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Refactoring: struct lttng_channel
[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
437d5aa5
MD		 11#include <lttng/events.h>
12
344fe0f6 13struct lttng_syscall_filter;
7c1ba2ca
MD		 14struct lttng_metadata_cache;
15struct perf_event;
16struct perf_event_attr;
17struct lib_ring_buffer_config;
344fe0f6 18
311e655a
MD		 19enum lttng_enabler_format_type {
20 LTTNG_ENABLER_FORMAT_STAR_GLOB,
21 LTTNG_ENABLER_FORMAT_NAME,
22};
23
f7d06400
MD		 24enum channel_type {
25 PER_CPU_CHANNEL,
26 METADATA_CHANNEL,
27};
28
311e655a
MD		 29/*
30 * Objects in a linked-list of enablers, owned by an event.
31 */
32struct lttng_enabler_ref {
33 struct list_head node; /* enabler ref list */
34 struct lttng_enabler *ref; /* backward ref */
35};
36
e978f274
MD		 37struct lttng_krp; /* Kretprobe handling */
38
39struct lttng_uprobe_handler {
40 struct lttng_kernel_event_common *event;
41 loff_t offset;
42 struct uprobe_consumer up_consumer;
43 struct list_head node;
44};
45
46struct lttng_kprobe {
47 struct kprobe kp;
48 char *symbol_name;
49};
50
51struct lttng_uprobe {
52 struct inode *inode;
53 struct list_head head;
54};
55
56enum lttng_syscall_entryexit {
57 LTTNG_SYSCALL_ENTRY,
58 LTTNG_SYSCALL_EXIT,
59};
60
61enum lttng_syscall_abi {
62 LTTNG_SYSCALL_ABI_NATIVE,
63 LTTNG_SYSCALL_ABI_COMPAT,
64};
65
a67ba386
MD		 66struct lttng_kernel_event_common_private {
67 struct lttng_kernel_event_common *pub; /* Public event interface */
68
69 const struct lttng_kernel_event_desc *desc;
70 /* Backward references: list of lttng_enabler_ref (ref to enablers) */
71 struct list_head enablers_ref_head;
72 int registered; /* has reg'd tracepoint probe */
73 uint64_t user_token;
74
75 int has_enablers_without_filter_bytecode;
218585b9 76 /* list of struct lttng_kernel_bytecode_runtime, sorted by seqnum */
a67ba386
MD		 77 struct list_head filter_bytecode_runtime_head;
78 enum lttng_kernel_abi_instrumentation instrumentation;
79 /* Selected by instrumentation */
80 union {
81 struct lttng_kprobe kprobe;
82 struct lttng_uprobe uprobe;
83 struct {
84 struct lttng_krp *lttng_krp;
85 char *symbol_name;
86 } kretprobe;
87 struct {
88 enum lttng_syscall_entryexit entryexit;
89 enum lttng_syscall_abi abi;
90 struct hlist_node node; /* chain registered syscall event_notifier */
91 unsigned int syscall_id;
92 } syscall;
93 } u;
94};
95
96struct lttng_kernel_event_recorder_private {
97 struct lttng_kernel_event_common_private parent;
98
99 struct lttng_kernel_event_recorder *pub; /* Public event interface */
100 struct list_head node; /* Event recorder list */
101 struct hlist_node hlist; /* Hash table of event recorders */
102 struct lttng_kernel_ctx *ctx;
103 unsigned int id;
104 unsigned int metadata_dumped:1;
105};
106
107struct lttng_kernel_event_notifier_private {
108 struct lttng_kernel_event_common_private parent;
109
110 struct lttng_kernel_event_notifier *pub; /* Public event notifier interface */
111 struct lttng_event_notifier_group *group; /* weak ref */
112 size_t num_captures; /* Needed to allocate the msgpack array. */
113 uint64_t error_counter_index;
114 struct list_head node; /* Event notifier list */
115 struct hlist_node hlist; /* Hash table of event notifiers */
116 struct list_head capture_bytecode_runtime_head;
117
118};
119
f7d06400
MD		 120struct lttng_kernel_channel_common_private {
121 struct lttng_kernel_channel_common *pub;
122
123 struct file *file; /* File associated to channel */
124 unsigned int sys_enter_registered:1,
125 sys_exit_registered:1,
126 tstate:1; /* Transient enable state */
127
128 struct hlist_head *sc_table; /* for syscall tracing */
129 struct hlist_head *compat_sc_table;
130 struct hlist_head *sc_exit_table; /* for syscall exit tracing */
131 struct hlist_head *compat_sc_exit_table;
132 struct hlist_head sc_unknown; /* for unknown syscalls */
133 struct hlist_head sc_compat_unknown;
134 struct hlist_head sc_exit_unknown;
135 struct hlist_head compat_sc_exit_unknown;
136 struct lttng_syscall_filter *sc_filter;
137 int syscall_all_entry;
138 int syscall_all_exit;
139};
140
141struct lttng_kernel_channel_buffer_private {
142 struct lttng_kernel_channel_common_private parent;
143
144 struct lttng_kernel_channel_buffer *pub;
145
146 unsigned int id; /* Channel ID */
147 unsigned int free_event_id; /* Next event ID to allocate */
148 int header_type; /* 0: unset, 1: compact, 2: large */
149
150 enum channel_type channel_type;
151 struct lttng_kernel_ctx *ctx;
152 struct channel *rb_chan; /* Ring buffer channel */
153 unsigned int metadata_dumped:1;
154 struct list_head node; /* Channel list in session */
155 struct lttng_transport *transport;
156};
157
8a445457
MD		 158enum lttng_kernel_bytecode_interpreter_ret {
159 LTTNG_KERNEL_BYTECODE_INTERPRETER_ERROR = -1,
160 LTTNG_KERNEL_BYTECODE_INTERPRETER_OK = 0,
161};
162
163enum lttng_kernel_bytecode_filter_result {
164 LTTNG_KERNEL_BYTECODE_FILTER_ACCEPT = 0,
165 LTTNG_KERNEL_BYTECODE_FILTER_REJECT = 1,
166};
167
168struct lttng_kernel_bytecode_filter_ctx {
169 enum lttng_kernel_bytecode_filter_result result;
170};
171
1efb0502
MD		 172struct lttng_interpreter_output;
173
174enum lttng_kernel_bytecode_type {
175 LTTNG_KERNEL_BYTECODE_TYPE_FILTER,
176 LTTNG_KERNEL_BYTECODE_TYPE_CAPTURE,
177};
178
179struct lttng_kernel_bytecode_node {
180 enum lttng_kernel_bytecode_type type;
181 struct list_head node;
182 struct lttng_enabler *enabler;
183 struct {
184 uint32_t len;
185 uint32_t reloc_offset;
186 uint64_t seqnum;
187 char data[];
188 } bc;
189};
190
191struct lttng_kernel_bytecode_runtime {
192 /* Associated bytecode */
193 enum lttng_kernel_bytecode_type type;
194 struct lttng_kernel_bytecode_node *bc;
195 int (*interpreter_func)(struct lttng_kernel_bytecode_runtime *kernel_bytecode,
196 const char *interpreter_stack_data,
197 struct lttng_kernel_probe_ctx *lttng_probe_ctx,
198 void *caller_ctx);
199 int link_failed;
200 struct list_head node; /* list of bytecode runtime in event */
201 struct lttng_kernel_ctx *ctx;
202};
203
5e08a34f
MD		 204/*
205 * Enabler field, within whatever object is enabling an event. Target of
206 * backward reference.
207 */
208struct lttng_enabler {
209 enum lttng_enabler_format_type format_type;
210
d64ca521 211 /* head list of struct lttng_kernel_bytecode_node */
5e08a34f
MD		 212 struct list_head filter_bytecode_head;
213
214 struct lttng_kernel_abi_event event_param;
215 unsigned int enabled:1;
216
217 uint64_t user_token; /* User-provided token. */
218};
219
220struct lttng_event_enabler {
221 struct lttng_enabler base;
222 struct list_head node; /* per-session list of enablers */
f7d06400 223 struct lttng_kernel_channel_buffer *chan;
5e08a34f
MD		 224};
225
226struct lttng_event_notifier_enabler {
227 struct lttng_enabler base;
228 uint64_t error_counter_index;
229 struct list_head node; /* List of event_notifier enablers */
230 struct lttng_event_notifier_group *group;
231
d64ca521 232 /* head list of struct lttng_kernel_bytecode_node */
5e08a34f
MD		 233 struct list_head capture_bytecode_head;
234 uint64_t num_captures;
235};
236
0fe45627
MD		 237struct lttng_ctx_value {
238 union {
239 int64_t s64;
240 const char *str;
241 double d;
242 } u;
243};
244
245/*
246 * We need to keep this perf counter field separately from struct
247 * lttng_kernel_ctx_field because cpu hotplug needs fixed-location addresses.
248 */
249struct lttng_perf_counter_field {
250#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0))
251 struct lttng_cpuhp_node cpuhp_prepare;
252 struct lttng_cpuhp_node cpuhp_online;
253#else
254 struct notifier_block nb;
255 int hp_enable;
256#endif
257 struct perf_event_attr *attr;
258 struct perf_event **e; /* per-cpu array */
259 char *name;
260 struct lttng_kernel_event_field *event_field;
261};
262
263struct lttng_kernel_ctx_field {
264 const struct lttng_kernel_event_field *event_field;
a92e844e 265 size_t (*get_size)(void *priv, struct lttng_kernel_probe_ctx *probe_ctx,
0fe45627 266 size_t offset);
a92e844e 267 void (*record)(void *priv, struct lttng_kernel_probe_ctx *probe_ctx,
8a57ec02 268 struct lttng_kernel_ring_buffer_ctx *ctx,
f7d06400 269 struct lttng_kernel_channel_buffer *chan);
a92e844e 270 void (*get_value)(void *priv, struct lttng_kernel_probe_ctx *probe_ctx,
0fe45627
MD		 271 struct lttng_ctx_value *value);
272 void (*destroy)(void *priv);
273 void *priv;
274};
275
276struct lttng_kernel_ctx {
277 struct lttng_kernel_ctx_field *fields;
278 unsigned int nr_fields;
279 unsigned int allocated_fields;
280 size_t largest_align; /* in bytes */
281};
282
8a20497f
MD		 283struct lttng_metadata_cache {
284 char *data; /* Metadata cache */
285 unsigned int cache_alloc; /* Metadata allocated size (bytes) */
286 unsigned int metadata_written; /* Number of bytes written in metadata cache */
287 atomic_t producing; /* Metadata being produced (incomplete) */
288 struct kref refcount; /* Metadata cache usage */
289 struct list_head metadata_stream; /* Metadata stream list */
290 uuid_le uuid; /* Trace session unique ID (copy) */
291 struct mutex lock; /* Produce/consume lock */
292 uint64_t version; /* Current version of the metadata */
293};
294
a44f47dd
MD		 295struct lttng_metadata_stream {
296 void *priv; /* Ring buffer private data */
297 struct lttng_metadata_cache *metadata_cache;
298 unsigned int metadata_in; /* Bytes read from the cache */
299 unsigned int metadata_out; /* Bytes consumed from stream */
300 int finalized; /* Has channel been finalized */
301 wait_queue_head_t read_wait; /* Reader buffer-level wait queue */
302 struct list_head list; /* Stream list */
303 struct lttng_transport *transport;
304 uint64_t version; /* Current version of the metadata cache */
305 bool coherent; /* Stream in a coherent state */
306};
307
4a399b76
MD		 308struct lttng_kernel_channel_buffer_ops_private {
309 struct lttng_kernel_channel_buffer_ops *pub; /* Public channel buffer ops interface */
310
311 struct channel *(*channel_create)(const char *name,
312 void *priv,
313 void *buf_addr,
314 size_t subbuf_size, size_t num_subbuf,
315 unsigned int switch_timer_interval,
316 unsigned int read_timer_interval);
317 void (*channel_destroy)(struct channel *chan);
318 struct lib_ring_buffer *(*buffer_read_open)(struct channel *chan);
319 int (*buffer_has_read_closed_stream)(struct channel *chan);
320 void (*buffer_read_close)(struct lib_ring_buffer *buf);
321 /*
322 * packet_avail_size returns the available size in the current
323 * packet. Note that the size returned is only a hint, since it
324 * may change due to concurrent writes.
325 */
326 size_t (*packet_avail_size)(struct channel *chan);
327 wait_queue_head_t *(*get_writer_buf_wait_queue)(struct channel *chan, int cpu);
328 wait_queue_head_t *(*get_hp_wait_queue)(struct channel *chan);
329 int (*is_finalized)(struct channel *chan);
330 int (*is_disabled)(struct channel *chan);
331 int (*timestamp_begin) (const struct lib_ring_buffer_config *config,
332 struct lib_ring_buffer *bufb,
333 uint64_t *timestamp_begin);
334 int (*timestamp_end) (const struct lib_ring_buffer_config *config,
335 struct lib_ring_buffer *bufb,
336 uint64_t *timestamp_end);
337 int (*events_discarded) (const struct lib_ring_buffer_config *config,
338 struct lib_ring_buffer *bufb,
339 uint64_t *events_discarded);
340 int (*content_size) (const struct lib_ring_buffer_config *config,
341 struct lib_ring_buffer *bufb,
342 uint64_t *content_size);
343 int (*packet_size) (const struct lib_ring_buffer_config *config,
344 struct lib_ring_buffer *bufb,
345 uint64_t *packet_size);
346 int (*stream_id) (const struct lib_ring_buffer_config *config,
347 struct lib_ring_buffer *bufb,
348 uint64_t *stream_id);
349 int (*current_timestamp) (const struct lib_ring_buffer_config *config,
350 struct lib_ring_buffer *bufb,
351 uint64_t *ts);
352 int (*sequence_number) (const struct lib_ring_buffer_config *config,
353 struct lib_ring_buffer *bufb,
354 uint64_t *seq);
355 int (*instance_id) (const struct lib_ring_buffer_config *config,
356 struct lib_ring_buffer *bufb,
357 uint64_t *id);
358};
359
b0315544
MD		 360struct lttng_counter_ops {
361 struct lib_counter *(*counter_create)(size_t nr_dimensions,
362 const size_t *max_nr_elem, /* for each dimension */
363 int64_t global_sum_step);
364 void (*counter_destroy)(struct lib_counter *counter);
365 int (*counter_add)(struct lib_counter *counter, const size_t *dimension_indexes,
366 int64_t v);
367 /*
368 * counter_read reads a specific cpu's counter if @cpu >= 0, or
369 * the global aggregation counter if @cpu == -1.
370 */
371 int (*counter_read)(struct lib_counter *counter, const size_t *dimension_indexes, int cpu,
372 int64_t *value, bool *overflow, bool *underflow);
373 /*
374 * counter_aggregate returns the total sum of all per-cpu counters and
375 * the global aggregation counter.
376 */
377 int (*counter_aggregate)(struct lib_counter *counter, const size_t *dimension_indexes,
378 int64_t *value, bool *overflow, bool *underflow);
379 int (*counter_clear)(struct lib_counter *counter, const size_t *dimension_indexes);
380};
381
382struct lttng_counter {
383 struct file *file; /* File associated to counter. */
384 struct file *owner;
385 struct lttng_counter_transport *transport;
386 struct lib_counter *counter;
387 struct lttng_counter_ops *ops;
388};
389
9190fb56
MD		 390#define LTTNG_EVENT_NOTIFIER_HT_BITS 12
391#define LTTNG_EVENT_NOTIFIER_HT_SIZE (1U << LTTNG_EVENT_NOTIFIER_HT_BITS)
392
393struct lttng_event_notifier_ht {
394 struct hlist_head table[LTTNG_EVENT_NOTIFIER_HT_SIZE];
395};
396
b0315544
MD		 397struct lttng_event_notifier_group {
398 struct file *file; /* File associated to event notifier group */
399 struct file *notif_file; /* File used to expose notifications to userspace. */
400 struct list_head node; /* event notifier group list */
401 struct list_head enablers_head; /* List of enablers */
402 struct list_head event_notifiers_head; /* List of event notifier */
403 struct lttng_event_notifier_ht event_notifiers_ht; /* Hash table of event notifiers */
404 struct lttng_kernel_channel_buffer_ops *ops;
405 struct lttng_transport *transport;
406 struct channel *chan; /* Ring buffer channel for event notifier group. */
407 struct lib_ring_buffer *buf; /* Ring buffer for event notifier group. */
408 wait_queue_head_t read_wait;
409 struct irq_work wakeup_pending; /* Pending wakeup irq work. */
410 struct lttng_kernel_event_notifier *sc_unknown; /* for unknown syscalls */
411 struct lttng_kernel_event_notifier *sc_compat_unknown;
412
413 struct lttng_syscall_filter *sc_filter;
414
415 struct hlist_head *event_notifier_syscall_dispatch;
416 struct hlist_head *event_notifier_compat_syscall_dispatch;
417 struct hlist_head *event_notifier_exit_syscall_dispatch;
418 struct hlist_head *event_notifier_exit_compat_syscall_dispatch;
419
420 struct hlist_head event_notifier_unknown_syscall_dispatch;
421 struct hlist_head event_notifier_compat_unknown_syscall_dispatch;
422 struct hlist_head event_notifier_exit_unknown_syscall_dispatch;
423 struct hlist_head event_notifier_exit_compat_unknown_syscall_dispatch;
424
425 int syscall_all_entry;
426 int syscall_all_exit;
427
428 unsigned int sys_enter_registered:1, sys_exit_registered:1;
429
430 struct lttng_counter *error_counter;
431 size_t error_counter_len;
432};
433
434struct lttng_transport {
435 char *name;
436 struct module *owner;
437 struct list_head node;
438 struct lttng_kernel_channel_buffer_ops ops;
439};
440
441struct lttng_counter_transport {
442 char *name;
443 struct module *owner;
444 struct list_head node;
445 struct lttng_counter_ops ops;
446};
447
9190fb56
MD		 448#define LTTNG_EVENT_HT_BITS 12
449#define LTTNG_EVENT_HT_SIZE (1U << LTTNG_EVENT_HT_BITS)
450
451struct lttng_event_ht {
452 struct hlist_head table[LTTNG_EVENT_HT_SIZE];
453};
454
8cdc1a81
MD		 455struct lttng_kernel_session_private {
456 struct lttng_kernel_session *pub; /* Public session interface */
457
458 int been_active; /* Has trace session been active ? */
459 struct file *file; /* File associated to session */
460 struct list_head chan; /* Channel list head */
461 struct list_head events; /* Event list head */
462 struct list_head list; /* Session list */
463 unsigned int free_chan_id; /* Next chan ID to allocate */
464 uuid_le uuid; /* Trace session unique ID */
465 struct lttng_metadata_cache *metadata_cache;
466 unsigned int metadata_dumped:1,
467 tstate:1; /* Transient enable state */
468 /* List of event enablers */
469 struct list_head enablers_head;
470 /* Hash table of events */
471 struct lttng_event_ht events_ht;
472 char name[LTTNG_KERNEL_ABI_SESSION_NAME_LEN];
473 char creation_time[LTTNG_KERNEL_ABI_SESSION_CREATION_TIME_ISO8601_LEN];
474};
475
fc66bf6a
MD		 476struct lttng_id_hash_node {
477 struct hlist_node hlist;
478 int id;
479};
480
8c0393c3
MD		 481enum tracker_type {
482 TRACKER_PID,
483 TRACKER_VPID,
484 TRACKER_UID,
485 TRACKER_VUID,
486 TRACKER_GID,
487 TRACKER_VGID,
488
489 TRACKER_UNKNOWN,
490};
491
492struct lttng_kernel_id_tracker_private {
493 struct lttng_kernel_id_tracker *pub; /* Public interface */
494
495 struct lttng_kernel_session *session;
496 enum tracker_type tracker_type;
497};
498
0fe45627
MD		 499extern struct lttng_kernel_ctx *lttng_static_ctx;
500
437d5aa5
MD		 501static inline
502const struct lttng_kernel_type_integer *lttng_kernel_get_type_integer(const struct lttng_kernel_type_common *type)
503{
504 if (type->type != lttng_kernel_type_integer)
505 return NULL;
506 return container_of(type, const struct lttng_kernel_type_integer, parent);
507}
508
509static inline
510const struct lttng_kernel_type_string *lttng_kernel_get_type_string(const struct lttng_kernel_type_common *type)
511{
512 if (type->type != lttng_kernel_type_string)
513 return NULL;
514 return container_of(type, const struct lttng_kernel_type_string, parent);
515}
516
517static inline
518const struct lttng_kernel_type_enum *lttng_kernel_get_type_enum(const struct lttng_kernel_type_common *type)
519{
520 if (type->type != lttng_kernel_type_enum)
521 return NULL;
522 return container_of(type, const struct lttng_kernel_type_enum, parent);
523}
524
525static inline
526const struct lttng_kernel_type_array *lttng_kernel_get_type_array(const struct lttng_kernel_type_common *type)
527{
528 if (type->type != lttng_kernel_type_array)
529 return NULL;
530 return container_of(type, const struct lttng_kernel_type_array, parent);
531}
532
533static inline
534const struct lttng_kernel_type_sequence *lttng_kernel_get_type_sequence(const struct lttng_kernel_type_common *type)
535{
536 if (type->type != lttng_kernel_type_sequence)
537 return NULL;
538 return container_of(type, const struct lttng_kernel_type_sequence, parent);
539}
540
541static inline
542const struct lttng_kernel_type_struct *lttng_kernel_get_type_struct(const struct lttng_kernel_type_common *type)
543{
544 if (type->type != lttng_kernel_type_struct)
545 return NULL;
546 return container_of(type, const struct lttng_kernel_type_struct, parent);
547}
548
549static inline
550const struct lttng_kernel_type_variant *lttng_kernel_get_type_variant(const struct lttng_kernel_type_common *type)
551{
552 if (type->type != lttng_kernel_type_variant)
553 return NULL;
554 return container_of(type, const struct lttng_kernel_type_variant, parent);
555}
556
557static inline bool lttng_kernel_type_is_bytewise_integer(const struct lttng_kernel_type_common *type)
558{
559 const struct lttng_kernel_type_integer *type_integer = lttng_kernel_get_type_integer(type);
560
561 if (!type_integer)
562 return false;
563 switch (type_integer->size) {
564 case 8: /* Fall-through. */
565 case 16: /* Fall-through. */
566 case 32: /* Fall-through. */
567 case 64:
568 break;
569 default:
570 return false;
571 }
572 return true;
573}
574
8a445457
MD		 575int lttng_kernel_interpret_event_filter(const struct lttng_kernel_event_common *event,
576 const char *interpreter_stack_data,
a92e844e 577 struct lttng_kernel_probe_ctx *probe_ctx,
8a445457
MD		 578 void *event_filter_ctx);
579
5e08a34f
MD		 580static inline
581struct lttng_enabler *lttng_event_enabler_as_enabler(
582 struct lttng_event_enabler *event_enabler)
583{
584 return &event_enabler->base;
585}
586
587static inline
588struct lttng_enabler *lttng_event_notifier_enabler_as_enabler(
589 struct lttng_event_notifier_enabler *event_notifier_enabler)
590{
591 return &event_notifier_enabler->base;
592}
593
0fe45627
MD		 594int lttng_context_init(void);
595void lttng_context_exit(void);
596int lttng_kernel_context_append(struct lttng_kernel_ctx **ctx_p,
597 const struct lttng_kernel_ctx_field *f);
598void lttng_kernel_context_remove_last(struct lttng_kernel_ctx **ctx_p);
599struct lttng_kernel_ctx_field *lttng_kernel_get_context_field_from_index(struct lttng_kernel_ctx *ctx,
600 size_t index);
601int lttng_kernel_find_context(struct lttng_kernel_ctx *ctx, const char *name);
602int lttng_kernel_get_context_index(struct lttng_kernel_ctx *ctx, const char *name);
603void lttng_kernel_destroy_context(struct lttng_kernel_ctx *ctx);
604int lttng_add_pid_to_ctx(struct lttng_kernel_ctx **ctx);
605int lttng_add_cpu_id_to_ctx(struct lttng_kernel_ctx **ctx);
606int lttng_add_procname_to_ctx(struct lttng_kernel_ctx **ctx);
607int lttng_add_prio_to_ctx(struct lttng_kernel_ctx **ctx);
608int lttng_add_nice_to_ctx(struct lttng_kernel_ctx **ctx);
609int lttng_add_vpid_to_ctx(struct lttng_kernel_ctx **ctx);
610int lttng_add_tid_to_ctx(struct lttng_kernel_ctx **ctx);
611int lttng_add_vtid_to_ctx(struct lttng_kernel_ctx **ctx);
612int lttng_add_ppid_to_ctx(struct lttng_kernel_ctx **ctx);
613int lttng_add_vppid_to_ctx(struct lttng_kernel_ctx **ctx);
614int lttng_add_hostname_to_ctx(struct lttng_kernel_ctx **ctx);
615int lttng_add_interruptible_to_ctx(struct lttng_kernel_ctx **ctx);
616int lttng_add_need_reschedule_to_ctx(struct lttng_kernel_ctx **ctx);
617#if defined(CONFIG_PREEMPT_RT_FULL) || defined(CONFIG_PREEMPT)
618int lttng_add_preemptible_to_ctx(struct lttng_kernel_ctx **ctx);
619#else
620static inline
621int lttng_add_preemptible_to_ctx(struct lttng_kernel_ctx **ctx)
622{
623 return -ENOSYS;
624}
625#endif
626#ifdef CONFIG_PREEMPT_RT_FULL
627int lttng_add_migratable_to_ctx(struct lttng_kernel_ctx **ctx);
628#else
629static inline
630int lttng_add_migratable_to_ctx(struct lttng_kernel_ctx **ctx)
631{
632 return -ENOSYS;
633}
634#endif
635
636int lttng_add_callstack_to_ctx(struct lttng_kernel_ctx **ctx, int type);
637
638#if defined(CONFIG_CGROUPS) && \
639 ((LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,6,0)) || \
640 LTTNG_UBUNTU_KERNEL_RANGE(4,4,0,0, 4,5,0,0))
641int lttng_add_cgroup_ns_to_ctx(struct lttng_kernel_ctx **ctx);
642#else
643static inline
644int lttng_add_cgroup_ns_to_ctx(struct lttng_kernel_ctx **ctx)
645{
646 return -ENOSYS;
647}
648#endif
649
650#if defined(CONFIG_IPC_NS) && \
651 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
652int lttng_add_ipc_ns_to_ctx(struct lttng_kernel_ctx **ctx);
653#else
654static inline
655int lttng_add_ipc_ns_to_ctx(struct lttng_kernel_ctx **ctx)
656{
657 return -ENOSYS;
658}
659#endif
660
661#if !defined(LTTNG_MNT_NS_MISSING_HEADER) && \
662 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
663int lttng_add_mnt_ns_to_ctx(struct lttng_kernel_ctx **ctx);
664#else
665static inline
666int lttng_add_mnt_ns_to_ctx(struct lttng_kernel_ctx **ctx)
667{
668 return -ENOSYS;
669}
670#endif
671
672#if defined(CONFIG_NET_NS) && \
673 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
674int lttng_add_net_ns_to_ctx(struct lttng_kernel_ctx **ctx);
675#else
676static inline
677int lttng_add_net_ns_to_ctx(struct lttng_kernel_ctx **ctx)
678{
679 return -ENOSYS;
680}
681#endif
682
683#if defined(CONFIG_PID_NS) && \
684 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
685int lttng_add_pid_ns_to_ctx(struct lttng_kernel_ctx **ctx);
686#else
687static inline
688int lttng_add_pid_ns_to_ctx(struct lttng_kernel_ctx **ctx)
689{
690 return -ENOSYS;
691}
692#endif
693
694#if defined(CONFIG_USER_NS) && \
695 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
696int lttng_add_user_ns_to_ctx(struct lttng_kernel_ctx **ctx);
697#else
698static inline
699int lttng_add_user_ns_to_ctx(struct lttng_kernel_ctx **ctx)
700{
701 return -ENOSYS;
702}
703#endif
704
705#if defined(CONFIG_UTS_NS) && \
706 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0))
707int lttng_add_uts_ns_to_ctx(struct lttng_kernel_ctx **ctx);
708#else
709static inline
710int lttng_add_uts_ns_to_ctx(struct lttng_kernel_ctx **ctx)
711{
712 return -ENOSYS;
713}
714#endif
715
716#if defined(CONFIG_TIME_NS) && \
717 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,6,0))
718int lttng_add_time_ns_to_ctx(struct lttng_kernel_ctx **ctx);
719#else
720static inline
721int lttng_add_time_ns_to_ctx(struct lttng_kernel_ctx **ctx)
722{
723 return -ENOSYS;
724}
725#endif
726
727int lttng_add_uid_to_ctx(struct lttng_kernel_ctx **ctx);
728int lttng_add_euid_to_ctx(struct lttng_kernel_ctx **ctx);
729int lttng_add_suid_to_ctx(struct lttng_kernel_ctx **ctx);
730int lttng_add_gid_to_ctx(struct lttng_kernel_ctx **ctx);
731int lttng_add_egid_to_ctx(struct lttng_kernel_ctx **ctx);
732int lttng_add_sgid_to_ctx(struct lttng_kernel_ctx **ctx);
733int lttng_add_vuid_to_ctx(struct lttng_kernel_ctx **ctx);
734int lttng_add_veuid_to_ctx(struct lttng_kernel_ctx **ctx);
735int lttng_add_vsuid_to_ctx(struct lttng_kernel_ctx **ctx);
736int lttng_add_vgid_to_ctx(struct lttng_kernel_ctx **ctx);
737int lttng_add_vegid_to_ctx(struct lttng_kernel_ctx **ctx);
738int lttng_add_vsgid_to_ctx(struct lttng_kernel_ctx **ctx);
739
740#if defined(CONFIG_PERF_EVENTS)
741int lttng_add_perf_counter_to_ctx(uint32_t type,
742 uint64_t config,
743 const char *name,
744 struct lttng_kernel_ctx **ctx);
745int lttng_cpuhp_perf_counter_online(unsigned int cpu,
746 struct lttng_cpuhp_node *node);
747int lttng_cpuhp_perf_counter_dead(unsigned int cpu,
748 struct lttng_cpuhp_node *node);
749#else
750static inline
751int lttng_add_perf_counter_to_ctx(uint32_t type,
752 uint64_t config,
753 const char *name,
754 struct lttng_kernel_ctx **ctx)
755{
756 return -ENOSYS;
757}
758static inline
759int lttng_cpuhp_perf_counter_online(unsigned int cpu,
760 struct lttng_cpuhp_node *node)
761{
762 return 0;
763}
764static inline
765int lttng_cpuhp_perf_counter_dead(unsigned int cpu,
766 struct lttng_cpuhp_node *node)
767{
768 return 0;
769}
770#endif
771
311e655a
MD		 772struct lttng_event_enabler *lttng_event_enabler_create(
773 enum lttng_enabler_format_type format_type,
774 struct lttng_kernel_abi_event *event_param,
f7d06400 775 struct lttng_kernel_channel_buffer *chan);
311e655a
MD		 776
777int lttng_event_enabler_enable(struct lttng_event_enabler *event_enabler);
778int lttng_event_enabler_disable(struct lttng_event_enabler *event_enabler);
779struct lttng_event_notifier_enabler *lttng_event_notifier_enabler_create(
780 struct lttng_event_notifier_group *event_notifier_group,
781 enum lttng_enabler_format_type format_type,
782 struct lttng_kernel_abi_event_notifier *event_notifier_param);
783
784int lttng_event_notifier_enabler_enable(
785 struct lttng_event_notifier_enabler *event_notifier_enabler);
786int lttng_event_notifier_enabler_disable(
787 struct lttng_event_notifier_enabler *event_notifier_enabler);
788
789int lttng_event_enabler_attach_filter_bytecode(struct lttng_event_enabler *event_enabler,
790 struct lttng_kernel_abi_filter_bytecode __user *bytecode);
791int lttng_event_notifier_enabler_attach_filter_bytecode(
792 struct lttng_event_notifier_enabler *event_notifier_enabler,
793 struct lttng_kernel_abi_filter_bytecode __user *bytecode);
794int lttng_event_notifier_enabler_attach_capture_bytecode(
795 struct lttng_event_notifier_enabler *event_notifier_enabler,
796 struct lttng_kernel_abi_capture_bytecode __user *bytecode);
797
798int lttng_desc_match_enabler(const struct lttng_kernel_event_desc *desc,
799 struct lttng_enabler *enabler);
800
801void lttng_enabler_link_bytecode(const struct lttng_kernel_event_desc *event_desc,
802 struct lttng_kernel_ctx *ctx,
803 struct list_head *instance_bytecode_runtime_head,
804 struct list_head *enabler_bytecode_runtime_head);
805
806#if defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS)
807int lttng_syscalls_register_event(struct lttng_event_enabler *event_enabler);
f7d06400
MD		 808int lttng_syscalls_unregister_channel(struct lttng_kernel_channel_buffer *chan);
809int lttng_syscalls_destroy_event(struct lttng_kernel_channel_buffer *chan);
311e655a 810int lttng_syscall_filter_enable_event(
f7d06400 811 struct lttng_kernel_channel_buffer *chan,
311e655a
MD		 812 struct lttng_kernel_event_recorder *event);
813int lttng_syscall_filter_disable_event(
f7d06400 814 struct lttng_kernel_channel_buffer *chan,
311e655a
MD		 815 struct lttng_kernel_event_recorder *event);
816
f7d06400 817long lttng_channel_syscall_mask(struct lttng_kernel_channel_buffer *channel,
311e655a
MD		 818 struct lttng_kernel_abi_syscall_mask __user *usyscall_mask);
819
820int lttng_syscalls_register_event_notifier(
821 struct lttng_event_notifier_enabler *event_notifier_enabler);
822int lttng_syscalls_create_matching_event_notifiers(
823 struct lttng_event_notifier_enabler *event_notifier_enabler);
824int lttng_syscalls_unregister_event_notifier_group(struct lttng_event_notifier_group *group);
825int lttng_syscall_filter_enable_event_notifier(struct lttng_kernel_event_notifier *event_notifier);
826int lttng_syscall_filter_disable_event_notifier(struct lttng_kernel_event_notifier *event_notifier);
827#else
828static inline int lttng_syscalls_register_event(
829 struct lttng_event_enabler *event_enabler)
830{
831 return -ENOSYS;
832}
833
f7d06400 834static inline int lttng_syscalls_unregister_channel(struct lttng_kernel_channel_buffer *chan)
311e655a
MD		 835{
836 return 0;
837}
838
f7d06400 839static inline int lttng_syscalls_destroy(struct lttng_kernel_channel_buffer *chan)
311e655a
MD		 840{
841 return 0;
842}
843
f7d06400 844static inline int lttng_syscall_filter_enable_event(struct lttng_kernel_channel_buffer *chan,
311e655a
MD		 845 struct lttng_kernel_event_recorder *event);
846{
847 return -ENOSYS;
848}
849
f7d06400 850static inline int lttng_syscall_filter_disable_event(struct lttng_kernel_channel_buffer *chan,
311e655a
MD		 851 struct lttng_kernel_event_recorder *event);
852{
853 return -ENOSYS;
854}
855
f7d06400 856static inline long lttng_channel_syscall_mask(struct lttng_kernel_channel_buffer *channel,
311e655a
MD		 857 struct lttng_kernel_syscall_mask __user *usyscall_mask)
858{
859 return -ENOSYS;
860}
861
862static inline int lttng_syscalls_register_event_notifier(
863 struct lttng_event_notifier_group *group)
864{
865 return -ENOSYS;
866}
867
868static inline int lttng_syscalls_unregister_event_notifier_group(
869 struct lttng_event_notifier_group *group)
870{
871 return 0;
872}
873
874static inline int lttng_syscall_filter_enable_event_notifier(
875 struct lttng_event_notifier_group *group,
876 const char *name)
877{
878 return -ENOSYS;
879}
880
881static inline int lttng_syscall_filter_disable_event_notifier(
882 struct lttng_event_notifier_group *group,
883 const char *name)
884{
885 return -ENOSYS;
886}
0fe45627 887
311e655a 888#endif
0fe45627 889
e4a26d6b
MD		 890#ifdef CONFIG_KPROBES
891int lttng_kprobes_register_event(const char *name,
892 const char *symbol_name,
893 uint64_t offset,
894 uint64_t addr,
895 struct lttng_kernel_event_recorder *event);
896void lttng_kprobes_unregister_event(struct lttng_kernel_event_recorder *event);
897void lttng_kprobes_destroy_event_private(struct lttng_kernel_event_recorder *event);
898int lttng_kprobes_register_event_notifier(const char *symbol_name,
899 uint64_t offset,
900 uint64_t addr,
901 struct lttng_kernel_event_notifier *event_notifier);
902void lttng_kprobes_unregister_event_notifier(struct lttng_kernel_event_notifier *event_notifier);
903void lttng_kprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier *event_notifier);
904#else
905static inline
906int lttng_kprobes_register_event(const char *name,
907 const char *symbol_name,
908 uint64_t offset,
909 uint64_t addr,
910 struct lttng_kernel_event_recorder *event)
911{
912 return -ENOSYS;
913}
914
915static inline
916void lttng_kprobes_unregister_event(struct lttng_kernel_event_recorder *event)
917{
918}
919
920static inline
921void lttng_kprobes_destroy_event_private(struct lttng_kernel_event_recorder *event)
922{
923}
924
925static inline
926int lttng_kprobes_register_event_notifier(const char *symbol_name,
927 uint64_t offset,
928 uint64_t addr,
929 struct lttng_kernel_event_notifier *event_notifier)
930{
931 return -ENOSYS;
932}
933
934static inline
935void lttng_kprobes_unregister_event_notifier(struct lttng_kernel_event_notifier *event_notifier)
936{
937}
938
939static inline
940void lttng_kprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier *event_notifier)
941{
942}
943#endif
944
945int lttng_event_add_callsite(struct lttng_kernel_event_common *event,
946 struct lttng_kernel_abi_event_callsite __user *callsite);
947
948#ifdef CONFIG_UPROBES
949int lttng_uprobes_register_event(const char *name,
950 int fd, struct lttng_kernel_event_recorder *event);
951int lttng_uprobes_event_add_callsite(struct lttng_kernel_event_common *event,
952 struct lttng_kernel_abi_event_callsite __user *callsite);
953void lttng_uprobes_unregister_event(struct lttng_kernel_event_recorder *event);
954void lttng_uprobes_destroy_event_private(struct lttng_kernel_event_recorder *event);
955int lttng_uprobes_register_event_notifier(const char *name,
956 int fd, struct lttng_kernel_event_notifier *event_notifier);
957void lttng_uprobes_unregister_event_notifier(struct lttng_kernel_event_notifier *event_notifier);
958void lttng_uprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier *event_notifier);
959#else
960static inline
961int lttng_uprobes_register_event(const char *name,
962 int fd, struct lttng_kernel_event_recorder *event)
963{
964 return -ENOSYS;
965}
966
967static inline
968int lttng_uprobes_event_add_callsite(struct lttng_kernel_event_common *event,
969 struct lttng_kernel_abi_event_callsite __user *callsite)
970{
971 return -ENOSYS;
972}
973
974static inline
975void lttng_uprobes_unregister_event(struct lttng_kernel_event_recorder *event)
976{
977}
978
979static inline
980void lttng_uprobes_destroy_event_private(struct lttng_kernel_event_recorder *event)
981{
982}
983
984static inline
985int lttng_uprobes_register_event_notifier(const char *name,
986 int fd, struct lttng_kernel_event_notifier *event_notifier)
987{
988 return -ENOSYS;
989}
990
991static inline
992void lttng_uprobes_unregister_event_notifier(struct lttng_kernel_event_notifier *event_notifier)
993{
994}
995
996static inline
997void lttng_uprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier *event_notifier)
998{
999}
1000#endif
1001
1002#ifdef CONFIG_KRETPROBES
1003int lttng_kretprobes_register(const char *name,
1004 const char *symbol_name,
1005 uint64_t offset,
1006 uint64_t addr,
1007 struct lttng_kernel_event_recorder *event_entry,
1008 struct lttng_kernel_event_recorder *event_exit);
1009void lttng_kretprobes_unregister(struct lttng_kernel_event_recorder *event);
1010void lttng_kretprobes_destroy_private(struct lttng_kernel_event_recorder *event);
1011int lttng_kretprobes_event_enable_state(struct lttng_kernel_event_common *event,
1012 int enable);
1013#else
1014static inline
1015int lttng_kretprobes_register(const char *name,
1016 const char *symbol_name,
1017 uint64_t offset,
1018 uint64_t addr,
1019 struct lttng_kernel_event_recorder *event_entry,
1020 struct lttng_kernel_event_recorder *event_exit)
1021{
1022 return -ENOSYS;
1023}
1024
1025static inline
1026void lttng_kretprobes_unregister(struct lttng_kernel_event_recorder *event)
1027{
1028}
1029
1030static inline
1031void lttng_kretprobes_destroy_private(struct lttng_kernel_event_recorder *event)
1032{
1033}
1034
1035static inline
1036int lttng_kretprobes_event_enable_state(struct lttng_kernel_event_common *event,
1037 int enable)
1038{
1039 return -ENOSYS;
1040}
1041#endif
1042
e8c0bbd3
MD		 1043void lttng_lock_sessions(void);
1044void lttng_unlock_sessions(void);
1045
1046struct list_head *lttng_get_probe_list_head(void);
1047
1048int lttng_fix_pending_events(void);
1049int lttng_fix_pending_event_notifiers(void);
1050int lttng_session_active(void);
1051bool lttng_event_notifier_active(void);
1052
8cdc1a81
MD		 1053struct lttng_kernel_session *lttng_session_create(void);
1054int lttng_session_enable(struct lttng_kernel_session *session);
1055int lttng_session_disable(struct lttng_kernel_session *session);
1056void lttng_session_destroy(struct lttng_kernel_session *session);
1057int lttng_session_metadata_regenerate(struct lttng_kernel_session *session);
1058int lttng_session_statedump(struct lttng_kernel_session *session);
e8c0bbd3
MD		 1059void metadata_cache_destroy(struct kref *kref);
1060
1061struct lttng_counter *lttng_kernel_counter_create(
1062 const char *counter_transport_name, size_t number_dimensions,
1063 const size_t *dimensions_sizes);
1064int lttng_kernel_counter_read(struct lttng_counter *counter,
1065 const size_t *dimension_indexes, int32_t cpu,
1066 int64_t *val, bool *overflow, bool *underflow);
1067int lttng_kernel_counter_aggregate(struct lttng_counter *counter,
1068 const size_t *dimension_indexes, int64_t *val,
1069 bool *overflow, bool *underflow);
1070int lttng_kernel_counter_clear(struct lttng_counter *counter,
1071 const size_t *dimension_indexes);
1072struct lttng_event_notifier_group *lttng_event_notifier_group_create(void);
1073int lttng_event_notifier_group_create_error_counter(
1074 struct file *event_notifier_group_file,
1075 const struct lttng_kernel_abi_counter_conf *error_counter_conf);
1076void lttng_event_notifier_group_destroy(
1077 struct lttng_event_notifier_group *event_notifier_group);
1078
f7d06400 1079struct lttng_kernel_channel_buffer *lttng_channel_create(struct lttng_kernel_session *session,
e8c0bbd3
MD		 1080 const char *transport_name,
1081 void *buf_addr,
1082 size_t subbuf_size, size_t num_subbuf,
1083 unsigned int switch_timer_interval,
1084 unsigned int read_timer_interval,
1085 enum channel_type channel_type);
f7d06400 1086struct lttng_kernel_channel_buffer *lttng_global_channel_create(struct lttng_kernel_session *session,
e8c0bbd3
MD		 1087 int overwrite, void *buf_addr,
1088 size_t subbuf_size, size_t num_subbuf,
1089 unsigned int switch_timer_interval,
1090 unsigned int read_timer_interval);
1091
f7d06400
MD		 1092void lttng_metadata_channel_destroy(struct lttng_kernel_channel_buffer *chan);
1093struct lttng_kernel_event_recorder *lttng_kernel_event_recorder_create(struct lttng_kernel_channel_buffer *chan,
e8c0bbd3
MD		 1094 struct lttng_kernel_abi_event *event_param,
1095 const struct lttng_kernel_event_desc *event_desc,
1096 enum lttng_kernel_abi_instrumentation itype);
f7d06400 1097struct lttng_kernel_event_recorder *_lttng_kernel_event_recorder_create(struct lttng_kernel_channel_buffer *chan,
e8c0bbd3
MD		 1098 struct lttng_kernel_abi_event *event_param,
1099 const struct lttng_kernel_event_desc *event_desc,
1100 enum lttng_kernel_abi_instrumentation itype);
f7d06400 1101struct lttng_kernel_event_recorder *lttng_event_compat_old_create(struct lttng_kernel_channel_buffer *chan,
e8c0bbd3
MD		 1102 struct lttng_kernel_abi_old_event *old_event_param,
1103 const struct lttng_kernel_event_desc *internal_desc);
1104
1105struct lttng_kernel_event_notifier *lttng_event_notifier_create(
1106 const struct lttng_kernel_event_desc *event_notifier_desc,
1107 uint64_t id,
1108 uint64_t error_counter_idx,
1109 struct lttng_event_notifier_group *event_notifier_group,
1110 struct lttng_kernel_abi_event_notifier *event_notifier_param,
1111 enum lttng_kernel_abi_instrumentation itype);
1112struct lttng_kernel_event_notifier *_lttng_event_notifier_create(
1113 const struct lttng_kernel_event_desc *event_notifier_desc,
1114 uint64_t id,
1115 uint64_t error_counter_idx,
1116 struct lttng_event_notifier_group *event_notifier_group,
1117 struct lttng_kernel_abi_event_notifier *event_notifier_param,
1118 enum lttng_kernel_abi_instrumentation itype);
1119
f7d06400
MD		 1120int lttng_channel_enable(struct lttng_kernel_channel_buffer *channel);
1121int lttng_channel_disable(struct lttng_kernel_channel_buffer *channel);
e8c0bbd3
MD		 1122int lttng_event_enable(struct lttng_kernel_event_common *event);
1123int lttng_event_disable(struct lttng_kernel_event_common *event);
1124
1125void lttng_transport_register(struct lttng_transport *transport);
1126void lttng_transport_unregister(struct lttng_transport *transport);
1127
1128void lttng_counter_transport_register(struct lttng_counter_transport *transport);
1129void lttng_counter_transport_unregister(struct lttng_counter_transport *transport);
1130
1131void synchronize_trace(void);
1132int lttng_abi_init(void);
1133int lttng_abi_compat_old_init(void);
1134void lttng_abi_exit(void);
1135void lttng_abi_compat_old_exit(void);
1136
1137const struct lttng_kernel_event_desc *lttng_event_desc_get(const char *name);
1138void lttng_event_desc_put(const struct lttng_kernel_event_desc *desc);
1139int lttng_probes_init(void);
1140void lttng_probes_exit(void);
1141
1142int lttng_metadata_output_channel(struct lttng_metadata_stream *stream,
1143 struct channel *chan, bool *coherent);
1144
1145int lttng_id_tracker_get_node_id(const struct lttng_id_hash_node *node);
8c0393c3
MD		 1146int lttng_id_tracker_empty_set(struct lttng_kernel_id_tracker *lf);
1147int lttng_id_tracker_init(struct lttng_kernel_id_tracker *lf,
1148 struct lttng_kernel_session *session,
1149 enum tracker_type type);
1150void lttng_id_tracker_fini(struct lttng_kernel_id_tracker *lf);
1151void lttng_id_tracker_destroy(struct lttng_kernel_id_tracker *lf, bool rcu);
1152int lttng_id_tracker_add(struct lttng_kernel_id_tracker *lf, int id);
1153int lttng_id_tracker_del(struct lttng_kernel_id_tracker *lf, int id);
e8c0bbd3 1154
8cdc1a81 1155int lttng_session_track_id(struct lttng_kernel_session *session,
e8c0bbd3 1156 enum tracker_type tracker_type, int id);
8cdc1a81 1157int lttng_session_untrack_id(struct lttng_kernel_session *session,
e8c0bbd3
MD		 1158 enum tracker_type tracker_type, int id);
1159
8cdc1a81 1160int lttng_session_list_tracker_ids(struct lttng_kernel_session *session,
e8c0bbd3
MD		 1161 enum tracker_type tracker_type);
1162
1163void lttng_clock_ref(void);
1164void lttng_clock_unref(void);
1165
1166void lttng_free_event_filter_runtime(struct lttng_kernel_event_common *event);
1167
1168int lttng_probes_init(void);
1169
1170int lttng_logger_init(void);
1171void lttng_logger_exit(void);
1172
8cdc1a81 1173extern int lttng_statedump_start(struct lttng_kernel_session *session);
e8c0bbd3
MD		 1174
1175int lttng_calibrate(struct lttng_kernel_abi_calibrate *calibrate);
1176
1177extern const struct file_operations lttng_tracepoint_list_fops;
1178extern const struct file_operations lttng_syscall_list_fops;
1179
0fe45627
MD		 1180#define lttng_kernel_static_ctx_field(_event_field, _get_size, _record, _get_value, _destroy, _priv) \
1181 __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_ctx_field, { \
1182 .event_field = (_event_field), \
1183 .get_size = (_get_size), \
1184 .record = (_record), \
1185 .get_value = (_get_value), \
1186 .destroy = (_destroy), \
1187 .priv = (_priv), \
1188 })
1189
92bc1e23 1190#endif /* _LTTNG_EVENTS_INTERNAL_H */
LTTng 2.0/0.x modules
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