[lttng-modules.git] / include / lttng / clock.h

/* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
 *
 * lttng/clock.h
 *
 * Copyright (C) 2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 */

#ifndef _LTTNG_CLOCK_H
#define _LTTNG_CLOCK_H

#include <linux/module.h>

#define LTTNG_MODULES_UUID_STR_LEN	37

struct lttng_trace_clock {
	u64 (*read64)(void);
	u64 (*freq)(void);
	int (*uuid)(char *uuid);
	const char *(*name)(void);
	const char *(*description)(void);
};

int lttng_clock_register_plugin(struct lttng_trace_clock *ltc,
		struct module *mod);
void lttng_clock_unregister_plugin(struct lttng_trace_clock *ltc,
		struct module *mod);

#endif /* _LTTNG_TRACE_CLOCK_H */
Commit	Line	Data
b7cdc182	1	/* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
9f36eaed	2	*
2df37e95	3	* lttng/clock.h
2754583e MD	4	*
2754583e MD	5	* Copyright (C) 2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
2754583e MD	6	*/
2754583e MD	7
9f36eaed MJ	8	#ifndef _LTTNG_CLOCK_H
	9	#define _LTTNG_CLOCK_H
	10
2754583e MD	11	#include <linux/module.h>
	12
	13	#define LTTNG_MODULES_UUID_STR_LEN 37
	14
	15	struct lttng_trace_clock {
	16	u64 (*read64)(void);
	17	u64 (*freq)(void);
	18	int (uuid)(char uuid);
	19	const char (name)(void);
	20	const char (description)(void);
	21	};
	22
	23	int lttng_clock_register_plugin(struct lttng_trace_clock *ltc,
	24	struct module *mod);
	25	void lttng_clock_unregister_plugin(struct lttng_trace_clock *ltc,
	26	struct module *mod);
	27
	28	#endif /* _LTTNG_TRACE_CLOCK_H */