| 1 | /* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only) |
| 2 | * |
| 3 | * lttng/clock.h |
| 4 | * |
| 5 | * Copyright (C) 2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 6 | */ |
| 7 | |
| 8 | #ifndef _LTTNG_CLOCK_H |
| 9 | #define _LTTNG_CLOCK_H |
| 10 | |
| 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 */ |