tools/perf/perf-sys.h

   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
  84 static inline int
  85 sys_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 */