Update local copy of ust-abi.h to reflect addition of ns contexts
[lttng-tools.git] / src / common / 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 *
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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 *
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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 *
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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.
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18 */
19
20#ifndef _LTTNG_KERNEL_H
21#define _LTTNG_KERNEL_H
22
e848fc76 23#include <stdint.h>
113373e4 24#include <common/macros.h>
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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
e04b2181 31#define LTTNG_KERNEL_SESSION_CREATION_TIME_ISO8601_LEN 26
9cb98350 32
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33/*
34 * LTTng DebugFS ABI structures.
35 *
36 * This is the kernel ABI copied from lttng-modules tree.
37 */
38
9cb98350 39enum lttng_kernel_instrumentation {
5f822d0a 40 LTTNG_KERNEL_ALL = -1, /* Used within lttng-tools */
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41 LTTNG_KERNEL_TRACEPOINT = 0,
42 LTTNG_KERNEL_KPROBE = 1,
43 LTTNG_KERNEL_FUNCTION = 2,
8f0d098b 44 LTTNG_KERNEL_KRETPROBE = 3,
0133c199 45 LTTNG_KERNEL_NOOP = 4, /* not hooked */
a54bd42d 46 LTTNG_KERNEL_SYSCALL = 5,
1ab8c2ad 47 LTTNG_KERNEL_UPROBE = 6,
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48};
49
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50enum lttng_kernel_context_type {
51 LTTNG_KERNEL_CONTEXT_PID = 0,
aa3514e9 52 LTTNG_KERNEL_CONTEXT_PERF_CPU_COUNTER = 1,
9197c5c4 53 LTTNG_KERNEL_CONTEXT_PROCNAME = 2,
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54 LTTNG_KERNEL_CONTEXT_PRIO = 3,
55 LTTNG_KERNEL_CONTEXT_NICE = 4,
56 LTTNG_KERNEL_CONTEXT_VPID = 5,
57 LTTNG_KERNEL_CONTEXT_TID = 6,
58 LTTNG_KERNEL_CONTEXT_VTID = 7,
59 LTTNG_KERNEL_CONTEXT_PPID = 8,
60 LTTNG_KERNEL_CONTEXT_VPPID = 9,
54773d68 61 LTTNG_KERNEL_CONTEXT_HOSTNAME = 10,
33e801a9 62 LTTNG_KERNEL_CONTEXT_CPU_ID = 11,
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63 LTTNG_KERNEL_CONTEXT_INTERRUPTIBLE = 12,
64 LTTNG_KERNEL_CONTEXT_PREEMPTIBLE = 13,
65 LTTNG_KERNEL_CONTEXT_NEED_RESCHEDULE = 14,
66 LTTNG_KERNEL_CONTEXT_MIGRATABLE = 15,
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67 LTTNG_KERNEL_CONTEXT_CALLSTACK_KERNEL = 16,
68 LTTNG_KERNEL_CONTEXT_CALLSTACK_USER = 17,
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69};
70
71/* Perf counter attributes */
72struct lttng_kernel_perf_counter_ctx {
73 uint32_t type;
74 uint64_t config;
dbbb3ec5 75 char name[LTTNG_KERNEL_SYM_NAME_LEN];
113373e4 76} LTTNG_PACKED;
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77
78/* Event/Channel context */
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79#define LTTNG_KERNEL_CONTEXT_PADDING1 16
80#define LTTNG_KERNEL_CONTEXT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
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81struct lttng_kernel_context {
82 enum lttng_kernel_context_type ctx;
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83 char padding[LTTNG_KERNEL_CONTEXT_PADDING1];
84
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85 union {
86 struct lttng_kernel_perf_counter_ctx perf_counter;
dbbb3ec5 87 char padding[LTTNG_KERNEL_CONTEXT_PADDING2];
7d29a247 88 } u;
113373e4 89} LTTNG_PACKED;
9cb98350 90
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91struct lttng_kernel_kretprobe {
92 uint64_t addr;
93
94 uint64_t offset;
dbbb3ec5 95 char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
113373e4 96} LTTNG_PACKED;
8f0d098b 97
93128a92 98/*
7d29a247 99 * Either addr is used, or symbol_name and offset.
93128a92 100 */
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101struct lttng_kernel_kprobe {
102 uint64_t addr;
103
104 uint64_t offset;
dbbb3ec5 105 char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
113373e4 106} LTTNG_PACKED;
9cb98350 107
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108struct lttng_kernel_uprobe {
109 int fd;
110} LTTNG_PACKED;
111
112struct lttng_kernel_event_callsite_uprobe {
113 uint64_t offset;
114} LTTNG_PACKED;
115
116struct lttng_kernel_event_callsite {
117 union {
118 struct lttng_kernel_event_callsite_uprobe uprobe;
119 } u;
120} LTTNG_PACKED;
121
f05b5f07 122/* Function tracer */
7d29a247 123struct lttng_kernel_function {
dbbb3ec5 124 char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
113373e4 125} LTTNG_PACKED;
93128a92 126
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127#define LTTNG_KERNEL_EVENT_PADDING1 16
128#define LTTNG_KERNEL_EVENT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
9cb98350 129struct lttng_kernel_event {
dbbb3ec5 130 char name[LTTNG_KERNEL_SYM_NAME_LEN];
9cb98350 131 enum lttng_kernel_instrumentation instrumentation;
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132 char padding[LTTNG_KERNEL_EVENT_PADDING1];
133
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134 /* Per instrumentation type configuration */
135 union {
8f0d098b 136 struct lttng_kernel_kretprobe kretprobe;
7d29a247 137 struct lttng_kernel_kprobe kprobe;
1ab8c2ad 138 struct lttng_kernel_uprobe uprobe;
7d29a247 139 struct lttng_kernel_function ftrace;
dbbb3ec5 140 char padding[LTTNG_KERNEL_EVENT_PADDING2];
9cb98350 141 } u;
113373e4 142} LTTNG_PACKED;
93128a92 143
9cb98350 144struct lttng_kernel_tracer_version {
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145 uint32_t major;
146 uint32_t minor;
9cb98350 147 uint32_t patchlevel;
113373e4 148} LTTNG_PACKED;
93128a92 149
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150struct lttng_kernel_tracer_abi_version {
151 uint32_t major;
152 uint32_t minor;
153} LTTNG_PACKED;
154
e80c3634 155struct lttng_kernel_syscall_mask {
46820c8b 156 uint32_t len; /* in bits */
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157 char mask[];
158} LTTNG_PACKED;
159
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160/*
161 * kernel channel
162 */
163#define LTTNG_KERNEL_CHANNEL_PADDING1 LTTNG_SYMBOL_NAME_LEN + 32
164struct lttng_kernel_channel {
165 uint64_t subbuf_size; /* bytes */
166 uint64_t num_subbuf; /* power of 2 */
167 unsigned int switch_timer_interval; /* usec */
168 unsigned int read_timer_interval; /* usec */
169 enum lttng_event_output output; /* splice, mmap */
170
171 int overwrite; /* 1: overwrite, 0: discard */
172 char padding[LTTNG_KERNEL_CHANNEL_PADDING1];
113373e4 173} LTTNG_PACKED;
d0254c7c 174
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175#define KERNEL_FILTER_BYTECODE_MAX_LEN 65536
176struct lttng_kernel_filter_bytecode {
177 uint32_t len;
178 uint32_t reloc_offset;
179 uint64_t seqnum;
180 char data[0];
181} LTTNG_PACKED;
182
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183/*
184 * kernel session name
185 */
186struct lttng_kernel_session_name {
187 char name[LTTNG_KERNEL_SESSION_NAME_LEN];
188} LTTNG_PACKED;
189
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190/*
191 * kernel session creation datetime
192 */
193struct lttng_kernel_session_creation_time {
194 char iso8601[LTTNG_KERNEL_SESSION_CREATION_TIME_ISO8601_LEN];
195} LTTNG_PACKED;
196
93128a92 197#endif /* _LTTNG_KERNEL_H */
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