1 #ifndef _PERF_PERF_H 2 #define _PERF_PERF_H 3 4 #if defined(__x86_64__) || defined(__i386__) 5 #include "../../arch/x86/include/asm/unistd.h" 6 #define rmb() asm volatile("lfence" ::: "memory") 7 #define cpu_relax() asm volatile("rep; nop" ::: "memory"); 8 #endif 9 10 #ifdef __powerpc__ 11 #include "../../arch/powerpc/include/asm/unistd.h" 12 #define rmb() asm volatile ("sync" ::: "memory") 13 #define cpu_relax() asm volatile ("" ::: "memory"); 14 #endif 15 16 #ifdef __s390__ 17 #include "../../arch/s390/include/asm/unistd.h" 18 #define rmb() asm volatile("bcr 15,0" ::: "memory") 19 #define cpu_relax() asm volatile("" ::: "memory"); 20 #endif 21 22 #ifdef __sh__ 23 #include "../../arch/sh/include/asm/unistd.h" 24 #if defined(__SH4A__) || defined(__SH5__) 25 # define rmb() asm volatile("synco" ::: "memory") 26 #else 27 # define rmb() asm volatile("" ::: "memory") 28 #endif 29 #define cpu_relax() asm volatile("" ::: "memory") 30 #endif 31 32 #ifdef __hppa__ 33 #include "../../arch/parisc/include/asm/unistd.h" 34 #define rmb() asm volatile("" ::: "memory") 35 #define cpu_relax() asm volatile("" ::: "memory"); 36 #endif 37 38 #include <time.h> 39 #include <unistd.h> 40 #include <sys/types.h> 41 #include <sys/syscall.h> 42 43 #include "../../include/linux/perf_counter.h" 44 #include "util/types.h" 45 46 /* 47 * prctl(PR_TASK_PERF_COUNTERS_DISABLE) will (cheaply) disable all 48 * counters in the current task. 49 */ 50 #define PR_TASK_PERF_COUNTERS_DISABLE 31 51 #define PR_TASK_PERF_COUNTERS_ENABLE 32 52 53 #ifndef NSEC_PER_SEC 54 # define NSEC_PER_SEC 1000000000ULL 55 #endif 56 57 static inline unsigned long long rdclock(void) 58 { 59 struct timespec ts; 60 61 clock_gettime(CLOCK_MONOTONIC, &ts); 62 return ts.tv_sec * 1000000000ULL + ts.tv_nsec; 63 } 64 65 /* 66 * Pick up some kernel type conventions: 67 */ 68 #define __user 69 #define asmlinkage 70 71 #define __used __attribute__((__unused__)) 72 73 #define unlikely(x) __builtin_expect(!!(x), 0) 74 #define min(x, y) ({ \ 75 typeof(x) _min1 = (x); \ 76 typeof(y) _min2 = (y); \ 77 (void) (&_min1 == &_min2); \ 78 _min1 < _min2 ? _min1 : _min2; }) 79 80 static inline int 81 sys_perf_counter_open(struct perf_counter_attr *attr, 82 pid_t pid, int cpu, int group_fd, 83 unsigned long flags) 84 { 85 attr->size = sizeof(*attr); 86 return syscall(__NR_perf_counter_open, attr, pid, cpu, 87 group_fd, flags); 88 } 89 90 #define MAX_COUNTERS 256 91 #define MAX_NR_CPUS 256 92 93 struct ip_callchain { 94 u64 nr; 95 u64 ips[0]; 96 }; 97 98 #endif 99