[deliverable/linux.git] / include / linux / trace_clock.h

#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 */
Commit	Line	Data
14131f2f IM	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
	15	extern u64 notrace trace_clock_local(void);
	16	extern u64 notrace trace_clock(void);
	17	extern u64 notrace trace_clock_global(void);
	18
	19	#endif /* _LINUX_TRACE_CLOCK_H */