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 #include <time.h> 17 #include <unistd.h> 18 #include <sys/types.h> 19 #include <sys/syscall.h> 20 21 #include "../../include/linux/perf_counter.h" 22 23 /* 24 * prctl(PR_TASK_PERF_COUNTERS_DISABLE) will (cheaply) disable all 25 * counters in the current task. 26 */ 27 #define PR_TASK_PERF_COUNTERS_DISABLE 31 28 #define PR_TASK_PERF_COUNTERS_ENABLE 32 29 30 #ifndef NSEC_PER_SEC 31 # define NSEC_PER_SEC 1000000000ULL 32 #endif 33 34 static inline unsigned long long rdclock(void) 35 { 36 struct timespec ts; 37 38 clock_gettime(CLOCK_MONOTONIC, &ts); 39 return ts.tv_sec * 1000000000ULL + ts.tv_nsec; 40 } 41 42 /* 43 * Pick up some kernel type conventions: 44 */ 45 #define __user 46 #define asmlinkage 47 48 #define unlikely(x) __builtin_expect(!!(x), 0) 49 #define min(x, y) ({ \ 50 typeof(x) _min1 = (x); \ 51 typeof(y) _min2 = (y); \ 52 (void) (&_min1 == &_min2); \ 53 _min1 < _min2 ? _min1 : _min2; }) 54 55 static inline int 56 sys_perf_counter_open(struct perf_counter_attr *attr_uptr, 57 pid_t pid, int cpu, int group_fd, 58 unsigned long flags) 59 { 60 return syscall(__NR_perf_counter_open, attr_uptr, pid, cpu, 61 group_fd, flags); 62 } 63 64 #define MAX_COUNTERS 256 65 #define MAX_NR_CPUS 256 66 67 #endif 68