projects / lttng-modules.git / blame
| Commit | Line | Data |
|---|---|---|
| db758d11 MD |
1 | /* |
| 2 | * lttng-clock-plugin-test.c | |
| 3 | * | |
| 4 | * Copyright (C) 2014, 2016 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
| 5 | * | |
| 6 | * This library is free software; you can redistribute it and/or | |
| 7 | * modify it under the terms of the GNU Lesser General Public | |
| 8 | * License as published by the Free Software Foundation; only | |
| 9 | * version 2.1 of the License. | |
| 10 | * | |
| 11 | * This library is distributed in the hope that it will be useful, | |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 | * Lesser General Public License for more details. | |
| 15 | * | |
| 16 | * You should have received a copy of the GNU Lesser General Public | |
| 17 | * License along with this library; if not, write to the Free Software | |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 19 | */ | |
| 20 | ||
| 21 | #include <linux/module.h> | |
| 22 | #include <linux/ktime.h> | |
| 23 | #include <linux/hrtimer.h> | |
| 24 | #include <linux/time.h> | |
| 25 | ||
| 1c124020 | 26 | #include <lttng-tracer.h> |
| db758d11 MD |
27 | #include <lttng-clock.h> /* From lttng-modules */ |
| 28 | ||
| 29 | static u64 trace_clock_read64_example(void) | |
| 30 | { | |
| 31 | /* Freeze time. */ | |
| 32 | return 0; | |
| 33 | } | |
| 34 | ||
| 35 | static u64 trace_clock_freq_example(void) | |
| 36 | { | |
| 37 | return 1000; /* 1KHz */ | |
| 38 | } | |
| 39 | ||
| 40 | static int trace_clock_uuid_example(char *uuid) | |
| 41 | { | |
| 42 | const char myuuid[] = "83c63deb-7aa4-48fb-abda-946f400d76e6"; | |
| 43 | memcpy(uuid, myuuid, LTTNG_MODULES_UUID_STR_LEN); | |
| 44 | return 0; | |
| 45 | } | |
| 46 | ||
| 47 | static const char *trace_clock_name_example(void) | |
| 48 | { | |
| 49 | return "lttng_test_clock_override"; | |
| 50 | } | |
| 51 | ||
| 52 | static const char *trace_clock_description_example(void) | |
| 53 | { | |
| 54 | return "Freeze time with 1KHz for regression test"; | |
| 55 | } | |
| 56 | ||
| 57 | static | |
| 58 | struct lttng_trace_clock ltc = { | |
| 59 | .read64 = trace_clock_read64_example, | |
| 60 | .freq = trace_clock_freq_example, | |
| 61 | .uuid = trace_clock_uuid_example, | |
| 62 | .name = trace_clock_name_example, | |
| 63 | .description = trace_clock_description_example, | |
| 64 | }; | |
| 65 | ||
| 66 | static __init | |
| 67 | int lttng_clock_plugin_init(void) | |
| 68 | { | |
| 69 | return lttng_clock_register_plugin(<c, THIS_MODULE); | |
| 70 | } | |
| de0203be | 71 | fs_initcall(lttng_clock_plugin_init); |
| db758d11 MD |
72 | |
| 73 | static __exit | |
| 74 | void lttng_clock_plugin_exit(void) | |
| 75 | { | |
| 76 | lttng_clock_unregister_plugin(<c, THIS_MODULE); | |
| 77 | } | |
| 78 | module_exit(lttng_clock_plugin_exit); | |
| 79 | ||
| 80 | MODULE_LICENSE("GPL and additional rights"); | |
| 81 | MODULE_AUTHOR("Mathieu Desnoyers <mathieu.desnoyers@efficios.com>"); | |
| 82 | MODULE_DESCRIPTION("LTTng Clock Plugin Example"); | |
| 1c124020 MJ |
83 | MODULE_VERSION(__stringify(LTTNG_MODULES_MAJOR_VERSION) "." |
| 84 | __stringify(LTTNG_MODULES_MINOR_VERSION) "." | |
| 85 | __stringify(LTTNG_MODULES_PATCHLEVEL_VERSION) | |
| 86 | LTTNG_MODULES_EXTRAVERSION); |