Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
1#ifndef _PERF_PERF_H
2#define _PERF_PERF_H
3
4struct winsize;
5
6void get_term_dimensions(struct winsize *ws);
7
8#if defined(__i386__)
9#include "../../arch/x86/include/asm/unistd.h"
10#define rmb() asm volatile("lock; addl $0,0(%%esp)" ::: "memory")
11#define cpu_relax() asm volatile("rep; nop" ::: "memory");
12#endif
13
14#if defined(__x86_64__)
15#include "../../arch/x86/include/asm/unistd.h"
16#define rmb() asm volatile("lfence" ::: "memory")
17#define cpu_relax() asm volatile("rep; nop" ::: "memory");
18#endif
19
20#ifdef __powerpc__
21#include "../../arch/powerpc/include/asm/unistd.h"
22#define rmb() asm volatile ("sync" ::: "memory")
23#define cpu_relax() asm volatile ("" ::: "memory");
24#endif
25
26#ifdef __s390__
27#include "../../arch/s390/include/asm/unistd.h"
28#define rmb() asm volatile("bcr 15,0" ::: "memory")
29#define cpu_relax() asm volatile("" ::: "memory");
30#endif
31
32#ifdef __sh__
33#include "../../arch/sh/include/asm/unistd.h"
34#if defined(__SH4A__) || defined(__SH5__)
35# define rmb() asm volatile("synco" ::: "memory")
36#else
37# define rmb() asm volatile("" ::: "memory")
38#endif
39#define cpu_relax() asm volatile("" ::: "memory")
40#endif
41
42#ifdef __hppa__
43#include "../../arch/parisc/include/asm/unistd.h"
44#define rmb() asm volatile("" ::: "memory")
45#define cpu_relax() asm volatile("" ::: "memory");
46#endif
47
48#ifdef __sparc__
49#include "../../arch/sparc/include/asm/unistd.h"
50#define rmb() asm volatile("":::"memory")
51#define cpu_relax() asm volatile("":::"memory")
52#endif
53
54#ifdef __alpha__
55#include "../../arch/alpha/include/asm/unistd.h"
56#define rmb() asm volatile("mb" ::: "memory")
57#define cpu_relax() asm volatile("" ::: "memory")
58#endif
59
60#ifdef __ia64__
61#include "../../arch/ia64/include/asm/unistd.h"
62#define rmb() asm volatile ("mf" ::: "memory")
63#define cpu_relax() asm volatile ("hint @pause" ::: "memory")
64#endif
65
66#ifdef __arm__
67#include "../../arch/arm/include/asm/unistd.h"
68/*
69 * Use the __kuser_memory_barrier helper in the CPU helper page. See
70 * arch/arm/kernel/entry-armv.S in the kernel source for details.
71 */
72#define rmb() ((void(*)(void))0xffff0fa0)()
73#define cpu_relax() asm volatile("":::"memory")
74#endif
75
76#include <time.h>
77#include <unistd.h>
78#include <sys/types.h>
79#include <sys/syscall.h>
80
81#include "../../include/linux/perf_event.h"
82#include "util/types.h"
83#include <stdbool.h>
84
85/*
86 * prctl(PR_TASK_PERF_EVENTS_DISABLE) will (cheaply) disable all
87 * counters in the current task.
88 */
89#define PR_TASK_PERF_EVENTS_DISABLE 31
90#define PR_TASK_PERF_EVENTS_ENABLE 32
91
92#ifndef NSEC_PER_SEC
93# define NSEC_PER_SEC 1000000000ULL
94#endif
95
96static inline unsigned long long rdclock(void)
97{
98 struct timespec ts;
99
100 clock_gettime(CLOCK_MONOTONIC, &ts);
101 return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
102}
103
104/*
105 * Pick up some kernel type conventions:
106 */
107#define __user
108#define asmlinkage
109
110#define unlikely(x) __builtin_expect(!!(x), 0)
111#define min(x, y) ({ \
112 typeof(x) _min1 = (x); \
113 typeof(y) _min2 = (y); \
114 (void) (&_min1 == &_min2); \
115 _min1 < _min2 ? _min1 : _min2; })
116
117static inline int
118sys_perf_event_open(struct perf_event_attr *attr,
119 pid_t pid, int cpu, int group_fd,
120 unsigned long flags)
121{
122 attr->size = sizeof(*attr);
123 return syscall(__NR_perf_event_open, attr, pid, cpu,
124 group_fd, flags);
125}
126
127#define MAX_COUNTERS 256
128#define MAX_NR_CPUS 256
129
130struct ip_callchain {
131 u64 nr;
132 u64 ips[0];
133};
134
135extern bool perf_host, perf_guest;
136
137#endif