diff options
Diffstat (limited to 'tools/perf/arch/x86/util/tsc.h')
| -rw-r--r-- | tools/perf/arch/x86/util/tsc.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/tools/perf/arch/x86/util/tsc.h b/tools/perf/arch/x86/util/tsc.h new file mode 100644 index 00000000000..2affe0366b5 --- /dev/null +++ b/tools/perf/arch/x86/util/tsc.h @@ -0,0 +1,20 @@ +#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__ */ |