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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, | |
46 | LTTNG_KERNEL_CONTEXT_PERF_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, |
7d29a247 DG |
56 | }; |
57 | ||
58 | /* Perf counter attributes */ | |
59 | struct lttng_kernel_perf_counter_ctx { | |
60 | uint32_t type; | |
61 | uint64_t config; | |
dbbb3ec5 | 62 | char name[LTTNG_KERNEL_SYM_NAME_LEN]; |
113373e4 | 63 | } LTTNG_PACKED; |
7d29a247 DG |
64 | |
65 | /* Event/Channel context */ | |
dbbb3ec5 DG |
66 | #define LTTNG_KERNEL_CONTEXT_PADDING1 16 |
67 | #define LTTNG_KERNEL_CONTEXT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32 | |
7d29a247 DG |
68 | struct lttng_kernel_context { |
69 | enum lttng_kernel_context_type ctx; | |
dbbb3ec5 DG |
70 | char padding[LTTNG_KERNEL_CONTEXT_PADDING1]; |
71 | ||
7d29a247 DG |
72 | union { |
73 | struct lttng_kernel_perf_counter_ctx perf_counter; | |
dbbb3ec5 | 74 | char padding[LTTNG_KERNEL_CONTEXT_PADDING2]; |
7d29a247 | 75 | } u; |
113373e4 | 76 | } LTTNG_PACKED; |
9cb98350 | 77 | |
8f0d098b MD |
78 | struct lttng_kernel_kretprobe { |
79 | uint64_t addr; | |
80 | ||
81 | uint64_t offset; | |
dbbb3ec5 | 82 | char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN]; |
113373e4 | 83 | } LTTNG_PACKED; |
8f0d098b | 84 | |
93128a92 | 85 | /* |
7d29a247 | 86 | * Either addr is used, or symbol_name and offset. |
93128a92 | 87 | */ |
7d29a247 DG |
88 | struct lttng_kernel_kprobe { |
89 | uint64_t addr; | |
90 | ||
91 | uint64_t offset; | |
dbbb3ec5 | 92 | char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN]; |
113373e4 | 93 | } LTTNG_PACKED; |
9cb98350 | 94 | |
f05b5f07 | 95 | /* Function tracer */ |
7d29a247 | 96 | struct lttng_kernel_function { |
dbbb3ec5 | 97 | char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN]; |
113373e4 | 98 | } LTTNG_PACKED; |
93128a92 | 99 | |
dbbb3ec5 DG |
100 | #define LTTNG_KERNEL_EVENT_PADDING1 16 |
101 | #define LTTNG_KERNEL_EVENT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32 | |
9cb98350 | 102 | struct lttng_kernel_event { |
dbbb3ec5 | 103 | char name[LTTNG_KERNEL_SYM_NAME_LEN]; |
9cb98350 | 104 | enum lttng_kernel_instrumentation instrumentation; |
dbbb3ec5 DG |
105 | char padding[LTTNG_KERNEL_EVENT_PADDING1]; |
106 | ||
9cb98350 JD |
107 | /* Per instrumentation type configuration */ |
108 | union { | |
8f0d098b | 109 | struct lttng_kernel_kretprobe kretprobe; |
7d29a247 DG |
110 | struct lttng_kernel_kprobe kprobe; |
111 | struct lttng_kernel_function ftrace; | |
dbbb3ec5 | 112 | char padding[LTTNG_KERNEL_EVENT_PADDING2]; |
9cb98350 | 113 | } u; |
113373e4 | 114 | } LTTNG_PACKED; |
93128a92 | 115 | |
9cb98350 | 116 | struct lttng_kernel_tracer_version { |
a62a6556 MD |
117 | uint32_t major; |
118 | uint32_t minor; | |
9cb98350 | 119 | uint32_t patchlevel; |
113373e4 | 120 | } LTTNG_PACKED; |
93128a92 | 121 | |
d0254c7c MD |
122 | enum lttng_kernel_calibrate_type { |
123 | LTTNG_KERNEL_CALIBRATE_KRETPROBE, | |
124 | }; | |
125 | ||
126 | struct lttng_kernel_calibrate { | |
127 | enum lttng_kernel_calibrate_type type; /* type (input) */ | |
113373e4 | 128 | } LTTNG_PACKED; |
4dbc372b JD |
129 | |
130 | /* | |
131 | * kernel channel | |
132 | */ | |
133 | #define LTTNG_KERNEL_CHANNEL_PADDING1 LTTNG_SYMBOL_NAME_LEN + 32 | |
134 | struct lttng_kernel_channel { | |
135 | uint64_t subbuf_size; /* bytes */ | |
136 | uint64_t num_subbuf; /* power of 2 */ | |
137 | unsigned int switch_timer_interval; /* usec */ | |
138 | unsigned int read_timer_interval; /* usec */ | |
139 | enum lttng_event_output output; /* splice, mmap */ | |
140 | ||
141 | int overwrite; /* 1: overwrite, 0: discard */ | |
142 | char padding[LTTNG_KERNEL_CHANNEL_PADDING1]; | |
113373e4 | 143 | } LTTNG_PACKED; |
d0254c7c | 144 | |
93128a92 | 145 | #endif /* _LTTNG_KERNEL_H */ |