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1#ifndef _LINUX_TRACE_CLOCK_H
2#define _LINUX_TRACE_CLOCK_H
3
4/*
5 * 3 trace clock variants, with differing scalability/precision
6 * tradeoffs:
7 *
8 * - local: CPU-local trace clock
9 * - medium: scalable global clock with some jitter
10 * - global: globally monotonic, serialized clock
11 */
12#include <linux/compiler.h>
13#include <linux/types.h>
14
15extern u64 notrace trace_clock_local(void);
16extern u64 notrace trace_clock(void);
17extern u64 notrace trace_clock_global(void);
18
19#endif /* _LINUX_TRACE_CLOCK_H */