CLI: show event exclusion names
[lttng-tools.git] / src / common / lttng-kernel.h
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 modify
7 * it under the terms of the GNU General Public License, version 2 only,
8 * as published by the Free Software Foundation.
9 *
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.
14 *
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.
18 */
19
20 #ifndef _LTTNG_KERNEL_H
21 #define _LTTNG_KERNEL_H
22
23 #include <stdint.h>
24 #include <common/macros.h>
25
26 #define LTTNG_KERNEL_SYM_NAME_LEN 256
27
28 /*
29 * LTTng DebugFS ABI structures.
30 *
31 * This is the kernel ABI copied from lttng-modules tree.
32 */
33
34 enum lttng_kernel_instrumentation {
35 LTTNG_KERNEL_ALL = -1, /* Used within lttng-tools */
36 LTTNG_KERNEL_TRACEPOINT = 0,
37 LTTNG_KERNEL_KPROBE = 1,
38 LTTNG_KERNEL_FUNCTION = 2,
39 LTTNG_KERNEL_KRETPROBE = 3,
40 LTTNG_KERNEL_NOOP = 4, /* not hooked */
41 LTTNG_KERNEL_SYSCALL = 5,
42 };
43
44 enum lttng_kernel_context_type {
45 LTTNG_KERNEL_CONTEXT_PID = 0,
46 LTTNG_KERNEL_CONTEXT_PERF_CPU_COUNTER = 1,
47 LTTNG_KERNEL_CONTEXT_PROCNAME = 2,
48 LTTNG_KERNEL_CONTEXT_PRIO = 3,
49 LTTNG_KERNEL_CONTEXT_NICE = 4,
50 LTTNG_KERNEL_CONTEXT_VPID = 5,
51 LTTNG_KERNEL_CONTEXT_TID = 6,
52 LTTNG_KERNEL_CONTEXT_VTID = 7,
53 LTTNG_KERNEL_CONTEXT_PPID = 8,
54 LTTNG_KERNEL_CONTEXT_VPPID = 9,
55 LTTNG_KERNEL_CONTEXT_HOSTNAME = 10,
56 LTTNG_KERNEL_CONTEXT_CPU_ID = 11,
57 };
58
59 /* Perf counter attributes */
60 struct lttng_kernel_perf_counter_ctx {
61 uint32_t type;
62 uint64_t config;
63 char name[LTTNG_KERNEL_SYM_NAME_LEN];
64 } LTTNG_PACKED;
65
66 /* Event/Channel context */
67 #define LTTNG_KERNEL_CONTEXT_PADDING1 16
68 #define LTTNG_KERNEL_CONTEXT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
69 struct lttng_kernel_context {
70 enum lttng_kernel_context_type ctx;
71 char padding[LTTNG_KERNEL_CONTEXT_PADDING1];
72
73 union {
74 struct lttng_kernel_perf_counter_ctx perf_counter;
75 char padding[LTTNG_KERNEL_CONTEXT_PADDING2];
76 } u;
77 } LTTNG_PACKED;
78
79 struct lttng_kernel_kretprobe {
80 uint64_t addr;
81
82 uint64_t offset;
83 char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
84 } LTTNG_PACKED;
85
86 /*
87 * Either addr is used, or symbol_name and offset.
88 */
89 struct lttng_kernel_kprobe {
90 uint64_t addr;
91
92 uint64_t offset;
93 char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
94 } LTTNG_PACKED;
95
96 /* Function tracer */
97 struct lttng_kernel_function {
98 char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
99 } LTTNG_PACKED;
100
101 #define LTTNG_KERNEL_EVENT_PADDING1 16
102 #define LTTNG_KERNEL_EVENT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
103 struct lttng_kernel_event {
104 char name[LTTNG_KERNEL_SYM_NAME_LEN];
105 enum lttng_kernel_instrumentation instrumentation;
106 char padding[LTTNG_KERNEL_EVENT_PADDING1];
107
108 /* Per instrumentation type configuration */
109 union {
110 struct lttng_kernel_kretprobe kretprobe;
111 struct lttng_kernel_kprobe kprobe;
112 struct lttng_kernel_function ftrace;
113 char padding[LTTNG_KERNEL_EVENT_PADDING2];
114 } u;
115 } LTTNG_PACKED;
116
117 struct lttng_kernel_tracer_version {
118 uint32_t major;
119 uint32_t minor;
120 uint32_t patchlevel;
121 } LTTNG_PACKED;
122
123 struct lttng_kernel_tracer_abi_version {
124 uint32_t major;
125 uint32_t minor;
126 } LTTNG_PACKED;
127
128 enum lttng_kernel_calibrate_type {
129 LTTNG_KERNEL_CALIBRATE_KRETPROBE,
130 };
131
132 struct lttng_kernel_calibrate {
133 enum lttng_kernel_calibrate_type type; /* type (input) */
134 } LTTNG_PACKED;
135
136 struct lttng_kernel_syscall_mask {
137 uint32_t len; /* in bits */
138 char mask[];
139 } LTTNG_PACKED;
140
141 /*
142 * kernel channel
143 */
144 #define LTTNG_KERNEL_CHANNEL_PADDING1 LTTNG_SYMBOL_NAME_LEN + 32
145 struct lttng_kernel_channel {
146 uint64_t subbuf_size; /* bytes */
147 uint64_t num_subbuf; /* power of 2 */
148 unsigned int switch_timer_interval; /* usec */
149 unsigned int read_timer_interval; /* usec */
150 enum lttng_event_output output; /* splice, mmap */
151
152 int overwrite; /* 1: overwrite, 0: discard */
153 char padding[LTTNG_KERNEL_CHANNEL_PADDING1];
154 } LTTNG_PACKED;
155
156 #define KERNEL_FILTER_BYTECODE_MAX_LEN 65536
157 struct lttng_kernel_filter_bytecode {
158 uint32_t len;
159 uint32_t reloc_offset;
160 uint64_t seqnum;
161 char data[0];
162 } LTTNG_PACKED;
163
164 #endif /* _LTTNG_KERNEL_H */
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