Major changes
[lttng-tools.git] / include / lttng-kernel.h
1 /*
2 * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca>
3 * Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
4 * David Goulet <david.goulet@polymtl.ca>
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 *
11 * This program 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
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 */
20
21 #ifndef _LTTNG_KERNEL_H
22 #define _LTTNG_KERNEL_H
23
24 #include "lttng-share.h"
25
26 #define LTTNG_SYM_NAME_LEN 128
27
28 enum lttng_kernel_instrumentation {
29 LTTNG_KERNEL_TRACEPOINTS,
30 LTTNG_KERNEL_KPROBES,
31 LTTNG_KERNEL_FUNCTION,
32 };
33
34 /*
35 * LTTng DebugFS ABI structures.
36 *
37 * This is the kernel ABI copied from lttng-modules tree.
38 */
39
40 /* Either addr is used or symbol_name and offset. */
41 struct lttng_kernel_kprobe {
42 uint64_t addr;
43
44 uint64_t offset;
45 char symbol_name[LTTNG_SYM_NAME_LEN];
46 };
47
48 struct lttng_kernel_function_tracer {
49 char symbol_name[LTTNG_SYM_NAME_LEN];
50 };
51
52 struct lttng_kernel_event {
53 char name[LTTNG_SYM_NAME_LEN];
54 enum lttng_kernel_instrumentation instrumentation;
55 /* Per instrumentation type configuration */
56 union {
57 struct lttng_kernel_kprobe kprobe;
58 struct lttng_kernel_function_tracer ftrace;
59 } u;
60 };
61
62 struct lttng_kernel_tracer_version {
63 uint32_t version;
64 uint32_t patchlevel;
65 uint32_t sublevel;
66 };
67
68 #endif /* _LTTNG_KERNEL_H */
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