Minor fixes to header files
[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
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8 * as published by the Free Software Foundation; only version 2
9 * of the License.
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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
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24#include <stdint.h>
25
26#include <lttng-share.h>
93128a92 27
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28#define LTTNG_SYM_NAME_LEN 128
29
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30/*
31 * LTTng DebugFS ABI structures.
32 *
33 * This is the kernel ABI copied from lttng-modules tree.
34 */
35
9cb98350 36enum lttng_kernel_instrumentation {
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37 LTTNG_KERNEL_TRACEPOINT = 0,
38 LTTNG_KERNEL_KPROBE = 1,
39 LTTNG_KERNEL_FUNCTION = 2,
8f0d098b 40 LTTNG_KERNEL_KRETPROBE = 3,
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41};
42
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43enum lttng_kernel_context_type {
44 LTTNG_KERNEL_CONTEXT_PID = 0,
45 LTTNG_KERNEL_CONTEXT_PERF_COUNTER = 1,
46 LTTNG_KERNEL_CONTEXT_COMM = 2,
47 LTTNG_KERNEL_CONTEXT_PRIO = 3,
48 LTTNG_KERNEL_CONTEXT_NICE = 4,
49 LTTNG_KERNEL_CONTEXT_VPID = 5,
50 LTTNG_KERNEL_CONTEXT_TID = 6,
51 LTTNG_KERNEL_CONTEXT_VTID = 7,
52 LTTNG_KERNEL_CONTEXT_PPID = 8,
53 LTTNG_KERNEL_CONTEXT_VPPID = 9,
54};
55
56/* Perf counter attributes */
57struct lttng_kernel_perf_counter_ctx {
58 uint32_t type;
59 uint64_t config;
e848fc76 60 char name[LTTNG_SYM_NAME_LEN];
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61};
62
63/* Event/Channel context */
64struct lttng_kernel_context {
65 enum lttng_kernel_context_type ctx;
66 union {
67 struct lttng_kernel_perf_counter_ctx perf_counter;
68 } u;
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69};
70
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71struct lttng_kernel_kretprobe {
72 uint64_t addr;
73
74 uint64_t offset;
75 char symbol_name[LTTNG_SYM_NAME_LEN];
76};
77
93128a92 78/*
7d29a247 79 * Either addr is used, or symbol_name and offset.
93128a92 80 */
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81struct lttng_kernel_kprobe {
82 uint64_t addr;
83
84 uint64_t offset;
85 char symbol_name[LTTNG_SYM_NAME_LEN];
86};
9cb98350 87
f05b5f07 88/* Function tracer */
7d29a247 89struct lttng_kernel_function {
9cb98350 90 char symbol_name[LTTNG_SYM_NAME_LEN];
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91};
92
9cb98350 93struct lttng_kernel_event {
f3ed775e 94 char name[LTTNG_SYM_NAME_LEN];
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95 enum lttng_kernel_instrumentation instrumentation;
96 /* Per instrumentation type configuration */
97 union {
8f0d098b 98 struct lttng_kernel_kretprobe kretprobe;
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99 struct lttng_kernel_kprobe kprobe;
100 struct lttng_kernel_function ftrace;
9cb98350 101 } u;
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102};
103
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104struct lttng_kernel_tracer_version {
105 uint32_t version;
106 uint32_t patchlevel;
107 uint32_t sublevel;
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108};
109
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110enum lttng_kernel_calibrate_type {
111 LTTNG_KERNEL_CALIBRATE_KRETPROBE,
112};
113
114struct lttng_kernel_calibrate {
115 enum lttng_kernel_calibrate_type type; /* type (input) */
116};
117
93128a92 118#endif /* _LTTNG_KERNEL_H */
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