Commit | Line | Data |
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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> |
ebdb334b | 14 | #include <lttng/map/map.h> |
10a8a223 | 15 | #include <common/lttng-kernel.h> |
4dbc372b | 16 | #include <common/lttng-kernel-old.h> |
ce2a9e76 | 17 | #include <common/defaults.h> |
54012638 | 18 | |
00e2e675 | 19 | #include "consumer.h" |
55c9e7ca | 20 | #include "tracker.h" |
00e2e675 | 21 | |
20fe2104 DG |
22 | /* Kernel event list */ |
23 | struct ltt_kernel_event_list { | |
24 | struct cds_list_head head; | |
25 | }; | |
26 | ||
8c0faa1d DG |
27 | /* Channel stream list */ |
28 | struct ltt_kernel_stream_list { | |
29 | struct cds_list_head head; | |
30 | }; | |
31 | ||
32 | /* Channel list */ | |
33 | struct ltt_kernel_channel_list { | |
34 | struct cds_list_head head; | |
35 | }; | |
36 | ||
ebdb334b JR |
37 | /* map list */ |
38 | struct ltt_kernel_map_list { | |
39 | struct cds_list_head head; | |
40 | }; | |
41 | ||
645328ae DG |
42 | struct ltt_kernel_context { |
43 | struct lttng_kernel_context ctx; | |
44 | struct cds_list_head list; | |
ba985c3a JG |
45 | /* Indicates whether or not the context is in a list. */ |
46 | bool in_list; | |
645328ae DG |
47 | }; |
48 | ||
20fe2104 DG |
49 | /* Kernel event */ |
50 | struct ltt_kernel_event { | |
20fe2104 | 51 | int fd; |
e953ef25 | 52 | int enabled; |
d0ae4ea8 | 53 | enum lttng_event_type type; |
f34daff7 | 54 | struct lttng_kernel_event *event; |
20fe2104 | 55 | struct cds_list_head list; |
00a62084 | 56 | char *filter_expression; |
2b00d462 | 57 | struct lttng_bytecode *filter; |
3c02e545 | 58 | struct lttng_userspace_probe_location *userspace_probe_location; |
20fe2104 DG |
59 | }; |
60 | ||
ebdb334b | 61 | /* Kernel event notifier */ |
352b58f5 JR |
62 | struct ltt_kernel_event_notifier_rule { |
63 | int fd; | |
ebdb334b | 64 | uint64_t error_counter_index; |
352b58f5 JR |
65 | int enabled; |
66 | enum lttng_event_type type; | |
67 | struct lttng_trigger *trigger; | |
68 | uint64_t token; | |
2b00d462 | 69 | const struct lttng_bytecode *filter; |
352b58f5 JR |
70 | struct lttng_userspace_probe_location *userspace_probe_location; |
71 | struct cds_lfht_node ht_node; | |
72 | /* call_rcu delayed reclaim. */ | |
73 | struct rcu_head rcu_node; | |
74 | }; | |
75 | ||
ebdb334b JR |
76 | /* Kernel event counter */ |
77 | struct ltt_kernel_event_counter { | |
78 | int fd; | |
79 | int enabled; | |
80 | uint64_t action_tracer_token; | |
81 | struct lttng_kernel_event *event; | |
82 | struct lttng_event_rule *event_rule; | |
83 | const struct lttng_bytecode *filter; | |
84 | struct lttng_userspace_probe_location *userspace_probe_location; | |
85 | struct cds_list_head list; | |
86 | struct lttng_ht_node_u64 ht_node; | |
87 | ||
88 | /* refcounted */ | |
89 | struct lttng_map_key *key; | |
90 | /* call_rcu delayed reclaim. */ | |
91 | struct rcu_head rcu_node; | |
92 | }; | |
93 | ||
20fe2104 DG |
94 | /* Kernel channel */ |
95 | struct ltt_kernel_channel { | |
96 | int fd; | |
e1f3997a | 97 | uint64_t key; /* Key to reference this channel with the consumer. */ |
d36b8583 | 98 | int enabled; |
8c0faa1d | 99 | unsigned int stream_count; |
cbbbb275 | 100 | unsigned int event_count; |
753873bf | 101 | bool published_to_notification_thread; |
645328ae | 102 | struct cds_list_head ctx_list; |
f3ed775e | 103 | struct lttng_channel *channel; |
20fe2104 | 104 | struct ltt_kernel_event_list events_list; |
8c0faa1d DG |
105 | struct ltt_kernel_stream_list stream_list; |
106 | struct cds_list_head list; | |
fb5f35b6 DG |
107 | /* Session pointer which has a reference to this object. */ |
108 | struct ltt_kernel_session *session; | |
e99f9447 | 109 | bool sent_to_consumer; |
20fe2104 DG |
110 | }; |
111 | ||
ebdb334b JR |
112 | /* Kernel map */ |
113 | struct ltt_kernel_map { | |
114 | int fd; | |
115 | uint64_t key; /* Key to reference this map with the notification thread. */ | |
116 | int enabled; | |
117 | unsigned int event_count; | |
118 | struct lttng_map *map; | |
119 | struct lttng_kernel_counter_conf counter_conf; | |
120 | struct lttng_ht *event_counters_ht; | |
121 | struct cds_list_head list; | |
122 | /* Session pointer which has a reference to this object. */ | |
123 | struct ltt_kernel_session *session; | |
124 | }; | |
125 | ||
aaf26714 DG |
126 | /* Metadata */ |
127 | struct ltt_kernel_metadata { | |
128 | int fd; | |
d40f0359 | 129 | uint64_t key; /* Key to reference this channel with the consumer. */ |
f3ed775e | 130 | struct lttng_channel *conf; |
aaf26714 DG |
131 | }; |
132 | ||
8c0faa1d DG |
133 | /* Channel stream */ |
134 | struct ltt_kernel_stream { | |
135 | int fd; | |
8c0faa1d | 136 | int state; |
ffe60014 | 137 | int cpu; |
6986ab9b | 138 | bool sent_to_consumer; |
00e2e675 | 139 | /* Format is %s_%d respectively channel name and CPU number. */ |
ce2a9e76 | 140 | char name[DEFAULT_STREAM_NAME_LEN]; |
1624d5b7 JD |
141 | uint64_t tracefile_size; |
142 | uint64_t tracefile_count; | |
8c0faa1d DG |
143 | struct cds_list_head list; |
144 | }; | |
145 | ||
20fe2104 DG |
146 | /* Kernel session */ |
147 | struct ltt_kernel_session { | |
148 | int fd; | |
8c0faa1d | 149 | int metadata_stream_fd; |
3bd1e081 | 150 | int consumer_fds_sent; |
8c0faa1d | 151 | unsigned int channel_count; |
ebdb334b | 152 | unsigned int map_count; |
8c0faa1d | 153 | unsigned int stream_count_global; |
aaf26714 | 154 | struct ltt_kernel_metadata *metadata; |
8c0faa1d | 155 | struct ltt_kernel_channel_list channel_list; |
ebdb334b | 156 | struct ltt_kernel_map_list map_list; |
6df2e2c9 MD |
157 | /* UID/GID of the user owning the session */ |
158 | uid_t uid; | |
159 | gid_t gid; | |
00e2e675 | 160 | struct consumer_output *consumer; |
53632229 | 161 | /* Tracing session id */ |
d022620a | 162 | uint64_t id; |
14fb1ebe DG |
163 | /* Session is active or not meaning it has been started or stopped. */ |
164 | unsigned int active:1; | |
2bba9e53 DG |
165 | /* Tell or not if the session has to output the traces. */ |
166 | unsigned int output_traces; | |
27babd3a | 167 | unsigned int snapshot_mode; |
85076754 | 168 | unsigned int has_non_default_channel; |
a2814ea7 | 169 | bool is_live_session; |
82b69413 JG |
170 | /* Current trace chunk of the ltt_session. */ |
171 | struct lttng_trace_chunk *current_trace_chunk; | |
55c9e7ca | 172 | /* Tracker lists */ |
159b042f JG |
173 | struct process_attr_tracker *tracker_pid; |
174 | struct process_attr_tracker *tracker_vpid; | |
175 | struct process_attr_tracker *tracker_uid; | |
176 | struct process_attr_tracker *tracker_vuid; | |
177 | struct process_attr_tracker *tracker_gid; | |
178 | struct process_attr_tracker *tracker_vgid; | |
fda89c9b DG |
179 | }; |
180 | ||
62499ad6 DG |
181 | /* |
182 | * Lookup functions. NULL is returned if not found. | |
183 | */ | |
184 | struct ltt_kernel_event *trace_kernel_get_event_by_name( | |
d0ae4ea8 MD |
185 | char *name, struct ltt_kernel_channel *channel, |
186 | enum lttng_event_type type); | |
00a62084 | 187 | struct ltt_kernel_event *trace_kernel_find_event( |
ebdb334b JR |
188 | struct ltt_kernel_event_list *events_list, |
189 | uint64_t tracer_token, char *name, | |
00a62084 | 190 | enum lttng_event_type type, |
2b00d462 | 191 | struct lttng_bytecode *filter); |
62499ad6 | 192 | struct ltt_kernel_channel *trace_kernel_get_channel_by_name( |
df4f5a87 | 193 | const char *name, struct ltt_kernel_session *session); |
19e70852 | 194 | |
ebdb334b JR |
195 | struct ltt_kernel_map *trace_kernel_get_map_by_name( |
196 | const char *name, struct ltt_kernel_session *session); | |
197 | ||
54012638 | 198 | /* |
c363b55d | 199 | * Create functions malloc() the data structure. |
54012638 | 200 | */ |
dec56f6c | 201 | struct ltt_kernel_session *trace_kernel_create_session(void); |
fdd9eb17 DG |
202 | struct ltt_kernel_channel *trace_kernel_create_channel( |
203 | struct lttng_channel *chan); | |
ebdb334b | 204 | struct ltt_kernel_map *trace_kernel_create_map(const struct lttng_map *map); |
71a3bb01 | 205 | enum lttng_error_code trace_kernel_create_event(struct lttng_event *ev, |
2b00d462 | 206 | char *filter_expression, struct lttng_bytecode *filter, |
71a3bb01 | 207 | struct ltt_kernel_event **kernel_event); |
a4b92340 | 208 | struct ltt_kernel_metadata *trace_kernel_create_metadata(void); |
00e2e675 DG |
209 | struct ltt_kernel_stream *trace_kernel_create_stream(const char *name, |
210 | unsigned int count); | |
645328ae DG |
211 | struct ltt_kernel_context *trace_kernel_create_context( |
212 | struct lttng_kernel_context *ctx); | |
352b58f5 JR |
213 | enum lttng_error_code trace_kernel_create_event_notifier_rule( |
214 | struct lttng_trigger *trigger, | |
215 | uint64_t token, | |
ebdb334b | 216 | uint64_t error_counter_index, |
352b58f5 | 217 | struct ltt_kernel_event_notifier_rule **event_notifier_rule); |
df3c77c8 JG |
218 | struct ltt_kernel_context *trace_kernel_copy_context( |
219 | struct ltt_kernel_context *ctx); | |
352b58f5 JR |
220 | enum lttng_error_code trace_kernel_init_event_notifier_from_event_rule( |
221 | const struct lttng_event_rule *rule, | |
222 | struct lttng_kernel_event_notifier *kernel_event_notifier); | |
ebdb334b JR |
223 | enum lttng_error_code trace_kernel_init_event_counter_from_event_rule( |
224 | const struct lttng_event_rule *rule, | |
225 | struct lttng_kernel_counter_event *kernel_counter_event); | |
54012638 | 226 | |
c363b55d DG |
227 | /* |
228 | * Destroy functions free() the data structure and remove from linked list if | |
229 | * it's applies. | |
230 | */ | |
62499ad6 DG |
231 | void trace_kernel_destroy_session(struct ltt_kernel_session *session); |
232 | void trace_kernel_destroy_metadata(struct ltt_kernel_metadata *metadata); | |
233 | void trace_kernel_destroy_channel(struct ltt_kernel_channel *channel); | |
ebdb334b | 234 | void trace_kernel_destroy_map(struct ltt_kernel_map *map); |
62499ad6 DG |
235 | void trace_kernel_destroy_event(struct ltt_kernel_event *event); |
236 | void trace_kernel_destroy_stream(struct ltt_kernel_stream *stream); | |
645328ae | 237 | void trace_kernel_destroy_context(struct ltt_kernel_context *ctx); |
352b58f5 | 238 | void trace_kernel_destroy_event_notifier_rule(struct ltt_kernel_event_notifier_rule *rule); |
ebdb334b JR |
239 | void trace_kernel_destroy_event_counter( |
240 | struct ltt_kernel_event_counter *event_counter); | |
d070c424 | 241 | void trace_kernel_free_session(struct ltt_kernel_session *session); |
c363b55d | 242 | |
62499ad6 | 243 | #endif /* _LTT_TRACE_KERNEL_H */ |