1 #ifndef _PERF_PERF_H 2 #define _PERF_PERF_H 3 4 #if defined(__i386__) 5 #include "../../arch/x86/include/asm/unistd.h" 6 #define rmb() asm volatile("lock; addl $0,0(%%esp)" ::: "memory") 7 #define cpu_relax() asm volatile("rep; nop" ::: "memory"); 8 #endif 9 10 #if defined(__x86_64__) 11 #include "../../arch/x86/include/asm/unistd.h" 12 #define rmb() asm volatile("lfence" ::: "memory") 13 #define cpu_relax() asm volatile("rep; nop" ::: "memory"); 14 #endif 15 16 #ifdef __powerpc__ 17 #include "../../arch/powerpc/include/asm/unistd.h" 18 #define rmb() asm volatile ("sync" ::: "memory") 19 #define cpu_relax() asm volatile ("" ::: "memory"); 20 #endif 21 22 #ifdef __s390__ 23 #include "../../arch/s390/include/asm/unistd.h" 24 #define rmb() asm volatile("bcr 15,0" ::: "memory") 25 #define cpu_relax() asm volatile("" ::: "memory"); 26 #endif 27 28 #ifdef __sh__ 29 #include "../../arch/sh/include/asm/unistd.h" 30 #if defined(__SH4A__) || defined(__SH5__) 31 # define rmb() asm volatile("synco" ::: "memory") 32 #else 33 # define rmb() asm volatile("" ::: "memory") 34 #endif 35 #define cpu_relax() asm volatile("" ::: "memory") 36 #endif 37 38 #ifdef __hppa__ 39 #include "../../arch/parisc/include/asm/unistd.h" 40 #define rmb() asm volatile("" ::: "memory") 41 #define cpu_relax() asm volatile("" ::: "memory"); 42 #endif 43 44 #include <time.h> 45 #include <unistd.h> 46 #include <sys/types.h> 47 #include <sys/syscall.h> 48 49 #include "../../include/linux/perf_counter.h" 50 #include "util/types.h" 51 52 /* 53 * prctl(PR_TASK_PERF_COUNTERS_DISABLE) will (cheaply) disable all 54 * counters in the current task. 55 */ 56 #define PR_TASK_PERF_COUNTERS_DISABLE 31 57 #define PR_TASK_PERF_COUNTERS_ENABLE 32 58 59 #ifndef NSEC_PER_SEC 60 # define NSEC_PER_SEC 1000000000ULL 61 #endif 62 63 static inline unsigned long long rdclock(void) 64 { 65 struct timespec ts; 66 67 clock_gettime(CLOCK_MONOTONIC, &ts); 68 return ts.tv_sec * 1000000000ULL + ts.tv_nsec; 69 } 70 71 /* 72 * Pick up some kernel type conventions: 73 */ 74 #define __user 75 #define asmlinkage 76 77 #define __used __attribute__((__unused__)) 78 79 #define unlikely(x) __builtin_expect(!!(x), 0) 80 #define min(x, y) ({ \ 81 typeof(x) _min1 = (x); \ 82 typeof(y) _min2 = (y); \ 83 (void) (&_min1 == &_min2); \ 84 _min1 < _min2 ? _min1 : _min2; }) 85 86 static inline int 87 sys_perf_counter_open(struct perf_counter_attr *attr, 88 pid_t pid, int cpu, int group_fd, 89 unsigned long flags) 90 { 91 attr->size = sizeof(*attr); 92 return syscall(__NR_perf_counter_open, attr, pid, cpu, 93 group_fd, flags); 94 } 95 96 #define MAX_COUNTERS 256 97 #define MAX_NR_CPUS 256 98 99 struct ip_callchain { 100 u64 nr; 101 u64 ips[0]; 102 }; 103 104 #endif 105