1 #ifndef __PERF_TSC_H 2 #define __PERF_TSC_H 3 4 #include <linux/types.h> 5 6 #include "event.h" 7 8 struct perf_tsc_conversion { 9 u16 time_shift; 10 u32 time_mult; 11 u64 time_zero; 12 }; 13 struct perf_event_mmap_page; 14 15 int perf_read_tsc_conversion(const struct perf_event_mmap_page *pc, 16 struct perf_tsc_conversion *tc); 17 18 u64 perf_time_to_tsc(u64 ns, struct perf_tsc_conversion *tc); 19 u64 tsc_to_perf_time(u64 cyc, struct perf_tsc_conversion *tc); 20 u64 rdtsc(void); 21 22 struct perf_event_mmap_page; 23 struct perf_tool; 24 struct machine; 25 26 int perf_event__synth_time_conv(const struct perf_event_mmap_page *pc, 27 struct perf_tool *tool, 28 perf_event__handler_t process, 29 struct machine *machine); 30 31 #endif 32