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Use event enabler for event recorder creation for all instrumentation types
[lttng-modules.git] / include / lttng / events-internal.h
CommitLineData
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 15struct lttng_syscall_filter;
7c1ba2ca
MD		 16struct lttng_metadata_cache;
17struct perf_event;
18struct perf_event_attr;
e20c0fec 19struct lttng_kernel_ring_buffer_config;
344fe0f6 20
311e655a
MD		 21enum lttng_enabler_format_type {
22 LTTNG_ENABLER_FORMAT_STAR_GLOB,
23 LTTNG_ENABLER_FORMAT_NAME,
24};
25
f7d06400
MD		 26enum 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 */
34struct lttng_enabler_ref {
35 struct list_head node; /* enabler ref list */
36 struct lttng_enabler *ref; /* backward ref */
37};
38
e978f274
MD		 39struct lttng_krp; /* Kretprobe handling */
40
41struct 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
48struct lttng_kprobe {
49 struct kprobe kp;
50 char *symbol_name;
51};
52
53struct lttng_uprobe {
54 struct inode *inode;
55 struct list_head head;
56};
57
58enum lttng_syscall_entryexit {
59 LTTNG_SYSCALL_ENTRY,
60 LTTNG_SYSCALL_EXIT,
61};
62
63enum lttng_syscall_abi {
64 LTTNG_SYSCALL_ABI_NATIVE,
65 LTTNG_SYSCALL_ABI_COMPAT,
66};
67
a67ba386
MD		 68struct 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
98struct 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
109struct 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
f7d06400
MD		 122struct lttng_kernel_channel_common_private {
123 struct lttng_kernel_channel_common *pub;
124
125 struct file *file; /* File associated to channel */
126 unsigned int sys_enter_registered:1,
127 sys_exit_registered:1,
128 tstate:1; /* Transient enable state */
129
130 struct hlist_head *sc_table; /* for syscall tracing */
131 struct hlist_head *compat_sc_table;
132 struct hlist_head *sc_exit_table; /* for syscall exit tracing */
133 struct hlist_head *compat_sc_exit_table;
134 struct hlist_head sc_unknown; /* for unknown syscalls */
135 struct hlist_head sc_compat_unknown;
136 struct hlist_head sc_exit_unknown;
137 struct hlist_head compat_sc_exit_unknown;
138 struct lttng_syscall_filter *sc_filter;
139 int syscall_all_entry;
140 int syscall_all_exit;
141};
142
143struct lttng_kernel_channel_buffer_private {
144 struct lttng_kernel_channel_common_private parent;
145
146 struct lttng_kernel_channel_buffer *pub;
147
148 unsigned int id; /* Channel ID */
149 unsigned int free_event_id; /* Next event ID to allocate */
150 int header_type; /* 0: unset, 1: compact, 2: large */
151
152 enum channel_type channel_type;
153 struct lttng_kernel_ctx *ctx;
860c213b 154 struct lttng_kernel_ring_buffer_channel *rb_chan; /* Ring buffer channel */
f7d06400
MD		 155 unsigned int metadata_dumped:1;
156 struct list_head node; /* Channel list in session */
157 struct lttng_transport *transport;
158};
159
8a445457
MD		 160enum lttng_kernel_bytecode_interpreter_ret {
161 LTTNG_KERNEL_BYTECODE_INTERPRETER_ERROR = -1,
162 LTTNG_KERNEL_BYTECODE_INTERPRETER_OK = 0,
163};
164
165enum lttng_kernel_bytecode_filter_result {
166 LTTNG_KERNEL_BYTECODE_FILTER_ACCEPT = 0,
167 LTTNG_KERNEL_BYTECODE_FILTER_REJECT = 1,
168};
169
170struct lttng_kernel_bytecode_filter_ctx {
171 enum lttng_kernel_bytecode_filter_result result;
172};
173
1efb0502
MD		 174struct lttng_interpreter_output;
175
176enum lttng_kernel_bytecode_type {
177 LTTNG_KERNEL_BYTECODE_TYPE_FILTER,
178 LTTNG_KERNEL_BYTECODE_TYPE_CAPTURE,
179};
180
181struct lttng_kernel_bytecode_node {
182 enum lttng_kernel_bytecode_type type;
183 struct list_head node;
184 struct lttng_enabler *enabler;
185 struct {
186 uint32_t len;
187 uint32_t reloc_offset;
188 uint64_t seqnum;
189 char data[];
190 } bc;
191};
192
193struct lttng_kernel_bytecode_runtime {
194 /* Associated bytecode */
195 enum lttng_kernel_bytecode_type type;
196 struct lttng_kernel_bytecode_node *bc;
197 int (*interpreter_func)(struct lttng_kernel_bytecode_runtime *kernel_bytecode,
198 const char *interpreter_stack_data,
199 struct lttng_kernel_probe_ctx *lttng_probe_ctx,
200 void *caller_ctx);
201 int link_failed;
202 struct list_head node; /* list of bytecode runtime in event */
203 struct lttng_kernel_ctx *ctx;
204};
205
5e08a34f
MD		 206/*
207 * Enabler field, within whatever object is enabling an event. Target of
208 * backward reference.
209 */
210struct lttng_enabler {
211 enum lttng_enabler_format_type format_type;
212
d64ca521 213 /* head list of struct lttng_kernel_bytecode_node */
5e08a34f
MD		 214 struct list_head filter_bytecode_head;
215
216 struct lttng_kernel_abi_event event_param;
217 unsigned int enabled:1;
218
219 uint64_t user_token; /* User-provided token. */
220};
221
222struct lttng_event_enabler {
223 struct lttng_enabler base;
def1e304
MD		 224 struct list_head node; /* per-session list of enablers */
225 bool published; /* published in per-session list. */
f7d06400 226 struct lttng_kernel_channel_buffer *chan;
5e08a34f
MD		 227};
228
229struct lttng_event_notifier_enabler {
230 struct lttng_enabler base;
231 uint64_t error_counter_index;
232 struct list_head node; /* List of event_notifier enablers */
233 struct lttng_event_notifier_group *group;
234
d64ca521 235 /* head list of struct lttng_kernel_bytecode_node */
5e08a34f
MD		 236 struct list_head capture_bytecode_head;
237 uint64_t num_captures;
238};
239
0fe45627
MD		 240struct lttng_ctx_value {
241 union {
242 int64_t s64;
243 const char *str;
244 double d;
245 } u;
246};
247
248/*
249 * We need to keep this perf counter field separately from struct
250 * lttng_kernel_ctx_field because cpu hotplug needs fixed-location addresses.
251 */
252struct lttng_perf_counter_field {
253#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0))
254 struct lttng_cpuhp_node cpuhp_prepare;
255 struct lttng_cpuhp_node cpuhp_online;
256#else
257 struct notifier_block nb;
258 int hp_enable;
259#endif
260 struct perf_event_attr *attr;
261 struct perf_event **e; /* per-cpu array */
262 char *name;
263 struct lttng_kernel_event_field *event_field;
264};
265
266struct lttng_kernel_ctx_field {
267 const struct lttng_kernel_event_field *event_field;
a92e844e 268 size_t (*get_size)(void *priv, struct lttng_kernel_probe_ctx *probe_ctx,
0fe45627 269 size_t offset);
a92e844e 270 void (*record)(void *priv, struct lttng_kernel_probe_ctx *probe_ctx,
8a57ec02 271 struct lttng_kernel_ring_buffer_ctx *ctx,
f7d06400 272 struct lttng_kernel_channel_buffer *chan);
a92e844e 273 void (*get_value)(void *priv, struct lttng_kernel_probe_ctx *probe_ctx,
0fe45627
MD		 274 struct lttng_ctx_value *value);
275 void (*destroy)(void *priv);
276 void *priv;
277};
278
279struct lttng_kernel_ctx {
280 struct lttng_kernel_ctx_field *fields;
281 unsigned int nr_fields;
282 unsigned int allocated_fields;
283 size_t largest_align; /* in bytes */
284};
285
8a20497f
MD		 286struct lttng_metadata_cache {
287 char *data; /* Metadata cache */
288 unsigned int cache_alloc; /* Metadata allocated size (bytes) */
289 unsigned int metadata_written; /* Number of bytes written in metadata cache */
290 atomic_t producing; /* Metadata being produced (incomplete) */
291 struct kref refcount; /* Metadata cache usage */
292 struct list_head metadata_stream; /* Metadata stream list */
293 uuid_le uuid; /* Trace session unique ID (copy) */
294 struct mutex lock; /* Produce/consume lock */
295 uint64_t version; /* Current version of the metadata */
296};
297
a44f47dd
MD		 298struct lttng_metadata_stream {
299 void *priv; /* Ring buffer private data */
300 struct lttng_metadata_cache *metadata_cache;
301 unsigned int metadata_in; /* Bytes read from the cache */
302 unsigned int metadata_out; /* Bytes consumed from stream */
303 int finalized; /* Has channel been finalized */
304 wait_queue_head_t read_wait; /* Reader buffer-level wait queue */
305 struct list_head list; /* Stream list */
306 struct lttng_transport *transport;
307 uint64_t version; /* Current version of the metadata cache */
308 bool coherent; /* Stream in a coherent state */
309};
310
4a399b76
MD		 311struct lttng_kernel_channel_buffer_ops_private {
312 struct lttng_kernel_channel_buffer_ops *pub; /* Public channel buffer ops interface */
313
860c213b 314 struct lttng_kernel_ring_buffer_channel *(*channel_create)(const char *name,
4a399b76
MD		 315 void *priv,
316 void *buf_addr,
317 size_t subbuf_size, size_t num_subbuf,
318 unsigned int switch_timer_interval,
319 unsigned int read_timer_interval);
860c213b 320 void (*channel_destroy)(struct lttng_kernel_ring_buffer_channel *chan);
e20c0fec 321 struct lttng_kernel_ring_buffer *(*buffer_read_open)(struct lttng_kernel_ring_buffer_channel *chan);
860c213b 322 int (*buffer_has_read_closed_stream)(struct lttng_kernel_ring_buffer_channel *chan);
e20c0fec 323 void (*buffer_read_close)(struct lttng_kernel_ring_buffer *buf);
4a399b76
MD		 324 /*
325 * packet_avail_size returns the available size in the current
326 * packet. Note that the size returned is only a hint, since it
327 * may change due to concurrent writes.
328 */
860c213b
MD		 329 size_t (*packet_avail_size)(struct lttng_kernel_ring_buffer_channel *chan);
330 wait_queue_head_t *(*get_writer_buf_wait_queue)(struct lttng_kernel_ring_buffer_channel *chan, int cpu);
331 wait_queue_head_t *(*get_hp_wait_queue)(struct lttng_kernel_ring_buffer_channel *chan);
332 int (*is_finalized)(struct lttng_kernel_ring_buffer_channel *chan);
333 int (*is_disabled)(struct lttng_kernel_ring_buffer_channel *chan);
e20c0fec
MD		 334 int (*timestamp_begin) (const struct lttng_kernel_ring_buffer_config *config,
335 struct lttng_kernel_ring_buffer *bufb,
4a399b76 336 uint64_t *timestamp_begin);
e20c0fec
MD		 337 int (*timestamp_end) (const struct lttng_kernel_ring_buffer_config *config,
338 struct lttng_kernel_ring_buffer *bufb,
4a399b76 339 uint64_t *timestamp_end);
e20c0fec
MD		 340 int (*events_discarded) (const struct lttng_kernel_ring_buffer_config *config,
341 struct lttng_kernel_ring_buffer *bufb,
4a399b76 342 uint64_t *events_discarded);
e20c0fec
MD		 343 int (*content_size) (const struct lttng_kernel_ring_buffer_config *config,
344 struct lttng_kernel_ring_buffer *bufb,
4a399b76 345 uint64_t *content_size);
e20c0fec
MD		 346 int (*packet_size) (const struct lttng_kernel_ring_buffer_config *config,
347 struct lttng_kernel_ring_buffer *bufb,
4a399b76 348 uint64_t *packet_size);
e20c0fec
MD		 349 int (*stream_id) (const struct lttng_kernel_ring_buffer_config *config,
350 struct lttng_kernel_ring_buffer *bufb,
4a399b76 351 uint64_t *stream_id);
e20c0fec
MD		 352 int (*current_timestamp) (const struct lttng_kernel_ring_buffer_config *config,
353 struct lttng_kernel_ring_buffer *bufb,
4a399b76 354 uint64_t *ts);
e20c0fec
MD		 355 int (*sequence_number) (const struct lttng_kernel_ring_buffer_config *config,
356 struct lttng_kernel_ring_buffer *bufb,
4a399b76 357 uint64_t *seq);
e20c0fec
MD		 358 int (*instance_id) (const struct lttng_kernel_ring_buffer_config *config,
359 struct lttng_kernel_ring_buffer *bufb,
4a399b76
MD		 360 uint64_t *id);
361};
362
b0315544
MD		 363struct lttng_counter_ops {
364 struct lib_counter *(*counter_create)(size_t nr_dimensions,
365 const size_t *max_nr_elem, /* for each dimension */
366 int64_t global_sum_step);
367 void (*counter_destroy)(struct lib_counter *counter);
368 int (*counter_add)(struct lib_counter *counter, const size_t *dimension_indexes,
369 int64_t v);
370 /*
371 * counter_read reads a specific cpu's counter if @cpu >= 0, or
372 * the global aggregation counter if @cpu == -1.
373 */
374 int (*counter_read)(struct lib_counter *counter, const size_t *dimension_indexes, int cpu,
375 int64_t *value, bool *overflow, bool *underflow);
376 /*
377 * counter_aggregate returns the total sum of all per-cpu counters and
378 * the global aggregation counter.
379 */
380 int (*counter_aggregate)(struct lib_counter *counter, const size_t *dimension_indexes,
381 int64_t *value, bool *overflow, bool *underflow);
382 int (*counter_clear)(struct lib_counter *counter, const size_t *dimension_indexes);
383};
384
385struct lttng_counter {
386 struct file *file; /* File associated to counter. */
387 struct file *owner;
388 struct lttng_counter_transport *transport;
389 struct lib_counter *counter;
390 struct lttng_counter_ops *ops;
391};
392
9190fb56
MD		 393#define LTTNG_EVENT_NOTIFIER_HT_BITS 12
394#define LTTNG_EVENT_NOTIFIER_HT_SIZE (1U << LTTNG_EVENT_NOTIFIER_HT_BITS)
395
396struct lttng_event_notifier_ht {
397 struct hlist_head table[LTTNG_EVENT_NOTIFIER_HT_SIZE];
398};
399
b0315544
MD		 400struct lttng_event_notifier_group {
401 struct file *file; /* File associated to event notifier group */
402 struct file *notif_file; /* File used to expose notifications to userspace. */
403 struct list_head node; /* event notifier group list */
404 struct list_head enablers_head; /* List of enablers */
405 struct list_head event_notifiers_head; /* List of event notifier */
406 struct lttng_event_notifier_ht event_notifiers_ht; /* Hash table of event notifiers */
407 struct lttng_kernel_channel_buffer_ops *ops;
408 struct lttng_transport *transport;
860c213b 409 struct lttng_kernel_ring_buffer_channel *chan; /* Ring buffer channel for event notifier group. */
e20c0fec 410 struct lttng_kernel_ring_buffer *buf; /* Ring buffer for event notifier group. */
b0315544
MD		 411 wait_queue_head_t read_wait;
412 struct irq_work wakeup_pending; /* Pending wakeup irq work. */
413 struct lttng_kernel_event_notifier *sc_unknown; /* for unknown syscalls */
414 struct lttng_kernel_event_notifier *sc_compat_unknown;
415
416 struct lttng_syscall_filter *sc_filter;
417
418 struct hlist_head *event_notifier_syscall_dispatch;
419 struct hlist_head *event_notifier_compat_syscall_dispatch;
420 struct hlist_head *event_notifier_exit_syscall_dispatch;
421 struct hlist_head *event_notifier_exit_compat_syscall_dispatch;
422
423 struct hlist_head event_notifier_unknown_syscall_dispatch;
424 struct hlist_head event_notifier_compat_unknown_syscall_dispatch;
425 struct hlist_head event_notifier_exit_unknown_syscall_dispatch;
426 struct hlist_head event_notifier_exit_compat_unknown_syscall_dispatch;
427
428 int syscall_all_entry;
429 int syscall_all_exit;
430
431 unsigned int sys_enter_registered:1, sys_exit_registered:1;
432
433 struct lttng_counter *error_counter;
434 size_t error_counter_len;
435};
436
437struct lttng_transport {
438 char *name;
439 struct module *owner;
440 struct list_head node;
441 struct lttng_kernel_channel_buffer_ops ops;
442};
443
444struct lttng_counter_transport {
445 char *name;
446 struct module *owner;
447 struct list_head node;
448 struct lttng_counter_ops ops;
449};
450
9190fb56
MD		 451#define LTTNG_EVENT_HT_BITS 12
452#define LTTNG_EVENT_HT_SIZE (1U << LTTNG_EVENT_HT_BITS)
453
454struct lttng_event_ht {
455 struct hlist_head table[LTTNG_EVENT_HT_SIZE];
456};
457
8cdc1a81
MD		 458struct lttng_kernel_session_private {
459 struct lttng_kernel_session *pub; /* Public session interface */
460
461 int been_active; /* Has trace session been active ? */
462 struct file *file; /* File associated to session */
463 struct list_head chan; /* Channel list head */
464 struct list_head events; /* Event list head */
465 struct list_head list; /* Session list */
466 unsigned int free_chan_id; /* Next chan ID to allocate */
467 uuid_le uuid; /* Trace session unique ID */
468 struct lttng_metadata_cache *metadata_cache;
469 unsigned int metadata_dumped:1,
470 tstate:1; /* Transient enable state */
471 /* List of event enablers */
472 struct list_head enablers_head;
473 /* Hash table of events */
474 struct lttng_event_ht events_ht;
475 char name[LTTNG_KERNEL_ABI_SESSION_NAME_LEN];
476 char creation_time[LTTNG_KERNEL_ABI_SESSION_CREATION_TIME_ISO8601_LEN];
477};
478
fc66bf6a
MD		 479struct lttng_id_hash_node {
480 struct hlist_node hlist;
481 int id;
482};
483
8c0393c3
MD		 484enum tracker_type {
485 TRACKER_PID,
486 TRACKER_VPID,
487 TRACKER_UID,
488 TRACKER_VUID,
489 TRACKER_GID,
490 TRACKER_VGID,
491
492 TRACKER_UNKNOWN,
493};
494
495struct lttng_kernel_id_tracker_private {
496 struct lttng_kernel_id_tracker *pub; /* Public interface */
497
498 struct lttng_kernel_session *session;
499 enum tracker_type tracker_type;
500};
501
0fe45627
MD		 502extern struct lttng_kernel_ctx *lttng_static_ctx;
503
437d5aa5
MD		 504static inline
505const struct lttng_kernel_type_integer *lttng_kernel_get_type_integer(const struct lttng_kernel_type_common *type)
506{
507 if (type->type != lttng_kernel_type_integer)
508 return NULL;
509 return container_of(type, const struct lttng_kernel_type_integer, parent);
510}
511
512static inline
513const struct lttng_kernel_type_string *lttng_kernel_get_type_string(const struct lttng_kernel_type_common *type)
514{
515 if (type->type != lttng_kernel_type_string)
516 return NULL;
517 return container_of(type, const struct lttng_kernel_type_string, parent);
518}
519
520static inline
521const struct lttng_kernel_type_enum *lttng_kernel_get_type_enum(const struct lttng_kernel_type_common *type)
522{
523 if (type->type != lttng_kernel_type_enum)
524 return NULL;
525 return container_of(type, const struct lttng_kernel_type_enum, parent);
526}
527
528static inline
529const struct lttng_kernel_type_array *lttng_kernel_get_type_array(const struct lttng_kernel_type_common *type)
530{
531 if (type->type != lttng_kernel_type_array)
532 return NULL;
533 return container_of(type, const struct lttng_kernel_type_array, parent);
534}
535
536static inline
537const struct lttng_kernel_type_sequence *lttng_kernel_get_type_sequence(const struct lttng_kernel_type_common *type)
538{
539 if (type->type != lttng_kernel_type_sequence)
540 return NULL;
541 return container_of(type, const struct lttng_kernel_type_sequence, parent);
542}
543
544static inline
545const struct lttng_kernel_type_struct *lttng_kernel_get_type_struct(const struct lttng_kernel_type_common *type)
546{
547 if (type->type != lttng_kernel_type_struct)
548 return NULL;
549 return container_of(type, const struct lttng_kernel_type_struct, parent);
550}
551
552static inline
553const struct lttng_kernel_type_variant *lttng_kernel_get_type_variant(const struct lttng_kernel_type_common *type)
554{
555 if (type->type != lttng_kernel_type_variant)
556 return NULL;
557 return container_of(type, const struct lttng_kernel_type_variant, parent);
558}
559
560static inline bool lttng_kernel_type_is_bytewise_integer(const struct lttng_kernel_type_common *type)
561{
562 const struct lttng_kernel_type_integer *type_integer = lttng_kernel_get_type_integer(type);
563
564 if (!type_integer)
565 return false;
566 switch (type_integer->size) {
c190d76e
MJ		 567 case 8:
568 lttng_fallthrough;
569 case 16:
570 lttng_fallthrough;
571 case 32:
572 lttng_fallthrough;
437d5aa5
MD		 573 case 64:
574 break;
575 default:
576 return false;
577 }
578 return true;
579}
580
8a445457
MD		 581int lttng_kernel_interpret_event_filter(const struct lttng_kernel_event_common *event,
582 const char *interpreter_stack_data,
a92e844e 583 struct lttng_kernel_probe_ctx *probe_ctx,
8a445457
MD		 584 void *event_filter_ctx);
585
5e08a34f
MD		 586static inline
587struct lttng_enabler *lttng_event_enabler_as_enabler(
588 struct lttng_event_enabler *event_enabler)
589{
590 return &event_enabler->base;
591}
592
593static inline
594struct lttng_enabler *lttng_event_notifier_enabler_as_enabler(
595 struct lttng_event_notifier_enabler *event_notifier_enabler)
596{
597 return &event_notifier_enabler->base;
598}
599
0fe45627
MD		 600int lttng_context_init(void);
601void lttng_context_exit(void);
602int lttng_kernel_context_append(struct lttng_kernel_ctx **ctx_p,
603 const struct lttng_kernel_ctx_field *f);
604void lttng_kernel_context_remove_last(struct lttng_kernel_ctx **ctx_p);
605struct lttng_kernel_ctx_field *lttng_kernel_get_context_field_from_index(struct lttng_kernel_ctx *ctx,
606 size_t index);
607int lttng_kernel_find_context(struct lttng_kernel_ctx *ctx, const char *name);
608int lttng_kernel_get_context_index(struct lttng_kernel_ctx *ctx, const char *name);
609void lttng_kernel_destroy_context(struct lttng_kernel_ctx *ctx);
610int lttng_add_pid_to_ctx(struct lttng_kernel_ctx **ctx);
611int lttng_add_cpu_id_to_ctx(struct lttng_kernel_ctx **ctx);
612int lttng_add_procname_to_ctx(struct lttng_kernel_ctx **ctx);
613int lttng_add_prio_to_ctx(struct lttng_kernel_ctx **ctx);
614int lttng_add_nice_to_ctx(struct lttng_kernel_ctx **ctx);
615int lttng_add_vpid_to_ctx(struct lttng_kernel_ctx **ctx);
616int lttng_add_tid_to_ctx(struct lttng_kernel_ctx **ctx);
617int lttng_add_vtid_to_ctx(struct lttng_kernel_ctx **ctx);
618int lttng_add_ppid_to_ctx(struct lttng_kernel_ctx **ctx);
619int lttng_add_vppid_to_ctx(struct lttng_kernel_ctx **ctx);
620int lttng_add_hostname_to_ctx(struct lttng_kernel_ctx **ctx);
621int lttng_add_interruptible_to_ctx(struct lttng_kernel_ctx **ctx);
622int lttng_add_need_reschedule_to_ctx(struct lttng_kernel_ctx **ctx);
623#if defined(CONFIG_PREEMPT_RT_FULL) || defined(CONFIG_PREEMPT)
624int lttng_add_preemptible_to_ctx(struct lttng_kernel_ctx **ctx);
625#else
626static inline
627int lttng_add_preemptible_to_ctx(struct lttng_kernel_ctx **ctx)
628{
629 return -ENOSYS;
630}
631#endif
632#ifdef CONFIG_PREEMPT_RT_FULL
633int lttng_add_migratable_to_ctx(struct lttng_kernel_ctx **ctx);
634#else
635static inline
636int lttng_add_migratable_to_ctx(struct lttng_kernel_ctx **ctx)
637{
638 return -ENOSYS;
639}
640#endif
641
642int lttng_add_callstack_to_ctx(struct lttng_kernel_ctx **ctx, int type);
643
644#if defined(CONFIG_CGROUPS) && \
645 ((LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,6,0)) || \
646 LTTNG_UBUNTU_KERNEL_RANGE(4,4,0,0, 4,5,0,0))
647int lttng_add_cgroup_ns_to_ctx(struct lttng_kernel_ctx **ctx);
648#else
649static inline
650int lttng_add_cgroup_ns_to_ctx(struct lttng_kernel_ctx **ctx)
651{
652 return -ENOSYS;
653}
654#endif
655
656#if defined(CONFIG_IPC_NS) && \
657 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
658int lttng_add_ipc_ns_to_ctx(struct lttng_kernel_ctx **ctx);
659#else
660static inline
661int lttng_add_ipc_ns_to_ctx(struct lttng_kernel_ctx **ctx)
662{
663 return -ENOSYS;
664}
665#endif
666
667#if !defined(LTTNG_MNT_NS_MISSING_HEADER) && \
668 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
669int lttng_add_mnt_ns_to_ctx(struct lttng_kernel_ctx **ctx);
670#else
671static inline
672int lttng_add_mnt_ns_to_ctx(struct lttng_kernel_ctx **ctx)
673{
674 return -ENOSYS;
675}
676#endif
677
678#if defined(CONFIG_NET_NS) && \
679 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
680int lttng_add_net_ns_to_ctx(struct lttng_kernel_ctx **ctx);
681#else
682static inline
683int lttng_add_net_ns_to_ctx(struct lttng_kernel_ctx **ctx)
684{
685 return -ENOSYS;
686}
687#endif
688
689#if defined(CONFIG_PID_NS) && \
690 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
691int lttng_add_pid_ns_to_ctx(struct lttng_kernel_ctx **ctx);
692#else
693static inline
694int lttng_add_pid_ns_to_ctx(struct lttng_kernel_ctx **ctx)
695{
696 return -ENOSYS;
697}
698#endif
699
700#if defined(CONFIG_USER_NS) && \
701 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
702int lttng_add_user_ns_to_ctx(struct lttng_kernel_ctx **ctx);
703#else
704static inline
705int lttng_add_user_ns_to_ctx(struct lttng_kernel_ctx **ctx)
706{
707 return -ENOSYS;
708}
709#endif
710
711#if defined(CONFIG_UTS_NS) && \
712 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
713int lttng_add_uts_ns_to_ctx(struct lttng_kernel_ctx **ctx);
714#else
715static inline
716int lttng_add_uts_ns_to_ctx(struct lttng_kernel_ctx **ctx)
717{
718 return -ENOSYS;
719}
720#endif
721
722#if defined(CONFIG_TIME_NS) && \
fce87a6e
MJ		 723 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,6,0) || \
724 LTTNG_RHEL_KERNEL_RANGE(4,18,0,305,0,0, 4,19,0,0,0,0))
0fe45627
MD		 725int lttng_add_time_ns_to_ctx(struct lttng_kernel_ctx **ctx);
726#else
727static inline
728int lttng_add_time_ns_to_ctx(struct lttng_kernel_ctx **ctx)
729{
730 return -ENOSYS;
731}
732#endif
733
734int lttng_add_uid_to_ctx(struct lttng_kernel_ctx **ctx);
735int lttng_add_euid_to_ctx(struct lttng_kernel_ctx **ctx);
736int lttng_add_suid_to_ctx(struct lttng_kernel_ctx **ctx);
737int lttng_add_gid_to_ctx(struct lttng_kernel_ctx **ctx);
738int lttng_add_egid_to_ctx(struct lttng_kernel_ctx **ctx);
739int lttng_add_sgid_to_ctx(struct lttng_kernel_ctx **ctx);
740int lttng_add_vuid_to_ctx(struct lttng_kernel_ctx **ctx);
741int lttng_add_veuid_to_ctx(struct lttng_kernel_ctx **ctx);
742int lttng_add_vsuid_to_ctx(struct lttng_kernel_ctx **ctx);
743int lttng_add_vgid_to_ctx(struct lttng_kernel_ctx **ctx);
744int lttng_add_vegid_to_ctx(struct lttng_kernel_ctx **ctx);
745int lttng_add_vsgid_to_ctx(struct lttng_kernel_ctx **ctx);
746
747#if defined(CONFIG_PERF_EVENTS)
748int lttng_add_perf_counter_to_ctx(uint32_t type,
749 uint64_t config,
750 const char *name,
751 struct lttng_kernel_ctx **ctx);
752int lttng_cpuhp_perf_counter_online(unsigned int cpu,
753 struct lttng_cpuhp_node *node);
754int lttng_cpuhp_perf_counter_dead(unsigned int cpu,
755 struct lttng_cpuhp_node *node);
756#else
757static inline
758int lttng_add_perf_counter_to_ctx(uint32_t type,
759 uint64_t config,
760 const char *name,
761 struct lttng_kernel_ctx **ctx)
762{
763 return -ENOSYS;
764}
765static inline
766int lttng_cpuhp_perf_counter_online(unsigned int cpu,
767 struct lttng_cpuhp_node *node)
768{
769 return 0;
770}
771static inline
772int lttng_cpuhp_perf_counter_dead(unsigned int cpu,
773 struct lttng_cpuhp_node *node)
774{
775 return 0;
776}
777#endif
778
311e655a
MD		 779struct lttng_event_enabler *lttng_event_enabler_create(
780 enum lttng_enabler_format_type format_type,
781 struct lttng_kernel_abi_event *event_param,
f7d06400 782 struct lttng_kernel_channel_buffer *chan);
def1e304
MD		 783void lttng_event_enabler_session_add(struct lttng_kernel_session *session,
784 struct lttng_event_enabler *event_enabler);
785void lttng_event_enabler_destroy(struct lttng_event_enabler *event_enabler);
311e655a
MD		 786
787int lttng_event_enabler_enable(struct lttng_event_enabler *event_enabler);
788int lttng_event_enabler_disable(struct lttng_event_enabler *event_enabler);
789struct lttng_event_notifier_enabler *lttng_event_notifier_enabler_create(
790 struct lttng_event_notifier_group *event_notifier_group,
791 enum lttng_enabler_format_type format_type,
792 struct lttng_kernel_abi_event_notifier *event_notifier_param);
793
794int lttng_event_notifier_enabler_enable(
795 struct lttng_event_notifier_enabler *event_notifier_enabler);
796int lttng_event_notifier_enabler_disable(
797 struct lttng_event_notifier_enabler *event_notifier_enabler);
798
799int lttng_event_enabler_attach_filter_bytecode(struct lttng_event_enabler *event_enabler,
800 struct lttng_kernel_abi_filter_bytecode __user *bytecode);
801int lttng_event_notifier_enabler_attach_filter_bytecode(
802 struct lttng_event_notifier_enabler *event_notifier_enabler,
803 struct lttng_kernel_abi_filter_bytecode __user *bytecode);
804int lttng_event_notifier_enabler_attach_capture_bytecode(
805 struct lttng_event_notifier_enabler *event_notifier_enabler,
806 struct lttng_kernel_abi_capture_bytecode __user *bytecode);
807
808int lttng_desc_match_enabler(const struct lttng_kernel_event_desc *desc,
809 struct lttng_enabler *enabler);
810
811void lttng_enabler_link_bytecode(const struct lttng_kernel_event_desc *event_desc,
812 struct lttng_kernel_ctx *ctx,
813 struct list_head *instance_bytecode_runtime_head,
814 struct list_head *enabler_bytecode_runtime_head);
815
816#if defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS)
817int lttng_syscalls_register_event(struct lttng_event_enabler *event_enabler);
f7d06400
MD		 818int lttng_syscalls_unregister_channel(struct lttng_kernel_channel_buffer *chan);
819int lttng_syscalls_destroy_event(struct lttng_kernel_channel_buffer *chan);
311e655a 820int lttng_syscall_filter_enable_event(
f7d06400 821 struct lttng_kernel_channel_buffer *chan,
311e655a
MD		 822 struct lttng_kernel_event_recorder *event);
823int lttng_syscall_filter_disable_event(
f7d06400 824 struct lttng_kernel_channel_buffer *chan,
311e655a
MD		 825 struct lttng_kernel_event_recorder *event);
826
f7d06400 827long lttng_channel_syscall_mask(struct lttng_kernel_channel_buffer *channel,
311e655a
MD		 828 struct lttng_kernel_abi_syscall_mask __user *usyscall_mask);
829
830int lttng_syscalls_register_event_notifier(
831 struct lttng_event_notifier_enabler *event_notifier_enabler);
832int lttng_syscalls_create_matching_event_notifiers(
833 struct lttng_event_notifier_enabler *event_notifier_enabler);
834int lttng_syscalls_unregister_event_notifier_group(struct lttng_event_notifier_group *group);
835int lttng_syscall_filter_enable_event_notifier(struct lttng_kernel_event_notifier *event_notifier);
836int lttng_syscall_filter_disable_event_notifier(struct lttng_kernel_event_notifier *event_notifier);
837#else
838static inline int lttng_syscalls_register_event(
839 struct lttng_event_enabler *event_enabler)
840{
841 return -ENOSYS;
842}
843
f7d06400 844static inline int lttng_syscalls_unregister_channel(struct lttng_kernel_channel_buffer *chan)
311e655a
MD		 845{
846 return 0;
847}
848
f7d06400 849static inline int lttng_syscalls_destroy(struct lttng_kernel_channel_buffer *chan)
311e655a
MD		 850{
851 return 0;
852}
853
f7d06400 854static inline int lttng_syscall_filter_enable_event(struct lttng_kernel_channel_buffer *chan,
311e655a
MD		 855 struct lttng_kernel_event_recorder *event);
856{
857 return -ENOSYS;
858}
859
f7d06400 860static inline int lttng_syscall_filter_disable_event(struct lttng_kernel_channel_buffer *chan,
311e655a
MD		 861 struct lttng_kernel_event_recorder *event);
862{
863 return -ENOSYS;
864}
865
f7d06400 866static inline long lttng_channel_syscall_mask(struct lttng_kernel_channel_buffer *channel,
311e655a
MD		 867 struct lttng_kernel_syscall_mask __user *usyscall_mask)
868{
869 return -ENOSYS;
870}
871
872static inline int lttng_syscalls_register_event_notifier(
873 struct lttng_event_notifier_group *group)
874{
875 return -ENOSYS;
876}
877
878static inline int lttng_syscalls_unregister_event_notifier_group(
879 struct lttng_event_notifier_group *group)
880{
881 return 0;
882}
883
884static inline int lttng_syscall_filter_enable_event_notifier(
885 struct lttng_event_notifier_group *group,
886 const char *name)
887{
888 return -ENOSYS;
889}
890
891static inline int lttng_syscall_filter_disable_event_notifier(
892 struct lttng_event_notifier_group *group,
893 const char *name)
894{
895 return -ENOSYS;
896}
0fe45627 897
311e655a 898#endif
0fe45627 899
e4a26d6b
MD		 900#ifdef CONFIG_KPROBES
901int lttng_kprobes_register_event(const char *name,
902 const char *symbol_name,
903 uint64_t offset,
904 uint64_t addr,
905 struct lttng_kernel_event_recorder *event);
906void lttng_kprobes_unregister_event(struct lttng_kernel_event_recorder *event);
907void lttng_kprobes_destroy_event_private(struct lttng_kernel_event_recorder *event);
908int lttng_kprobes_register_event_notifier(const char *symbol_name,
909 uint64_t offset,
910 uint64_t addr,
911 struct lttng_kernel_event_notifier *event_notifier);
912void lttng_kprobes_unregister_event_notifier(struct lttng_kernel_event_notifier *event_notifier);
913void lttng_kprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier *event_notifier);
914#else
915static inline
916int lttng_kprobes_register_event(const char *name,
917 const char *symbol_name,
918 uint64_t offset,
919 uint64_t addr,
920 struct lttng_kernel_event_recorder *event)
921{
922 return -ENOSYS;
923}
924
925static inline
926void lttng_kprobes_unregister_event(struct lttng_kernel_event_recorder *event)
927{
928}
929
930static inline
931void lttng_kprobes_destroy_event_private(struct lttng_kernel_event_recorder *event)
932{
933}
934
935static inline
936int lttng_kprobes_register_event_notifier(const char *symbol_name,
937 uint64_t offset,
938 uint64_t addr,
939 struct lttng_kernel_event_notifier *event_notifier)
940{
941 return -ENOSYS;
942}
943
944static inline
945void lttng_kprobes_unregister_event_notifier(struct lttng_kernel_event_notifier *event_notifier)
946{
947}
948
949static inline
950void lttng_kprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier *event_notifier)
951{
952}
953#endif
954
955int lttng_event_add_callsite(struct lttng_kernel_event_common *event,
956 struct lttng_kernel_abi_event_callsite __user *callsite);
957
958#ifdef CONFIG_UPROBES
959int lttng_uprobes_register_event(const char *name,
960 int fd, struct lttng_kernel_event_recorder *event);
961int lttng_uprobes_event_add_callsite(struct lttng_kernel_event_common *event,
962 struct lttng_kernel_abi_event_callsite __user *callsite);
963void lttng_uprobes_unregister_event(struct lttng_kernel_event_recorder *event);
964void lttng_uprobes_destroy_event_private(struct lttng_kernel_event_recorder *event);
965int lttng_uprobes_register_event_notifier(const char *name,
966 int fd, struct lttng_kernel_event_notifier *event_notifier);
967void lttng_uprobes_unregister_event_notifier(struct lttng_kernel_event_notifier *event_notifier);
968void lttng_uprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier *event_notifier);
969#else
970static inline
971int lttng_uprobes_register_event(const char *name,
972 int fd, struct lttng_kernel_event_recorder *event)
973{
974 return -ENOSYS;
975}
976
977static inline
978int lttng_uprobes_event_add_callsite(struct lttng_kernel_event_common *event,
979 struct lttng_kernel_abi_event_callsite __user *callsite)
980{
981 return -ENOSYS;
982}
983
984static inline
985void lttng_uprobes_unregister_event(struct lttng_kernel_event_recorder *event)
986{
987}
988
989static inline
990void lttng_uprobes_destroy_event_private(struct lttng_kernel_event_recorder *event)
991{
992}
993
994static inline
995int lttng_uprobes_register_event_notifier(const char *name,
996 int fd, struct lttng_kernel_event_notifier *event_notifier)
997{
998 return -ENOSYS;
999}
1000
1001static inline
1002void lttng_uprobes_unregister_event_notifier(struct lttng_kernel_event_notifier *event_notifier)
1003{
1004}
1005
1006static inline
1007void lttng_uprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier *event_notifier)
1008{
1009}
1010#endif
1011
1012#ifdef CONFIG_KRETPROBES
1013int lttng_kretprobes_register(const char *name,
1014 const char *symbol_name,
1015 uint64_t offset,
1016 uint64_t addr,
1017 struct lttng_kernel_event_recorder *event_entry,
1018 struct lttng_kernel_event_recorder *event_exit);
1019void lttng_kretprobes_unregister(struct lttng_kernel_event_recorder *event);
1020void lttng_kretprobes_destroy_private(struct lttng_kernel_event_recorder *event);
1021int lttng_kretprobes_event_enable_state(struct lttng_kernel_event_common *event,
1022 int enable);
1023#else
1024static inline
1025int lttng_kretprobes_register(const char *name,
1026 const char *symbol_name,
1027 uint64_t offset,
1028 uint64_t addr,
1029 struct lttng_kernel_event_recorder *event_entry,
1030 struct lttng_kernel_event_recorder *event_exit)
1031{
1032 return -ENOSYS;
1033}
1034
1035static inline
1036void lttng_kretprobes_unregister(struct lttng_kernel_event_recorder *event)
1037{
1038}
1039
1040static inline
1041void lttng_kretprobes_destroy_private(struct lttng_kernel_event_recorder *event)
1042{
1043}
1044
1045static inline
1046int lttng_kretprobes_event_enable_state(struct lttng_kernel_event_common *event,
1047 int enable)
1048{
1049 return -ENOSYS;
1050}
1051#endif
1052
e8c0bbd3
MD		 1053void lttng_lock_sessions(void);
1054void lttng_unlock_sessions(void);
1055
1056struct list_head *lttng_get_probe_list_head(void);
1057
1058int lttng_fix_pending_events(void);
1059int lttng_fix_pending_event_notifiers(void);
1060int lttng_session_active(void);
1061bool lttng_event_notifier_active(void);
1062
8cdc1a81
MD		 1063struct lttng_kernel_session *lttng_session_create(void);
1064int lttng_session_enable(struct lttng_kernel_session *session);
1065int lttng_session_disable(struct lttng_kernel_session *session);
1066void lttng_session_destroy(struct lttng_kernel_session *session);
1067int lttng_session_metadata_regenerate(struct lttng_kernel_session *session);
1068int lttng_session_statedump(struct lttng_kernel_session *session);
e8c0bbd3
MD		 1069void metadata_cache_destroy(struct kref *kref);
1070
1071struct lttng_counter *lttng_kernel_counter_create(
1072 const char *counter_transport_name, size_t number_dimensions,
1073 const size_t *dimensions_sizes);
1074int lttng_kernel_counter_read(struct lttng_counter *counter,
1075 const size_t *dimension_indexes, int32_t cpu,
1076 int64_t *val, bool *overflow, bool *underflow);
1077int lttng_kernel_counter_aggregate(struct lttng_counter *counter,
1078 const size_t *dimension_indexes, int64_t *val,
1079 bool *overflow, bool *underflow);
1080int lttng_kernel_counter_clear(struct lttng_counter *counter,
1081 const size_t *dimension_indexes);
1082struct lttng_event_notifier_group *lttng_event_notifier_group_create(void);
1083int lttng_event_notifier_group_create_error_counter(
1084 struct file *event_notifier_group_file,
1085 const struct lttng_kernel_abi_counter_conf *error_counter_conf);
1086void lttng_event_notifier_group_destroy(
1087 struct lttng_event_notifier_group *event_notifier_group);
1088
f7d06400 1089struct lttng_kernel_channel_buffer *lttng_channel_create(struct lttng_kernel_session *session,
e8c0bbd3
MD		 1090 const char *transport_name,
1091 void *buf_addr,
1092 size_t subbuf_size, size_t num_subbuf,
1093 unsigned int switch_timer_interval,
1094 unsigned int read_timer_interval,
1095 enum channel_type channel_type);
f7d06400 1096struct lttng_kernel_channel_buffer *lttng_global_channel_create(struct lttng_kernel_session *session,
e8c0bbd3
MD		 1097 int overwrite, void *buf_addr,
1098 size_t subbuf_size, size_t num_subbuf,
1099 unsigned int switch_timer_interval,
1100 unsigned int read_timer_interval);
1101
f7d06400 1102void lttng_metadata_channel_destroy(struct lttng_kernel_channel_buffer *chan);
def1e304
MD		 1103struct lttng_kernel_event_recorder *lttng_kernel_event_recorder_create(struct lttng_event_enabler *event_enabler,
1104 const struct lttng_kernel_event_desc *event_desc);
1105struct lttng_kernel_event_recorder *_lttng_kernel_event_recorder_create(struct lttng_event_enabler *event_enabler,
1106 const struct lttng_kernel_event_desc *event_desc);
f7d06400 1107struct lttng_kernel_event_recorder *lttng_event_compat_old_create(struct lttng_kernel_channel_buffer *chan,
e8c0bbd3
MD		 1108 struct lttng_kernel_abi_old_event *old_event_param,
1109 const struct lttng_kernel_event_desc *internal_desc);
1110
1111struct lttng_kernel_event_notifier *lttng_event_notifier_create(
1112 const struct lttng_kernel_event_desc *event_notifier_desc,
1113 uint64_t id,
1114 uint64_t error_counter_idx,
1115 struct lttng_event_notifier_group *event_notifier_group,
1116 struct lttng_kernel_abi_event_notifier *event_notifier_param,
1117 enum lttng_kernel_abi_instrumentation itype);
1118struct lttng_kernel_event_notifier *_lttng_event_notifier_create(
1119 const struct lttng_kernel_event_desc *event_notifier_desc,
1120 uint64_t id,
1121 uint64_t error_counter_idx,
1122 struct lttng_event_notifier_group *event_notifier_group,
1123 struct lttng_kernel_abi_event_notifier *event_notifier_param,
1124 enum lttng_kernel_abi_instrumentation itype);
1125
f7d06400
MD		 1126int lttng_channel_enable(struct lttng_kernel_channel_buffer *channel);
1127int lttng_channel_disable(struct lttng_kernel_channel_buffer *channel);
e8c0bbd3
MD		 1128int lttng_event_enable(struct lttng_kernel_event_common *event);
1129int lttng_event_disable(struct lttng_kernel_event_common *event);
1130
1131void lttng_transport_register(struct lttng_transport *transport);
1132void lttng_transport_unregister(struct lttng_transport *transport);
1133
1134void lttng_counter_transport_register(struct lttng_counter_transport *transport);
1135void lttng_counter_transport_unregister(struct lttng_counter_transport *transport);
1136
1137void synchronize_trace(void);
1138int lttng_abi_init(void);
1139int lttng_abi_compat_old_init(void);
1140void lttng_abi_exit(void);
1141void lttng_abi_compat_old_exit(void);
1142
1143const struct lttng_kernel_event_desc *lttng_event_desc_get(const char *name);
1144void lttng_event_desc_put(const struct lttng_kernel_event_desc *desc);
1145int lttng_probes_init(void);
1146void lttng_probes_exit(void);
1147
1148int lttng_metadata_output_channel(struct lttng_metadata_stream *stream,
860c213b 1149 struct lttng_kernel_ring_buffer_channel *chan, bool *coherent);
e8c0bbd3
MD		 1150
1151int lttng_id_tracker_get_node_id(const struct lttng_id_hash_node *node);
8c0393c3
MD		 1152int lttng_id_tracker_empty_set(struct lttng_kernel_id_tracker *lf);
1153int lttng_id_tracker_init(struct lttng_kernel_id_tracker *lf,
1154 struct lttng_kernel_session *session,
1155 enum tracker_type type);
1156void lttng_id_tracker_fini(struct lttng_kernel_id_tracker *lf);
1157void lttng_id_tracker_destroy(struct lttng_kernel_id_tracker *lf, bool rcu);
1158int lttng_id_tracker_add(struct lttng_kernel_id_tracker *lf, int id);
1159int lttng_id_tracker_del(struct lttng_kernel_id_tracker *lf, int id);
e8c0bbd3 1160
8cdc1a81 1161int lttng_session_track_id(struct lttng_kernel_session *session,
e8c0bbd3 1162 enum tracker_type tracker_type, int id);
8cdc1a81 1163int lttng_session_untrack_id(struct lttng_kernel_session *session,
e8c0bbd3
MD		 1164 enum tracker_type tracker_type, int id);
1165
8cdc1a81 1166int lttng_session_list_tracker_ids(struct lttng_kernel_session *session,
e8c0bbd3
MD		 1167 enum tracker_type tracker_type);
1168
1169void lttng_clock_ref(void);
1170void lttng_clock_unref(void);
1171
1172void lttng_free_event_filter_runtime(struct lttng_kernel_event_common *event);
1173
1174int lttng_probes_init(void);
1175
1176int lttng_logger_init(void);
1177void lttng_logger_exit(void);
1178
8cdc1a81 1179extern int lttng_statedump_start(struct lttng_kernel_session *session);
e8c0bbd3
MD		 1180
1181int lttng_calibrate(struct lttng_kernel_abi_calibrate *calibrate);
1182
1183extern const struct file_operations lttng_tracepoint_list_fops;
1184extern const struct file_operations lttng_syscall_list_fops;
1185
0fe45627
MD		 1186#define lttng_kernel_static_ctx_field(_event_field, _get_size, _record, _get_value, _destroy, _priv) \
1187 __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_ctx_field, { \
1188 .event_field = (_event_field), \
1189 .get_size = (_get_size), \
1190 .record = (_record), \
1191 .get_value = (_get_value), \
1192 .destroy = (_destroy), \
1193 .priv = (_priv), \
1194 })
1195
92bc1e23 1196#endif /* _LTTNG_EVENTS_INTERNAL_H */
LTTng 2.0/0.x modules
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