Commit | Line | Data |
---|---|---|
12359e45 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 | ||
26 | #include <lttng-clock.h> /* From lttng-modules */ | |
27 | ||
28 | static u64 trace_clock_read64_example(void) | |
29 | { | |
30 | /* Freeze time. */ | |
31 | return 0; | |
32 | } | |
33 | ||
34 | static u64 trace_clock_freq_example(void) | |
35 | { | |
36 | return 1000; /* 1KHz */ | |
37 | } | |
38 | ||
39 | static int trace_clock_uuid_example(char *uuid) | |
40 | { | |
41 | const char myuuid[] = "83c63deb-7aa4-48fb-abda-946f400d76e6"; | |
42 | memcpy(uuid, myuuid, LTTNG_MODULES_UUID_STR_LEN); | |
43 | return 0; | |
44 | } | |
45 | ||
46 | static const char *trace_clock_name_example(void) | |
47 | { | |
48 | return "lttng_test_clock_override"; | |
49 | } | |
50 | ||
51 | static const char *trace_clock_description_example(void) | |
52 | { | |
53 | return "Freeze time with 1KHz for regression test"; | |
54 | } | |
55 | ||
56 | static | |
57 | struct lttng_trace_clock ltc = { | |
58 | .read64 = trace_clock_read64_example, | |
59 | .freq = trace_clock_freq_example, | |
60 | .uuid = trace_clock_uuid_example, | |
61 | .name = trace_clock_name_example, | |
62 | .description = trace_clock_description_example, | |
63 | }; | |
64 | ||
65 | static __init | |
66 | int lttng_clock_plugin_init(void) | |
67 | { | |
68 | return lttng_clock_register_plugin(<c, THIS_MODULE); | |
69 | } | |
70 | module_init(lttng_clock_plugin_init); | |
71 | ||
72 | static __exit | |
73 | void lttng_clock_plugin_exit(void) | |
74 | { | |
75 | lttng_clock_unregister_plugin(<c, THIS_MODULE); | |
76 | } | |
77 | module_exit(lttng_clock_plugin_exit); | |
78 | ||
79 | MODULE_LICENSE("GPL and additional rights"); | |
80 | MODULE_AUTHOR("Mathieu Desnoyers <mathieu.desnoyers@efficios.com>"); | |
81 | MODULE_DESCRIPTION("LTTng Clock Plugin Example"); |