#ifndef TOOLS_PERF_ARCH_X86_UTIL_TSC_H__ | |
#define TOOLS_PERF_ARCH_X86_UTIL_TSC_H__ | |
#include <linux/types.h> | |
struct perf_tsc_conversion { | |
u16 time_shift; | |
u32 time_mult; | |
u64 time_zero; | |
}; | |
struct perf_event_mmap_page; | |
int perf_read_tsc_conversion(const struct perf_event_mmap_page *pc, | |
struct perf_tsc_conversion *tc); | |
u64 perf_time_to_tsc(u64 ns, struct perf_tsc_conversion *tc); | |
u64 tsc_to_perf_time(u64 cyc, struct perf_tsc_conversion *tc); | |
#endif /* TOOLS_PERF_ARCH_X86_UTIL_TSC_H__ */ |