Commit | Line | Data |
---|---|---|
fda89c9b | 1 | /* |
ab5be9fa | 2 | * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca> |
fda89c9b | 3 | * |
ab5be9fa | 4 | * SPDX-License-Identifier: GPL-2.0-only |
fda89c9b | 5 | * |
fda89c9b DG |
6 | */ |
7 | ||
62499ad6 DG |
8 | #ifndef _LTT_TRACE_KERNEL_H |
9 | #define _LTT_TRACE_KERNEL_H | |
fda89c9b | 10 | |
9e78d6ae | 11 | #include <urcu/list.h> |
d4a2a84a | 12 | |
f3ed775e | 13 | #include <lttng/lttng.h> |
10a8a223 | 14 | #include <common/lttng-kernel.h> |
4dbc372b | 15 | #include <common/lttng-kernel-old.h> |
ce2a9e76 | 16 | #include <common/defaults.h> |
54012638 | 17 | |
00e2e675 | 18 | #include "consumer.h" |
55c9e7ca | 19 | #include "tracker.h" |
00e2e675 | 20 | |
20fe2104 DG |
21 | /* Kernel event list */ |
22 | struct ltt_kernel_event_list { | |
23 | struct cds_list_head head; | |
24 | }; | |
25 | ||
d3a684ee JR |
26 | /* Kernel event rule token list */ |
27 | struct ltt_kernel_token_event_rule_list { | |
28 | struct cds_list_head head; | |
29 | }; | |
30 | ||
8c0faa1d DG |
31 | /* Channel stream list */ |
32 | struct ltt_kernel_stream_list { | |
33 | struct cds_list_head head; | |
34 | }; | |
35 | ||
36 | /* Channel list */ | |
37 | struct ltt_kernel_channel_list { | |
38 | struct cds_list_head head; | |
39 | }; | |
40 | ||
645328ae DG |
41 | struct ltt_kernel_context { |
42 | struct lttng_kernel_context ctx; | |
43 | struct cds_list_head list; | |
ba985c3a JG |
44 | /* Indicates whether or not the context is in a list. */ |
45 | bool in_list; | |
645328ae DG |
46 | }; |
47 | ||
20fe2104 DG |
48 | /* Kernel event */ |
49 | struct ltt_kernel_event { | |
20fe2104 | 50 | int fd; |
e953ef25 | 51 | int enabled; |
d0ae4ea8 | 52 | enum lttng_event_type type; |
f34daff7 | 53 | struct lttng_kernel_event *event; |
20fe2104 | 54 | struct cds_list_head list; |
00a62084 MD |
55 | char *filter_expression; |
56 | struct lttng_filter_bytecode *filter; | |
3c02e545 | 57 | struct lttng_userspace_probe_location *userspace_probe_location; |
20fe2104 DG |
58 | }; |
59 | ||
d3a684ee JR |
60 | /* Kernel event */ |
61 | struct ltt_kernel_token_event_rule { | |
62 | int fd; | |
63 | int enabled; | |
64 | enum lttng_event_type type; | |
65 | struct lttng_event_rule *event_rule; | |
66 | struct cds_list_head list; | |
67 | uint64_t token; | |
68 | const struct lttng_filter_bytecode *filter; | |
69 | struct lttng_userspace_probe_location *userspace_probe_location; | |
70 | }; | |
71 | ||
20fe2104 DG |
72 | /* Kernel channel */ |
73 | struct ltt_kernel_channel { | |
74 | int fd; | |
e1f3997a | 75 | uint64_t key; /* Key to reference this channel with the consumer. */ |
d36b8583 | 76 | int enabled; |
8c0faa1d | 77 | unsigned int stream_count; |
cbbbb275 | 78 | unsigned int event_count; |
753873bf | 79 | bool published_to_notification_thread; |
645328ae | 80 | struct cds_list_head ctx_list; |
f3ed775e | 81 | struct lttng_channel *channel; |
20fe2104 | 82 | struct ltt_kernel_event_list events_list; |
8c0faa1d DG |
83 | struct ltt_kernel_stream_list stream_list; |
84 | struct cds_list_head list; | |
fb5f35b6 DG |
85 | /* Session pointer which has a reference to this object. */ |
86 | struct ltt_kernel_session *session; | |
e99f9447 | 87 | bool sent_to_consumer; |
20fe2104 DG |
88 | }; |
89 | ||
aaf26714 DG |
90 | /* Metadata */ |
91 | struct ltt_kernel_metadata { | |
92 | int fd; | |
d40f0359 | 93 | uint64_t key; /* Key to reference this channel with the consumer. */ |
f3ed775e | 94 | struct lttng_channel *conf; |
aaf26714 DG |
95 | }; |
96 | ||
8c0faa1d DG |
97 | /* Channel stream */ |
98 | struct ltt_kernel_stream { | |
99 | int fd; | |
8c0faa1d | 100 | int state; |
ffe60014 | 101 | int cpu; |
6986ab9b | 102 | bool sent_to_consumer; |
00e2e675 | 103 | /* Format is %s_%d respectively channel name and CPU number. */ |
ce2a9e76 | 104 | char name[DEFAULT_STREAM_NAME_LEN]; |
1624d5b7 JD |
105 | uint64_t tracefile_size; |
106 | uint64_t tracefile_count; | |
8c0faa1d DG |
107 | struct cds_list_head list; |
108 | }; | |
109 | ||
20fe2104 DG |
110 | /* Kernel session */ |
111 | struct ltt_kernel_session { | |
112 | int fd; | |
8c0faa1d | 113 | int metadata_stream_fd; |
3bd1e081 | 114 | int consumer_fds_sent; |
8c0faa1d DG |
115 | unsigned int channel_count; |
116 | unsigned int stream_count_global; | |
aaf26714 | 117 | struct ltt_kernel_metadata *metadata; |
8c0faa1d | 118 | struct ltt_kernel_channel_list channel_list; |
6df2e2c9 MD |
119 | /* UID/GID of the user owning the session */ |
120 | uid_t uid; | |
121 | gid_t gid; | |
00e2e675 | 122 | struct consumer_output *consumer; |
53632229 | 123 | /* Tracing session id */ |
d022620a | 124 | uint64_t id; |
14fb1ebe DG |
125 | /* Session is active or not meaning it has been started or stopped. */ |
126 | unsigned int active:1; | |
2bba9e53 DG |
127 | /* Tell or not if the session has to output the traces. */ |
128 | unsigned int output_traces; | |
27babd3a | 129 | unsigned int snapshot_mode; |
85076754 | 130 | unsigned int has_non_default_channel; |
82b69413 JG |
131 | /* Current trace chunk of the ltt_session. */ |
132 | struct lttng_trace_chunk *current_trace_chunk; | |
55c9e7ca JR |
133 | /* Tracker lists */ |
134 | struct lttng_tracker_list *tracker_list_pid; | |
135 | struct lttng_tracker_list *tracker_list_vpid; | |
136 | struct lttng_tracker_list *tracker_list_uid; | |
137 | struct lttng_tracker_list *tracker_list_vuid; | |
138 | struct lttng_tracker_list *tracker_list_gid; | |
139 | struct lttng_tracker_list *tracker_list_vgid; | |
fda89c9b DG |
140 | }; |
141 | ||
62499ad6 DG |
142 | /* |
143 | * Lookup functions. NULL is returned if not found. | |
144 | */ | |
145 | struct ltt_kernel_event *trace_kernel_get_event_by_name( | |
d0ae4ea8 MD |
146 | char *name, struct ltt_kernel_channel *channel, |
147 | enum lttng_event_type type); | |
00a62084 MD |
148 | struct ltt_kernel_event *trace_kernel_find_event( |
149 | char *name, struct ltt_kernel_channel *channel, | |
150 | enum lttng_event_type type, | |
151 | struct lttng_filter_bytecode *filter); | |
62499ad6 | 152 | struct ltt_kernel_channel *trace_kernel_get_channel_by_name( |
df4f5a87 | 153 | const char *name, struct ltt_kernel_session *session); |
19e70852 | 154 | |
d3a684ee JR |
155 | struct ltt_kernel_token_event_rule *trace_kernel_find_trigger_by_token( |
156 | struct ltt_kernel_token_event_rule_list *list, | |
157 | uint64_t token); | |
158 | ||
54012638 | 159 | /* |
c363b55d | 160 | * Create functions malloc() the data structure. |
54012638 | 161 | */ |
dec56f6c | 162 | struct ltt_kernel_session *trace_kernel_create_session(void); |
fdd9eb17 DG |
163 | struct ltt_kernel_channel *trace_kernel_create_channel( |
164 | struct lttng_channel *chan); | |
71a3bb01 FD |
165 | enum lttng_error_code trace_kernel_create_event(struct lttng_event *ev, |
166 | char *filter_expression, struct lttng_filter_bytecode *filter, | |
167 | struct ltt_kernel_event **kernel_event); | |
a4b92340 | 168 | struct ltt_kernel_metadata *trace_kernel_create_metadata(void); |
00e2e675 DG |
169 | struct ltt_kernel_stream *trace_kernel_create_stream(const char *name, |
170 | unsigned int count); | |
645328ae DG |
171 | struct ltt_kernel_context *trace_kernel_create_context( |
172 | struct lttng_kernel_context *ctx); | |
d3a684ee JR |
173 | enum lttng_error_code trace_kernel_create_token_event_rule( |
174 | struct lttng_event_rule *event_rule, | |
175 | uint64_t token, | |
176 | struct ltt_kernel_token_event_rule **kernel_token_event_rule); | |
df3c77c8 JG |
177 | struct ltt_kernel_context *trace_kernel_copy_context( |
178 | struct ltt_kernel_context *ctx); | |
d3a684ee JR |
179 | enum lttng_error_code trace_kernel_init_trigger_from_event_rule(const struct lttng_event_rule *rule, |
180 | struct lttng_kernel_trigger *kernel_trigger); | |
54012638 | 181 | |
c363b55d DG |
182 | /* |
183 | * Destroy functions free() the data structure and remove from linked list if | |
184 | * it's applies. | |
185 | */ | |
62499ad6 DG |
186 | void trace_kernel_destroy_session(struct ltt_kernel_session *session); |
187 | void trace_kernel_destroy_metadata(struct ltt_kernel_metadata *metadata); | |
188 | void trace_kernel_destroy_channel(struct ltt_kernel_channel *channel); | |
189 | void trace_kernel_destroy_event(struct ltt_kernel_event *event); | |
190 | void trace_kernel_destroy_stream(struct ltt_kernel_stream *stream); | |
645328ae | 191 | void trace_kernel_destroy_context(struct ltt_kernel_context *ctx); |
d3a684ee | 192 | void trace_kernel_destroy_token_event_rule(struct ltt_kernel_token_event_rule *rule); |
d070c424 | 193 | void trace_kernel_free_session(struct ltt_kernel_session *session); |
c363b55d | 194 | |
62499ad6 | 195 | #endif /* _LTT_TRACE_KERNEL_H */ |