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