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 | ||
8c0faa1d DG |
26 | /* Channel stream list */ |
27 | struct ltt_kernel_stream_list { | |
28 | struct cds_list_head head; | |
29 | }; | |
30 | ||
31 | /* Channel list */ | |
32 | struct ltt_kernel_channel_list { | |
33 | struct cds_list_head head; | |
34 | }; | |
35 | ||
645328ae DG |
36 | struct ltt_kernel_context { |
37 | struct lttng_kernel_context ctx; | |
38 | struct cds_list_head list; | |
ba985c3a JG |
39 | /* Indicates whether or not the context is in a list. */ |
40 | bool in_list; | |
645328ae DG |
41 | }; |
42 | ||
20fe2104 DG |
43 | /* Kernel event */ |
44 | struct ltt_kernel_event { | |
20fe2104 | 45 | int fd; |
e953ef25 | 46 | int enabled; |
d0ae4ea8 | 47 | enum lttng_event_type type; |
f34daff7 | 48 | struct lttng_kernel_event *event; |
20fe2104 | 49 | struct cds_list_head list; |
00a62084 | 50 | char *filter_expression; |
2b00d462 | 51 | struct lttng_bytecode *filter; |
3c02e545 | 52 | struct lttng_userspace_probe_location *userspace_probe_location; |
20fe2104 DG |
53 | }; |
54 | ||
352b58f5 JR |
55 | /* Kernel event */ |
56 | struct ltt_kernel_event_notifier_rule { | |
57 | int fd; | |
58 | int enabled; | |
59 | enum lttng_event_type type; | |
60 | struct lttng_trigger *trigger; | |
61 | uint64_t token; | |
2b00d462 | 62 | const struct lttng_bytecode *filter; |
352b58f5 JR |
63 | struct lttng_userspace_probe_location *userspace_probe_location; |
64 | struct cds_lfht_node ht_node; | |
65 | /* call_rcu delayed reclaim. */ | |
66 | struct rcu_head rcu_node; | |
67 | }; | |
68 | ||
20fe2104 DG |
69 | /* Kernel channel */ |
70 | struct ltt_kernel_channel { | |
71 | int fd; | |
e1f3997a | 72 | uint64_t key; /* Key to reference this channel with the consumer. */ |
d36b8583 | 73 | int enabled; |
8c0faa1d | 74 | unsigned int stream_count; |
cbbbb275 | 75 | unsigned int event_count; |
753873bf | 76 | bool published_to_notification_thread; |
645328ae | 77 | struct cds_list_head ctx_list; |
f3ed775e | 78 | struct lttng_channel *channel; |
20fe2104 | 79 | struct ltt_kernel_event_list events_list; |
8c0faa1d DG |
80 | struct ltt_kernel_stream_list stream_list; |
81 | struct cds_list_head list; | |
fb5f35b6 DG |
82 | /* Session pointer which has a reference to this object. */ |
83 | struct ltt_kernel_session *session; | |
e99f9447 | 84 | bool sent_to_consumer; |
20fe2104 DG |
85 | }; |
86 | ||
aaf26714 DG |
87 | /* Metadata */ |
88 | struct ltt_kernel_metadata { | |
89 | int fd; | |
d40f0359 | 90 | uint64_t key; /* Key to reference this channel with the consumer. */ |
f3ed775e | 91 | struct lttng_channel *conf; |
aaf26714 DG |
92 | }; |
93 | ||
8c0faa1d DG |
94 | /* Channel stream */ |
95 | struct ltt_kernel_stream { | |
96 | int fd; | |
8c0faa1d | 97 | int state; |
ffe60014 | 98 | int cpu; |
6986ab9b | 99 | bool sent_to_consumer; |
00e2e675 | 100 | /* Format is %s_%d respectively channel name and CPU number. */ |
ce2a9e76 | 101 | char name[DEFAULT_STREAM_NAME_LEN]; |
1624d5b7 JD |
102 | uint64_t tracefile_size; |
103 | uint64_t tracefile_count; | |
8c0faa1d DG |
104 | struct cds_list_head list; |
105 | }; | |
106 | ||
20fe2104 DG |
107 | /* Kernel session */ |
108 | struct ltt_kernel_session { | |
109 | int fd; | |
8c0faa1d | 110 | int metadata_stream_fd; |
3bd1e081 | 111 | int consumer_fds_sent; |
8c0faa1d DG |
112 | unsigned int channel_count; |
113 | unsigned int stream_count_global; | |
aaf26714 | 114 | struct ltt_kernel_metadata *metadata; |
8c0faa1d | 115 | struct ltt_kernel_channel_list channel_list; |
6df2e2c9 MD |
116 | /* UID/GID of the user owning the session */ |
117 | uid_t uid; | |
118 | gid_t gid; | |
00e2e675 | 119 | struct consumer_output *consumer; |
53632229 | 120 | /* Tracing session id */ |
d022620a | 121 | uint64_t id; |
14fb1ebe DG |
122 | /* Session is active or not meaning it has been started or stopped. */ |
123 | unsigned int active:1; | |
2bba9e53 DG |
124 | /* Tell or not if the session has to output the traces. */ |
125 | unsigned int output_traces; | |
27babd3a | 126 | unsigned int snapshot_mode; |
85076754 | 127 | unsigned int has_non_default_channel; |
a2814ea7 | 128 | bool is_live_session; |
82b69413 JG |
129 | /* Current trace chunk of the ltt_session. */ |
130 | struct lttng_trace_chunk *current_trace_chunk; | |
55c9e7ca | 131 | /* Tracker lists */ |
159b042f JG |
132 | struct process_attr_tracker *tracker_pid; |
133 | struct process_attr_tracker *tracker_vpid; | |
134 | struct process_attr_tracker *tracker_uid; | |
135 | struct process_attr_tracker *tracker_vuid; | |
136 | struct process_attr_tracker *tracker_gid; | |
137 | struct process_attr_tracker *tracker_vgid; | |
fda89c9b DG |
138 | }; |
139 | ||
62499ad6 DG |
140 | /* |
141 | * Lookup functions. NULL is returned if not found. | |
142 | */ | |
143 | struct ltt_kernel_event *trace_kernel_get_event_by_name( | |
d0ae4ea8 MD |
144 | char *name, struct ltt_kernel_channel *channel, |
145 | enum lttng_event_type type); | |
00a62084 MD |
146 | struct ltt_kernel_event *trace_kernel_find_event( |
147 | char *name, struct ltt_kernel_channel *channel, | |
148 | enum lttng_event_type type, | |
2b00d462 | 149 | struct lttng_bytecode *filter); |
62499ad6 | 150 | struct ltt_kernel_channel *trace_kernel_get_channel_by_name( |
df4f5a87 | 151 | const char *name, struct ltt_kernel_session *session); |
19e70852 | 152 | |
54012638 | 153 | /* |
c363b55d | 154 | * Create functions malloc() the data structure. |
54012638 | 155 | */ |
dec56f6c | 156 | struct ltt_kernel_session *trace_kernel_create_session(void); |
fdd9eb17 DG |
157 | struct ltt_kernel_channel *trace_kernel_create_channel( |
158 | struct lttng_channel *chan); | |
71a3bb01 | 159 | enum lttng_error_code trace_kernel_create_event(struct lttng_event *ev, |
2b00d462 | 160 | char *filter_expression, struct lttng_bytecode *filter, |
71a3bb01 | 161 | struct ltt_kernel_event **kernel_event); |
a4b92340 | 162 | struct ltt_kernel_metadata *trace_kernel_create_metadata(void); |
00e2e675 DG |
163 | struct ltt_kernel_stream *trace_kernel_create_stream(const char *name, |
164 | unsigned int count); | |
645328ae DG |
165 | struct ltt_kernel_context *trace_kernel_create_context( |
166 | struct lttng_kernel_context *ctx); | |
352b58f5 JR |
167 | enum lttng_error_code trace_kernel_create_event_notifier_rule( |
168 | struct lttng_trigger *trigger, | |
169 | uint64_t token, | |
170 | struct ltt_kernel_event_notifier_rule **event_notifier_rule); | |
df3c77c8 JG |
171 | struct ltt_kernel_context *trace_kernel_copy_context( |
172 | struct ltt_kernel_context *ctx); | |
352b58f5 JR |
173 | enum lttng_error_code trace_kernel_init_event_notifier_from_event_rule( |
174 | const struct lttng_event_rule *rule, | |
175 | struct lttng_kernel_event_notifier *kernel_event_notifier); | |
54012638 | 176 | |
c363b55d DG |
177 | /* |
178 | * Destroy functions free() the data structure and remove from linked list if | |
179 | * it's applies. | |
180 | */ | |
62499ad6 DG |
181 | void trace_kernel_destroy_session(struct ltt_kernel_session *session); |
182 | void trace_kernel_destroy_metadata(struct ltt_kernel_metadata *metadata); | |
183 | void trace_kernel_destroy_channel(struct ltt_kernel_channel *channel); | |
184 | void trace_kernel_destroy_event(struct ltt_kernel_event *event); | |
185 | void trace_kernel_destroy_stream(struct ltt_kernel_stream *stream); | |
645328ae | 186 | void trace_kernel_destroy_context(struct ltt_kernel_context *ctx); |
352b58f5 | 187 | void trace_kernel_destroy_event_notifier_rule(struct ltt_kernel_event_notifier_rule *rule); |
d070c424 | 188 | void trace_kernel_free_session(struct ltt_kernel_session *session); |
c363b55d | 189 | |
62499ad6 | 190 | #endif /* _LTT_TRACE_KERNEL_H */ |