Commit | Line | Data |
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92bc1e23 MD |
1 | /* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only) |
2 | * | |
3 | * lttng/events-internal.h | |
4 | * | |
5 | * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
6 | */ | |
7 | ||
8 | #ifndef _LTTNG_EVENTS_INTERNAL_H | |
9 | #define _LTTNG_EVENTS_INTERNAL_H | |
10 | ||
437d5aa5 MD |
11 | #include <lttng/events.h> |
12 | ||
71aef1c1 | 13 | struct lttng_syscall_filter; |
bdd23a70 MD |
14 | struct lttng_metadata_cache; |
15 | struct perf_event; | |
16 | struct perf_event_attr; | |
17 | struct lib_ring_buffer_config; | |
71aef1c1 | 18 | |
255a028a MD |
19 | enum lttng_enabler_format_type { |
20 | LTTNG_ENABLER_FORMAT_STAR_GLOB, | |
21 | LTTNG_ENABLER_FORMAT_NAME, | |
22 | }; | |
23 | ||
ac847066 MD |
24 | enum channel_type { |
25 | PER_CPU_CHANNEL, | |
26 | METADATA_CHANNEL, | |
27 | }; | |
28 | ||
255a028a MD |
29 | /* |
30 | * Objects in a linked-list of enablers, owned by an event. | |
31 | */ | |
32 | struct lttng_enabler_ref { | |
33 | struct list_head node; /* enabler ref list */ | |
34 | struct lttng_enabler *ref; /* backward ref */ | |
35 | }; | |
36 | ||
0dba22ad MD |
37 | struct lttng_krp; /* Kretprobe handling */ |
38 | ||
39 | struct 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 | ||
46 | struct lttng_kprobe { | |
47 | struct kprobe kp; | |
48 | char *symbol_name; | |
49 | }; | |
50 | ||
51 | struct lttng_uprobe { | |
52 | struct inode *inode; | |
53 | struct list_head head; | |
54 | }; | |
55 | ||
56 | enum lttng_syscall_entryexit { | |
57 | LTTNG_SYSCALL_ENTRY, | |
58 | LTTNG_SYSCALL_EXIT, | |
59 | }; | |
60 | ||
61 | enum lttng_syscall_abi { | |
62 | LTTNG_SYSCALL_ABI_NATIVE, | |
63 | LTTNG_SYSCALL_ABI_COMPAT, | |
64 | }; | |
65 | ||
a67ba386 MD |
66 | struct 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; | |
dc7350d6 | 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 | ||
96 | struct 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 | ||
107 | struct 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 | ||
ac847066 MD |
120 | struct 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 | ||
141 | struct 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; | |
4071a628 | 152 | struct lttng_kernel_ring_buffer_channel *rb_chan; /* Ring buffer channel */ |
ac847066 MD |
153 | unsigned int metadata_dumped:1; |
154 | struct list_head node; /* Channel list in session */ | |
155 | struct lttng_transport *transport; | |
156 | }; | |
157 | ||
8a445457 MD |
158 | enum lttng_kernel_bytecode_interpreter_ret { |
159 | LTTNG_KERNEL_BYTECODE_INTERPRETER_ERROR = -1, | |
160 | LTTNG_KERNEL_BYTECODE_INTERPRETER_OK = 0, | |
161 | }; | |
162 | ||
163 | enum lttng_kernel_bytecode_filter_result { | |
164 | LTTNG_KERNEL_BYTECODE_FILTER_ACCEPT = 0, | |
165 | LTTNG_KERNEL_BYTECODE_FILTER_REJECT = 1, | |
166 | }; | |
167 | ||
168 | struct lttng_kernel_bytecode_filter_ctx { | |
169 | enum lttng_kernel_bytecode_filter_result result; | |
170 | }; | |
171 | ||
478a7793 MD |
172 | struct lttng_interpreter_output; |
173 | ||
174 | enum lttng_kernel_bytecode_type { | |
175 | LTTNG_KERNEL_BYTECODE_TYPE_FILTER, | |
176 | LTTNG_KERNEL_BYTECODE_TYPE_CAPTURE, | |
177 | }; | |
178 | ||
179 | struct 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 | ||
191 | struct 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 | ||
b8b4704b MD |
204 | /* |
205 | * Enabler field, within whatever object is enabling an event. Target of | |
206 | * backward reference. | |
207 | */ | |
208 | struct lttng_enabler { | |
209 | enum lttng_enabler_format_type format_type; | |
210 | ||
9906b046 | 211 | /* head list of struct lttng_kernel_bytecode_node */ |
b8b4704b 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 | ||
220 | struct lttng_event_enabler { | |
221 | struct lttng_enabler base; | |
222 | struct list_head node; /* per-session list of enablers */ | |
ac847066 | 223 | struct lttng_kernel_channel_buffer *chan; |
b8b4704b MD |
224 | }; |
225 | ||
226 | struct 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 | ||
9906b046 | 232 | /* head list of struct lttng_kernel_bytecode_node */ |
b8b4704b MD |
233 | struct list_head capture_bytecode_head; |
234 | uint64_t num_captures; | |
235 | }; | |
236 | ||
7207017d MD |
237 | struct 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 | */ | |
249 | struct 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 | ||
263 | struct lttng_kernel_ctx_field { | |
264 | const struct lttng_kernel_event_field *event_field; | |
346cb5ee | 265 | size_t (*get_size)(void *priv, struct lttng_kernel_probe_ctx *probe_ctx, |
7207017d | 266 | size_t offset); |
346cb5ee | 267 | void (*record)(void *priv, struct lttng_kernel_probe_ctx *probe_ctx, |
e27e4381 | 268 | struct lttng_kernel_ring_buffer_ctx *ctx, |
ac847066 | 269 | struct lttng_kernel_channel_buffer *chan); |
346cb5ee | 270 | void (*get_value)(void *priv, struct lttng_kernel_probe_ctx *probe_ctx, |
7207017d MD |
271 | struct lttng_ctx_value *value); |
272 | void (*destroy)(void *priv); | |
273 | void *priv; | |
274 | }; | |
275 | ||
276 | struct 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 | ||
a8605b84 MD |
283 | struct 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 | ||
9a4deef1 MD |
295 | struct 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 | ||
da1fe18f MD |
308 | struct lttng_kernel_channel_buffer_ops_private { |
309 | struct lttng_kernel_channel_buffer_ops *pub; /* Public channel buffer ops interface */ | |
310 | ||
4071a628 | 311 | struct lttng_kernel_ring_buffer_channel *(*channel_create)(const char *name, |
da1fe18f MD |
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); | |
4071a628 MD |
317 | void (*channel_destroy)(struct lttng_kernel_ring_buffer_channel *chan); |
318 | struct lib_ring_buffer *(*buffer_read_open)(struct lttng_kernel_ring_buffer_channel *chan); | |
319 | int (*buffer_has_read_closed_stream)(struct lttng_kernel_ring_buffer_channel *chan); | |
da1fe18f MD |
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 | */ | |
4071a628 MD |
326 | size_t (*packet_avail_size)(struct lttng_kernel_ring_buffer_channel *chan); |
327 | wait_queue_head_t *(*get_writer_buf_wait_queue)(struct lttng_kernel_ring_buffer_channel *chan, int cpu); | |
328 | wait_queue_head_t *(*get_hp_wait_queue)(struct lttng_kernel_ring_buffer_channel *chan); | |
329 | int (*is_finalized)(struct lttng_kernel_ring_buffer_channel *chan); | |
330 | int (*is_disabled)(struct lttng_kernel_ring_buffer_channel *chan); | |
da1fe18f MD |
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 | ||
e71f3cec MD |
360 | struct 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 | ||
382 | struct 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 | ||
fc2778a7 MD |
390 | #define LTTNG_EVENT_NOTIFIER_HT_BITS 12 |
391 | #define LTTNG_EVENT_NOTIFIER_HT_SIZE (1U << LTTNG_EVENT_NOTIFIER_HT_BITS) | |
392 | ||
393 | struct lttng_event_notifier_ht { | |
394 | struct hlist_head table[LTTNG_EVENT_NOTIFIER_HT_SIZE]; | |
395 | }; | |
396 | ||
e71f3cec MD |
397 | struct 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; | |
4071a628 | 406 | struct lttng_kernel_ring_buffer_channel *chan; /* Ring buffer channel for event notifier group. */ |
e71f3cec MD |
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 | ||
434 | struct lttng_transport { | |
435 | char *name; | |
436 | struct module *owner; | |
437 | struct list_head node; | |
438 | struct lttng_kernel_channel_buffer_ops ops; | |
439 | }; | |
440 | ||
441 | struct lttng_counter_transport { | |
442 | char *name; | |
443 | struct module *owner; | |
444 | struct list_head node; | |
445 | struct lttng_counter_ops ops; | |
446 | }; | |
447 | ||
fc2778a7 MD |
448 | #define LTTNG_EVENT_HT_BITS 12 |
449 | #define LTTNG_EVENT_HT_SIZE (1U << LTTNG_EVENT_HT_BITS) | |
450 | ||
451 | struct lttng_event_ht { | |
452 | struct hlist_head table[LTTNG_EVENT_HT_SIZE]; | |
453 | }; | |
454 | ||
a40e3229 MD |
455 | struct 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 | ||
6e662c28 MD |
476 | struct lttng_id_hash_node { |
477 | struct hlist_node hlist; | |
478 | int id; | |
479 | }; | |
480 | ||
a2fa977a MD |
481 | enum 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 | ||
492 | struct 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 | ||
7207017d MD |
499 | extern struct lttng_kernel_ctx *lttng_static_ctx; |
500 | ||
437d5aa5 MD |
501 | static inline |
502 | const 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 | ||
509 | static inline | |
510 | const 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 | ||
517 | static inline | |
518 | const 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 | ||
525 | static inline | |
526 | const 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 | ||
533 | static inline | |
534 | const 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 | ||
541 | static inline | |
542 | const 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 | ||
549 | static inline | |
550 | const 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 | ||
557 | static 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 |
575 | int lttng_kernel_interpret_event_filter(const struct lttng_kernel_event_common *event, |
576 | const char *interpreter_stack_data, | |
346cb5ee | 577 | struct lttng_kernel_probe_ctx *probe_ctx, |
8a445457 MD |
578 | void *event_filter_ctx); |
579 | ||
b8b4704b MD |
580 | static inline |
581 | struct lttng_enabler *lttng_event_enabler_as_enabler( | |
582 | struct lttng_event_enabler *event_enabler) | |
583 | { | |
584 | return &event_enabler->base; | |
585 | } | |
586 | ||
587 | static inline | |
588 | struct 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 | ||
7207017d MD |
594 | int lttng_context_init(void); |
595 | void lttng_context_exit(void); | |
596 | int lttng_kernel_context_append(struct lttng_kernel_ctx **ctx_p, | |
597 | const struct lttng_kernel_ctx_field *f); | |
598 | void lttng_kernel_context_remove_last(struct lttng_kernel_ctx **ctx_p); | |
599 | struct lttng_kernel_ctx_field *lttng_kernel_get_context_field_from_index(struct lttng_kernel_ctx *ctx, | |
600 | size_t index); | |
601 | int lttng_kernel_find_context(struct lttng_kernel_ctx *ctx, const char *name); | |
602 | int lttng_kernel_get_context_index(struct lttng_kernel_ctx *ctx, const char *name); | |
603 | void lttng_kernel_destroy_context(struct lttng_kernel_ctx *ctx); | |
604 | int lttng_add_pid_to_ctx(struct lttng_kernel_ctx **ctx); | |
605 | int lttng_add_cpu_id_to_ctx(struct lttng_kernel_ctx **ctx); | |
606 | int lttng_add_procname_to_ctx(struct lttng_kernel_ctx **ctx); | |
607 | int lttng_add_prio_to_ctx(struct lttng_kernel_ctx **ctx); | |
608 | int lttng_add_nice_to_ctx(struct lttng_kernel_ctx **ctx); | |
609 | int lttng_add_vpid_to_ctx(struct lttng_kernel_ctx **ctx); | |
610 | int lttng_add_tid_to_ctx(struct lttng_kernel_ctx **ctx); | |
611 | int lttng_add_vtid_to_ctx(struct lttng_kernel_ctx **ctx); | |
612 | int lttng_add_ppid_to_ctx(struct lttng_kernel_ctx **ctx); | |
613 | int lttng_add_vppid_to_ctx(struct lttng_kernel_ctx **ctx); | |
614 | int lttng_add_hostname_to_ctx(struct lttng_kernel_ctx **ctx); | |
615 | int lttng_add_interruptible_to_ctx(struct lttng_kernel_ctx **ctx); | |
616 | int lttng_add_need_reschedule_to_ctx(struct lttng_kernel_ctx **ctx); | |
617 | #if defined(CONFIG_PREEMPT_RT_FULL) || defined(CONFIG_PREEMPT) | |
618 | int lttng_add_preemptible_to_ctx(struct lttng_kernel_ctx **ctx); | |
619 | #else | |
620 | static inline | |
621 | int lttng_add_preemptible_to_ctx(struct lttng_kernel_ctx **ctx) | |
622 | { | |
623 | return -ENOSYS; | |
624 | } | |
625 | #endif | |
626 | #ifdef CONFIG_PREEMPT_RT_FULL | |
627 | int lttng_add_migratable_to_ctx(struct lttng_kernel_ctx **ctx); | |
628 | #else | |
629 | static inline | |
630 | int lttng_add_migratable_to_ctx(struct lttng_kernel_ctx **ctx) | |
631 | { | |
632 | return -ENOSYS; | |
633 | } | |
634 | #endif | |
635 | ||
636 | int 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)) | |
641 | int lttng_add_cgroup_ns_to_ctx(struct lttng_kernel_ctx **ctx); | |
642 | #else | |
643 | static inline | |
644 | int 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)) | |
652 | int lttng_add_ipc_ns_to_ctx(struct lttng_kernel_ctx **ctx); | |
653 | #else | |
654 | static inline | |
655 | int 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)) | |
663 | int lttng_add_mnt_ns_to_ctx(struct lttng_kernel_ctx **ctx); | |
664 | #else | |
665 | static inline | |
666 | int 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)) | |
674 | int lttng_add_net_ns_to_ctx(struct lttng_kernel_ctx **ctx); | |
675 | #else | |
676 | static inline | |
677 | int 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)) | |
685 | int lttng_add_pid_ns_to_ctx(struct lttng_kernel_ctx **ctx); | |
686 | #else | |
687 | static inline | |
688 | int 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)) | |
696 | int lttng_add_user_ns_to_ctx(struct lttng_kernel_ctx **ctx); | |
697 | #else | |
698 | static inline | |
699 | int 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)) | |
707 | int lttng_add_uts_ns_to_ctx(struct lttng_kernel_ctx **ctx); | |
708 | #else | |
709 | static inline | |
710 | int 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)) | |
718 | int lttng_add_time_ns_to_ctx(struct lttng_kernel_ctx **ctx); | |
719 | #else | |
720 | static inline | |
721 | int lttng_add_time_ns_to_ctx(struct lttng_kernel_ctx **ctx) | |
722 | { | |
723 | return -ENOSYS; | |
724 | } | |
725 | #endif | |
726 | ||
727 | int lttng_add_uid_to_ctx(struct lttng_kernel_ctx **ctx); | |
728 | int lttng_add_euid_to_ctx(struct lttng_kernel_ctx **ctx); | |
729 | int lttng_add_suid_to_ctx(struct lttng_kernel_ctx **ctx); | |
730 | int lttng_add_gid_to_ctx(struct lttng_kernel_ctx **ctx); | |
731 | int lttng_add_egid_to_ctx(struct lttng_kernel_ctx **ctx); | |
732 | int lttng_add_sgid_to_ctx(struct lttng_kernel_ctx **ctx); | |
733 | int lttng_add_vuid_to_ctx(struct lttng_kernel_ctx **ctx); | |
734 | int lttng_add_veuid_to_ctx(struct lttng_kernel_ctx **ctx); | |
735 | int lttng_add_vsuid_to_ctx(struct lttng_kernel_ctx **ctx); | |
736 | int lttng_add_vgid_to_ctx(struct lttng_kernel_ctx **ctx); | |
737 | int lttng_add_vegid_to_ctx(struct lttng_kernel_ctx **ctx); | |
738 | int lttng_add_vsgid_to_ctx(struct lttng_kernel_ctx **ctx); | |
739 | ||
740 | #if defined(CONFIG_PERF_EVENTS) | |
741 | int lttng_add_perf_counter_to_ctx(uint32_t type, | |
742 | uint64_t config, | |
743 | const char *name, | |
744 | struct lttng_kernel_ctx **ctx); | |
745 | int lttng_cpuhp_perf_counter_online(unsigned int cpu, | |
746 | struct lttng_cpuhp_node *node); | |
747 | int lttng_cpuhp_perf_counter_dead(unsigned int cpu, | |
748 | struct lttng_cpuhp_node *node); | |
749 | #else | |
750 | static inline | |
751 | int 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 | } | |
758 | static inline | |
759 | int lttng_cpuhp_perf_counter_online(unsigned int cpu, | |
760 | struct lttng_cpuhp_node *node) | |
761 | { | |
762 | return 0; | |
763 | } | |
764 | static inline | |
765 | int lttng_cpuhp_perf_counter_dead(unsigned int cpu, | |
766 | struct lttng_cpuhp_node *node) | |
767 | { | |
768 | return 0; | |
769 | } | |
770 | #endif | |
771 | ||
255a028a MD |
772 | struct lttng_event_enabler *lttng_event_enabler_create( |
773 | enum lttng_enabler_format_type format_type, | |
774 | struct lttng_kernel_abi_event *event_param, | |
ac847066 | 775 | struct lttng_kernel_channel_buffer *chan); |
255a028a MD |
776 | |
777 | int lttng_event_enabler_enable(struct lttng_event_enabler *event_enabler); | |
778 | int lttng_event_enabler_disable(struct lttng_event_enabler *event_enabler); | |
779 | struct 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 | ||
784 | int lttng_event_notifier_enabler_enable( | |
785 | struct lttng_event_notifier_enabler *event_notifier_enabler); | |
786 | int lttng_event_notifier_enabler_disable( | |
787 | struct lttng_event_notifier_enabler *event_notifier_enabler); | |
788 | ||
789 | int lttng_event_enabler_attach_filter_bytecode(struct lttng_event_enabler *event_enabler, | |
790 | struct lttng_kernel_abi_filter_bytecode __user *bytecode); | |
791 | int 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); | |
794 | int 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 | ||
798 | int lttng_desc_match_enabler(const struct lttng_kernel_event_desc *desc, | |
799 | struct lttng_enabler *enabler); | |
800 | ||
801 | void 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) | |
807 | int lttng_syscalls_register_event(struct lttng_event_enabler *event_enabler); | |
ac847066 MD |
808 | int lttng_syscalls_unregister_channel(struct lttng_kernel_channel_buffer *chan); |
809 | int lttng_syscalls_destroy_event(struct lttng_kernel_channel_buffer *chan); | |
255a028a | 810 | int lttng_syscall_filter_enable_event( |
ac847066 | 811 | struct lttng_kernel_channel_buffer *chan, |
255a028a MD |
812 | struct lttng_kernel_event_recorder *event); |
813 | int lttng_syscall_filter_disable_event( | |
ac847066 | 814 | struct lttng_kernel_channel_buffer *chan, |
255a028a MD |
815 | struct lttng_kernel_event_recorder *event); |
816 | ||
ac847066 | 817 | long lttng_channel_syscall_mask(struct lttng_kernel_channel_buffer *channel, |
255a028a MD |
818 | struct lttng_kernel_abi_syscall_mask __user *usyscall_mask); |
819 | ||
820 | int lttng_syscalls_register_event_notifier( | |
821 | struct lttng_event_notifier_enabler *event_notifier_enabler); | |
822 | int lttng_syscalls_create_matching_event_notifiers( | |
823 | struct lttng_event_notifier_enabler *event_notifier_enabler); | |
824 | int lttng_syscalls_unregister_event_notifier_group(struct lttng_event_notifier_group *group); | |
825 | int lttng_syscall_filter_enable_event_notifier(struct lttng_kernel_event_notifier *event_notifier); | |
826 | int lttng_syscall_filter_disable_event_notifier(struct lttng_kernel_event_notifier *event_notifier); | |
827 | #else | |
828 | static inline int lttng_syscalls_register_event( | |
829 | struct lttng_event_enabler *event_enabler) | |
830 | { | |
831 | return -ENOSYS; | |
832 | } | |
833 | ||
ac847066 | 834 | static inline int lttng_syscalls_unregister_channel(struct lttng_kernel_channel_buffer *chan) |
255a028a MD |
835 | { |
836 | return 0; | |
837 | } | |
838 | ||
ac847066 | 839 | static inline int lttng_syscalls_destroy(struct lttng_kernel_channel_buffer *chan) |
255a028a MD |
840 | { |
841 | return 0; | |
842 | } | |
843 | ||
ac847066 | 844 | static inline int lttng_syscall_filter_enable_event(struct lttng_kernel_channel_buffer *chan, |
255a028a MD |
845 | struct lttng_kernel_event_recorder *event); |
846 | { | |
847 | return -ENOSYS; | |
848 | } | |
849 | ||
ac847066 | 850 | static inline int lttng_syscall_filter_disable_event(struct lttng_kernel_channel_buffer *chan, |
255a028a MD |
851 | struct lttng_kernel_event_recorder *event); |
852 | { | |
853 | return -ENOSYS; | |
854 | } | |
855 | ||
ac847066 | 856 | static inline long lttng_channel_syscall_mask(struct lttng_kernel_channel_buffer *channel, |
255a028a MD |
857 | struct lttng_kernel_syscall_mask __user *usyscall_mask) |
858 | { | |
859 | return -ENOSYS; | |
860 | } | |
861 | ||
862 | static inline int lttng_syscalls_register_event_notifier( | |
863 | struct lttng_event_notifier_group *group) | |
864 | { | |
865 | return -ENOSYS; | |
866 | } | |
867 | ||
868 | static inline int lttng_syscalls_unregister_event_notifier_group( | |
869 | struct lttng_event_notifier_group *group) | |
870 | { | |
871 | return 0; | |
872 | } | |
873 | ||
874 | static 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 | ||
881 | static inline int lttng_syscall_filter_disable_event_notifier( | |
882 | struct lttng_event_notifier_group *group, | |
883 | const char *name) | |
884 | { | |
885 | return -ENOSYS; | |
886 | } | |
7207017d | 887 | |
255a028a | 888 | #endif |
7207017d | 889 | |
cb9a4b67 MD |
890 | #ifdef CONFIG_KPROBES |
891 | int 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); | |
896 | void lttng_kprobes_unregister_event(struct lttng_kernel_event_recorder *event); | |
897 | void lttng_kprobes_destroy_event_private(struct lttng_kernel_event_recorder *event); | |
898 | int 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); | |
902 | void lttng_kprobes_unregister_event_notifier(struct lttng_kernel_event_notifier *event_notifier); | |
903 | void lttng_kprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier *event_notifier); | |
904 | #else | |
905 | static inline | |
906 | int 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 | ||
915 | static inline | |
916 | void lttng_kprobes_unregister_event(struct lttng_kernel_event_recorder *event) | |
917 | { | |
918 | } | |
919 | ||
920 | static inline | |
921 | void lttng_kprobes_destroy_event_private(struct lttng_kernel_event_recorder *event) | |
922 | { | |
923 | } | |
924 | ||
925 | static inline | |
926 | int 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 | ||
934 | static inline | |
935 | void lttng_kprobes_unregister_event_notifier(struct lttng_kernel_event_notifier *event_notifier) | |
936 | { | |
937 | } | |
938 | ||
939 | static inline | |
940 | void lttng_kprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier *event_notifier) | |
941 | { | |
942 | } | |
943 | #endif | |
944 | ||
945 | int lttng_event_add_callsite(struct lttng_kernel_event_common *event, | |
946 | struct lttng_kernel_abi_event_callsite __user *callsite); | |
947 | ||
948 | #ifdef CONFIG_UPROBES | |
949 | int lttng_uprobes_register_event(const char *name, | |
950 | int fd, struct lttng_kernel_event_recorder *event); | |
951 | int lttng_uprobes_event_add_callsite(struct lttng_kernel_event_common *event, | |
952 | struct lttng_kernel_abi_event_callsite __user *callsite); | |
953 | void lttng_uprobes_unregister_event(struct lttng_kernel_event_recorder *event); | |
954 | void lttng_uprobes_destroy_event_private(struct lttng_kernel_event_recorder *event); | |
955 | int lttng_uprobes_register_event_notifier(const char *name, | |
956 | int fd, struct lttng_kernel_event_notifier *event_notifier); | |
957 | void lttng_uprobes_unregister_event_notifier(struct lttng_kernel_event_notifier *event_notifier); | |
958 | void lttng_uprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier *event_notifier); | |
959 | #else | |
960 | static inline | |
961 | int lttng_uprobes_register_event(const char *name, | |
962 | int fd, struct lttng_kernel_event_recorder *event) | |
963 | { | |
964 | return -ENOSYS; | |
965 | } | |
966 | ||
967 | static inline | |
968 | int 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 | ||
974 | static inline | |
975 | void lttng_uprobes_unregister_event(struct lttng_kernel_event_recorder *event) | |
976 | { | |
977 | } | |
978 | ||
979 | static inline | |
980 | void lttng_uprobes_destroy_event_private(struct lttng_kernel_event_recorder *event) | |
981 | { | |
982 | } | |
983 | ||
984 | static inline | |
985 | int lttng_uprobes_register_event_notifier(const char *name, | |
986 | int fd, struct lttng_kernel_event_notifier *event_notifier) | |
987 | { | |
988 | return -ENOSYS; | |
989 | } | |
990 | ||
991 | static inline | |
992 | void lttng_uprobes_unregister_event_notifier(struct lttng_kernel_event_notifier *event_notifier) | |
993 | { | |
994 | } | |
995 | ||
996 | static inline | |
997 | void lttng_uprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier *event_notifier) | |
998 | { | |
999 | } | |
1000 | #endif | |
1001 | ||
1002 | #ifdef CONFIG_KRETPROBES | |
1003 | int 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); | |
1009 | void lttng_kretprobes_unregister(struct lttng_kernel_event_recorder *event); | |
1010 | void lttng_kretprobes_destroy_private(struct lttng_kernel_event_recorder *event); | |
1011 | int lttng_kretprobes_event_enable_state(struct lttng_kernel_event_common *event, | |
1012 | int enable); | |
1013 | #else | |
1014 | static inline | |
1015 | int 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 | ||
1025 | static inline | |
1026 | void lttng_kretprobes_unregister(struct lttng_kernel_event_recorder *event) | |
1027 | { | |
1028 | } | |
1029 | ||
1030 | static inline | |
1031 | void lttng_kretprobes_destroy_private(struct lttng_kernel_event_recorder *event) | |
1032 | { | |
1033 | } | |
1034 | ||
1035 | static inline | |
1036 | int lttng_kretprobes_event_enable_state(struct lttng_kernel_event_common *event, | |
1037 | int enable) | |
1038 | { | |
1039 | return -ENOSYS; | |
1040 | } | |
1041 | #endif | |
1042 | ||
17f90b04 MD |
1043 | void lttng_lock_sessions(void); |
1044 | void lttng_unlock_sessions(void); | |
1045 | ||
1046 | struct list_head *lttng_get_probe_list_head(void); | |
1047 | ||
1048 | int lttng_fix_pending_events(void); | |
1049 | int lttng_fix_pending_event_notifiers(void); | |
1050 | int lttng_session_active(void); | |
1051 | bool lttng_event_notifier_active(void); | |
1052 | ||
a40e3229 MD |
1053 | struct lttng_kernel_session *lttng_session_create(void); |
1054 | int lttng_session_enable(struct lttng_kernel_session *session); | |
1055 | int lttng_session_disable(struct lttng_kernel_session *session); | |
1056 | void lttng_session_destroy(struct lttng_kernel_session *session); | |
1057 | int lttng_session_metadata_regenerate(struct lttng_kernel_session *session); | |
1058 | int lttng_session_statedump(struct lttng_kernel_session *session); | |
17f90b04 MD |
1059 | void metadata_cache_destroy(struct kref *kref); |
1060 | ||
1061 | struct lttng_counter *lttng_kernel_counter_create( | |
1062 | const char *counter_transport_name, size_t number_dimensions, | |
1063 | const size_t *dimensions_sizes); | |
1064 | int 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); | |
1067 | int lttng_kernel_counter_aggregate(struct lttng_counter *counter, | |
1068 | const size_t *dimension_indexes, int64_t *val, | |
1069 | bool *overflow, bool *underflow); | |
1070 | int lttng_kernel_counter_clear(struct lttng_counter *counter, | |
1071 | const size_t *dimension_indexes); | |
1072 | struct lttng_event_notifier_group *lttng_event_notifier_group_create(void); | |
1073 | int 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); | |
1076 | void lttng_event_notifier_group_destroy( | |
1077 | struct lttng_event_notifier_group *event_notifier_group); | |
1078 | ||
ac847066 | 1079 | struct lttng_kernel_channel_buffer *lttng_channel_create(struct lttng_kernel_session *session, |
17f90b04 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); | |
ac847066 | 1086 | struct lttng_kernel_channel_buffer *lttng_global_channel_create(struct lttng_kernel_session *session, |
17f90b04 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 | ||
ac847066 MD |
1092 | void lttng_metadata_channel_destroy(struct lttng_kernel_channel_buffer *chan); |
1093 | struct lttng_kernel_event_recorder *lttng_kernel_event_recorder_create(struct lttng_kernel_channel_buffer *chan, | |
17f90b04 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); | |
ac847066 | 1097 | struct lttng_kernel_event_recorder *_lttng_kernel_event_recorder_create(struct lttng_kernel_channel_buffer *chan, |
17f90b04 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); | |
ac847066 | 1101 | struct lttng_kernel_event_recorder *lttng_event_compat_old_create(struct lttng_kernel_channel_buffer *chan, |
17f90b04 MD |
1102 | struct lttng_kernel_abi_old_event *old_event_param, |
1103 | const struct lttng_kernel_event_desc *internal_desc); | |
1104 | ||
1105 | struct 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); | |
1112 | struct 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 | ||
ac847066 MD |
1120 | int lttng_channel_enable(struct lttng_kernel_channel_buffer *channel); |
1121 | int lttng_channel_disable(struct lttng_kernel_channel_buffer *channel); | |
17f90b04 MD |
1122 | int lttng_event_enable(struct lttng_kernel_event_common *event); |
1123 | int lttng_event_disable(struct lttng_kernel_event_common *event); | |
1124 | ||
1125 | void lttng_transport_register(struct lttng_transport *transport); | |
1126 | void lttng_transport_unregister(struct lttng_transport *transport); | |
1127 | ||
1128 | void lttng_counter_transport_register(struct lttng_counter_transport *transport); | |
1129 | void lttng_counter_transport_unregister(struct lttng_counter_transport *transport); | |
1130 | ||
1131 | void synchronize_trace(void); | |
1132 | int lttng_abi_init(void); | |
1133 | int lttng_abi_compat_old_init(void); | |
1134 | void lttng_abi_exit(void); | |
1135 | void lttng_abi_compat_old_exit(void); | |
1136 | ||
1137 | const struct lttng_kernel_event_desc *lttng_event_desc_get(const char *name); | |
1138 | void lttng_event_desc_put(const struct lttng_kernel_event_desc *desc); | |
1139 | int lttng_probes_init(void); | |
1140 | void lttng_probes_exit(void); | |
1141 | ||
1142 | int lttng_metadata_output_channel(struct lttng_metadata_stream *stream, | |
4071a628 | 1143 | struct lttng_kernel_ring_buffer_channel *chan, bool *coherent); |
17f90b04 MD |
1144 | |
1145 | int lttng_id_tracker_get_node_id(const struct lttng_id_hash_node *node); | |
a2fa977a MD |
1146 | int lttng_id_tracker_empty_set(struct lttng_kernel_id_tracker *lf); |
1147 | int lttng_id_tracker_init(struct lttng_kernel_id_tracker *lf, | |
1148 | struct lttng_kernel_session *session, | |
1149 | enum tracker_type type); | |
1150 | void lttng_id_tracker_fini(struct lttng_kernel_id_tracker *lf); | |
1151 | void lttng_id_tracker_destroy(struct lttng_kernel_id_tracker *lf, bool rcu); | |
1152 | int lttng_id_tracker_add(struct lttng_kernel_id_tracker *lf, int id); | |
1153 | int lttng_id_tracker_del(struct lttng_kernel_id_tracker *lf, int id); | |
17f90b04 | 1154 | |
a40e3229 | 1155 | int lttng_session_track_id(struct lttng_kernel_session *session, |
17f90b04 | 1156 | enum tracker_type tracker_type, int id); |
a40e3229 | 1157 | int lttng_session_untrack_id(struct lttng_kernel_session *session, |
17f90b04 MD |
1158 | enum tracker_type tracker_type, int id); |
1159 | ||
a40e3229 | 1160 | int lttng_session_list_tracker_ids(struct lttng_kernel_session *session, |
17f90b04 MD |
1161 | enum tracker_type tracker_type); |
1162 | ||
1163 | void lttng_clock_ref(void); | |
1164 | void lttng_clock_unref(void); | |
1165 | ||
1166 | void lttng_free_event_filter_runtime(struct lttng_kernel_event_common *event); | |
1167 | ||
1168 | int lttng_probes_init(void); | |
1169 | ||
1170 | int lttng_logger_init(void); | |
1171 | void lttng_logger_exit(void); | |
1172 | ||
a40e3229 | 1173 | extern int lttng_statedump_start(struct lttng_kernel_session *session); |
17f90b04 MD |
1174 | |
1175 | int lttng_calibrate(struct lttng_kernel_abi_calibrate *calibrate); | |
1176 | ||
1177 | extern const struct file_operations lttng_tracepoint_list_fops; | |
1178 | extern const struct file_operations lttng_syscall_list_fops; | |
1179 | ||
7207017d 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 */ |