Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1#ifndef _PERF_PERF_H
2#define _PERF_PERF_H
3
4#if defined(__i386__)
5#include "../../arch/x86/include/asm/unistd.h"
6#define rmb() asm volatile("lock; addl $0,0(%%esp)" ::: "memory")
7#define cpu_relax() asm volatile("rep; nop" ::: "memory");
8#endif
9
10#if defined(__x86_64__)
11#include "../../arch/x86/include/asm/unistd.h"
12#define rmb() asm volatile("lfence" ::: "memory")
13#define cpu_relax() asm volatile("rep; nop" ::: "memory");
14#endif
15
16#ifdef __powerpc__
17#include "../../arch/powerpc/include/asm/unistd.h"
18#define rmb() asm volatile ("sync" ::: "memory")
19#define cpu_relax() asm volatile ("" ::: "memory");
20#endif
21
22#ifdef __s390__
23#include "../../arch/s390/include/asm/unistd.h"
24#define rmb() asm volatile("bcr 15,0" ::: "memory")
25#define cpu_relax() asm volatile("" ::: "memory");
26#endif
27
28#ifdef __sh__
29#include "../../arch/sh/include/asm/unistd.h"
30#if defined(__SH4A__) || defined(__SH5__)
31# define rmb() asm volatile("synco" ::: "memory")
32#else
33# define rmb() asm volatile("" ::: "memory")
34#endif
35#define cpu_relax() asm volatile("" ::: "memory")
36#endif
37
38#ifdef __hppa__
39#include "../../arch/parisc/include/asm/unistd.h"
40#define rmb() asm volatile("" ::: "memory")
41#define cpu_relax() asm volatile("" ::: "memory");
42#endif
43
44#ifdef __sparc__
45#include "../../arch/sparc/include/asm/unistd.h"
46#define rmb() asm volatile("":::"memory")
47#define cpu_relax() asm volatile("":::"memory")
48#endif
49
50#ifdef __alpha__
51#include "../../arch/alpha/include/asm/unistd.h"
52#define rmb() asm volatile("mb" ::: "memory")
53#define cpu_relax() asm volatile("" ::: "memory")
54#endif
55
56#ifdef __ia64__
57#include "../../arch/ia64/include/asm/unistd.h"
58#define rmb() asm volatile ("mf" ::: "memory")
59#define cpu_relax() asm volatile ("hint @pause" ::: "memory")
60#endif
61
62#ifdef __arm__
63#include "../../arch/arm/include/asm/unistd.h"
64/*
65 * Use the __kuser_memory_barrier helper in the CPU helper page. See
66 * arch/arm/kernel/entry-armv.S in the kernel source for details.
67 */
68#define rmb() ((void(*)(void))0xffff0fa0)()
69#define cpu_relax() asm volatile("":::"memory")
70#endif
71
72#include <time.h>
73#include <unistd.h>
74#include <sys/types.h>
75#include <sys/syscall.h>
76
77#include "../../include/linux/perf_event.h"
78#include "util/types.h"
79
80/*
81 * prctl(PR_TASK_PERF_EVENTS_DISABLE) will (cheaply) disable all
82 * counters in the current task.
83 */
84#define PR_TASK_PERF_EVENTS_DISABLE 31
85#define PR_TASK_PERF_EVENTS_ENABLE 32
86
87#ifndef NSEC_PER_SEC
88# define NSEC_PER_SEC 1000000000ULL
89#endif
90
91static inline unsigned long long rdclock(void)
92{
93 struct timespec ts;
94
95 clock_gettime(CLOCK_MONOTONIC, &ts);
96 return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
97}
98
99/*
100 * Pick up some kernel type conventions:
101 */
102#define __user
103#define asmlinkage
104
105#define __used __attribute__((__unused__))
106
107#define unlikely(x) __builtin_expect(!!(x), 0)
108#define min(x, y) ({ \
109 typeof(x) _min1 = (x); \
110 typeof(y) _min2 = (y); \
111 (void) (&_min1 == &_min2); \
112 _min1 < _min2 ? _min1 : _min2; })
113
114static inline int
115sys_perf_event_open(struct perf_event_attr *attr,
116 pid_t pid, int cpu, int group_fd,
117 unsigned long flags)
118{
119 attr->size = sizeof(*attr);
120 return syscall(__NR_perf_event_open, attr, pid, cpu,
121 group_fd, flags);
122}
123
124#define MAX_COUNTERS 256
125#define MAX_NR_CPUS 256
126
127struct ip_callchain {
128 u64 nr;
129 u64 ips[0];
130};
131
132#endif