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