Commit | Line | Data |
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92bc1e23 MD |
1 | /* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only) |
2 | * | |
3 | * lttng/events-internal.h | |
4 | * | |
5 | * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
6 | */ | |
7 | ||
8 | #ifndef _LTTNG_EVENTS_INTERNAL_H | |
9 | #define _LTTNG_EVENTS_INTERNAL_H | |
10 | ||
c190d76e MJ |
11 | #include <wrapper/compiler_attributes.h> |
12 | ||
437d5aa5 MD |
13 | #include <lttng/events.h> |
14 | ||
344fe0f6 | 15 | struct lttng_syscall_filter; |
7c1ba2ca MD |
16 | struct lttng_metadata_cache; |
17 | struct perf_event; | |
18 | struct perf_event_attr; | |
e20c0fec | 19 | struct lttng_kernel_ring_buffer_config; |
344fe0f6 | 20 | |
311e655a MD |
21 | enum lttng_enabler_format_type { |
22 | LTTNG_ENABLER_FORMAT_STAR_GLOB, | |
23 | LTTNG_ENABLER_FORMAT_NAME, | |
24 | }; | |
25 | ||
f7d06400 MD |
26 | enum channel_type { |
27 | PER_CPU_CHANNEL, | |
28 | METADATA_CHANNEL, | |
29 | }; | |
30 | ||
311e655a MD |
31 | /* |
32 | * Objects in a linked-list of enablers, owned by an event. | |
33 | */ | |
34 | struct lttng_enabler_ref { | |
35 | struct list_head node; /* enabler ref list */ | |
8d554755 | 36 | struct lttng_event_enabler_common *ref; /* backward ref */ |
311e655a MD |
37 | }; |
38 | ||
e978f274 MD |
39 | struct lttng_krp; /* Kretprobe handling */ |
40 | ||
41 | struct lttng_uprobe_handler { | |
42 | struct lttng_kernel_event_common *event; | |
43 | loff_t offset; | |
44 | struct uprobe_consumer up_consumer; | |
45 | struct list_head node; | |
46 | }; | |
47 | ||
48 | struct lttng_kprobe { | |
49 | struct kprobe kp; | |
50 | char *symbol_name; | |
51 | }; | |
52 | ||
53 | struct lttng_uprobe { | |
54 | struct inode *inode; | |
55 | struct list_head head; | |
56 | }; | |
57 | ||
58 | enum lttng_syscall_entryexit { | |
59 | LTTNG_SYSCALL_ENTRY, | |
60 | LTTNG_SYSCALL_EXIT, | |
61 | }; | |
62 | ||
63 | enum lttng_syscall_abi { | |
64 | LTTNG_SYSCALL_ABI_NATIVE, | |
65 | LTTNG_SYSCALL_ABI_COMPAT, | |
66 | }; | |
67 | ||
a67ba386 MD |
68 | struct lttng_kernel_event_common_private { |
69 | struct lttng_kernel_event_common *pub; /* Public event interface */ | |
70 | ||
71 | const struct lttng_kernel_event_desc *desc; | |
72 | /* Backward references: list of lttng_enabler_ref (ref to enablers) */ | |
73 | struct list_head enablers_ref_head; | |
74 | int registered; /* has reg'd tracepoint probe */ | |
75 | uint64_t user_token; | |
76 | ||
77 | int has_enablers_without_filter_bytecode; | |
218585b9 | 78 | /* list of struct lttng_kernel_bytecode_runtime, sorted by seqnum */ |
a67ba386 MD |
79 | struct list_head filter_bytecode_runtime_head; |
80 | enum lttng_kernel_abi_instrumentation instrumentation; | |
81 | /* Selected by instrumentation */ | |
82 | union { | |
83 | struct lttng_kprobe kprobe; | |
84 | struct lttng_uprobe uprobe; | |
85 | struct { | |
86 | struct lttng_krp *lttng_krp; | |
87 | char *symbol_name; | |
88 | } kretprobe; | |
89 | struct { | |
90 | enum lttng_syscall_entryexit entryexit; | |
91 | enum lttng_syscall_abi abi; | |
92 | struct hlist_node node; /* chain registered syscall event_notifier */ | |
93 | unsigned int syscall_id; | |
94 | } syscall; | |
95 | } u; | |
96 | }; | |
97 | ||
98 | struct lttng_kernel_event_recorder_private { | |
99 | struct lttng_kernel_event_common_private parent; | |
100 | ||
101 | struct lttng_kernel_event_recorder *pub; /* Public event interface */ | |
102 | struct list_head node; /* Event recorder list */ | |
103 | struct hlist_node hlist; /* Hash table of event recorders */ | |
104 | struct lttng_kernel_ctx *ctx; | |
105 | unsigned int id; | |
106 | unsigned int metadata_dumped:1; | |
107 | }; | |
108 | ||
109 | struct lttng_kernel_event_notifier_private { | |
110 | struct lttng_kernel_event_common_private parent; | |
111 | ||
112 | struct lttng_kernel_event_notifier *pub; /* Public event notifier interface */ | |
113 | struct lttng_event_notifier_group *group; /* weak ref */ | |
114 | size_t num_captures; /* Needed to allocate the msgpack array. */ | |
115 | uint64_t error_counter_index; | |
116 | struct list_head node; /* Event notifier list */ | |
117 | struct hlist_node hlist; /* Hash table of event notifiers */ | |
118 | struct list_head capture_bytecode_runtime_head; | |
119 | ||
120 | }; | |
121 | ||
0bb716a8 | 122 | struct lttng_kernel_syscall_table { |
f7d06400 | 123 | unsigned int sys_enter_registered:1, |
0bb716a8 MD |
124 | sys_exit_registered:1; |
125 | ||
126 | struct hlist_head *syscall_dispatch; /* for syscall tracing */ | |
127 | struct hlist_head *compat_syscall_dispatch; | |
128 | struct hlist_head *syscall_exit_dispatch; /* for syscall exit tracing */ | |
129 | struct hlist_head *compat_syscall_exit_dispatch; | |
130 | ||
131 | /* | |
132 | * Combining all unknown syscall events works as long as they | |
133 | * are only matched by "all" syscalls enablers, but will require | |
134 | * a design change when we allow matching by syscall number, for | |
135 | * instance by allocating sc_tables accomodating NR_syscalls | |
136 | * entries. | |
137 | */ | |
138 | struct hlist_head unknown_syscall_dispatch; /* for unknown syscalls */ | |
139 | struct hlist_head compat_unknown_syscall_dispatch; | |
140 | struct hlist_head unknown_syscall_exit_dispatch; | |
141 | struct hlist_head compat_unknown_syscall_exit_dispatch; | |
142 | ||
f7d06400 MD |
143 | struct lttng_syscall_filter *sc_filter; |
144 | int syscall_all_entry; | |
145 | int syscall_all_exit; | |
146 | }; | |
147 | ||
0bb716a8 MD |
148 | struct lttng_kernel_channel_common_private { |
149 | struct lttng_kernel_channel_common *pub; | |
150 | ||
151 | struct file *file; /* File associated to channel */ | |
152 | unsigned int tstate:1; /* Transient enable state */ | |
153 | ||
154 | struct lttng_kernel_syscall_table syscall_table; | |
155 | }; | |
156 | ||
f7d06400 MD |
157 | struct lttng_kernel_channel_buffer_private { |
158 | struct lttng_kernel_channel_common_private parent; | |
159 | ||
160 | struct lttng_kernel_channel_buffer *pub; | |
161 | ||
162 | unsigned int id; /* Channel ID */ | |
163 | unsigned int free_event_id; /* Next event ID to allocate */ | |
164 | int header_type; /* 0: unset, 1: compact, 2: large */ | |
165 | ||
166 | enum channel_type channel_type; | |
167 | struct lttng_kernel_ctx *ctx; | |
860c213b | 168 | struct lttng_kernel_ring_buffer_channel *rb_chan; /* Ring buffer channel */ |
f7d06400 MD |
169 | unsigned int metadata_dumped:1; |
170 | struct list_head node; /* Channel list in session */ | |
171 | struct lttng_transport *transport; | |
172 | }; | |
173 | ||
8a445457 MD |
174 | enum lttng_kernel_bytecode_interpreter_ret { |
175 | LTTNG_KERNEL_BYTECODE_INTERPRETER_ERROR = -1, | |
176 | LTTNG_KERNEL_BYTECODE_INTERPRETER_OK = 0, | |
177 | }; | |
178 | ||
179 | enum lttng_kernel_bytecode_filter_result { | |
180 | LTTNG_KERNEL_BYTECODE_FILTER_ACCEPT = 0, | |
181 | LTTNG_KERNEL_BYTECODE_FILTER_REJECT = 1, | |
182 | }; | |
183 | ||
184 | struct lttng_kernel_bytecode_filter_ctx { | |
185 | enum lttng_kernel_bytecode_filter_result result; | |
186 | }; | |
187 | ||
1efb0502 MD |
188 | struct lttng_interpreter_output; |
189 | ||
190 | enum lttng_kernel_bytecode_type { | |
191 | LTTNG_KERNEL_BYTECODE_TYPE_FILTER, | |
192 | LTTNG_KERNEL_BYTECODE_TYPE_CAPTURE, | |
193 | }; | |
194 | ||
0bb716a8 MD |
195 | enum lttng_kernel_event_enabler_type { |
196 | LTTNG_EVENT_ENABLER_TYPE_RECORDER, | |
197 | LTTNG_EVENT_ENABLER_TYPE_NOTIFIER, | |
198 | }; | |
199 | ||
1efb0502 MD |
200 | struct lttng_kernel_bytecode_node { |
201 | enum lttng_kernel_bytecode_type type; | |
202 | struct list_head node; | |
8d554755 | 203 | struct lttng_event_enabler_common *enabler; |
1efb0502 MD |
204 | struct { |
205 | uint32_t len; | |
206 | uint32_t reloc_offset; | |
207 | uint64_t seqnum; | |
208 | char data[]; | |
209 | } bc; | |
210 | }; | |
211 | ||
212 | struct lttng_kernel_bytecode_runtime { | |
213 | /* Associated bytecode */ | |
214 | enum lttng_kernel_bytecode_type type; | |
215 | struct lttng_kernel_bytecode_node *bc; | |
216 | int (*interpreter_func)(struct lttng_kernel_bytecode_runtime *kernel_bytecode, | |
217 | const char *interpreter_stack_data, | |
218 | struct lttng_kernel_probe_ctx *lttng_probe_ctx, | |
219 | void *caller_ctx); | |
220 | int link_failed; | |
221 | struct list_head node; /* list of bytecode runtime in event */ | |
222 | struct lttng_kernel_ctx *ctx; | |
223 | }; | |
224 | ||
5e08a34f MD |
225 | /* |
226 | * Enabler field, within whatever object is enabling an event. Target of | |
227 | * backward reference. | |
228 | */ | |
8d554755 | 229 | struct lttng_event_enabler_common { |
0bb716a8 | 230 | enum lttng_kernel_event_enabler_type enabler_type; |
5e08a34f MD |
231 | enum lttng_enabler_format_type format_type; |
232 | ||
d64ca521 | 233 | /* head list of struct lttng_kernel_bytecode_node */ |
5e08a34f MD |
234 | struct list_head filter_bytecode_head; |
235 | ||
236 | struct lttng_kernel_abi_event event_param; | |
237 | unsigned int enabled:1; | |
238 | ||
239 | uint64_t user_token; /* User-provided token. */ | |
240 | }; | |
241 | ||
1ae083ba | 242 | struct lttng_event_recorder_enabler { |
5b9817ae | 243 | struct lttng_event_enabler_common parent; |
def1e304 MD |
244 | struct list_head node; /* per-session list of enablers */ |
245 | bool published; /* published in per-session list. */ | |
f7d06400 | 246 | struct lttng_kernel_channel_buffer *chan; |
5e08a34f MD |
247 | }; |
248 | ||
249 | struct lttng_event_notifier_enabler { | |
5b9817ae | 250 | struct lttng_event_enabler_common parent; |
5e08a34f MD |
251 | uint64_t error_counter_index; |
252 | struct list_head node; /* List of event_notifier enablers */ | |
253 | struct lttng_event_notifier_group *group; | |
254 | ||
d64ca521 | 255 | /* head list of struct lttng_kernel_bytecode_node */ |
5e08a34f MD |
256 | struct list_head capture_bytecode_head; |
257 | uint64_t num_captures; | |
258 | }; | |
259 | ||
0fe45627 MD |
260 | struct lttng_ctx_value { |
261 | union { | |
262 | int64_t s64; | |
263 | const char *str; | |
264 | double d; | |
265 | } u; | |
266 | }; | |
267 | ||
268 | /* | |
269 | * We need to keep this perf counter field separately from struct | |
270 | * lttng_kernel_ctx_field because cpu hotplug needs fixed-location addresses. | |
271 | */ | |
272 | struct lttng_perf_counter_field { | |
273 | #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) | |
274 | struct lttng_cpuhp_node cpuhp_prepare; | |
275 | struct lttng_cpuhp_node cpuhp_online; | |
276 | #else | |
277 | struct notifier_block nb; | |
278 | int hp_enable; | |
279 | #endif | |
280 | struct perf_event_attr *attr; | |
281 | struct perf_event **e; /* per-cpu array */ | |
282 | char *name; | |
283 | struct lttng_kernel_event_field *event_field; | |
284 | }; | |
285 | ||
286 | struct lttng_kernel_ctx_field { | |
287 | const struct lttng_kernel_event_field *event_field; | |
a92e844e | 288 | size_t (*get_size)(void *priv, struct lttng_kernel_probe_ctx *probe_ctx, |
0fe45627 | 289 | size_t offset); |
a92e844e | 290 | void (*record)(void *priv, struct lttng_kernel_probe_ctx *probe_ctx, |
8a57ec02 | 291 | struct lttng_kernel_ring_buffer_ctx *ctx, |
f7d06400 | 292 | struct lttng_kernel_channel_buffer *chan); |
a92e844e | 293 | void (*get_value)(void *priv, struct lttng_kernel_probe_ctx *probe_ctx, |
0fe45627 MD |
294 | struct lttng_ctx_value *value); |
295 | void (*destroy)(void *priv); | |
296 | void *priv; | |
297 | }; | |
298 | ||
299 | struct lttng_kernel_ctx { | |
300 | struct lttng_kernel_ctx_field *fields; | |
301 | unsigned int nr_fields; | |
302 | unsigned int allocated_fields; | |
303 | size_t largest_align; /* in bytes */ | |
304 | }; | |
305 | ||
8a20497f MD |
306 | struct lttng_metadata_cache { |
307 | char *data; /* Metadata cache */ | |
308 | unsigned int cache_alloc; /* Metadata allocated size (bytes) */ | |
309 | unsigned int metadata_written; /* Number of bytes written in metadata cache */ | |
310 | atomic_t producing; /* Metadata being produced (incomplete) */ | |
311 | struct kref refcount; /* Metadata cache usage */ | |
312 | struct list_head metadata_stream; /* Metadata stream list */ | |
313 | uuid_le uuid; /* Trace session unique ID (copy) */ | |
314 | struct mutex lock; /* Produce/consume lock */ | |
315 | uint64_t version; /* Current version of the metadata */ | |
316 | }; | |
317 | ||
a44f47dd MD |
318 | struct lttng_metadata_stream { |
319 | void *priv; /* Ring buffer private data */ | |
320 | struct lttng_metadata_cache *metadata_cache; | |
321 | unsigned int metadata_in; /* Bytes read from the cache */ | |
322 | unsigned int metadata_out; /* Bytes consumed from stream */ | |
323 | int finalized; /* Has channel been finalized */ | |
324 | wait_queue_head_t read_wait; /* Reader buffer-level wait queue */ | |
325 | struct list_head list; /* Stream list */ | |
326 | struct lttng_transport *transport; | |
327 | uint64_t version; /* Current version of the metadata cache */ | |
328 | bool coherent; /* Stream in a coherent state */ | |
329 | }; | |
330 | ||
4a399b76 MD |
331 | struct lttng_kernel_channel_buffer_ops_private { |
332 | struct lttng_kernel_channel_buffer_ops *pub; /* Public channel buffer ops interface */ | |
333 | ||
860c213b | 334 | struct lttng_kernel_ring_buffer_channel *(*channel_create)(const char *name, |
4a399b76 MD |
335 | void *priv, |
336 | void *buf_addr, | |
337 | size_t subbuf_size, size_t num_subbuf, | |
338 | unsigned int switch_timer_interval, | |
339 | unsigned int read_timer_interval); | |
860c213b | 340 | void (*channel_destroy)(struct lttng_kernel_ring_buffer_channel *chan); |
e20c0fec | 341 | struct lttng_kernel_ring_buffer *(*buffer_read_open)(struct lttng_kernel_ring_buffer_channel *chan); |
860c213b | 342 | int (*buffer_has_read_closed_stream)(struct lttng_kernel_ring_buffer_channel *chan); |
e20c0fec | 343 | void (*buffer_read_close)(struct lttng_kernel_ring_buffer *buf); |
4a399b76 MD |
344 | /* |
345 | * packet_avail_size returns the available size in the current | |
346 | * packet. Note that the size returned is only a hint, since it | |
347 | * may change due to concurrent writes. | |
348 | */ | |
860c213b MD |
349 | size_t (*packet_avail_size)(struct lttng_kernel_ring_buffer_channel *chan); |
350 | wait_queue_head_t *(*get_writer_buf_wait_queue)(struct lttng_kernel_ring_buffer_channel *chan, int cpu); | |
351 | wait_queue_head_t *(*get_hp_wait_queue)(struct lttng_kernel_ring_buffer_channel *chan); | |
352 | int (*is_finalized)(struct lttng_kernel_ring_buffer_channel *chan); | |
353 | int (*is_disabled)(struct lttng_kernel_ring_buffer_channel *chan); | |
e20c0fec MD |
354 | int (*timestamp_begin) (const struct lttng_kernel_ring_buffer_config *config, |
355 | struct lttng_kernel_ring_buffer *bufb, | |
4a399b76 | 356 | uint64_t *timestamp_begin); |
e20c0fec MD |
357 | int (*timestamp_end) (const struct lttng_kernel_ring_buffer_config *config, |
358 | struct lttng_kernel_ring_buffer *bufb, | |
4a399b76 | 359 | uint64_t *timestamp_end); |
e20c0fec MD |
360 | int (*events_discarded) (const struct lttng_kernel_ring_buffer_config *config, |
361 | struct lttng_kernel_ring_buffer *bufb, | |
4a399b76 | 362 | uint64_t *events_discarded); |
e20c0fec MD |
363 | int (*content_size) (const struct lttng_kernel_ring_buffer_config *config, |
364 | struct lttng_kernel_ring_buffer *bufb, | |
4a399b76 | 365 | uint64_t *content_size); |
e20c0fec MD |
366 | int (*packet_size) (const struct lttng_kernel_ring_buffer_config *config, |
367 | struct lttng_kernel_ring_buffer *bufb, | |
4a399b76 | 368 | uint64_t *packet_size); |
e20c0fec MD |
369 | int (*stream_id) (const struct lttng_kernel_ring_buffer_config *config, |
370 | struct lttng_kernel_ring_buffer *bufb, | |
4a399b76 | 371 | uint64_t *stream_id); |
e20c0fec MD |
372 | int (*current_timestamp) (const struct lttng_kernel_ring_buffer_config *config, |
373 | struct lttng_kernel_ring_buffer *bufb, | |
4a399b76 | 374 | uint64_t *ts); |
e20c0fec MD |
375 | int (*sequence_number) (const struct lttng_kernel_ring_buffer_config *config, |
376 | struct lttng_kernel_ring_buffer *bufb, | |
4a399b76 | 377 | uint64_t *seq); |
e20c0fec MD |
378 | int (*instance_id) (const struct lttng_kernel_ring_buffer_config *config, |
379 | struct lttng_kernel_ring_buffer *bufb, | |
4a399b76 MD |
380 | uint64_t *id); |
381 | }; | |
382 | ||
b0315544 MD |
383 | struct lttng_counter_ops { |
384 | struct lib_counter *(*counter_create)(size_t nr_dimensions, | |
385 | const size_t *max_nr_elem, /* for each dimension */ | |
386 | int64_t global_sum_step); | |
387 | void (*counter_destroy)(struct lib_counter *counter); | |
388 | int (*counter_add)(struct lib_counter *counter, const size_t *dimension_indexes, | |
389 | int64_t v); | |
390 | /* | |
391 | * counter_read reads a specific cpu's counter if @cpu >= 0, or | |
392 | * the global aggregation counter if @cpu == -1. | |
393 | */ | |
394 | int (*counter_read)(struct lib_counter *counter, const size_t *dimension_indexes, int cpu, | |
395 | int64_t *value, bool *overflow, bool *underflow); | |
396 | /* | |
397 | * counter_aggregate returns the total sum of all per-cpu counters and | |
398 | * the global aggregation counter. | |
399 | */ | |
400 | int (*counter_aggregate)(struct lib_counter *counter, const size_t *dimension_indexes, | |
401 | int64_t *value, bool *overflow, bool *underflow); | |
402 | int (*counter_clear)(struct lib_counter *counter, const size_t *dimension_indexes); | |
403 | }; | |
404 | ||
405 | struct lttng_counter { | |
406 | struct file *file; /* File associated to counter. */ | |
407 | struct file *owner; | |
408 | struct lttng_counter_transport *transport; | |
409 | struct lib_counter *counter; | |
410 | struct lttng_counter_ops *ops; | |
411 | }; | |
412 | ||
33af697f MD |
413 | #define LTTNG_EVENT_HT_BITS 12 |
414 | #define LTTNG_EVENT_HT_SIZE (1U << LTTNG_EVENT_HT_BITS) | |
9190fb56 | 415 | |
33af697f MD |
416 | struct lttng_event_ht { |
417 | struct hlist_head table[LTTNG_EVENT_HT_SIZE]; | |
9190fb56 MD |
418 | }; |
419 | ||
b0315544 MD |
420 | struct lttng_event_notifier_group { |
421 | struct file *file; /* File associated to event notifier group */ | |
422 | struct file *notif_file; /* File used to expose notifications to userspace. */ | |
423 | struct list_head node; /* event notifier group list */ | |
424 | struct list_head enablers_head; /* List of enablers */ | |
425 | struct list_head event_notifiers_head; /* List of event notifier */ | |
33af697f | 426 | struct lttng_event_ht events_ht; /* Hash table of event notifiers */ |
b0315544 MD |
427 | struct lttng_kernel_channel_buffer_ops *ops; |
428 | struct lttng_transport *transport; | |
860c213b | 429 | struct lttng_kernel_ring_buffer_channel *chan; /* Ring buffer channel for event notifier group. */ |
e20c0fec | 430 | struct lttng_kernel_ring_buffer *buf; /* Ring buffer for event notifier group. */ |
b0315544 MD |
431 | wait_queue_head_t read_wait; |
432 | struct irq_work wakeup_pending; /* Pending wakeup irq work. */ | |
b0315544 | 433 | |
0bb716a8 | 434 | struct lttng_kernel_syscall_table syscall_table; |
b0315544 MD |
435 | |
436 | struct lttng_counter *error_counter; | |
437 | size_t error_counter_len; | |
438 | }; | |
439 | ||
440 | struct lttng_transport { | |
441 | char *name; | |
442 | struct module *owner; | |
443 | struct list_head node; | |
444 | struct lttng_kernel_channel_buffer_ops ops; | |
445 | }; | |
446 | ||
447 | struct lttng_counter_transport { | |
448 | char *name; | |
449 | struct module *owner; | |
450 | struct list_head node; | |
451 | struct lttng_counter_ops ops; | |
452 | }; | |
453 | ||
8cdc1a81 MD |
454 | struct lttng_kernel_session_private { |
455 | struct lttng_kernel_session *pub; /* Public session interface */ | |
456 | ||
457 | int been_active; /* Has trace session been active ? */ | |
458 | struct file *file; /* File associated to session */ | |
459 | struct list_head chan; /* Channel list head */ | |
460 | struct list_head events; /* Event list head */ | |
461 | struct list_head list; /* Session list */ | |
462 | unsigned int free_chan_id; /* Next chan ID to allocate */ | |
463 | uuid_le uuid; /* Trace session unique ID */ | |
464 | struct lttng_metadata_cache *metadata_cache; | |
465 | unsigned int metadata_dumped:1, | |
466 | tstate:1; /* Transient enable state */ | |
467 | /* List of event enablers */ | |
468 | struct list_head enablers_head; | |
469 | /* Hash table of events */ | |
470 | struct lttng_event_ht events_ht; | |
471 | char name[LTTNG_KERNEL_ABI_SESSION_NAME_LEN]; | |
472 | char creation_time[LTTNG_KERNEL_ABI_SESSION_CREATION_TIME_ISO8601_LEN]; | |
473 | }; | |
474 | ||
fc66bf6a MD |
475 | struct lttng_id_hash_node { |
476 | struct hlist_node hlist; | |
477 | int id; | |
478 | }; | |
479 | ||
8c0393c3 MD |
480 | enum tracker_type { |
481 | TRACKER_PID, | |
482 | TRACKER_VPID, | |
483 | TRACKER_UID, | |
484 | TRACKER_VUID, | |
485 | TRACKER_GID, | |
486 | TRACKER_VGID, | |
487 | ||
488 | TRACKER_UNKNOWN, | |
489 | }; | |
490 | ||
491 | struct lttng_kernel_id_tracker_private { | |
492 | struct lttng_kernel_id_tracker *pub; /* Public interface */ | |
493 | ||
494 | struct lttng_kernel_session *session; | |
495 | enum tracker_type tracker_type; | |
496 | }; | |
497 | ||
0fe45627 MD |
498 | extern struct lttng_kernel_ctx *lttng_static_ctx; |
499 | ||
437d5aa5 MD |
500 | static inline |
501 | const struct lttng_kernel_type_integer *lttng_kernel_get_type_integer(const struct lttng_kernel_type_common *type) | |
502 | { | |
503 | if (type->type != lttng_kernel_type_integer) | |
504 | return NULL; | |
505 | return container_of(type, const struct lttng_kernel_type_integer, parent); | |
506 | } | |
507 | ||
508 | static inline | |
509 | const struct lttng_kernel_type_string *lttng_kernel_get_type_string(const struct lttng_kernel_type_common *type) | |
510 | { | |
511 | if (type->type != lttng_kernel_type_string) | |
512 | return NULL; | |
513 | return container_of(type, const struct lttng_kernel_type_string, parent); | |
514 | } | |
515 | ||
516 | static inline | |
517 | const struct lttng_kernel_type_enum *lttng_kernel_get_type_enum(const struct lttng_kernel_type_common *type) | |
518 | { | |
519 | if (type->type != lttng_kernel_type_enum) | |
520 | return NULL; | |
521 | return container_of(type, const struct lttng_kernel_type_enum, parent); | |
522 | } | |
523 | ||
524 | static inline | |
525 | const struct lttng_kernel_type_array *lttng_kernel_get_type_array(const struct lttng_kernel_type_common *type) | |
526 | { | |
527 | if (type->type != lttng_kernel_type_array) | |
528 | return NULL; | |
529 | return container_of(type, const struct lttng_kernel_type_array, parent); | |
530 | } | |
531 | ||
532 | static inline | |
533 | const struct lttng_kernel_type_sequence *lttng_kernel_get_type_sequence(const struct lttng_kernel_type_common *type) | |
534 | { | |
535 | if (type->type != lttng_kernel_type_sequence) | |
536 | return NULL; | |
537 | return container_of(type, const struct lttng_kernel_type_sequence, parent); | |
538 | } | |
539 | ||
540 | static inline | |
541 | const struct lttng_kernel_type_struct *lttng_kernel_get_type_struct(const struct lttng_kernel_type_common *type) | |
542 | { | |
543 | if (type->type != lttng_kernel_type_struct) | |
544 | return NULL; | |
545 | return container_of(type, const struct lttng_kernel_type_struct, parent); | |
546 | } | |
547 | ||
548 | static inline | |
549 | const struct lttng_kernel_type_variant *lttng_kernel_get_type_variant(const struct lttng_kernel_type_common *type) | |
550 | { | |
551 | if (type->type != lttng_kernel_type_variant) | |
552 | return NULL; | |
553 | return container_of(type, const struct lttng_kernel_type_variant, parent); | |
554 | } | |
555 | ||
556 | static inline bool lttng_kernel_type_is_bytewise_integer(const struct lttng_kernel_type_common *type) | |
557 | { | |
558 | const struct lttng_kernel_type_integer *type_integer = lttng_kernel_get_type_integer(type); | |
559 | ||
560 | if (!type_integer) | |
561 | return false; | |
562 | switch (type_integer->size) { | |
c190d76e MJ |
563 | case 8: |
564 | lttng_fallthrough; | |
565 | case 16: | |
566 | lttng_fallthrough; | |
567 | case 32: | |
568 | lttng_fallthrough; | |
437d5aa5 MD |
569 | case 64: |
570 | break; | |
571 | default: | |
572 | return false; | |
573 | } | |
574 | return true; | |
575 | } | |
576 | ||
8a445457 MD |
577 | int lttng_kernel_interpret_event_filter(const struct lttng_kernel_event_common *event, |
578 | const char *interpreter_stack_data, | |
a92e844e | 579 | struct lttng_kernel_probe_ctx *probe_ctx, |
8a445457 MD |
580 | void *event_filter_ctx); |
581 | ||
5e08a34f | 582 | static inline |
1ae083ba MD |
583 | struct lttng_event_enabler_common *lttng_event_recorder_enabler_as_enabler( |
584 | struct lttng_event_recorder_enabler *event_recorder_enabler) | |
5e08a34f | 585 | { |
1ae083ba | 586 | return &event_recorder_enabler->parent; |
5e08a34f MD |
587 | } |
588 | ||
589 | static inline | |
8d554755 | 590 | struct lttng_event_enabler_common *lttng_event_notifier_enabler_as_enabler( |
5e08a34f MD |
591 | struct lttng_event_notifier_enabler *event_notifier_enabler) |
592 | { | |
5b9817ae | 593 | return &event_notifier_enabler->parent; |
5e08a34f MD |
594 | } |
595 | ||
0fe45627 MD |
596 | int lttng_context_init(void); |
597 | void lttng_context_exit(void); | |
598 | int lttng_kernel_context_append(struct lttng_kernel_ctx **ctx_p, | |
599 | const struct lttng_kernel_ctx_field *f); | |
600 | void lttng_kernel_context_remove_last(struct lttng_kernel_ctx **ctx_p); | |
601 | struct lttng_kernel_ctx_field *lttng_kernel_get_context_field_from_index(struct lttng_kernel_ctx *ctx, | |
602 | size_t index); | |
603 | int lttng_kernel_find_context(struct lttng_kernel_ctx *ctx, const char *name); | |
604 | int lttng_kernel_get_context_index(struct lttng_kernel_ctx *ctx, const char *name); | |
605 | void lttng_kernel_destroy_context(struct lttng_kernel_ctx *ctx); | |
606 | int lttng_add_pid_to_ctx(struct lttng_kernel_ctx **ctx); | |
607 | int lttng_add_cpu_id_to_ctx(struct lttng_kernel_ctx **ctx); | |
608 | int lttng_add_procname_to_ctx(struct lttng_kernel_ctx **ctx); | |
609 | int lttng_add_prio_to_ctx(struct lttng_kernel_ctx **ctx); | |
610 | int lttng_add_nice_to_ctx(struct lttng_kernel_ctx **ctx); | |
611 | int lttng_add_vpid_to_ctx(struct lttng_kernel_ctx **ctx); | |
612 | int lttng_add_tid_to_ctx(struct lttng_kernel_ctx **ctx); | |
613 | int lttng_add_vtid_to_ctx(struct lttng_kernel_ctx **ctx); | |
614 | int lttng_add_ppid_to_ctx(struct lttng_kernel_ctx **ctx); | |
615 | int lttng_add_vppid_to_ctx(struct lttng_kernel_ctx **ctx); | |
616 | int lttng_add_hostname_to_ctx(struct lttng_kernel_ctx **ctx); | |
617 | int lttng_add_interruptible_to_ctx(struct lttng_kernel_ctx **ctx); | |
618 | int lttng_add_need_reschedule_to_ctx(struct lttng_kernel_ctx **ctx); | |
619 | #if defined(CONFIG_PREEMPT_RT_FULL) || defined(CONFIG_PREEMPT) | |
620 | int lttng_add_preemptible_to_ctx(struct lttng_kernel_ctx **ctx); | |
621 | #else | |
622 | static inline | |
623 | int lttng_add_preemptible_to_ctx(struct lttng_kernel_ctx **ctx) | |
624 | { | |
625 | return -ENOSYS; | |
626 | } | |
627 | #endif | |
628 | #ifdef CONFIG_PREEMPT_RT_FULL | |
629 | int lttng_add_migratable_to_ctx(struct lttng_kernel_ctx **ctx); | |
630 | #else | |
631 | static inline | |
632 | int lttng_add_migratable_to_ctx(struct lttng_kernel_ctx **ctx) | |
633 | { | |
634 | return -ENOSYS; | |
635 | } | |
636 | #endif | |
637 | ||
638 | int lttng_add_callstack_to_ctx(struct lttng_kernel_ctx **ctx, int type); | |
639 | ||
640 | #if defined(CONFIG_CGROUPS) && \ | |
641 | ((LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,6,0)) || \ | |
642 | LTTNG_UBUNTU_KERNEL_RANGE(4,4,0,0, 4,5,0,0)) | |
643 | int lttng_add_cgroup_ns_to_ctx(struct lttng_kernel_ctx **ctx); | |
644 | #else | |
645 | static inline | |
646 | int lttng_add_cgroup_ns_to_ctx(struct lttng_kernel_ctx **ctx) | |
647 | { | |
648 | return -ENOSYS; | |
649 | } | |
650 | #endif | |
651 | ||
652 | #if defined(CONFIG_IPC_NS) && \ | |
653 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) | |
654 | int lttng_add_ipc_ns_to_ctx(struct lttng_kernel_ctx **ctx); | |
655 | #else | |
656 | static inline | |
657 | int lttng_add_ipc_ns_to_ctx(struct lttng_kernel_ctx **ctx) | |
658 | { | |
659 | return -ENOSYS; | |
660 | } | |
661 | #endif | |
662 | ||
663 | #if !defined(LTTNG_MNT_NS_MISSING_HEADER) && \ | |
664 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) | |
665 | int lttng_add_mnt_ns_to_ctx(struct lttng_kernel_ctx **ctx); | |
666 | #else | |
667 | static inline | |
668 | int lttng_add_mnt_ns_to_ctx(struct lttng_kernel_ctx **ctx) | |
669 | { | |
670 | return -ENOSYS; | |
671 | } | |
672 | #endif | |
673 | ||
674 | #if defined(CONFIG_NET_NS) && \ | |
675 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) | |
676 | int lttng_add_net_ns_to_ctx(struct lttng_kernel_ctx **ctx); | |
677 | #else | |
678 | static inline | |
679 | int lttng_add_net_ns_to_ctx(struct lttng_kernel_ctx **ctx) | |
680 | { | |
681 | return -ENOSYS; | |
682 | } | |
683 | #endif | |
684 | ||
685 | #if defined(CONFIG_PID_NS) && \ | |
686 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) | |
687 | int lttng_add_pid_ns_to_ctx(struct lttng_kernel_ctx **ctx); | |
688 | #else | |
689 | static inline | |
690 | int lttng_add_pid_ns_to_ctx(struct lttng_kernel_ctx **ctx) | |
691 | { | |
692 | return -ENOSYS; | |
693 | } | |
694 | #endif | |
695 | ||
696 | #if defined(CONFIG_USER_NS) && \ | |
697 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) | |
698 | int lttng_add_user_ns_to_ctx(struct lttng_kernel_ctx **ctx); | |
699 | #else | |
700 | static inline | |
701 | int lttng_add_user_ns_to_ctx(struct lttng_kernel_ctx **ctx) | |
702 | { | |
703 | return -ENOSYS; | |
704 | } | |
705 | #endif | |
706 | ||
707 | #if defined(CONFIG_UTS_NS) && \ | |
708 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) | |
709 | int lttng_add_uts_ns_to_ctx(struct lttng_kernel_ctx **ctx); | |
710 | #else | |
711 | static inline | |
712 | int lttng_add_uts_ns_to_ctx(struct lttng_kernel_ctx **ctx) | |
713 | { | |
714 | return -ENOSYS; | |
715 | } | |
716 | #endif | |
717 | ||
718 | #if defined(CONFIG_TIME_NS) && \ | |
fce87a6e MJ |
719 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,6,0) || \ |
720 | LTTNG_RHEL_KERNEL_RANGE(4,18,0,305,0,0, 4,19,0,0,0,0)) | |
0fe45627 MD |
721 | int lttng_add_time_ns_to_ctx(struct lttng_kernel_ctx **ctx); |
722 | #else | |
723 | static inline | |
724 | int lttng_add_time_ns_to_ctx(struct lttng_kernel_ctx **ctx) | |
725 | { | |
726 | return -ENOSYS; | |
727 | } | |
728 | #endif | |
729 | ||
730 | int lttng_add_uid_to_ctx(struct lttng_kernel_ctx **ctx); | |
731 | int lttng_add_euid_to_ctx(struct lttng_kernel_ctx **ctx); | |
732 | int lttng_add_suid_to_ctx(struct lttng_kernel_ctx **ctx); | |
733 | int lttng_add_gid_to_ctx(struct lttng_kernel_ctx **ctx); | |
734 | int lttng_add_egid_to_ctx(struct lttng_kernel_ctx **ctx); | |
735 | int lttng_add_sgid_to_ctx(struct lttng_kernel_ctx **ctx); | |
736 | int lttng_add_vuid_to_ctx(struct lttng_kernel_ctx **ctx); | |
737 | int lttng_add_veuid_to_ctx(struct lttng_kernel_ctx **ctx); | |
738 | int lttng_add_vsuid_to_ctx(struct lttng_kernel_ctx **ctx); | |
739 | int lttng_add_vgid_to_ctx(struct lttng_kernel_ctx **ctx); | |
740 | int lttng_add_vegid_to_ctx(struct lttng_kernel_ctx **ctx); | |
741 | int lttng_add_vsgid_to_ctx(struct lttng_kernel_ctx **ctx); | |
742 | ||
743 | #if defined(CONFIG_PERF_EVENTS) | |
744 | int lttng_add_perf_counter_to_ctx(uint32_t type, | |
745 | uint64_t config, | |
746 | const char *name, | |
747 | struct lttng_kernel_ctx **ctx); | |
748 | int lttng_cpuhp_perf_counter_online(unsigned int cpu, | |
749 | struct lttng_cpuhp_node *node); | |
750 | int lttng_cpuhp_perf_counter_dead(unsigned int cpu, | |
751 | struct lttng_cpuhp_node *node); | |
752 | #else | |
753 | static inline | |
754 | int lttng_add_perf_counter_to_ctx(uint32_t type, | |
755 | uint64_t config, | |
756 | const char *name, | |
757 | struct lttng_kernel_ctx **ctx) | |
758 | { | |
759 | return -ENOSYS; | |
760 | } | |
761 | static inline | |
762 | int lttng_cpuhp_perf_counter_online(unsigned int cpu, | |
763 | struct lttng_cpuhp_node *node) | |
764 | { | |
765 | return 0; | |
766 | } | |
767 | static inline | |
768 | int lttng_cpuhp_perf_counter_dead(unsigned int cpu, | |
769 | struct lttng_cpuhp_node *node) | |
770 | { | |
771 | return 0; | |
772 | } | |
773 | #endif | |
774 | ||
1ae083ba | 775 | struct lttng_event_recorder_enabler *lttng_event_recorder_enabler_create( |
311e655a MD |
776 | enum lttng_enabler_format_type format_type, |
777 | struct lttng_kernel_abi_event *event_param, | |
f7d06400 | 778 | struct lttng_kernel_channel_buffer *chan); |
def1e304 | 779 | void lttng_event_enabler_session_add(struct lttng_kernel_session *session, |
1ae083ba | 780 | struct lttng_event_recorder_enabler *event_enabler); |
7b25ab0e | 781 | |
311e655a MD |
782 | struct lttng_event_notifier_enabler *lttng_event_notifier_enabler_create( |
783 | struct lttng_event_notifier_group *event_notifier_group, | |
784 | enum lttng_enabler_format_type format_type, | |
785 | struct lttng_kernel_abi_event_notifier *event_notifier_param); | |
311e655a MD |
786 | int lttng_event_notifier_enabler_attach_capture_bytecode( |
787 | struct lttng_event_notifier_enabler *event_notifier_enabler, | |
788 | struct lttng_kernel_abi_capture_bytecode __user *bytecode); | |
789 | ||
44b1abdc MD |
790 | int lttng_event_enabler_enable(struct lttng_event_enabler_common *event_enabler); |
791 | int lttng_event_enabler_disable(struct lttng_event_enabler_common *event_enabler); | |
792 | int lttng_event_enabler_attach_filter_bytecode(struct lttng_event_enabler_common *event_enabler, | |
793 | struct lttng_kernel_abi_filter_bytecode __user *bytecode); | |
794 | void lttng_event_enabler_destroy(struct lttng_event_enabler_common *event_enabler); | |
795 | ||
311e655a | 796 | int lttng_desc_match_enabler(const struct lttng_kernel_event_desc *desc, |
8d554755 | 797 | struct lttng_event_enabler_common *enabler); |
311e655a MD |
798 | |
799 | void lttng_enabler_link_bytecode(const struct lttng_kernel_event_desc *event_desc, | |
800 | struct lttng_kernel_ctx *ctx, | |
801 | struct list_head *instance_bytecode_runtime_head, | |
802 | struct list_head *enabler_bytecode_runtime_head); | |
803 | ||
804 | #if defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS) | |
d26015f6 | 805 | int lttng_syscalls_register_event(struct lttng_event_enabler_common *event_enabler); |
9b2f1c54 MD |
806 | int lttng_syscall_filter_enable_event(struct lttng_kernel_event_common *event); |
807 | int lttng_syscall_filter_disable_event(struct lttng_kernel_event_common *event); | |
311e655a | 808 | |
6053e75e MD |
809 | int lttng_syscalls_unregister_syscall_table(struct lttng_kernel_syscall_table *syscall_table); |
810 | int lttng_syscalls_destroy_syscall_table(struct lttng_kernel_syscall_table *syscall_table); | |
811 | ||
c970b655 | 812 | long lttng_syscall_table_get_active_mask(struct lttng_kernel_syscall_table *syscall_table, |
311e655a | 813 | struct lttng_kernel_abi_syscall_mask __user *usyscall_mask); |
311e655a | 814 | #else |
d26015f6 | 815 | static inline int lttng_syscalls_register_event(struct lttng_event_enabler_common *event_enabler) |
311e655a MD |
816 | { |
817 | return -ENOSYS; | |
818 | } | |
819 | ||
9b2f1c54 | 820 | static inline int lttng_syscall_filter_enable_event(struct lttng_kernel_event_common *event) |
311e655a | 821 | { |
6053e75e | 822 | return -ENOSYS; |
311e655a MD |
823 | } |
824 | ||
9b2f1c54 | 825 | static inline int lttng_syscall_filter_disable_event(struct lttng_kernel_event_common *event) |
311e655a | 826 | { |
6053e75e | 827 | return -ENOSYS; |
311e655a MD |
828 | } |
829 | ||
6053e75e | 830 | static inline int lttng_syscalls_unregister_syscall_table(struct lttng_kernel_syscall_table *syscall_table) |
311e655a | 831 | { |
6053e75e | 832 | return 0; |
311e655a MD |
833 | } |
834 | ||
6053e75e | 835 | static inline int lttng_syscalls_destroy_syscall_table(struct lttng_kernel_syscall_table *syscall_table) |
311e655a | 836 | { |
6053e75e | 837 | return 0; |
311e655a MD |
838 | } |
839 | ||
c970b655 MD |
840 | static inline long lttng_syscall_table_get_active_mask(struct lttng_kernel_syscall_table *syscall_table, |
841 | struct lttng_kernel_abi_syscall_mask __user *usyscall_mask) | |
311e655a MD |
842 | { |
843 | return -ENOSYS; | |
844 | } | |
845 | ||
6053e75e | 846 | static inline int lttng_syscalls_create_matching_event_notifiers(struct lttng_event_notifier_enabler *event_notifier_enabler) |
311e655a | 847 | { |
6053e75e | 848 | return -ENOSYS; |
311e655a MD |
849 | } |
850 | ||
311e655a | 851 | #endif |
0fe45627 | 852 | |
e4a26d6b MD |
853 | #ifdef CONFIG_KPROBES |
854 | int lttng_kprobes_register_event(const char *name, | |
855 | const char *symbol_name, | |
856 | uint64_t offset, | |
857 | uint64_t addr, | |
6a35e5bd MD |
858 | struct lttng_kernel_event_common *event); |
859 | void lttng_kprobes_unregister_event(struct lttng_kernel_event_common *event); | |
860 | void lttng_kprobes_destroy_event_private(struct lttng_kernel_event_common *event); | |
e4a26d6b MD |
861 | #else |
862 | static inline | |
863 | int lttng_kprobes_register_event(const char *name, | |
864 | const char *symbol_name, | |
865 | uint64_t offset, | |
866 | uint64_t addr, | |
6a35e5bd | 867 | struct lttng_kernel_event_common *event) |
e4a26d6b MD |
868 | { |
869 | return -ENOSYS; | |
870 | } | |
871 | ||
872 | static inline | |
6a35e5bd | 873 | void lttng_kprobes_unregister_event(struct lttng_kernel_event_common *event) |
e4a26d6b MD |
874 | { |
875 | } | |
876 | ||
877 | static inline | |
6a35e5bd | 878 | void lttng_kprobes_destroy_event_private(struct lttng_kernel_event_common *event) |
e4a26d6b MD |
879 | { |
880 | } | |
881 | #endif | |
882 | ||
883 | int lttng_event_add_callsite(struct lttng_kernel_event_common *event, | |
884 | struct lttng_kernel_abi_event_callsite __user *callsite); | |
885 | ||
886 | #ifdef CONFIG_UPROBES | |
887 | int lttng_uprobes_register_event(const char *name, | |
17806c46 | 888 | int fd, struct lttng_kernel_event_common *event); |
e4a26d6b MD |
889 | int lttng_uprobes_event_add_callsite(struct lttng_kernel_event_common *event, |
890 | struct lttng_kernel_abi_event_callsite __user *callsite); | |
17806c46 MD |
891 | void lttng_uprobes_unregister_event(struct lttng_kernel_event_common *event); |
892 | void lttng_uprobes_destroy_event_private(struct lttng_kernel_event_common *event); | |
e4a26d6b MD |
893 | #else |
894 | static inline | |
895 | int lttng_uprobes_register_event(const char *name, | |
17806c46 | 896 | int fd, struct lttng_kernel_event_common *event) |
e4a26d6b MD |
897 | { |
898 | return -ENOSYS; | |
899 | } | |
900 | ||
901 | static inline | |
902 | int lttng_uprobes_event_add_callsite(struct lttng_kernel_event_common *event, | |
903 | struct lttng_kernel_abi_event_callsite __user *callsite) | |
904 | { | |
905 | return -ENOSYS; | |
906 | } | |
907 | ||
908 | static inline | |
17806c46 | 909 | void lttng_uprobes_unregister_event(struct lttng_kernel_event_common *event) |
e4a26d6b MD |
910 | { |
911 | } | |
912 | ||
913 | static inline | |
17806c46 | 914 | void lttng_uprobes_destroy_event_private(struct lttng_kernel_event_common *event) |
e4a26d6b MD |
915 | { |
916 | } | |
917 | #endif | |
918 | ||
919 | #ifdef CONFIG_KRETPROBES | |
920 | int lttng_kretprobes_register(const char *name, | |
921 | const char *symbol_name, | |
922 | uint64_t offset, | |
923 | uint64_t addr, | |
eb6b47db MD |
924 | struct lttng_kernel_event_common *event_entry, |
925 | struct lttng_kernel_event_common *event_exit); | |
926 | void lttng_kretprobes_unregister(struct lttng_kernel_event_common *event); | |
927 | void lttng_kretprobes_destroy_private(struct lttng_kernel_event_common *event); | |
e4a26d6b MD |
928 | int lttng_kretprobes_event_enable_state(struct lttng_kernel_event_common *event, |
929 | int enable); | |
930 | #else | |
931 | static inline | |
932 | int lttng_kretprobes_register(const char *name, | |
933 | const char *symbol_name, | |
934 | uint64_t offset, | |
935 | uint64_t addr, | |
eb6b47db MD |
936 | struct lttng_kernel_event_common *event_entry, |
937 | struct lttng_kernel_event_common *event_exit) | |
e4a26d6b MD |
938 | { |
939 | return -ENOSYS; | |
940 | } | |
941 | ||
942 | static inline | |
eb6b47db | 943 | void lttng_kretprobes_unregister(struct lttng_kernel_event_common *event) |
e4a26d6b MD |
944 | { |
945 | } | |
946 | ||
947 | static inline | |
eb6b47db | 948 | void lttng_kretprobes_destroy_private(struct lttng_kernel_event_common *event) |
e4a26d6b MD |
949 | { |
950 | } | |
951 | ||
952 | static inline | |
953 | int lttng_kretprobes_event_enable_state(struct lttng_kernel_event_common *event, | |
954 | int enable) | |
955 | { | |
956 | return -ENOSYS; | |
957 | } | |
958 | #endif | |
959 | ||
e8c0bbd3 MD |
960 | void lttng_lock_sessions(void); |
961 | void lttng_unlock_sessions(void); | |
962 | ||
963 | struct list_head *lttng_get_probe_list_head(void); | |
964 | ||
965 | int lttng_fix_pending_events(void); | |
966 | int lttng_fix_pending_event_notifiers(void); | |
967 | int lttng_session_active(void); | |
968 | bool lttng_event_notifier_active(void); | |
969 | ||
8cdc1a81 MD |
970 | struct lttng_kernel_session *lttng_session_create(void); |
971 | int lttng_session_enable(struct lttng_kernel_session *session); | |
972 | int lttng_session_disable(struct lttng_kernel_session *session); | |
973 | void lttng_session_destroy(struct lttng_kernel_session *session); | |
974 | int lttng_session_metadata_regenerate(struct lttng_kernel_session *session); | |
975 | int lttng_session_statedump(struct lttng_kernel_session *session); | |
e8c0bbd3 MD |
976 | void metadata_cache_destroy(struct kref *kref); |
977 | ||
978 | struct lttng_counter *lttng_kernel_counter_create( | |
979 | const char *counter_transport_name, size_t number_dimensions, | |
980 | const size_t *dimensions_sizes); | |
981 | int lttng_kernel_counter_read(struct lttng_counter *counter, | |
982 | const size_t *dimension_indexes, int32_t cpu, | |
983 | int64_t *val, bool *overflow, bool *underflow); | |
984 | int lttng_kernel_counter_aggregate(struct lttng_counter *counter, | |
985 | const size_t *dimension_indexes, int64_t *val, | |
986 | bool *overflow, bool *underflow); | |
987 | int lttng_kernel_counter_clear(struct lttng_counter *counter, | |
988 | const size_t *dimension_indexes); | |
989 | struct lttng_event_notifier_group *lttng_event_notifier_group_create(void); | |
990 | int lttng_event_notifier_group_create_error_counter( | |
991 | struct file *event_notifier_group_file, | |
992 | const struct lttng_kernel_abi_counter_conf *error_counter_conf); | |
993 | void lttng_event_notifier_group_destroy( | |
994 | struct lttng_event_notifier_group *event_notifier_group); | |
995 | ||
4e252d1e | 996 | struct lttng_kernel_channel_buffer *lttng_channel_buffer_create(struct lttng_kernel_session *session, |
e8c0bbd3 MD |
997 | const char *transport_name, |
998 | void *buf_addr, | |
999 | size_t subbuf_size, size_t num_subbuf, | |
1000 | unsigned int switch_timer_interval, | |
1001 | unsigned int read_timer_interval, | |
1002 | enum channel_type channel_type); | |
f7d06400 | 1003 | struct lttng_kernel_channel_buffer *lttng_global_channel_create(struct lttng_kernel_session *session, |
e8c0bbd3 MD |
1004 | int overwrite, void *buf_addr, |
1005 | size_t subbuf_size, size_t num_subbuf, | |
1006 | unsigned int switch_timer_interval, | |
1007 | unsigned int read_timer_interval); | |
1008 | ||
f7d06400 | 1009 | void lttng_metadata_channel_destroy(struct lttng_kernel_channel_buffer *chan); |
1ae083ba | 1010 | struct lttng_kernel_event_recorder *lttng_kernel_event_recorder_create(struct lttng_event_recorder_enabler *event_enabler, |
def1e304 | 1011 | const struct lttng_kernel_event_desc *event_desc); |
1ae083ba | 1012 | struct lttng_kernel_event_recorder *_lttng_kernel_event_recorder_create(struct lttng_event_recorder_enabler *event_enabler, |
def1e304 | 1013 | const struct lttng_kernel_event_desc *event_desc); |
f7d06400 | 1014 | struct lttng_kernel_event_recorder *lttng_event_compat_old_create(struct lttng_kernel_channel_buffer *chan, |
e8c0bbd3 MD |
1015 | struct lttng_kernel_abi_old_event *old_event_param, |
1016 | const struct lttng_kernel_event_desc *internal_desc); | |
1017 | ||
1018 | struct lttng_kernel_event_notifier *lttng_event_notifier_create( | |
1019 | const struct lttng_kernel_event_desc *event_notifier_desc, | |
1020 | uint64_t id, | |
1021 | uint64_t error_counter_idx, | |
1022 | struct lttng_event_notifier_group *event_notifier_group, | |
1023 | struct lttng_kernel_abi_event_notifier *event_notifier_param, | |
1024 | enum lttng_kernel_abi_instrumentation itype); | |
1025 | struct lttng_kernel_event_notifier *_lttng_event_notifier_create( | |
1026 | const struct lttng_kernel_event_desc *event_notifier_desc, | |
1027 | uint64_t id, | |
1028 | uint64_t error_counter_idx, | |
1029 | struct lttng_event_notifier_group *event_notifier_group, | |
1030 | struct lttng_kernel_abi_event_notifier *event_notifier_param, | |
1031 | enum lttng_kernel_abi_instrumentation itype); | |
1032 | ||
6b757027 MD |
1033 | int lttng_channel_enable(struct lttng_kernel_channel_common *channel); |
1034 | int lttng_channel_disable(struct lttng_kernel_channel_common *channel); | |
e8c0bbd3 MD |
1035 | int lttng_event_enable(struct lttng_kernel_event_common *event); |
1036 | int lttng_event_disable(struct lttng_kernel_event_common *event); | |
1037 | ||
1038 | void lttng_transport_register(struct lttng_transport *transport); | |
1039 | void lttng_transport_unregister(struct lttng_transport *transport); | |
1040 | ||
1041 | void lttng_counter_transport_register(struct lttng_counter_transport *transport); | |
1042 | void lttng_counter_transport_unregister(struct lttng_counter_transport *transport); | |
1043 | ||
1044 | void synchronize_trace(void); | |
1045 | int lttng_abi_init(void); | |
1046 | int lttng_abi_compat_old_init(void); | |
1047 | void lttng_abi_exit(void); | |
1048 | void lttng_abi_compat_old_exit(void); | |
1049 | ||
1050 | const struct lttng_kernel_event_desc *lttng_event_desc_get(const char *name); | |
1051 | void lttng_event_desc_put(const struct lttng_kernel_event_desc *desc); | |
1052 | int lttng_probes_init(void); | |
1053 | void lttng_probes_exit(void); | |
1054 | ||
1055 | int lttng_metadata_output_channel(struct lttng_metadata_stream *stream, | |
860c213b | 1056 | struct lttng_kernel_ring_buffer_channel *chan, bool *coherent); |
e8c0bbd3 MD |
1057 | |
1058 | int lttng_id_tracker_get_node_id(const struct lttng_id_hash_node *node); | |
8c0393c3 MD |
1059 | int lttng_id_tracker_empty_set(struct lttng_kernel_id_tracker *lf); |
1060 | int lttng_id_tracker_init(struct lttng_kernel_id_tracker *lf, | |
1061 | struct lttng_kernel_session *session, | |
1062 | enum tracker_type type); | |
1063 | void lttng_id_tracker_fini(struct lttng_kernel_id_tracker *lf); | |
1064 | void lttng_id_tracker_destroy(struct lttng_kernel_id_tracker *lf, bool rcu); | |
1065 | int lttng_id_tracker_add(struct lttng_kernel_id_tracker *lf, int id); | |
1066 | int lttng_id_tracker_del(struct lttng_kernel_id_tracker *lf, int id); | |
e8c0bbd3 | 1067 | |
8cdc1a81 | 1068 | int lttng_session_track_id(struct lttng_kernel_session *session, |
e8c0bbd3 | 1069 | enum tracker_type tracker_type, int id); |
8cdc1a81 | 1070 | int lttng_session_untrack_id(struct lttng_kernel_session *session, |
e8c0bbd3 MD |
1071 | enum tracker_type tracker_type, int id); |
1072 | ||
8cdc1a81 | 1073 | int lttng_session_list_tracker_ids(struct lttng_kernel_session *session, |
e8c0bbd3 MD |
1074 | enum tracker_type tracker_type); |
1075 | ||
1076 | void lttng_clock_ref(void); | |
1077 | void lttng_clock_unref(void); | |
1078 | ||
1079 | void lttng_free_event_filter_runtime(struct lttng_kernel_event_common *event); | |
1080 | ||
1081 | int lttng_probes_init(void); | |
1082 | ||
1083 | int lttng_logger_init(void); | |
1084 | void lttng_logger_exit(void); | |
1085 | ||
8cdc1a81 | 1086 | extern int lttng_statedump_start(struct lttng_kernel_session *session); |
e8c0bbd3 MD |
1087 | |
1088 | int lttng_calibrate(struct lttng_kernel_abi_calibrate *calibrate); | |
1089 | ||
1090 | extern const struct file_operations lttng_tracepoint_list_fops; | |
1091 | extern const struct file_operations lttng_syscall_list_fops; | |
1092 | ||
0fe45627 MD |
1093 | #define lttng_kernel_static_ctx_field(_event_field, _get_size, _record, _get_value, _destroy, _priv) \ |
1094 | __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_ctx_field, { \ | |
1095 | .event_field = (_event_field), \ | |
1096 | .get_size = (_get_size), \ | |
1097 | .record = (_record), \ | |
1098 | .get_value = (_get_value), \ | |
1099 | .destroy = (_destroy), \ | |
1100 | .priv = (_priv), \ | |
1101 | }) | |
1102 | ||
92bc1e23 | 1103 | #endif /* _LTTNG_EVENTS_INTERNAL_H */ |