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