5 * prctl(PR_TASK_PERF_COUNTERS_DISABLE) will (cheaply) disable all
6 * counters in the current task.
8 #define PR_TASK_PERF_COUNTERS_DISABLE 31
9 #define PR_TASK_PERF_COUNTERS_ENABLE 32
12 # define NSEC_PER_SEC 1000000000ULL
15 static inline unsigned long long rdclock(void)
19 clock_gettime(CLOCK_MONOTONIC
, &ts
);
20 return ts
.tv_sec
* 1000000000ULL + ts
.tv_nsec
;
24 * Pick up some kernel type conventions:
29 #if defined(__x86_64__) || defined(__i386__)
30 #include "../../arch/x86/include/asm/unistd.h"
31 #define rmb() asm volatile("lfence" ::: "memory")
32 #define cpu_relax() asm volatile("rep; nop" ::: "memory");
36 #include "../../arch/powerpc/include/asm/unistd.h"
37 #define rmb() asm volatile ("sync" ::: "memory")
38 #define cpu_relax() asm volatile ("" ::: "memory");
41 #define unlikely(x) __builtin_expect(!!(x), 0)
42 #define min(x, y) ({ \
43 typeof(x) _min1 = (x); \
44 typeof(y) _min2 = (y); \
45 (void) (&_min1 == &_min2); \
46 _min1 < _min2 ? _min1 : _min2; })
49 sys_perf_counter_open(struct perf_counter_hw_event
*hw_event_uptr
,
50 pid_t pid
, int cpu
, int group_fd
,
53 return syscall(__NR_perf_counter_open
, hw_event_uptr
, pid
, cpu
,
57 #define MAX_COUNTERS 64
58 #define MAX_NR_CPUS 256
60 #define EID(type, id) (((__u64)(type) << PERF_COUNTER_TYPE_SHIFT) | (id))