| #ifndef _LINUX_TRACE_CLOCK_H | |
| #define _LINUX_TRACE_CLOCK_H | |
| /* | |
| * 3 trace clock variants, with differing scalability/precision | |
| * tradeoffs: | |
| * | |
| * - local: CPU-local trace clock | |
| * - medium: scalable global clock with some jitter | |
| * - global: globally monotonic, serialized clock | |
| */ | |
| #include <linux/compiler.h> | |
| #include <linux/types.h> | |
| extern u64 notrace trace_clock_local(void); | |
| extern u64 notrace trace_clock(void); | |
| extern u64 notrace trace_clock_global(void); | |
| #endif /* _LINUX_TRACE_CLOCK_H */ |