Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#ifndef _PERF_SYS_H
2#define _PERF_SYS_H
3
4#include <unistd.h>
5#include <sys/types.h>
6#include <sys/syscall.h>
7#include <linux/types.h>
8#include <linux/perf_event.h>
9#include <asm/barrier.h>
10
11#if defined(__i386__)
12#define cpu_relax() asm volatile("rep; nop" ::: "memory");
13#define CPUINFO_PROC {"model name"}
14#ifndef __NR_perf_event_open
15# define __NR_perf_event_open 336
16#endif
17#ifndef __NR_futex
18# define __NR_futex 240
19#endif
20#ifndef __NR_gettid
21# define __NR_gettid 224
22#endif
23#endif
24
25#if defined(__x86_64__)
26#define cpu_relax() asm volatile("rep; nop" ::: "memory");
27#define CPUINFO_PROC {"model name"}
28#ifndef __NR_perf_event_open
29# define __NR_perf_event_open 298
30#endif
31#ifndef __NR_futex
32# define __NR_futex 202
33#endif
34#ifndef __NR_gettid
35# define __NR_gettid 186
36#endif
37#endif
38
39#ifdef __powerpc__
40#include "../../arch/powerpc/include/uapi/asm/unistd.h"
41#define CPUINFO_PROC {"cpu"}
42#endif
43
44#ifdef __s390__
45#define CPUINFO_PROC {"vendor_id"}
46#endif
47
48#ifdef __sh__
49#define CPUINFO_PROC {"cpu type"}
50#endif
51
52#ifdef __hppa__
53#define CPUINFO_PROC {"cpu"}
54#endif
55
56#ifdef __sparc__
57#define CPUINFO_PROC {"cpu"}
58#endif
59
60#ifdef __alpha__
61#define CPUINFO_PROC {"cpu model"}
62#endif
63
64#ifdef __ia64__
65#define cpu_relax() asm volatile ("hint @pause" ::: "memory")
66#define CPUINFO_PROC {"model name"}
67#endif
68
69#ifdef __arm__
70#define CPUINFO_PROC {"model name", "Processor"}
71#endif
72
73#ifdef __aarch64__
74#define cpu_relax() asm volatile("yield" ::: "memory")
75#endif
76
77#ifdef __mips__
78#define CPUINFO_PROC {"cpu model"}
79#endif
80
81#ifdef __arc__
82#define CPUINFO_PROC {"Processor"}
83#endif
84
85#ifdef __metag__
86#define CPUINFO_PROC {"CPU"}
87#endif
88
89#ifdef __xtensa__
90#define CPUINFO_PROC {"core ID"}
91#endif
92
93#ifdef __tile__
94#define cpu_relax() asm volatile ("mfspr zero, PASS" ::: "memory")
95#define CPUINFO_PROC {"model name"}
96#endif
97
98#ifndef cpu_relax
99#define cpu_relax() barrier()
100#endif
101
102static inline int
103sys_perf_event_open(struct perf_event_attr *attr,
104 pid_t pid, int cpu, int group_fd,
105 unsigned long flags)
106{
107 int fd;
108
109 fd = syscall(__NR_perf_event_open, attr, pid, cpu,
110 group_fd, flags);
111
112#ifdef HAVE_ATTR_TEST
113 if (unlikely(test_attr__enabled))
114 test_attr__open(attr, pid, cpu, fd, group_fd, flags);
115#endif
116 return fd;
117}
118
119#endif /* _PERF_SYS_H */