Support LTTNG_KERNEL_SESSION_SET_NAME of lttng-modules
[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
8ff4109e 30#define LTTNG_KERNEL_SESSION_NAME_LEN 256
9cb98350 31
7d29a247
DG
32/*
33 * LTTng DebugFS ABI structures.
34 *
35 * This is the kernel ABI copied from lttng-modules tree.
36 */
37
9cb98350 38enum lttng_kernel_instrumentation {
5f822d0a 39 LTTNG_KERNEL_ALL = -1, /* Used within lttng-tools */
e6ddca71
DG
40 LTTNG_KERNEL_TRACEPOINT = 0,
41 LTTNG_KERNEL_KPROBE = 1,
42 LTTNG_KERNEL_FUNCTION = 2,
8f0d098b 43 LTTNG_KERNEL_KRETPROBE = 3,
0133c199 44 LTTNG_KERNEL_NOOP = 4, /* not hooked */
a54bd42d 45 LTTNG_KERNEL_SYSCALL = 5,
1ab8c2ad 46 LTTNG_KERNEL_UPROBE = 6,
e6ddca71
DG
47};
48
7d29a247
DG
49enum lttng_kernel_context_type {
50 LTTNG_KERNEL_CONTEXT_PID = 0,
aa3514e9 51 LTTNG_KERNEL_CONTEXT_PERF_CPU_COUNTER = 1,
9197c5c4 52 LTTNG_KERNEL_CONTEXT_PROCNAME = 2,
7d29a247
DG
53 LTTNG_KERNEL_CONTEXT_PRIO = 3,
54 LTTNG_KERNEL_CONTEXT_NICE = 4,
55 LTTNG_KERNEL_CONTEXT_VPID = 5,
56 LTTNG_KERNEL_CONTEXT_TID = 6,
57 LTTNG_KERNEL_CONTEXT_VTID = 7,
58 LTTNG_KERNEL_CONTEXT_PPID = 8,
59 LTTNG_KERNEL_CONTEXT_VPPID = 9,
54773d68 60 LTTNG_KERNEL_CONTEXT_HOSTNAME = 10,
33e801a9 61 LTTNG_KERNEL_CONTEXT_CPU_ID = 11,
1ae5e83e
JD
62 LTTNG_KERNEL_CONTEXT_INTERRUPTIBLE = 12,
63 LTTNG_KERNEL_CONTEXT_PREEMPTIBLE = 13,
64 LTTNG_KERNEL_CONTEXT_NEED_RESCHEDULE = 14,
65 LTTNG_KERNEL_CONTEXT_MIGRATABLE = 15,
373148e9
FG
66 LTTNG_KERNEL_CONTEXT_CALLSTACK_KERNEL = 16,
67 LTTNG_KERNEL_CONTEXT_CALLSTACK_USER = 17,
7d29a247
DG
68};
69
70/* Perf counter attributes */
71struct lttng_kernel_perf_counter_ctx {
72 uint32_t type;
73 uint64_t config;
dbbb3ec5 74 char name[LTTNG_KERNEL_SYM_NAME_LEN];
113373e4 75} LTTNG_PACKED;
7d29a247
DG
76
77/* Event/Channel context */
dbbb3ec5
DG
78#define LTTNG_KERNEL_CONTEXT_PADDING1 16
79#define LTTNG_KERNEL_CONTEXT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
7d29a247
DG
80struct lttng_kernel_context {
81 enum lttng_kernel_context_type ctx;
dbbb3ec5
DG
82 char padding[LTTNG_KERNEL_CONTEXT_PADDING1];
83
7d29a247
DG
84 union {
85 struct lttng_kernel_perf_counter_ctx perf_counter;
dbbb3ec5 86 char padding[LTTNG_KERNEL_CONTEXT_PADDING2];
7d29a247 87 } u;
113373e4 88} LTTNG_PACKED;
9cb98350 89
8f0d098b
MD
90struct lttng_kernel_kretprobe {
91 uint64_t addr;
92
93 uint64_t offset;
dbbb3ec5 94 char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
113373e4 95} LTTNG_PACKED;
8f0d098b 96
93128a92 97/*
7d29a247 98 * Either addr is used, or symbol_name and offset.
93128a92 99 */
7d29a247
DG
100struct lttng_kernel_kprobe {
101 uint64_t addr;
102
103 uint64_t offset;
dbbb3ec5 104 char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
113373e4 105} LTTNG_PACKED;
9cb98350 106
1ab8c2ad
FD
107struct lttng_kernel_uprobe {
108 int fd;
109} LTTNG_PACKED;
110
111struct lttng_kernel_event_callsite_uprobe {
112 uint64_t offset;
113} LTTNG_PACKED;
114
115struct lttng_kernel_event_callsite {
116 union {
117 struct lttng_kernel_event_callsite_uprobe uprobe;
118 } u;
119} LTTNG_PACKED;
120
f05b5f07 121/* Function tracer */
7d29a247 122struct lttng_kernel_function {
dbbb3ec5 123 char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
113373e4 124} LTTNG_PACKED;
93128a92 125
dbbb3ec5
DG
126#define LTTNG_KERNEL_EVENT_PADDING1 16
127#define LTTNG_KERNEL_EVENT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
9cb98350 128struct lttng_kernel_event {
dbbb3ec5 129 char name[LTTNG_KERNEL_SYM_NAME_LEN];
9cb98350 130 enum lttng_kernel_instrumentation instrumentation;
dbbb3ec5
DG
131 char padding[LTTNG_KERNEL_EVENT_PADDING1];
132
9cb98350
JD
133 /* Per instrumentation type configuration */
134 union {
8f0d098b 135 struct lttng_kernel_kretprobe kretprobe;
7d29a247 136 struct lttng_kernel_kprobe kprobe;
1ab8c2ad 137 struct lttng_kernel_uprobe uprobe;
7d29a247 138 struct lttng_kernel_function ftrace;
dbbb3ec5 139 char padding[LTTNG_KERNEL_EVENT_PADDING2];
9cb98350 140 } u;
113373e4 141} LTTNG_PACKED;
93128a92 142
9cb98350 143struct lttng_kernel_tracer_version {
a62a6556
MD
144 uint32_t major;
145 uint32_t minor;
9cb98350 146 uint32_t patchlevel;
113373e4 147} LTTNG_PACKED;
93128a92 148
c052142c
MD
149struct lttng_kernel_tracer_abi_version {
150 uint32_t major;
151 uint32_t minor;
152} LTTNG_PACKED;
153
e80c3634 154struct lttng_kernel_syscall_mask {
46820c8b 155 uint32_t len; /* in bits */
e80c3634
MD
156 char mask[];
157} LTTNG_PACKED;
158
4dbc372b
JD
159/*
160 * kernel channel
161 */
162#define LTTNG_KERNEL_CHANNEL_PADDING1 LTTNG_SYMBOL_NAME_LEN + 32
163struct lttng_kernel_channel {
164 uint64_t subbuf_size; /* bytes */
165 uint64_t num_subbuf; /* power of 2 */
166 unsigned int switch_timer_interval; /* usec */
167 unsigned int read_timer_interval; /* usec */
168 enum lttng_event_output output; /* splice, mmap */
169
170 int overwrite; /* 1: overwrite, 0: discard */
171 char padding[LTTNG_KERNEL_CHANNEL_PADDING1];
113373e4 172} LTTNG_PACKED;
d0254c7c 173
00a62084
MD
174#define KERNEL_FILTER_BYTECODE_MAX_LEN 65536
175struct lttng_kernel_filter_bytecode {
176 uint32_t len;
177 uint32_t reloc_offset;
178 uint64_t seqnum;
179 char data[0];
180} LTTNG_PACKED;
181
8ff4109e
JR
182/*
183 * kernel session name
184 */
185struct lttng_kernel_session_name {
186 char name[LTTNG_KERNEL_SESSION_NAME_LEN];
187} LTTNG_PACKED;
188
93128a92 189#endif /* _LTTNG_KERNEL_H */
This page took 0.10739 seconds and 4 git commands to generate.