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");
11 #include "../../arch/powerpc/include/asm/unistd.h"
12 #define rmb() asm volatile ("sync" ::: "memory")
13 #define cpu_relax() asm volatile ("" ::: "memory");
18 #include <sys/types.h>
19 #include <sys/syscall.h>
21 #include "../../include/linux/perf_counter.h"
24 * prctl(PR_TASK_PERF_COUNTERS_DISABLE) will (cheaply) disable all
25 * counters in the current task.
27 #define PR_TASK_PERF_COUNTERS_DISABLE 31
28 #define PR_TASK_PERF_COUNTERS_ENABLE 32
31 # define NSEC_PER_SEC 1000000000ULL
34 static inline unsigned long long rdclock(void)
38 clock_gettime(CLOCK_MONOTONIC, &ts);
39 return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
43 * Pick up some kernel type conventions:
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; })
56 sys_perf_counter_open(struct perf_counter_attr *attr,
57 pid_t pid, int cpu, int group_fd,
60 attr->size = sizeof(*attr);
61 return syscall(__NR_perf_counter_open, attr, pid, cpu,
65 #define MAX_COUNTERS 256
66 #define MAX_NR_CPUS 256