Use lttng_event_{create, destroy} to manage lttng_event struct
[lttng-tools.git] / src / common / lttng-kernel.h
CommitLineData
93128a92
DG
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 *
d14d33bf
AM
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License, version 2 only,
8 * as published by the Free Software Foundation.
93128a92 9 *
d14d33bf
AM
10 * This program is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * more details.
93128a92 14 *
d14d33bf
AM
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
93128a92
DG
18 */
19
20#ifndef _LTTNG_KERNEL_H
21#define _LTTNG_KERNEL_H
22
e848fc76 23#include <stdint.h>
113373e4 24#include <common/macros.h>
0ef03255
FD
25#include <lttng/constant.h>
26#include <lttng/event.h>
e848fc76 27
dbbb3ec5 28#define LTTNG_KERNEL_SYM_NAME_LEN 256
0ef03255 29#define LTTNG_KERNEL_MAX_UPROBE_NUM 32
9cb98350 30
7d29a247
DG
31/*
32 * LTTng DebugFS ABI structures.
33 *
34 * This is the kernel ABI copied from lttng-modules tree.
35 */
36
9cb98350 37enum lttng_kernel_instrumentation {
5f822d0a 38 LTTNG_KERNEL_ALL = -1, /* Used within lttng-tools */
e6ddca71
DG
39 LTTNG_KERNEL_TRACEPOINT = 0,
40 LTTNG_KERNEL_KPROBE = 1,
41 LTTNG_KERNEL_FUNCTION = 2,
8f0d098b 42 LTTNG_KERNEL_KRETPROBE = 3,
0133c199 43 LTTNG_KERNEL_NOOP = 4, /* not hooked */
a54bd42d 44 LTTNG_KERNEL_SYSCALL = 5,
e6ddca71
DG
45};
46
7d29a247
DG
47enum lttng_kernel_context_type {
48 LTTNG_KERNEL_CONTEXT_PID = 0,
aa3514e9 49 LTTNG_KERNEL_CONTEXT_PERF_CPU_COUNTER = 1,
9197c5c4 50 LTTNG_KERNEL_CONTEXT_PROCNAME = 2,
7d29a247
DG
51 LTTNG_KERNEL_CONTEXT_PRIO = 3,
52 LTTNG_KERNEL_CONTEXT_NICE = 4,
53 LTTNG_KERNEL_CONTEXT_VPID = 5,
54 LTTNG_KERNEL_CONTEXT_TID = 6,
55 LTTNG_KERNEL_CONTEXT_VTID = 7,
56 LTTNG_KERNEL_CONTEXT_PPID = 8,
57 LTTNG_KERNEL_CONTEXT_VPPID = 9,
54773d68 58 LTTNG_KERNEL_CONTEXT_HOSTNAME = 10,
33e801a9 59 LTTNG_KERNEL_CONTEXT_CPU_ID = 11,
1ae5e83e
JD
60 LTTNG_KERNEL_CONTEXT_INTERRUPTIBLE = 12,
61 LTTNG_KERNEL_CONTEXT_PREEMPTIBLE = 13,
62 LTTNG_KERNEL_CONTEXT_NEED_RESCHEDULE = 14,
63 LTTNG_KERNEL_CONTEXT_MIGRATABLE = 15,
373148e9
FG
64 LTTNG_KERNEL_CONTEXT_CALLSTACK_KERNEL = 16,
65 LTTNG_KERNEL_CONTEXT_CALLSTACK_USER = 17,
7d29a247
DG
66};
67
68/* Perf counter attributes */
69struct lttng_kernel_perf_counter_ctx {
70 uint32_t type;
71 uint64_t config;
dbbb3ec5 72 char name[LTTNG_KERNEL_SYM_NAME_LEN];
113373e4 73} LTTNG_PACKED;
7d29a247
DG
74
75/* Event/Channel context */
dbbb3ec5
DG
76#define LTTNG_KERNEL_CONTEXT_PADDING1 16
77#define LTTNG_KERNEL_CONTEXT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
7d29a247
DG
78struct lttng_kernel_context {
79 enum lttng_kernel_context_type ctx;
dbbb3ec5
DG
80 char padding[LTTNG_KERNEL_CONTEXT_PADDING1];
81
7d29a247
DG
82 union {
83 struct lttng_kernel_perf_counter_ctx perf_counter;
dbbb3ec5 84 char padding[LTTNG_KERNEL_CONTEXT_PADDING2];
7d29a247 85 } u;
113373e4 86} LTTNG_PACKED;
9cb98350 87
8f0d098b
MD
88struct lttng_kernel_kretprobe {
89 uint64_t addr;
90
91 uint64_t offset;
dbbb3ec5 92 char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
113373e4 93} LTTNG_PACKED;
8f0d098b 94
93128a92 95/*
7d29a247 96 * Either addr is used, or symbol_name and offset.
93128a92 97 */
7d29a247
DG
98struct lttng_kernel_kprobe {
99 uint64_t addr;
100
101 uint64_t offset;
dbbb3ec5 102 char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
113373e4 103} LTTNG_PACKED;
9cb98350 104
f05b5f07 105/* Function tracer */
7d29a247 106struct lttng_kernel_function {
dbbb3ec5 107 char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
113373e4 108} LTTNG_PACKED;
93128a92 109
dbbb3ec5
DG
110#define LTTNG_KERNEL_EVENT_PADDING1 16
111#define LTTNG_KERNEL_EVENT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
9cb98350 112struct lttng_kernel_event {
dbbb3ec5 113 char name[LTTNG_KERNEL_SYM_NAME_LEN];
9cb98350 114 enum lttng_kernel_instrumentation instrumentation;
dbbb3ec5
DG
115 char padding[LTTNG_KERNEL_EVENT_PADDING1];
116
9cb98350
JD
117 /* Per instrumentation type configuration */
118 union {
8f0d098b 119 struct lttng_kernel_kretprobe kretprobe;
7d29a247
DG
120 struct lttng_kernel_kprobe kprobe;
121 struct lttng_kernel_function ftrace;
dbbb3ec5 122 char padding[LTTNG_KERNEL_EVENT_PADDING2];
9cb98350 123 } u;
113373e4 124} LTTNG_PACKED;
93128a92 125
9cb98350 126struct lttng_kernel_tracer_version {
a62a6556
MD
127 uint32_t major;
128 uint32_t minor;
9cb98350 129 uint32_t patchlevel;
113373e4 130} LTTNG_PACKED;
93128a92 131
c052142c
MD
132struct lttng_kernel_tracer_abi_version {
133 uint32_t major;
134 uint32_t minor;
135} LTTNG_PACKED;
136
e80c3634 137struct lttng_kernel_syscall_mask {
46820c8b 138 uint32_t len; /* in bits */
e80c3634
MD
139 char mask[];
140} LTTNG_PACKED;
141
4dbc372b
JD
142/*
143 * kernel channel
144 */
145#define LTTNG_KERNEL_CHANNEL_PADDING1 LTTNG_SYMBOL_NAME_LEN + 32
146struct lttng_kernel_channel {
147 uint64_t subbuf_size; /* bytes */
148 uint64_t num_subbuf; /* power of 2 */
149 unsigned int switch_timer_interval; /* usec */
150 unsigned int read_timer_interval; /* usec */
151 enum lttng_event_output output; /* splice, mmap */
152
153 int overwrite; /* 1: overwrite, 0: discard */
154 char padding[LTTNG_KERNEL_CHANNEL_PADDING1];
113373e4 155} LTTNG_PACKED;
d0254c7c 156
00a62084
MD
157#define KERNEL_FILTER_BYTECODE_MAX_LEN 65536
158struct lttng_kernel_filter_bytecode {
159 uint32_t len;
160 uint32_t reloc_offset;
161 uint64_t seqnum;
162 char data[0];
163} LTTNG_PACKED;
164
93128a92 165#endif /* _LTTNG_KERNEL_H */
This page took 0.086878 seconds and 4 git commands to generate.