Shishkin Cc: Andy Lutomirski Cc: Arnaldo Carvalho de Melo Cc: Arnaldo Carvalho de Melo Cc: Borislav Petkov Cc: Brian Gerst Cc: David Ahern Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Jiri Olsa Cc: Linus Torvalds Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Thomas Gleixner Cc: Vince Weaver Link: http://lkml.kernel.org/r/20160129141751.GA407@worktop Signed-off-by: Ingo Molnar --- kernel/events/ring_buffer.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/kernel/events/ring_buffer.c b/kernel/events/ring_buffer.c index 1faad2cfdb9e..c61f0cbd308b 100644 --- a/kernel/events/ring_buffer.c +++ b/kernel/events/ring_buffer.c @@ -746,8 +746,10 @@ struct ring_buffer *rb_alloc(int nr_pages, long watermark, int cpu, int flags) rb->user_page = all_buf; rb->data_pages[0] = all_buf + PAGE_SIZE; - rb->page_order = ilog2(nr_pages); - rb->nr_pages = !!nr_pages; + if (nr_pages) { + rb->nr_pages = 1; + rb->page_order = ilog2(nr_pages); + } ring_buffer_init(rb, watermark, flags); From a223c1c7ab4cc64537dc4b911f760d851683768a Mon Sep 17 00:00:00 2001 From: Vikas Shivappa Date: Thu, 10 Mar 2016 15:32:07 -0800 Subject: [PATCH 11/44] perf/x86/cqm: Fix CQM handling of grouping events into a cache_group Currently CQM (cache quality of service monitoring) is grouping all events belonging to same PID to use one RMID. However its not counting all of these different events. Hence we end up with a count of zero for all events other than the group leader. The patch tries to address the issue by keeping a flag in the perf_event.hw which has other CQM related fields. The field is updated at event creation and during grouping. Signed-off-by: Vikas Shivappa [peterz: Changed hw_perf_event::is_group_event to an int] Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Tony Luck Acked-by: Thomas Gleixner Cc: Alexander Shishkin Cc: Andy Lutomirski Cc: Arnaldo Carvalho de Melo Cc: Borislav Petkov Cc: Brian Gerst Cc: David Ahern Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Jiri Olsa Cc: Linus Torvalds Cc: Matt Fleming Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Vince Weaver Cc: fenghua.yu@intel.com Cc: h.peter.anvin@intel.com Cc: ravi.v.shankar@intel.com Cc: vikas.shivappa@intel.com Link: http://lkml.kernel.org/r/1457652732-4499-2-git-send-email-vikas.shivappa@linux.intel.com Signed-off-by: Ingo Molnar --- arch/x86/events/intel/cqm.c | 13 ++++++++++--- include/linux/perf_event.h | 1 + 2 files changed, 11 insertions(+), 3 deletions(-) diff --git a/arch/x86/events/intel/cqm.c b/arch/x86/events/intel/cqm.c index 93cb412a5579..b0226f1912a2 100644 --- a/arch/x86/events/intel/cqm.c +++ b/arch/x86/events/intel/cqm.c @@ -281,9 +281,13 @@ static bool __match_event(struct perf_event *a, struct perf_event *b) /* * Events that target same task are placed into the same cache group. + * Mark it as a multi event group, so that we update ->count + * for every event rather than just the group leader later. */ - if (a->hw.target == b->hw.target) + if (a->hw.target == b->hw.target) { + b->hw.is_group_event = true; return true; + } /* * Are we an inherited event? @@ -849,6 +853,7 @@ static void intel_cqm_setup_event(struct perf_event *event, bool conflict = false; u32 rmid; + event->hw.is_group_event = false; list_for_each_entry(iter, &cache_groups, hw.cqm_groups_entry) { rmid = iter->hw.cqm_rmid; @@ -940,7 +945,9 @@ static u64 intel_cqm_event_count(struct perf_event *event) return __perf_event_count(event); /* - * Only the group leader gets to report values. This stops us + * Only the group leader gets to report values except in case of + * multiple events in the same group, we still need to read the + * other events.This stops us * reporting duplicate values to userspace, and gives us a clear * rule for which task gets to report the values. * @@ -948,7 +955,7 @@ static u64 intel_cqm_event_count(struct perf_event *event) * specific packages - we forfeit that ability when we create * task events. */ - if (!cqm_group_leader(event)) + if (!cqm_group_leader(event) && !event->hw.is_group_event) return 0; /* diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 79ec7bbf0155..7bb315bec3aa 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -121,6 +121,7 @@ struct hw_perf_event { struct { /* intel_cqm */ int cqm_state; u32 cqm_rmid; + int is_group_event; struct list_head cqm_events_entry; struct list_head cqm_groups_entry; struct list_head cqm_group_entry; From ada2f634cd50d050269b67b4e2966582387e7c27 Mon Sep 17 00:00:00 2001 From: Vikas Shivappa Date: Thu, 10 Mar 2016 15:32:08 -0800 Subject: [PATCH 12/44] perf/x86/cqm: Fix CQM memory leak and notifier leak Fixes the hotcpu notifier leak and other global variable memory leaks during CQM (cache quality of service monitoring) initialization. Signed-off-by: Vikas Shivappa Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Tony Luck Acked-by: Thomas Gleixner Cc: Alexander Shishkin Cc: Andy Lutomirski Cc: Arnaldo Carvalho de Melo Cc: Borislav Petkov Cc: Brian Gerst Cc: David Ahern Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Jiri Olsa Cc: Linus Torvalds Cc: Matt Fleming Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Vince Weaver Cc: fenghua.yu@intel.com Cc: h.peter.anvin@intel.com Cc: ravi.v.shankar@intel.com Cc: vikas.shivappa@intel.com Link: http://lkml.kernel.org/r/1457652732-4499-3-git-send-email-vikas.shivappa@linux.intel.com Signed-off-by: Ingo Molnar --- arch/x86/events/intel/cqm.c | 43 +++++++++++++++++++++++++++---------- 1 file changed, 32 insertions(+), 11 deletions(-) diff --git a/arch/x86/events/intel/cqm.c b/arch/x86/events/intel/cqm.c index b0226f1912a2..dbb058d2910a 100644 --- a/arch/x86/events/intel/cqm.c +++ b/arch/x86/events/intel/cqm.c @@ -211,6 +211,20 @@ static void __put_rmid(u32 rmid) list_add_tail(&entry->list, &cqm_rmid_limbo_lru); } +static void cqm_cleanup(void) +{ + int i; + + if (!cqm_rmid_ptrs) + return; + + for (i = 0; i < cqm_max_rmid; i++) + kfree(cqm_rmid_ptrs[i]); + + kfree(cqm_rmid_ptrs); + cqm_rmid_ptrs = NULL; +} + static int intel_cqm_setup_rmid_cache(void) { struct cqm_rmid_entry *entry; @@ -218,7 +232,7 @@ static int intel_cqm_setup_rmid_cache(void) int r = 0; nr_rmids = cqm_max_rmid + 1; - cqm_rmid_ptrs = kmalloc(sizeof(struct cqm_rmid_entry *) * + cqm_rmid_ptrs = kzalloc(sizeof(struct cqm_rmid_entry *) * nr_rmids, GFP_KERNEL); if (!cqm_rmid_ptrs) return -ENOMEM; @@ -249,11 +263,9 @@ static int intel_cqm_setup_rmid_cache(void) mutex_unlock(&cache_mutex); return 0; -fail: - while (r--) - kfree(cqm_rmid_ptrs[r]); - kfree(cqm_rmid_ptrs); +fail: + cqm_cleanup(); return -ENOMEM; } @@ -1312,7 +1324,7 @@ static const struct x86_cpu_id intel_cqm_match[] = { static int __init intel_cqm_init(void) { - char *str, scale[20]; + char *str = NULL, scale[20]; int i, cpu, ret; if (!x86_match_cpu(intel_cqm_match)) @@ -1372,16 +1384,25 @@ static int __init intel_cqm_init(void) cqm_pick_event_reader(i); } - __perf_cpu_notifier(intel_cqm_cpu_notifier); - ret = perf_pmu_register(&intel_cqm_pmu, "intel_cqm", -1); - if (ret) + if (ret) { pr_err("Intel CQM perf registration failed: %d\n", ret); - else - pr_info("Intel CQM monitoring enabled\n"); + goto out; + } + pr_info("Intel CQM monitoring enabled\n"); + + /* + * Register the hot cpu notifier once we are sure cqm + * is enabled to avoid notifier leak. + */ + __perf_cpu_notifier(intel_cqm_cpu_notifier); out: cpu_notifier_register_done(); + if (ret) { + kfree(str); + cqm_cleanup(); + } return ret; } From 33c3cc7acfd95968d74247f1a4e1b0727a07ed43 Mon Sep 17 00:00:00 2001 From: Vikas Shivappa Date: Thu, 10 Mar 2016 15:32:09 -0800 Subject: [PATCH 13/44] perf/x86/mbm: Add Intel Memory B/W Monitoring enumeration and init The MBM init patch enumerates the Intel MBM (Memory b/w monitoring) and initializes the perf events and datastructures for monitoring the memory b/w. Its based on original patch series by Tony Luck and Kanaka Juvva. Memory bandwidth monitoring (MBM) provides OS/VMM a way to monitor bandwidth from one level of cache to another. The current patches support L3 external bandwidth monitoring. It supports both 'local bandwidth' and 'total bandwidth' monitoring for the socket. Local bandwidth measures the amount of data sent through the memory controller on the socket and total b/w measures the total system bandwidth. Extending the cache quality of service monitoring (CQM) we add two more events to the perf infrastructure: intel_cqm_llc/local_bytes - bytes sent through local socket memory controller intel_cqm_llc/total_bytes - total L3 external bytes sent The tasks are associated with a Resouce Monitoring ID (RMID) just like in CQM and OS uses a MSR write to indicate the RMID of the task during scheduling. Signed-off-by: Vikas Shivappa Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Tony Luck Acked-by: Thomas Gleixner Cc: Alexander Shishkin Cc: Andy Lutomirski Cc: Arnaldo Carvalho de Melo Cc: Borislav Petkov Cc: Brian Gerst Cc: David Ahern Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Jiri Olsa Cc: Linus Torvalds Cc: Matt Fleming Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Vince Weaver Cc: fenghua.yu@intel.com Cc: h.peter.anvin@intel.com Cc: ravi.v.shankar@intel.com Cc: vikas.shivappa@intel.com Link: http://lkml.kernel.org/r/1457652732-4499-4-git-send-email-vikas.shivappa@linux.intel.com Signed-off-by: Ingo Molnar --- arch/x86/events/intel/cqm.c | 126 ++++++++++++++++++++++++++++- arch/x86/include/asm/cpufeatures.h | 2 + arch/x86/kernel/cpu/common.c | 4 +- 3 files changed, 128 insertions(+), 4 deletions(-) diff --git a/arch/x86/events/intel/cqm.c b/arch/x86/events/intel/cqm.c index dbb058d2910a..515df11e65bb 100644 --- a/arch/x86/events/intel/cqm.c +++ b/arch/x86/events/intel/cqm.c @@ -15,6 +15,7 @@ static u32 cqm_max_rmid = -1; static unsigned int cqm_l3_scale; /* supposedly cacheline size */ +static bool cqm_enabled, mbm_enabled; /** * struct intel_pqr_state - State cache for the PQR MSR @@ -42,6 +43,24 @@ struct intel_pqr_state { * interrupts disabled, which is sufficient for the protection. */ static DEFINE_PER_CPU(struct intel_pqr_state, pqr_state); +/** + * struct sample - mbm event's (local or total) data + * @total_bytes #bytes since we began monitoring + * @prev_msr previous value of MSR + */ +struct sample { + u64 total_bytes; + u64 prev_msr; +}; + +/* + * samples profiled for total memory bandwidth type events + */ +static struct sample *mbm_total; +/* + * samples profiled for local memory bandwidth type events + */ +static struct sample *mbm_local; /* * Protects cache_cgroups and cqm_rmid_free_lru and cqm_rmid_limbo_lru. @@ -223,6 +242,7 @@ static void cqm_cleanup(void) kfree(cqm_rmid_ptrs); cqm_rmid_ptrs = NULL; + cqm_enabled = false; } static int intel_cqm_setup_rmid_cache(void) @@ -1164,6 +1184,16 @@ EVENT_ATTR_STR(llc_occupancy.unit, intel_cqm_llc_unit, "Bytes"); EVENT_ATTR_STR(llc_occupancy.scale, intel_cqm_llc_scale, NULL); EVENT_ATTR_STR(llc_occupancy.snapshot, intel_cqm_llc_snapshot, "1"); +EVENT_ATTR_STR(total_bytes, intel_cqm_total_bytes, "event=0x02"); +EVENT_ATTR_STR(total_bytes.per-pkg, intel_cqm_total_bytes_pkg, "1"); +EVENT_ATTR_STR(total_bytes.unit, intel_cqm_total_bytes_unit, "MB"); +EVENT_ATTR_STR(total_bytes.scale, intel_cqm_total_bytes_scale, "1e-6"); + +EVENT_ATTR_STR(local_bytes, intel_cqm_local_bytes, "event=0x03"); +EVENT_ATTR_STR(local_bytes.per-pkg, intel_cqm_local_bytes_pkg, "1"); +EVENT_ATTR_STR(local_bytes.unit, intel_cqm_local_bytes_unit, "MB"); +EVENT_ATTR_STR(local_bytes.scale, intel_cqm_local_bytes_scale, "1e-6"); + static struct attribute *intel_cqm_events_attr[] = { EVENT_PTR(intel_cqm_llc), EVENT_PTR(intel_cqm_llc_pkg), @@ -1173,9 +1203,38 @@ static struct attribute *intel_cqm_events_attr[] = { NULL, }; +static struct attribute *intel_mbm_events_attr[] = { + EVENT_PTR(intel_cqm_total_bytes), + EVENT_PTR(intel_cqm_local_bytes), + EVENT_PTR(intel_cqm_total_bytes_pkg), + EVENT_PTR(intel_cqm_local_bytes_pkg), + EVENT_PTR(intel_cqm_total_bytes_unit), + EVENT_PTR(intel_cqm_local_bytes_unit), + EVENT_PTR(intel_cqm_total_bytes_scale), + EVENT_PTR(intel_cqm_local_bytes_scale), + NULL, +}; + +static struct attribute *intel_cmt_mbm_events_attr[] = { + EVENT_PTR(intel_cqm_llc), + EVENT_PTR(intel_cqm_total_bytes), + EVENT_PTR(intel_cqm_local_bytes), + EVENT_PTR(intel_cqm_llc_pkg), + EVENT_PTR(intel_cqm_total_bytes_pkg), + EVENT_PTR(intel_cqm_local_bytes_pkg), + EVENT_PTR(intel_cqm_llc_unit), + EVENT_PTR(intel_cqm_total_bytes_unit), + EVENT_PTR(intel_cqm_local_bytes_unit), + EVENT_PTR(intel_cqm_llc_scale), + EVENT_PTR(intel_cqm_total_bytes_scale), + EVENT_PTR(intel_cqm_local_bytes_scale), + EVENT_PTR(intel_cqm_llc_snapshot), + NULL, +}; + static struct attribute_group intel_cqm_events_group = { .name = "events", - .attrs = intel_cqm_events_attr, + .attrs = NULL, }; PMU_FORMAT_ATTR(event, "config:0-7"); @@ -1322,12 +1381,57 @@ static const struct x86_cpu_id intel_cqm_match[] = { {} }; +static void mbm_cleanup(void) +{ + if (!mbm_enabled) + return; + + kfree(mbm_local); + kfree(mbm_total); + mbm_enabled = false; +} + +static const struct x86_cpu_id intel_mbm_local_match[] = { + { .vendor = X86_VENDOR_INTEL, .feature = X86_FEATURE_CQM_MBM_LOCAL }, + {} +}; + +static const struct x86_cpu_id intel_mbm_total_match[] = { + { .vendor = X86_VENDOR_INTEL, .feature = X86_FEATURE_CQM_MBM_TOTAL }, + {} +}; + +static int intel_mbm_init(void) +{ + int array_size, maxid = cqm_max_rmid + 1; + + array_size = sizeof(struct sample) * maxid * topology_max_packages(); + mbm_local = kmalloc(array_size, GFP_KERNEL); + if (!mbm_local) + return -ENOMEM; + + mbm_total = kmalloc(array_size, GFP_KERNEL); + if (!mbm_total) { + mbm_cleanup(); + return -ENOMEM; + } + + return 0; +} + static int __init intel_cqm_init(void) { char *str = NULL, scale[20]; int i, cpu, ret; - if (!x86_match_cpu(intel_cqm_match)) + if (x86_match_cpu(intel_cqm_match)) + cqm_enabled = true; + + if (x86_match_cpu(intel_mbm_local_match) && + x86_match_cpu(intel_mbm_total_match)) + mbm_enabled = true; + + if (!cqm_enabled && !mbm_enabled) return -ENODEV; cqm_l3_scale = boot_cpu_data.x86_cache_occ_scale; @@ -1384,13 +1488,28 @@ static int __init intel_cqm_init(void) cqm_pick_event_reader(i); } + if (mbm_enabled) + ret = intel_mbm_init(); + if (ret && !cqm_enabled) + goto out; + + if (cqm_enabled && mbm_enabled) + intel_cqm_events_group.attrs = intel_cmt_mbm_events_attr; + else if (!cqm_enabled && mbm_enabled) + intel_cqm_events_group.attrs = intel_mbm_events_attr; + else if (cqm_enabled && !mbm_enabled) + intel_cqm_events_group.attrs = intel_cqm_events_attr; + ret = perf_pmu_register(&intel_cqm_pmu, "intel_cqm", -1); if (ret) { pr_err("Intel CQM perf registration failed: %d\n", ret); goto out; } - pr_info("Intel CQM monitoring enabled\n"); + if (cqm_enabled) + pr_info("Intel CQM monitoring enabled\n"); + if (mbm_enabled) + pr_info("Intel MBM enabled\n"); /* * Register the hot cpu notifier once we are sure cqm @@ -1402,6 +1521,7 @@ static int __init intel_cqm_init(void) if (ret) { kfree(str); cqm_cleanup(); + mbm_cleanup(); } return ret; diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h index 074b7604bd51..746dd6ae4932 100644 --- a/arch/x86/include/asm/cpufeatures.h +++ b/arch/x86/include/asm/cpufeatures.h @@ -245,6 +245,8 @@ /* Intel-defined CPU QoS Sub-leaf, CPUID level 0x0000000F:1 (edx), word 12 */ #define X86_FEATURE_CQM_OCCUP_LLC (12*32+ 0) /* LLC occupancy monitoring if 1 */ +#define X86_FEATURE_CQM_MBM_TOTAL (12*32+ 1) /* LLC Total MBM monitoring */ +#define X86_FEATURE_CQM_MBM_LOCAL (12*32+ 2) /* LLC Local MBM monitoring */ /* AMD-defined CPU features, CPUID level 0x80000008 (ebx), word 13 */ #define X86_FEATURE_CLZERO (13*32+0) /* CLZERO instruction */ diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index 62590aa064c8..e601c1286e29 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -649,7 +649,9 @@ void get_cpu_cap(struct cpuinfo_x86 *c) cpuid_count(0x0000000F, 1, &eax, &ebx, &ecx, &edx); c->x86_capability[CPUID_F_1_EDX] = edx; - if (cpu_has(c, X86_FEATURE_CQM_OCCUP_LLC)) { + if ((cpu_has(c, X86_FEATURE_CQM_OCCUP_LLC)) || + ((cpu_has(c, X86_FEATURE_CQM_MBM_TOTAL)) || + (cpu_has(c, X86_FEATURE_CQM_MBM_LOCAL)))) { c->x86_cache_max_rmid = ecx; c->x86_cache_occ_scale = ebx; } From 87f01cc2a2914b61ade5ec834377fa7819484173 Mon Sep 17 00:00:00 2001 From: Tony Luck Date: Fri, 11 Mar 2016 11:26:11 -0800 Subject: [PATCH 14/44] perf/x86/mbm: Add memory bandwidth monitoring event management Includes all the core infrastructure to measure the total_bytes and bandwidth. We have per socket counters for both total system wide L3 external bytes and local socket memory-controller bytes. The OS does MSR writes to MSR_IA32_QM_EVTSEL and MSR_IA32_QM_CTR to read the counters and uses the IA32_PQR_ASSOC_MSR to associate the RMID with the task. The tasks have a common RMID for CQM (cache quality of service monitoring) and MBM. Hence most of the scheduling code is reused from CQM. Signed-off-by: Tony Luck [ Restructured rmid_read to not have an obvious hole, removed MBM_CNTR_MAX as its unused. ] Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Vikas Shivappa Acked-by: Thomas Gleixner Cc: Alexander Shishkin Cc: Andy Lutomirski Cc: Arnaldo Carvalho de Melo Cc: Borislav Petkov Cc: Brian Gerst Cc: David Ahern Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Jiri Olsa Cc: Linus Torvalds Cc: Matt Fleming Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Vince Weaver Cc: fenghua.yu@intel.com Cc: h.peter.anvin@intel.com Cc: ravi.v.shankar@intel.com Cc: vikas.shivappa@intel.com Link: http://lkml.kernel.org/r/abd7aac9a18d93b95b985b931cf258df0164746d.1457723885.git.tony.luck@intel.com Signed-off-by: Ingo Molnar --- arch/x86/events/intel/cqm.c | 122 ++++++++++++++++++++++++++++++++++-- 1 file changed, 116 insertions(+), 6 deletions(-) diff --git a/arch/x86/events/intel/cqm.c b/arch/x86/events/intel/cqm.c index 515df11e65bb..610bd8ab37e4 100644 --- a/arch/x86/events/intel/cqm.c +++ b/arch/x86/events/intel/cqm.c @@ -13,6 +13,8 @@ #define MSR_IA32_QM_CTR 0x0c8e #define MSR_IA32_QM_EVTSEL 0x0c8d +#define MBM_CNTR_WIDTH 24 + static u32 cqm_max_rmid = -1; static unsigned int cqm_l3_scale; /* supposedly cacheline size */ static bool cqm_enabled, mbm_enabled; @@ -62,6 +64,16 @@ static struct sample *mbm_total; */ static struct sample *mbm_local; +#define pkg_id topology_physical_package_id(smp_processor_id()) +/* + * rmid_2_index returns the index for the rmid in mbm_local/mbm_total array. + * mbm_total[] and mbm_local[] are linearly indexed by socket# * max number of + * rmids per socket, an example is given below + * RMID1 of Socket0: vrmid = 1 + * RMID1 of Socket1: vrmid = 1 * (cqm_max_rmid + 1) + 1 + * RMID1 of Socket2: vrmid = 2 * (cqm_max_rmid + 1) + 1 + */ +#define rmid_2_index(rmid) ((pkg_id * (cqm_max_rmid + 1)) + rmid) /* * Protects cache_cgroups and cqm_rmid_free_lru and cqm_rmid_limbo_lru. * Also protects event->hw.cqm_rmid @@ -84,9 +96,13 @@ static cpumask_t cqm_cpumask; #define RMID_VAL_ERROR (1ULL << 63) #define RMID_VAL_UNAVAIL (1ULL << 62) -#define QOS_L3_OCCUP_EVENT_ID (1 << 0) - -#define QOS_EVENT_MASK QOS_L3_OCCUP_EVENT_ID +/* + * Event IDs are used to program IA32_QM_EVTSEL before reading event + * counter from IA32_QM_CTR + */ +#define QOS_L3_OCCUP_EVENT_ID 0x01 +#define QOS_MBM_TOTAL_EVENT_ID 0x02 +#define QOS_MBM_LOCAL_EVENT_ID 0x03 /* * This is central to the rotation algorithm in __intel_cqm_rmid_rotate(). @@ -428,10 +444,17 @@ static bool __conflict_event(struct perf_event *a, struct perf_event *b) struct rmid_read { u32 rmid; + u32 evt_type; atomic64_t value; }; static void __intel_cqm_event_count(void *info); +static void init_mbm_sample(u32 rmid, u32 evt_type); + +static bool is_mbm_event(int e) +{ + return (e >= QOS_MBM_TOTAL_EVENT_ID && e <= QOS_MBM_LOCAL_EVENT_ID); +} /* * Exchange the RMID of a group of events. @@ -873,6 +896,68 @@ static void intel_cqm_rmid_rotate(struct work_struct *work) schedule_delayed_work(&intel_cqm_rmid_work, delay); } +static u64 update_sample(unsigned int rmid, u32 evt_type, int first) +{ + struct sample *mbm_current; + u32 vrmid = rmid_2_index(rmid); + u64 val, bytes, shift; + u32 eventid; + + if (evt_type == QOS_MBM_LOCAL_EVENT_ID) { + mbm_current = &mbm_local[vrmid]; + eventid = QOS_MBM_LOCAL_EVENT_ID; + } else { + mbm_current = &mbm_total[vrmid]; + eventid = QOS_MBM_TOTAL_EVENT_ID; + } + + wrmsr(MSR_IA32_QM_EVTSEL, eventid, rmid); + rdmsrl(MSR_IA32_QM_CTR, val); + if (val & (RMID_VAL_ERROR | RMID_VAL_UNAVAIL)) + return mbm_current->total_bytes; + + if (first) { + mbm_current->prev_msr = val; + mbm_current->total_bytes = 0; + return mbm_current->total_bytes; + } + + shift = 64 - MBM_CNTR_WIDTH; + bytes = (val << shift) - (mbm_current->prev_msr << shift); + bytes >>= shift; + + bytes *= cqm_l3_scale; + + mbm_current->total_bytes += bytes; + mbm_current->prev_msr = val; + + return mbm_current->total_bytes; +} + +static u64 rmid_read_mbm(unsigned int rmid, u32 evt_type) +{ + return update_sample(rmid, evt_type, 0); +} + +static void __intel_mbm_event_init(void *info) +{ + struct rmid_read *rr = info; + + update_sample(rr->rmid, rr->evt_type, 1); +} + +static void init_mbm_sample(u32 rmid, u32 evt_type) +{ + struct rmid_read rr = { + .rmid = rmid, + .evt_type = evt_type, + .value = ATOMIC64_INIT(0), + }; + + /* on each socket, init sample */ + on_each_cpu_mask(&cqm_cpumask, __intel_mbm_event_init, &rr, 1); +} + /* * Find a group and setup RMID. * @@ -893,6 +978,8 @@ static void intel_cqm_setup_event(struct perf_event *event, /* All tasks in a group share an RMID */ event->hw.cqm_rmid = rmid; *group = iter; + if (is_mbm_event(event->attr.config)) + init_mbm_sample(rmid, event->attr.config); return; } @@ -909,6 +996,9 @@ static void intel_cqm_setup_event(struct perf_event *event, else rmid = __get_rmid(); + if (is_mbm_event(event->attr.config)) + init_mbm_sample(rmid, event->attr.config); + event->hw.cqm_rmid = rmid; } @@ -930,7 +1020,10 @@ static void intel_cqm_event_read(struct perf_event *event) if (!__rmid_valid(rmid)) goto out; - val = __rmid_read(rmid); + if (is_mbm_event(event->attr.config)) + val = rmid_read_mbm(rmid, event->attr.config); + else + val = __rmid_read(rmid); /* * Ignore this reading on error states and do not update the value. @@ -961,6 +1054,17 @@ static inline bool cqm_group_leader(struct perf_event *event) return !list_empty(&event->hw.cqm_groups_entry); } +static void __intel_mbm_event_count(void *info) +{ + struct rmid_read *rr = info; + u64 val; + + val = rmid_read_mbm(rr->rmid, rr->evt_type); + if (val & (RMID_VAL_ERROR | RMID_VAL_UNAVAIL)) + return; + atomic64_add(val, &rr->value); +} + static u64 intel_cqm_event_count(struct perf_event *event) { unsigned long flags; @@ -1014,7 +1118,12 @@ static u64 intel_cqm_event_count(struct perf_event *event) if (!__rmid_valid(rr.rmid)) goto out; - on_each_cpu_mask(&cqm_cpumask, __intel_cqm_event_count, &rr, 1); + if (is_mbm_event(event->attr.config)) { + rr.evt_type = event->attr.config; + on_each_cpu_mask(&cqm_cpumask, __intel_mbm_event_count, &rr, 1); + } else { + on_each_cpu_mask(&cqm_cpumask, __intel_cqm_event_count, &rr, 1); + } raw_spin_lock_irqsave(&cache_lock, flags); if (event->hw.cqm_rmid == rr.rmid) @@ -1129,7 +1238,8 @@ static int intel_cqm_event_init(struct perf_event *event) if (event->attr.type != intel_cqm_pmu.type) return -ENOENT; - if (event->attr.config & ~QOS_EVENT_MASK) + if ((event->attr.config < QOS_L3_OCCUP_EVENT_ID) || + (event->attr.config > QOS_MBM_LOCAL_EVENT_ID)) return -EINVAL; /* unsupported modes and filters */ From 2d4de8376ff1d94a5070cfa9092c59bfdc4e693e Mon Sep 17 00:00:00 2001 From: Vikas Shivappa Date: Thu, 10 Mar 2016 15:32:11 -0800 Subject: [PATCH 15/44] perf/x86/mbm: Implement RMID recycling RMID could be allocated or deallocated as part of RMID recycling. When an RMID is allocated for MBM event, the MBM counter needs to be initialized because next time we read the counter we need the previous value to account for total bytes that went to the memory controller. Similarly, when RMID is deallocated we need to update the ->count variable. Signed-off-by: Vikas Shivappa Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Tony Luck Acked-by: Thomas Gleixner Cc: Alexander Shishkin Cc: Andy Lutomirski Cc: Arnaldo Carvalho de Melo Cc: Borislav Petkov Cc: Brian Gerst Cc: David Ahern Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Jiri Olsa Cc: Linus Torvalds Cc: Matt Fleming Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Vince Weaver Cc: fenghua.yu@intel.com Cc: h.peter.anvin@intel.com Cc: ravi.v.shankar@intel.com Cc: vikas.shivappa@intel.com Link: http://lkml.kernel.org/r/1457652732-4499-6-git-send-email-vikas.shivappa@linux.intel.com Signed-off-by: Ingo Molnar --- arch/x86/events/intel/cqm.c | 31 +++++++++++++++++++++++++++---- 1 file changed, 27 insertions(+), 4 deletions(-) diff --git a/arch/x86/events/intel/cqm.c b/arch/x86/events/intel/cqm.c index 610bd8ab37e4..a98f472bf6b2 100644 --- a/arch/x86/events/intel/cqm.c +++ b/arch/x86/events/intel/cqm.c @@ -450,6 +450,7 @@ struct rmid_read { static void __intel_cqm_event_count(void *info); static void init_mbm_sample(u32 rmid, u32 evt_type); +static void __intel_mbm_event_count(void *info); static bool is_mbm_event(int e) { @@ -476,8 +477,14 @@ static u32 intel_cqm_xchg_rmid(struct perf_event *group, u32 rmid) .rmid = old_rmid, }; - on_each_cpu_mask(&cqm_cpumask, __intel_cqm_event_count, - &rr, 1); + if (is_mbm_event(group->attr.config)) { + rr.evt_type = group->attr.config; + on_each_cpu_mask(&cqm_cpumask, __intel_mbm_event_count, + &rr, 1); + } else { + on_each_cpu_mask(&cqm_cpumask, __intel_cqm_event_count, + &rr, 1); + } local64_set(&group->count, atomic64_read(&rr.value)); } @@ -489,6 +496,22 @@ static u32 intel_cqm_xchg_rmid(struct perf_event *group, u32 rmid) raw_spin_unlock_irq(&cache_lock); + /* + * If the allocation is for mbm, init the mbm stats. + * Need to check if each event in the group is mbm event + * because there could be multiple type of events in the same group. + */ + if (__rmid_valid(rmid)) { + event = group; + if (is_mbm_event(event->attr.config)) + init_mbm_sample(rmid, event->attr.config); + + list_for_each_entry(event, head, hw.cqm_group_entry) { + if (is_mbm_event(event->attr.config)) + init_mbm_sample(rmid, event->attr.config); + } + } + return old_rmid; } @@ -978,7 +1001,7 @@ static void intel_cqm_setup_event(struct perf_event *event, /* All tasks in a group share an RMID */ event->hw.cqm_rmid = rmid; *group = iter; - if (is_mbm_event(event->attr.config)) + if (is_mbm_event(event->attr.config) && __rmid_valid(rmid)) init_mbm_sample(rmid, event->attr.config); return; } @@ -996,7 +1019,7 @@ static void intel_cqm_setup_event(struct perf_event *event, else rmid = __get_rmid(); - if (is_mbm_event(event->attr.config)) + if (is_mbm_event(event->attr.config) && __rmid_valid(rmid)) init_mbm_sample(rmid, event->attr.config); event->hw.cqm_rmid = rmid; From e7ee3e8cb550ce43752ae1d1b190d6b5c4150a43 Mon Sep 17 00:00:00 2001 From: Vikas Shivappa Date: Fri, 11 Mar 2016 11:26:17 -0800 Subject: [PATCH 16/44] perf/x86/mbm: Add support for MBM counter overflow handling This patch adds a per package timer which periodically updates the memory bandwidth counters for the events that are currently active. Current patch has a periodic timer every 1s since the SDM guarantees that the counter will not overflow in 1s but this time can be definitely improved by calibrating on the system. The overflow is really a function of the max memory b/w that the socket can support, max counter value and scaling factor. Signed-off-by: Vikas Shivappa Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Tony Luck Acked-by: Thomas Gleixner Cc: Alexander Shishkin Cc: Andy Lutomirski Cc: Arnaldo Carvalho de Melo Cc: Borislav Petkov Cc: Brian Gerst Cc: David Ahern Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Jiri Olsa Cc: Linus Torvalds Cc: Matt Fleming Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Vince Weaver Cc: fenghua.yu@intel.com Cc: h.peter.anvin@intel.com Cc: ravi.v.shankar@intel.com Cc: vikas.shivappa@intel.com Link: http://lkml.kernel.org/r/013b756c5006b1c4ca411f3ecf43ed52f19fbf87.1457723885.git.tony.luck@intel.com Signed-off-by: Ingo Molnar --- arch/x86/events/intel/cqm.c | 139 ++++++++++++++++++++++++++++++++++-- 1 file changed, 134 insertions(+), 5 deletions(-) diff --git a/arch/x86/events/intel/cqm.c b/arch/x86/events/intel/cqm.c index a98f472bf6b2..380d62da8108 100644 --- a/arch/x86/events/intel/cqm.c +++ b/arch/x86/events/intel/cqm.c @@ -14,10 +14,15 @@ #define MSR_IA32_QM_EVTSEL 0x0c8d #define MBM_CNTR_WIDTH 24 +/* + * Guaranteed time in ms as per SDM where MBM counters will not overflow. + */ +#define MBM_CTR_OVERFLOW_TIME 1000 static u32 cqm_max_rmid = -1; static unsigned int cqm_l3_scale; /* supposedly cacheline size */ static bool cqm_enabled, mbm_enabled; +unsigned int mbm_socket_max; /** * struct intel_pqr_state - State cache for the PQR MSR @@ -45,6 +50,7 @@ struct intel_pqr_state { * interrupts disabled, which is sufficient for the protection. */ static DEFINE_PER_CPU(struct intel_pqr_state, pqr_state); +static struct hrtimer *mbm_timers; /** * struct sample - mbm event's (local or total) data * @total_bytes #bytes since we began monitoring @@ -945,6 +951,10 @@ static u64 update_sample(unsigned int rmid, u32 evt_type, int first) return mbm_current->total_bytes; } + /* + * The h/w guarantees that counters will not overflow + * so long as we poll them at least once per second. + */ shift = 64 - MBM_CNTR_WIDTH; bytes = (val << shift) - (mbm_current->prev_msr << shift); bytes >>= shift; @@ -1088,6 +1098,84 @@ static void __intel_mbm_event_count(void *info) atomic64_add(val, &rr->value); } +static enum hrtimer_restart mbm_hrtimer_handle(struct hrtimer *hrtimer) +{ + struct perf_event *iter, *iter1; + int ret = HRTIMER_RESTART; + struct list_head *head; + unsigned long flags; + u32 grp_rmid; + + /* + * Need to cache_lock as the timer Event Select MSR reads + * can race with the mbm/cqm count() and mbm_init() reads. + */ + raw_spin_lock_irqsave(&cache_lock, flags); + + if (list_empty(&cache_groups)) { + ret = HRTIMER_NORESTART; + goto out; + } + + list_for_each_entry(iter, &cache_groups, hw.cqm_groups_entry) { + grp_rmid = iter->hw.cqm_rmid; + if (!__rmid_valid(grp_rmid)) + continue; + if (is_mbm_event(iter->attr.config)) + update_sample(grp_rmid, iter->attr.config, 0); + + head = &iter->hw.cqm_group_entry; + if (list_empty(head)) + continue; + list_for_each_entry(iter1, head, hw.cqm_group_entry) { + if (!iter1->hw.is_group_event) + break; + if (is_mbm_event(iter1->attr.config)) + update_sample(iter1->hw.cqm_rmid, + iter1->attr.config, 0); + } + } + + hrtimer_forward_now(hrtimer, ms_to_ktime(MBM_CTR_OVERFLOW_TIME)); +out: + raw_spin_unlock_irqrestore(&cache_lock, flags); + + return ret; +} + +static void __mbm_start_timer(void *info) +{ + hrtimer_start(&mbm_timers[pkg_id], ms_to_ktime(MBM_CTR_OVERFLOW_TIME), + HRTIMER_MODE_REL_PINNED); +} + +static void __mbm_stop_timer(void *info) +{ + hrtimer_cancel(&mbm_timers[pkg_id]); +} + +static void mbm_start_timers(void) +{ + on_each_cpu_mask(&cqm_cpumask, __mbm_start_timer, NULL, 1); +} + +static void mbm_stop_timers(void) +{ + on_each_cpu_mask(&cqm_cpumask, __mbm_stop_timer, NULL, 1); +} + +static void mbm_hrtimer_init(void) +{ + struct hrtimer *hr; + int i; + + for (i = 0; i < mbm_socket_max; i++) { + hr = &mbm_timers[i]; + hrtimer_init(hr, CLOCK_MONOTONIC, HRTIMER_MODE_REL); + hr->function = mbm_hrtimer_handle; + } +} + static u64 intel_cqm_event_count(struct perf_event *event) { unsigned long flags; @@ -1217,8 +1305,14 @@ static int intel_cqm_event_add(struct perf_event *event, int mode) static void intel_cqm_event_destroy(struct perf_event *event) { struct perf_event *group_other = NULL; + unsigned long flags; mutex_lock(&cache_mutex); + /* + * Hold the cache_lock as mbm timer handlers could be + * scanning the list of events. + */ + raw_spin_lock_irqsave(&cache_lock, flags); /* * If there's another event in this group... @@ -1250,6 +1344,14 @@ static void intel_cqm_event_destroy(struct perf_event *event) } } + raw_spin_unlock_irqrestore(&cache_lock, flags); + + /* + * Stop the mbm overflow timers when the last event is destroyed. + */ + if (mbm_enabled && list_empty(&cache_groups)) + mbm_stop_timers(); + mutex_unlock(&cache_mutex); } @@ -1257,6 +1359,7 @@ static int intel_cqm_event_init(struct perf_event *event) { struct perf_event *group = NULL; bool rotate = false; + unsigned long flags; if (event->attr.type != intel_cqm_pmu.type) return -ENOENT; @@ -1282,9 +1385,21 @@ static int intel_cqm_event_init(struct perf_event *event) mutex_lock(&cache_mutex); + /* + * Start the mbm overflow timers when the first event is created. + */ + if (mbm_enabled && list_empty(&cache_groups)) + mbm_start_timers(); + /* Will also set rmid */ intel_cqm_setup_event(event, &group); + /* + * Hold the cache_lock as mbm timer handlers be + * scanning the list of events. + */ + raw_spin_lock_irqsave(&cache_lock, flags); + if (group) { list_add_tail(&event->hw.cqm_group_entry, &group->hw.cqm_group_entry); @@ -1303,6 +1418,7 @@ static int intel_cqm_event_init(struct perf_event *event) rotate = true; } + raw_spin_unlock_irqrestore(&cache_lock, flags); mutex_unlock(&cache_mutex); if (rotate) @@ -1536,20 +1652,33 @@ static const struct x86_cpu_id intel_mbm_total_match[] = { static int intel_mbm_init(void) { - int array_size, maxid = cqm_max_rmid + 1; + int ret = 0, array_size, maxid = cqm_max_rmid + 1; - array_size = sizeof(struct sample) * maxid * topology_max_packages(); + mbm_socket_max = topology_max_packages(); + array_size = sizeof(struct sample) * maxid * mbm_socket_max; mbm_local = kmalloc(array_size, GFP_KERNEL); if (!mbm_local) return -ENOMEM; mbm_total = kmalloc(array_size, GFP_KERNEL); if (!mbm_total) { - mbm_cleanup(); - return -ENOMEM; + ret = -ENOMEM; + goto out; } - return 0; + array_size = sizeof(struct hrtimer) * mbm_socket_max; + mbm_timers = kmalloc(array_size, GFP_KERNEL); + if (!mbm_timers) { + ret = -ENOMEM; + goto out; + } + mbm_hrtimer_init(); + +out: + if (ret) + mbm_cleanup(); + + return ret; } static int __init intel_cqm_init(void) From 27348f382b6786fd201779246ee70fa115a5b890 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Fri, 11 Mar 2016 23:39:39 +0100 Subject: [PATCH 17/44] perf/x86/cqm: Factor out some common code Having the same code twice (and once quite ugly) is fragile. Signed-off-by: Peter Zijlstra (Intel) Cc: Alexander Shishkin Cc: Andy Lutomirski Cc: Arnaldo Carvalho de Melo Cc: Borislav Petkov Cc: Brian Gerst Cc: David Ahern Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Jiri Olsa Cc: Linus Torvalds Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Thomas Gleixner Cc: Vince Weaver Signed-off-by: Ingo Molnar --- arch/x86/events/intel/cqm.c | 28 +++++++++++++--------------- 1 file changed, 13 insertions(+), 15 deletions(-) diff --git a/arch/x86/events/intel/cqm.c b/arch/x86/events/intel/cqm.c index 380d62da8108..7b5fd811ef45 100644 --- a/arch/x86/events/intel/cqm.c +++ b/arch/x86/events/intel/cqm.c @@ -463,6 +463,14 @@ static bool is_mbm_event(int e) return (e >= QOS_MBM_TOTAL_EVENT_ID && e <= QOS_MBM_LOCAL_EVENT_ID); } +static void cqm_mask_call(struct rmid_read *rr) +{ + if (is_mbm_event(rr->evt_type)) + on_each_cpu_mask(&cqm_cpumask, __intel_mbm_event_count, rr, 1); + else + on_each_cpu_mask(&cqm_cpumask, __intel_cqm_event_count, rr, 1); +} + /* * Exchange the RMID of a group of events. */ @@ -479,18 +487,12 @@ static u32 intel_cqm_xchg_rmid(struct perf_event *group, u32 rmid) */ if (__rmid_valid(old_rmid) && !__rmid_valid(rmid)) { struct rmid_read rr = { - .value = ATOMIC64_INIT(0), .rmid = old_rmid, + .evt_type = group->attr.config, + .value = ATOMIC64_INIT(0), }; - if (is_mbm_event(group->attr.config)) { - rr.evt_type = group->attr.config; - on_each_cpu_mask(&cqm_cpumask, __intel_mbm_event_count, - &rr, 1); - } else { - on_each_cpu_mask(&cqm_cpumask, __intel_cqm_event_count, - &rr, 1); - } + cqm_mask_call(&rr); local64_set(&group->count, atomic64_read(&rr.value)); } @@ -1180,6 +1182,7 @@ static u64 intel_cqm_event_count(struct perf_event *event) { unsigned long flags; struct rmid_read rr = { + .evt_type = event->attr.config, .value = ATOMIC64_INIT(0), }; @@ -1229,12 +1232,7 @@ static u64 intel_cqm_event_count(struct perf_event *event) if (!__rmid_valid(rr.rmid)) goto out; - if (is_mbm_event(event->attr.config)) { - rr.evt_type = event->attr.config; - on_each_cpu_mask(&cqm_cpumask, __intel_mbm_event_count, &rr, 1); - } else { - on_each_cpu_mask(&cqm_cpumask, __intel_cqm_event_count, &rr, 1); - } + cqm_mask_call(&rr); raw_spin_lock_irqsave(&cache_lock, flags); if (event->hw.cqm_rmid == rr.rmid) From 8dfeae0d73bf803be1a533e147b3b0ea69375596 Mon Sep 17 00:00:00 2001 From: Huang Rui Date: Thu, 14 Jan 2016 10:50:04 +0800 Subject: [PATCH 18/44] perf/x86/amd: Move nodes_per_socket into bsp_init_amd() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit nodes_per_socket is static and it needn't be initialized many times during every CPU core init. So move its initialization into bsp_init_amd(). Signed-off-by: Huang Rui Signed-off-by: Borislav Petkov Cc: Aaron Lu Cc: Alexander Shishkin Cc: Andreas Herrmann Cc: Andy Lutomirski Cc: Andy Lutomirski Cc: Aravind Gopalakrishnan Cc: Arnaldo Carvalho de Melo Cc: Borislav Petkov Cc: Brian Gerst Cc: David Ahern Cc: Denys Vlasenko Cc: Fengguang Wu Cc: Frédéric Weisbecker Cc: Guenter Roeck Cc: H. Peter Anvin Cc: Hector Marco-Gisbert Cc: Jacob Shin Cc: Jiri Olsa Cc: John Stultz Cc: Linus Torvalds Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Robert Richter Cc: Stephane Eranian Cc: Suravee Suthikulpanit Cc: Thomas Gleixner Cc: Vince Weaver Cc: spg_linux_kernel@amd.com Link: http://lkml.kernel.org/r/1452739808-11871-2-git-send-email-ray.huang@amd.com Signed-off-by: Ingo Molnar --- arch/x86/kernel/cpu/amd.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c index b39338c4b260..d4b06e8cd77c 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -306,7 +306,6 @@ static void amd_get_topology(struct cpuinfo_x86 *c) u32 eax, ebx, ecx, edx; cpuid(0x8000001e, &eax, &ebx, &ecx, &edx); - nodes_per_socket = ((ecx >> 8) & 7) + 1; node_id = ecx & 7; /* get compute unit information */ @@ -317,7 +316,6 @@ static void amd_get_topology(struct cpuinfo_x86 *c) u64 value; rdmsrl(MSR_FAM10H_NODE_ID, value); - nodes_per_socket = ((value >> 3) & 7) + 1; node_id = value & 7; } else return; @@ -519,6 +517,18 @@ static void bsp_init_amd(struct cpuinfo_x86 *c) if (cpu_has(c, X86_FEATURE_MWAITX)) use_mwaitx_delay(); + + if (boot_cpu_has(X86_FEATURE_TOPOEXT)) { + u32 ecx; + + ecx = cpuid_ecx(0x8000001e); + nodes_per_socket = ((ecx >> 8) & 7) + 1; + } else if (boot_cpu_has(X86_FEATURE_NODEID_MSR)) { + u64 value; + + rdmsrl(MSR_FAM10H_NODE_ID, value); + nodes_per_socket = ((value >> 3) & 7) + 1; + } } static void early_init_amd(struct cpuinfo_x86 *c) From f8519155b4d5224e215203bf0e94a8478a8f8945 Mon Sep 17 00:00:00 2001 From: Suravee Suthikulpanit Date: Sun, 28 Feb 2016 22:23:29 -0600 Subject: [PATCH 19/44] perf/x86/amd: Add support for new IOMMU performance events This patch adds new IOMMU performance event based on the information in table 74 of the AMD I/O Virtualization Technology (IOMMU) Specification (Document Id: 4882, Rev 2.62, Feb 2015) Signed-off-by: Suravee Suthikulpanit Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Joerg Roedel Acked-by: Joerg Roedel Cc: Cc: Alexander Shishkin Cc: Andy Lutomirski Cc: Arnaldo Carvalho de Melo Cc: Borislav Petkov Cc: Brian Gerst Cc: David Ahern Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Jiri Olsa Cc: Linus Torvalds Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Thomas Gleixner Cc: Vince Weaver Link: http://support.amd.com/TechDocs/48882_IOMMU.pdf Signed-off-by: Ingo Molnar --- arch/x86/events/amd/iommu.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/x86/events/amd/iommu.c b/arch/x86/events/amd/iommu.c index 635e5eba0caf..40625ca7a190 100644 --- a/arch/x86/events/amd/iommu.c +++ b/arch/x86/events/amd/iommu.c @@ -118,6 +118,11 @@ static struct amd_iommu_event_desc amd_iommu_v2_event_descs[] = { AMD_IOMMU_EVENT_DESC(cmd_processed, "csource=0x11"), AMD_IOMMU_EVENT_DESC(cmd_processed_inv, "csource=0x12"), AMD_IOMMU_EVENT_DESC(tlb_inv, "csource=0x13"), + AMD_IOMMU_EVENT_DESC(ign_rd_wr_mmio_1ff8h, "csource=0x14"), + AMD_IOMMU_EVENT_DESC(vapic_int_non_guest, "csource=0x15"), + AMD_IOMMU_EVENT_DESC(vapic_int_guest, "csource=0x16"), + AMD_IOMMU_EVENT_DESC(smi_recv, "csource=0x17"), + AMD_IOMMU_EVENT_DESC(smi_blk, "csource=0x18"), { /* end: all zeroes */ }, }; From 1dcaac1ce07db672e2cb5b4ef9642990689bb2a1 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Tue, 8 Mar 2016 17:56:05 +0100 Subject: [PATCH 20/44] perf/core: Document some hotplug bits Document some of the hotplug notifier usage. Requested-by: Thomas Gleixner Signed-off-by: Peter Zijlstra (Intel) Cc: Alexander Shishkin Cc: Andy Lutomirski Cc: Arnaldo Carvalho de Melo Cc: Borislav Petkov Cc: Brian Gerst Cc: David Ahern Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Jiri Olsa Cc: Linus Torvalds Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Thomas Gleixner Cc: Vince Weaver Signed-off-by: Ingo Molnar --- kernel/events/core.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/kernel/events/core.c b/kernel/events/core.c index 43e35faf576e..de24fbce5277 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -9449,10 +9449,29 @@ perf_cpu_notify(struct notifier_block *self, unsigned long action, void *hcpu) switch (action & ~CPU_TASKS_FROZEN) { case CPU_UP_PREPARE: + /* + * This must be done before the CPU comes alive, because the + * moment we can run tasks we can encounter (software) events. + * + * Specifically, someone can have inherited events on kthreadd + * or a pre-existing worker thread that gets re-bound. + */ perf_event_init_cpu(cpu); break; case CPU_DOWN_PREPARE: + /* + * This must be done before the CPU dies because after that an + * active event might want to IPI the CPU and that'll not work + * so great for dead CPUs. + * + * XXX smp_call_function_single() return -ENXIO without a warn + * so we could possibly deal with this. + * + * This is safe against new events arriving because + * sys_perf_event_open() serializes against hotplug using + * get_online_cpus(). + */ perf_event_exit_cpu(cpu); break; default: From 01fe03ff1c7ce6b6e2212cb6171a49c2858fbc7c Mon Sep 17 00:00:00 2001 From: Huang Rui Date: Thu, 14 Jan 2016 10:50:06 +0800 Subject: [PATCH 21/44] x86/cpufeature, perf/x86: Add AMD Accumulated Power Mechanism feature flag MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit AMD CPU family 15h model 0x60 introduces a mechanism for measuring accumulated power. It is used to report the processor power consumption and support for it is indicated by CPUID Fn8000_0007_EDX[12]. Signed-off-by: Huang Rui Signed-off-by: Borislav Petkov Cc: Aaron Lu Cc: Alexander Shishkin Cc: Andreas Herrmann Cc: Andy Lutomirski Cc: Andy Lutomirski Cc: Aravind Gopalakrishnan Cc: Arnaldo Carvalho de Melo Cc: Borislav Petkov Cc: Brian Gerst Cc: David Ahern Cc: Denys Vlasenko Cc: Fengguang Wu Cc: Frédéric Weisbecker Cc: Guenter Roeck Cc: H. Peter Anvin Cc: Hector Marco-Gisbert Cc: Jacob Shin Cc: Jiri Olsa Cc: John Stultz Cc: Kristen Carlson Accardi Cc: Linus Torvalds Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Robert Richter Cc: Ross Zwisler Cc: Stephane Eranian Cc: Suravee Suthikulpanit Cc: Thomas Gleixner Cc: Vince Weaver Cc: Wan Zongshun Cc: spg_linux_kernel@amd.com Link: http://lkml.kernel.org/r/1452739808-11871-4-git-send-email-ray.huang@amd.com [ Resolved conflict and moved the synthetic CPUID slot to 19. ] Signed-off-by: Ingo Molnar --- arch/x86/include/asm/cpufeatures.h | 2 +- arch/x86/kernel/cpu/amd.c | 4 ++++ 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h index 746dd6ae4932..44ebd04878eb 100644 --- a/arch/x86/include/asm/cpufeatures.h +++ b/arch/x86/include/asm/cpufeatures.h @@ -94,7 +94,7 @@ #define X86_FEATURE_REP_GOOD ( 3*32+16) /* rep microcode works well */ #define X86_FEATURE_MFENCE_RDTSC ( 3*32+17) /* "" Mfence synchronizes RDTSC */ #define X86_FEATURE_LFENCE_RDTSC ( 3*32+18) /* "" Lfence synchronizes RDTSC */ -/* free, was #define X86_FEATURE_11AP ( 3*32+19) * "" Bad local APIC aka 11AP */ +#define X86_FEATURE_ACC_POWER ( 3*32+19) /* AMD Accumulated Power Mechanism */ #define X86_FEATURE_NOPL ( 3*32+20) /* The NOPL (0F 1F) instructions */ #define X86_FEATURE_ALWAYS ( 3*32+21) /* "" Always-present feature */ #define X86_FEATURE_XTOPOLOGY ( 3*32+22) /* cpu topology enum extensions */ diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c index d4b06e8cd77c..68fe8d3bed56 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -546,6 +546,10 @@ static void early_init_amd(struct cpuinfo_x86 *c) set_sched_clock_stable(); } + /* Bit 12 of 8000_0007 edx is accumulated power mechanism. */ + if (c->x86_power & BIT(12)) + set_cpu_cap(c, X86_FEATURE_ACC_POWER); + #ifdef CONFIG_X86_64 set_cpu_cap(c, X86_FEATURE_SYSCALL32); #else From c7ab62bfbe0e27ef452d19d88b083f01e99f13a7 Mon Sep 17 00:00:00 2001 From: Huang Rui Date: Wed, 9 Mar 2016 13:45:06 +0800 Subject: [PATCH 22/44] perf/x86/amd/power: Add AMD accumulated power reporting mechanism Introduce an AMD accumlated power reporting mechanism for the Family 15h, Model 60h processor that can be used to calculate the average power consumed by a processor during a measurement interval. The feature support is indicated by CPUID Fn8000_0007_EDX[12]. This feature will be implemented both in hwmon and perf. The current design provides one event to report per package/processor power consumption by counting each compute unit power value. Here the gory details of how the computation is done: * Tsample: compute unit power accumulator sample period * Tref: the PTSC counter period (PTSC: performance timestamp counter) * N: the ratio of compute unit power accumulator sample period to the PTSC period * Jmax: max compute unit accumulated power which is indicated by MSR_C001007b[MaxCpuSwPwrAcc] * Jx/Jy: compute unit accumulated power which is indicated by MSR_C001007a[CpuSwPwrAcc] * Tx/Ty: the value of performance timestamp counter which is indicated by CU_PTSC MSR_C0010280[PTSC] * PwrCPUave: CPU average power i. Determine the ratio of Tsample to Tref by executing CPUID Fn8000_0007. N = value of CPUID Fn8000_0007_ECX[CpuPwrSampleTimeRatio[15:0]]. ii. Read the full range of the cumulative energy value from the new MSR MaxCpuSwPwrAcc. Jmax = value returned. iii. At time x, software reads CpuSwPwrAcc and samples the PTSC. Jx = value read from CpuSwPwrAcc and Tx = value read from PTSC. iv. At time y, software reads CpuSwPwrAcc and samples the PTSC. Jy = value read from CpuSwPwrAcc and Ty = value read from PTSC. v. Calculate the average power consumption for a compute unit over time period (y-x). Unit of result is uWatt: if (Jy < Jx) // Rollover has occurred Jdelta = (Jy + Jmax) - Jx else Jdelta = Jy - Jx PwrCPUave = N * Jdelta * 1000 / (Ty - Tx) Simple example: root@hr-zp:/home/ray/tip# ./tools/perf/perf stat -a -e 'power/power-pkg/' make -j4 CHK include/config/kernel.release CHK include/generated/uapi/linux/version.h CHK include/generated/utsrelease.h CHK include/generated/timeconst.h CHK include/generated/bounds.h CHK include/generated/asm-offsets.h CALL scripts/checksyscalls.sh CHK include/generated/compile.h SKIPPED include/generated/compile.h Building modules, stage 2. Kernel: arch/x86/boot/bzImage is ready (#40) MODPOST 4225 modules Performance counter stats for 'system wide': 183.44 mWatts power/power-pkg/ 341.837270111 seconds time elapsed root@hr-zp:/home/ray/tip# ./tools/perf/perf stat -a -e 'power/power-pkg/' sleep 10 Performance counter stats for 'system wide': 0.18 mWatts power/power-pkg/ 10.012551815 seconds time elapsed Suggested-by: Peter Zijlstra Suggested-by: Ingo Molnar Suggested-by: Borislav Petkov Signed-off-by: Huang Rui Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Thomas Gleixner Cc: Alexander Shishkin Cc: Andy Lutomirski Cc: Arnaldo Carvalho de Melo Cc: Arnaldo Carvalho de Melo Cc: Borislav Petkov Cc: Brian Gerst Cc: David Ahern Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Jiri Olsa Cc: Kan Liang Cc: Linus Torvalds Cc: Namhyung Kim Cc: Robert Richter Cc: Stephane Eranian Cc: Vince Weaver Cc: jacob.w.shin@gmail.com Link: http://lkml.kernel.org/r/1457502306-2559-1-git-send-email-ray.huang@amd.com [ Fixed the modular build. ] Signed-off-by: Ingo Molnar --- arch/x86/Kconfig | 9 + arch/x86/events/Makefile | 1 + arch/x86/events/amd/power.c | 353 ++++++++++++++++++++++++++++++++++++ arch/x86/events/core.c | 4 +- include/linux/perf_event.h | 4 + 5 files changed, 369 insertions(+), 2 deletions(-) create mode 100644 arch/x86/events/amd/power.c diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 8f2e6659281b..a313c0e7e165 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -1206,6 +1206,15 @@ config MICROCODE_OLD_INTERFACE def_bool y depends on MICROCODE +config PERF_EVENTS_AMD_POWER + depends on PERF_EVENTS && CPU_SUP_AMD + tristate "AMD Processor Power Reporting Mechanism" + ---help--- + Provide power reporting mechanism support for AMD processors. + Currently, it leverages X86_FEATURE_ACC_POWER + (CPUID Fn8000_0007_EDX[12]) interface to calculate the + average power consumption on Family 15h processors. + config X86_MSR tristate "/dev/cpu/*/msr - Model-specific register support" ---help--- diff --git a/arch/x86/events/Makefile b/arch/x86/events/Makefile index fdfea1511cc0..f59618a39990 100644 --- a/arch/x86/events/Makefile +++ b/arch/x86/events/Makefile @@ -1,6 +1,7 @@ obj-y += core.o obj-$(CONFIG_CPU_SUP_AMD) += amd/core.o amd/uncore.o +obj-$(CONFIG_PERF_EVENTS_AMD_POWER) += amd/power.o obj-$(CONFIG_X86_LOCAL_APIC) += amd/ibs.o msr.o ifdef CONFIG_AMD_IOMMU obj-$(CONFIG_CPU_SUP_AMD) += amd/iommu.o diff --git a/arch/x86/events/amd/power.c b/arch/x86/events/amd/power.c new file mode 100644 index 000000000000..55a3529dbf12 --- /dev/null +++ b/arch/x86/events/amd/power.c @@ -0,0 +1,353 @@ +/* + * Performance events - AMD Processor Power Reporting Mechanism + * + * Copyright (C) 2016 Advanced Micro Devices, Inc. + * + * Author: Huang Rui + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include +#include +#include +#include +#include "../perf_event.h" + +#define MSR_F15H_CU_PWR_ACCUMULATOR 0xc001007a +#define MSR_F15H_CU_MAX_PWR_ACCUMULATOR 0xc001007b +#define MSR_F15H_PTSC 0xc0010280 + +/* Event code: LSB 8 bits, passed in attr->config any other bit is reserved. */ +#define AMD_POWER_EVENT_MASK 0xFFULL + +/* + * Accumulated power status counters. + */ +#define AMD_POWER_EVENTSEL_PKG 1 + +/* + * The ratio of compute unit power accumulator sample period to the + * PTSC period. + */ +static unsigned int cpu_pwr_sample_ratio; + +/* Maximum accumulated power of a compute unit. */ +static u64 max_cu_acc_power; + +static struct pmu pmu_class; + +/* + * Accumulated power represents the sum of each compute unit's (CU) power + * consumption. On any core of each CU we read the total accumulated power from + * MSR_F15H_CU_PWR_ACCUMULATOR. cpu_mask represents CPU bit map of all cores + * which are picked to measure the power for the CUs they belong to. + */ +static cpumask_t cpu_mask; + +static void event_update(struct perf_event *event) +{ + struct hw_perf_event *hwc = &event->hw; + u64 prev_pwr_acc, new_pwr_acc, prev_ptsc, new_ptsc; + u64 delta, tdelta; + + prev_pwr_acc = hwc->pwr_acc; + prev_ptsc = hwc->ptsc; + rdmsrl(MSR_F15H_CU_PWR_ACCUMULATOR, new_pwr_acc); + rdmsrl(MSR_F15H_PTSC, new_ptsc); + + /* + * Calculate the CU power consumption over a time period, the unit of + * final value (delta) is micro-Watts. Then add it to the event count. + */ + if (new_pwr_acc < prev_pwr_acc) { + delta = max_cu_acc_power + new_pwr_acc; + delta -= prev_pwr_acc; + } else + delta = new_pwr_acc - prev_pwr_acc; + + delta *= cpu_pwr_sample_ratio * 1000; + tdelta = new_ptsc - prev_ptsc; + + do_div(delta, tdelta); + local64_add(delta, &event->count); +} + +static void __pmu_event_start(struct perf_event *event) +{ + if (WARN_ON_ONCE(!(event->hw.state & PERF_HES_STOPPED))) + return; + + event->hw.state = 0; + + rdmsrl(MSR_F15H_PTSC, event->hw.ptsc); + rdmsrl(MSR_F15H_CU_PWR_ACCUMULATOR, event->hw.pwr_acc); +} + +static void pmu_event_start(struct perf_event *event, int mode) +{ + __pmu_event_start(event); +} + +static void pmu_event_stop(struct perf_event *event, int mode) +{ + struct hw_perf_event *hwc = &event->hw; + + /* Mark event as deactivated and stopped. */ + if (!(hwc->state & PERF_HES_STOPPED)) + hwc->state |= PERF_HES_STOPPED; + + /* Check if software counter update is necessary. */ + if ((mode & PERF_EF_UPDATE) && !(hwc->state & PERF_HES_UPTODATE)) { + /* + * Drain the remaining delta count out of an event + * that we are disabling: + */ + event_update(event); + hwc->state |= PERF_HES_UPTODATE; + } +} + +static int pmu_event_add(struct perf_event *event, int mode) +{ + struct hw_perf_event *hwc = &event->hw; + + hwc->state = PERF_HES_UPTODATE | PERF_HES_STOPPED; + + if (mode & PERF_EF_START) + __pmu_event_start(event); + + return 0; +} + +static void pmu_event_del(struct perf_event *event, int flags) +{ + pmu_event_stop(event, PERF_EF_UPDATE); +} + +static int pmu_event_init(struct perf_event *event) +{ + u64 cfg = event->attr.config & AMD_POWER_EVENT_MASK; + + /* Only look at AMD power events. */ + if (event->attr.type != pmu_class.type) + return -ENOENT; + + /* Unsupported modes and filters. */ + if (event->attr.exclude_user || + event->attr.exclude_kernel || + event->attr.exclude_hv || + event->attr.exclude_idle || + event->attr.exclude_host || + event->attr.exclude_guest || + /* no sampling */ + event->attr.sample_period) + return -EINVAL; + + if (cfg != AMD_POWER_EVENTSEL_PKG) + return -EINVAL; + + return 0; +} + +static void pmu_event_read(struct perf_event *event) +{ + event_update(event); +} + +static ssize_t +get_attr_cpumask(struct device *dev, struct device_attribute *attr, char *buf) +{ + return cpumap_print_to_pagebuf(true, buf, &cpu_mask); +} + +static DEVICE_ATTR(cpumask, S_IRUGO, get_attr_cpumask, NULL); + +static struct attribute *pmu_attrs[] = { + &dev_attr_cpumask.attr, + NULL, +}; + +static struct attribute_group pmu_attr_group = { + .attrs = pmu_attrs, +}; + +/* + * Currently it only supports to report the power of each + * processor/package. + */ +EVENT_ATTR_STR(power-pkg, power_pkg, "event=0x01"); + +EVENT_ATTR_STR(power-pkg.unit, power_pkg_unit, "mWatts"); + +/* Convert the count from micro-Watts to milli-Watts. */ +EVENT_ATTR_STR(power-pkg.scale, power_pkg_scale, "1.000000e-3"); + +static struct attribute *events_attr[] = { + EVENT_PTR(power_pkg), + EVENT_PTR(power_pkg_unit), + EVENT_PTR(power_pkg_scale), + NULL, +}; + +static struct attribute_group pmu_events_group = { + .name = "events", + .attrs = events_attr, +}; + +PMU_FORMAT_ATTR(event, "config:0-7"); + +static struct attribute *formats_attr[] = { + &format_attr_event.attr, + NULL, +}; + +static struct attribute_group pmu_format_group = { + .name = "format", + .attrs = formats_attr, +}; + +static const struct attribute_group *attr_groups[] = { + &pmu_attr_group, + &pmu_format_group, + &pmu_events_group, + NULL, +}; + +static struct pmu pmu_class = { + .attr_groups = attr_groups, + /* system-wide only */ + .task_ctx_nr = perf_invalid_context, + .event_init = pmu_event_init, + .add = pmu_event_add, + .del = pmu_event_del, + .start = pmu_event_start, + .stop = pmu_event_stop, + .read = pmu_event_read, +}; + +static void power_cpu_exit(int cpu) +{ + int target; + + if (!cpumask_test_and_clear_cpu(cpu, &cpu_mask)) + return; + + /* + * Find a new CPU on the same compute unit, if was set in cpumask + * and still some CPUs on compute unit. Then migrate event and + * context to new CPU. + */ + target = cpumask_any_but(topology_sibling_cpumask(cpu), cpu); + if (target < nr_cpumask_bits) { + cpumask_set_cpu(target, &cpu_mask); + perf_pmu_migrate_context(&pmu_class, cpu, target); + } +} + +static void power_cpu_init(int cpu) +{ + int target; + + /* + * 1) If any CPU is set at cpu_mask in the same compute unit, do + * nothing. + * 2) If no CPU is set at cpu_mask in the same compute unit, + * set current STARTING CPU. + * + * Note: if there is a CPU aside of the new one already in the + * sibling mask, then it is also in cpu_mask. + */ + target = cpumask_any_but(topology_sibling_cpumask(cpu), cpu); + if (target >= nr_cpumask_bits) + cpumask_set_cpu(cpu, &cpu_mask); +} + +static int +power_cpu_notifier(struct notifier_block *self, unsigned long action, void *hcpu) +{ + unsigned int cpu = (long)hcpu; + + switch (action & ~CPU_TASKS_FROZEN) { + case CPU_DOWN_FAILED: + case CPU_STARTING: + power_cpu_init(cpu); + break; + case CPU_DOWN_PREPARE: + power_cpu_exit(cpu); + break; + default: + break; + } + + return NOTIFY_OK; +} + +static struct notifier_block power_cpu_notifier_nb = { + .notifier_call = power_cpu_notifier, + .priority = CPU_PRI_PERF, +}; + +static const struct x86_cpu_id cpu_match[] = { + { .vendor = X86_VENDOR_AMD, .family = 0x15 }, + {}, +}; + +static int __init amd_power_pmu_init(void) +{ + int cpu, target, ret; + + if (!x86_match_cpu(cpu_match)) + return 0; + + if (!boot_cpu_has(X86_FEATURE_ACC_POWER)) + return -ENODEV; + + cpu_pwr_sample_ratio = cpuid_ecx(0x80000007); + + if (rdmsrl_safe(MSR_F15H_CU_MAX_PWR_ACCUMULATOR, &max_cu_acc_power)) { + pr_err("Failed to read max compute unit power accumulator MSR\n"); + return -ENODEV; + } + + cpu_notifier_register_begin(); + + /* Choose one online core of each compute unit. */ + for_each_online_cpu(cpu) { + target = cpumask_first(topology_sibling_cpumask(cpu)); + if (!cpumask_test_cpu(target, &cpu_mask)) + cpumask_set_cpu(target, &cpu_mask); + } + + ret = perf_pmu_register(&pmu_class, "power", -1); + if (WARN_ON(ret)) { + pr_warn("AMD Power PMU registration failed\n"); + goto out; + } + + __register_cpu_notifier(&power_cpu_notifier_nb); + + pr_info("AMD Power PMU detected\n"); + +out: + cpu_notifier_register_done(); + + return ret; +} +module_init(amd_power_pmu_init); + +static void __exit amd_power_pmu_exit(void) +{ + cpu_notifier_register_begin(); + __unregister_cpu_notifier(&power_cpu_notifier_nb); + cpu_notifier_register_done(); + + perf_pmu_unregister(&pmu_class); +} +module_exit(amd_power_pmu_exit); + +MODULE_AUTHOR("Huang Rui "); +MODULE_DESCRIPTION("AMD Processor Power Reporting Mechanism"); +MODULE_LICENSE("GPL v2"); diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c index 5e830d0c95c9..002b2eadd600 100644 --- a/arch/x86/events/core.c +++ b/arch/x86/events/core.c @@ -1602,8 +1602,7 @@ __init struct attribute **merge_attr(struct attribute **a, struct attribute **b) return new; } -ssize_t events_sysfs_show(struct device *dev, struct device_attribute *attr, - char *page) +ssize_t events_sysfs_show(struct device *dev, struct device_attribute *attr, char *page) { struct perf_pmu_events_attr *pmu_attr = \ container_of(attr, struct perf_pmu_events_attr, attr); @@ -1615,6 +1614,7 @@ ssize_t events_sysfs_show(struct device *dev, struct device_attribute *attr, return x86_pmu.events_sysfs_show(page, config); } +EXPORT_SYMBOL_GPL(events_sysfs_show); EVENT_ATTR(cpu-cycles, CPU_CYCLES ); EVENT_ATTR(instructions, INSTRUCTIONS ); diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 7bb315bec3aa..15588d4c581d 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -129,6 +129,10 @@ struct hw_perf_event { struct { /* itrace */ int itrace_started; }; + struct { /* amd_power */ + u64 pwr_acc; + u64 ptsc; + }; #ifdef CONFIG_HAVE_HW_BREAKPOINT struct { /* breakpoint */ /* From cb2252522aaff572f28dc6613307e1e0e62496cd Mon Sep 17 00:00:00 2001 From: Kan Liang Date: Sun, 20 Mar 2016 11:58:21 -0700 Subject: [PATCH 23/44] perf/x86/intel/uncore: Remove ev_sel_ext bit support for PCU The ev_sel_ext in PCU_MSR_PMON_CTL is locked on some CPU models, so despite it being documented in the SDM, if we write 1 to that bit then we can get a #GP fault. Which #GP the perf fuzzer happily triggered in Peter Zijlstra's testing. Also, there are no public events which use that bit, so remove ev_sel_ext bit support for PCU. Reported-by: Peter Zijlstra Signed-off-by: Kan Liang Acked-by: Peter Zijlstra Cc: Alexander Shishkin Cc: Arnaldo Carvalho de Melo Cc: David Ahern Cc: Jiri Olsa Cc: Linus Torvalds Cc: Namhyung Kim Cc: Stephane Eranian Cc: Thomas Gleixner Cc: Vince Weaver Link: http://lkml.kernel.org/r/1458500301-3594-1-git-send-email-kan.liang@intel.com Signed-off-by: Ingo Molnar --- arch/x86/events/intel/uncore_snbep.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/arch/x86/events/intel/uncore_snbep.c b/arch/x86/events/intel/uncore_snbep.c index 93f6bd9bf761..ab2bcaaebe38 100644 --- a/arch/x86/events/intel/uncore_snbep.c +++ b/arch/x86/events/intel/uncore_snbep.c @@ -46,7 +46,6 @@ (SNBEP_PMON_CTL_EV_SEL_MASK | \ SNBEP_PCU_MSR_PMON_CTL_OCC_SEL_MASK | \ SNBEP_PMON_CTL_EDGE_DET | \ - SNBEP_PMON_CTL_EV_SEL_EXT | \ SNBEP_PMON_CTL_INVERT | \ SNBEP_PCU_MSR_PMON_CTL_TRESH_MASK | \ SNBEP_PCU_MSR_PMON_CTL_OCC_INVERT | \ @@ -148,7 +147,6 @@ /* IVBEP PCU */ #define IVBEP_PCU_MSR_PMON_RAW_EVENT_MASK \ (SNBEP_PMON_CTL_EV_SEL_MASK | \ - SNBEP_PMON_CTL_EV_SEL_EXT | \ SNBEP_PCU_MSR_PMON_CTL_OCC_SEL_MASK | \ SNBEP_PMON_CTL_EDGE_DET | \ SNBEP_PCU_MSR_PMON_CTL_TRESH_MASK | \ @@ -258,7 +256,6 @@ SNBEP_PCU_MSR_PMON_CTL_OCC_SEL_MASK | \ SNBEP_PMON_CTL_EDGE_DET | \ SNBEP_CBO_PMON_CTL_TID_EN | \ - SNBEP_PMON_CTL_EV_SEL_EXT | \ SNBEP_PMON_CTL_INVERT | \ KNL_PCU_MSR_PMON_CTL_TRESH_MASK | \ SNBEP_PCU_MSR_PMON_CTL_OCC_INVERT | \ @@ -472,7 +469,7 @@ static struct attribute *snbep_uncore_cbox_formats_attr[] = { }; static struct attribute *snbep_uncore_pcu_formats_attr[] = { - &format_attr_event_ext.attr, + &format_attr_event.attr, &format_attr_occ_sel.attr, &format_attr_edge.attr, &format_attr_inv.attr, @@ -1313,7 +1310,7 @@ static struct attribute *ivbep_uncore_cbox_formats_attr[] = { }; static struct attribute *ivbep_uncore_pcu_formats_attr[] = { - &format_attr_event_ext.attr, + &format_attr_event.attr, &format_attr_occ_sel.attr, &format_attr_edge.attr, &format_attr_thresh5.attr, From 7b0fd56930399d87241ad2f49d48c315307471ee Mon Sep 17 00:00:00 2001 From: Srinivas Pandruvada Date: Sun, 20 Mar 2016 16:52:18 -0700 Subject: [PATCH 24/44] perf/x86/intel/rapl: Add missing Broadwell models Added Broadwell-H and Broadwell-Server. Signed-off-by: Srinivas Pandruvada Cc: Alexander Shishkin Cc: Arnaldo Carvalho de Melo Cc: David Ahern Cc: Jiri Olsa Cc: Linus Torvalds Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Thomas Gleixner Cc: Vince Weaver Cc: bp@alien8.de Link: http://lkml.kernel.org/r/1458517938-25308-1-git-send-email-srinivas.pandruvada@linux.intel.com Signed-off-by: Ingo Molnar --- arch/x86/events/intel/rapl.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/x86/events/intel/rapl.c b/arch/x86/events/intel/rapl.c index b834a3f55a01..70c93f9b03ac 100644 --- a/arch/x86/events/intel/rapl.c +++ b/arch/x86/events/intel/rapl.c @@ -711,6 +711,7 @@ static int __init rapl_pmu_init(void) rapl_pmu_events_group.attrs = rapl_events_cln_attr; break; case 63: /* Haswell-Server */ + case 79: /* Broadwell-Server */ apply_quirk = true; rapl_cntr_mask = RAPL_IDX_SRV; rapl_pmu_events_group.attrs = rapl_events_srv_attr; @@ -718,6 +719,7 @@ static int __init rapl_pmu_init(void) case 60: /* Haswell */ case 69: /* Haswell-Celeron */ case 61: /* Broadwell */ + case 71: /* Broadwell-H */ rapl_cntr_mask = RAPL_IDX_HSW; rapl_pmu_events_group.attrs = rapl_events_hsw_attr; break; From 3c52b658b8e4fbbf7975932bbdc4798421dbcb15 Mon Sep 17 00:00:00 2001 From: Jakub Jelen Date: Sat, 19 Mar 2016 12:58:07 +0100 Subject: [PATCH 25/44] perf bench numa: Fix assertion for nodes bitfield Comparing bits and bytes in numa benchmark assertion I hit the issue on two socket Power8 machine presenting its numa nodes as 0,1,16,17 (according to numactl). Therefore I got error (and hang of parent process): perf: bench/numa.c:296: bind_to_memnode: Assertion `!(g->p.nr_nodes > (int)sizeof(nodemask))' failed. This is obviously false positive. We can fit all the 18 nodes into bitfield of 8 bytes (long on 64b architecture). Signed-off-by: Jakub Jelen Cc: Alexander Shishkin Cc: Jakub Jelen Cc: Peter Zijlstra Cc: trivial@kernel.org Link: http://lkml.kernel.org/r/1458388687-24421-1-git-send-email-jakuje@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/bench/numa.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/bench/numa.c b/tools/perf/bench/numa.c index 5049d6357a46..7500d959d7eb 100644 --- a/tools/perf/bench/numa.c +++ b/tools/perf/bench/numa.c @@ -293,7 +293,7 @@ static void bind_to_memnode(int node) if (node == -1) return; - BUG_ON(g->p.nr_nodes > (int)sizeof(nodemask)); + BUG_ON(g->p.nr_nodes > (int)sizeof(nodemask)*8); nodemask = 1L << node; ret = set_mempolicy(MPOL_BIND, &nodemask, sizeof(nodemask)*8); From 4ca0d8193f8b6b2c74d05d9bbcbaa99fdd553503 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Mon, 21 Mar 2016 08:56:33 -0700 Subject: [PATCH 26/44] perf list: Fix documentation of :ppp Correctly document what is implemented for :ppp on Intel CPUs in recent kernels. Signed-off-by: Andi Kleen Acked-by: Jiri Olsa Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1458575793-12091-2-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/perf-list.txt | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/tools/perf/Documentation/perf-list.txt b/tools/perf/Documentation/perf-list.txt index 79483f40e991..ec723d0a5bb3 100644 --- a/tools/perf/Documentation/perf-list.txt +++ b/tools/perf/Documentation/perf-list.txt @@ -40,10 +40,12 @@ address should be. The 'p' modifier can be specified multiple times: 0 - SAMPLE_IP can have arbitrary skid 1 - SAMPLE_IP must have constant skid 2 - SAMPLE_IP requested to have 0 skid - 3 - SAMPLE_IP must have 0 skid + 3 - SAMPLE_IP must have 0 skid, or uses randomization to avoid + sample shadowing effects. For Intel systems precise event sampling is implemented with PEBS -which supports up to precise-level 2. +which supports up to precise-level 2, and precise level 3 for +some special cases On AMD systems it is implemented using IBS (up to precise-level 2). The precise modifier works with event types 0x76 (cpu-cycles, CPU From b8f8eb84f4834b5232faf57559adbc80dbcf85da Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Tue, 22 Mar 2016 13:09:37 -0300 Subject: [PATCH 27/44] perf tools: Remove misplaced __maybe_unused All over the tree. Cc: David Ahern cc: Jiri Olsa Cc: Namhyung Kim Cc: Ravi Bangoria Link: http://lkml.kernel.org/n/tip-8nzhnokxyp8y4v7gf0j00oyb@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/bench/bench.h | 2 +- tools/perf/builtin-inject.c | 3 +-- tools/perf/builtin-script.c | 2 +- tools/perf/ui/gtk/hists.c | 2 +- tools/perf/util/annotate.h | 2 +- tools/perf/util/auxtrace.h | 2 +- tools/perf/util/data-convert-bt.c | 2 +- tools/perf/util/dso.h | 2 +- tools/perf/util/header.h | 2 +- tools/perf/util/hist.c | 2 +- tools/perf/util/hist.h | 3 +-- tools/perf/util/intel-bts.c | 2 +- tools/perf/util/machine.h | 2 +- tools/perf/util/sort.c | 2 +- tools/perf/util/stat-shadow.c | 18 ++++++++---------- 15 files changed, 22 insertions(+), 26 deletions(-) diff --git a/tools/perf/bench/bench.h b/tools/perf/bench/bench.h index a50df86f2b9b..7e7e43207bbd 100644 --- a/tools/perf/bench/bench.h +++ b/tools/perf/bench/bench.h @@ -29,7 +29,7 @@ extern int bench_numa(int argc, const char **argv, const char *prefix); extern int bench_sched_messaging(int argc, const char **argv, const char *prefix); extern int bench_sched_pipe(int argc, const char **argv, const char *prefix); extern int bench_mem_memcpy(int argc, const char **argv, - const char *prefix __maybe_unused); + const char *prefix); extern int bench_mem_memset(int argc, const char **argv, const char *prefix); extern int bench_futex_hash(int argc, const char **argv, const char *prefix); extern int bench_futex_wake(int argc, const char **argv, const char *prefix); diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c index 7fa68663ed72..b33b42c009ed 100644 --- a/tools/perf/builtin-inject.c +++ b/tools/perf/builtin-inject.c @@ -131,8 +131,7 @@ static int copy_bytes(struct perf_inject *inject, int fd, off_t size) static s64 perf_event__repipe_auxtrace(struct perf_tool *tool, union perf_event *event, - struct perf_session *session - __maybe_unused) + struct perf_session *session) { struct perf_inject *inject = container_of(tool, struct perf_inject, tool); diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index 57f9a7e7f7d3..d04c8e7a9507 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -498,7 +498,7 @@ static void print_sample_brstack(union perf_event *event __maybe_unused, } } -static void print_sample_brstacksym(union perf_event *event __maybe_unused, +static void print_sample_brstacksym(union perf_event *event, struct perf_sample *sample, struct thread *thread __maybe_unused, struct perf_event_attr *attr __maybe_unused) diff --git a/tools/perf/ui/gtk/hists.c b/tools/perf/ui/gtk/hists.c index bd9bf7e343b1..2aa45b606fa4 100644 --- a/tools/perf/ui/gtk/hists.c +++ b/tools/perf/ui/gtk/hists.c @@ -55,7 +55,7 @@ static u64 he_get_acc_##_field(struct hist_entry *he) \ return he->stat_acc->_field; \ } \ \ -static int perf_gtk__hpp_color_##_type(struct perf_hpp_fmt *fmt __maybe_unused, \ +static int perf_gtk__hpp_color_##_type(struct perf_hpp_fmt *fmt, \ struct perf_hpp *hpp, \ struct hist_entry *he) \ { \ diff --git a/tools/perf/util/annotate.h b/tools/perf/util/annotate.h index cea323d9ee7e..9241f8c2b7e1 100644 --- a/tools/perf/util/annotate.h +++ b/tools/perf/util/annotate.h @@ -158,7 +158,7 @@ int symbol__annotate(struct symbol *sym, struct map *map, size_t privsize); int hist_entry__annotate(struct hist_entry *he, size_t privsize); -int symbol__annotate_init(struct map *map __maybe_unused, struct symbol *sym); +int symbol__annotate_init(struct map *map, struct symbol *sym); int symbol__annotate_printf(struct symbol *sym, struct map *map, struct perf_evsel *evsel, bool full_paths, int min_pcnt, int max_lines, int context); diff --git a/tools/perf/util/auxtrace.h b/tools/perf/util/auxtrace.h index e5a8e2d4f2af..57ff31ecb8e4 100644 --- a/tools/perf/util/auxtrace.h +++ b/tools/perf/util/auxtrace.h @@ -517,7 +517,7 @@ static inline void auxtrace__free(struct perf_session *session) static inline struct auxtrace_record * auxtrace_record__init(struct perf_evlist *evlist __maybe_unused, - int *err __maybe_unused) + int *err) { *err = 0; return NULL; diff --git a/tools/perf/util/data-convert-bt.c b/tools/perf/util/data-convert-bt.c index 811af89ce0bb..bbf69d248ec5 100644 --- a/tools/perf/util/data-convert-bt.c +++ b/tools/perf/util/data-convert-bt.c @@ -632,7 +632,7 @@ static bool is_flush_needed(struct ctf_stream *cs) } static int process_sample_event(struct perf_tool *tool, - union perf_event *_event __maybe_unused, + union perf_event *_event, struct perf_sample *sample, struct perf_evsel *evsel, struct machine *machine __maybe_unused) diff --git a/tools/perf/util/dso.h b/tools/perf/util/dso.h index ef3dbc989013..0953280629cf 100644 --- a/tools/perf/util/dso.h +++ b/tools/perf/util/dso.h @@ -302,7 +302,7 @@ int __kmod_path__parse(struct kmod_path *m, const char *path, * TODO */ int dso__data_get_fd(struct dso *dso, struct machine *machine); -void dso__data_put_fd(struct dso *dso __maybe_unused); +void dso__data_put_fd(struct dso *dso); void dso__data_close(struct dso *dso); off_t dso__data_size(struct dso *dso, struct machine *machine); diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h index 3d87ca823c0a..d306ca118449 100644 --- a/tools/perf/util/header.h +++ b/tools/perf/util/header.h @@ -121,7 +121,7 @@ int perf_event__synthesize_event_update_cpus(struct perf_tool *tool, perf_event__handler_t process); int perf_event__process_attr(struct perf_tool *tool, union perf_event *event, struct perf_evlist **pevlist); -int perf_event__process_event_update(struct perf_tool *tool __maybe_unused, +int perf_event__process_event_update(struct perf_tool *tool, union perf_event *event, struct perf_evlist **pevlist); size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp); diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c index 290b3cbf6877..31c4641fe5ff 100644 --- a/tools/perf/util/hist.c +++ b/tools/perf/util/hist.c @@ -670,7 +670,7 @@ iter_prepare_branch_entry(struct hist_entry_iter *iter, struct addr_location *al } static int -iter_add_single_branch_entry(struct hist_entry_iter *iter __maybe_unused, +iter_add_single_branch_entry(struct hist_entry_iter *iter, struct addr_location *al __maybe_unused) { /* to avoid calling callback function */ diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h index ead18c82294f..bec0cd660fbd 100644 --- a/tools/perf/util/hist.h +++ b/tools/perf/util/hist.h @@ -433,8 +433,7 @@ void hist__account_cycles(struct branch_stack *bs, struct addr_location *al, struct perf_sample *sample, bool nonany_branch_mode); struct option; -int parse_filter_percentage(const struct option *opt __maybe_unused, - const char *arg, int unset __maybe_unused); +int parse_filter_percentage(const struct option *opt, const char *arg, int unset); int perf_hist_config(const char *var, const char *value); void perf_hpp_list__init(struct perf_hpp_list *list); diff --git a/tools/perf/util/intel-bts.c b/tools/perf/util/intel-bts.c index eb0e7f8bf515..6bc3ecd2e7ca 100644 --- a/tools/perf/util/intel-bts.c +++ b/tools/perf/util/intel-bts.c @@ -678,7 +678,7 @@ static int intel_bts_process_auxtrace_event(struct perf_session *session, return 0; } -static int intel_bts_flush(struct perf_session *session __maybe_unused, +static int intel_bts_flush(struct perf_session *session, struct perf_tool *tool __maybe_unused) { struct intel_bts *bts = container_of(session->auxtrace, struct intel_bts, diff --git a/tools/perf/util/machine.h b/tools/perf/util/machine.h index 1a3e45baf97f..8499db281158 100644 --- a/tools/perf/util/machine.h +++ b/tools/perf/util/machine.h @@ -94,7 +94,7 @@ int machine__process_aux_event(struct machine *machine, union perf_event *event); int machine__process_itrace_start_event(struct machine *machine, union perf_event *event); -int machine__process_switch_event(struct machine *machine __maybe_unused, +int machine__process_switch_event(struct machine *machine, union perf_event *event); int machine__process_mmap_event(struct machine *machine, union perf_event *event, struct perf_sample *sample); diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c index 93fa136b0025..47966a1618c7 100644 --- a/tools/perf/util/sort.c +++ b/tools/perf/util/sort.c @@ -2225,7 +2225,7 @@ int hpp_dimension__add_output(unsigned col) } static int sort_dimension__add(struct perf_hpp_list *list, const char *tok, - struct perf_evlist *evlist __maybe_unused, + struct perf_evlist *evlist, int level) { unsigned int i; diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c index b33ffb2af2cf..fdb71961143e 100644 --- a/tools/perf/util/stat-shadow.c +++ b/tools/perf/util/stat-shadow.c @@ -152,8 +152,7 @@ static const char *get_ratio_color(enum grc_type type, double ratio) } static void print_stalled_cycles_frontend(int cpu, - struct perf_evsel *evsel - __maybe_unused, double avg, + struct perf_evsel *evsel, double avg, struct perf_stat_output_ctx *out) { double total, ratio = 0.0; @@ -175,8 +174,7 @@ static void print_stalled_cycles_frontend(int cpu, } static void print_stalled_cycles_backend(int cpu, - struct perf_evsel *evsel - __maybe_unused, double avg, + struct perf_evsel *evsel, double avg, struct perf_stat_output_ctx *out) { double total, ratio = 0.0; @@ -194,7 +192,7 @@ static void print_stalled_cycles_backend(int cpu, } static void print_branch_misses(int cpu, - struct perf_evsel *evsel __maybe_unused, + struct perf_evsel *evsel, double avg, struct perf_stat_output_ctx *out) { @@ -213,7 +211,7 @@ static void print_branch_misses(int cpu, } static void print_l1_dcache_misses(int cpu, - struct perf_evsel *evsel __maybe_unused, + struct perf_evsel *evsel, double avg, struct perf_stat_output_ctx *out) { @@ -232,7 +230,7 @@ static void print_l1_dcache_misses(int cpu, } static void print_l1_icache_misses(int cpu, - struct perf_evsel *evsel __maybe_unused, + struct perf_evsel *evsel, double avg, struct perf_stat_output_ctx *out) { @@ -250,7 +248,7 @@ static void print_l1_icache_misses(int cpu, } static void print_dtlb_cache_misses(int cpu, - struct perf_evsel *evsel __maybe_unused, + struct perf_evsel *evsel, double avg, struct perf_stat_output_ctx *out) { @@ -268,7 +266,7 @@ static void print_dtlb_cache_misses(int cpu, } static void print_itlb_cache_misses(int cpu, - struct perf_evsel *evsel __maybe_unused, + struct perf_evsel *evsel, double avg, struct perf_stat_output_ctx *out) { @@ -286,7 +284,7 @@ static void print_itlb_cache_misses(int cpu, } static void print_ll_cache_misses(int cpu, - struct perf_evsel *evsel __maybe_unused, + struct perf_evsel *evsel, double avg, struct perf_stat_output_ctx *out) { From eb9f03231b7a27999abe22d3c5f71700338630c6 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Tue, 22 Mar 2016 19:00:43 -0300 Subject: [PATCH 28/44] perf tests: Forward the perf_sample in the dwarf unwind test It _will_ be used, no sense in receiving it and nor fowarding it along. Cc: Adrian Hunter Cc: Hemant Kumar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Naveen N. Rao Cc: Ravi Bangoria Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-ht8v5et209wuoh5o6nh9pzyq@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/tests/dwarf-unwind.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/perf/tests/dwarf-unwind.c b/tools/perf/tests/dwarf-unwind.c index 1c5c0221cea2..8f6eb853aaf7 100644 --- a/tools/perf/tests/dwarf-unwind.c +++ b/tools/perf/tests/dwarf-unwind.c @@ -20,10 +20,10 @@ static int mmap_handler(struct perf_tool *tool __maybe_unused, union perf_event *event, - struct perf_sample *sample __maybe_unused, + struct perf_sample *sample, struct machine *machine) { - return machine__process_mmap2_event(machine, event, NULL); + return machine__process_mmap2_event(machine, event, sample); } static int init_live_machine(struct machine *machine) From 473398a21d28c089555117a8db4ea04e371dd03c Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Tue, 22 Mar 2016 18:23:43 -0300 Subject: [PATCH 29/44] perf tools: Add cpumode to struct perf_sample To avoid parsing event->header.misc in many locations. This will also allow setting perf.sample.{ip,cpumode} in a single place, from tracepoint fields, as needed by 'perf kvm' with PPC guests, where the guest hardware counters is not available at the host. Cc: Adrian Hunter Cc: Hemant Kumar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Naveen N. Rao Cc: Ravi Bangoria Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-qp3yradhyt6q3wl895b1aat0@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-inject.c | 5 +---- tools/perf/builtin-script.c | 7 +++---- tools/perf/builtin-top.c | 5 +---- tools/perf/builtin-trace.c | 9 ++++----- tools/perf/tests/code-reading.c | 5 +---- tools/perf/tests/hists_common.c | 6 ++++-- tools/perf/tests/hists_cumulate.c | 1 + tools/perf/tests/hists_filter.c | 1 + tools/perf/tests/hists_link.c | 1 + tools/perf/tests/hists_output.c | 1 + tools/perf/util/build-id.c | 3 +-- tools/perf/util/event.c | 15 ++++++--------- tools/perf/util/event.h | 1 + tools/perf/util/evsel.c | 1 + tools/perf/util/machine.c | 14 ++++++-------- tools/perf/util/session.c | 5 ++--- 16 files changed, 35 insertions(+), 45 deletions(-) diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c index b33b42c009ed..d1a2d104f2bc 100644 --- a/tools/perf/builtin-inject.c +++ b/tools/perf/builtin-inject.c @@ -416,9 +416,6 @@ static int perf_event__inject_buildid(struct perf_tool *tool, { struct addr_location al; struct thread *thread; - u8 cpumode; - - cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; thread = machine__findnew_thread(machine, sample->pid, sample->tid); if (thread == NULL) { @@ -427,7 +424,7 @@ static int perf_event__inject_buildid(struct perf_tool *tool, goto repipe; } - thread__find_addr_map(thread, cpumode, MAP__FUNCTION, sample->ip, &al); + thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, sample->ip, &al); if (al.map != NULL) { if (!al.map->dso->hit) { diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index d04c8e7a9507..928a4411e023 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -498,14 +498,13 @@ static void print_sample_brstack(union perf_event *event __maybe_unused, } } -static void print_sample_brstacksym(union perf_event *event, +static void print_sample_brstacksym(union perf_event *event __maybe_unused, struct perf_sample *sample, struct thread *thread __maybe_unused, struct perf_event_attr *attr __maybe_unused) { struct branch_stack *br = sample->branch_stack; struct addr_location alf, alt; - u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; u64 i, from, to; if (!(br && br->nr)) @@ -518,11 +517,11 @@ static void print_sample_brstacksym(union perf_event *event, from = br->entries[i].from; to = br->entries[i].to; - thread__find_addr_map(thread, cpumode, MAP__FUNCTION, from, &alf); + thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, from, &alf); if (alf.map) alf.sym = map__find_symbol(alf.map, alf.addr, NULL); - thread__find_addr_map(thread, cpumode, MAP__FUNCTION, to, &alt); + thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, to, &alt); if (alt.map) alt.sym = map__find_symbol(alt.map, alt.addr, NULL); diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 94af190f6843..a287800bc495 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -809,7 +809,6 @@ static void perf_top__mmap_read_idx(struct perf_top *top, int idx) struct perf_session *session = top->session; union perf_event *event; struct machine *machine; - u8 origin; int ret; while ((event = perf_evlist__mmap_read(top->evlist, idx)) != NULL) { @@ -822,12 +821,10 @@ static void perf_top__mmap_read_idx(struct perf_top *top, int idx) evsel = perf_evlist__id2evsel(session->evlist, sample.id); assert(evsel != NULL); - origin = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; - if (event->header.type == PERF_RECORD_SAMPLE) ++top->samples; - switch (origin) { + switch (sample.cpumode) { case PERF_RECORD_MISC_USER: ++top->us_samples; if (top->hide_user_symbols) diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 8dc98c598b1a..93ac724fb635 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -2256,11 +2256,10 @@ static void print_location(FILE *f, struct perf_sample *sample, static int trace__pgfault(struct trace *trace, struct perf_evsel *evsel, - union perf_event *event, + union perf_event *event __maybe_unused, struct perf_sample *sample) { struct thread *thread; - u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; struct addr_location al; char map_type = 'd'; struct thread_trace *ttrace; @@ -2279,7 +2278,7 @@ static int trace__pgfault(struct trace *trace, if (trace->summary_only) goto out; - thread__find_addr_location(thread, cpumode, MAP__FUNCTION, + thread__find_addr_location(thread, sample->cpumode, MAP__FUNCTION, sample->ip, &al); trace__fprintf_entry_head(trace, thread, 0, sample->time, trace->output); @@ -2292,11 +2291,11 @@ static int trace__pgfault(struct trace *trace, fprintf(trace->output, "] => "); - thread__find_addr_location(thread, cpumode, MAP__VARIABLE, + thread__find_addr_location(thread, sample->cpumode, MAP__VARIABLE, sample->addr, &al); if (!al.map) { - thread__find_addr_location(thread, cpumode, + thread__find_addr_location(thread, sample->cpumode, MAP__FUNCTION, sample->addr, &al); if (al.map) diff --git a/tools/perf/tests/code-reading.c b/tools/perf/tests/code-reading.c index afc9ad0a0515..abd3f0ec0c0b 100644 --- a/tools/perf/tests/code-reading.c +++ b/tools/perf/tests/code-reading.c @@ -293,7 +293,6 @@ static int process_sample_event(struct machine *machine, { struct perf_sample sample; struct thread *thread; - u8 cpumode; int ret; if (perf_evlist__parse_sample(evlist, event, &sample)) { @@ -307,9 +306,7 @@ static int process_sample_event(struct machine *machine, return -1; } - cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; - - ret = read_object_code(sample.ip, READLEN, cpumode, thread, state); + ret = read_object_code(sample.ip, READLEN, sample.cpumode, thread, state); thread__put(thread); return ret; } diff --git a/tools/perf/tests/hists_common.c b/tools/perf/tests/hists_common.c index 071a8b5f5232..f55f4bd47932 100644 --- a/tools/perf/tests/hists_common.c +++ b/tools/perf/tests/hists_common.c @@ -100,9 +100,11 @@ struct machine *setup_fake_machine(struct machines *machines) } for (i = 0; i < ARRAY_SIZE(fake_mmap_info); i++) { + struct perf_sample sample = { + .cpumode = PERF_RECORD_MISC_USER, + }; union perf_event fake_mmap_event = { .mmap = { - .header = { .misc = PERF_RECORD_MISC_USER, }, .pid = fake_mmap_info[i].pid, .tid = fake_mmap_info[i].pid, .start = fake_mmap_info[i].start, @@ -114,7 +116,7 @@ struct machine *setup_fake_machine(struct machines *machines) strcpy(fake_mmap_event.mmap.filename, fake_mmap_info[i].filename); - machine__process_mmap_event(machine, &fake_mmap_event, NULL); + machine__process_mmap_event(machine, &fake_mmap_event, &sample); } for (i = 0; i < ARRAY_SIZE(fake_symbols); i++) { diff --git a/tools/perf/tests/hists_cumulate.c b/tools/perf/tests/hists_cumulate.c index ecf136c385d5..cf7eef73fbe6 100644 --- a/tools/perf/tests/hists_cumulate.c +++ b/tools/perf/tests/hists_cumulate.c @@ -97,6 +97,7 @@ static int add_hist_entries(struct hists *hists, struct machine *machine) else iter.ops = &hist_iter_normal; + sample.cpumode = PERF_RECORD_MISC_USER; sample.pid = fake_samples[i].pid; sample.tid = fake_samples[i].pid; sample.ip = fake_samples[i].ip; diff --git a/tools/perf/tests/hists_filter.c b/tools/perf/tests/hists_filter.c index 34b945a55d4d..1c9e19352cb6 100644 --- a/tools/perf/tests/hists_filter.c +++ b/tools/perf/tests/hists_filter.c @@ -76,6 +76,7 @@ static int add_hist_entries(struct perf_evlist *evlist, hists->dso_filter = NULL; hists->symbol_filter_str = NULL; + sample.cpumode = PERF_RECORD_MISC_USER; sample.pid = fake_samples[i].pid; sample.tid = fake_samples[i].pid; sample.ip = fake_samples[i].ip; diff --git a/tools/perf/tests/hists_link.c b/tools/perf/tests/hists_link.c index 64b257d8d557..7885b1d324e4 100644 --- a/tools/perf/tests/hists_link.c +++ b/tools/perf/tests/hists_link.c @@ -82,6 +82,7 @@ static int add_hist_entries(struct perf_evlist *evlist, struct machine *machine) }, }; + sample.cpumode = PERF_RECORD_MISC_USER; sample.pid = fake_common_samples[k].pid; sample.tid = fake_common_samples[k].pid; sample.ip = fake_common_samples[k].ip; diff --git a/tools/perf/tests/hists_output.c b/tools/perf/tests/hists_output.c index 23cce67c7e48..03e4e9c47a55 100644 --- a/tools/perf/tests/hists_output.c +++ b/tools/perf/tests/hists_output.c @@ -63,6 +63,7 @@ static int add_hist_entries(struct hists *hists, struct machine *machine) .hide_unresolved = false, }; + sample.cpumode = PERF_RECORD_MISC_USER; sample.cpu = fake_samples[i].cpu; sample.pid = fake_samples[i].pid; sample.tid = fake_samples[i].pid; diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c index f1479eeef7da..0573c2ec861d 100644 --- a/tools/perf/util/build-id.c +++ b/tools/perf/util/build-id.c @@ -28,7 +28,6 @@ int build_id__mark_dso_hit(struct perf_tool *tool __maybe_unused, struct machine *machine) { struct addr_location al; - u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; struct thread *thread = machine__findnew_thread(machine, sample->pid, sample->tid); @@ -38,7 +37,7 @@ int build_id__mark_dso_hit(struct perf_tool *tool __maybe_unused, return -1; } - thread__find_addr_map(thread, cpumode, MAP__FUNCTION, sample->ip, &al); + thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, sample->ip, &al); if (al.map != NULL) al.map->dso->hit = 1; diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c index 7bad5c3fa7b7..f679caac12d0 100644 --- a/tools/perf/util/event.c +++ b/tools/perf/util/event.c @@ -1295,12 +1295,11 @@ void thread__find_addr_location(struct thread *thread, * Callers need to drop the reference to al->thread, obtained in * machine__findnew_thread() */ -int perf_event__preprocess_sample(const union perf_event *event, +int perf_event__preprocess_sample(const union perf_event *event __maybe_unused, struct machine *machine, struct addr_location *al, struct perf_sample *sample) { - u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; struct thread *thread = machine__findnew_thread(machine, sample->pid, sample->tid); @@ -1315,11 +1314,11 @@ int perf_event__preprocess_sample(const union perf_event *event, * events, but for older perf.data files there was no such thing, so do * it now. */ - if (cpumode == PERF_RECORD_MISC_KERNEL && + if (sample->cpumode == PERF_RECORD_MISC_KERNEL && machine__kernel_map(machine) == NULL) machine__create_kernel_maps(machine); - thread__find_addr_map(thread, cpumode, MAP__FUNCTION, sample->ip, al); + thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, sample->ip, al); dump_printf(" ...... dso: %s\n", al->map ? al->map->dso->long_name : al->level == 'H' ? "[hypervisor]" : ""); @@ -1395,16 +1394,14 @@ bool sample_addr_correlates_sym(struct perf_event_attr *attr) return false; } -void perf_event__preprocess_sample_addr(union perf_event *event, +void perf_event__preprocess_sample_addr(union perf_event *event __maybe_unused, struct perf_sample *sample, struct thread *thread, struct addr_location *al) { - u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; - - thread__find_addr_map(thread, cpumode, MAP__FUNCTION, sample->addr, al); + thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, sample->addr, al); if (!al->map) - thread__find_addr_map(thread, cpumode, MAP__VARIABLE, + thread__find_addr_map(thread, sample->cpumode, MAP__VARIABLE, sample->addr, al); al->cpu = sample->cpu; diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h index b7ffb7ee9971..f5a2e67c86aa 100644 --- a/tools/perf/util/event.h +++ b/tools/perf/util/event.h @@ -192,6 +192,7 @@ struct perf_sample { u64 data_src; u32 flags; u16 insn_len; + u8 cpumode; void *raw_data; struct ip_callchain *callchain; struct branch_stack *branch_stack; diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 0902fe418754..738ce226002b 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -1643,6 +1643,7 @@ int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event, data->stream_id = data->id = data->time = -1ULL; data->period = evsel->attr.sample_period; data->weight = 0; + data->cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; if (event->header.type != PERF_RECORD_SAMPLE) { if (!evsel->attr.sample_id_all) diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c index ad79297c76c8..80b9b6a87990 100644 --- a/tools/perf/util/machine.c +++ b/tools/perf/util/machine.c @@ -1301,9 +1301,8 @@ static int machine__process_kernel_mmap_event(struct machine *machine, int machine__process_mmap2_event(struct machine *machine, union perf_event *event, - struct perf_sample *sample __maybe_unused) + struct perf_sample *sample) { - u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; struct thread *thread; struct map *map; enum map_type type; @@ -1312,8 +1311,8 @@ int machine__process_mmap2_event(struct machine *machine, if (dump_trace) perf_event__fprintf_mmap2(event, stdout); - if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL || - cpumode == PERF_RECORD_MISC_KERNEL) { + if (sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL || + sample->cpumode == PERF_RECORD_MISC_KERNEL) { ret = machine__process_kernel_mmap_event(machine, event); if (ret < 0) goto out_problem; @@ -1355,9 +1354,8 @@ int machine__process_mmap2_event(struct machine *machine, } int machine__process_mmap_event(struct machine *machine, union perf_event *event, - struct perf_sample *sample __maybe_unused) + struct perf_sample *sample) { - u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; struct thread *thread; struct map *map; enum map_type type; @@ -1366,8 +1364,8 @@ int machine__process_mmap_event(struct machine *machine, union perf_event *event if (dump_trace) perf_event__fprintf_mmap(event, stdout); - if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL || - cpumode == PERF_RECORD_MISC_KERNEL) { + if (sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL || + sample->cpumode == PERF_RECORD_MISC_KERNEL) { ret = machine__process_kernel_mmap_event(machine, event); if (ret < 0) goto out_problem; diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 60b3593d210d..4abd85c6346d 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -1107,12 +1107,11 @@ static struct machine *machines__find_for_cpumode(struct machines *machines, union perf_event *event, struct perf_sample *sample) { - const u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; struct machine *machine; if (perf_guest && - ((cpumode == PERF_RECORD_MISC_GUEST_KERNEL) || - (cpumode == PERF_RECORD_MISC_GUEST_USER))) { + ((sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL) || + (sample->cpumode == PERF_RECORD_MISC_GUEST_USER))) { u32 pid; if (event->header.type == PERF_RECORD_MMAP From bb3eb56622d1b5932a7708d0af5f3b00f12817b6 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Tue, 22 Mar 2016 18:39:09 -0300 Subject: [PATCH 30/44] perf machine: Rename perf_event__preprocess_sample to machine__resolve Since we only deal with fields in the passed struct perf_sample move this method to struct machine, that is where the perf_sample fields will be resolved to a struct addr_location, i.e. thread, map, symbol, etc. Cc: Adrian Hunter Cc: Hemant Kumar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Naveen N. Rao Cc: Ravi Bangoria Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-a1ww2lbm2vbuqsv4p7ilubu9@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-annotate.c | 2 +- tools/perf/builtin-diff.c | 2 +- tools/perf/builtin-mem.c | 2 +- tools/perf/builtin-report.c | 2 +- tools/perf/builtin-script.c | 2 +- tools/perf/builtin-timechart.c | 2 +- tools/perf/builtin-top.c | 2 +- tools/perf/tests/hists_cumulate.c | 8 +------- tools/perf/tests/hists_filter.c | 8 +------- tools/perf/tests/hists_link.c | 19 +++---------------- tools/perf/tests/hists_output.c | 8 +------- tools/perf/util/event.c | 6 ++---- tools/perf/util/event.h | 6 ++---- 13 files changed, 17 insertions(+), 52 deletions(-) diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c index cfe366375c4b..814158393656 100644 --- a/tools/perf/builtin-annotate.c +++ b/tools/perf/builtin-annotate.c @@ -94,7 +94,7 @@ static int process_sample_event(struct perf_tool *tool, struct addr_location al; int ret = 0; - if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) { + if (machine__resolve(machine, &al, sample) < 0) { pr_warning("problem processing %d event, skipping it.\n", event->header.type); return -1; diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c index 4d72359fd15a..8053a8ceefda 100644 --- a/tools/perf/builtin-diff.c +++ b/tools/perf/builtin-diff.c @@ -330,7 +330,7 @@ static int diff__process_sample_event(struct perf_tool *tool __maybe_unused, struct hists *hists = evsel__hists(evsel); int ret = -1; - if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) { + if (machine__resolve(machine, &al, sample) < 0) { pr_warning("problem processing %d event, skipping it.\n", event->header.type); return -1; diff --git a/tools/perf/builtin-mem.c b/tools/perf/builtin-mem.c index 88aeac9aa1da..85db3be4b3cb 100644 --- a/tools/perf/builtin-mem.c +++ b/tools/perf/builtin-mem.c @@ -131,7 +131,7 @@ dump_raw_samples(struct perf_tool *tool, struct addr_location al; const char *fmt; - if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) { + if (machine__resolve(machine, &al, sample) < 0) { fprintf(stderr, "problem processing %d event, skipping it.\n", event->header.type); return -1; diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 7eea49f9ed46..ab47273a5373 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -154,7 +154,7 @@ static int process_sample_event(struct perf_tool *tool, }; int ret = 0; - if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) { + if (machine__resolve(machine, &al, sample) < 0) { pr_debug("problem processing %d event, skipping it.\n", event->header.type); return -1; diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index 928a4411e023..02a65d15c594 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -904,7 +904,7 @@ static int process_sample_event(struct perf_tool *tool, return 0; } - if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) { + if (machine__resolve(machine, &al, sample) < 0) { pr_err("problem processing %d event, skipping it.\n", event->header.type); return -1; diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c index bd7a7757176f..40cc9bb3506c 100644 --- a/tools/perf/builtin-timechart.c +++ b/tools/perf/builtin-timechart.c @@ -489,7 +489,7 @@ static const char *cat_backtrace(union perf_event *event, if (!chain) goto exit; - if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) { + if (machine__resolve(machine, &al, sample) < 0) { fprintf(stderr, "problem processing %d event, skipping it.\n", event->header.type); goto exit; diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index a287800bc495..9b0f2df2faa0 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -728,7 +728,7 @@ static void perf_event__process_sample(struct perf_tool *tool, if (event->header.misc & PERF_RECORD_MISC_EXACT_IP) top->exact_samples++; - if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) + if (machine__resolve(machine, &al, sample) < 0) return; if (!top->kptr_restrict_warned && diff --git a/tools/perf/tests/hists_cumulate.c b/tools/perf/tests/hists_cumulate.c index cf7eef73fbe6..ed5aa9eaeb6c 100644 --- a/tools/perf/tests/hists_cumulate.c +++ b/tools/perf/tests/hists_cumulate.c @@ -81,11 +81,6 @@ static int add_hist_entries(struct hists *hists, struct machine *machine) size_t i; for (i = 0; i < ARRAY_SIZE(fake_samples); i++) { - const union perf_event event = { - .header = { - .misc = PERF_RECORD_MISC_USER, - }, - }; struct hist_entry_iter iter = { .evsel = evsel, .sample = &sample, @@ -103,8 +98,7 @@ static int add_hist_entries(struct hists *hists, struct machine *machine) sample.ip = fake_samples[i].ip; sample.callchain = (struct ip_callchain *)fake_callchains[i]; - if (perf_event__preprocess_sample(&event, machine, &al, - &sample) < 0) + if (machine__resolve(machine, &al, &sample) < 0) goto out; if (hist_entry_iter__add(&iter, &al, PERF_MAX_STACK_DEPTH, diff --git a/tools/perf/tests/hists_filter.c b/tools/perf/tests/hists_filter.c index 1c9e19352cb6..b825d24f8186 100644 --- a/tools/perf/tests/hists_filter.c +++ b/tools/perf/tests/hists_filter.c @@ -58,11 +58,6 @@ static int add_hist_entries(struct perf_evlist *evlist, */ evlist__for_each(evlist, evsel) { for (i = 0; i < ARRAY_SIZE(fake_samples); i++) { - const union perf_event event = { - .header = { - .misc = PERF_RECORD_MISC_USER, - }, - }; struct hist_entry_iter iter = { .evsel = evsel, .sample = &sample, @@ -81,8 +76,7 @@ static int add_hist_entries(struct perf_evlist *evlist, sample.tid = fake_samples[i].pid; sample.ip = fake_samples[i].ip; - if (perf_event__preprocess_sample(&event, machine, &al, - &sample) < 0) + if (machine__resolve(machine, &al, &sample) < 0) goto out; al.socket = fake_samples[i].socket; diff --git a/tools/perf/tests/hists_link.c b/tools/perf/tests/hists_link.c index 7885b1d324e4..358324e47805 100644 --- a/tools/perf/tests/hists_link.c +++ b/tools/perf/tests/hists_link.c @@ -76,18 +76,12 @@ static int add_hist_entries(struct perf_evlist *evlist, struct machine *machine) struct hists *hists = evsel__hists(evsel); for (k = 0; k < ARRAY_SIZE(fake_common_samples); k++) { - const union perf_event event = { - .header = { - .misc = PERF_RECORD_MISC_USER, - }, - }; - sample.cpumode = PERF_RECORD_MISC_USER; sample.pid = fake_common_samples[k].pid; sample.tid = fake_common_samples[k].pid; sample.ip = fake_common_samples[k].ip; - if (perf_event__preprocess_sample(&event, machine, &al, - &sample) < 0) + + if (machine__resolve(machine, &al, &sample) < 0) goto out; he = __hists__add_entry(hists, &al, NULL, @@ -103,17 +97,10 @@ static int add_hist_entries(struct perf_evlist *evlist, struct machine *machine) } for (k = 0; k < ARRAY_SIZE(fake_samples[i]); k++) { - const union perf_event event = { - .header = { - .misc = PERF_RECORD_MISC_USER, - }, - }; - sample.pid = fake_samples[i][k].pid; sample.tid = fake_samples[i][k].pid; sample.ip = fake_samples[i][k].ip; - if (perf_event__preprocess_sample(&event, machine, &al, - &sample) < 0) + if (machine__resolve(machine, &al, &sample) < 0) goto out; he = __hists__add_entry(hists, &al, NULL, diff --git a/tools/perf/tests/hists_output.c b/tools/perf/tests/hists_output.c index 03e4e9c47a55..d3556fbe8c5c 100644 --- a/tools/perf/tests/hists_output.c +++ b/tools/perf/tests/hists_output.c @@ -51,11 +51,6 @@ static int add_hist_entries(struct hists *hists, struct machine *machine) size_t i; for (i = 0; i < ARRAY_SIZE(fake_samples); i++) { - const union perf_event event = { - .header = { - .misc = PERF_RECORD_MISC_USER, - }, - }; struct hist_entry_iter iter = { .evsel = evsel, .sample = &sample, @@ -69,8 +64,7 @@ static int add_hist_entries(struct hists *hists, struct machine *machine) sample.tid = fake_samples[i].pid; sample.ip = fake_samples[i].ip; - if (perf_event__preprocess_sample(&event, machine, &al, - &sample) < 0) + if (machine__resolve(machine, &al, &sample) < 0) goto out; if (hist_entry_iter__add(&iter, &al, PERF_MAX_STACK_DEPTH, diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c index f679caac12d0..a89c29e2e0a9 100644 --- a/tools/perf/util/event.c +++ b/tools/perf/util/event.c @@ -1295,10 +1295,8 @@ void thread__find_addr_location(struct thread *thread, * Callers need to drop the reference to al->thread, obtained in * machine__findnew_thread() */ -int perf_event__preprocess_sample(const union perf_event *event __maybe_unused, - struct machine *machine, - struct addr_location *al, - struct perf_sample *sample) +int machine__resolve(struct machine *machine, struct addr_location *al, + struct perf_sample *sample) { struct thread *thread = machine__findnew_thread(machine, sample->pid, sample->tid); diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h index f5a2e67c86aa..22921fd0f5b8 100644 --- a/tools/perf/util/event.h +++ b/tools/perf/util/event.h @@ -598,10 +598,8 @@ int perf_event__process(struct perf_tool *tool, struct addr_location; -int perf_event__preprocess_sample(const union perf_event *event, - struct machine *machine, - struct addr_location *al, - struct perf_sample *sample); +int machine__resolve(struct machine *machine, struct addr_location *al, + struct perf_sample *sample); void addr_location__put(struct addr_location *al); From c2740a87ca989ca42b0c078e021654e247a08311 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Tue, 22 Mar 2016 18:44:46 -0300 Subject: [PATCH 31/44] perf thread: Rename perf_event__preprocess_sample_addr to thread__resolve Since none of the perf_event fields are used anymore, just the perf_sample ones, and since this resolves to (map, symbol) from data structures within struct thread, rename it to thread__resolve and make the argument ordering similar to the one in machine__resolve(). Cc: Adrian Hunter Cc: Hemant Kumar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Naveen N. Rao Cc: Ravi Bangoria Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-2b33hs9bp550tezzlhl4kejh@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-script.c | 4 ++-- tools/perf/util/db-export.c | 2 +- tools/perf/util/event.c | 6 ++---- tools/perf/util/event.h | 6 ++---- 4 files changed, 7 insertions(+), 11 deletions(-) diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index 02a65d15c594..4bc92070363b 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -537,7 +537,7 @@ static void print_sample_brstacksym(union perf_event *event __maybe_unused, } -static void print_sample_addr(union perf_event *event, +static void print_sample_addr(union perf_event *event __maybe_unused, struct perf_sample *sample, struct thread *thread, struct perf_event_attr *attr) @@ -549,7 +549,7 @@ static void print_sample_addr(union perf_event *event, if (!sample_addr_correlates_sym(attr)) return; - perf_event__preprocess_sample_addr(event, sample, thread, &al); + thread__resolve(thread, &al, sample); if (PRINT_FIELD(SYM)) { printf(" "); diff --git a/tools/perf/util/db-export.c b/tools/perf/util/db-export.c index 1c9689e4cc17..049438d51b9a 100644 --- a/tools/perf/util/db-export.c +++ b/tools/perf/util/db-export.c @@ -333,7 +333,7 @@ int db_export__sample(struct db_export *dbe, union perf_event *event, sample_addr_correlates_sym(&evsel->attr)) { struct addr_location addr_al; - perf_event__preprocess_sample_addr(event, sample, thread, &addr_al); + thread__resolve(thread, &addr_al, sample); err = db_ids_from_al(dbe, &addr_al, &es.addr_dso_db_id, &es.addr_sym_db_id, &es.addr_offset); if (err) diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c index a89c29e2e0a9..52cf479bc593 100644 --- a/tools/perf/util/event.c +++ b/tools/perf/util/event.c @@ -1392,10 +1392,8 @@ bool sample_addr_correlates_sym(struct perf_event_attr *attr) return false; } -void perf_event__preprocess_sample_addr(union perf_event *event __maybe_unused, - struct perf_sample *sample, - struct thread *thread, - struct addr_location *al) +void thread__resolve(struct thread *thread, struct addr_location *al, + struct perf_sample *sample) { thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, sample->addr, al); if (!al->map) diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h index 22921fd0f5b8..6bb1c928350d 100644 --- a/tools/perf/util/event.h +++ b/tools/perf/util/event.h @@ -607,10 +607,8 @@ struct thread; bool is_bts_event(struct perf_event_attr *attr); bool sample_addr_correlates_sym(struct perf_event_attr *attr); -void perf_event__preprocess_sample_addr(union perf_event *event, - struct perf_sample *sample, - struct thread *thread, - struct addr_location *al); +void thread__resolve(struct thread *thread, struct addr_location *al, + struct perf_sample *sample); const char *perf_event__name(unsigned int id); From a3dff304ca50cbfbe3f0e76ee49c439990932ed5 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 23 Mar 2016 11:55:24 -0300 Subject: [PATCH 32/44] perf script: Remove lots of unused arguments Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-script.c | 37 ++++++++++++++----------------------- 1 file changed, 14 insertions(+), 23 deletions(-) diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index 4bc92070363b..3770c3dffe5e 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -405,9 +405,7 @@ static int perf_session__check_output_opt(struct perf_session *session) return 0; } -static void print_sample_iregs(union perf_event *event __maybe_unused, - struct perf_sample *sample, - struct thread *thread __maybe_unused, +static void print_sample_iregs(struct perf_sample *sample, struct perf_event_attr *attr) { struct regs_dump *regs = &sample->intr_regs; @@ -476,10 +474,7 @@ mispred_str(struct branch_entry *br) return br->flags.predicted ? 'P' : 'M'; } -static void print_sample_brstack(union perf_event *event __maybe_unused, - struct perf_sample *sample, - struct thread *thread __maybe_unused, - struct perf_event_attr *attr __maybe_unused) +static void print_sample_brstack(struct perf_sample *sample) { struct branch_stack *br = sample->branch_stack; u64 i; @@ -498,10 +493,8 @@ static void print_sample_brstack(union perf_event *event __maybe_unused, } } -static void print_sample_brstacksym(union perf_event *event __maybe_unused, - struct perf_sample *sample, - struct thread *thread __maybe_unused, - struct perf_event_attr *attr __maybe_unused) +static void print_sample_brstacksym(struct perf_sample *sample, + struct thread *thread) { struct branch_stack *br = sample->branch_stack; struct addr_location alf, alt; @@ -537,8 +530,7 @@ static void print_sample_brstacksym(union perf_event *event __maybe_unused, } -static void print_sample_addr(union perf_event *event __maybe_unused, - struct perf_sample *sample, +static void print_sample_addr(struct perf_sample *sample, struct thread *thread, struct perf_event_attr *attr) { @@ -566,8 +558,7 @@ static void print_sample_addr(union perf_event *event __maybe_unused, } } -static void print_sample_bts(union perf_event *event, - struct perf_sample *sample, +static void print_sample_bts(struct perf_sample *sample, struct perf_evsel *evsel, struct thread *thread, struct addr_location *al) @@ -597,7 +588,7 @@ static void print_sample_bts(union perf_event *event, ((evsel->attr.sample_type & PERF_SAMPLE_ADDR) && !output[attr->type].user_set)) { printf(" => "); - print_sample_addr(event, sample, thread, attr); + print_sample_addr(sample, thread, attr); } if (print_srcline_last) @@ -746,7 +737,7 @@ static size_t data_src__printf(u64 data_src) return printf("%-*s", maxlen, out); } -static void process_event(struct perf_script *script, union perf_event *event, +static void process_event(struct perf_script *script, struct perf_sample *sample, struct perf_evsel *evsel, struct addr_location *al) { @@ -775,7 +766,7 @@ static void process_event(struct perf_script *script, union perf_event *event, print_sample_flags(sample->flags); if (is_bts_event(attr)) { - print_sample_bts(event, sample, evsel, thread, al); + print_sample_bts(sample, evsel, thread, al); return; } @@ -783,7 +774,7 @@ static void process_event(struct perf_script *script, union perf_event *event, event_format__print(evsel->tp_format, sample->cpu, sample->raw_data, sample->raw_size); if (PRINT_FIELD(ADDR)) - print_sample_addr(event, sample, thread, attr); + print_sample_addr(sample, thread, attr); if (PRINT_FIELD(DATA_SRC)) data_src__printf(sample->data_src); @@ -803,12 +794,12 @@ static void process_event(struct perf_script *script, union perf_event *event, } if (PRINT_FIELD(IREGS)) - print_sample_iregs(event, sample, thread, attr); + print_sample_iregs(sample, attr); if (PRINT_FIELD(BRSTACK)) - print_sample_brstack(event, sample, thread, attr); + print_sample_brstack(sample); else if (PRINT_FIELD(BRSTACKSYM)) - print_sample_brstacksym(event, sample, thread, attr); + print_sample_brstacksym(sample, thread); if (perf_evsel__is_bpf_output(evsel) && PRINT_FIELD(BPF_OUTPUT)) print_sample_bpf_output(sample); @@ -919,7 +910,7 @@ static int process_sample_event(struct perf_tool *tool, if (scripting_ops) scripting_ops->process_event(event, sample, evsel, &al); else - process_event(scr, event, sample, evsel, &al); + process_event(scr, sample, evsel, &al); out_put: addr_location__put(&al); From 236f71eb94eb3dc5161bcd9310805ae6bd444ce0 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 23 Mar 2016 12:28:59 -0300 Subject: [PATCH 33/44] perf tools: Remove unused DIE_IF macro Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-elxg25jd4dhwod4wqbko87qh@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/util.h | 7 ------- 1 file changed, 7 deletions(-) diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h index d0d50cef8b2a..1b06216d31df 100644 --- a/tools/perf/util/util.h +++ b/tools/perf/util/util.h @@ -140,13 +140,6 @@ extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2))) #include "../../../include/linux/stringify.h" -#define DIE_IF(cnd) \ - do { if (cnd) \ - die(" at (" __FILE__ ":" __stringify(__LINE__) "): " \ - __stringify(cnd) "\n"); \ - } while (0) - - extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN); extern void set_warning_routine(void (*routine)(const char *err, va_list params)); From e476343860f8a4249106c4cae3d9a71fa1611fab Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 23 Mar 2016 12:32:31 -0300 Subject: [PATCH 34/44] perf tools: Simplify die() mechanism This should die altogether, but for now lets remove a bit of this stuff, as it is not used at all. Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-ade3n99xscldhg5mx2vzd8p3@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/usage.c | 8 +------- tools/perf/util/util.h | 1 - 2 files changed, 1 insertion(+), 8 deletions(-) diff --git a/tools/perf/util/usage.c b/tools/perf/util/usage.c index 6adfa18cdd4e..996046a66fe5 100644 --- a/tools/perf/util/usage.c +++ b/tools/perf/util/usage.c @@ -41,15 +41,9 @@ static void warn_builtin(const char *warn, va_list params) /* If we are in a dlopen()ed .so write to a global variable would segfault * (ugh), so keep things static. */ static void (*usage_routine)(const char *err) NORETURN = usage_builtin; -static void (*die_routine)(const char *err, va_list params) NORETURN = die_builtin; static void (*error_routine)(const char *err, va_list params) = error_builtin; static void (*warn_routine)(const char *err, va_list params) = warn_builtin; -void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN) -{ - die_routine = routine; -} - void set_warning_routine(void (*routine)(const char *err, va_list params)) { warn_routine = routine; @@ -65,7 +59,7 @@ void die(const char *err, ...) va_list params; va_start(params, err); - die_routine(err, params); + die_builtin(err, params); va_end(params); } diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h index 1b06216d31df..2080142d7244 100644 --- a/tools/perf/util/util.h +++ b/tools/perf/util/util.h @@ -140,7 +140,6 @@ extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2))) #include "../../../include/linux/stringify.h" -extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN); extern void set_warning_routine(void (*routine)(const char *err, va_list params)); extern int prefixcmp(const char *str, const char *prefix); From 3938bad44ed2fea41328e4be2ae04a8e94540813 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 23 Mar 2016 15:06:35 -0300 Subject: [PATCH 35/44] perf tools: Remove needless 'extern' from function prototypes Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-w246stf7ponfamclsai6b9zo@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/bench/bench.h | 22 +++++---- tools/perf/bench/mem-memcpy-arch.h | 2 +- tools/perf/bench/mem-memset-arch.h | 2 +- tools/perf/builtin.h | 64 +++++++++++++------------- tools/perf/util/cache.h | 22 ++++----- tools/perf/util/callchain.h | 4 +- tools/perf/util/cgroup.h | 4 +- tools/perf/util/cloexec.h | 2 +- tools/perf/util/dwarf-aux.h | 72 +++++++++++++++--------------- tools/perf/util/genelf.h | 8 ++-- tools/perf/util/jit.h | 10 ++--- tools/perf/util/llvm-utils.h | 7 ++- tools/perf/util/parse-events.h | 21 +++++---- tools/perf/util/probe-event.h | 53 ++++++++++------------ tools/perf/util/probe-finder.h | 24 +++++----- tools/perf/util/quote.h | 2 +- tools/perf/util/strbuf.h | 16 +++---- tools/perf/util/svghelper.h | 43 +++++++++--------- tools/perf/util/symbol.h | 4 +- tools/perf/util/util.h | 18 ++++---- 20 files changed, 190 insertions(+), 210 deletions(-) diff --git a/tools/perf/bench/bench.h b/tools/perf/bench/bench.h index 7e7e43207bbd..579a592990dd 100644 --- a/tools/perf/bench/bench.h +++ b/tools/perf/bench/bench.h @@ -25,19 +25,17 @@ # endif #endif -extern int bench_numa(int argc, const char **argv, const char *prefix); -extern int bench_sched_messaging(int argc, const char **argv, const char *prefix); -extern int bench_sched_pipe(int argc, const char **argv, const char *prefix); -extern int bench_mem_memcpy(int argc, const char **argv, - const char *prefix); -extern int bench_mem_memset(int argc, const char **argv, const char *prefix); -extern int bench_futex_hash(int argc, const char **argv, const char *prefix); -extern int bench_futex_wake(int argc, const char **argv, const char *prefix); -extern int bench_futex_wake_parallel(int argc, const char **argv, - const char *prefix); -extern int bench_futex_requeue(int argc, const char **argv, const char *prefix); +int bench_numa(int argc, const char **argv, const char *prefix); +int bench_sched_messaging(int argc, const char **argv, const char *prefix); +int bench_sched_pipe(int argc, const char **argv, const char *prefix); +int bench_mem_memcpy(int argc, const char **argv, const char *prefix); +int bench_mem_memset(int argc, const char **argv, const char *prefix); +int bench_futex_hash(int argc, const char **argv, const char *prefix); +int bench_futex_wake(int argc, const char **argv, const char *prefix); +int bench_futex_wake_parallel(int argc, const char **argv, const char *prefix); +int bench_futex_requeue(int argc, const char **argv, const char *prefix); /* pi futexes */ -extern int bench_futex_lock_pi(int argc, const char **argv, const char *prefix); +int bench_futex_lock_pi(int argc, const char **argv, const char *prefix); #define BENCH_FORMAT_DEFAULT_STR "default" #define BENCH_FORMAT_DEFAULT 0 diff --git a/tools/perf/bench/mem-memcpy-arch.h b/tools/perf/bench/mem-memcpy-arch.h index 57b4ed871459..5aad2a9408b0 100644 --- a/tools/perf/bench/mem-memcpy-arch.h +++ b/tools/perf/bench/mem-memcpy-arch.h @@ -2,7 +2,7 @@ #ifdef HAVE_ARCH_X86_64_SUPPORT #define MEMCPY_FN(fn, name, desc) \ - extern void *fn(void *, const void *, size_t); + void *fn(void *, const void *, size_t); #include "mem-memcpy-x86-64-asm-def.h" diff --git a/tools/perf/bench/mem-memset-arch.h b/tools/perf/bench/mem-memset-arch.h index 633800cb0dcb..0d15786d9ae3 100644 --- a/tools/perf/bench/mem-memset-arch.h +++ b/tools/perf/bench/mem-memset-arch.h @@ -2,7 +2,7 @@ #ifdef HAVE_ARCH_X86_64_SUPPORT #define MEMSET_FN(fn, name, desc) \ - extern void *fn(void *, int, size_t); + void *fn(void *, int, size_t); #include "mem-memset-x86-64-asm-def.h" diff --git a/tools/perf/builtin.h b/tools/perf/builtin.h index 3f871b54e261..41c24010ab43 100644 --- a/tools/perf/builtin.h +++ b/tools/perf/builtin.h @@ -7,38 +7,38 @@ extern const char perf_usage_string[]; extern const char perf_more_info_string[]; -extern void list_common_cmds_help(void); -extern const char *help_unknown_cmd(const char *cmd); -extern void prune_packed_objects(int); -extern int read_line_with_nul(char *buf, int size, FILE *file); -extern int check_pager_config(const char *cmd); +void list_common_cmds_help(void); +const char *help_unknown_cmd(const char *cmd); +void prune_packed_objects(int); +int read_line_with_nul(char *buf, int size, FILE *file); +int check_pager_config(const char *cmd); -extern int cmd_annotate(int argc, const char **argv, const char *prefix); -extern int cmd_bench(int argc, const char **argv, const char *prefix); -extern int cmd_buildid_cache(int argc, const char **argv, const char *prefix); -extern int cmd_buildid_list(int argc, const char **argv, const char *prefix); -extern int cmd_config(int argc, const char **argv, const char *prefix); -extern int cmd_diff(int argc, const char **argv, const char *prefix); -extern int cmd_evlist(int argc, const char **argv, const char *prefix); -extern int cmd_help(int argc, const char **argv, const char *prefix); -extern int cmd_sched(int argc, const char **argv, const char *prefix); -extern int cmd_list(int argc, const char **argv, const char *prefix); -extern int cmd_record(int argc, const char **argv, const char *prefix); -extern int cmd_report(int argc, const char **argv, const char *prefix); -extern int cmd_stat(int argc, const char **argv, const char *prefix); -extern int cmd_timechart(int argc, const char **argv, const char *prefix); -extern int cmd_top(int argc, const char **argv, const char *prefix); -extern int cmd_script(int argc, const char **argv, const char *prefix); -extern int cmd_version(int argc, const char **argv, const char *prefix); -extern int cmd_probe(int argc, const char **argv, const char *prefix); -extern int cmd_kmem(int argc, const char **argv, const char *prefix); -extern int cmd_lock(int argc, const char **argv, const char *prefix); -extern int cmd_kvm(int argc, const char **argv, const char *prefix); -extern int cmd_test(int argc, const char **argv, const char *prefix); -extern int cmd_trace(int argc, const char **argv, const char *prefix); -extern int cmd_inject(int argc, const char **argv, const char *prefix); -extern int cmd_mem(int argc, const char **argv, const char *prefix); -extern int cmd_data(int argc, const char **argv, const char *prefix); +int cmd_annotate(int argc, const char **argv, const char *prefix); +int cmd_bench(int argc, const char **argv, const char *prefix); +int cmd_buildid_cache(int argc, const char **argv, const char *prefix); +int cmd_buildid_list(int argc, const char **argv, const char *prefix); +int cmd_config(int argc, const char **argv, const char *prefix); +int cmd_diff(int argc, const char **argv, const char *prefix); +int cmd_evlist(int argc, const char **argv, const char *prefix); +int cmd_help(int argc, const char **argv, const char *prefix); +int cmd_sched(int argc, const char **argv, const char *prefix); +int cmd_list(int argc, const char **argv, const char *prefix); +int cmd_record(int argc, const char **argv, const char *prefix); +int cmd_report(int argc, const char **argv, const char *prefix); +int cmd_stat(int argc, const char **argv, const char *prefix); +int cmd_timechart(int argc, const char **argv, const char *prefix); +int cmd_top(int argc, const char **argv, const char *prefix); +int cmd_script(int argc, const char **argv, const char *prefix); +int cmd_version(int argc, const char **argv, const char *prefix); +int cmd_probe(int argc, const char **argv, const char *prefix); +int cmd_kmem(int argc, const char **argv, const char *prefix); +int cmd_lock(int argc, const char **argv, const char *prefix); +int cmd_kvm(int argc, const char **argv, const char *prefix); +int cmd_test(int argc, const char **argv, const char *prefix); +int cmd_trace(int argc, const char **argv, const char *prefix); +int cmd_inject(int argc, const char **argv, const char *prefix); +int cmd_mem(int argc, const char **argv, const char *prefix); +int cmd_data(int argc, const char **argv, const char *prefix); -extern int find_scripts(char **scripts_array, char **scripts_path_array); +int find_scripts(char **scripts_array, char **scripts_path_array); #endif diff --git a/tools/perf/util/cache.h b/tools/perf/util/cache.h index 3ca453f0c51f..17be38540404 100644 --- a/tools/perf/util/cache.h +++ b/tools/perf/util/cache.h @@ -26,14 +26,14 @@ extern const char *config_exclusive_filename; typedef int (*config_fn_t)(const char *, const char *, void *); -extern int perf_default_config(const char *, const char *, void *); -extern int perf_config(config_fn_t fn, void *); -extern int perf_config_int(const char *, const char *); -extern u64 perf_config_u64(const char *, const char *); -extern int perf_config_bool(const char *, const char *); -extern int config_error_nonbool(const char *); -extern const char *perf_config_dirname(const char *, const char *); -extern const char *perf_etc_perfconfig(void); +int perf_default_config(const char *, const char *, void *); +int perf_config(config_fn_t fn, void *); +int perf_config_int(const char *, const char *); +u64 perf_config_u64(const char *, const char *); +int perf_config_bool(const char *, const char *); +int config_error_nonbool(const char *); +const char *perf_config_dirname(const char *, const char *); +const char *perf_etc_perfconfig(void); char *alias_lookup(const char *alias); int split_cmdline(char *cmdline, const char ***argv); @@ -67,10 +67,10 @@ static inline int is_absolute_path(const char *path) const char *make_nonrelative_path(const char *path); char *strip_path_suffix(const char *path, const char *suffix); -extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2))); -extern char *perf_path(const char *fmt, ...) __attribute__((format (printf, 1, 2))); +char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2))); +char *perf_path(const char *fmt, ...) __attribute__((format (printf, 1, 2))); -extern char *perf_pathdup(const char *fmt, ...) +char *perf_pathdup(const char *fmt, ...) __attribute__((format (printf, 1, 2))); #endif /* __PERF_CACHE_H */ diff --git a/tools/perf/util/callchain.h b/tools/perf/util/callchain.h index 18dd22269764..d2a9e694810c 100644 --- a/tools/perf/util/callchain.h +++ b/tools/perf/util/callchain.h @@ -220,7 +220,7 @@ int fill_callchain_info(struct addr_location *al, struct callchain_cursor_node * bool hide_unresolved); extern const char record_callchain_help[]; -extern int parse_callchain_record(const char *arg, struct callchain_param *param); +int parse_callchain_record(const char *arg, struct callchain_param *param); int parse_callchain_record_opt(const char *arg, struct callchain_param *param); int parse_callchain_report_opt(const char *arg); int parse_callchain_top_opt(const char *arg); @@ -236,7 +236,7 @@ static inline void callchain_cursor_snapshot(struct callchain_cursor *dest, } #ifdef HAVE_SKIP_CALLCHAIN_IDX -extern int arch_skip_callchain_idx(struct thread *thread, struct ip_callchain *chain); +int arch_skip_callchain_idx(struct thread *thread, struct ip_callchain *chain); #else static inline int arch_skip_callchain_idx(struct thread *thread __maybe_unused, struct ip_callchain *chain __maybe_unused) diff --git a/tools/perf/util/cgroup.h b/tools/perf/util/cgroup.h index b4b8cb42fe5e..31f8dcdbd7ef 100644 --- a/tools/perf/util/cgroup.h +++ b/tools/perf/util/cgroup.h @@ -13,7 +13,7 @@ struct cgroup_sel { extern int nr_cgroups; /* number of explicit cgroups defined */ -extern void close_cgroup(struct cgroup_sel *cgrp); -extern int parse_cgroups(const struct option *opt, const char *str, int unset); +void close_cgroup(struct cgroup_sel *cgrp); +int parse_cgroups(const struct option *opt, const char *str, int unset); #endif /* __CGROUP_H__ */ diff --git a/tools/perf/util/cloexec.h b/tools/perf/util/cloexec.h index 3bee6773ddb0..d0d465953d36 100644 --- a/tools/perf/util/cloexec.h +++ b/tools/perf/util/cloexec.h @@ -5,7 +5,7 @@ unsigned long perf_event_open_cloexec_flag(void); #ifdef __GLIBC_PREREQ #if !__GLIBC_PREREQ(2, 6) && !defined(__UCLIBC__) -extern int sched_getcpu(void) __THROW; +int sched_getcpu(void) __THROW; #endif #endif diff --git a/tools/perf/util/dwarf-aux.h b/tools/perf/util/dwarf-aux.h index c42ec366f2a7..dc0ce1adb075 100644 --- a/tools/perf/util/dwarf-aux.h +++ b/tools/perf/util/dwarf-aux.h @@ -25,48 +25,48 @@ #include /* Find the realpath of the target file */ -extern const char *cu_find_realpath(Dwarf_Die *cu_die, const char *fname); +const char *cu_find_realpath(Dwarf_Die *cu_die, const char *fname); /* Get DW_AT_comp_dir (should be NULL with older gcc) */ -extern const char *cu_get_comp_dir(Dwarf_Die *cu_die); +const char *cu_get_comp_dir(Dwarf_Die *cu_die); /* Get a line number and file name for given address */ -extern int cu_find_lineinfo(Dwarf_Die *cudie, unsigned long addr, - const char **fname, int *lineno); +int cu_find_lineinfo(Dwarf_Die *cudie, unsigned long addr, + const char **fname, int *lineno); /* Walk on funcitons at given address */ -extern int cu_walk_functions_at(Dwarf_Die *cu_die, Dwarf_Addr addr, - int (*callback)(Dwarf_Die *, void *), void *data); +int cu_walk_functions_at(Dwarf_Die *cu_die, Dwarf_Addr addr, + int (*callback)(Dwarf_Die *, void *), void *data); /* Ensure that this DIE is a subprogram and definition (not declaration) */ -extern bool die_is_func_def(Dwarf_Die *dw_die); +bool die_is_func_def(Dwarf_Die *dw_die); /* Ensure that this DIE is an instance of a subprogram */ -extern bool die_is_func_instance(Dwarf_Die *dw_die); +bool die_is_func_instance(Dwarf_Die *dw_die); /* Compare diename and tname */ -extern bool die_compare_name(Dwarf_Die *dw_die, const char *tname); +bool die_compare_name(Dwarf_Die *dw_die, const char *tname); /* Matching diename with glob pattern */ -extern bool die_match_name(Dwarf_Die *dw_die, const char *glob); +bool die_match_name(Dwarf_Die *dw_die, const char *glob); /* Get callsite line number of inline-function instance */ -extern int die_get_call_lineno(Dwarf_Die *in_die); +int die_get_call_lineno(Dwarf_Die *in_die); /* Get callsite file name of inlined function instance */ -extern const char *die_get_call_file(Dwarf_Die *in_die); +const char *die_get_call_file(Dwarf_Die *in_die); /* Get type die */ -extern Dwarf_Die *die_get_type(Dwarf_Die *vr_die, Dwarf_Die *die_mem); +Dwarf_Die *die_get_type(Dwarf_Die *vr_die, Dwarf_Die *die_mem); /* Get a type die, but skip qualifiers and typedef */ -extern Dwarf_Die *die_get_real_type(Dwarf_Die *vr_die, Dwarf_Die *die_mem); +Dwarf_Die *die_get_real_type(Dwarf_Die *vr_die, Dwarf_Die *die_mem); /* Check whether the DIE is signed or not */ -extern bool die_is_signed_type(Dwarf_Die *tp_die); +bool die_is_signed_type(Dwarf_Die *tp_die); /* Get data_member_location offset */ -extern int die_get_data_member_location(Dwarf_Die *mb_die, Dwarf_Word *offs); +int die_get_data_member_location(Dwarf_Die *mb_die, Dwarf_Word *offs); /* Return values for die_find_child() callbacks */ enum { @@ -77,29 +77,29 @@ enum { }; /* Search child DIEs */ -extern Dwarf_Die *die_find_child(Dwarf_Die *rt_die, - int (*callback)(Dwarf_Die *, void *), - void *data, Dwarf_Die *die_mem); +Dwarf_Die *die_find_child(Dwarf_Die *rt_die, + int (*callback)(Dwarf_Die *, void *), + void *data, Dwarf_Die *die_mem); /* Search a non-inlined function including given address */ -extern Dwarf_Die *die_find_realfunc(Dwarf_Die *cu_die, Dwarf_Addr addr, - Dwarf_Die *die_mem); +Dwarf_Die *die_find_realfunc(Dwarf_Die *cu_die, Dwarf_Addr addr, + Dwarf_Die *die_mem); /* Search a non-inlined function with tail call at given address */ Dwarf_Die *die_find_tailfunc(Dwarf_Die *cu_die, Dwarf_Addr addr, Dwarf_Die *die_mem); /* Search the top inlined function including given address */ -extern Dwarf_Die *die_find_top_inlinefunc(Dwarf_Die *sp_die, Dwarf_Addr addr, - Dwarf_Die *die_mem); +Dwarf_Die *die_find_top_inlinefunc(Dwarf_Die *sp_die, Dwarf_Addr addr, + Dwarf_Die *die_mem); /* Search the deepest inlined function including given address */ -extern Dwarf_Die *die_find_inlinefunc(Dwarf_Die *sp_die, Dwarf_Addr addr, - Dwarf_Die *die_mem); +Dwarf_Die *die_find_inlinefunc(Dwarf_Die *sp_die, Dwarf_Addr addr, + Dwarf_Die *die_mem); /* Walk on the instances of given DIE */ -extern int die_walk_instances(Dwarf_Die *in_die, - int (*callback)(Dwarf_Die *, void *), void *data); +int die_walk_instances(Dwarf_Die *in_die, + int (*callback)(Dwarf_Die *, void *), void *data); /* Walker on lines (Note: line number will not be sorted) */ typedef int (* line_walk_callback_t) (const char *fname, int lineno, @@ -109,22 +109,20 @@ typedef int (* line_walk_callback_t) (const char *fname, int lineno, * Walk on lines inside given DIE. If the DIE is a subprogram, walk only on * the lines inside the subprogram, otherwise the DIE must be a CU DIE. */ -extern int die_walk_lines(Dwarf_Die *rt_die, line_walk_callback_t callback, - void *data); +int die_walk_lines(Dwarf_Die *rt_die, line_walk_callback_t callback, void *data); /* Find a variable called 'name' at given address */ -extern Dwarf_Die *die_find_variable_at(Dwarf_Die *sp_die, const char *name, - Dwarf_Addr addr, Dwarf_Die *die_mem); +Dwarf_Die *die_find_variable_at(Dwarf_Die *sp_die, const char *name, + Dwarf_Addr addr, Dwarf_Die *die_mem); /* Find a member called 'name' */ -extern Dwarf_Die *die_find_member(Dwarf_Die *st_die, const char *name, - Dwarf_Die *die_mem); +Dwarf_Die *die_find_member(Dwarf_Die *st_die, const char *name, + Dwarf_Die *die_mem); /* Get the name of given variable DIE */ -extern int die_get_typename(Dwarf_Die *vr_die, struct strbuf *buf); +int die_get_typename(Dwarf_Die *vr_die, struct strbuf *buf); /* Get the name and type of given variable DIE, stored as "type\tname" */ -extern int die_get_varname(Dwarf_Die *vr_die, struct strbuf *buf); -extern int die_get_var_range(Dwarf_Die *sp_die, Dwarf_Die *vr_die, - struct strbuf *buf); +int die_get_varname(Dwarf_Die *vr_die, struct strbuf *buf); +int die_get_var_range(Dwarf_Die *sp_die, Dwarf_Die *vr_die, struct strbuf *buf); #endif diff --git a/tools/perf/util/genelf.h b/tools/perf/util/genelf.h index 45bf9c6d3257..cd67e64a0494 100644 --- a/tools/perf/util/genelf.h +++ b/tools/perf/util/genelf.h @@ -2,12 +2,10 @@ #define __GENELF_H__ /* genelf.c */ -extern int jit_write_elf(int fd, uint64_t code_addr, const char *sym, - const void *code, int csize, - void *debug, int nr_debug_entries); +int jit_write_elf(int fd, uint64_t code_addr, const char *sym, + const void *code, int csize, void *debug, int nr_debug_entries); /* genelf_debug.c */ -extern int jit_add_debug_info(Elf *e, uint64_t code_addr, - void *debug, int nr_debug_entries); +int jit_add_debug_info(Elf *e, uint64_t code_addr, void *debug, int nr_debug_entries); #if defined(__arm__) #define GEN_ELF_ARCH EM_ARM diff --git a/tools/perf/util/jit.h b/tools/perf/util/jit.h index a1e99da0715a..3f42ee4d2a0b 100644 --- a/tools/perf/util/jit.h +++ b/tools/perf/util/jit.h @@ -3,13 +3,9 @@ #include -extern int jit_process(struct perf_session *session, - struct perf_data_file *output, - struct machine *machine, - char *filename, - pid_t pid, - u64 *nbytes); +int jit_process(struct perf_session *session, struct perf_data_file *output, + struct machine *machine, char *filename, pid_t pid, u64 *nbytes); -extern int jit_inject_record(const char *filename); +int jit_inject_record(const char *filename); #endif /* __JIT_H__ */ diff --git a/tools/perf/util/llvm-utils.h b/tools/perf/util/llvm-utils.h index 5b3cf1c229e2..23b9a743fe72 100644 --- a/tools/perf/util/llvm-utils.h +++ b/tools/perf/util/llvm-utils.h @@ -39,11 +39,10 @@ struct llvm_param { }; extern struct llvm_param llvm_param; -extern int perf_llvm_config(const char *var, const char *value); +int perf_llvm_config(const char *var, const char *value); -extern int llvm__compile_bpf(const char *path, void **p_obj_buf, - size_t *p_obj_buf_sz); +int llvm__compile_bpf(const char *path, void **p_obj_buf, size_t *p_obj_buf_sz); /* This function is for test__llvm() use only */ -extern int llvm__search_clang(void); +int llvm__search_clang(void); #endif diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h index 67e493088e81..d740c3ca9a1d 100644 --- a/tools/perf/util/parse-events.h +++ b/tools/perf/util/parse-events.h @@ -22,19 +22,18 @@ struct tracepoint_path { struct tracepoint_path *next; }; -extern struct tracepoint_path *tracepoint_id_to_path(u64 config); -extern struct tracepoint_path *tracepoint_name_to_path(const char *name); -extern bool have_tracepoints(struct list_head *evlist); +struct tracepoint_path *tracepoint_id_to_path(u64 config); +struct tracepoint_path *tracepoint_name_to_path(const char *name); +bool have_tracepoints(struct list_head *evlist); const char *event_type(int type); -extern int parse_events_option(const struct option *opt, const char *str, - int unset); -extern int parse_events(struct perf_evlist *evlist, const char *str, - struct parse_events_error *error); -extern int parse_events_terms(struct list_head *terms, const char *str); -extern int parse_filter(const struct option *opt, const char *str, int unset); -extern int exclude_perf(const struct option *opt, const char *arg, int unset); +int parse_events_option(const struct option *opt, const char *str, int unset); +int parse_events(struct perf_evlist *evlist, const char *str, + struct parse_events_error *error); +int parse_events_terms(struct list_head *terms, const char *str); +int parse_filter(const struct option *opt, const char *str, int unset); +int exclude_perf(const struct option *opt, const char *arg, int unset); #define EVENTS_HELP_MAX (128*1024) @@ -183,7 +182,7 @@ void print_symbol_events(const char *event_glob, unsigned type, void print_tracepoint_events(const char *subsys_glob, const char *event_glob, bool name_only); int print_hwcache_events(const char *event_glob, bool name_only); -extern int is_valid_tracepoint(const char *event_string); +int is_valid_tracepoint(const char *event_string); int valid_event_mount(const char *eventfs); char *parse_events_formats_error_string(char *additional_terms); diff --git a/tools/perf/util/probe-event.h b/tools/perf/util/probe-event.h index ba926c30f8cd..e54e7b011577 100644 --- a/tools/perf/util/probe-event.h +++ b/tools/perf/util/probe-event.h @@ -114,49 +114,44 @@ int init_probe_symbol_maps(bool user_only); void exit_probe_symbol_maps(void); /* Command string to events */ -extern int parse_perf_probe_command(const char *cmd, - struct perf_probe_event *pev); -extern int parse_probe_trace_command(const char *cmd, - struct probe_trace_event *tev); +int parse_perf_probe_command(const char *cmd, struct perf_probe_event *pev); +int parse_probe_trace_command(const char *cmd, struct probe_trace_event *tev); /* Events to command string */ -extern char *synthesize_perf_probe_command(struct perf_probe_event *pev); -extern char *synthesize_probe_trace_command(struct probe_trace_event *tev); -extern int synthesize_perf_probe_arg(struct perf_probe_arg *pa, char *buf, - size_t len); +char *synthesize_perf_probe_command(struct perf_probe_event *pev); +char *synthesize_probe_trace_command(struct probe_trace_event *tev); +int synthesize_perf_probe_arg(struct perf_probe_arg *pa, char *buf, size_t len); /* Check the perf_probe_event needs debuginfo */ -extern bool perf_probe_event_need_dwarf(struct perf_probe_event *pev); +bool perf_probe_event_need_dwarf(struct perf_probe_event *pev); /* Release event contents */ -extern void clear_perf_probe_event(struct perf_probe_event *pev); -extern void clear_probe_trace_event(struct probe_trace_event *tev); +void clear_perf_probe_event(struct perf_probe_event *pev); +void clear_probe_trace_event(struct probe_trace_event *tev); /* Command string to line-range */ -extern int parse_line_range_desc(const char *cmd, struct line_range *lr); +int parse_line_range_desc(const char *cmd, struct line_range *lr); /* Release line range members */ -extern void line_range__clear(struct line_range *lr); +void line_range__clear(struct line_range *lr); /* Initialize line range */ -extern int line_range__init(struct line_range *lr); +int line_range__init(struct line_range *lr); -extern int add_perf_probe_events(struct perf_probe_event *pevs, int npevs); -extern int convert_perf_probe_events(struct perf_probe_event *pevs, int npevs); -extern int apply_perf_probe_events(struct perf_probe_event *pevs, int npevs); -extern void cleanup_perf_probe_events(struct perf_probe_event *pevs, int npevs); -extern int del_perf_probe_events(struct strfilter *filter); +int add_perf_probe_events(struct perf_probe_event *pevs, int npevs); +int convert_perf_probe_events(struct perf_probe_event *pevs, int npevs); +int apply_perf_probe_events(struct perf_probe_event *pevs, int npevs); +void cleanup_perf_probe_events(struct perf_probe_event *pevs, int npevs); +int del_perf_probe_events(struct strfilter *filter); -extern int show_perf_probe_event(const char *group, const char *event, - struct perf_probe_event *pev, - const char *module, bool use_stdout); -extern int show_perf_probe_events(struct strfilter *filter); -extern int show_line_range(struct line_range *lr, const char *module, - bool user); -extern int show_available_vars(struct perf_probe_event *pevs, int npevs, - struct strfilter *filter); -extern int show_available_funcs(const char *module, struct strfilter *filter, - bool user); +int show_perf_probe_event(const char *group, const char *event, + struct perf_probe_event *pev, + const char *module, bool use_stdout); +int show_perf_probe_events(struct strfilter *filter); +int show_line_range(struct line_range *lr, const char *module, bool user); +int show_available_vars(struct perf_probe_event *pevs, int npevs, + struct strfilter *filter); +int show_available_funcs(const char *module, struct strfilter *filter, bool user); bool arch__prefers_symtab(void); void arch__fix_tev_from_maps(struct perf_probe_event *pev, struct probe_trace_event *tev, struct map *map); diff --git a/tools/perf/util/probe-finder.h b/tools/perf/util/probe-finder.h index 0aec7704e395..51137fccb9c8 100644 --- a/tools/perf/util/probe-finder.h +++ b/tools/perf/util/probe-finder.h @@ -34,27 +34,25 @@ struct debuginfo { }; /* This also tries to open distro debuginfo */ -extern struct debuginfo *debuginfo__new(const char *path); -extern void debuginfo__delete(struct debuginfo *dbg); +struct debuginfo *debuginfo__new(const char *path); +void debuginfo__delete(struct debuginfo *dbg); /* Find probe_trace_events specified by perf_probe_event from debuginfo */ -extern int debuginfo__find_trace_events(struct debuginfo *dbg, - struct perf_probe_event *pev, - struct probe_trace_event **tevs); +int debuginfo__find_trace_events(struct debuginfo *dbg, + struct perf_probe_event *pev, + struct probe_trace_event **tevs); /* Find a perf_probe_point from debuginfo */ -extern int debuginfo__find_probe_point(struct debuginfo *dbg, - unsigned long addr, - struct perf_probe_point *ppt); +int debuginfo__find_probe_point(struct debuginfo *dbg, unsigned long addr, + struct perf_probe_point *ppt); /* Find a line range */ -extern int debuginfo__find_line_range(struct debuginfo *dbg, - struct line_range *lr); +int debuginfo__find_line_range(struct debuginfo *dbg, struct line_range *lr); /* Find available variables */ -extern int debuginfo__find_available_vars_at(struct debuginfo *dbg, - struct perf_probe_event *pev, - struct variable_list **vls); +int debuginfo__find_available_vars_at(struct debuginfo *dbg, + struct perf_probe_event *pev, + struct variable_list **vls); /* Find a src file from a DWARF tag path */ int get_real_path(const char *raw_path, const char *comp_dir, diff --git a/tools/perf/util/quote.h b/tools/perf/util/quote.h index 172889ea234f..3340c9c4a6ca 100644 --- a/tools/perf/util/quote.h +++ b/tools/perf/util/quote.h @@ -24,6 +24,6 @@ * sq_quote() in a real application. */ -extern void sq_quote_argv(struct strbuf *, const char **argv, size_t maxlen); +void sq_quote_argv(struct strbuf *, const char **argv, size_t maxlen); #endif /* __PERF_QUOTE_H */ diff --git a/tools/perf/util/strbuf.h b/tools/perf/util/strbuf.h index 7a32c838884d..b73cbaaf93bc 100644 --- a/tools/perf/util/strbuf.h +++ b/tools/perf/util/strbuf.h @@ -51,16 +51,16 @@ struct strbuf { #define STRBUF_INIT { 0, 0, strbuf_slopbuf } /*----- strbuf life cycle -----*/ -extern void strbuf_init(struct strbuf *buf, ssize_t hint); -extern void strbuf_release(struct strbuf *); -extern char *strbuf_detach(struct strbuf *, size_t *); +void strbuf_init(struct strbuf *buf, ssize_t hint); +void strbuf_release(struct strbuf *buf); +char *strbuf_detach(struct strbuf *buf, size_t *); /*----- strbuf size related -----*/ static inline ssize_t strbuf_avail(const struct strbuf *sb) { return sb->alloc ? sb->alloc - sb->len - 1 : 0; } -extern void strbuf_grow(struct strbuf *, size_t); +void strbuf_grow(struct strbuf *buf, size_t); static inline void strbuf_setlen(struct strbuf *sb, size_t len) { if (!sb->alloc) @@ -77,16 +77,16 @@ static inline void strbuf_addch(struct strbuf *sb, int c) { sb->buf[sb->len] = '\0'; } -extern void strbuf_add(struct strbuf *, const void *, size_t); +void strbuf_add(struct strbuf *buf, const void *, size_t); static inline void strbuf_addstr(struct strbuf *sb, const char *s) { strbuf_add(sb, s, strlen(s)); } __attribute__((format(printf,2,3))) -extern void strbuf_addf(struct strbuf *sb, const char *fmt, ...); -extern void strbuf_addv(struct strbuf *sb, const char *fmt, va_list ap); +void strbuf_addf(struct strbuf *sb, const char *fmt, ...); +void strbuf_addv(struct strbuf *sb, const char *fmt, va_list ap); /* XXX: if read fails, any partial read is undone */ -extern ssize_t strbuf_read(struct strbuf *, int fd, ssize_t hint); +ssize_t strbuf_read(struct strbuf *, int fd, ssize_t hint); #endif /* __PERF_STRBUF_H */ diff --git a/tools/perf/util/svghelper.h b/tools/perf/util/svghelper.h index 9292a5291445..946fdf2db97c 100644 --- a/tools/perf/util/svghelper.h +++ b/tools/perf/util/svghelper.h @@ -3,32 +3,31 @@ #include -extern void open_svg(const char *filename, int cpus, int rows, u64 start, u64 end); -extern void svg_ubox(int Yslot, u64 start, u64 end, double height, const char *type, int fd, int err, int merges); -extern void svg_lbox(int Yslot, u64 start, u64 end, double height, const char *type, int fd, int err, int merges); -extern void svg_fbox(int Yslot, u64 start, u64 end, double height, const char *type, int fd, int err, int merges); -extern void svg_box(int Yslot, u64 start, u64 end, const char *type); -extern void svg_blocked(int Yslot, int cpu, u64 start, u64 end, const char *backtrace); -extern void svg_running(int Yslot, int cpu, u64 start, u64 end, const char *backtrace); -extern void svg_waiting(int Yslot, int cpu, u64 start, u64 end, const char *backtrace); -extern void svg_cpu_box(int cpu, u64 max_frequency, u64 turbo_frequency); +void open_svg(const char *filename, int cpus, int rows, u64 start, u64 end); +void svg_ubox(int Yslot, u64 start, u64 end, double height, const char *type, int fd, int err, int merges); +void svg_lbox(int Yslot, u64 start, u64 end, double height, const char *type, int fd, int err, int merges); +void svg_fbox(int Yslot, u64 start, u64 end, double height, const char *type, int fd, int err, int merges); +void svg_box(int Yslot, u64 start, u64 end, const char *type); +void svg_blocked(int Yslot, int cpu, u64 start, u64 end, const char *backtrace); +void svg_running(int Yslot, int cpu, u64 start, u64 end, const char *backtrace); +void svg_waiting(int Yslot, int cpu, u64 start, u64 end, const char *backtrace); +void svg_cpu_box(int cpu, u64 max_frequency, u64 turbo_frequency); -extern void svg_process(int cpu, u64 start, u64 end, int pid, const char *name, const char *backtrace); -extern void svg_cstate(int cpu, u64 start, u64 end, int type); -extern void svg_pstate(int cpu, u64 start, u64 end, u64 freq); +void svg_process(int cpu, u64 start, u64 end, int pid, const char *name, const char *backtrace); +void svg_cstate(int cpu, u64 start, u64 end, int type); +void svg_pstate(int cpu, u64 start, u64 end, u64 freq); -extern void svg_time_grid(double min_thickness); -extern void svg_io_legenda(void); -extern void svg_legenda(void); -extern void svg_wakeline(u64 start, int row1, int row2, const char *backtrace); -extern void svg_partial_wakeline(u64 start, int row1, char *desc1, int row2, char *desc2, const char *backtrace); -extern void svg_interrupt(u64 start, int row, const char *backtrace); -extern void svg_text(int Yslot, u64 start, const char *text); -extern void svg_close(void); -extern int svg_build_topology_map(char *sib_core, int sib_core_nr, - char *sib_thr, int sib_thr_nr); +void svg_time_grid(double min_thickness); +void svg_io_legenda(void); +void svg_legenda(void); +void svg_wakeline(u64 start, int row1, int row2, const char *backtrace); +void svg_partial_wakeline(u64 start, int row1, char *desc1, int row2, char *desc2, const char *backtrace); +void svg_interrupt(u64 start, int row, const char *backtrace); +void svg_text(int Yslot, u64 start, const char *text); +void svg_close(void); +int svg_build_topology_map(char *sib_core, int sib_core_nr, char *sib_thr, int sib_thr_nr); extern int svg_page_width; extern u64 svg_highlight; diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h index a937053a0ae0..c8b7544d9267 100644 --- a/tools/perf/util/symbol.h +++ b/tools/perf/util/symbol.h @@ -34,8 +34,8 @@ #endif #ifdef HAVE_LIBELF_SUPPORT -extern Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep, - GElf_Shdr *shp, const char *name, size_t *idx); +Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep, + GElf_Shdr *shp, const char *name, size_t *idx); #endif #ifndef DMGL_PARAMS diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h index 2080142d7244..46d4dd013a8b 100644 --- a/tools/perf/util/util.h +++ b/tools/perf/util/util.h @@ -133,17 +133,17 @@ extern char buildid_dir[]; #define PERF_GTK_DSO "libperf-gtk.so" /* General helper functions */ -extern void usage(const char *err) NORETURN; -extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2))); -extern int error(const char *err, ...) __attribute__((format (printf, 1, 2))); -extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2))); +void usage(const char *err) NORETURN; +void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2))); +int error(const char *err, ...) __attribute__((format (printf, 1, 2))); +void warning(const char *err, ...) __attribute__((format (printf, 1, 2))); #include "../../../include/linux/stringify.h" -extern void set_warning_routine(void (*routine)(const char *err, va_list params)); +void set_warning_routine(void (*routine)(const char *err, va_list params)); -extern int prefixcmp(const char *str, const char *prefix); -extern void set_buildid_dir(const char *dir); +int prefixcmp(const char *str, const char *prefix); +void set_buildid_dir(const char *dir); #ifdef __GLIBC_PREREQ #if __GLIBC_PREREQ(2, 1) @@ -164,8 +164,8 @@ static inline char *gitstrchrnul(const char *s, int c) /* * Wrappers: */ -extern char *xstrdup(const char *str); -extern void *xrealloc(void *ptr, size_t size) __attribute__((weak)); +char *xstrdup(const char *str); +void *xrealloc(void *ptr, size_t size) __attribute__((weak)); static inline void *zalloc(size_t size) From 4f3c887688a2b0c01b241afcfedbb4e5e4a8e022 Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Wed, 23 Mar 2016 10:16:28 -0400 Subject: [PATCH 36/44] tools lib traceevent: Remove redundant CPU output Commit a6745330789f ("tools lib traceevent: Split pevent_print_event() into specific functionality functions") broke apart the function pevent_print_event() into three functions. The first function prints the comm, pid and CPU, the second prints the timestamp. But that commit added the printing of the CPU in the timestamp function, which now causes pevent_print_event() to duplicate the CPU output. Remove the redundant printing of the record's CPU from the timestamp function. Signed-off-by: Steven Rostedt Cc: Namhyung Kim Fixes: a6745330789f ("tools lib traceevent: Split pevent_print_event() into specific functionality functions") Link: http://lkml.kernel.org/r/20160323101628.459375d2@gandalf.local.home Signed-off-by: Arnaldo Carvalho de Melo --- tools/lib/traceevent/event-parse.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c index 190cc886ab91..a8b6357d1ffe 100644 --- a/tools/lib/traceevent/event-parse.c +++ b/tools/lib/traceevent/event-parse.c @@ -5427,10 +5427,8 @@ void pevent_print_event_time(struct pevent *pevent, struct trace_seq *s, } if (pevent->latency_format) { - trace_seq_printf(s, " %3d", record->cpu); pevent_data_lat_fmt(pevent, s, record); - } else - trace_seq_printf(s, " [%03d]", record->cpu); + } if (use_usec_format) { if (pevent->flags & PEVENT_NSEC_OUTPUT) { From 737ef7d32cb41d19f0e1fd4d9ad0916f42d2f448 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 23 Mar 2016 15:14:27 -0300 Subject: [PATCH 37/44] tools include: Copy linux/stringify.h from the kernel There is code in tools/ that is directly including this file from the kernel, and this is verboten for a while, copy it so that the next csets can fix this situation. Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-e0r3nks2uai020ndghvxv5qw@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/include/linux/stringify.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) create mode 100644 tools/include/linux/stringify.h diff --git a/tools/include/linux/stringify.h b/tools/include/linux/stringify.h new file mode 100644 index 000000000000..841cec8ed525 --- /dev/null +++ b/tools/include/linux/stringify.h @@ -0,0 +1,12 @@ +#ifndef __LINUX_STRINGIFY_H +#define __LINUX_STRINGIFY_H + +/* Indirect stringification. Doing two levels allows the parameter to be a + * macro itself. For example, compile with -DFOO=bar, __stringify(FOO) + * converts to "bar". + */ + +#define __stringify_1(x...) #x +#define __stringify(x...) __stringify_1(x) + +#endif /* !__LINUX_STRINGIFY_H */ From 531d2410635ce290bee215f4bf9ec8ca98cf7302 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 23 Mar 2016 15:16:55 -0300 Subject: [PATCH 38/44] perf tools: Do not include stringify.h from the kernel sources Use instead the copy just made to tools/include/linux/. Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-q736w12nwy98x5ox2hamp5ow@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/arch/powerpc/util/header.c | 4 +--- tools/perf/builtin-report.c | 1 + tools/perf/builtin-top.c | 1 + tools/perf/util/util.h | 2 -- 4 files changed, 3 insertions(+), 5 deletions(-) diff --git a/tools/perf/arch/powerpc/util/header.c b/tools/perf/arch/powerpc/util/header.c index 6c1b8a75db09..6138bdef6e63 100644 --- a/tools/perf/arch/powerpc/util/header.c +++ b/tools/perf/arch/powerpc/util/header.c @@ -3,9 +3,7 @@ #include #include #include - -#include "../../util/header.h" -#include "../../util/util.h" +#include #define mfspr(rn) ({unsigned long rval; \ asm volatile("mfspr %0," __stringify(rn) \ diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index ab47273a5373..160ea23b45aa 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -41,6 +41,7 @@ #include #include +#include struct report { struct perf_tool tool; diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 9b0f2df2faa0..833214979c4f 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -67,6 +67,7 @@ #include #include +#include #include static volatile int done; diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h index 46d4dd013a8b..835b8ceca041 100644 --- a/tools/perf/util/util.h +++ b/tools/perf/util/util.h @@ -138,8 +138,6 @@ void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2))); int error(const char *err, ...) __attribute__((format (printf, 1, 2))); void warning(const char *err, ...) __attribute__((format (printf, 1, 2))); -#include "../../../include/linux/stringify.h" - void set_warning_routine(void (*routine)(const char *err, va_list params)); int prefixcmp(const char *str, const char *prefix); From cf47a8aede9febee21cbd21d40a9c47244773a6c Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 23 Mar 2016 15:25:02 -0300 Subject: [PATCH 39/44] perf tools: Remove unused perf_pathdup, xstrdup functions Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-s87zi5d03m6rz622y1z6rlsa@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/cache.h | 3 --- tools/perf/util/path.c | 30 ------------------------------ tools/perf/util/util.h | 1 - tools/perf/util/wrapper.c | 12 ------------ 4 files changed, 46 deletions(-) diff --git a/tools/perf/util/cache.h b/tools/perf/util/cache.h index 17be38540404..da322bea56f7 100644 --- a/tools/perf/util/cache.h +++ b/tools/perf/util/cache.h @@ -70,7 +70,4 @@ char *strip_path_suffix(const char *path, const char *suffix); char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2))); char *perf_path(const char *fmt, ...) __attribute__((format (printf, 1, 2))); -char *perf_pathdup(const char *fmt, ...) - __attribute__((format (printf, 1, 2))); - #endif /* __PERF_CACHE_H */ diff --git a/tools/perf/util/path.c b/tools/perf/util/path.c index 3654d964e49d..3bf6bf82ff2d 100644 --- a/tools/perf/util/path.c +++ b/tools/perf/util/path.c @@ -41,36 +41,6 @@ static char *cleanup_path(char *path) return path; } -static char *perf_vsnpath(char *buf, size_t n, const char *fmt, va_list args) -{ - const char *perf_dir = get_perf_dir(); - size_t len; - - len = strlen(perf_dir); - if (n < len + 1) - goto bad; - memcpy(buf, perf_dir, len); - if (len && !is_dir_sep(perf_dir[len-1])) - buf[len++] = '/'; - len += vsnprintf(buf + len, n - len, fmt, args); - if (len >= n) - goto bad; - return cleanup_path(buf); -bad: - strlcpy(buf, bad_path, n); - return buf; -} - -char *perf_pathdup(const char *fmt, ...) -{ - char path[PATH_MAX]; - va_list args; - va_start(args, fmt); - (void)perf_vsnpath(path, sizeof(path), fmt, args); - va_end(args); - return xstrdup(path); -} - char *mkpath(const char *fmt, ...) { va_list args; diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h index 835b8ceca041..8298d607c738 100644 --- a/tools/perf/util/util.h +++ b/tools/perf/util/util.h @@ -162,7 +162,6 @@ static inline char *gitstrchrnul(const char *s, int c) /* * Wrappers: */ -char *xstrdup(const char *str); void *xrealloc(void *ptr, size_t size) __attribute__((weak)); diff --git a/tools/perf/util/wrapper.c b/tools/perf/util/wrapper.c index 19f15b650703..5f1a07c4b87b 100644 --- a/tools/perf/util/wrapper.c +++ b/tools/perf/util/wrapper.c @@ -12,18 +12,6 @@ static inline void release_pack_memory(size_t size __maybe_unused, { } -char *xstrdup(const char *str) -{ - char *ret = strdup(str); - if (!ret) { - release_pack_memory(strlen(str) + 1, -1); - ret = strdup(str); - if (!ret) - die("Out of memory, strdup failed"); - } - return ret; -} - void *xrealloc(void *ptr, size_t size) { void *ret = realloc(ptr, size); From a610f5cbb2a7e26b7f2df2f5df255e34007d6bfd Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 23 Mar 2016 15:44:09 -0300 Subject: [PATCH 40/44] perf help: Use asprintf instead of adhoc equivalents That doesn't chekcs malloc return and that, when using strbuf, if it can't grow, just explodes away via die(). Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-vr8qsjbwub7e892hpa9msz95@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-help.c | 69 ++++++++++++++++++--------------------- 1 file changed, 31 insertions(+), 38 deletions(-) diff --git a/tools/perf/builtin-help.c b/tools/perf/builtin-help.c index 49d55e21b1b0..bc1de9b8fd67 100644 --- a/tools/perf/builtin-help.c +++ b/tools/perf/builtin-help.c @@ -106,12 +106,14 @@ static void exec_woman_emacs(const char *path, const char *page) if (!check_emacsclient_version()) { /* This works only with emacsclient version >= 22. */ - struct strbuf man_page = STRBUF_INIT; + char *man_page; if (!path) path = "emacsclient"; - strbuf_addf(&man_page, "(woman \"%s\")", page); - execlp(path, "emacsclient", "-e", man_page.buf, NULL); + if (asprintf(&man_page, "(woman \"%s\")", page) > 0) { + execlp(path, "emacsclient", "-e", man_page, NULL); + free(man_page); + } warning("failed to exec '%s': %s", path, strerror_r(errno, sbuf, sizeof(sbuf))); } @@ -122,7 +124,7 @@ static void exec_man_konqueror(const char *path, const char *page) const char *display = getenv("DISPLAY"); if (display && *display) { - struct strbuf man_page = STRBUF_INIT; + char *man_page; const char *filename = "kfmclient"; char sbuf[STRERR_BUFSIZE]; @@ -141,8 +143,10 @@ static void exec_man_konqueror(const char *path, const char *page) filename = file; } else path = "kfmclient"; - strbuf_addf(&man_page, "man:%s(1)", page); - execlp(path, filename, "newTab", man_page.buf, NULL); + if (asprintf(&man_page, "man:%s(1)", page) > 0) { + execlp(path, filename, "newTab", man_page, NULL); + free(man_page); + } warning("failed to exec '%s': %s", path, strerror_r(errno, sbuf, sizeof(sbuf))); } @@ -161,11 +165,13 @@ static void exec_man_man(const char *path, const char *page) static void exec_man_cmd(const char *cmd, const char *page) { - struct strbuf shell_cmd = STRBUF_INIT; char sbuf[STRERR_BUFSIZE]; + char *shell_cmd; - strbuf_addf(&shell_cmd, "%s %s", cmd, page); - execl("/bin/sh", "sh", "-c", shell_cmd.buf, NULL); + if (asprintf(&shell_cmd, "%s %s", cmd, page) > 0) { + execl("/bin/sh", "sh", "-c", shell_cmd, NULL); + free(shell_cmd); + } warning("failed to exec '%s': %s", cmd, strerror_r(errno, sbuf, sizeof(sbuf))); } @@ -299,43 +305,33 @@ static int is_perf_command(const char *s) is_in_cmdlist(&other_cmds, s); } -static const char *prepend(const char *prefix, const char *cmd) -{ - size_t pre_len = strlen(prefix); - size_t cmd_len = strlen(cmd); - char *p = malloc(pre_len + cmd_len + 1); - memcpy(p, prefix, pre_len); - strcpy(p + pre_len, cmd); - return p; -} - static const char *cmd_to_page(const char *perf_cmd) { + char *s; + if (!perf_cmd) return "perf"; else if (!prefixcmp(perf_cmd, "perf")) return perf_cmd; - else - return prepend("perf-", perf_cmd); + + return asprintf(&s, "perf-%s", perf_cmd) < 0 ? NULL : s; } static void setup_man_path(void) { - struct strbuf new_path = STRBUF_INIT; + char *new_path; const char *old_path = getenv("MANPATH"); /* We should always put ':' after our path. If there is no * old_path, the ':' at the end will let 'man' to try * system-wide paths after ours to find the manual page. If * there is old_path, we need ':' as delimiter. */ - strbuf_addstr(&new_path, system_path(PERF_MAN_PATH)); - strbuf_addch(&new_path, ':'); - if (old_path) - strbuf_addstr(&new_path, old_path); - - setenv("MANPATH", new_path.buf, 1); - - strbuf_release(&new_path); + if (asprintf(&new_path, "%s:%s", system_path(PERF_MAN_PATH), old_path ?: "") > 0) { + setenv("MANPATH", new_path, 1); + free(new_path); + } else { + error("Unable to setup man path"); + } } static void exec_viewer(const char *name, const char *page) @@ -380,7 +376,7 @@ static int show_info_page(const char *perf_cmd) return -1; } -static int get_html_page_path(struct strbuf *page_path, const char *page) +static int get_html_page_path(char **page_path, const char *page) { struct stat st; const char *html_path = system_path(PERF_HTML_PATH); @@ -392,10 +388,7 @@ static int get_html_page_path(struct strbuf *page_path, const char *page) return -1; } - strbuf_init(page_path, 0); - strbuf_addf(page_path, "%s/%s.html", html_path, page); - - return 0; + return asprintf(page_path, "%s/%s.html", html_path, page); } /* @@ -413,12 +406,12 @@ static void open_html(const char *path) static int show_html_page(const char *perf_cmd) { const char *page = cmd_to_page(perf_cmd); - struct strbuf page_path; /* it leaks but we exec bellow */ + char *page_path; /* it leaks but we exec bellow */ - if (get_html_page_path(&page_path, page) != 0) + if (get_html_page_path(&page_path, page) < 0) return -1; - open_html(page_path.buf); + open_html(page_path); return 0; } From 88fd633cdfa19060a6575b1d53c55c14b11e4fe8 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 23 Mar 2016 16:44:49 -0300 Subject: [PATCH 41/44] perf probe: No need to use formatting strbuf method We have addch() for chars, add() for fixed size data, and addstr() for variable length strings, use them. Cc: Adrian Hunter Cc: Jiri Olsa Cc: Masami Hiramatsu Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-0ap02fn2xtvpduj2j6b2o1j4@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/dwarf-aux.c | 10 +++++----- tools/perf/util/probe-event.c | 2 +- tools/perf/util/probe-finder.c | 8 ++++---- 3 files changed, 10 insertions(+), 10 deletions(-) diff --git a/tools/perf/util/dwarf-aux.c b/tools/perf/util/dwarf-aux.c index a509aa8433a1..577e600c8eb1 100644 --- a/tools/perf/util/dwarf-aux.c +++ b/tools/perf/util/dwarf-aux.c @@ -915,7 +915,7 @@ int die_get_typename(Dwarf_Die *vr_die, struct strbuf *buf) tmp = "*"; else if (tag == DW_TAG_subroutine_type) { /* Function pointer */ - strbuf_addf(buf, "(function_type)"); + strbuf_add(buf, "(function_type)", 15); return 0; } else { if (!dwarf_diename(&type)) @@ -932,7 +932,7 @@ int die_get_typename(Dwarf_Die *vr_die, struct strbuf *buf) } ret = die_get_typename(&type, buf); if (ret == 0) - strbuf_addf(buf, "%s", tmp); + strbuf_addstr(buf, tmp); return ret; } @@ -951,7 +951,7 @@ int die_get_varname(Dwarf_Die *vr_die, struct strbuf *buf) ret = die_get_typename(vr_die, buf); if (ret < 0) { pr_debug("Failed to get type, make it unknown.\n"); - strbuf_addf(buf, "(unknown_type)"); + strbuf_add(buf, " (unknown_type)", 14); } strbuf_addf(buf, "\t%s", dwarf_diename(vr_die)); @@ -1013,7 +1013,7 @@ static int die_get_var_innermost_scope(Dwarf_Die *sp_die, Dwarf_Die *vr_die, } if (!first) - strbuf_addf(buf, "]>"); + strbuf_add(buf, "]>", 2); out: free(scopes); @@ -1076,7 +1076,7 @@ int die_get_var_range(Dwarf_Die *sp_die, Dwarf_Die *vr_die, struct strbuf *buf) } if (!first) - strbuf_addf(buf, "]>"); + strbuf_add(buf, "]>", 2); return ret; } diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index 93996ec4bbe3..8319fbb08636 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -2179,7 +2179,7 @@ static int perf_probe_event__sprintf(const char *group, const char *event, strbuf_addf(result, " in %s", module); if (pev->nargs > 0) { - strbuf_addstr(result, " with"); + strbuf_add(result, " with", 5); for (i = 0; i < pev->nargs; i++) { ret = synthesize_perf_probe_arg(&pev->args[i], buf, 128); diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c index 4ce5c5e18f48..b3bd0fba0237 100644 --- a/tools/perf/util/probe-finder.c +++ b/tools/perf/util/probe-finder.c @@ -1314,18 +1314,18 @@ static int collect_variables_cb(Dwarf_Die *die_mem, void *data) if (probe_conf.show_location_range) { if (!externs) { if (ret) - strbuf_addf(&buf, "[INV]\t"); + strbuf_add(&buf, "[INV]\t", 6); else - strbuf_addf(&buf, "[VAL]\t"); + strbuf_add(&buf, "[VAL]\t", 6); } else - strbuf_addf(&buf, "[EXT]\t"); + strbuf_add(&buf, "[EXT]\t", 6); } ret2 = die_get_varname(die_mem, &buf); if (!ret2 && probe_conf.show_location_range && !externs) { - strbuf_addf(&buf, "\t"); + strbuf_addch(&buf, '\t'); ret2 = die_get_var_range(&af->pf.sp_die, die_mem, &buf); } From 0741208a7cd4fc651316f1f861ad9e83495765fc Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 23 Mar 2016 16:56:56 -0300 Subject: [PATCH 42/44] perf tools: Unexport some methods unused outside strbuf.c Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-nq1wvtky4mpu0nupjyar7sbw@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/strbuf.c | 9 ++++++++- tools/perf/util/strbuf.h | 7 +------ 2 files changed, 9 insertions(+), 7 deletions(-) diff --git a/tools/perf/util/strbuf.c b/tools/perf/util/strbuf.c index d3d279275432..8fb73295ec34 100644 --- a/tools/perf/util/strbuf.c +++ b/tools/perf/util/strbuf.c @@ -51,6 +51,13 @@ void strbuf_grow(struct strbuf *sb, size_t extra) ALLOC_GROW(sb->buf, sb->len + extra + 1, sb->alloc); } +void strbuf_addch(struct strbuf *sb, int c) +{ + strbuf_grow(sb, 1); + sb->buf[sb->len++] = c; + sb->buf[sb->len] = '\0'; +} + void strbuf_add(struct strbuf *sb, const void *data, size_t len) { strbuf_grow(sb, len); @@ -58,7 +65,7 @@ void strbuf_add(struct strbuf *sb, const void *data, size_t len) strbuf_setlen(sb, sb->len + len); } -void strbuf_addv(struct strbuf *sb, const char *fmt, va_list ap) +static void strbuf_addv(struct strbuf *sb, const char *fmt, va_list ap) { int len; va_list ap_saved; diff --git a/tools/perf/util/strbuf.h b/tools/perf/util/strbuf.h index b73cbaaf93bc..ab9be0fbbd40 100644 --- a/tools/perf/util/strbuf.h +++ b/tools/perf/util/strbuf.h @@ -71,11 +71,7 @@ static inline void strbuf_setlen(struct strbuf *sb, size_t len) { } /*----- add data in your buffer -----*/ -static inline void strbuf_addch(struct strbuf *sb, int c) { - strbuf_grow(sb, 1); - sb->buf[sb->len++] = c; - sb->buf[sb->len] = '\0'; -} +void strbuf_addch(struct strbuf *sb, int c); void strbuf_add(struct strbuf *buf, const void *, size_t); static inline void strbuf_addstr(struct strbuf *sb, const char *s) { @@ -84,7 +80,6 @@ static inline void strbuf_addstr(struct strbuf *sb, const char *s) { __attribute__((format(printf,2,3))) void strbuf_addf(struct strbuf *sb, const char *fmt, ...); -void strbuf_addv(struct strbuf *sb, const char *fmt, va_list ap); /* XXX: if read fails, any partial read is undone */ ssize_t strbuf_read(struct strbuf *, int fd, ssize_t hint); From 78478269d2c9be315164d15c14e6e222a06d2f40 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 23 Mar 2016 17:34:29 -0300 Subject: [PATCH 43/44] perf llvm: Use realpath to canonicalize paths To kill the last user of make_nonrelative_path(), that gets ditched, one more panicking function killed. Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-3hu56rvyh4q5gxogovb6ko8a@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/Build | 1 - tools/perf/util/abspath.c | 37 ------------------------------------ tools/perf/util/cache.h | 1 - tools/perf/util/llvm-utils.c | 17 ++++++++++++----- 4 files changed, 12 insertions(+), 44 deletions(-) delete mode 100644 tools/perf/util/abspath.c diff --git a/tools/perf/util/Build b/tools/perf/util/Build index eea25e2424e9..da48fd843438 100644 --- a/tools/perf/util/Build +++ b/tools/perf/util/Build @@ -1,4 +1,3 @@ -libperf-y += abspath.o libperf-y += alias.o libperf-y += annotate.o libperf-y += build-id.o diff --git a/tools/perf/util/abspath.c b/tools/perf/util/abspath.c deleted file mode 100644 index 0e76affe9c36..000000000000 --- a/tools/perf/util/abspath.c +++ /dev/null @@ -1,37 +0,0 @@ -#include "cache.h" - -static const char *get_pwd_cwd(void) -{ - static char cwd[PATH_MAX + 1]; - char *pwd; - struct stat cwd_stat, pwd_stat; - if (getcwd(cwd, PATH_MAX) == NULL) - return NULL; - pwd = getenv("PWD"); - if (pwd && strcmp(pwd, cwd)) { - stat(cwd, &cwd_stat); - if (!stat(pwd, &pwd_stat) && - pwd_stat.st_dev == cwd_stat.st_dev && - pwd_stat.st_ino == cwd_stat.st_ino) { - strlcpy(cwd, pwd, PATH_MAX); - } - } - return cwd; -} - -const char *make_nonrelative_path(const char *path) -{ - static char buf[PATH_MAX + 1]; - - if (is_absolute_path(path)) { - if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX) - die("Too long path: %.*s", 60, path); - } else { - const char *cwd = get_pwd_cwd(); - if (!cwd) - die("Cannot determine the current working directory"); - if (snprintf(buf, PATH_MAX, "%s/%s", cwd, path) >= PATH_MAX) - die("Too long path: %.*s", 60, path); - } - return buf; -} diff --git a/tools/perf/util/cache.h b/tools/perf/util/cache.h index da322bea56f7..1f5a93c2c9a2 100644 --- a/tools/perf/util/cache.h +++ b/tools/perf/util/cache.h @@ -64,7 +64,6 @@ static inline int is_absolute_path(const char *path) return path[0] == '/'; } -const char *make_nonrelative_path(const char *path); char *strip_path_suffix(const char *path, const char *suffix); char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2))); diff --git a/tools/perf/util/llvm-utils.c b/tools/perf/util/llvm-utils.c index 00724d496d38..aab855f491ca 100644 --- a/tools/perf/util/llvm-utils.c +++ b/tools/perf/util/llvm-utils.c @@ -3,11 +3,11 @@ * Copyright (C) 2015, Huawei Inc. */ +#include #include -#include "util.h" +#include #include "debug.h" #include "llvm-utils.h" -#include "cache.h" #define CLANG_BPF_CMD_DEFAULT_TEMPLATE \ "$CLANG_EXEC -D__KERNEL__ -D__NR_CPUS__=$NR_CPUS "\ @@ -334,10 +334,18 @@ int llvm__compile_bpf(const char *path, void **p_obj_buf, unsigned int kernel_version; char linux_version_code_str[64]; const char *clang_opt = llvm_param.clang_opt; - char clang_path[PATH_MAX], nr_cpus_avail_str[64]; + char clang_path[PATH_MAX], abspath[PATH_MAX], nr_cpus_avail_str[64]; + char serr[STRERR_BUFSIZE]; char *kbuild_dir = NULL, *kbuild_include_opts = NULL; const char *template = llvm_param.clang_bpf_cmd_template; + if (path[0] != '-' && realpath(path, abspath) == NULL) { + err = errno; + pr_err("ERROR: problems with path %s: %s\n", + path, strerror_r(err, serr, sizeof(serr))); + return -err; + } + if (!template) template = CLANG_BPF_CMD_DEFAULT_TEMPLATE; @@ -387,8 +395,7 @@ int llvm__compile_bpf(const char *path, void **p_obj_buf, * stdin to be source file (testing). */ force_set_env("CLANG_SOURCE", - (path[0] == '-') ? path : - make_nonrelative_path(path)); + (path[0] == '-') ? path : abspath); pr_debug("llvm compiling command template: %s\n", template); err = read_from_pipe(template, &obj_buf, &obj_buf_sz); From 76267147f233f347dbd8f4f8c05492e5ea0a7dce Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 23 Mar 2016 17:42:21 -0300 Subject: [PATCH 44/44] perf llvm: Use strerror_r instead of the thread unsafe strerror one Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-5njrq9dltckgm624omw9ljgu@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/llvm-utils.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/tools/perf/util/llvm-utils.c b/tools/perf/util/llvm-utils.c index aab855f491ca..33071d6159bc 100644 --- a/tools/perf/util/llvm-utils.c +++ b/tools/perf/util/llvm-utils.c @@ -98,11 +98,12 @@ read_from_pipe(const char *cmd, void **p_buf, size_t *p_read_sz) void *buf = NULL; FILE *file = NULL; size_t read_sz = 0, buf_sz = 0; + char serr[STRERR_BUFSIZE]; file = popen(cmd, "r"); if (!file) { pr_err("ERROR: unable to popen cmd: %s\n", - strerror(errno)); + strerror_r(errno, serr, sizeof(serr))); return -EINVAL; } @@ -136,7 +137,7 @@ read_from_pipe(const char *cmd, void **p_buf, size_t *p_read_sz) if (ferror(file)) { pr_err("ERROR: error occurred when reading from pipe: %s\n", - strerror(errno)); + strerror_r(errno, serr, sizeof(serr))); err = -EIO; goto errout; } @@ -370,7 +371,7 @@ int llvm__compile_bpf(const char *path, void **p_obj_buf, if (nr_cpus_avail <= 0) { pr_err( "WARNING:\tunable to get available CPUs in this system: %s\n" -" \tUse 128 instead.\n", strerror(errno)); +" \tUse 128 instead.\n", strerror_r(errno, serr, sizeof(serr))); nr_cpus_avail = 128; } snprintf(nr_cpus_avail_str, sizeof(nr_cpus_avail_str), "%d",