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[lttng-tools.git] / include / lttng-kernel.h
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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
9bda164d 24#include "lttng-share.h"
93128a92 25
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26#define LTTNG_SYM_NAME_LEN 128
27
28enum lttng_kernel_instrumentation {
29 LTTNG_KERNEL_TRACEPOINTS,
30 LTTNG_KERNEL_KPROBES,
f3ed775e 31 LTTNG_KERNEL_FUNCTION,
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32};
33
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34/*
35 * LTTng DebugFS ABI structures.
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36 *
37 * This is the kernel ABI copied from lttng-modules tree.
93128a92 38 */
9cb98350 39
f3ed775e 40/* Either addr is used or symbol_name and offset. */
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41struct lttng_kernel_kprobe {
42 uint64_t addr;
43
44 uint64_t offset;
45 char symbol_name[LTTNG_SYM_NAME_LEN];
46};
47
48struct lttng_kernel_function_tracer {
49 char symbol_name[LTTNG_SYM_NAME_LEN];
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50};
51
9cb98350 52struct lttng_kernel_event {
f3ed775e 53 char name[LTTNG_SYM_NAME_LEN];
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54 enum lttng_kernel_instrumentation instrumentation;
55 /* Per instrumentation type configuration */
56 union {
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57 struct lttng_kernel_kprobe kprobe;
58 struct lttng_kernel_function_tracer ftrace;
59 } u;
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60};
61
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62struct lttng_kernel_tracer_version {
63 uint32_t version;
64 uint32_t patchlevel;
65 uint32_t sublevel;
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66};
67
68#endif /* _LTTNG_KERNEL_H */
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