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Refactoring: uprobes: combine common code between recorder and notifier
[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 */
8d554755 36 struct lttng_event_enabler_common *ref; /* backward ref */
311e655a
MD		 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
0bb716a8 122struct 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		 148struct 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		 157struct 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		 174enum lttng_kernel_bytecode_interpreter_ret {
175 LTTNG_KERNEL_BYTECODE_INTERPRETER_ERROR = -1,
176 LTTNG_KERNEL_BYTECODE_INTERPRETER_OK = 0,
177};
178
179enum lttng_kernel_bytecode_filter_result {
180 LTTNG_KERNEL_BYTECODE_FILTER_ACCEPT = 0,
181 LTTNG_KERNEL_BYTECODE_FILTER_REJECT = 1,
182};
183
184struct lttng_kernel_bytecode_filter_ctx {
185 enum lttng_kernel_bytecode_filter_result result;
186};
187
1efb0502
MD		 188struct lttng_interpreter_output;
189
190enum lttng_kernel_bytecode_type {
191 LTTNG_KERNEL_BYTECODE_TYPE_FILTER,
192 LTTNG_KERNEL_BYTECODE_TYPE_CAPTURE,
193};
194
0bb716a8
MD		 195enum lttng_kernel_event_enabler_type {
196 LTTNG_EVENT_ENABLER_TYPE_RECORDER,
197 LTTNG_EVENT_ENABLER_TYPE_NOTIFIER,
198};
199
1efb0502
MD		 200struct 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
212struct 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 229struct 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 242struct 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
249struct 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		 260struct 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 */
272struct 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
286struct 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
299struct 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		 306struct 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		 318struct 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		 331struct 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		 383struct 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
405struct 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
9190fb56
MD		 413#define LTTNG_EVENT_NOTIFIER_HT_BITS 12
414#define LTTNG_EVENT_NOTIFIER_HT_SIZE (1U << LTTNG_EVENT_NOTIFIER_HT_BITS)
415
416struct lttng_event_notifier_ht {
417 struct hlist_head table[LTTNG_EVENT_NOTIFIER_HT_SIZE];
418};
419
b0315544
MD		 420struct 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 */
426 struct lttng_event_notifier_ht event_notifiers_ht; /* Hash table of event notifiers */
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
440struct lttng_transport {
441 char *name;
442 struct module *owner;
443 struct list_head node;
444 struct lttng_kernel_channel_buffer_ops ops;
445};
446
447struct lttng_counter_transport {
448 char *name;
449 struct module *owner;
450 struct list_head node;
451 struct lttng_counter_ops ops;
452};
453
9190fb56
MD		 454#define LTTNG_EVENT_HT_BITS 12
455#define LTTNG_EVENT_HT_SIZE (1U << LTTNG_EVENT_HT_BITS)
456
457struct lttng_event_ht {
458 struct hlist_head table[LTTNG_EVENT_HT_SIZE];
459};
460
8cdc1a81
MD		 461struct lttng_kernel_session_private {
462 struct lttng_kernel_session *pub; /* Public session interface */
463
464 int been_active; /* Has trace session been active ? */
465 struct file *file; /* File associated to session */
466 struct list_head chan; /* Channel list head */
467 struct list_head events; /* Event list head */
468 struct list_head list; /* Session list */
469 unsigned int free_chan_id; /* Next chan ID to allocate */
470 uuid_le uuid; /* Trace session unique ID */
471 struct lttng_metadata_cache *metadata_cache;
472 unsigned int metadata_dumped:1,
473 tstate:1; /* Transient enable state */
474 /* List of event enablers */
475 struct list_head enablers_head;
476 /* Hash table of events */
477 struct lttng_event_ht events_ht;
478 char name[LTTNG_KERNEL_ABI_SESSION_NAME_LEN];
479 char creation_time[LTTNG_KERNEL_ABI_SESSION_CREATION_TIME_ISO8601_LEN];
480};
481
fc66bf6a
MD		 482struct lttng_id_hash_node {
483 struct hlist_node hlist;
484 int id;
485};
486
8c0393c3
MD		 487enum tracker_type {
488 TRACKER_PID,
489 TRACKER_VPID,
490 TRACKER_UID,
491 TRACKER_VUID,
492 TRACKER_GID,
493 TRACKER_VGID,
494
495 TRACKER_UNKNOWN,
496};
497
498struct lttng_kernel_id_tracker_private {
499 struct lttng_kernel_id_tracker *pub; /* Public interface */
500
501 struct lttng_kernel_session *session;
502 enum tracker_type tracker_type;
503};
504
0fe45627
MD		 505extern struct lttng_kernel_ctx *lttng_static_ctx;
506
437d5aa5
MD		 507static inline
508const struct lttng_kernel_type_integer *lttng_kernel_get_type_integer(const struct lttng_kernel_type_common *type)
509{
510 if (type->type != lttng_kernel_type_integer)
511 return NULL;
512 return container_of(type, const struct lttng_kernel_type_integer, parent);
513}
514
515static inline
516const struct lttng_kernel_type_string *lttng_kernel_get_type_string(const struct lttng_kernel_type_common *type)
517{
518 if (type->type != lttng_kernel_type_string)
519 return NULL;
520 return container_of(type, const struct lttng_kernel_type_string, parent);
521}
522
523static inline
524const struct lttng_kernel_type_enum *lttng_kernel_get_type_enum(const struct lttng_kernel_type_common *type)
525{
526 if (type->type != lttng_kernel_type_enum)
527 return NULL;
528 return container_of(type, const struct lttng_kernel_type_enum, parent);
529}
530
531static inline
532const struct lttng_kernel_type_array *lttng_kernel_get_type_array(const struct lttng_kernel_type_common *type)
533{
534 if (type->type != lttng_kernel_type_array)
535 return NULL;
536 return container_of(type, const struct lttng_kernel_type_array, parent);
537}
538
539static inline
540const struct lttng_kernel_type_sequence *lttng_kernel_get_type_sequence(const struct lttng_kernel_type_common *type)
541{
542 if (type->type != lttng_kernel_type_sequence)
543 return NULL;
544 return container_of(type, const struct lttng_kernel_type_sequence, parent);
545}
546
547static inline
548const struct lttng_kernel_type_struct *lttng_kernel_get_type_struct(const struct lttng_kernel_type_common *type)
549{
550 if (type->type != lttng_kernel_type_struct)
551 return NULL;
552 return container_of(type, const struct lttng_kernel_type_struct, parent);
553}
554
555static inline
556const struct lttng_kernel_type_variant *lttng_kernel_get_type_variant(const struct lttng_kernel_type_common *type)
557{
558 if (type->type != lttng_kernel_type_variant)
559 return NULL;
560 return container_of(type, const struct lttng_kernel_type_variant, parent);
561}
562
563static inline bool lttng_kernel_type_is_bytewise_integer(const struct lttng_kernel_type_common *type)
564{
565 const struct lttng_kernel_type_integer *type_integer = lttng_kernel_get_type_integer(type);
566
567 if (!type_integer)
568 return false;
569 switch (type_integer->size) {
c190d76e
MJ		 570 case 8:
571 lttng_fallthrough;
572 case 16:
573 lttng_fallthrough;
574 case 32:
575 lttng_fallthrough;
437d5aa5
MD		 576 case 64:
577 break;
578 default:
579 return false;
580 }
581 return true;
582}
583
8a445457
MD		 584int lttng_kernel_interpret_event_filter(const struct lttng_kernel_event_common *event,
585 const char *interpreter_stack_data,
a92e844e 586 struct lttng_kernel_probe_ctx *probe_ctx,
8a445457
MD		 587 void *event_filter_ctx);
588
5e08a34f 589static inline
1ae083ba
MD		 590struct lttng_event_enabler_common *lttng_event_recorder_enabler_as_enabler(
591 struct lttng_event_recorder_enabler *event_recorder_enabler)
5e08a34f 592{
1ae083ba 593 return &event_recorder_enabler->parent;
5e08a34f
MD		 594}
595
596static inline
8d554755 597struct lttng_event_enabler_common *lttng_event_notifier_enabler_as_enabler(
5e08a34f
MD		 598 struct lttng_event_notifier_enabler *event_notifier_enabler)
599{
5b9817ae 600 return &event_notifier_enabler->parent;
5e08a34f
MD		 601}
602
0fe45627
MD		 603int lttng_context_init(void);
604void lttng_context_exit(void);
605int lttng_kernel_context_append(struct lttng_kernel_ctx **ctx_p,
606 const struct lttng_kernel_ctx_field *f);
607void lttng_kernel_context_remove_last(struct lttng_kernel_ctx **ctx_p);
608struct lttng_kernel_ctx_field *lttng_kernel_get_context_field_from_index(struct lttng_kernel_ctx *ctx,
609 size_t index);
610int lttng_kernel_find_context(struct lttng_kernel_ctx *ctx, const char *name);
611int lttng_kernel_get_context_index(struct lttng_kernel_ctx *ctx, const char *name);
612void lttng_kernel_destroy_context(struct lttng_kernel_ctx *ctx);
613int lttng_add_pid_to_ctx(struct lttng_kernel_ctx **ctx);
614int lttng_add_cpu_id_to_ctx(struct lttng_kernel_ctx **ctx);
615int lttng_add_procname_to_ctx(struct lttng_kernel_ctx **ctx);
616int lttng_add_prio_to_ctx(struct lttng_kernel_ctx **ctx);
617int lttng_add_nice_to_ctx(struct lttng_kernel_ctx **ctx);
618int lttng_add_vpid_to_ctx(struct lttng_kernel_ctx **ctx);
619int lttng_add_tid_to_ctx(struct lttng_kernel_ctx **ctx);
620int lttng_add_vtid_to_ctx(struct lttng_kernel_ctx **ctx);
621int lttng_add_ppid_to_ctx(struct lttng_kernel_ctx **ctx);
622int lttng_add_vppid_to_ctx(struct lttng_kernel_ctx **ctx);
623int lttng_add_hostname_to_ctx(struct lttng_kernel_ctx **ctx);
624int lttng_add_interruptible_to_ctx(struct lttng_kernel_ctx **ctx);
625int lttng_add_need_reschedule_to_ctx(struct lttng_kernel_ctx **ctx);
626#if defined(CONFIG_PREEMPT_RT_FULL) || defined(CONFIG_PREEMPT)
627int lttng_add_preemptible_to_ctx(struct lttng_kernel_ctx **ctx);
628#else
629static inline
630int lttng_add_preemptible_to_ctx(struct lttng_kernel_ctx **ctx)
631{
632 return -ENOSYS;
633}
634#endif
635#ifdef CONFIG_PREEMPT_RT_FULL
636int lttng_add_migratable_to_ctx(struct lttng_kernel_ctx **ctx);
637#else
638static inline
639int lttng_add_migratable_to_ctx(struct lttng_kernel_ctx **ctx)
640{
641 return -ENOSYS;
642}
643#endif
644
645int lttng_add_callstack_to_ctx(struct lttng_kernel_ctx **ctx, int type);
646
647#if defined(CONFIG_CGROUPS) && \
648 ((LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,6,0)) || \
649 LTTNG_UBUNTU_KERNEL_RANGE(4,4,0,0, 4,5,0,0))
650int lttng_add_cgroup_ns_to_ctx(struct lttng_kernel_ctx **ctx);
651#else
652static inline
653int lttng_add_cgroup_ns_to_ctx(struct lttng_kernel_ctx **ctx)
654{
655 return -ENOSYS;
656}
657#endif
658
659#if defined(CONFIG_IPC_NS) && \
660 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
661int lttng_add_ipc_ns_to_ctx(struct lttng_kernel_ctx **ctx);
662#else
663static inline
664int lttng_add_ipc_ns_to_ctx(struct lttng_kernel_ctx **ctx)
665{
666 return -ENOSYS;
667}
668#endif
669
670#if !defined(LTTNG_MNT_NS_MISSING_HEADER) && \
671 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
672int lttng_add_mnt_ns_to_ctx(struct lttng_kernel_ctx **ctx);
673#else
674static inline
675int lttng_add_mnt_ns_to_ctx(struct lttng_kernel_ctx **ctx)
676{
677 return -ENOSYS;
678}
679#endif
680
681#if defined(CONFIG_NET_NS) && \
682 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
683int lttng_add_net_ns_to_ctx(struct lttng_kernel_ctx **ctx);
684#else
685static inline
686int lttng_add_net_ns_to_ctx(struct lttng_kernel_ctx **ctx)
687{
688 return -ENOSYS;
689}
690#endif
691
692#if defined(CONFIG_PID_NS) && \
693 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
694int lttng_add_pid_ns_to_ctx(struct lttng_kernel_ctx **ctx);
695#else
696static inline
697int lttng_add_pid_ns_to_ctx(struct lttng_kernel_ctx **ctx)
698{
699 return -ENOSYS;
700}
701#endif
702
703#if defined(CONFIG_USER_NS) && \
704 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
705int lttng_add_user_ns_to_ctx(struct lttng_kernel_ctx **ctx);
706#else
707static inline
708int lttng_add_user_ns_to_ctx(struct lttng_kernel_ctx **ctx)
709{
710 return -ENOSYS;
711}
712#endif
713
714#if defined(CONFIG_UTS_NS) && \
715 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
716int lttng_add_uts_ns_to_ctx(struct lttng_kernel_ctx **ctx);
717#else
718static inline
719int lttng_add_uts_ns_to_ctx(struct lttng_kernel_ctx **ctx)
720{
721 return -ENOSYS;
722}
723#endif
724
725#if defined(CONFIG_TIME_NS) && \
fce87a6e
MJ		 726 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,6,0) || \
727 LTTNG_RHEL_KERNEL_RANGE(4,18,0,305,0,0, 4,19,0,0,0,0))
0fe45627
MD		 728int lttng_add_time_ns_to_ctx(struct lttng_kernel_ctx **ctx);
729#else
730static inline
731int lttng_add_time_ns_to_ctx(struct lttng_kernel_ctx **ctx)
732{
733 return -ENOSYS;
734}
735#endif
736
737int lttng_add_uid_to_ctx(struct lttng_kernel_ctx **ctx);
738int lttng_add_euid_to_ctx(struct lttng_kernel_ctx **ctx);
739int lttng_add_suid_to_ctx(struct lttng_kernel_ctx **ctx);
740int lttng_add_gid_to_ctx(struct lttng_kernel_ctx **ctx);
741int lttng_add_egid_to_ctx(struct lttng_kernel_ctx **ctx);
742int lttng_add_sgid_to_ctx(struct lttng_kernel_ctx **ctx);
743int lttng_add_vuid_to_ctx(struct lttng_kernel_ctx **ctx);
744int lttng_add_veuid_to_ctx(struct lttng_kernel_ctx **ctx);
745int lttng_add_vsuid_to_ctx(struct lttng_kernel_ctx **ctx);
746int lttng_add_vgid_to_ctx(struct lttng_kernel_ctx **ctx);
747int lttng_add_vegid_to_ctx(struct lttng_kernel_ctx **ctx);
748int lttng_add_vsgid_to_ctx(struct lttng_kernel_ctx **ctx);
749
750#if defined(CONFIG_PERF_EVENTS)
751int lttng_add_perf_counter_to_ctx(uint32_t type,
752 uint64_t config,
753 const char *name,
754 struct lttng_kernel_ctx **ctx);
755int lttng_cpuhp_perf_counter_online(unsigned int cpu,
756 struct lttng_cpuhp_node *node);
757int lttng_cpuhp_perf_counter_dead(unsigned int cpu,
758 struct lttng_cpuhp_node *node);
759#else
760static inline
761int lttng_add_perf_counter_to_ctx(uint32_t type,
762 uint64_t config,
763 const char *name,
764 struct lttng_kernel_ctx **ctx)
765{
766 return -ENOSYS;
767}
768static inline
769int lttng_cpuhp_perf_counter_online(unsigned int cpu,
770 struct lttng_cpuhp_node *node)
771{
772 return 0;
773}
774static inline
775int lttng_cpuhp_perf_counter_dead(unsigned int cpu,
776 struct lttng_cpuhp_node *node)
777{
778 return 0;
779}
780#endif
781
1ae083ba 782struct lttng_event_recorder_enabler *lttng_event_recorder_enabler_create(
311e655a
MD		 783 enum lttng_enabler_format_type format_type,
784 struct lttng_kernel_abi_event *event_param,
f7d06400 785 struct lttng_kernel_channel_buffer *chan);
def1e304 786void lttng_event_enabler_session_add(struct lttng_kernel_session *session,
1ae083ba 787 struct lttng_event_recorder_enabler *event_enabler);
7b25ab0e 788
311e655a
MD		 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);
311e655a
MD		 793int lttng_event_notifier_enabler_attach_capture_bytecode(
794 struct lttng_event_notifier_enabler *event_notifier_enabler,
795 struct lttng_kernel_abi_capture_bytecode __user *bytecode);
796
44b1abdc
MD		 797int lttng_event_enabler_enable(struct lttng_event_enabler_common *event_enabler);
798int lttng_event_enabler_disable(struct lttng_event_enabler_common *event_enabler);
799int lttng_event_enabler_attach_filter_bytecode(struct lttng_event_enabler_common *event_enabler,
800 struct lttng_kernel_abi_filter_bytecode __user *bytecode);
801void lttng_event_enabler_destroy(struct lttng_event_enabler_common *event_enabler);
802
311e655a 803int lttng_desc_match_enabler(const struct lttng_kernel_event_desc *desc,
8d554755 804 struct lttng_event_enabler_common *enabler);
311e655a
MD		 805
806void lttng_enabler_link_bytecode(const struct lttng_kernel_event_desc *event_desc,
807 struct lttng_kernel_ctx *ctx,
808 struct list_head *instance_bytecode_runtime_head,
809 struct list_head *enabler_bytecode_runtime_head);
810
811#if defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS)
d26015f6 812int lttng_syscalls_register_event(struct lttng_event_enabler_common *event_enabler);
9b2f1c54
MD		 813int lttng_syscall_filter_enable_event(struct lttng_kernel_event_common *event);
814int lttng_syscall_filter_disable_event(struct lttng_kernel_event_common *event);
311e655a 815
6053e75e
MD		 816int lttng_syscalls_unregister_syscall_table(struct lttng_kernel_syscall_table *syscall_table);
817int lttng_syscalls_destroy_syscall_table(struct lttng_kernel_syscall_table *syscall_table);
818
f7d06400 819long lttng_channel_syscall_mask(struct lttng_kernel_channel_buffer *channel,
311e655a
MD		 820 struct lttng_kernel_abi_syscall_mask __user *usyscall_mask);
821
311e655a
MD		 822int lttng_syscalls_create_matching_event_notifiers(
823 struct lttng_event_notifier_enabler *event_notifier_enabler);
311e655a 824#else
d26015f6 825static inline int lttng_syscalls_register_event(struct lttng_event_enabler_common *event_enabler)
311e655a
MD		 826{
827 return -ENOSYS;
828}
829
9b2f1c54 830static inline int lttng_syscall_filter_enable_event(struct lttng_kernel_event_common *event)
311e655a 831{
6053e75e 832 return -ENOSYS;
311e655a
MD		 833}
834
9b2f1c54 835static inline int lttng_syscall_filter_disable_event(struct lttng_kernel_event_common *event)
311e655a 836{
6053e75e 837 return -ENOSYS;
311e655a
MD		 838}
839
6053e75e 840static inline int lttng_syscalls_unregister_syscall_table(struct lttng_kernel_syscall_table *syscall_table)
311e655a 841{
6053e75e 842 return 0;
311e655a
MD		 843}
844
6053e75e 845static inline int lttng_syscalls_destroy_syscall_table(struct lttng_kernel_syscall_table *syscall_table)
311e655a 846{
6053e75e 847 return 0;
311e655a
MD		 848}
849
f7d06400 850static inline long lttng_channel_syscall_mask(struct lttng_kernel_channel_buffer *channel,
311e655a
MD		 851 struct lttng_kernel_syscall_mask __user *usyscall_mask)
852{
853 return -ENOSYS;
854}
855
6053e75e 856static inline int lttng_syscalls_create_matching_event_notifiers(struct lttng_event_notifier_enabler *event_notifier_enabler)
311e655a 857{
6053e75e 858 return -ENOSYS;
311e655a
MD		 859}
860
311e655a 861#endif
0fe45627 862
e4a26d6b
MD		 863#ifdef CONFIG_KPROBES
864int lttng_kprobes_register_event(const char *name,
865 const char *symbol_name,
866 uint64_t offset,
867 uint64_t addr,
868 struct lttng_kernel_event_recorder *event);
869void lttng_kprobes_unregister_event(struct lttng_kernel_event_recorder *event);
870void lttng_kprobes_destroy_event_private(struct lttng_kernel_event_recorder *event);
871int lttng_kprobes_register_event_notifier(const char *symbol_name,
872 uint64_t offset,
873 uint64_t addr,
874 struct lttng_kernel_event_notifier *event_notifier);
875void lttng_kprobes_unregister_event_notifier(struct lttng_kernel_event_notifier *event_notifier);
876void lttng_kprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier *event_notifier);
877#else
878static inline
879int lttng_kprobes_register_event(const char *name,
880 const char *symbol_name,
881 uint64_t offset,
882 uint64_t addr,
883 struct lttng_kernel_event_recorder *event)
884{
885 return -ENOSYS;
886}
887
888static inline
889void lttng_kprobes_unregister_event(struct lttng_kernel_event_recorder *event)
890{
891}
892
893static inline
894void lttng_kprobes_destroy_event_private(struct lttng_kernel_event_recorder *event)
895{
896}
897
898static inline
899int lttng_kprobes_register_event_notifier(const char *symbol_name,
900 uint64_t offset,
901 uint64_t addr,
902 struct lttng_kernel_event_notifier *event_notifier)
903{
904 return -ENOSYS;
905}
906
907static inline
908void lttng_kprobes_unregister_event_notifier(struct lttng_kernel_event_notifier *event_notifier)
909{
910}
911
912static inline
913void lttng_kprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier *event_notifier)
914{
915}
916#endif
917
918int lttng_event_add_callsite(struct lttng_kernel_event_common *event,
919 struct lttng_kernel_abi_event_callsite __user *callsite);
920
921#ifdef CONFIG_UPROBES
922int lttng_uprobes_register_event(const char *name,
17806c46 923 int fd, struct lttng_kernel_event_common *event);
e4a26d6b
MD		 924int lttng_uprobes_event_add_callsite(struct lttng_kernel_event_common *event,
925 struct lttng_kernel_abi_event_callsite __user *callsite);
17806c46
MD		 926void lttng_uprobes_unregister_event(struct lttng_kernel_event_common *event);
927void lttng_uprobes_destroy_event_private(struct lttng_kernel_event_common *event);
e4a26d6b
MD		 928#else
929static inline
930int lttng_uprobes_register_event(const char *name,
17806c46 931 int fd, struct lttng_kernel_event_common *event)
e4a26d6b
MD		 932{
933 return -ENOSYS;
934}
935
936static inline
937int lttng_uprobes_event_add_callsite(struct lttng_kernel_event_common *event,
938 struct lttng_kernel_abi_event_callsite __user *callsite)
939{
940 return -ENOSYS;
941}
942
943static inline
17806c46 944void lttng_uprobes_unregister_event(struct lttng_kernel_event_common *event)
e4a26d6b
MD		 945{
946}
947
948static inline
17806c46 949void lttng_uprobes_destroy_event_private(struct lttng_kernel_event_common *event)
e4a26d6b
MD		 950{
951}
952#endif
953
954#ifdef CONFIG_KRETPROBES
955int lttng_kretprobes_register(const char *name,
956 const char *symbol_name,
957 uint64_t offset,
958 uint64_t addr,
959 struct lttng_kernel_event_recorder *event_entry,
960 struct lttng_kernel_event_recorder *event_exit);
961void lttng_kretprobes_unregister(struct lttng_kernel_event_recorder *event);
962void lttng_kretprobes_destroy_private(struct lttng_kernel_event_recorder *event);
963int lttng_kretprobes_event_enable_state(struct lttng_kernel_event_common *event,
964 int enable);
965#else
966static inline
967int lttng_kretprobes_register(const char *name,
968 const char *symbol_name,
969 uint64_t offset,
970 uint64_t addr,
971 struct lttng_kernel_event_recorder *event_entry,
972 struct lttng_kernel_event_recorder *event_exit)
973{
974 return -ENOSYS;
975}
976
977static inline
978void lttng_kretprobes_unregister(struct lttng_kernel_event_recorder *event)
979{
980}
981
982static inline
983void lttng_kretprobes_destroy_private(struct lttng_kernel_event_recorder *event)
984{
985}
986
987static inline
988int lttng_kretprobes_event_enable_state(struct lttng_kernel_event_common *event,
989 int enable)
990{
991 return -ENOSYS;
992}
993#endif
994
e8c0bbd3
MD		 995void lttng_lock_sessions(void);
996void lttng_unlock_sessions(void);
997
998struct list_head *lttng_get_probe_list_head(void);
999
1000int lttng_fix_pending_events(void);
1001int lttng_fix_pending_event_notifiers(void);
1002int lttng_session_active(void);
1003bool lttng_event_notifier_active(void);
1004
8cdc1a81
MD		 1005struct lttng_kernel_session *lttng_session_create(void);
1006int lttng_session_enable(struct lttng_kernel_session *session);
1007int lttng_session_disable(struct lttng_kernel_session *session);
1008void lttng_session_destroy(struct lttng_kernel_session *session);
1009int lttng_session_metadata_regenerate(struct lttng_kernel_session *session);
1010int lttng_session_statedump(struct lttng_kernel_session *session);
e8c0bbd3
MD		 1011void metadata_cache_destroy(struct kref *kref);
1012
1013struct lttng_counter *lttng_kernel_counter_create(
1014 const char *counter_transport_name, size_t number_dimensions,
1015 const size_t *dimensions_sizes);
1016int lttng_kernel_counter_read(struct lttng_counter *counter,
1017 const size_t *dimension_indexes, int32_t cpu,
1018 int64_t *val, bool *overflow, bool *underflow);
1019int lttng_kernel_counter_aggregate(struct lttng_counter *counter,
1020 const size_t *dimension_indexes, int64_t *val,
1021 bool *overflow, bool *underflow);
1022int lttng_kernel_counter_clear(struct lttng_counter *counter,
1023 const size_t *dimension_indexes);
1024struct lttng_event_notifier_group *lttng_event_notifier_group_create(void);
1025int lttng_event_notifier_group_create_error_counter(
1026 struct file *event_notifier_group_file,
1027 const struct lttng_kernel_abi_counter_conf *error_counter_conf);
1028void lttng_event_notifier_group_destroy(
1029 struct lttng_event_notifier_group *event_notifier_group);
1030
4e252d1e 1031struct lttng_kernel_channel_buffer *lttng_channel_buffer_create(struct lttng_kernel_session *session,
e8c0bbd3
MD		 1032 const char *transport_name,
1033 void *buf_addr,
1034 size_t subbuf_size, size_t num_subbuf,
1035 unsigned int switch_timer_interval,
1036 unsigned int read_timer_interval,
1037 enum channel_type channel_type);
f7d06400 1038struct lttng_kernel_channel_buffer *lttng_global_channel_create(struct lttng_kernel_session *session,
e8c0bbd3
MD		 1039 int overwrite, void *buf_addr,
1040 size_t subbuf_size, size_t num_subbuf,
1041 unsigned int switch_timer_interval,
1042 unsigned int read_timer_interval);
1043
f7d06400 1044void lttng_metadata_channel_destroy(struct lttng_kernel_channel_buffer *chan);
1ae083ba 1045struct lttng_kernel_event_recorder *lttng_kernel_event_recorder_create(struct lttng_event_recorder_enabler *event_enabler,
def1e304 1046 const struct lttng_kernel_event_desc *event_desc);
1ae083ba 1047struct lttng_kernel_event_recorder *_lttng_kernel_event_recorder_create(struct lttng_event_recorder_enabler *event_enabler,
def1e304 1048 const struct lttng_kernel_event_desc *event_desc);
f7d06400 1049struct lttng_kernel_event_recorder *lttng_event_compat_old_create(struct lttng_kernel_channel_buffer *chan,
e8c0bbd3
MD		 1050 struct lttng_kernel_abi_old_event *old_event_param,
1051 const struct lttng_kernel_event_desc *internal_desc);
1052
1053struct lttng_kernel_event_notifier *lttng_event_notifier_create(
1054 const struct lttng_kernel_event_desc *event_notifier_desc,
1055 uint64_t id,
1056 uint64_t error_counter_idx,
1057 struct lttng_event_notifier_group *event_notifier_group,
1058 struct lttng_kernel_abi_event_notifier *event_notifier_param,
1059 enum lttng_kernel_abi_instrumentation itype);
1060struct lttng_kernel_event_notifier *_lttng_event_notifier_create(
1061 const struct lttng_kernel_event_desc *event_notifier_desc,
1062 uint64_t id,
1063 uint64_t error_counter_idx,
1064 struct lttng_event_notifier_group *event_notifier_group,
1065 struct lttng_kernel_abi_event_notifier *event_notifier_param,
1066 enum lttng_kernel_abi_instrumentation itype);
1067
6b757027
MD		 1068int lttng_channel_enable(struct lttng_kernel_channel_common *channel);
1069int lttng_channel_disable(struct lttng_kernel_channel_common *channel);
e8c0bbd3
MD		 1070int lttng_event_enable(struct lttng_kernel_event_common *event);
1071int lttng_event_disable(struct lttng_kernel_event_common *event);
1072
1073void lttng_transport_register(struct lttng_transport *transport);
1074void lttng_transport_unregister(struct lttng_transport *transport);
1075
1076void lttng_counter_transport_register(struct lttng_counter_transport *transport);
1077void lttng_counter_transport_unregister(struct lttng_counter_transport *transport);
1078
1079void synchronize_trace(void);
1080int lttng_abi_init(void);
1081int lttng_abi_compat_old_init(void);
1082void lttng_abi_exit(void);
1083void lttng_abi_compat_old_exit(void);
1084
1085const struct lttng_kernel_event_desc *lttng_event_desc_get(const char *name);
1086void lttng_event_desc_put(const struct lttng_kernel_event_desc *desc);
1087int lttng_probes_init(void);
1088void lttng_probes_exit(void);
1089
1090int lttng_metadata_output_channel(struct lttng_metadata_stream *stream,
860c213b 1091 struct lttng_kernel_ring_buffer_channel *chan, bool *coherent);
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MD		 1092
1093int lttng_id_tracker_get_node_id(const struct lttng_id_hash_node *node);
8c0393c3
MD		 1094int lttng_id_tracker_empty_set(struct lttng_kernel_id_tracker *lf);
1095int lttng_id_tracker_init(struct lttng_kernel_id_tracker *lf,
1096 struct lttng_kernel_session *session,
1097 enum tracker_type type);
1098void lttng_id_tracker_fini(struct lttng_kernel_id_tracker *lf);
1099void lttng_id_tracker_destroy(struct lttng_kernel_id_tracker *lf, bool rcu);
1100int lttng_id_tracker_add(struct lttng_kernel_id_tracker *lf, int id);
1101int lttng_id_tracker_del(struct lttng_kernel_id_tracker *lf, int id);
e8c0bbd3 1102
8cdc1a81 1103int lttng_session_track_id(struct lttng_kernel_session *session,
e8c0bbd3 1104 enum tracker_type tracker_type, int id);
8cdc1a81 1105int lttng_session_untrack_id(struct lttng_kernel_session *session,
e8c0bbd3
MD		 1106 enum tracker_type tracker_type, int id);
1107
8cdc1a81 1108int lttng_session_list_tracker_ids(struct lttng_kernel_session *session,
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MD		 1109 enum tracker_type tracker_type);
1110
1111void lttng_clock_ref(void);
1112void lttng_clock_unref(void);
1113
1114void lttng_free_event_filter_runtime(struct lttng_kernel_event_common *event);
1115
1116int lttng_probes_init(void);
1117
1118int lttng_logger_init(void);
1119void lttng_logger_exit(void);
1120
8cdc1a81 1121extern int lttng_statedump_start(struct lttng_kernel_session *session);
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MD		 1122
1123int lttng_calibrate(struct lttng_kernel_abi_calibrate *calibrate);
1124
1125extern const struct file_operations lttng_tracepoint_list_fops;
1126extern const struct file_operations lttng_syscall_list_fops;
1127
0fe45627
MD		 1128#define lttng_kernel_static_ctx_field(_event_field, _get_size, _record, _get_value, _destroy, _priv) \
1129 __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_ctx_field, { \
1130 .event_field = (_event_field), \
1131 .get_size = (_get_size), \
1132 .record = (_record), \
1133 .get_value = (_get_value), \
1134 .destroy = (_destroy), \
1135 .priv = (_priv), \
1136 })
1137
92bc1e23 1138#endif /* _LTTNG_EVENTS_INTERNAL_H */
LTTng 2.0/0.x modules
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