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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> |
e848fc76 | 25 | |
dbbb3ec5 | 26 | #define LTTNG_KERNEL_SYM_NAME_LEN 256 |
9cb98350 | 27 | |
7d29a247 DG |
28 | /* |
29 | * LTTng DebugFS ABI structures. | |
30 | * | |
31 | * This is the kernel ABI copied from lttng-modules tree. | |
32 | */ | |
33 | ||
9cb98350 | 34 | enum lttng_kernel_instrumentation { |
5f822d0a | 35 | LTTNG_KERNEL_ALL = -1, /* Used within lttng-tools */ |
e6ddca71 DG |
36 | LTTNG_KERNEL_TRACEPOINT = 0, |
37 | LTTNG_KERNEL_KPROBE = 1, | |
38 | LTTNG_KERNEL_FUNCTION = 2, | |
8f0d098b | 39 | LTTNG_KERNEL_KRETPROBE = 3, |
0133c199 | 40 | LTTNG_KERNEL_NOOP = 4, /* not hooked */ |
a54bd42d | 41 | LTTNG_KERNEL_SYSCALL = 5, |
e6ddca71 DG |
42 | }; |
43 | ||
7d29a247 DG |
44 | enum lttng_kernel_context_type { |
45 | LTTNG_KERNEL_CONTEXT_PID = 0, | |
aa3514e9 | 46 | LTTNG_KERNEL_CONTEXT_PERF_CPU_COUNTER = 1, |
9197c5c4 | 47 | LTTNG_KERNEL_CONTEXT_PROCNAME = 2, |
7d29a247 DG |
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, | |
54773d68 | 55 | LTTNG_KERNEL_CONTEXT_HOSTNAME = 10, |
33e801a9 | 56 | LTTNG_KERNEL_CONTEXT_CPU_ID = 11, |
1ae5e83e JD |
57 | LTTNG_KERNEL_CONTEXT_INTERRUPTIBLE = 12, |
58 | LTTNG_KERNEL_CONTEXT_PREEMPTIBLE = 13, | |
59 | LTTNG_KERNEL_CONTEXT_NEED_RESCHEDULE = 14, | |
60 | LTTNG_KERNEL_CONTEXT_MIGRATABLE = 15, | |
7d29a247 DG |
61 | }; |
62 | ||
63 | /* Perf counter attributes */ | |
64 | struct lttng_kernel_perf_counter_ctx { | |
65 | uint32_t type; | |
66 | uint64_t config; | |
dbbb3ec5 | 67 | char name[LTTNG_KERNEL_SYM_NAME_LEN]; |
113373e4 | 68 | } LTTNG_PACKED; |
7d29a247 DG |
69 | |
70 | /* Event/Channel context */ | |
dbbb3ec5 DG |
71 | #define LTTNG_KERNEL_CONTEXT_PADDING1 16 |
72 | #define LTTNG_KERNEL_CONTEXT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32 | |
7d29a247 DG |
73 | struct lttng_kernel_context { |
74 | enum lttng_kernel_context_type ctx; | |
dbbb3ec5 DG |
75 | char padding[LTTNG_KERNEL_CONTEXT_PADDING1]; |
76 | ||
7d29a247 DG |
77 | union { |
78 | struct lttng_kernel_perf_counter_ctx perf_counter; | |
dbbb3ec5 | 79 | char padding[LTTNG_KERNEL_CONTEXT_PADDING2]; |
7d29a247 | 80 | } u; |
113373e4 | 81 | } LTTNG_PACKED; |
9cb98350 | 82 | |
8f0d098b MD |
83 | struct lttng_kernel_kretprobe { |
84 | uint64_t addr; | |
85 | ||
86 | uint64_t offset; | |
dbbb3ec5 | 87 | char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN]; |
113373e4 | 88 | } LTTNG_PACKED; |
8f0d098b | 89 | |
93128a92 | 90 | /* |
7d29a247 | 91 | * Either addr is used, or symbol_name and offset. |
93128a92 | 92 | */ |
7d29a247 DG |
93 | struct lttng_kernel_kprobe { |
94 | uint64_t addr; | |
95 | ||
96 | uint64_t offset; | |
dbbb3ec5 | 97 | char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN]; |
113373e4 | 98 | } LTTNG_PACKED; |
9cb98350 | 99 | |
f05b5f07 | 100 | /* Function tracer */ |
7d29a247 | 101 | struct lttng_kernel_function { |
dbbb3ec5 | 102 | char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN]; |
113373e4 | 103 | } LTTNG_PACKED; |
93128a92 | 104 | |
dbbb3ec5 DG |
105 | #define LTTNG_KERNEL_EVENT_PADDING1 16 |
106 | #define LTTNG_KERNEL_EVENT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32 | |
9cb98350 | 107 | struct lttng_kernel_event { |
dbbb3ec5 | 108 | char name[LTTNG_KERNEL_SYM_NAME_LEN]; |
9cb98350 | 109 | enum lttng_kernel_instrumentation instrumentation; |
dbbb3ec5 DG |
110 | char padding[LTTNG_KERNEL_EVENT_PADDING1]; |
111 | ||
9cb98350 JD |
112 | /* Per instrumentation type configuration */ |
113 | union { | |
8f0d098b | 114 | struct lttng_kernel_kretprobe kretprobe; |
7d29a247 DG |
115 | struct lttng_kernel_kprobe kprobe; |
116 | struct lttng_kernel_function ftrace; | |
dbbb3ec5 | 117 | char padding[LTTNG_KERNEL_EVENT_PADDING2]; |
9cb98350 | 118 | } u; |
113373e4 | 119 | } LTTNG_PACKED; |
93128a92 | 120 | |
9cb98350 | 121 | struct lttng_kernel_tracer_version { |
a62a6556 MD |
122 | uint32_t major; |
123 | uint32_t minor; | |
9cb98350 | 124 | uint32_t patchlevel; |
113373e4 | 125 | } LTTNG_PACKED; |
93128a92 | 126 | |
c052142c MD |
127 | struct lttng_kernel_tracer_abi_version { |
128 | uint32_t major; | |
129 | uint32_t minor; | |
130 | } LTTNG_PACKED; | |
131 | ||
e80c3634 | 132 | struct lttng_kernel_syscall_mask { |
46820c8b | 133 | uint32_t len; /* in bits */ |
e80c3634 MD |
134 | char mask[]; |
135 | } LTTNG_PACKED; | |
136 | ||
4dbc372b JD |
137 | /* |
138 | * kernel channel | |
139 | */ | |
140 | #define LTTNG_KERNEL_CHANNEL_PADDING1 LTTNG_SYMBOL_NAME_LEN + 32 | |
141 | struct lttng_kernel_channel { | |
142 | uint64_t subbuf_size; /* bytes */ | |
143 | uint64_t num_subbuf; /* power of 2 */ | |
144 | unsigned int switch_timer_interval; /* usec */ | |
145 | unsigned int read_timer_interval; /* usec */ | |
146 | enum lttng_event_output output; /* splice, mmap */ | |
147 | ||
148 | int overwrite; /* 1: overwrite, 0: discard */ | |
149 | char padding[LTTNG_KERNEL_CHANNEL_PADDING1]; | |
113373e4 | 150 | } LTTNG_PACKED; |
d0254c7c | 151 | |
00a62084 MD |
152 | #define KERNEL_FILTER_BYTECODE_MAX_LEN 65536 |
153 | struct lttng_kernel_filter_bytecode { | |
154 | uint32_t len; | |
155 | uint32_t reloc_offset; | |
156 | uint64_t seqnum; | |
157 | char data[0]; | |
158 | } LTTNG_PACKED; | |
159 | ||
93128a92 | 160 | #endif /* _LTTNG_KERNEL_H */ |