[mirror_ubuntu-bionic-kernel.git] / include / linux / trace_clock.h

/* SPDX-License-Identifier: GPL-2.0 */
#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>

#include <asm/trace_clock.h>

extern u64 notrace trace_clock_local(void);
extern u64 notrace trace_clock(void);
extern u64 notrace trace_clock_jiffies(void);
extern u64 notrace trace_clock_global(void);
extern u64 notrace trace_clock_counter(void);

#endif /* _LINUX_TRACE_CLOCK_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
14131f2f IM	2	#ifndef _LINUX_TRACE_CLOCK_H
	3	#define _LINUX_TRACE_CLOCK_H
	4
	5	/*
	6	* 3 trace clock variants, with differing scalability/precision
	7	* tradeoffs:
	8	*
	9	* - local: CPU-local trace clock
	10	* - medium: scalable global clock with some jitter
	11	* - global: globally monotonic, serialized clock
	12	*/
	13	#include <linux/compiler.h>
	14	#include <linux/types.h>
	15
8cbd9cc6 DS	16	#include <asm/trace_clock.h>
8cbd9cc6 DS	17
14131f2f IM	18	extern u64 notrace trace_clock_local(void);
14131f2f IM	19	extern u64 notrace trace_clock(void);
8aacf017	20	extern u64 notrace trace_clock_jiffies(void);
14131f2f	21	extern u64 notrace trace_clock_global(void);
6249687f	22	extern u64 notrace trace_clock_counter(void);
14131f2f IM	23
14131f2f IM	24	#endif /* _LINUX_TRACE_CLOCK_H */