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/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 #if defined(__SH4A__) || defined(__SH5__)
  50 # define mb()           asm volatile("synco" ::: "memory")
  51 # define wmb()          asm volatile("synco" ::: "memory")
  52 # define rmb()          asm volatile("synco" ::: "memory")
  53 #else
  54 # define mb()           asm volatile("" ::: "memory")
  55 # define wmb()          asm volatile("" ::: "memory")
  56 # define rmb()          asm volatile("" ::: "memory")
  57 #endif
  58 #define CPUINFO_PROC    {"cpu type"}
  59 #endif
  60
  61 #ifdef __hppa__
  62 #define mb()            asm volatile("" ::: "memory")
  63 #define wmb()           asm volatile("" ::: "memory")
  64 #define rmb()           asm volatile("" ::: "memory")
  65 #define CPUINFO_PROC    {"cpu"}
  66 #endif
  67
  68 #ifdef __sparc__
  69 #ifdef __LP64__
  70 #define mb()            asm volatile("ba,pt %%xcc, 1f\n"        \
  71                                      "membar #StoreLoad\n"      \
  72                                      "1:\n":::"memory")
  73 #else
  74 #define mb()            asm volatile("":::"memory")
  75 #endif
  76 #define wmb()           asm volatile("":::"memory")
  77 #define rmb()           asm volatile("":::"memory")
  78 #define CPUINFO_PROC    {"cpu"}
  79 #endif
  80
  81 #ifdef __alpha__
  82 #define mb()            asm volatile("mb" ::: "memory")
  83 #define wmb()           asm volatile("wmb" ::: "memory")
  84 #define rmb()           asm volatile("mb" ::: "memory")
  85 #define CPUINFO_PROC    {"cpu model"}
  86 #endif
  87
  88 #ifdef __ia64__
  89 #define mb()            asm volatile ("mf" ::: "memory")
  90 #define wmb()           asm volatile ("mf" ::: "memory")
  91 #define rmb()           asm volatile ("mf" ::: "memory")
  92 #define cpu_relax()     asm volatile ("hint @pause" ::: "memory")
  93 #define CPUINFO_PROC    {"model name"}
  94 #endif
  95
  96 #ifdef __arm__
  97 /*
  98  * Use the __kuser_memory_barrier helper in the CPU helper page. See
  99  * arch/arm/kernel/entry-armv.S in the kernel source for details.
 100  */
 101 #define mb()            ((void(*)(void))0xffff0fa0)()
 102 #define wmb()           ((void(*)(void))0xffff0fa0)()
 103 #define rmb()           ((void(*)(void))0xffff0fa0)()
 104 #define CPUINFO_PROC    {"model name", "Processor"}
 105 #endif
 106
 107 #ifdef __aarch64__
 108 #define mb()            asm volatile("dmb ish" ::: "memory")
 109 #define wmb()           asm volatile("dmb ishst" ::: "memory")
 110 #define rmb()           asm volatile("dmb ishld" ::: "memory")
 111 #define cpu_relax()     asm volatile("yield" ::: "memory")
 112 #endif
 113
 114 #ifdef __mips__
 115 #define mb()            asm volatile(                                   \
 116                                 ".set   mips2\n\t"                      \
 117                                 "sync\n\t"                              \
 118                                 ".set   mips0"                          \
 119                                 : /* no output */                       \
 120                                 : /* no input */                        \
 121                                 : "memory")
 122 #define wmb()   mb()
 123 #define rmb()   mb()
 124 #define CPUINFO_PROC    {"cpu model"}
 125 #endif
 126
 127 #ifdef __arc__
 128 #define mb()            asm volatile("" ::: "memory")
 129 #define wmb()           asm volatile("" ::: "memory")
 130 #define rmb()           asm volatile("" ::: "memory")
 131 #define CPUINFO_PROC    {"Processor"}
 132 #endif
 133
 134 #ifdef __metag__
 135 #define mb()            asm volatile("" ::: "memory")
 136 #define wmb()           asm volatile("" ::: "memory")
 137 #define rmb()           asm volatile("" ::: "memory")
 138 #define CPUINFO_PROC    {"CPU"}
 139 #endif
 140
 141 #ifdef __xtensa__
 142 #define mb()            asm volatile("memw" ::: "memory")
 143 #define wmb()           asm volatile("memw" ::: "memory")
 144 #define rmb()           asm volatile("" ::: "memory")
 145 #define CPUINFO_PROC    {"core ID"}
 146 #endif
 147
 148 #ifdef __tile__
 149 #define mb()            asm volatile ("mf" ::: "memory")
 150 #define wmb()           asm volatile ("mf" ::: "memory")
 151 #define rmb()           asm volatile ("mf" ::: "memory")
 152 #define cpu_relax()     asm volatile ("mfspr zero, PASS" ::: "memory")
 153 #define CPUINFO_PROC    {"model name"}
 154 #endif
 155
 156 #define barrier() asm volatile ("" ::: "memory")
 157
 158 #ifndef cpu_relax
 159 #define cpu_relax() barrier()
 160 #endif
 161
 162 static inline int
 163 sys_perf_event_open(struct perf_event_attr *attr,
 164                       pid_t pid, int cpu, int group_fd,
 165                       unsigned long flags)
 166 {
 167         int fd;
 168
 169         fd = syscall(__NR_perf_event_open, attr, pid, cpu,
 170                      group_fd, flags);
 171
 172 #ifdef HAVE_ATTR_TEST
 173         if (unlikely(test_attr__enabled))
 174                 test_attr__open(attr, pid, cpu, fd, group_fd, flags);
 175 #endif
 176         return fd;
 177 }
 178
 179 #endif /* _PERF_SYS_H */