Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (57 commits) x86, perf events: Check if we have APIC enabled perf_event: Fix variable initialization in other codepaths perf kmem: Fix unused argument build warning perf symbols: perf_header__read_build_ids() offset'n'size should be u64 perf symbols: dsos__read_build_ids() should read both user and kernel buildids perf tools: Align long options which have no short forms perf kmem: Show usage if no option is specified sched: Mark sched_clock() as notrace perf sched: Add max delay time snapshot perf tools: Correct size given to memset perf_event: Fix perf_swevent_hrtimer() variable initialization perf sched: Fix for getting task's execution time tracing/kprobes: Fix field creation's bad error handling perf_event: Cleanup for cpu_clock_perf_event_update() perf_event: Allocate children's perf_event_ctxp at the right time perf_event: Clean up __perf_event_init_context() hw-breakpoints: Modify breakpoints without unregistering them perf probe: Update perf-probe document perf probe: Support --del option trace-kprobe: Support delete probe syntax ...
This commit is contained in:
Linus Torvalds
commit
6f696eb17b
40 changed files with 889 additions and 576 deletions
|
|
@ -187,8 +187,8 @@ config HAVE_MMIOTRACE_SUPPORT
|
|||
def_bool y
|
||||
|
||||
config X86_DECODER_SELFTEST
|
||||
bool "x86 instruction decoder selftest"
|
||||
depends on DEBUG_KERNEL
|
||||
bool "x86 instruction decoder selftest"
|
||||
depends on DEBUG_KERNEL && KPROBES
|
||||
---help---
|
||||
Perform x86 instruction decoder selftests at build time.
|
||||
This option is useful for checking the sanity of x86 instruction
|
||||
|
|
|
|||
|
|
@ -1632,6 +1632,7 @@ static void intel_pmu_drain_bts_buffer(struct cpu_hw_events *cpuc)
|
|||
|
||||
data.period = event->hw.last_period;
|
||||
data.addr = 0;
|
||||
data.raw = NULL;
|
||||
regs.ip = 0;
|
||||
|
||||
/*
|
||||
|
|
@ -1749,6 +1750,7 @@ static int p6_pmu_handle_irq(struct pt_regs *regs)
|
|||
u64 val;
|
||||
|
||||
data.addr = 0;
|
||||
data.raw = NULL;
|
||||
|
||||
cpuc = &__get_cpu_var(cpu_hw_events);
|
||||
|
||||
|
|
@ -1794,6 +1796,7 @@ static int intel_pmu_handle_irq(struct pt_regs *regs)
|
|||
u64 ack, status;
|
||||
|
||||
data.addr = 0;
|
||||
data.raw = NULL;
|
||||
|
||||
cpuc = &__get_cpu_var(cpu_hw_events);
|
||||
|
||||
|
|
@ -1857,6 +1860,7 @@ static int amd_pmu_handle_irq(struct pt_regs *regs)
|
|||
u64 val;
|
||||
|
||||
data.addr = 0;
|
||||
data.raw = NULL;
|
||||
|
||||
cpuc = &__get_cpu_var(cpu_hw_events);
|
||||
|
||||
|
|
@ -2062,12 +2066,6 @@ static __init int p6_pmu_init(void)
|
|||
|
||||
x86_pmu = p6_pmu;
|
||||
|
||||
if (!cpu_has_apic) {
|
||||
pr_info("no APIC, boot with the \"lapic\" boot parameter to force-enable it.\n");
|
||||
pr_info("no hardware sampling interrupt available.\n");
|
||||
x86_pmu.apic = 0;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
@ -2159,6 +2157,16 @@ static __init int amd_pmu_init(void)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static void __init pmu_check_apic(void)
|
||||
{
|
||||
if (cpu_has_apic)
|
||||
return;
|
||||
|
||||
x86_pmu.apic = 0;
|
||||
pr_info("no APIC, boot with the \"lapic\" boot parameter to force-enable it.\n");
|
||||
pr_info("no hardware sampling interrupt available.\n");
|
||||
}
|
||||
|
||||
void __init init_hw_perf_events(void)
|
||||
{
|
||||
int err;
|
||||
|
|
@ -2180,6 +2188,8 @@ void __init init_hw_perf_events(void)
|
|||
return;
|
||||
}
|
||||
|
||||
pmu_check_apic();
|
||||
|
||||
pr_cont("%s PMU driver.\n", x86_pmu.name);
|
||||
|
||||
if (x86_pmu.num_events > X86_PMC_MAX_GENERIC) {
|
||||
|
|
@ -2287,7 +2297,7 @@ void callchain_store(struct perf_callchain_entry *entry, u64 ip)
|
|||
|
||||
static DEFINE_PER_CPU(struct perf_callchain_entry, pmc_irq_entry);
|
||||
static DEFINE_PER_CPU(struct perf_callchain_entry, pmc_nmi_entry);
|
||||
static DEFINE_PER_CPU(int, in_nmi_frame);
|
||||
static DEFINE_PER_CPU(int, in_ignored_frame);
|
||||
|
||||
|
||||
static void
|
||||
|
|
@ -2303,8 +2313,9 @@ static void backtrace_warning(void *data, char *msg)
|
|||
|
||||
static int backtrace_stack(void *data, char *name)
|
||||
{
|
||||
per_cpu(in_nmi_frame, smp_processor_id()) =
|
||||
x86_is_stack_id(NMI_STACK, name);
|
||||
per_cpu(in_ignored_frame, smp_processor_id()) =
|
||||
x86_is_stack_id(NMI_STACK, name) ||
|
||||
x86_is_stack_id(DEBUG_STACK, name);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -2313,7 +2324,7 @@ static void backtrace_address(void *data, unsigned long addr, int reliable)
|
|||
{
|
||||
struct perf_callchain_entry *entry = data;
|
||||
|
||||
if (per_cpu(in_nmi_frame, smp_processor_id()))
|
||||
if (per_cpu(in_ignored_frame, smp_processor_id()))
|
||||
return;
|
||||
|
||||
if (reliable)
|
||||
|
|
|
|||
|
|
@ -103,6 +103,35 @@ static unsigned long *in_exception_stack(unsigned cpu, unsigned long stack,
|
|||
return NULL;
|
||||
}
|
||||
|
||||
static inline int
|
||||
in_irq_stack(unsigned long *stack, unsigned long *irq_stack,
|
||||
unsigned long *irq_stack_end)
|
||||
{
|
||||
return (stack >= irq_stack && stack < irq_stack_end);
|
||||
}
|
||||
|
||||
/*
|
||||
* We are returning from the irq stack and go to the previous one.
|
||||
* If the previous stack is also in the irq stack, then bp in the first
|
||||
* frame of the irq stack points to the previous, interrupted one.
|
||||
* Otherwise we have another level of indirection: We first save
|
||||
* the bp of the previous stack, then we switch the stack to the irq one
|
||||
* and save a new bp that links to the previous one.
|
||||
* (See save_args())
|
||||
*/
|
||||
static inline unsigned long
|
||||
fixup_bp_irq_link(unsigned long bp, unsigned long *stack,
|
||||
unsigned long *irq_stack, unsigned long *irq_stack_end)
|
||||
{
|
||||
#ifdef CONFIG_FRAME_POINTER
|
||||
struct stack_frame *frame = (struct stack_frame *)bp;
|
||||
|
||||
if (!in_irq_stack(stack, irq_stack, irq_stack_end))
|
||||
return (unsigned long)frame->next_frame;
|
||||
#endif
|
||||
return bp;
|
||||
}
|
||||
|
||||
/*
|
||||
* x86-64 can have up to three kernel stacks:
|
||||
* process stack
|
||||
|
|
@ -175,7 +204,7 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
|
|||
irq_stack = irq_stack_end -
|
||||
(IRQ_STACK_SIZE - 64) / sizeof(*irq_stack);
|
||||
|
||||
if (stack >= irq_stack && stack < irq_stack_end) {
|
||||
if (in_irq_stack(stack, irq_stack, irq_stack_end)) {
|
||||
if (ops->stack(data, "IRQ") < 0)
|
||||
break;
|
||||
bp = print_context_stack(tinfo, stack, bp,
|
||||
|
|
@ -186,6 +215,8 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
|
|||
* pointer (index -1 to end) in the IRQ stack:
|
||||
*/
|
||||
stack = (unsigned long *) (irq_stack_end[-1]);
|
||||
bp = fixup_bp_irq_link(bp, stack, irq_stack,
|
||||
irq_stack_end);
|
||||
irq_stack_end = NULL;
|
||||
ops->stack(data, "EOI");
|
||||
continue;
|
||||
|
|
|
|||
|
|
@ -1076,10 +1076,10 @@ ENTRY(\sym)
|
|||
TRACE_IRQS_OFF
|
||||
movq %rsp,%rdi /* pt_regs pointer */
|
||||
xorl %esi,%esi /* no error code */
|
||||
PER_CPU(init_tss, %rbp)
|
||||
subq $EXCEPTION_STKSZ, TSS_ist + (\ist - 1) * 8(%rbp)
|
||||
PER_CPU(init_tss, %r12)
|
||||
subq $EXCEPTION_STKSZ, TSS_ist + (\ist - 1) * 8(%r12)
|
||||
call \do_sym
|
||||
addq $EXCEPTION_STKSZ, TSS_ist + (\ist - 1) * 8(%rbp)
|
||||
addq $EXCEPTION_STKSZ, TSS_ist + (\ist - 1) * 8(%r12)
|
||||
jmp paranoid_exit /* %ebx: no swapgs flag */
|
||||
CFI_ENDPROC
|
||||
END(\sym)
|
||||
|
|
|
|||
|
|
@ -362,8 +362,7 @@ int arch_validate_hwbkpt_settings(struct perf_event *bp,
|
|||
return ret;
|
||||
}
|
||||
|
||||
if (bp->callback)
|
||||
ret = arch_store_info(bp);
|
||||
ret = arch_store_info(bp);
|
||||
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
|
@ -519,7 +518,7 @@ static int __kprobes hw_breakpoint_handler(struct die_args *args)
|
|||
break;
|
||||
}
|
||||
|
||||
(bp->callback)(bp, args->regs);
|
||||
perf_bp_event(bp, args->regs);
|
||||
|
||||
rcu_read_unlock();
|
||||
}
|
||||
|
|
|
|||
|
|
@ -555,7 +555,9 @@ static int genregs_set(struct task_struct *target,
|
|||
return ret;
|
||||
}
|
||||
|
||||
static void ptrace_triggered(struct perf_event *bp, void *data)
|
||||
static void ptrace_triggered(struct perf_event *bp, int nmi,
|
||||
struct perf_sample_data *data,
|
||||
struct pt_regs *regs)
|
||||
{
|
||||
int i;
|
||||
struct thread_struct *thread = &(current->thread);
|
||||
|
|
@ -593,13 +595,13 @@ static unsigned long ptrace_get_dr7(struct perf_event *bp[])
|
|||
return dr7;
|
||||
}
|
||||
|
||||
static struct perf_event *
|
||||
static int
|
||||
ptrace_modify_breakpoint(struct perf_event *bp, int len, int type,
|
||||
struct task_struct *tsk, int disabled)
|
||||
{
|
||||
int err;
|
||||
int gen_len, gen_type;
|
||||
DEFINE_BREAKPOINT_ATTR(attr);
|
||||
struct perf_event_attr attr;
|
||||
|
||||
/*
|
||||
* We shoud have at least an inactive breakpoint at this
|
||||
|
|
@ -607,18 +609,18 @@ ptrace_modify_breakpoint(struct perf_event *bp, int len, int type,
|
|||
* written the address register first
|
||||
*/
|
||||
if (!bp)
|
||||
return ERR_PTR(-EINVAL);
|
||||
return -EINVAL;
|
||||
|
||||
err = arch_bp_generic_fields(len, type, &gen_len, &gen_type);
|
||||
if (err)
|
||||
return ERR_PTR(err);
|
||||
return err;
|
||||
|
||||
attr = bp->attr;
|
||||
attr.bp_len = gen_len;
|
||||
attr.bp_type = gen_type;
|
||||
attr.disabled = disabled;
|
||||
|
||||
return modify_user_hw_breakpoint(bp, &attr, bp->callback, tsk);
|
||||
return modify_user_hw_breakpoint(bp, &attr);
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
@ -656,28 +658,17 @@ static int ptrace_write_dr7(struct task_struct *tsk, unsigned long data)
|
|||
if (!second_pass)
|
||||
continue;
|
||||
|
||||
thread->ptrace_bps[i] = NULL;
|
||||
bp = ptrace_modify_breakpoint(bp, len, type,
|
||||
rc = ptrace_modify_breakpoint(bp, len, type,
|
||||
tsk, 1);
|
||||
if (IS_ERR(bp)) {
|
||||
rc = PTR_ERR(bp);
|
||||
thread->ptrace_bps[i] = NULL;
|
||||
if (rc)
|
||||
break;
|
||||
}
|
||||
thread->ptrace_bps[i] = bp;
|
||||
}
|
||||
continue;
|
||||
}
|
||||
|
||||
bp = ptrace_modify_breakpoint(bp, len, type, tsk, 0);
|
||||
|
||||
/* Incorrect bp, or we have a bug in bp API */
|
||||
if (IS_ERR(bp)) {
|
||||
rc = PTR_ERR(bp);
|
||||
thread->ptrace_bps[i] = NULL;
|
||||
rc = ptrace_modify_breakpoint(bp, len, type, tsk, 0);
|
||||
if (rc)
|
||||
break;
|
||||
}
|
||||
thread->ptrace_bps[i] = bp;
|
||||
}
|
||||
/*
|
||||
* Make a second pass to free the remaining unused breakpoints
|
||||
|
|
@ -721,9 +712,10 @@ static int ptrace_set_breakpoint_addr(struct task_struct *tsk, int nr,
|
|||
{
|
||||
struct perf_event *bp;
|
||||
struct thread_struct *t = &tsk->thread;
|
||||
DEFINE_BREAKPOINT_ATTR(attr);
|
||||
struct perf_event_attr attr;
|
||||
|
||||
if (!t->ptrace_bps[nr]) {
|
||||
hw_breakpoint_init(&attr);
|
||||
/*
|
||||
* Put stub len and type to register (reserve) an inactive but
|
||||
* correct bp
|
||||
|
|
@ -734,26 +726,32 @@ static int ptrace_set_breakpoint_addr(struct task_struct *tsk, int nr,
|
|||
attr.disabled = 1;
|
||||
|
||||
bp = register_user_hw_breakpoint(&attr, ptrace_triggered, tsk);
|
||||
|
||||
/*
|
||||
* CHECKME: the previous code returned -EIO if the addr wasn't
|
||||
* a valid task virtual addr. The new one will return -EINVAL in
|
||||
* this case.
|
||||
* -EINVAL may be what we want for in-kernel breakpoints users,
|
||||
* but -EIO looks better for ptrace, since we refuse a register
|
||||
* writing for the user. And anyway this is the previous
|
||||
* behaviour.
|
||||
*/
|
||||
if (IS_ERR(bp))
|
||||
return PTR_ERR(bp);
|
||||
|
||||
t->ptrace_bps[nr] = bp;
|
||||
} else {
|
||||
int err;
|
||||
|
||||
bp = t->ptrace_bps[nr];
|
||||
t->ptrace_bps[nr] = NULL;
|
||||
|
||||
attr = bp->attr;
|
||||
attr.bp_addr = addr;
|
||||
bp = modify_user_hw_breakpoint(bp, &attr, bp->callback, tsk);
|
||||
err = modify_user_hw_breakpoint(bp, &attr);
|
||||
if (err)
|
||||
return err;
|
||||
}
|
||||
/*
|
||||
* CHECKME: the previous code returned -EIO if the addr wasn't a
|
||||
* valid task virtual addr. The new one will return -EINVAL in this
|
||||
* case.
|
||||
* -EINVAL may be what we want for in-kernel breakpoints users, but
|
||||
* -EIO looks better for ptrace, since we refuse a register writing
|
||||
* for the user. And anyway this is the previous behaviour.
|
||||
*/
|
||||
if (IS_ERR(bp))
|
||||
return PTR_ERR(bp);
|
||||
|
||||
t->ptrace_bps[nr] = bp;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -5,7 +5,7 @@
|
|||
inat_tables_script = $(srctree)/arch/x86/tools/gen-insn-attr-x86.awk
|
||||
inat_tables_maps = $(srctree)/arch/x86/lib/x86-opcode-map.txt
|
||||
quiet_cmd_inat_tables = GEN $@
|
||||
cmd_inat_tables = $(AWK) -f $(inat_tables_script) $(inat_tables_maps) > $@
|
||||
cmd_inat_tables = $(AWK) -f $(inat_tables_script) $(inat_tables_maps) > $@ || rm -f $@
|
||||
|
||||
$(obj)/inat-tables.c: $(inat_tables_script) $(inat_tables_maps)
|
||||
$(call cmd,inat_tables)
|
||||
|
|
@ -20,7 +20,7 @@ lib-y := delay.o
|
|||
lib-y += thunk_$(BITS).o
|
||||
lib-y += usercopy_$(BITS).o getuser.o putuser.o
|
||||
lib-y += memcpy_$(BITS).o
|
||||
lib-y += insn.o inat.o
|
||||
lib-$(CONFIG_KPROBES) += insn.o inat.o
|
||||
|
||||
obj-y += msr-reg.o msr-reg-export.o
|
||||
|
||||
|
|
|
|||
|
|
@ -113,7 +113,7 @@ int main(int argc, char **argv)
|
|||
char line[BUFSIZE], sym[BUFSIZE] = "<unknown>";
|
||||
unsigned char insn_buf[16];
|
||||
struct insn insn;
|
||||
int insns = 0, c;
|
||||
int insns = 0;
|
||||
int warnings = 0;
|
||||
|
||||
parse_args(argc, argv);
|
||||
|
|
|
|||
|
|
@ -20,19 +20,18 @@ enum {
|
|||
|
||||
#ifdef CONFIG_HAVE_HW_BREAKPOINT
|
||||
|
||||
/* As it's for in-kernel or ptrace use, we want it to be pinned */
|
||||
#define DEFINE_BREAKPOINT_ATTR(name) \
|
||||
struct perf_event_attr name = { \
|
||||
.type = PERF_TYPE_BREAKPOINT, \
|
||||
.size = sizeof(name), \
|
||||
.pinned = 1, \
|
||||
};
|
||||
|
||||
static inline void hw_breakpoint_init(struct perf_event_attr *attr)
|
||||
{
|
||||
memset(attr, 0, sizeof(*attr));
|
||||
|
||||
attr->type = PERF_TYPE_BREAKPOINT;
|
||||
attr->size = sizeof(*attr);
|
||||
/*
|
||||
* As it's for in-kernel or ptrace use, we want it to be pinned
|
||||
* and to call its callback every hits.
|
||||
*/
|
||||
attr->pinned = 1;
|
||||
attr->sample_period = 1;
|
||||
}
|
||||
|
||||
static inline unsigned long hw_breakpoint_addr(struct perf_event *bp)
|
||||
|
|
@ -52,27 +51,24 @@ static inline int hw_breakpoint_len(struct perf_event *bp)
|
|||
|
||||
extern struct perf_event *
|
||||
register_user_hw_breakpoint(struct perf_event_attr *attr,
|
||||
perf_callback_t triggered,
|
||||
perf_overflow_handler_t triggered,
|
||||
struct task_struct *tsk);
|
||||
|
||||
/* FIXME: only change from the attr, and don't unregister */
|
||||
extern struct perf_event *
|
||||
modify_user_hw_breakpoint(struct perf_event *bp,
|
||||
struct perf_event_attr *attr,
|
||||
perf_callback_t triggered,
|
||||
struct task_struct *tsk);
|
||||
extern int
|
||||
modify_user_hw_breakpoint(struct perf_event *bp, struct perf_event_attr *attr);
|
||||
|
||||
/*
|
||||
* Kernel breakpoints are not associated with any particular thread.
|
||||
*/
|
||||
extern struct perf_event *
|
||||
register_wide_hw_breakpoint_cpu(struct perf_event_attr *attr,
|
||||
perf_callback_t triggered,
|
||||
perf_overflow_handler_t triggered,
|
||||
int cpu);
|
||||
|
||||
extern struct perf_event **
|
||||
register_wide_hw_breakpoint(struct perf_event_attr *attr,
|
||||
perf_callback_t triggered);
|
||||
perf_overflow_handler_t triggered);
|
||||
|
||||
extern int register_perf_hw_breakpoint(struct perf_event *bp);
|
||||
extern int __register_perf_hw_breakpoint(struct perf_event *bp);
|
||||
|
|
@ -93,20 +89,18 @@ static inline struct arch_hw_breakpoint *counter_arch_bp(struct perf_event *bp)
|
|||
|
||||
static inline struct perf_event *
|
||||
register_user_hw_breakpoint(struct perf_event_attr *attr,
|
||||
perf_callback_t triggered,
|
||||
perf_overflow_handler_t triggered,
|
||||
struct task_struct *tsk) { return NULL; }
|
||||
static inline struct perf_event *
|
||||
static inline int
|
||||
modify_user_hw_breakpoint(struct perf_event *bp,
|
||||
struct perf_event_attr *attr,
|
||||
perf_callback_t triggered,
|
||||
struct task_struct *tsk) { return NULL; }
|
||||
struct perf_event_attr *attr) { return NULL; }
|
||||
static inline struct perf_event *
|
||||
register_wide_hw_breakpoint_cpu(struct perf_event_attr *attr,
|
||||
perf_callback_t triggered,
|
||||
perf_overflow_handler_t triggered,
|
||||
int cpu) { return NULL; }
|
||||
static inline struct perf_event **
|
||||
register_wide_hw_breakpoint(struct perf_event_attr *attr,
|
||||
perf_callback_t triggered) { return NULL; }
|
||||
perf_overflow_handler_t triggered) { return NULL; }
|
||||
static inline int
|
||||
register_perf_hw_breakpoint(struct perf_event *bp) { return -ENOSYS; }
|
||||
static inline int
|
||||
|
|
|
|||
|
|
@ -18,10 +18,6 @@
|
|||
#include <linux/ioctl.h>
|
||||
#include <asm/byteorder.h>
|
||||
|
||||
#ifdef CONFIG_HAVE_HW_BREAKPOINT
|
||||
#include <asm/hw_breakpoint.h>
|
||||
#endif
|
||||
|
||||
/*
|
||||
* User-space ABI bits:
|
||||
*/
|
||||
|
|
@ -215,12 +211,12 @@ struct perf_event_attr {
|
|||
__u32 wakeup_watermark; /* bytes before wakeup */
|
||||
};
|
||||
|
||||
union {
|
||||
struct { /* Hardware breakpoint info */
|
||||
__u64 bp_addr;
|
||||
__u32 bp_type;
|
||||
__u32 bp_len;
|
||||
};
|
||||
struct { /* Hardware breakpoint info */
|
||||
__u64 bp_addr;
|
||||
__u32 bp_type;
|
||||
__u32 bp_len;
|
||||
__u64 __bp_reserved_1;
|
||||
__u64 __bp_reserved_2;
|
||||
};
|
||||
|
||||
__u32 __reserved_2;
|
||||
|
|
@ -451,6 +447,10 @@ enum perf_callchain_context {
|
|||
# include <asm/perf_event.h>
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_HAVE_HW_BREAKPOINT
|
||||
#include <asm/hw_breakpoint.h>
|
||||
#endif
|
||||
|
||||
#include <linux/list.h>
|
||||
#include <linux/mutex.h>
|
||||
#include <linux/rculist.h>
|
||||
|
|
@ -565,10 +565,12 @@ struct perf_pending_entry {
|
|||
void (*func)(struct perf_pending_entry *);
|
||||
};
|
||||
|
||||
typedef void (*perf_callback_t)(struct perf_event *, void *);
|
||||
|
||||
struct perf_sample_data;
|
||||
|
||||
typedef void (*perf_overflow_handler_t)(struct perf_event *, int,
|
||||
struct perf_sample_data *,
|
||||
struct pt_regs *regs);
|
||||
|
||||
/**
|
||||
* struct perf_event - performance event kernel representation:
|
||||
*/
|
||||
|
|
@ -660,18 +662,12 @@ struct perf_event {
|
|||
struct pid_namespace *ns;
|
||||
u64 id;
|
||||
|
||||
void (*overflow_handler)(struct perf_event *event,
|
||||
int nmi, struct perf_sample_data *data,
|
||||
struct pt_regs *regs);
|
||||
perf_overflow_handler_t overflow_handler;
|
||||
|
||||
#ifdef CONFIG_EVENT_PROFILE
|
||||
struct event_filter *filter;
|
||||
#endif
|
||||
|
||||
perf_callback_t callback;
|
||||
|
||||
perf_callback_t event_callback;
|
||||
|
||||
#endif /* CONFIG_PERF_EVENTS */
|
||||
};
|
||||
|
||||
|
|
@ -781,7 +777,7 @@ extern struct perf_event *
|
|||
perf_event_create_kernel_counter(struct perf_event_attr *attr,
|
||||
int cpu,
|
||||
pid_t pid,
|
||||
perf_callback_t callback);
|
||||
perf_overflow_handler_t callback);
|
||||
extern u64 perf_event_read_value(struct perf_event *event,
|
||||
u64 *enabled, u64 *running);
|
||||
|
||||
|
|
@ -876,6 +872,8 @@ extern void perf_output_copy(struct perf_output_handle *handle,
|
|||
const void *buf, unsigned int len);
|
||||
extern int perf_swevent_get_recursion_context(void);
|
||||
extern void perf_swevent_put_recursion_context(int rctx);
|
||||
extern void perf_event_enable(struct perf_event *event);
|
||||
extern void perf_event_disable(struct perf_event *event);
|
||||
#else
|
||||
static inline void
|
||||
perf_event_task_sched_in(struct task_struct *task, int cpu) { }
|
||||
|
|
@ -906,7 +904,8 @@ static inline void perf_event_fork(struct task_struct *tsk) { }
|
|||
static inline void perf_event_init(void) { }
|
||||
static inline int perf_swevent_get_recursion_context(void) { return -1; }
|
||||
static inline void perf_swevent_put_recursion_context(int rctx) { }
|
||||
|
||||
static inline void perf_event_enable(struct perf_event *event) { }
|
||||
static inline void perf_event_disable(struct perf_event *event) { }
|
||||
#endif
|
||||
|
||||
#define perf_output_put(handle, x) \
|
||||
|
|
|
|||
|
|
@ -1840,7 +1840,8 @@ static inline int set_cpus_allowed(struct task_struct *p, cpumask_t new_mask)
|
|||
extern int sched_clock_stable;
|
||||
#endif
|
||||
|
||||
extern unsigned long long sched_clock(void);
|
||||
/* ftrace calls sched_clock() directly */
|
||||
extern unsigned long long notrace sched_clock(void);
|
||||
|
||||
extern void sched_clock_init(void);
|
||||
extern u64 sched_clock_cpu(int cpu);
|
||||
|
|
|
|||
|
|
@ -52,7 +52,7 @@
|
|||
static DEFINE_PER_CPU(unsigned int, nr_cpu_bp_pinned);
|
||||
|
||||
/* Number of pinned task breakpoints in a cpu */
|
||||
static DEFINE_PER_CPU(unsigned int, task_bp_pinned[HBP_NUM]);
|
||||
static DEFINE_PER_CPU(unsigned int, nr_task_bp_pinned[HBP_NUM]);
|
||||
|
||||
/* Number of non-pinned cpu/task breakpoints in a cpu */
|
||||
static DEFINE_PER_CPU(unsigned int, nr_bp_flexible);
|
||||
|
|
@ -73,7 +73,7 @@ static DEFINE_MUTEX(nr_bp_mutex);
|
|||
static unsigned int max_task_bp_pinned(int cpu)
|
||||
{
|
||||
int i;
|
||||
unsigned int *tsk_pinned = per_cpu(task_bp_pinned, cpu);
|
||||
unsigned int *tsk_pinned = per_cpu(nr_task_bp_pinned, cpu);
|
||||
|
||||
for (i = HBP_NUM -1; i >= 0; i--) {
|
||||
if (tsk_pinned[i] > 0)
|
||||
|
|
@ -83,50 +83,16 @@ static unsigned int max_task_bp_pinned(int cpu)
|
|||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Report the number of pinned/un-pinned breakpoints we have in
|
||||
* a given cpu (cpu > -1) or in all of them (cpu = -1).
|
||||
*/
|
||||
static void fetch_bp_busy_slots(struct bp_busy_slots *slots, int cpu)
|
||||
static int task_bp_pinned(struct task_struct *tsk)
|
||||
{
|
||||
if (cpu >= 0) {
|
||||
slots->pinned = per_cpu(nr_cpu_bp_pinned, cpu);
|
||||
slots->pinned += max_task_bp_pinned(cpu);
|
||||
slots->flexible = per_cpu(nr_bp_flexible, cpu);
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
for_each_online_cpu(cpu) {
|
||||
unsigned int nr;
|
||||
|
||||
nr = per_cpu(nr_cpu_bp_pinned, cpu);
|
||||
nr += max_task_bp_pinned(cpu);
|
||||
|
||||
if (nr > slots->pinned)
|
||||
slots->pinned = nr;
|
||||
|
||||
nr = per_cpu(nr_bp_flexible, cpu);
|
||||
|
||||
if (nr > slots->flexible)
|
||||
slots->flexible = nr;
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Add a pinned breakpoint for the given task in our constraint table
|
||||
*/
|
||||
static void toggle_bp_task_slot(struct task_struct *tsk, int cpu, bool enable)
|
||||
{
|
||||
int count = 0;
|
||||
struct perf_event *bp;
|
||||
struct perf_event_context *ctx = tsk->perf_event_ctxp;
|
||||
unsigned int *tsk_pinned;
|
||||
struct list_head *list;
|
||||
struct perf_event *bp;
|
||||
unsigned long flags;
|
||||
int count = 0;
|
||||
|
||||
if (WARN_ONCE(!ctx, "No perf context for this task"))
|
||||
return;
|
||||
return 0;
|
||||
|
||||
list = &ctx->event_list;
|
||||
|
||||
|
|
@ -143,10 +109,60 @@ static void toggle_bp_task_slot(struct task_struct *tsk, int cpu, bool enable)
|
|||
|
||||
spin_unlock_irqrestore(&ctx->lock, flags);
|
||||
|
||||
if (WARN_ONCE(count < 0, "No breakpoint counter found in the counter list"))
|
||||
return;
|
||||
return count;
|
||||
}
|
||||
|
||||
tsk_pinned = per_cpu(task_bp_pinned, cpu);
|
||||
/*
|
||||
* Report the number of pinned/un-pinned breakpoints we have in
|
||||
* a given cpu (cpu > -1) or in all of them (cpu = -1).
|
||||
*/
|
||||
static void
|
||||
fetch_bp_busy_slots(struct bp_busy_slots *slots, struct perf_event *bp)
|
||||
{
|
||||
int cpu = bp->cpu;
|
||||
struct task_struct *tsk = bp->ctx->task;
|
||||
|
||||
if (cpu >= 0) {
|
||||
slots->pinned = per_cpu(nr_cpu_bp_pinned, cpu);
|
||||
if (!tsk)
|
||||
slots->pinned += max_task_bp_pinned(cpu);
|
||||
else
|
||||
slots->pinned += task_bp_pinned(tsk);
|
||||
slots->flexible = per_cpu(nr_bp_flexible, cpu);
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
for_each_online_cpu(cpu) {
|
||||
unsigned int nr;
|
||||
|
||||
nr = per_cpu(nr_cpu_bp_pinned, cpu);
|
||||
if (!tsk)
|
||||
nr += max_task_bp_pinned(cpu);
|
||||
else
|
||||
nr += task_bp_pinned(tsk);
|
||||
|
||||
if (nr > slots->pinned)
|
||||
slots->pinned = nr;
|
||||
|
||||
nr = per_cpu(nr_bp_flexible, cpu);
|
||||
|
||||
if (nr > slots->flexible)
|
||||
slots->flexible = nr;
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Add a pinned breakpoint for the given task in our constraint table
|
||||
*/
|
||||
static void toggle_bp_task_slot(struct task_struct *tsk, int cpu, bool enable)
|
||||
{
|
||||
unsigned int *tsk_pinned;
|
||||
int count = 0;
|
||||
|
||||
count = task_bp_pinned(tsk);
|
||||
|
||||
tsk_pinned = per_cpu(nr_task_bp_pinned, cpu);
|
||||
if (enable) {
|
||||
tsk_pinned[count]++;
|
||||
if (count > 0)
|
||||
|
|
@ -193,7 +209,7 @@ static void toggle_bp_slot(struct perf_event *bp, bool enable)
|
|||
* - If attached to a single cpu, check:
|
||||
*
|
||||
* (per_cpu(nr_bp_flexible, cpu) || (per_cpu(nr_cpu_bp_pinned, cpu)
|
||||
* + max(per_cpu(task_bp_pinned, cpu)))) < HBP_NUM
|
||||
* + max(per_cpu(nr_task_bp_pinned, cpu)))) < HBP_NUM
|
||||
*
|
||||
* -> If there are already non-pinned counters in this cpu, it means
|
||||
* there is already a free slot for them.
|
||||
|
|
@ -204,7 +220,7 @@ static void toggle_bp_slot(struct perf_event *bp, bool enable)
|
|||
* - If attached to every cpus, check:
|
||||
*
|
||||
* (per_cpu(nr_bp_flexible, *) || (max(per_cpu(nr_cpu_bp_pinned, *))
|
||||
* + max(per_cpu(task_bp_pinned, *)))) < HBP_NUM
|
||||
* + max(per_cpu(nr_task_bp_pinned, *)))) < HBP_NUM
|
||||
*
|
||||
* -> This is roughly the same, except we check the number of per cpu
|
||||
* bp for every cpu and we keep the max one. Same for the per tasks
|
||||
|
|
@ -216,7 +232,7 @@ static void toggle_bp_slot(struct perf_event *bp, bool enable)
|
|||
* - If attached to a single cpu, check:
|
||||
*
|
||||
* ((per_cpu(nr_bp_flexible, cpu) > 1) + per_cpu(nr_cpu_bp_pinned, cpu)
|
||||
* + max(per_cpu(task_bp_pinned, cpu))) < HBP_NUM
|
||||
* + max(per_cpu(nr_task_bp_pinned, cpu))) < HBP_NUM
|
||||
*
|
||||
* -> Same checks as before. But now the nr_bp_flexible, if any, must keep
|
||||
* one register at least (or they will never be fed).
|
||||
|
|
@ -224,7 +240,7 @@ static void toggle_bp_slot(struct perf_event *bp, bool enable)
|
|||
* - If attached to every cpus, check:
|
||||
*
|
||||
* ((per_cpu(nr_bp_flexible, *) > 1) + max(per_cpu(nr_cpu_bp_pinned, *))
|
||||
* + max(per_cpu(task_bp_pinned, *))) < HBP_NUM
|
||||
* + max(per_cpu(nr_task_bp_pinned, *))) < HBP_NUM
|
||||
*/
|
||||
int reserve_bp_slot(struct perf_event *bp)
|
||||
{
|
||||
|
|
@ -233,7 +249,7 @@ int reserve_bp_slot(struct perf_event *bp)
|
|||
|
||||
mutex_lock(&nr_bp_mutex);
|
||||
|
||||
fetch_bp_busy_slots(&slots, bp->cpu);
|
||||
fetch_bp_busy_slots(&slots, bp);
|
||||
|
||||
/* Flexible counters need to keep at least one slot */
|
||||
if (slots.pinned + (!!slots.flexible) == HBP_NUM) {
|
||||
|
|
@ -259,7 +275,7 @@ void release_bp_slot(struct perf_event *bp)
|
|||
}
|
||||
|
||||
|
||||
int __register_perf_hw_breakpoint(struct perf_event *bp)
|
||||
int register_perf_hw_breakpoint(struct perf_event *bp)
|
||||
{
|
||||
int ret;
|
||||
|
||||
|
|
@ -276,19 +292,12 @@ int __register_perf_hw_breakpoint(struct perf_event *bp)
|
|||
* This is a quick hack that will be removed soon, once we remove
|
||||
* the tmp breakpoints from ptrace
|
||||
*/
|
||||
if (!bp->attr.disabled || bp->callback == perf_bp_event)
|
||||
if (!bp->attr.disabled || !bp->overflow_handler)
|
||||
ret = arch_validate_hwbkpt_settings(bp, bp->ctx->task);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int register_perf_hw_breakpoint(struct perf_event *bp)
|
||||
{
|
||||
bp->callback = perf_bp_event;
|
||||
|
||||
return __register_perf_hw_breakpoint(bp);
|
||||
}
|
||||
|
||||
/**
|
||||
* register_user_hw_breakpoint - register a hardware breakpoint for user space
|
||||
* @attr: breakpoint attributes
|
||||
|
|
@ -297,7 +306,7 @@ int register_perf_hw_breakpoint(struct perf_event *bp)
|
|||
*/
|
||||
struct perf_event *
|
||||
register_user_hw_breakpoint(struct perf_event_attr *attr,
|
||||
perf_callback_t triggered,
|
||||
perf_overflow_handler_t triggered,
|
||||
struct task_struct *tsk)
|
||||
{
|
||||
return perf_event_create_kernel_counter(attr, -1, tsk->pid, triggered);
|
||||
|
|
@ -311,19 +320,40 @@ EXPORT_SYMBOL_GPL(register_user_hw_breakpoint);
|
|||
* @triggered: callback to trigger when we hit the breakpoint
|
||||
* @tsk: pointer to 'task_struct' of the process to which the address belongs
|
||||
*/
|
||||
struct perf_event *
|
||||
modify_user_hw_breakpoint(struct perf_event *bp, struct perf_event_attr *attr,
|
||||
perf_callback_t triggered,
|
||||
struct task_struct *tsk)
|
||||
int modify_user_hw_breakpoint(struct perf_event *bp, struct perf_event_attr *attr)
|
||||
{
|
||||
/*
|
||||
* FIXME: do it without unregistering
|
||||
* - We don't want to lose our slot
|
||||
* - If the new bp is incorrect, don't lose the older one
|
||||
*/
|
||||
unregister_hw_breakpoint(bp);
|
||||
u64 old_addr = bp->attr.bp_addr;
|
||||
int old_type = bp->attr.bp_type;
|
||||
int old_len = bp->attr.bp_len;
|
||||
int err = 0;
|
||||
|
||||
return perf_event_create_kernel_counter(attr, -1, tsk->pid, triggered);
|
||||
perf_event_disable(bp);
|
||||
|
||||
bp->attr.bp_addr = attr->bp_addr;
|
||||
bp->attr.bp_type = attr->bp_type;
|
||||
bp->attr.bp_len = attr->bp_len;
|
||||
|
||||
if (attr->disabled)
|
||||
goto end;
|
||||
|
||||
err = arch_validate_hwbkpt_settings(bp, bp->ctx->task);
|
||||
if (!err)
|
||||
perf_event_enable(bp);
|
||||
|
||||
if (err) {
|
||||
bp->attr.bp_addr = old_addr;
|
||||
bp->attr.bp_type = old_type;
|
||||
bp->attr.bp_len = old_len;
|
||||
if (!bp->attr.disabled)
|
||||
perf_event_enable(bp);
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
end:
|
||||
bp->attr.disabled = attr->disabled;
|
||||
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(modify_user_hw_breakpoint);
|
||||
|
||||
|
|
@ -348,7 +378,7 @@ EXPORT_SYMBOL_GPL(unregister_hw_breakpoint);
|
|||
*/
|
||||
struct perf_event **
|
||||
register_wide_hw_breakpoint(struct perf_event_attr *attr,
|
||||
perf_callback_t triggered)
|
||||
perf_overflow_handler_t triggered)
|
||||
{
|
||||
struct perf_event **cpu_events, **pevent, *bp;
|
||||
long err;
|
||||
|
|
|
|||
|
|
@ -36,7 +36,7 @@
|
|||
/*
|
||||
* Each CPU has a list of per CPU events:
|
||||
*/
|
||||
DEFINE_PER_CPU(struct perf_cpu_context, perf_cpu_context);
|
||||
static DEFINE_PER_CPU(struct perf_cpu_context, perf_cpu_context);
|
||||
|
||||
int perf_max_events __read_mostly = 1;
|
||||
static int perf_reserved_percpu __read_mostly;
|
||||
|
|
@ -567,7 +567,7 @@ static void __perf_event_disable(void *info)
|
|||
* is the current context on this CPU and preemption is disabled,
|
||||
* hence we can't get into perf_event_task_sched_out for this context.
|
||||
*/
|
||||
static void perf_event_disable(struct perf_event *event)
|
||||
void perf_event_disable(struct perf_event *event)
|
||||
{
|
||||
struct perf_event_context *ctx = event->ctx;
|
||||
struct task_struct *task = ctx->task;
|
||||
|
|
@ -971,7 +971,7 @@ static void __perf_event_enable(void *info)
|
|||
* perf_event_for_each_child or perf_event_for_each as described
|
||||
* for perf_event_disable.
|
||||
*/
|
||||
static void perf_event_enable(struct perf_event *event)
|
||||
void perf_event_enable(struct perf_event *event)
|
||||
{
|
||||
struct perf_event_context *ctx = event->ctx;
|
||||
struct task_struct *task = ctx->task;
|
||||
|
|
@ -1579,7 +1579,6 @@ static void
|
|||
__perf_event_init_context(struct perf_event_context *ctx,
|
||||
struct task_struct *task)
|
||||
{
|
||||
memset(ctx, 0, sizeof(*ctx));
|
||||
spin_lock_init(&ctx->lock);
|
||||
mutex_init(&ctx->mutex);
|
||||
INIT_LIST_HEAD(&ctx->group_list);
|
||||
|
|
@ -1654,7 +1653,7 @@ static struct perf_event_context *find_get_context(pid_t pid, int cpu)
|
|||
}
|
||||
|
||||
if (!ctx) {
|
||||
ctx = kmalloc(sizeof(struct perf_event_context), GFP_KERNEL);
|
||||
ctx = kzalloc(sizeof(struct perf_event_context), GFP_KERNEL);
|
||||
err = -ENOMEM;
|
||||
if (!ctx)
|
||||
goto errout;
|
||||
|
|
@ -4011,6 +4010,7 @@ static enum hrtimer_restart perf_swevent_hrtimer(struct hrtimer *hrtimer)
|
|||
event->pmu->read(event);
|
||||
|
||||
data.addr = 0;
|
||||
data.raw = NULL;
|
||||
data.period = event->hw.last_period;
|
||||
regs = get_irq_regs();
|
||||
/*
|
||||
|
|
@ -4080,8 +4080,7 @@ static void cpu_clock_perf_event_update(struct perf_event *event)
|
|||
u64 now;
|
||||
|
||||
now = cpu_clock(cpu);
|
||||
prev = atomic64_read(&event->hw.prev_count);
|
||||
atomic64_set(&event->hw.prev_count, now);
|
||||
prev = atomic64_xchg(&event->hw.prev_count, now);
|
||||
atomic64_add(now - prev, &event->count);
|
||||
}
|
||||
|
||||
|
|
@ -4286,15 +4285,8 @@ static void bp_perf_event_destroy(struct perf_event *event)
|
|||
static const struct pmu *bp_perf_event_init(struct perf_event *bp)
|
||||
{
|
||||
int err;
|
||||
/*
|
||||
* The breakpoint is already filled if we haven't created the counter
|
||||
* through perf syscall
|
||||
* FIXME: manage to get trigerred to NULL if it comes from syscalls
|
||||
*/
|
||||
if (!bp->callback)
|
||||
err = register_perf_hw_breakpoint(bp);
|
||||
else
|
||||
err = __register_perf_hw_breakpoint(bp);
|
||||
|
||||
err = register_perf_hw_breakpoint(bp);
|
||||
if (err)
|
||||
return ERR_PTR(err);
|
||||
|
||||
|
|
@ -4308,6 +4300,7 @@ void perf_bp_event(struct perf_event *bp, void *data)
|
|||
struct perf_sample_data sample;
|
||||
struct pt_regs *regs = data;
|
||||
|
||||
sample.raw = NULL;
|
||||
sample.addr = bp->attr.bp_addr;
|
||||
|
||||
if (!perf_exclude_event(bp, regs))
|
||||
|
|
@ -4390,7 +4383,7 @@ perf_event_alloc(struct perf_event_attr *attr,
|
|||
struct perf_event_context *ctx,
|
||||
struct perf_event *group_leader,
|
||||
struct perf_event *parent_event,
|
||||
perf_callback_t callback,
|
||||
perf_overflow_handler_t overflow_handler,
|
||||
gfp_t gfpflags)
|
||||
{
|
||||
const struct pmu *pmu;
|
||||
|
|
@ -4433,10 +4426,10 @@ perf_event_alloc(struct perf_event_attr *attr,
|
|||
|
||||
event->state = PERF_EVENT_STATE_INACTIVE;
|
||||
|
||||
if (!callback && parent_event)
|
||||
callback = parent_event->callback;
|
||||
if (!overflow_handler && parent_event)
|
||||
overflow_handler = parent_event->overflow_handler;
|
||||
|
||||
event->callback = callback;
|
||||
event->overflow_handler = overflow_handler;
|
||||
|
||||
if (attr->disabled)
|
||||
event->state = PERF_EVENT_STATE_OFF;
|
||||
|
|
@ -4776,7 +4769,8 @@ SYSCALL_DEFINE5(perf_event_open,
|
|||
*/
|
||||
struct perf_event *
|
||||
perf_event_create_kernel_counter(struct perf_event_attr *attr, int cpu,
|
||||
pid_t pid, perf_callback_t callback)
|
||||
pid_t pid,
|
||||
perf_overflow_handler_t overflow_handler)
|
||||
{
|
||||
struct perf_event *event;
|
||||
struct perf_event_context *ctx;
|
||||
|
|
@ -4793,7 +4787,7 @@ perf_event_create_kernel_counter(struct perf_event_attr *attr, int cpu,
|
|||
}
|
||||
|
||||
event = perf_event_alloc(attr, cpu, ctx, NULL,
|
||||
NULL, callback, GFP_KERNEL);
|
||||
NULL, overflow_handler, GFP_KERNEL);
|
||||
if (IS_ERR(event)) {
|
||||
err = PTR_ERR(event);
|
||||
goto err_put_context;
|
||||
|
|
@ -5090,7 +5084,7 @@ void perf_event_free_task(struct task_struct *task)
|
|||
*/
|
||||
int perf_event_init_task(struct task_struct *child)
|
||||
{
|
||||
struct perf_event_context *child_ctx, *parent_ctx;
|
||||
struct perf_event_context *child_ctx = NULL, *parent_ctx;
|
||||
struct perf_event_context *cloned_ctx;
|
||||
struct perf_event *event;
|
||||
struct task_struct *parent = current;
|
||||
|
|
@ -5105,20 +5099,6 @@ int perf_event_init_task(struct task_struct *child)
|
|||
if (likely(!parent->perf_event_ctxp))
|
||||
return 0;
|
||||
|
||||
/*
|
||||
* This is executed from the parent task context, so inherit
|
||||
* events that have been marked for cloning.
|
||||
* First allocate and initialize a context for the child.
|
||||
*/
|
||||
|
||||
child_ctx = kmalloc(sizeof(struct perf_event_context), GFP_KERNEL);
|
||||
if (!child_ctx)
|
||||
return -ENOMEM;
|
||||
|
||||
__perf_event_init_context(child_ctx, child);
|
||||
child->perf_event_ctxp = child_ctx;
|
||||
get_task_struct(child);
|
||||
|
||||
/*
|
||||
* If the parent's context is a clone, pin it so it won't get
|
||||
* swapped under us.
|
||||
|
|
@ -5149,6 +5129,26 @@ int perf_event_init_task(struct task_struct *child)
|
|||
continue;
|
||||
}
|
||||
|
||||
if (!child->perf_event_ctxp) {
|
||||
/*
|
||||
* This is executed from the parent task context, so
|
||||
* inherit events that have been marked for cloning.
|
||||
* First allocate and initialize a context for the
|
||||
* child.
|
||||
*/
|
||||
|
||||
child_ctx = kzalloc(sizeof(struct perf_event_context),
|
||||
GFP_KERNEL);
|
||||
if (!child_ctx) {
|
||||
ret = -ENOMEM;
|
||||
goto exit;
|
||||
}
|
||||
|
||||
__perf_event_init_context(child_ctx, child);
|
||||
child->perf_event_ctxp = child_ctx;
|
||||
get_task_struct(child);
|
||||
}
|
||||
|
||||
ret = inherit_group(event, parent, parent_ctx,
|
||||
child, child_ctx);
|
||||
if (ret) {
|
||||
|
|
@ -5177,6 +5177,7 @@ int perf_event_init_task(struct task_struct *child)
|
|||
get_ctx(child_ctx->parent_ctx);
|
||||
}
|
||||
|
||||
exit:
|
||||
mutex_unlock(&parent_ctx->mutex);
|
||||
|
||||
perf_unpin_context(parent_ctx);
|
||||
|
|
|
|||
|
|
@ -606,23 +606,22 @@ static int create_trace_probe(int argc, char **argv)
|
|||
*/
|
||||
struct trace_probe *tp;
|
||||
int i, ret = 0;
|
||||
int is_return = 0;
|
||||
int is_return = 0, is_delete = 0;
|
||||
char *symbol = NULL, *event = NULL, *arg = NULL, *group = NULL;
|
||||
unsigned long offset = 0;
|
||||
void *addr = NULL;
|
||||
char buf[MAX_EVENT_NAME_LEN];
|
||||
|
||||
if (argc < 2) {
|
||||
pr_info("Probe point is not specified.\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/* argc must be >= 1 */
|
||||
if (argv[0][0] == 'p')
|
||||
is_return = 0;
|
||||
else if (argv[0][0] == 'r')
|
||||
is_return = 1;
|
||||
else if (argv[0][0] == '-')
|
||||
is_delete = 1;
|
||||
else {
|
||||
pr_info("Probe definition must be started with 'p' or 'r'.\n");
|
||||
pr_info("Probe definition must be started with 'p', 'r' or"
|
||||
" '-'.\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
|
|
@ -642,7 +641,29 @@ static int create_trace_probe(int argc, char **argv)
|
|||
return -EINVAL;
|
||||
}
|
||||
}
|
||||
if (!group)
|
||||
group = KPROBE_EVENT_SYSTEM;
|
||||
|
||||
if (is_delete) {
|
||||
if (!event) {
|
||||
pr_info("Delete command needs an event name.\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
tp = find_probe_event(event, group);
|
||||
if (!tp) {
|
||||
pr_info("Event %s/%s doesn't exist.\n", group, event);
|
||||
return -ENOENT;
|
||||
}
|
||||
/* delete an event */
|
||||
unregister_trace_probe(tp);
|
||||
free_trace_probe(tp);
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (argc < 2) {
|
||||
pr_info("Probe point is not specified.\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
if (isdigit(argv[1][0])) {
|
||||
if (is_return) {
|
||||
pr_info("Return probe point must be a symbol.\n");
|
||||
|
|
@ -671,8 +692,6 @@ static int create_trace_probe(int argc, char **argv)
|
|||
argc -= 2; argv += 2;
|
||||
|
||||
/* setup a probe */
|
||||
if (!group)
|
||||
group = KPROBE_EVENT_SYSTEM;
|
||||
if (!event) {
|
||||
/* Make a new event name */
|
||||
if (symbol)
|
||||
|
|
@ -1114,7 +1133,7 @@ static int kprobe_event_define_fields(struct ftrace_event_call *event_call)
|
|||
struct trace_probe *tp = (struct trace_probe *)event_call->data;
|
||||
|
||||
ret = trace_define_common_fields(event_call);
|
||||
if (!ret)
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
DEFINE_FIELD(unsigned long, ip, FIELD_STRING_IP, 0);
|
||||
|
|
@ -1132,7 +1151,7 @@ static int kretprobe_event_define_fields(struct ftrace_event_call *event_call)
|
|||
struct trace_probe *tp = (struct trace_probe *)event_call->data;
|
||||
|
||||
ret = trace_define_common_fields(event_call);
|
||||
if (!ret)
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
DEFINE_FIELD(unsigned long, func, FIELD_STRING_FUNC, 0);
|
||||
|
|
|
|||
|
|
@ -79,11 +79,12 @@ void ksym_collect_stats(unsigned long hbp_hit_addr)
|
|||
}
|
||||
#endif /* CONFIG_PROFILE_KSYM_TRACER */
|
||||
|
||||
void ksym_hbp_handler(struct perf_event *hbp, void *data)
|
||||
void ksym_hbp_handler(struct perf_event *hbp, int nmi,
|
||||
struct perf_sample_data *data,
|
||||
struct pt_regs *regs)
|
||||
{
|
||||
struct ring_buffer_event *event;
|
||||
struct ksym_trace_entry *entry;
|
||||
struct pt_regs *regs = data;
|
||||
struct ring_buffer *buffer;
|
||||
int pc;
|
||||
|
||||
|
|
|
|||
|
|
@ -41,7 +41,9 @@ module_param_string(ksym, ksym_name, KSYM_NAME_LEN, S_IRUGO);
|
|||
MODULE_PARM_DESC(ksym, "Kernel symbol to monitor; this module will report any"
|
||||
" write operations on the kernel symbol");
|
||||
|
||||
static void sample_hbp_handler(struct perf_event *temp, void *data)
|
||||
static void sample_hbp_handler(struct perf_event *bp, int nmi,
|
||||
struct perf_sample_data *data,
|
||||
struct pt_regs *regs)
|
||||
{
|
||||
printk(KERN_INFO "%s value is changed\n", ksym_name);
|
||||
dump_stack();
|
||||
|
|
@ -51,8 +53,9 @@ static void sample_hbp_handler(struct perf_event *temp, void *data)
|
|||
static int __init hw_break_module_init(void)
|
||||
{
|
||||
int ret;
|
||||
DEFINE_BREAKPOINT_ATTR(attr);
|
||||
struct perf_event_attr attr;
|
||||
|
||||
hw_breakpoint_init(&attr);
|
||||
attr.bp_addr = kallsyms_lookup_name(ksym_name);
|
||||
attr.bp_len = HW_BREAKPOINT_LEN_4;
|
||||
attr.bp_type = HW_BREAKPOINT_W | HW_BREAKPOINT_R;
|
||||
|
|
|
|||
|
|
@ -8,16 +8,16 @@ perf-kmem - Tool to trace/measure kernel memory(slab) properties
|
|||
SYNOPSIS
|
||||
--------
|
||||
[verse]
|
||||
'perf kmem' {record} [<options>]
|
||||
'perf kmem' {record|stat} [<options>]
|
||||
|
||||
DESCRIPTION
|
||||
-----------
|
||||
There's two variants of perf kmem:
|
||||
There are two variants of perf kmem:
|
||||
|
||||
'perf kmem record <command>' to record the kmem events
|
||||
of an arbitrary workload.
|
||||
|
||||
'perf kmem' to report kernel memory statistics.
|
||||
'perf kmem stat' to report kernel memory statistics.
|
||||
|
||||
OPTIONS
|
||||
-------
|
||||
|
|
@ -25,8 +25,11 @@ OPTIONS
|
|||
--input=<file>::
|
||||
Select the input file (default: perf.data)
|
||||
|
||||
--stat=<caller|alloc>::
|
||||
Select per callsite or per allocation statistics
|
||||
--caller::
|
||||
Show per-callsite statistics
|
||||
|
||||
--alloc::
|
||||
Show per-allocation statistics
|
||||
|
||||
-s <key[,key2...]>::
|
||||
--sort=<key[,key2...]>::
|
||||
|
|
|
|||
|
|
@ -8,10 +8,13 @@ perf-probe - Define new dynamic tracepoints
|
|||
SYNOPSIS
|
||||
--------
|
||||
[verse]
|
||||
'perf probe' [options] --add 'PROBE' [--add 'PROBE' ...]
|
||||
'perf probe' [options] --add='PROBE' [...]
|
||||
or
|
||||
'perf probe' [options] 'PROBE' ['PROBE' ...]
|
||||
|
||||
'perf probe' [options] PROBE
|
||||
or
|
||||
'perf probe' [options] --del='[GROUP:]EVENT' [...]
|
||||
or
|
||||
'perf probe' --list
|
||||
|
||||
DESCRIPTION
|
||||
-----------
|
||||
|
|
@ -31,8 +34,16 @@ OPTIONS
|
|||
Be more verbose (show parsed arguments, etc).
|
||||
|
||||
-a::
|
||||
--add::
|
||||
Define a probe point (see PROBE SYNTAX for detail)
|
||||
--add=::
|
||||
Define a probe event (see PROBE SYNTAX for detail).
|
||||
|
||||
-d::
|
||||
--del=::
|
||||
Delete a probe event.
|
||||
|
||||
-l::
|
||||
--list::
|
||||
List up current probe events.
|
||||
|
||||
PROBE SYNTAX
|
||||
------------
|
||||
|
|
|
|||
|
|
@ -19,7 +19,7 @@ static char const *input_name = "perf.data";
|
|||
static int force;
|
||||
|
||||
static const char *const buildid_list_usage[] = {
|
||||
"perf report [<options>]",
|
||||
"perf buildid-list [<options>]",
|
||||
NULL
|
||||
};
|
||||
|
||||
|
|
|
|||
|
|
@ -57,11 +57,6 @@ static struct rb_root root_caller_sorted;
|
|||
static unsigned long total_requested, total_allocated;
|
||||
static unsigned long nr_allocs, nr_cross_allocs;
|
||||
|
||||
struct raw_event_sample {
|
||||
u32 size;
|
||||
char data[0];
|
||||
};
|
||||
|
||||
#define PATH_SYS_NODE "/sys/devices/system/node"
|
||||
|
||||
static void init_cpunode_map(void)
|
||||
|
|
@ -201,7 +196,7 @@ static void insert_caller_stat(unsigned long call_site,
|
|||
}
|
||||
}
|
||||
|
||||
static void process_alloc_event(struct raw_event_sample *raw,
|
||||
static void process_alloc_event(void *data,
|
||||
struct event *event,
|
||||
int cpu,
|
||||
u64 timestamp __used,
|
||||
|
|
@ -214,10 +209,10 @@ static void process_alloc_event(struct raw_event_sample *raw,
|
|||
int bytes_alloc;
|
||||
int node1, node2;
|
||||
|
||||
ptr = raw_field_value(event, "ptr", raw->data);
|
||||
call_site = raw_field_value(event, "call_site", raw->data);
|
||||
bytes_req = raw_field_value(event, "bytes_req", raw->data);
|
||||
bytes_alloc = raw_field_value(event, "bytes_alloc", raw->data);
|
||||
ptr = raw_field_value(event, "ptr", data);
|
||||
call_site = raw_field_value(event, "call_site", data);
|
||||
bytes_req = raw_field_value(event, "bytes_req", data);
|
||||
bytes_alloc = raw_field_value(event, "bytes_alloc", data);
|
||||
|
||||
insert_alloc_stat(call_site, ptr, bytes_req, bytes_alloc, cpu);
|
||||
insert_caller_stat(call_site, bytes_req, bytes_alloc);
|
||||
|
|
@ -227,7 +222,7 @@ static void process_alloc_event(struct raw_event_sample *raw,
|
|||
|
||||
if (node) {
|
||||
node1 = cpunode_map[cpu];
|
||||
node2 = raw_field_value(event, "node", raw->data);
|
||||
node2 = raw_field_value(event, "node", data);
|
||||
if (node1 != node2)
|
||||
nr_cross_allocs++;
|
||||
}
|
||||
|
|
@ -262,7 +257,7 @@ static struct alloc_stat *search_alloc_stat(unsigned long ptr,
|
|||
return NULL;
|
||||
}
|
||||
|
||||
static void process_free_event(struct raw_event_sample *raw,
|
||||
static void process_free_event(void *data,
|
||||
struct event *event,
|
||||
int cpu,
|
||||
u64 timestamp __used,
|
||||
|
|
@ -271,7 +266,7 @@ static void process_free_event(struct raw_event_sample *raw,
|
|||
unsigned long ptr;
|
||||
struct alloc_stat *s_alloc, *s_caller;
|
||||
|
||||
ptr = raw_field_value(event, "ptr", raw->data);
|
||||
ptr = raw_field_value(event, "ptr", data);
|
||||
|
||||
s_alloc = search_alloc_stat(ptr, 0, &root_alloc_stat, ptr_cmp);
|
||||
if (!s_alloc)
|
||||
|
|
@ -289,66 +284,53 @@ static void process_free_event(struct raw_event_sample *raw,
|
|||
}
|
||||
|
||||
static void
|
||||
process_raw_event(event_t *raw_event __used, void *more_data,
|
||||
process_raw_event(event_t *raw_event __used, void *data,
|
||||
int cpu, u64 timestamp, struct thread *thread)
|
||||
{
|
||||
struct raw_event_sample *raw = more_data;
|
||||
struct event *event;
|
||||
int type;
|
||||
|
||||
type = trace_parse_common_type(raw->data);
|
||||
type = trace_parse_common_type(data);
|
||||
event = trace_find_event(type);
|
||||
|
||||
if (!strcmp(event->name, "kmalloc") ||
|
||||
!strcmp(event->name, "kmem_cache_alloc")) {
|
||||
process_alloc_event(raw, event, cpu, timestamp, thread, 0);
|
||||
process_alloc_event(data, event, cpu, timestamp, thread, 0);
|
||||
return;
|
||||
}
|
||||
|
||||
if (!strcmp(event->name, "kmalloc_node") ||
|
||||
!strcmp(event->name, "kmem_cache_alloc_node")) {
|
||||
process_alloc_event(raw, event, cpu, timestamp, thread, 1);
|
||||
process_alloc_event(data, event, cpu, timestamp, thread, 1);
|
||||
return;
|
||||
}
|
||||
|
||||
if (!strcmp(event->name, "kfree") ||
|
||||
!strcmp(event->name, "kmem_cache_free")) {
|
||||
process_free_event(raw, event, cpu, timestamp, thread);
|
||||
process_free_event(data, event, cpu, timestamp, thread);
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
static int process_sample_event(event_t *event)
|
||||
{
|
||||
u64 ip = event->ip.ip;
|
||||
u64 timestamp = -1;
|
||||
u32 cpu = -1;
|
||||
u64 period = 1;
|
||||
void *more_data = event->ip.__more_data;
|
||||
struct thread *thread = threads__findnew(event->ip.pid);
|
||||
struct sample_data data;
|
||||
struct thread *thread;
|
||||
|
||||
if (sample_type & PERF_SAMPLE_TIME) {
|
||||
timestamp = *(u64 *)more_data;
|
||||
more_data += sizeof(u64);
|
||||
}
|
||||
memset(&data, 0, sizeof(data));
|
||||
data.time = -1;
|
||||
data.cpu = -1;
|
||||
data.period = 1;
|
||||
|
||||
if (sample_type & PERF_SAMPLE_CPU) {
|
||||
cpu = *(u32 *)more_data;
|
||||
more_data += sizeof(u32);
|
||||
more_data += sizeof(u32); /* reserved */
|
||||
}
|
||||
|
||||
if (sample_type & PERF_SAMPLE_PERIOD) {
|
||||
period = *(u64 *)more_data;
|
||||
more_data += sizeof(u64);
|
||||
}
|
||||
event__parse_sample(event, sample_type, &data);
|
||||
|
||||
dump_printf("(IP, %d): %d/%d: %p period: %Ld\n",
|
||||
event->header.misc,
|
||||
event->ip.pid, event->ip.tid,
|
||||
(void *)(long)ip,
|
||||
(long long)period);
|
||||
data.pid, data.tid,
|
||||
(void *)(long)data.ip,
|
||||
(long long)data.period);
|
||||
|
||||
thread = threads__findnew(event->ip.pid);
|
||||
if (thread == NULL) {
|
||||
pr_debug("problem processing %d event, skipping it.\n",
|
||||
event->header.type);
|
||||
|
|
@ -357,7 +339,8 @@ static int process_sample_event(event_t *event)
|
|||
|
||||
dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
|
||||
|
||||
process_raw_event(event, more_data, cpu, timestamp, thread);
|
||||
process_raw_event(event, data.raw_data, data.cpu,
|
||||
data.time, thread);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -543,7 +526,7 @@ static int __cmd_kmem(void)
|
|||
}
|
||||
|
||||
static const char * const kmem_usage[] = {
|
||||
"perf kmem [<options>] {record}",
|
||||
"perf kmem [<options>] {record|stat}",
|
||||
NULL
|
||||
};
|
||||
|
||||
|
|
@ -703,18 +686,17 @@ static int parse_sort_opt(const struct option *opt __used,
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int parse_stat_opt(const struct option *opt __used,
|
||||
const char *arg, int unset __used)
|
||||
static int parse_caller_opt(const struct option *opt __used,
|
||||
const char *arg __used, int unset __used)
|
||||
{
|
||||
if (!arg)
|
||||
return -1;
|
||||
caller_flag = (alloc_flag + 1);
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (strcmp(arg, "alloc") == 0)
|
||||
alloc_flag = (caller_flag + 1);
|
||||
else if (strcmp(arg, "caller") == 0)
|
||||
caller_flag = (alloc_flag + 1);
|
||||
else
|
||||
return -1;
|
||||
static int parse_alloc_opt(const struct option *opt __used,
|
||||
const char *arg __used, int unset __used)
|
||||
{
|
||||
alloc_flag = (caller_flag + 1);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
@ -739,14 +721,17 @@ static int parse_line_opt(const struct option *opt __used,
|
|||
static const struct option kmem_options[] = {
|
||||
OPT_STRING('i', "input", &input_name, "file",
|
||||
"input file name"),
|
||||
OPT_CALLBACK(0, "stat", NULL, "<alloc>|<caller>",
|
||||
"stat selector, Pass 'alloc' or 'caller'.",
|
||||
parse_stat_opt),
|
||||
OPT_CALLBACK_NOOPT(0, "caller", NULL, NULL,
|
||||
"show per-callsite statistics",
|
||||
parse_caller_opt),
|
||||
OPT_CALLBACK_NOOPT(0, "alloc", NULL, NULL,
|
||||
"show per-allocation statistics",
|
||||
parse_alloc_opt),
|
||||
OPT_CALLBACK('s', "sort", NULL, "key[,key2...]",
|
||||
"sort by keys: ptr, call_site, bytes, hit, pingpong, frag",
|
||||
parse_sort_opt),
|
||||
OPT_CALLBACK('l', "line", NULL, "num",
|
||||
"show n lins",
|
||||
"show n lines",
|
||||
parse_line_opt),
|
||||
OPT_BOOLEAN(0, "raw-ip", &raw_ip, "show raw ip instead of symbol"),
|
||||
OPT_END()
|
||||
|
|
@ -790,18 +775,22 @@ int cmd_kmem(int argc, const char **argv, const char *prefix __used)
|
|||
|
||||
argc = parse_options(argc, argv, kmem_options, kmem_usage, 0);
|
||||
|
||||
if (argc && !strncmp(argv[0], "rec", 3))
|
||||
return __cmd_record(argc, argv);
|
||||
else if (argc)
|
||||
if (!argc)
|
||||
usage_with_options(kmem_usage, kmem_options);
|
||||
|
||||
if (list_empty(&caller_sort))
|
||||
setup_sorting(&caller_sort, default_sort_order);
|
||||
if (list_empty(&alloc_sort))
|
||||
setup_sorting(&alloc_sort, default_sort_order);
|
||||
if (!strncmp(argv[0], "rec", 3)) {
|
||||
return __cmd_record(argc, argv);
|
||||
} else if (!strcmp(argv[0], "stat")) {
|
||||
setup_cpunode_map();
|
||||
|
||||
setup_cpunode_map();
|
||||
if (list_empty(&caller_sort))
|
||||
setup_sorting(&caller_sort, default_sort_order);
|
||||
if (list_empty(&alloc_sort))
|
||||
setup_sorting(&alloc_sort, default_sort_order);
|
||||
|
||||
return __cmd_kmem();
|
||||
return __cmd_kmem();
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -35,6 +35,7 @@
|
|||
#include "perf.h"
|
||||
#include "builtin.h"
|
||||
#include "util/util.h"
|
||||
#include "util/strlist.h"
|
||||
#include "util/event.h"
|
||||
#include "util/debug.h"
|
||||
#include "util/parse-options.h"
|
||||
|
|
@ -43,11 +44,12 @@
|
|||
#include "util/probe-event.h"
|
||||
|
||||
/* Default vmlinux search paths */
|
||||
#define NR_SEARCH_PATH 3
|
||||
#define NR_SEARCH_PATH 4
|
||||
const char *default_search_path[NR_SEARCH_PATH] = {
|
||||
"/lib/modules/%s/build/vmlinux", /* Custom build kernel */
|
||||
"/usr/lib/debug/lib/modules/%s/vmlinux", /* Red Hat debuginfo */
|
||||
"/boot/vmlinux-debug-%s", /* Ubuntu */
|
||||
"./vmlinux", /* CWD */
|
||||
};
|
||||
|
||||
#define MAX_PATH_LEN 256
|
||||
|
|
@ -60,6 +62,7 @@ static struct {
|
|||
int need_dwarf;
|
||||
int nr_probe;
|
||||
struct probe_point probes[MAX_PROBES];
|
||||
struct strlist *dellist;
|
||||
} session;
|
||||
|
||||
static bool listing;
|
||||
|
|
@ -79,6 +82,25 @@ static void parse_probe_event(const char *str)
|
|||
pr_debug("%d arguments\n", pp->nr_args);
|
||||
}
|
||||
|
||||
static void parse_probe_event_argv(int argc, const char **argv)
|
||||
{
|
||||
int i, len;
|
||||
char *buf;
|
||||
|
||||
/* Bind up rest arguments */
|
||||
len = 0;
|
||||
for (i = 0; i < argc; i++)
|
||||
len += strlen(argv[i]) + 1;
|
||||
buf = zalloc(len + 1);
|
||||
if (!buf)
|
||||
die("Failed to allocate memory for binding arguments.");
|
||||
len = 0;
|
||||
for (i = 0; i < argc; i++)
|
||||
len += sprintf(&buf[len], "%s ", argv[i]);
|
||||
parse_probe_event(buf);
|
||||
free(buf);
|
||||
}
|
||||
|
||||
static int opt_add_probe_event(const struct option *opt __used,
|
||||
const char *str, int unset __used)
|
||||
{
|
||||
|
|
@ -87,6 +109,17 @@ static int opt_add_probe_event(const struct option *opt __used,
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int opt_del_probe_event(const struct option *opt __used,
|
||||
const char *str, int unset __used)
|
||||
{
|
||||
if (str) {
|
||||
if (!session.dellist)
|
||||
session.dellist = strlist__new(true, NULL);
|
||||
strlist__add(session.dellist, str);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
#ifndef NO_LIBDWARF
|
||||
static int open_default_vmlinux(void)
|
||||
{
|
||||
|
|
@ -121,6 +154,7 @@ static int open_default_vmlinux(void)
|
|||
static const char * const probe_usage[] = {
|
||||
"perf probe [<options>] 'PROBEDEF' ['PROBEDEF' ...]",
|
||||
"perf probe [<options>] --add 'PROBEDEF' [--add 'PROBEDEF' ...]",
|
||||
"perf probe [<options>] --del '[GROUP:]EVENT' ...",
|
||||
"perf probe --list",
|
||||
NULL
|
||||
};
|
||||
|
|
@ -132,7 +166,9 @@ static const struct option options[] = {
|
|||
OPT_STRING('k', "vmlinux", &session.vmlinux, "file",
|
||||
"vmlinux/module pathname"),
|
||||
#endif
|
||||
OPT_BOOLEAN('l', "list", &listing, "list up current probes"),
|
||||
OPT_BOOLEAN('l', "list", &listing, "list up current probe events"),
|
||||
OPT_CALLBACK('d', "del", NULL, "[GROUP:]EVENT", "delete a probe event.",
|
||||
opt_del_probe_event),
|
||||
OPT_CALLBACK('a', "add", NULL,
|
||||
#ifdef NO_LIBDWARF
|
||||
"FUNC[+OFFS|%return] [ARG ...]",
|
||||
|
|
@ -160,7 +196,7 @@ static const struct option options[] = {
|
|||
|
||||
int cmd_probe(int argc, const char **argv, const char *prefix __used)
|
||||
{
|
||||
int i, j, ret;
|
||||
int i, ret;
|
||||
#ifndef NO_LIBDWARF
|
||||
int fd;
|
||||
#endif
|
||||
|
|
@ -168,40 +204,52 @@ int cmd_probe(int argc, const char **argv, const char *prefix __used)
|
|||
|
||||
argc = parse_options(argc, argv, options, probe_usage,
|
||||
PARSE_OPT_STOP_AT_NON_OPTION);
|
||||
for (i = 0; i < argc; i++)
|
||||
parse_probe_event(argv[i]);
|
||||
if (argc > 0)
|
||||
parse_probe_event_argv(argc, argv);
|
||||
|
||||
if ((session.nr_probe == 0 && !listing) ||
|
||||
(session.nr_probe != 0 && listing))
|
||||
if ((session.nr_probe == 0 && !session.dellist && !listing))
|
||||
usage_with_options(probe_usage, options);
|
||||
|
||||
if (listing) {
|
||||
if (session.nr_probe != 0 || session.dellist) {
|
||||
pr_warning(" Error: Don't use --list with"
|
||||
" --add/--del.\n");
|
||||
usage_with_options(probe_usage, options);
|
||||
}
|
||||
show_perf_probe_events();
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (session.dellist) {
|
||||
del_trace_kprobe_events(session.dellist);
|
||||
strlist__delete(session.dellist);
|
||||
if (session.nr_probe == 0)
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (session.need_dwarf)
|
||||
#ifdef NO_LIBDWARF
|
||||
die("Debuginfo-analysis is not supported");
|
||||
#else /* !NO_LIBDWARF */
|
||||
pr_debug("Some probes require debuginfo.\n");
|
||||
|
||||
if (session.vmlinux)
|
||||
if (session.vmlinux) {
|
||||
pr_debug("Try to open %s.", session.vmlinux);
|
||||
fd = open(session.vmlinux, O_RDONLY);
|
||||
else
|
||||
} else
|
||||
fd = open_default_vmlinux();
|
||||
if (fd < 0) {
|
||||
if (session.need_dwarf)
|
||||
die("Could not open vmlinux/module file.");
|
||||
die("Could not open debuginfo file.");
|
||||
|
||||
pr_warning("Could not open vmlinux/module file."
|
||||
" Try to use symbols.\n");
|
||||
pr_debug("Could not open vmlinux/module file."
|
||||
" Try to use symbols.\n");
|
||||
goto end_dwarf;
|
||||
}
|
||||
|
||||
/* Searching probe points */
|
||||
for (j = 0; j < session.nr_probe; j++) {
|
||||
pp = &session.probes[j];
|
||||
for (i = 0; i < session.nr_probe; i++) {
|
||||
pp = &session.probes[i];
|
||||
if (pp->found)
|
||||
continue;
|
||||
|
||||
|
|
@ -223,8 +271,8 @@ int cmd_probe(int argc, const char **argv, const char *prefix __used)
|
|||
#endif /* !NO_LIBDWARF */
|
||||
|
||||
/* Synthesize probes without dwarf */
|
||||
for (j = 0; j < session.nr_probe; j++) {
|
||||
pp = &session.probes[j];
|
||||
for (i = 0; i < session.nr_probe; i++) {
|
||||
pp = &session.probes[i];
|
||||
if (pp->found) /* This probe is already found. */
|
||||
continue;
|
||||
|
||||
|
|
|
|||
|
|
@ -605,44 +605,41 @@ static int validate_chain(struct ip_callchain *chain, event_t *event)
|
|||
|
||||
static int process_sample_event(event_t *event)
|
||||
{
|
||||
u64 ip = event->ip.ip;
|
||||
u64 period = 1;
|
||||
void *more_data = event->ip.__more_data;
|
||||
struct ip_callchain *chain = NULL;
|
||||
struct sample_data data;
|
||||
int cpumode;
|
||||
struct addr_location al;
|
||||
struct thread *thread = threads__findnew(event->ip.pid);
|
||||
struct thread *thread;
|
||||
|
||||
if (sample_type & PERF_SAMPLE_PERIOD) {
|
||||
period = *(u64 *)more_data;
|
||||
more_data += sizeof(u64);
|
||||
}
|
||||
memset(&data, 0, sizeof(data));
|
||||
data.period = 1;
|
||||
|
||||
event__parse_sample(event, sample_type, &data);
|
||||
|
||||
dump_printf("(IP, %d): %d/%d: %p period: %Ld\n",
|
||||
event->header.misc,
|
||||
event->ip.pid, event->ip.tid,
|
||||
(void *)(long)ip,
|
||||
(long long)period);
|
||||
data.pid, data.tid,
|
||||
(void *)(long)data.ip,
|
||||
(long long)data.period);
|
||||
|
||||
if (sample_type & PERF_SAMPLE_CALLCHAIN) {
|
||||
unsigned int i;
|
||||
|
||||
chain = (void *)more_data;
|
||||
dump_printf("... chain: nr:%Lu\n", data.callchain->nr);
|
||||
|
||||
dump_printf("... chain: nr:%Lu\n", chain->nr);
|
||||
|
||||
if (validate_chain(chain, event) < 0) {
|
||||
if (validate_chain(data.callchain, event) < 0) {
|
||||
pr_debug("call-chain problem with event, "
|
||||
"skipping it.\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (dump_trace) {
|
||||
for (i = 0; i < chain->nr; i++)
|
||||
dump_printf("..... %2d: %016Lx\n", i, chain->ips[i]);
|
||||
for (i = 0; i < data.callchain->nr; i++)
|
||||
dump_printf("..... %2d: %016Lx\n",
|
||||
i, data.callchain->ips[i]);
|
||||
}
|
||||
}
|
||||
|
||||
thread = threads__findnew(data.pid);
|
||||
if (thread == NULL) {
|
||||
pr_debug("problem processing %d event, skipping it.\n",
|
||||
event->header.type);
|
||||
|
|
@ -657,7 +654,7 @@ static int process_sample_event(event_t *event)
|
|||
cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
|
||||
|
||||
thread__find_addr_location(thread, cpumode,
|
||||
MAP__FUNCTION, ip, &al, NULL);
|
||||
MAP__FUNCTION, data.ip, &al, NULL);
|
||||
/*
|
||||
* We have to do this here as we may have a dso with no symbol hit that
|
||||
* has a name longer than the ones with symbols sampled.
|
||||
|
|
@ -675,12 +672,12 @@ static int process_sample_event(event_t *event)
|
|||
if (sym_list && al.sym && !strlist__has_entry(sym_list, al.sym->name))
|
||||
return 0;
|
||||
|
||||
if (hist_entry__add(&al, chain, period)) {
|
||||
if (hist_entry__add(&al, data.callchain, data.period)) {
|
||||
pr_debug("problem incrementing symbol count, skipping event\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
event__stats.total += period;
|
||||
event__stats.total += data.period;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -13,7 +13,6 @@
|
|||
#include "util/debug.h"
|
||||
#include "util/data_map.h"
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <sys/prctl.h>
|
||||
|
||||
#include <semaphore.h>
|
||||
|
|
@ -141,6 +140,7 @@ struct work_atoms {
|
|||
struct thread *thread;
|
||||
struct rb_node node;
|
||||
u64 max_lat;
|
||||
u64 max_lat_at;
|
||||
u64 total_lat;
|
||||
u64 nb_atoms;
|
||||
u64 total_runtime;
|
||||
|
|
@ -414,34 +414,33 @@ static u64 get_cpu_usage_nsec_parent(void)
|
|||
return sum;
|
||||
}
|
||||
|
||||
static u64 get_cpu_usage_nsec_self(void)
|
||||
static int self_open_counters(void)
|
||||
{
|
||||
char filename [] = "/proc/1234567890/sched";
|
||||
unsigned long msecs, nsecs;
|
||||
char *line = NULL;
|
||||
u64 total = 0;
|
||||
size_t len = 0;
|
||||
ssize_t chars;
|
||||
FILE *file;
|
||||
struct perf_event_attr attr;
|
||||
int fd;
|
||||
|
||||
memset(&attr, 0, sizeof(attr));
|
||||
|
||||
attr.type = PERF_TYPE_SOFTWARE;
|
||||
attr.config = PERF_COUNT_SW_TASK_CLOCK;
|
||||
|
||||
fd = sys_perf_event_open(&attr, 0, -1, -1, 0);
|
||||
|
||||
if (fd < 0)
|
||||
die("Error: sys_perf_event_open() syscall returned"
|
||||
"with %d (%s)\n", fd, strerror(errno));
|
||||
return fd;
|
||||
}
|
||||
|
||||
static u64 get_cpu_usage_nsec_self(int fd)
|
||||
{
|
||||
u64 runtime;
|
||||
int ret;
|
||||
|
||||
sprintf(filename, "/proc/%d/sched", getpid());
|
||||
file = fopen(filename, "r");
|
||||
BUG_ON(!file);
|
||||
ret = read(fd, &runtime, sizeof(runtime));
|
||||
BUG_ON(ret != sizeof(runtime));
|
||||
|
||||
while ((chars = getline(&line, &len, file)) != -1) {
|
||||
ret = sscanf(line, "se.sum_exec_runtime : %ld.%06ld\n",
|
||||
&msecs, &nsecs);
|
||||
if (ret == 2) {
|
||||
total = msecs*1e6 + nsecs;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (line)
|
||||
free(line);
|
||||
fclose(file);
|
||||
|
||||
return total;
|
||||
return runtime;
|
||||
}
|
||||
|
||||
static void *thread_func(void *ctx)
|
||||
|
|
@ -450,9 +449,11 @@ static void *thread_func(void *ctx)
|
|||
u64 cpu_usage_0, cpu_usage_1;
|
||||
unsigned long i, ret;
|
||||
char comm2[22];
|
||||
int fd;
|
||||
|
||||
sprintf(comm2, ":%s", this_task->comm);
|
||||
prctl(PR_SET_NAME, comm2);
|
||||
fd = self_open_counters();
|
||||
|
||||
again:
|
||||
ret = sem_post(&this_task->ready_for_work);
|
||||
|
|
@ -462,16 +463,15 @@ static void *thread_func(void *ctx)
|
|||
ret = pthread_mutex_unlock(&start_work_mutex);
|
||||
BUG_ON(ret);
|
||||
|
||||
cpu_usage_0 = get_cpu_usage_nsec_self();
|
||||
cpu_usage_0 = get_cpu_usage_nsec_self(fd);
|
||||
|
||||
for (i = 0; i < this_task->nr_events; i++) {
|
||||
this_task->curr_event = i;
|
||||
process_sched_event(this_task, this_task->atoms[i]);
|
||||
}
|
||||
|
||||
cpu_usage_1 = get_cpu_usage_nsec_self();
|
||||
cpu_usage_1 = get_cpu_usage_nsec_self(fd);
|
||||
this_task->cpu_usage = cpu_usage_1 - cpu_usage_0;
|
||||
|
||||
ret = sem_post(&this_task->work_done_sem);
|
||||
BUG_ON(ret);
|
||||
|
||||
|
|
@ -628,11 +628,6 @@ static void test_calibrations(void)
|
|||
printf("the sleep test took %Ld nsecs\n", T1-T0);
|
||||
}
|
||||
|
||||
struct raw_event_sample {
|
||||
u32 size;
|
||||
char data[0];
|
||||
};
|
||||
|
||||
#define FILL_FIELD(ptr, field, event, data) \
|
||||
ptr.field = (typeof(ptr.field)) raw_field_value(event, #field, data)
|
||||
|
||||
|
|
@ -1019,8 +1014,10 @@ add_sched_in_event(struct work_atoms *atoms, u64 timestamp)
|
|||
|
||||
delta = atom->sched_in_time - atom->wake_up_time;
|
||||
atoms->total_lat += delta;
|
||||
if (delta > atoms->max_lat)
|
||||
if (delta > atoms->max_lat) {
|
||||
atoms->max_lat = delta;
|
||||
atoms->max_lat_at = timestamp;
|
||||
}
|
||||
atoms->nb_atoms++;
|
||||
}
|
||||
|
||||
|
|
@ -1216,10 +1213,11 @@ static void output_lat_thread(struct work_atoms *work_list)
|
|||
|
||||
avg = work_list->total_lat / work_list->nb_atoms;
|
||||
|
||||
printf("|%11.3f ms |%9llu | avg:%9.3f ms | max:%9.3f ms |\n",
|
||||
printf("|%11.3f ms |%9llu | avg:%9.3f ms | max:%9.3f ms | max at: %9.6f s\n",
|
||||
(double)work_list->total_runtime / 1e6,
|
||||
work_list->nb_atoms, (double)avg / 1e6,
|
||||
(double)work_list->max_lat / 1e6);
|
||||
(double)work_list->max_lat / 1e6,
|
||||
(double)work_list->max_lat_at / 1e9);
|
||||
}
|
||||
|
||||
static int pid_cmp(struct work_atoms *l, struct work_atoms *r)
|
||||
|
|
@ -1356,7 +1354,7 @@ static void sort_lat(void)
|
|||
static struct trace_sched_handler *trace_handler;
|
||||
|
||||
static void
|
||||
process_sched_wakeup_event(struct raw_event_sample *raw,
|
||||
process_sched_wakeup_event(void *data,
|
||||
struct event *event,
|
||||
int cpu __used,
|
||||
u64 timestamp __used,
|
||||
|
|
@ -1364,13 +1362,13 @@ process_sched_wakeup_event(struct raw_event_sample *raw,
|
|||
{
|
||||
struct trace_wakeup_event wakeup_event;
|
||||
|
||||
FILL_COMMON_FIELDS(wakeup_event, event, raw->data);
|
||||
FILL_COMMON_FIELDS(wakeup_event, event, data);
|
||||
|
||||
FILL_ARRAY(wakeup_event, comm, event, raw->data);
|
||||
FILL_FIELD(wakeup_event, pid, event, raw->data);
|
||||
FILL_FIELD(wakeup_event, prio, event, raw->data);
|
||||
FILL_FIELD(wakeup_event, success, event, raw->data);
|
||||
FILL_FIELD(wakeup_event, cpu, event, raw->data);
|
||||
FILL_ARRAY(wakeup_event, comm, event, data);
|
||||
FILL_FIELD(wakeup_event, pid, event, data);
|
||||
FILL_FIELD(wakeup_event, prio, event, data);
|
||||
FILL_FIELD(wakeup_event, success, event, data);
|
||||
FILL_FIELD(wakeup_event, cpu, event, data);
|
||||
|
||||
if (trace_handler->wakeup_event)
|
||||
trace_handler->wakeup_event(&wakeup_event, event, cpu, timestamp, thread);
|
||||
|
|
@ -1469,7 +1467,7 @@ map_switch_event(struct trace_switch_event *switch_event,
|
|||
|
||||
|
||||
static void
|
||||
process_sched_switch_event(struct raw_event_sample *raw,
|
||||
process_sched_switch_event(void *data,
|
||||
struct event *event,
|
||||
int this_cpu,
|
||||
u64 timestamp __used,
|
||||
|
|
@ -1477,15 +1475,15 @@ process_sched_switch_event(struct raw_event_sample *raw,
|
|||
{
|
||||
struct trace_switch_event switch_event;
|
||||
|
||||
FILL_COMMON_FIELDS(switch_event, event, raw->data);
|
||||
FILL_COMMON_FIELDS(switch_event, event, data);
|
||||
|
||||
FILL_ARRAY(switch_event, prev_comm, event, raw->data);
|
||||
FILL_FIELD(switch_event, prev_pid, event, raw->data);
|
||||
FILL_FIELD(switch_event, prev_prio, event, raw->data);
|
||||
FILL_FIELD(switch_event, prev_state, event, raw->data);
|
||||
FILL_ARRAY(switch_event, next_comm, event, raw->data);
|
||||
FILL_FIELD(switch_event, next_pid, event, raw->data);
|
||||
FILL_FIELD(switch_event, next_prio, event, raw->data);
|
||||
FILL_ARRAY(switch_event, prev_comm, event, data);
|
||||
FILL_FIELD(switch_event, prev_pid, event, data);
|
||||
FILL_FIELD(switch_event, prev_prio, event, data);
|
||||
FILL_FIELD(switch_event, prev_state, event, data);
|
||||
FILL_ARRAY(switch_event, next_comm, event, data);
|
||||
FILL_FIELD(switch_event, next_pid, event, data);
|
||||
FILL_FIELD(switch_event, next_prio, event, data);
|
||||
|
||||
if (curr_pid[this_cpu] != (u32)-1) {
|
||||
/*
|
||||
|
|
@ -1502,7 +1500,7 @@ process_sched_switch_event(struct raw_event_sample *raw,
|
|||
}
|
||||
|
||||
static void
|
||||
process_sched_runtime_event(struct raw_event_sample *raw,
|
||||
process_sched_runtime_event(void *data,
|
||||
struct event *event,
|
||||
int cpu __used,
|
||||
u64 timestamp __used,
|
||||
|
|
@ -1510,17 +1508,17 @@ process_sched_runtime_event(struct raw_event_sample *raw,
|
|||
{
|
||||
struct trace_runtime_event runtime_event;
|
||||
|
||||
FILL_ARRAY(runtime_event, comm, event, raw->data);
|
||||
FILL_FIELD(runtime_event, pid, event, raw->data);
|
||||
FILL_FIELD(runtime_event, runtime, event, raw->data);
|
||||
FILL_FIELD(runtime_event, vruntime, event, raw->data);
|
||||
FILL_ARRAY(runtime_event, comm, event, data);
|
||||
FILL_FIELD(runtime_event, pid, event, data);
|
||||
FILL_FIELD(runtime_event, runtime, event, data);
|
||||
FILL_FIELD(runtime_event, vruntime, event, data);
|
||||
|
||||
if (trace_handler->runtime_event)
|
||||
trace_handler->runtime_event(&runtime_event, event, cpu, timestamp, thread);
|
||||
}
|
||||
|
||||
static void
|
||||
process_sched_fork_event(struct raw_event_sample *raw,
|
||||
process_sched_fork_event(void *data,
|
||||
struct event *event,
|
||||
int cpu __used,
|
||||
u64 timestamp __used,
|
||||
|
|
@ -1528,12 +1526,12 @@ process_sched_fork_event(struct raw_event_sample *raw,
|
|||
{
|
||||
struct trace_fork_event fork_event;
|
||||
|
||||
FILL_COMMON_FIELDS(fork_event, event, raw->data);
|
||||
FILL_COMMON_FIELDS(fork_event, event, data);
|
||||
|
||||
FILL_ARRAY(fork_event, parent_comm, event, raw->data);
|
||||
FILL_FIELD(fork_event, parent_pid, event, raw->data);
|
||||
FILL_ARRAY(fork_event, child_comm, event, raw->data);
|
||||
FILL_FIELD(fork_event, child_pid, event, raw->data);
|
||||
FILL_ARRAY(fork_event, parent_comm, event, data);
|
||||
FILL_FIELD(fork_event, parent_pid, event, data);
|
||||
FILL_ARRAY(fork_event, child_comm, event, data);
|
||||
FILL_FIELD(fork_event, child_pid, event, data);
|
||||
|
||||
if (trace_handler->fork_event)
|
||||
trace_handler->fork_event(&fork_event, event, cpu, timestamp, thread);
|
||||
|
|
@ -1550,7 +1548,7 @@ process_sched_exit_event(struct event *event,
|
|||
}
|
||||
|
||||
static void
|
||||
process_sched_migrate_task_event(struct raw_event_sample *raw,
|
||||
process_sched_migrate_task_event(void *data,
|
||||
struct event *event,
|
||||
int cpu __used,
|
||||
u64 timestamp __used,
|
||||
|
|
@ -1558,80 +1556,66 @@ process_sched_migrate_task_event(struct raw_event_sample *raw,
|
|||
{
|
||||
struct trace_migrate_task_event migrate_task_event;
|
||||
|
||||
FILL_COMMON_FIELDS(migrate_task_event, event, raw->data);
|
||||
FILL_COMMON_FIELDS(migrate_task_event, event, data);
|
||||
|
||||
FILL_ARRAY(migrate_task_event, comm, event, raw->data);
|
||||
FILL_FIELD(migrate_task_event, pid, event, raw->data);
|
||||
FILL_FIELD(migrate_task_event, prio, event, raw->data);
|
||||
FILL_FIELD(migrate_task_event, cpu, event, raw->data);
|
||||
FILL_ARRAY(migrate_task_event, comm, event, data);
|
||||
FILL_FIELD(migrate_task_event, pid, event, data);
|
||||
FILL_FIELD(migrate_task_event, prio, event, data);
|
||||
FILL_FIELD(migrate_task_event, cpu, event, data);
|
||||
|
||||
if (trace_handler->migrate_task_event)
|
||||
trace_handler->migrate_task_event(&migrate_task_event, event, cpu, timestamp, thread);
|
||||
}
|
||||
|
||||
static void
|
||||
process_raw_event(event_t *raw_event __used, void *more_data,
|
||||
process_raw_event(event_t *raw_event __used, void *data,
|
||||
int cpu, u64 timestamp, struct thread *thread)
|
||||
{
|
||||
struct raw_event_sample *raw = more_data;
|
||||
struct event *event;
|
||||
int type;
|
||||
|
||||
type = trace_parse_common_type(raw->data);
|
||||
|
||||
type = trace_parse_common_type(data);
|
||||
event = trace_find_event(type);
|
||||
|
||||
if (!strcmp(event->name, "sched_switch"))
|
||||
process_sched_switch_event(raw, event, cpu, timestamp, thread);
|
||||
process_sched_switch_event(data, event, cpu, timestamp, thread);
|
||||
if (!strcmp(event->name, "sched_stat_runtime"))
|
||||
process_sched_runtime_event(raw, event, cpu, timestamp, thread);
|
||||
process_sched_runtime_event(data, event, cpu, timestamp, thread);
|
||||
if (!strcmp(event->name, "sched_wakeup"))
|
||||
process_sched_wakeup_event(raw, event, cpu, timestamp, thread);
|
||||
process_sched_wakeup_event(data, event, cpu, timestamp, thread);
|
||||
if (!strcmp(event->name, "sched_wakeup_new"))
|
||||
process_sched_wakeup_event(raw, event, cpu, timestamp, thread);
|
||||
process_sched_wakeup_event(data, event, cpu, timestamp, thread);
|
||||
if (!strcmp(event->name, "sched_process_fork"))
|
||||
process_sched_fork_event(raw, event, cpu, timestamp, thread);
|
||||
process_sched_fork_event(data, event, cpu, timestamp, thread);
|
||||
if (!strcmp(event->name, "sched_process_exit"))
|
||||
process_sched_exit_event(event, cpu, timestamp, thread);
|
||||
if (!strcmp(event->name, "sched_migrate_task"))
|
||||
process_sched_migrate_task_event(raw, event, cpu, timestamp, thread);
|
||||
process_sched_migrate_task_event(data, event, cpu, timestamp, thread);
|
||||
}
|
||||
|
||||
static int process_sample_event(event_t *event)
|
||||
{
|
||||
struct sample_data data;
|
||||
struct thread *thread;
|
||||
u64 ip = event->ip.ip;
|
||||
u64 timestamp = -1;
|
||||
u32 cpu = -1;
|
||||
u64 period = 1;
|
||||
void *more_data = event->ip.__more_data;
|
||||
|
||||
if (!(sample_type & PERF_SAMPLE_RAW))
|
||||
return 0;
|
||||
|
||||
thread = threads__findnew(event->ip.pid);
|
||||
memset(&data, 0, sizeof(data));
|
||||
data.time = -1;
|
||||
data.cpu = -1;
|
||||
data.period = -1;
|
||||
|
||||
if (sample_type & PERF_SAMPLE_TIME) {
|
||||
timestamp = *(u64 *)more_data;
|
||||
more_data += sizeof(u64);
|
||||
}
|
||||
|
||||
if (sample_type & PERF_SAMPLE_CPU) {
|
||||
cpu = *(u32 *)more_data;
|
||||
more_data += sizeof(u32);
|
||||
more_data += sizeof(u32); /* reserved */
|
||||
}
|
||||
|
||||
if (sample_type & PERF_SAMPLE_PERIOD) {
|
||||
period = *(u64 *)more_data;
|
||||
more_data += sizeof(u64);
|
||||
}
|
||||
event__parse_sample(event, sample_type, &data);
|
||||
|
||||
dump_printf("(IP, %d): %d/%d: %p period: %Ld\n",
|
||||
event->header.misc,
|
||||
event->ip.pid, event->ip.tid,
|
||||
(void *)(long)ip,
|
||||
(long long)period);
|
||||
data.pid, data.tid,
|
||||
(void *)(long)data.ip,
|
||||
(long long)data.period);
|
||||
|
||||
thread = threads__findnew(data.pid);
|
||||
if (thread == NULL) {
|
||||
pr_debug("problem processing %d event, skipping it.\n",
|
||||
event->header.type);
|
||||
|
|
@ -1640,10 +1624,10 @@ static int process_sample_event(event_t *event)
|
|||
|
||||
dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
|
||||
|
||||
if (profile_cpu != -1 && profile_cpu != (int) cpu)
|
||||
if (profile_cpu != -1 && profile_cpu != (int)data.cpu)
|
||||
return 0;
|
||||
|
||||
process_raw_event(event, more_data, cpu, timestamp, thread);
|
||||
process_raw_event(event, data.raw_data, data.cpu, data.time, thread);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -1724,9 +1708,9 @@ static void __cmd_lat(void)
|
|||
read_events();
|
||||
sort_lat();
|
||||
|
||||
printf("\n -----------------------------------------------------------------------------------------\n");
|
||||
printf(" Task | Runtime ms | Switches | Average delay ms | Maximum delay ms |\n");
|
||||
printf(" -----------------------------------------------------------------------------------------\n");
|
||||
printf("\n ---------------------------------------------------------------------------------------------------------------\n");
|
||||
printf(" Task | Runtime ms | Switches | Average delay ms | Maximum delay ms | Maximum delay at |\n");
|
||||
printf(" ---------------------------------------------------------------------------------------------------------------\n");
|
||||
|
||||
next = rb_first(&sorted_atom_root);
|
||||
|
||||
|
|
@ -1902,13 +1886,18 @@ static int __cmd_record(int argc, const char **argv)
|
|||
|
||||
int cmd_sched(int argc, const char **argv, const char *prefix __used)
|
||||
{
|
||||
symbol__init(0);
|
||||
|
||||
argc = parse_options(argc, argv, sched_options, sched_usage,
|
||||
PARSE_OPT_STOP_AT_NON_OPTION);
|
||||
if (!argc)
|
||||
usage_with_options(sched_usage, sched_options);
|
||||
|
||||
/*
|
||||
* Aliased to 'perf trace' for now:
|
||||
*/
|
||||
if (!strcmp(argv[0], "trace"))
|
||||
return cmd_trace(argc, argv, prefix);
|
||||
|
||||
symbol__init(0);
|
||||
if (!strncmp(argv[0], "rec", 3)) {
|
||||
return __cmd_record(argc, argv);
|
||||
} else if (!strncmp(argv[0], "lat", 3)) {
|
||||
|
|
@ -1932,11 +1921,6 @@ int cmd_sched(int argc, const char **argv, const char *prefix __used)
|
|||
usage_with_options(replay_usage, replay_options);
|
||||
}
|
||||
__cmd_replay();
|
||||
} else if (!strcmp(argv[0], "trace")) {
|
||||
/*
|
||||
* Aliased to 'perf trace' for now:
|
||||
*/
|
||||
return cmd_trace(argc, argv, prefix);
|
||||
} else {
|
||||
usage_with_options(sched_usage, sched_options);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -302,12 +302,11 @@ process_exit_event(event_t *event)
|
|||
}
|
||||
|
||||
struct trace_entry {
|
||||
u32 size;
|
||||
unsigned short type;
|
||||
unsigned char flags;
|
||||
unsigned char preempt_count;
|
||||
int pid;
|
||||
int tgid;
|
||||
int lock_depth;
|
||||
};
|
||||
|
||||
struct power_entry {
|
||||
|
|
@ -484,43 +483,22 @@ static void sched_switch(int cpu, u64 timestamp, struct trace_entry *te)
|
|||
static int
|
||||
process_sample_event(event_t *event)
|
||||
{
|
||||
int cursor = 0;
|
||||
u64 addr = 0;
|
||||
u64 stamp = 0;
|
||||
u32 cpu = 0;
|
||||
u32 pid = 0;
|
||||
struct sample_data data;
|
||||
struct trace_entry *te;
|
||||
|
||||
if (sample_type & PERF_SAMPLE_IP)
|
||||
cursor++;
|
||||
memset(&data, 0, sizeof(data));
|
||||
|
||||
event__parse_sample(event, sample_type, &data);
|
||||
|
||||
if (sample_type & PERF_SAMPLE_TID) {
|
||||
pid = event->sample.array[cursor]>>32;
|
||||
cursor++;
|
||||
}
|
||||
if (sample_type & PERF_SAMPLE_TIME) {
|
||||
stamp = event->sample.array[cursor++];
|
||||
|
||||
if (!first_time || first_time > stamp)
|
||||
first_time = stamp;
|
||||
if (last_time < stamp)
|
||||
last_time = stamp;
|
||||
|
||||
if (!first_time || first_time > data.time)
|
||||
first_time = data.time;
|
||||
if (last_time < data.time)
|
||||
last_time = data.time;
|
||||
}
|
||||
if (sample_type & PERF_SAMPLE_ADDR)
|
||||
addr = event->sample.array[cursor++];
|
||||
if (sample_type & PERF_SAMPLE_ID)
|
||||
cursor++;
|
||||
if (sample_type & PERF_SAMPLE_STREAM_ID)
|
||||
cursor++;
|
||||
if (sample_type & PERF_SAMPLE_CPU)
|
||||
cpu = event->sample.array[cursor++] & 0xFFFFFFFF;
|
||||
if (sample_type & PERF_SAMPLE_PERIOD)
|
||||
cursor++;
|
||||
|
||||
te = (void *)&event->sample.array[cursor];
|
||||
|
||||
if (sample_type & PERF_SAMPLE_RAW && te->size > 0) {
|
||||
te = (void *)data.raw_data;
|
||||
if (sample_type & PERF_SAMPLE_RAW && data.raw_size > 0) {
|
||||
char *event_str;
|
||||
struct power_entry *pe;
|
||||
|
||||
|
|
@ -532,19 +510,19 @@ process_sample_event(event_t *event)
|
|||
return 0;
|
||||
|
||||
if (strcmp(event_str, "power:power_start") == 0)
|
||||
c_state_start(cpu, stamp, pe->value);
|
||||
c_state_start(data.cpu, data.time, pe->value);
|
||||
|
||||
if (strcmp(event_str, "power:power_end") == 0)
|
||||
c_state_end(cpu, stamp);
|
||||
c_state_end(data.cpu, data.time);
|
||||
|
||||
if (strcmp(event_str, "power:power_frequency") == 0)
|
||||
p_state_change(cpu, stamp, pe->value);
|
||||
p_state_change(data.cpu, data.time, pe->value);
|
||||
|
||||
if (strcmp(event_str, "sched:sched_wakeup") == 0)
|
||||
sched_wakeup(cpu, stamp, pid, te);
|
||||
sched_wakeup(data.cpu, data.time, data.pid, te);
|
||||
|
||||
if (strcmp(event_str, "sched:sched_switch") == 0)
|
||||
sched_switch(cpu, stamp, te);
|
||||
sched_switch(data.cpu, data.time, te);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -66,58 +66,40 @@ static u64 sample_type;
|
|||
|
||||
static int process_sample_event(event_t *event)
|
||||
{
|
||||
u64 ip = event->ip.ip;
|
||||
u64 timestamp = -1;
|
||||
u32 cpu = -1;
|
||||
u64 period = 1;
|
||||
void *more_data = event->ip.__more_data;
|
||||
struct thread *thread = threads__findnew(event->ip.pid);
|
||||
struct sample_data data;
|
||||
struct thread *thread;
|
||||
|
||||
if (sample_type & PERF_SAMPLE_TIME) {
|
||||
timestamp = *(u64 *)more_data;
|
||||
more_data += sizeof(u64);
|
||||
}
|
||||
memset(&data, 0, sizeof(data));
|
||||
data.time = -1;
|
||||
data.cpu = -1;
|
||||
data.period = 1;
|
||||
|
||||
if (sample_type & PERF_SAMPLE_CPU) {
|
||||
cpu = *(u32 *)more_data;
|
||||
more_data += sizeof(u32);
|
||||
more_data += sizeof(u32); /* reserved */
|
||||
}
|
||||
|
||||
if (sample_type & PERF_SAMPLE_PERIOD) {
|
||||
period = *(u64 *)more_data;
|
||||
more_data += sizeof(u64);
|
||||
}
|
||||
event__parse_sample(event, sample_type, &data);
|
||||
|
||||
dump_printf("(IP, %d): %d/%d: %p period: %Ld\n",
|
||||
event->header.misc,
|
||||
event->ip.pid, event->ip.tid,
|
||||
(void *)(long)ip,
|
||||
(long long)period);
|
||||
data.pid, data.tid,
|
||||
(void *)(long)data.ip,
|
||||
(long long)data.period);
|
||||
|
||||
thread = threads__findnew(event->ip.pid);
|
||||
if (thread == NULL) {
|
||||
pr_debug("problem processing %d event, skipping it.\n",
|
||||
event->header.type);
|
||||
return -1;
|
||||
}
|
||||
|
||||
dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
|
||||
|
||||
if (sample_type & PERF_SAMPLE_RAW) {
|
||||
struct {
|
||||
u32 size;
|
||||
char data[0];
|
||||
} *raw = more_data;
|
||||
|
||||
/*
|
||||
* FIXME: better resolve from pid from the struct trace_entry
|
||||
* field, although it should be the same than this perf
|
||||
* event pid
|
||||
*/
|
||||
scripting_ops->process_event(cpu, raw->data, raw->size,
|
||||
timestamp, thread->comm);
|
||||
scripting_ops->process_event(data.cpu, data.raw_data,
|
||||
data.raw_size,
|
||||
data.time, thread->comm);
|
||||
}
|
||||
event__stats.total += period;
|
||||
event__stats.total += data.period;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -100,11 +100,11 @@ process_event(event_t *event, unsigned long offset, unsigned long head)
|
|||
}
|
||||
}
|
||||
|
||||
int perf_header__read_build_ids(int input, off_t offset, off_t size)
|
||||
int perf_header__read_build_ids(int input, u64 offset, u64 size)
|
||||
{
|
||||
struct build_id_event bev;
|
||||
char filename[PATH_MAX];
|
||||
off_t limit = offset + size;
|
||||
u64 limit = offset + size;
|
||||
int err = -1;
|
||||
|
||||
while (offset < limit) {
|
||||
|
|
|
|||
|
|
@ -27,6 +27,6 @@ int mmap_dispatch_perf_file(struct perf_header **pheader,
|
|||
int full_paths,
|
||||
int *cwdlen,
|
||||
char **cwd);
|
||||
int perf_header__read_build_ids(int input, off_t offset, off_t file_size);
|
||||
int perf_header__read_build_ids(int input, u64 offset, u64 file_size);
|
||||
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -310,3 +310,70 @@ int event__preprocess_sample(const event_t *self, struct addr_location *al,
|
|||
al->level == 'H' ? "[hypervisor]" : "<not found>");
|
||||
return 0;
|
||||
}
|
||||
|
||||
int event__parse_sample(event_t *event, u64 type, struct sample_data *data)
|
||||
{
|
||||
u64 *array = event->sample.array;
|
||||
|
||||
if (type & PERF_SAMPLE_IP) {
|
||||
data->ip = event->ip.ip;
|
||||
array++;
|
||||
}
|
||||
|
||||
if (type & PERF_SAMPLE_TID) {
|
||||
u32 *p = (u32 *)array;
|
||||
data->pid = p[0];
|
||||
data->tid = p[1];
|
||||
array++;
|
||||
}
|
||||
|
||||
if (type & PERF_SAMPLE_TIME) {
|
||||
data->time = *array;
|
||||
array++;
|
||||
}
|
||||
|
||||
if (type & PERF_SAMPLE_ADDR) {
|
||||
data->addr = *array;
|
||||
array++;
|
||||
}
|
||||
|
||||
if (type & PERF_SAMPLE_ID) {
|
||||
data->id = *array;
|
||||
array++;
|
||||
}
|
||||
|
||||
if (type & PERF_SAMPLE_STREAM_ID) {
|
||||
data->stream_id = *array;
|
||||
array++;
|
||||
}
|
||||
|
||||
if (type & PERF_SAMPLE_CPU) {
|
||||
u32 *p = (u32 *)array;
|
||||
data->cpu = *p;
|
||||
array++;
|
||||
}
|
||||
|
||||
if (type & PERF_SAMPLE_PERIOD) {
|
||||
data->period = *array;
|
||||
array++;
|
||||
}
|
||||
|
||||
if (type & PERF_SAMPLE_READ) {
|
||||
pr_debug("PERF_SAMPLE_READ is unsuported for now\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (type & PERF_SAMPLE_CALLCHAIN) {
|
||||
data->callchain = (struct ip_callchain *)array;
|
||||
array += 1 + data->callchain->nr;
|
||||
}
|
||||
|
||||
if (type & PERF_SAMPLE_RAW) {
|
||||
u32 *p = (u32 *)array;
|
||||
data->raw_size = *p;
|
||||
p++;
|
||||
data->raw_data = p;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -56,11 +56,25 @@ struct read_event {
|
|||
u64 id;
|
||||
};
|
||||
|
||||
struct sample_event{
|
||||
struct sample_event {
|
||||
struct perf_event_header header;
|
||||
u64 array[];
|
||||
};
|
||||
|
||||
struct sample_data {
|
||||
u64 ip;
|
||||
u32 pid, tid;
|
||||
u64 time;
|
||||
u64 addr;
|
||||
u64 id;
|
||||
u64 stream_id;
|
||||
u32 cpu;
|
||||
u64 period;
|
||||
struct ip_callchain *callchain;
|
||||
u32 raw_size;
|
||||
void *raw_data;
|
||||
};
|
||||
|
||||
#define BUILD_ID_SIZE 20
|
||||
|
||||
struct build_id_event {
|
||||
|
|
@ -155,5 +169,6 @@ int event__process_task(event_t *self);
|
|||
struct addr_location;
|
||||
int event__preprocess_sample(const event_t *self, struct addr_location *al,
|
||||
symbol_filter_t filter);
|
||||
int event__parse_sample(event_t *event, u64 type, struct sample_data *data);
|
||||
|
||||
#endif /* __PERF_RECORD_H */
|
||||
|
|
|
|||
|
|
@ -187,7 +187,9 @@ static int do_write(int fd, const void *buf, size_t size)
|
|||
|
||||
static int __dsos__write_buildid_table(struct list_head *head, int fd)
|
||||
{
|
||||
#define NAME_ALIGN 64
|
||||
struct dso *pos;
|
||||
static const char zero_buf[NAME_ALIGN];
|
||||
|
||||
list_for_each_entry(pos, head, node) {
|
||||
int err;
|
||||
|
|
@ -197,14 +199,17 @@ static int __dsos__write_buildid_table(struct list_head *head, int fd)
|
|||
if (!pos->has_build_id)
|
||||
continue;
|
||||
len = pos->long_name_len + 1;
|
||||
len = ALIGN(len, 64);
|
||||
len = ALIGN(len, NAME_ALIGN);
|
||||
memset(&b, 0, sizeof(b));
|
||||
memcpy(&b.build_id, pos->build_id, sizeof(pos->build_id));
|
||||
b.header.size = sizeof(b) + len;
|
||||
err = do_write(fd, &b, sizeof(b));
|
||||
if (err < 0)
|
||||
return err;
|
||||
err = do_write(fd, pos->long_name, len);
|
||||
err = do_write(fd, pos->long_name, pos->long_name_len + 1);
|
||||
if (err < 0)
|
||||
return err;
|
||||
err = do_write(fd, zero_buf, len - pos->long_name_len - 1);
|
||||
if (err < 0)
|
||||
return err;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -197,7 +197,7 @@ struct tracepoint_path *tracepoint_id_to_path(u64 config)
|
|||
if (id == config) {
|
||||
closedir(evt_dir);
|
||||
closedir(sys_dir);
|
||||
path = zalloc(sizeof(path));
|
||||
path = zalloc(sizeof(*path));
|
||||
path->system = malloc(MAX_EVENT_LENGTH);
|
||||
if (!path->system) {
|
||||
free(path);
|
||||
|
|
@ -467,7 +467,6 @@ parse_subsystem_tracepoint_event(char *sys_name, char *flags)
|
|||
while ((evt_ent = readdir(evt_dir))) {
|
||||
char event_opt[MAX_EVOPT_LEN + 1];
|
||||
int len;
|
||||
unsigned int rem = MAX_EVOPT_LEN;
|
||||
|
||||
if (!strcmp(evt_ent->d_name, ".")
|
||||
|| !strcmp(evt_ent->d_name, "..")
|
||||
|
|
@ -475,20 +474,12 @@ parse_subsystem_tracepoint_event(char *sys_name, char *flags)
|
|||
|| !strcmp(evt_ent->d_name, "filter"))
|
||||
continue;
|
||||
|
||||
len = snprintf(event_opt, MAX_EVOPT_LEN, "%s:%s", sys_name,
|
||||
evt_ent->d_name);
|
||||
len = snprintf(event_opt, MAX_EVOPT_LEN, "%s:%s%s%s", sys_name,
|
||||
evt_ent->d_name, flags ? ":" : "",
|
||||
flags ?: "");
|
||||
if (len < 0)
|
||||
return EVT_FAILED;
|
||||
|
||||
rem -= len;
|
||||
if (flags) {
|
||||
if (rem < strlen(flags) + 1)
|
||||
return EVT_FAILED;
|
||||
|
||||
strcat(event_opt, ":");
|
||||
strcat(event_opt, flags);
|
||||
}
|
||||
|
||||
if (parse_events(NULL, event_opt, 0))
|
||||
return EVT_FAILED;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -430,6 +430,9 @@ int usage_with_options_internal(const char * const *usagestr,
|
|||
pos = fprintf(stderr, " ");
|
||||
if (opts->short_name)
|
||||
pos += fprintf(stderr, "-%c", opts->short_name);
|
||||
else
|
||||
pos += fprintf(stderr, " ");
|
||||
|
||||
if (opts->long_name && opts->short_name)
|
||||
pos += fprintf(stderr, ", ");
|
||||
if (opts->long_name)
|
||||
|
|
|
|||
|
|
@ -47,6 +47,9 @@
|
|||
#define semantic_error(msg ...) die("Semantic error :" msg)
|
||||
|
||||
/* If there is no space to write, returns -E2BIG. */
|
||||
static int e_snprintf(char *str, size_t size, const char *format, ...)
|
||||
__attribute__((format(printf, 3, 4)));
|
||||
|
||||
static int e_snprintf(char *str, size_t size, const char *format, ...)
|
||||
{
|
||||
int ret;
|
||||
|
|
@ -258,7 +261,7 @@ int synthesize_perf_probe_event(struct probe_point *pp)
|
|||
ret = e_snprintf(buf, MAX_CMDLEN, "%s%s%s%s", pp->function,
|
||||
offs, pp->retprobe ? "%return" : "", line);
|
||||
else
|
||||
ret = e_snprintf(buf, MAX_CMDLEN, "%s%s%s%s", pp->file, line);
|
||||
ret = e_snprintf(buf, MAX_CMDLEN, "%s%s", pp->file, line);
|
||||
if (ret <= 0)
|
||||
goto error;
|
||||
len = ret;
|
||||
|
|
@ -373,14 +376,32 @@ static void clear_probe_point(struct probe_point *pp)
|
|||
free(pp->args);
|
||||
for (i = 0; i < pp->found; i++)
|
||||
free(pp->probes[i]);
|
||||
memset(pp, 0, sizeof(pp));
|
||||
memset(pp, 0, sizeof(*pp));
|
||||
}
|
||||
|
||||
/* Show an event */
|
||||
static void show_perf_probe_event(const char *group, const char *event,
|
||||
const char *place, struct probe_point *pp)
|
||||
{
|
||||
int i;
|
||||
char buf[128];
|
||||
|
||||
e_snprintf(buf, 128, "%s:%s", group, event);
|
||||
printf(" %-40s (on %s", buf, place);
|
||||
|
||||
if (pp->nr_args > 0) {
|
||||
printf(" with");
|
||||
for (i = 0; i < pp->nr_args; i++)
|
||||
printf(" %s", pp->args[i]);
|
||||
}
|
||||
printf(")\n");
|
||||
}
|
||||
|
||||
/* List up current perf-probe events */
|
||||
void show_perf_probe_events(void)
|
||||
{
|
||||
unsigned int i;
|
||||
int fd;
|
||||
int fd, nr;
|
||||
char *group, *event;
|
||||
struct probe_point pp;
|
||||
struct strlist *rawlist;
|
||||
|
|
@ -393,8 +414,13 @@ void show_perf_probe_events(void)
|
|||
for (i = 0; i < strlist__nr_entries(rawlist); i++) {
|
||||
ent = strlist__entry(rawlist, i);
|
||||
parse_trace_kprobe_event(ent->s, &group, &event, &pp);
|
||||
/* Synthesize only event probe point */
|
||||
nr = pp.nr_args;
|
||||
pp.nr_args = 0;
|
||||
synthesize_perf_probe_event(&pp);
|
||||
printf("[%s:%s]\t%s\n", group, event, pp.probes[0]);
|
||||
pp.nr_args = nr;
|
||||
/* Show an event */
|
||||
show_perf_probe_event(group, event, pp.probes[0], &pp);
|
||||
free(group);
|
||||
free(event);
|
||||
clear_probe_point(&pp);
|
||||
|
|
@ -404,21 +430,28 @@ void show_perf_probe_events(void)
|
|||
}
|
||||
|
||||
/* Get current perf-probe event names */
|
||||
static struct strlist *get_perf_event_names(int fd)
|
||||
static struct strlist *get_perf_event_names(int fd, bool include_group)
|
||||
{
|
||||
unsigned int i;
|
||||
char *group, *event;
|
||||
char buf[128];
|
||||
struct strlist *sl, *rawlist;
|
||||
struct str_node *ent;
|
||||
|
||||
rawlist = get_trace_kprobe_event_rawlist(fd);
|
||||
|
||||
sl = strlist__new(false, NULL);
|
||||
sl = strlist__new(true, NULL);
|
||||
for (i = 0; i < strlist__nr_entries(rawlist); i++) {
|
||||
ent = strlist__entry(rawlist, i);
|
||||
parse_trace_kprobe_event(ent->s, &group, &event, NULL);
|
||||
strlist__add(sl, event);
|
||||
if (include_group) {
|
||||
if (e_snprintf(buf, 128, "%s:%s", group, event) < 0)
|
||||
die("Failed to copy group:event name.");
|
||||
strlist__add(sl, buf);
|
||||
} else
|
||||
strlist__add(sl, event);
|
||||
free(group);
|
||||
free(event);
|
||||
}
|
||||
|
||||
strlist__delete(rawlist);
|
||||
|
|
@ -426,24 +459,30 @@ static struct strlist *get_perf_event_names(int fd)
|
|||
return sl;
|
||||
}
|
||||
|
||||
static int write_trace_kprobe_event(int fd, const char *buf)
|
||||
static void write_trace_kprobe_event(int fd, const char *buf)
|
||||
{
|
||||
int ret;
|
||||
|
||||
pr_debug("Writing event: %s\n", buf);
|
||||
ret = write(fd, buf, strlen(buf));
|
||||
if (ret <= 0)
|
||||
die("Failed to create event.");
|
||||
else
|
||||
printf("Added new event: %s\n", buf);
|
||||
|
||||
return ret;
|
||||
die("Failed to write event: %s", strerror(errno));
|
||||
}
|
||||
|
||||
static void get_new_event_name(char *buf, size_t len, const char *base,
|
||||
struct strlist *namelist)
|
||||
{
|
||||
int i, ret;
|
||||
for (i = 0; i < MAX_EVENT_INDEX; i++) {
|
||||
|
||||
/* Try no suffix */
|
||||
ret = e_snprintf(buf, len, "%s", base);
|
||||
if (ret < 0)
|
||||
die("snprintf() failed: %s", strerror(-ret));
|
||||
if (!strlist__has_entry(namelist, buf))
|
||||
return;
|
||||
|
||||
/* Try to add suffix */
|
||||
for (i = 1; i < MAX_EVENT_INDEX; i++) {
|
||||
ret = e_snprintf(buf, len, "%s_%d", base, i);
|
||||
if (ret < 0)
|
||||
die("snprintf() failed: %s", strerror(-ret));
|
||||
|
|
@ -464,7 +503,7 @@ void add_trace_kprobe_events(struct probe_point *probes, int nr_probes)
|
|||
|
||||
fd = open_kprobe_events(O_RDWR, O_APPEND);
|
||||
/* Get current event names */
|
||||
namelist = get_perf_event_names(fd);
|
||||
namelist = get_perf_event_names(fd, false);
|
||||
|
||||
for (j = 0; j < nr_probes; j++) {
|
||||
pp = probes + j;
|
||||
|
|
@ -476,9 +515,73 @@ void add_trace_kprobe_events(struct probe_point *probes, int nr_probes)
|
|||
PERFPROBE_GROUP, event,
|
||||
pp->probes[i]);
|
||||
write_trace_kprobe_event(fd, buf);
|
||||
printf("Added new event:\n");
|
||||
/* Get the first parameter (probe-point) */
|
||||
sscanf(pp->probes[i], "%s", buf);
|
||||
show_perf_probe_event(PERFPROBE_GROUP, event,
|
||||
buf, pp);
|
||||
/* Add added event name to namelist */
|
||||
strlist__add(namelist, event);
|
||||
}
|
||||
}
|
||||
/* Show how to use the event. */
|
||||
printf("\nYou can now use it on all perf tools, such as:\n\n");
|
||||
printf("\tperf record -e %s:%s -a sleep 1\n\n", PERFPROBE_GROUP, event);
|
||||
|
||||
strlist__delete(namelist);
|
||||
close(fd);
|
||||
}
|
||||
|
||||
static void del_trace_kprobe_event(int fd, const char *group,
|
||||
const char *event, struct strlist *namelist)
|
||||
{
|
||||
char buf[128];
|
||||
|
||||
if (e_snprintf(buf, 128, "%s:%s", group, event) < 0)
|
||||
die("Failed to copy event.");
|
||||
if (!strlist__has_entry(namelist, buf)) {
|
||||
pr_warning("Warning: event \"%s\" is not found.\n", buf);
|
||||
return;
|
||||
}
|
||||
/* Convert from perf-probe event to trace-kprobe event */
|
||||
if (e_snprintf(buf, 128, "-:%s/%s", group, event) < 0)
|
||||
die("Failed to copy event.");
|
||||
|
||||
write_trace_kprobe_event(fd, buf);
|
||||
printf("Remove event: %s:%s\n", group, event);
|
||||
}
|
||||
|
||||
void del_trace_kprobe_events(struct strlist *dellist)
|
||||
{
|
||||
int fd;
|
||||
unsigned int i;
|
||||
const char *group, *event;
|
||||
char *p, *str;
|
||||
struct str_node *ent;
|
||||
struct strlist *namelist;
|
||||
|
||||
fd = open_kprobe_events(O_RDWR, O_APPEND);
|
||||
/* Get current event names */
|
||||
namelist = get_perf_event_names(fd, true);
|
||||
|
||||
for (i = 0; i < strlist__nr_entries(dellist); i++) {
|
||||
ent = strlist__entry(dellist, i);
|
||||
str = strdup(ent->s);
|
||||
if (!str)
|
||||
die("Failed to copy event.");
|
||||
p = strchr(str, ':');
|
||||
if (p) {
|
||||
group = str;
|
||||
*p = '\0';
|
||||
event = p + 1;
|
||||
} else {
|
||||
group = PERFPROBE_GROUP;
|
||||
event = str;
|
||||
}
|
||||
del_trace_kprobe_event(fd, group, event, namelist);
|
||||
free(str);
|
||||
}
|
||||
strlist__delete(namelist);
|
||||
close(fd);
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -10,6 +10,7 @@ extern void parse_trace_kprobe_event(const char *str, char **group,
|
|||
char **event, struct probe_point *pp);
|
||||
extern int synthesize_trace_kprobe_event(struct probe_point *pp);
|
||||
extern void add_trace_kprobe_events(struct probe_point *probes, int nr_probes);
|
||||
extern void del_trace_kprobe_events(struct strlist *dellist);
|
||||
extern void show_perf_probe_events(void);
|
||||
|
||||
/* Maximum index number of event-name postfix */
|
||||
|
|
|
|||
|
|
@ -106,7 +106,7 @@ static int strtailcmp(const char *s1, const char *s2)
|
|||
{
|
||||
int i1 = strlen(s1);
|
||||
int i2 = strlen(s2);
|
||||
while (--i1 > 0 && --i2 > 0) {
|
||||
while (--i1 >= 0 && --i2 >= 0) {
|
||||
if (s1[i1] != s2[i2])
|
||||
return s1[i1] - s2[i2];
|
||||
}
|
||||
|
|
|
|||
|
|
@ -938,8 +938,9 @@ static bool __dsos__read_build_ids(struct list_head *head)
|
|||
|
||||
bool dsos__read_build_ids(void)
|
||||
{
|
||||
return __dsos__read_build_ids(&dsos__kernel) ||
|
||||
__dsos__read_build_ids(&dsos__user);
|
||||
bool kbuildids = __dsos__read_build_ids(&dsos__kernel),
|
||||
ubuildids = __dsos__read_build_ids(&dsos__user);
|
||||
return kbuildids || ubuildids;
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
|
|||
|
|
@ -177,7 +177,7 @@ void parse_proc_kallsyms(char *file, unsigned int size __unused)
|
|||
func_count++;
|
||||
}
|
||||
|
||||
func_list = malloc_or_die(sizeof(*func_list) * func_count + 1);
|
||||
func_list = malloc_or_die(sizeof(*func_list) * (func_count + 1));
|
||||
|
||||
i = 0;
|
||||
while (list) {
|
||||
|
|
@ -1477,7 +1477,7 @@ process_fields(struct event *event, struct print_flag_sym **list, char **tok)
|
|||
goto out_free;
|
||||
|
||||
field = malloc_or_die(sizeof(*field));
|
||||
memset(field, 0, sizeof(field));
|
||||
memset(field, 0, sizeof(*field));
|
||||
|
||||
value = arg_eval(arg);
|
||||
field->value = strdup(value);
|
||||
|
|
|
|||
|
|
@ -32,9 +32,6 @@
|
|||
|
||||
void xs_init(pTHX);
|
||||
|
||||
void boot_Perf__Trace__Context(pTHX_ CV *cv);
|
||||
void boot_DynaLoader(pTHX_ CV *cv);
|
||||
|
||||
void xs_init(pTHX)
|
||||
{
|
||||
const char *file = __FILE__;
|
||||
|
|
@ -573,26 +570,72 @@ struct scripting_ops perl_scripting_ops = {
|
|||
.generate_script = perl_generate_script,
|
||||
};
|
||||
|
||||
#ifdef NO_LIBPERL
|
||||
void setup_perl_scripting(void)
|
||||
static void print_unsupported_msg(void)
|
||||
{
|
||||
fprintf(stderr, "Perl scripting not supported."
|
||||
" Install libperl and rebuild perf to enable it. e.g. "
|
||||
"apt-get install libperl-dev (ubuntu), yum install "
|
||||
"perl-ExtUtils-Embed (Fedora), etc.\n");
|
||||
" Install libperl and rebuild perf to enable it.\n"
|
||||
"For example:\n # apt-get install libperl-dev (ubuntu)"
|
||||
"\n # yum install perl-ExtUtils-Embed (Fedora)"
|
||||
"\n etc.\n");
|
||||
}
|
||||
#else
|
||||
void setup_perl_scripting(void)
|
||||
|
||||
static int perl_start_script_unsupported(const char *script __unused)
|
||||
{
|
||||
print_unsupported_msg();
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
static int perl_stop_script_unsupported(void)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void perl_process_event_unsupported(int cpu __unused,
|
||||
void *data __unused,
|
||||
int size __unused,
|
||||
unsigned long long nsecs __unused,
|
||||
char *comm __unused)
|
||||
{
|
||||
}
|
||||
|
||||
static int perl_generate_script_unsupported(const char *outfile __unused)
|
||||
{
|
||||
print_unsupported_msg();
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
struct scripting_ops perl_scripting_unsupported_ops = {
|
||||
.name = "Perl",
|
||||
.start_script = perl_start_script_unsupported,
|
||||
.stop_script = perl_stop_script_unsupported,
|
||||
.process_event = perl_process_event_unsupported,
|
||||
.generate_script = perl_generate_script_unsupported,
|
||||
};
|
||||
|
||||
static void register_perl_scripting(struct scripting_ops *scripting_ops)
|
||||
{
|
||||
int err;
|
||||
err = script_spec_register("Perl", &perl_scripting_ops);
|
||||
err = script_spec_register("Perl", scripting_ops);
|
||||
if (err)
|
||||
die("error registering Perl script extension");
|
||||
|
||||
err = script_spec_register("pl", &perl_scripting_ops);
|
||||
err = script_spec_register("pl", scripting_ops);
|
||||
if (err)
|
||||
die("error registering pl script extension");
|
||||
|
||||
scripting_context = malloc(sizeof(struct scripting_context));
|
||||
}
|
||||
|
||||
#ifdef NO_LIBPERL
|
||||
void setup_perl_scripting(void)
|
||||
{
|
||||
register_perl_scripting(&perl_scripting_unsupported_ops);
|
||||
}
|
||||
#else
|
||||
void setup_perl_scripting(void)
|
||||
{
|
||||
register_perl_scripting(&perl_scripting_ops);
|
||||
}
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -34,9 +34,13 @@ typedef int INTERP;
|
|||
#define dXSUB_SYS
|
||||
#define pTHX_
|
||||
static inline void newXS(const char *a, void *b, const char *c) {}
|
||||
static void boot_Perf__Trace__Context(pTHX_ CV *cv) {}
|
||||
static void boot_DynaLoader(pTHX_ CV *cv) {}
|
||||
#else
|
||||
#include <EXTERN.h>
|
||||
#include <perl.h>
|
||||
void boot_Perf__Trace__Context(pTHX_ CV *cv);
|
||||
void boot_DynaLoader(pTHX_ CV *cv);
|
||||
typedef PerlInterpreter * INTERP;
|
||||
#endif
|
||||
|
||||
|
|
|
|||
|
|
@ -145,8 +145,9 @@ static void read_proc_kallsyms(void)
|
|||
if (!size)
|
||||
return;
|
||||
|
||||
buf = malloc_or_die(size);
|
||||
buf = malloc_or_die(size + 1);
|
||||
read_or_die(buf, size);
|
||||
buf[size] = '\0';
|
||||
|
||||
parse_proc_kallsyms(buf, size);
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue