blob: 87a1aca4a4246e0dad3ea82276ccd5487cddacf0 [file] [log] [blame]
Thomas Gleixner6eda5832009-05-01 18:29:57 +02001#ifndef _PERF_PERF_H
2#define _PERF_PERF_H
3
Peter Zijlstra1a482f32009-05-23 18:28:58 +02004#if defined(__x86_64__) || defined(__i386__)
5#include "../../arch/x86/include/asm/unistd.h"
6#define rmb() asm volatile("lfence" ::: "memory")
7#define cpu_relax() asm volatile("rep; nop" ::: "memory");
8#endif
9
10#ifdef __powerpc__
11#include "../../arch/powerpc/include/asm/unistd.h"
12#define rmb() asm volatile ("sync" ::: "memory")
13#define cpu_relax() asm volatile ("" ::: "memory");
14#endif
15
16#include <time.h>
17#include <unistd.h>
18#include <sys/types.h>
19#include <sys/syscall.h>
20
21#include "../../include/linux/perf_counter.h"
22
Thomas Gleixner6eda5832009-05-01 18:29:57 +020023/*
24 * prctl(PR_TASK_PERF_COUNTERS_DISABLE) will (cheaply) disable all
25 * counters in the current task.
26 */
27#define PR_TASK_PERF_COUNTERS_DISABLE 31
28#define PR_TASK_PERF_COUNTERS_ENABLE 32
29
Thomas Gleixnera92e702372009-05-01 18:39:47 +020030#ifndef NSEC_PER_SEC
31# define NSEC_PER_SEC 1000000000ULL
32#endif
33
34static inline unsigned long long rdclock(void)
35{
36 struct timespec ts;
37
38 clock_gettime(CLOCK_MONOTONIC, &ts);
39 return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
40}
Thomas Gleixner6eda5832009-05-01 18:29:57 +020041
42/*
43 * Pick up some kernel type conventions:
44 */
45#define __user
46#define asmlinkage
47
Thomas Gleixner6eda5832009-05-01 18:29:57 +020048#define unlikely(x) __builtin_expect(!!(x), 0)
49#define min(x, y) ({ \
50 typeof(x) _min1 = (x); \
51 typeof(y) _min2 = (y); \
52 (void) (&_min1 == &_min2); \
53 _min1 < _min2 ? _min1 : _min2; })
54
55static inline int
Peter Zijlstra974802e2009-06-12 12:46:55 +020056sys_perf_counter_open(struct perf_counter_attr *attr,
Thomas Gleixner6eda5832009-05-01 18:29:57 +020057 pid_t pid, int cpu, int group_fd,
58 unsigned long flags)
59{
Peter Zijlstra974802e2009-06-12 12:46:55 +020060 attr->size = sizeof(*attr);
61 return syscall(__NR_perf_counter_open, attr, pid, cpu,
Thomas Gleixner6eda5832009-05-01 18:29:57 +020062 group_fd, flags);
63}
64
Ingo Molnar85a9f922009-05-25 09:59:50 +020065#define MAX_COUNTERS 256
66#define MAX_NR_CPUS 256
Thomas Gleixner6eda5832009-05-01 18:29:57 +020067
Thomas Gleixner6eda5832009-05-01 18:29:57 +020068#endif