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