65 lines
1.5 KiB
C
65 lines
1.5 KiB
C
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#ifndef _PERF_PERF_H
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#define _PERF_PERF_H
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/*
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* prctl(PR_TASK_PERF_COUNTERS_DISABLE) will (cheaply) disable all
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* counters in the current task.
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*/
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#define PR_TASK_PERF_COUNTERS_DISABLE 31
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#define PR_TASK_PERF_COUNTERS_ENABLE 32
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#define rdclock() \
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({ \
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struct timespec ts; \
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\
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clock_gettime(CLOCK_MONOTONIC, &ts); \
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ts.tv_sec * 1000000000ULL + ts.tv_nsec; \
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})
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/*
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* Pick up some kernel type conventions:
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*/
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#define __user
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#define asmlinkage
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#ifdef __x86_64__
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#define __NR_perf_counter_open 298
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#define rmb() asm volatile("lfence" ::: "memory")
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#define cpu_relax() asm volatile("rep; nop" ::: "memory");
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#endif
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#ifdef __i386__
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#define __NR_perf_counter_open 336
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#define rmb() asm volatile("lfence" ::: "memory")
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#define cpu_relax() asm volatile("rep; nop" ::: "memory");
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#endif
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#ifdef __powerpc__
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#define __NR_perf_counter_open 319
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#define rmb() asm volatile ("sync" ::: "memory")
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#define cpu_relax() asm volatile ("" ::: "memory");
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#endif
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#define unlikely(x) __builtin_expect(!!(x), 0)
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#define min(x, y) ({ \
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typeof(x) _min1 = (x); \
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typeof(y) _min2 = (y); \
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(void) (&_min1 == &_min2); \
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_min1 < _min2 ? _min1 : _min2; })
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static inline int
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sys_perf_counter_open(struct perf_counter_hw_event *hw_event_uptr,
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pid_t pid, int cpu, int group_fd,
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unsigned long flags)
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{
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return syscall(__NR_perf_counter_open, hw_event_uptr, pid, cpu,
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group_fd, flags);
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}
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#define MAX_COUNTERS 64
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#define MAX_NR_CPUS 256
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#define EID(type, id) (((__u64)(type) << PERF_COUNTER_TYPE_SHIFT) | (id))
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#endif
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