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 #include <time.h> 23 #include <unistd.h> 24 #include <sys/types.h> 25 #include <sys/syscall.h> 26 27 #include "../../include/linux/perf_counter.h" 28 #include "types.h" 29 30 /* 31 * prctl(PR_TASK_PERF_COUNTERS_DISABLE) will (cheaply) disable all 32 * counters in the current task. 33 */ 34 #define PR_TASK_PERF_COUNTERS_DISABLE 31 35 #define PR_TASK_PERF_COUNTERS_ENABLE 32 36 37 #ifndef NSEC_PER_SEC 38 # define NSEC_PER_SEC 1000000000ULL 39 #endif 40 41 static inline unsigned long long rdclock(void) 42 { 43 struct timespec ts; 44 45 clock_gettime(CLOCK_MONOTONIC, &ts); 46 return ts.tv_sec * 1000000000ULL + ts.tv_nsec; 47 } 48 49 /* 50 * Pick up some kernel type conventions: 51 */ 52 #define __user 53 #define asmlinkage 54 55 #define unlikely(x) __builtin_expect(!!(x), 0) 56 #define min(x, y) ({ \ 57 typeof(x) _min1 = (x); \ 58 typeof(y) _min2 = (y); \ 59 (void) (&_min1 == &_min2); \ 60 _min1 < _min2 ? _min1 : _min2; }) 61 62 static inline int 63 sys_perf_counter_open(struct perf_counter_attr *attr, 64 pid_t pid, int cpu, int group_fd, 65 unsigned long flags) 66 { 67 attr->size = sizeof(*attr); 68 return syscall(__NR_perf_counter_open, attr, pid, cpu, 69 group_fd, flags); 70 } 71 72 #define MAX_COUNTERS 256 73 #define MAX_NR_CPUS 256 74 75 struct perf_file_header { 76 u64 version; 77 u64 sample_type; 78 u64 data_size; 79 }; 80 81 #endif 82