c1e028ef40
Changes: v4: Fix the cosmetic issue of redundant dot-ops v3: Change rmb() to use SYNC v2: Include mips unistd.h and define rmb()/cpu_relax() in tools/perf/perf.h Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@gmail.com> Acked-by: Ralf Baechle <ralf@linux-mips.org> Cc: David Daney <ddaney@caviumnetworks.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
149 lines
3.6 KiB
C
149 lines
3.6 KiB
C
#ifndef _PERF_PERF_H
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#define _PERF_PERF_H
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struct winsize;
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void get_term_dimensions(struct winsize *ws);
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#if defined(__i386__)
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#include "../../arch/x86/include/asm/unistd.h"
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#define rmb() asm volatile("lock; addl $0,0(%%esp)" ::: "memory")
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#define cpu_relax() asm volatile("rep; nop" ::: "memory");
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#endif
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#if defined(__x86_64__)
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#include "../../arch/x86/include/asm/unistd.h"
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#define rmb() asm volatile("lfence" ::: "memory")
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#define cpu_relax() asm volatile("rep; nop" ::: "memory");
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#endif
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#ifdef __powerpc__
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#include "../../arch/powerpc/include/asm/unistd.h"
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#define rmb() asm volatile ("sync" ::: "memory")
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#define cpu_relax() asm volatile ("" ::: "memory");
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#endif
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#ifdef __s390__
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#include "../../arch/s390/include/asm/unistd.h"
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#define rmb() asm volatile("bcr 15,0" ::: "memory")
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#define cpu_relax() asm volatile("" ::: "memory");
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#endif
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#ifdef __sh__
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#include "../../arch/sh/include/asm/unistd.h"
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#if defined(__SH4A__) || defined(__SH5__)
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# define rmb() asm volatile("synco" ::: "memory")
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#else
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# define rmb() asm volatile("" ::: "memory")
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#endif
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#define cpu_relax() asm volatile("" ::: "memory")
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#endif
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#ifdef __hppa__
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#include "../../arch/parisc/include/asm/unistd.h"
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#define rmb() asm volatile("" ::: "memory")
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#define cpu_relax() asm volatile("" ::: "memory");
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#endif
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#ifdef __sparc__
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#include "../../arch/sparc/include/asm/unistd.h"
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#define rmb() asm volatile("":::"memory")
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#define cpu_relax() asm volatile("":::"memory")
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#endif
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#ifdef __alpha__
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#include "../../arch/alpha/include/asm/unistd.h"
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#define rmb() asm volatile("mb" ::: "memory")
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#define cpu_relax() asm volatile("" ::: "memory")
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#endif
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#ifdef __ia64__
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#include "../../arch/ia64/include/asm/unistd.h"
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#define rmb() asm volatile ("mf" ::: "memory")
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#define cpu_relax() asm volatile ("hint @pause" ::: "memory")
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#endif
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#ifdef __arm__
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#include "../../arch/arm/include/asm/unistd.h"
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/*
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* Use the __kuser_memory_barrier helper in the CPU helper page. See
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* arch/arm/kernel/entry-armv.S in the kernel source for details.
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*/
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#define rmb() ((void(*)(void))0xffff0fa0)()
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#define cpu_relax() asm volatile("":::"memory")
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#endif
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#ifdef __mips__
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#include "../../arch/mips/include/asm/unistd.h"
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#define rmb() asm volatile( \
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".set mips2\n\t" \
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"sync\n\t" \
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".set mips0" \
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: /* no output */ \
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: /* no input */ \
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: "memory")
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#define cpu_relax() asm volatile("" ::: "memory")
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#endif
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#include <time.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/syscall.h>
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#include "../../include/linux/perf_event.h"
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#include "util/types.h"
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#include <stdbool.h>
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/*
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* prctl(PR_TASK_PERF_EVENTS_DISABLE) will (cheaply) disable all
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* counters in the current task.
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*/
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#define PR_TASK_PERF_EVENTS_DISABLE 31
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#define PR_TASK_PERF_EVENTS_ENABLE 32
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#ifndef NSEC_PER_SEC
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# define NSEC_PER_SEC 1000000000ULL
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#endif
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static inline unsigned long long rdclock(void)
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{
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struct timespec ts;
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clock_gettime(CLOCK_MONOTONIC, &ts);
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return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
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}
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/*
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* Pick up some kernel type conventions:
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*/
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#define __user
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#define asmlinkage
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#define unlikely(x) __builtin_expect(!!(x), 0)
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#define min(x, y) ({ \
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typeof(x) _min1 = (x); \
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typeof(y) _min2 = (y); \
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(void) (&_min1 == &_min2); \
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_min1 < _min2 ? _min1 : _min2; })
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static inline int
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sys_perf_event_open(struct perf_event_attr *attr,
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pid_t pid, int cpu, int group_fd,
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unsigned long flags)
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{
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attr->size = sizeof(*attr);
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return syscall(__NR_perf_event_open, attr, pid, cpu,
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group_fd, flags);
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}
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#define MAX_COUNTERS 256
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#define MAX_NR_CPUS 256
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struct ip_callchain {
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u64 nr;
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u64 ips[0];
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};
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extern bool perf_host, perf_guest;
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#endif
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