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/compiler.h>
9#include <linux/perf_event.h>
10#include <asm/barrier.h>
11
12#if defined(__i386__)
13#define cpu_relax() asm volatile("rep; nop" ::: "memory");
14#define CPUINFO_PROC {"model name"}
15#endif
16
17#if defined(__x86_64__)
18#define cpu_relax() asm volatile("rep; nop" ::: "memory");
19#define CPUINFO_PROC {"model name"}
20#endif
21
22#ifdef __powerpc__
23#define CPUINFO_PROC {"cpu"}
24#endif
25
26#ifdef __s390__
27#define CPUINFO_PROC {"vendor_id"}
28#endif
29
30#ifdef __sh__
31#define CPUINFO_PROC {"cpu type"}
32#endif
33
34#ifdef __hppa__
35#define CPUINFO_PROC {"cpu"}
36#endif
37
38#ifdef __sparc__
39#define CPUINFO_PROC {"cpu"}
40#endif
41
42#ifdef __alpha__
43#define CPUINFO_PROC {"cpu model"}
44#endif
45
46#ifdef __ia64__
47#define cpu_relax() asm volatile ("hint @pause" ::: "memory")
48#define CPUINFO_PROC {"model name"}
49#endif
50
51#ifdef __arm__
52#define CPUINFO_PROC {"model name", "Processor"}
53#endif
54
55#ifdef __aarch64__
56#define cpu_relax() asm volatile("yield" ::: "memory")
57#endif
58
59#ifdef __mips__
60#define CPUINFO_PROC {"cpu model"}
61#endif
62
63#ifdef __arc__
64#define CPUINFO_PROC {"Processor"}
65#endif
66
67#ifdef __metag__
68#define CPUINFO_PROC {"CPU"}
69#endif
70
71#ifdef __xtensa__
72#define CPUINFO_PROC {"core ID"}
73#endif
74
75#ifdef __tile__
76#define cpu_relax() asm volatile ("mfspr zero, PASS" ::: "memory")
77#define CPUINFO_PROC {"model name"}
78#endif
79
80#ifndef cpu_relax
81#define cpu_relax() barrier()
82#endif
83
84static inline int
85sys_perf_event_open(struct perf_event_attr *attr,
86 pid_t pid, int cpu, int group_fd,
87 unsigned long flags)
88{
89 int fd;
90
91 fd = syscall(__NR_perf_event_open, attr, pid, cpu,
92 group_fd, flags);
93
94#ifdef HAVE_ATTR_TEST
95 if (unlikely(test_attr__enabled))
96 test_attr__open(attr, pid, cpu, fd, group_fd, flags);
97#endif
98 return fd;
99}
100
101#endif /* _PERF_SYS_H */