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