Commit | Line | Data |
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fda89c9b | 1 | /* |
21cf9b6b | 2 | * Copyright (C) 2011 EfficiOS Inc. |
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> |
c9e313bc SM |
14 | #include <common/lttng-kernel.hpp> |
15 | #include <common/lttng-kernel-old.hpp> | |
16 | #include <common/defaults.hpp> | |
54012638 | 17 | |
c9e313bc SM |
18 | #include "consumer.hpp" |
19 | #include "tracker.hpp" | |
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 | 36 | struct ltt_kernel_context { |
b8e2fb80 | 37 | struct lttng_kernel_abi_context ctx; |
645328ae | 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; |
b8e2fb80 | 48 | struct lttng_kernel_abi_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; | |
90aa04a1 | 58 | uint64_t error_counter_index; |
352b58f5 JR |
59 | int enabled; |
60 | enum lttng_event_type type; | |
61 | struct lttng_trigger *trigger; | |
62 | uint64_t token; | |
2b00d462 | 63 | const struct lttng_bytecode *filter; |
352b58f5 JR |
64 | struct lttng_userspace_probe_location *userspace_probe_location; |
65 | struct cds_lfht_node ht_node; | |
66 | /* call_rcu delayed reclaim. */ | |
67 | struct rcu_head rcu_node; | |
68 | }; | |
69 | ||
20fe2104 DG |
70 | /* Kernel channel */ |
71 | struct ltt_kernel_channel { | |
72 | int fd; | |
e1f3997a | 73 | uint64_t key; /* Key to reference this channel with the consumer. */ |
d36b8583 | 74 | int enabled; |
8c0faa1d | 75 | unsigned int stream_count; |
cbbbb275 | 76 | unsigned int event_count; |
753873bf | 77 | bool published_to_notification_thread; |
645328ae | 78 | struct cds_list_head ctx_list; |
f3ed775e | 79 | struct lttng_channel *channel; |
20fe2104 | 80 | struct ltt_kernel_event_list events_list; |
8c0faa1d DG |
81 | struct ltt_kernel_stream_list stream_list; |
82 | struct cds_list_head list; | |
fb5f35b6 DG |
83 | /* Session pointer which has a reference to this object. */ |
84 | struct ltt_kernel_session *session; | |
e99f9447 | 85 | bool sent_to_consumer; |
20fe2104 DG |
86 | }; |
87 | ||
aaf26714 DG |
88 | /* Metadata */ |
89 | struct ltt_kernel_metadata { | |
90 | int fd; | |
d40f0359 | 91 | uint64_t key; /* Key to reference this channel with the consumer. */ |
f3ed775e | 92 | struct lttng_channel *conf; |
aaf26714 DG |
93 | }; |
94 | ||
8c0faa1d DG |
95 | /* Channel stream */ |
96 | struct ltt_kernel_stream { | |
97 | int fd; | |
8c0faa1d | 98 | int state; |
ffe60014 | 99 | int cpu; |
6986ab9b | 100 | bool sent_to_consumer; |
00e2e675 | 101 | /* Format is %s_%d respectively channel name and CPU number. */ |
ce2a9e76 | 102 | char name[DEFAULT_STREAM_NAME_LEN]; |
1624d5b7 JD |
103 | uint64_t tracefile_size; |
104 | uint64_t tracefile_count; | |
8c0faa1d DG |
105 | struct cds_list_head list; |
106 | }; | |
107 | ||
20fe2104 DG |
108 | /* Kernel session */ |
109 | struct ltt_kernel_session { | |
110 | int fd; | |
8c0faa1d | 111 | int metadata_stream_fd; |
3bd1e081 | 112 | int consumer_fds_sent; |
8c0faa1d DG |
113 | unsigned int channel_count; |
114 | unsigned int stream_count_global; | |
aaf26714 | 115 | struct ltt_kernel_metadata *metadata; |
8c0faa1d | 116 | struct ltt_kernel_channel_list channel_list; |
6df2e2c9 MD |
117 | /* UID/GID of the user owning the session */ |
118 | uid_t uid; | |
119 | gid_t gid; | |
00e2e675 | 120 | struct consumer_output *consumer; |
53632229 | 121 | /* Tracing session id */ |
d022620a | 122 | uint64_t id; |
14fb1ebe DG |
123 | /* Session is active or not meaning it has been started or stopped. */ |
124 | unsigned int active:1; | |
2bba9e53 DG |
125 | /* Tell or not if the session has to output the traces. */ |
126 | unsigned int output_traces; | |
27babd3a | 127 | unsigned int snapshot_mode; |
85076754 | 128 | unsigned int has_non_default_channel; |
a2814ea7 | 129 | bool is_live_session; |
82b69413 JG |
130 | /* Current trace chunk of the ltt_session. */ |
131 | struct lttng_trace_chunk *current_trace_chunk; | |
55c9e7ca | 132 | /* Tracker lists */ |
159b042f JG |
133 | struct process_attr_tracker *tracker_pid; |
134 | struct process_attr_tracker *tracker_vpid; | |
135 | struct process_attr_tracker *tracker_uid; | |
136 | struct process_attr_tracker *tracker_vuid; | |
137 | struct process_attr_tracker *tracker_gid; | |
138 | struct process_attr_tracker *tracker_vgid; | |
fda89c9b DG |
139 | }; |
140 | ||
62499ad6 DG |
141 | /* |
142 | * Lookup functions. NULL is returned if not found. | |
143 | */ | |
144 | struct ltt_kernel_event *trace_kernel_get_event_by_name( | |
d0ae4ea8 MD |
145 | char *name, struct ltt_kernel_channel *channel, |
146 | enum lttng_event_type type); | |
00a62084 MD |
147 | struct ltt_kernel_event *trace_kernel_find_event( |
148 | char *name, struct ltt_kernel_channel *channel, | |
149 | enum lttng_event_type type, | |
2b00d462 | 150 | struct lttng_bytecode *filter); |
62499ad6 | 151 | struct ltt_kernel_channel *trace_kernel_get_channel_by_name( |
df4f5a87 | 152 | const char *name, struct ltt_kernel_session *session); |
19e70852 | 153 | |
54012638 | 154 | /* |
c363b55d | 155 | * Create functions malloc() the data structure. |
54012638 | 156 | */ |
dec56f6c | 157 | struct ltt_kernel_session *trace_kernel_create_session(void); |
fdd9eb17 DG |
158 | struct ltt_kernel_channel *trace_kernel_create_channel( |
159 | struct lttng_channel *chan); | |
71a3bb01 | 160 | enum lttng_error_code trace_kernel_create_event(struct lttng_event *ev, |
2b00d462 | 161 | char *filter_expression, struct lttng_bytecode *filter, |
71a3bb01 | 162 | struct ltt_kernel_event **kernel_event); |
a4b92340 | 163 | struct ltt_kernel_metadata *trace_kernel_create_metadata(void); |
00e2e675 DG |
164 | struct ltt_kernel_stream *trace_kernel_create_stream(const char *name, |
165 | unsigned int count); | |
645328ae | 166 | struct ltt_kernel_context *trace_kernel_create_context( |
b8e2fb80 | 167 | struct lttng_kernel_abi_context *ctx); |
7c1f6da2 | 168 | /* Trigger is only non-const to acquire a reference. */ |
352b58f5 JR |
169 | enum lttng_error_code trace_kernel_create_event_notifier_rule( |
170 | struct lttng_trigger *trigger, | |
171 | uint64_t token, | |
90aa04a1 | 172 | uint64_t error_counter_index, |
352b58f5 | 173 | struct ltt_kernel_event_notifier_rule **event_notifier_rule); |
df3c77c8 JG |
174 | struct ltt_kernel_context *trace_kernel_copy_context( |
175 | struct ltt_kernel_context *ctx); | |
352b58f5 JR |
176 | enum lttng_error_code trace_kernel_init_event_notifier_from_event_rule( |
177 | const struct lttng_event_rule *rule, | |
b8e2fb80 | 178 | struct lttng_kernel_abi_event_notifier *kernel_event_notifier); |
54012638 | 179 | |
c363b55d DG |
180 | /* |
181 | * Destroy functions free() the data structure and remove from linked list if | |
182 | * it's applies. | |
183 | */ | |
62499ad6 DG |
184 | void trace_kernel_destroy_session(struct ltt_kernel_session *session); |
185 | void trace_kernel_destroy_metadata(struct ltt_kernel_metadata *metadata); | |
186 | void trace_kernel_destroy_channel(struct ltt_kernel_channel *channel); | |
187 | void trace_kernel_destroy_event(struct ltt_kernel_event *event); | |
188 | void trace_kernel_destroy_stream(struct ltt_kernel_stream *stream); | |
645328ae | 189 | void trace_kernel_destroy_context(struct ltt_kernel_context *ctx); |
352b58f5 | 190 | void trace_kernel_destroy_event_notifier_rule(struct ltt_kernel_event_notifier_rule *rule); |
d070c424 | 191 | void trace_kernel_free_session(struct ltt_kernel_session *session); |
c363b55d | 192 | |
62499ad6 | 193 | #endif /* _LTT_TRACE_KERNEL_H */ |