Commit | Line | Data |
---|---|---|
92bc1e23 MD |
1 | /* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only) |
2 | * | |
3 | * lttng/events-internal.h | |
4 | * | |
5 | * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
6 | */ | |
7 | ||
8 | #ifndef _LTTNG_EVENTS_INTERNAL_H | |
9 | #define _LTTNG_EVENTS_INTERNAL_H | |
10 | ||
c190d76e MJ |
11 | #include <wrapper/compiler_attributes.h> |
12 | ||
437d5aa5 MD |
13 | #include <lttng/events.h> |
14 | ||
344fe0f6 | 15 | struct lttng_syscall_filter; |
7c1ba2ca MD |
16 | struct lttng_metadata_cache; |
17 | struct perf_event; | |
18 | struct perf_event_attr; | |
e20c0fec | 19 | struct lttng_kernel_ring_buffer_config; |
344fe0f6 | 20 | |
311e655a MD |
21 | enum lttng_enabler_format_type { |
22 | LTTNG_ENABLER_FORMAT_STAR_GLOB, | |
23 | LTTNG_ENABLER_FORMAT_NAME, | |
24 | }; | |
25 | ||
f7d06400 MD |
26 | enum channel_type { |
27 | PER_CPU_CHANNEL, | |
28 | METADATA_CHANNEL, | |
29 | }; | |
30 | ||
311e655a MD |
31 | /* |
32 | * Objects in a linked-list of enablers, owned by an event. | |
33 | */ | |
34 | struct lttng_enabler_ref { | |
35 | struct list_head node; /* enabler ref list */ | |
8d554755 | 36 | struct lttng_event_enabler_common *ref; /* backward ref */ |
311e655a MD |
37 | }; |
38 | ||
e978f274 MD |
39 | struct lttng_krp; /* Kretprobe handling */ |
40 | ||
41 | struct lttng_uprobe_handler { | |
42 | struct lttng_kernel_event_common *event; | |
43 | loff_t offset; | |
44 | struct uprobe_consumer up_consumer; | |
45 | struct list_head node; | |
46 | }; | |
47 | ||
48 | struct lttng_kprobe { | |
49 | struct kprobe kp; | |
50 | char *symbol_name; | |
51 | }; | |
52 | ||
53 | struct lttng_uprobe { | |
54 | struct inode *inode; | |
55 | struct list_head head; | |
56 | }; | |
57 | ||
58 | enum lttng_syscall_entryexit { | |
59 | LTTNG_SYSCALL_ENTRY, | |
60 | LTTNG_SYSCALL_EXIT, | |
61 | }; | |
62 | ||
63 | enum lttng_syscall_abi { | |
64 | LTTNG_SYSCALL_ABI_NATIVE, | |
65 | LTTNG_SYSCALL_ABI_COMPAT, | |
66 | }; | |
67 | ||
a67ba386 MD |
68 | struct lttng_kernel_event_common_private { |
69 | struct lttng_kernel_event_common *pub; /* Public event interface */ | |
70 | ||
71 | const struct lttng_kernel_event_desc *desc; | |
72 | /* Backward references: list of lttng_enabler_ref (ref to enablers) */ | |
73 | struct list_head enablers_ref_head; | |
74 | int registered; /* has reg'd tracepoint probe */ | |
75 | uint64_t user_token; | |
76 | ||
77 | int has_enablers_without_filter_bytecode; | |
218585b9 | 78 | /* list of struct lttng_kernel_bytecode_runtime, sorted by seqnum */ |
a67ba386 | 79 | struct list_head filter_bytecode_runtime_head; |
19bef247 MD |
80 | |
81 | struct hlist_node hlist_node; /* node in events hash table */ | |
f237aef8 | 82 | struct list_head node; /* node in event list */ |
19bef247 | 83 | |
a67ba386 MD |
84 | enum lttng_kernel_abi_instrumentation instrumentation; |
85 | /* Selected by instrumentation */ | |
86 | union { | |
87 | struct lttng_kprobe kprobe; | |
88 | struct lttng_uprobe uprobe; | |
89 | struct { | |
90 | struct lttng_krp *lttng_krp; | |
91 | char *symbol_name; | |
92 | } kretprobe; | |
93 | struct { | |
94 | enum lttng_syscall_entryexit entryexit; | |
95 | enum lttng_syscall_abi abi; | |
96 | struct hlist_node node; /* chain registered syscall event_notifier */ | |
97 | unsigned int syscall_id; | |
98 | } syscall; | |
99 | } u; | |
100 | }; | |
101 | ||
102 | struct lttng_kernel_event_recorder_private { | |
103 | struct lttng_kernel_event_common_private parent; | |
104 | ||
105 | struct lttng_kernel_event_recorder *pub; /* Public event interface */ | |
a67ba386 MD |
106 | struct lttng_kernel_ctx *ctx; |
107 | unsigned int id; | |
108 | unsigned int metadata_dumped:1; | |
109 | }; | |
110 | ||
111 | struct lttng_kernel_event_notifier_private { | |
112 | struct lttng_kernel_event_common_private parent; | |
113 | ||
114 | struct lttng_kernel_event_notifier *pub; /* Public event notifier interface */ | |
115 | struct lttng_event_notifier_group *group; /* weak ref */ | |
116 | size_t num_captures; /* Needed to allocate the msgpack array. */ | |
117 | uint64_t error_counter_index; | |
a67ba386 | 118 | struct list_head capture_bytecode_runtime_head; |
a67ba386 MD |
119 | }; |
120 | ||
0bb716a8 | 121 | struct lttng_kernel_syscall_table { |
f7d06400 | 122 | unsigned int sys_enter_registered:1, |
0bb716a8 MD |
123 | sys_exit_registered:1; |
124 | ||
125 | struct hlist_head *syscall_dispatch; /* for syscall tracing */ | |
126 | struct hlist_head *compat_syscall_dispatch; | |
127 | struct hlist_head *syscall_exit_dispatch; /* for syscall exit tracing */ | |
128 | struct hlist_head *compat_syscall_exit_dispatch; | |
129 | ||
130 | /* | |
131 | * Combining all unknown syscall events works as long as they | |
132 | * are only matched by "all" syscalls enablers, but will require | |
133 | * a design change when we allow matching by syscall number, for | |
134 | * instance by allocating sc_tables accomodating NR_syscalls | |
135 | * entries. | |
136 | */ | |
137 | struct hlist_head unknown_syscall_dispatch; /* for unknown syscalls */ | |
138 | struct hlist_head compat_unknown_syscall_dispatch; | |
139 | struct hlist_head unknown_syscall_exit_dispatch; | |
140 | struct hlist_head compat_unknown_syscall_exit_dispatch; | |
141 | ||
f7d06400 MD |
142 | struct lttng_syscall_filter *sc_filter; |
143 | int syscall_all_entry; | |
144 | int syscall_all_exit; | |
145 | }; | |
146 | ||
0bb716a8 MD |
147 | struct lttng_kernel_channel_common_private { |
148 | struct lttng_kernel_channel_common *pub; | |
149 | ||
150 | struct file *file; /* File associated to channel */ | |
151 | unsigned int tstate:1; /* Transient enable state */ | |
152 | ||
153 | struct lttng_kernel_syscall_table syscall_table; | |
154 | }; | |
155 | ||
f7d06400 MD |
156 | struct lttng_kernel_channel_buffer_private { |
157 | struct lttng_kernel_channel_common_private parent; | |
158 | ||
159 | struct lttng_kernel_channel_buffer *pub; | |
160 | ||
161 | unsigned int id; /* Channel ID */ | |
162 | unsigned int free_event_id; /* Next event ID to allocate */ | |
163 | int header_type; /* 0: unset, 1: compact, 2: large */ | |
164 | ||
165 | enum channel_type channel_type; | |
166 | struct lttng_kernel_ctx *ctx; | |
860c213b | 167 | struct lttng_kernel_ring_buffer_channel *rb_chan; /* Ring buffer channel */ |
f7d06400 MD |
168 | unsigned int metadata_dumped:1; |
169 | struct list_head node; /* Channel list in session */ | |
170 | struct lttng_transport *transport; | |
171 | }; | |
172 | ||
8a445457 MD |
173 | enum lttng_kernel_bytecode_interpreter_ret { |
174 | LTTNG_KERNEL_BYTECODE_INTERPRETER_ERROR = -1, | |
175 | LTTNG_KERNEL_BYTECODE_INTERPRETER_OK = 0, | |
176 | }; | |
177 | ||
178 | enum lttng_kernel_bytecode_filter_result { | |
179 | LTTNG_KERNEL_BYTECODE_FILTER_ACCEPT = 0, | |
180 | LTTNG_KERNEL_BYTECODE_FILTER_REJECT = 1, | |
181 | }; | |
182 | ||
183 | struct lttng_kernel_bytecode_filter_ctx { | |
184 | enum lttng_kernel_bytecode_filter_result result; | |
185 | }; | |
186 | ||
1efb0502 MD |
187 | struct lttng_interpreter_output; |
188 | ||
189 | enum lttng_kernel_bytecode_type { | |
190 | LTTNG_KERNEL_BYTECODE_TYPE_FILTER, | |
191 | LTTNG_KERNEL_BYTECODE_TYPE_CAPTURE, | |
192 | }; | |
193 | ||
0bb716a8 MD |
194 | enum lttng_kernel_event_enabler_type { |
195 | LTTNG_EVENT_ENABLER_TYPE_RECORDER, | |
196 | LTTNG_EVENT_ENABLER_TYPE_NOTIFIER, | |
197 | }; | |
198 | ||
1efb0502 MD |
199 | struct lttng_kernel_bytecode_node { |
200 | enum lttng_kernel_bytecode_type type; | |
201 | struct list_head node; | |
8d554755 | 202 | struct lttng_event_enabler_common *enabler; |
1efb0502 MD |
203 | struct { |
204 | uint32_t len; | |
205 | uint32_t reloc_offset; | |
206 | uint64_t seqnum; | |
207 | char data[]; | |
208 | } bc; | |
209 | }; | |
210 | ||
211 | struct lttng_kernel_bytecode_runtime { | |
212 | /* Associated bytecode */ | |
213 | enum lttng_kernel_bytecode_type type; | |
214 | struct lttng_kernel_bytecode_node *bc; | |
215 | int (*interpreter_func)(struct lttng_kernel_bytecode_runtime *kernel_bytecode, | |
216 | const char *interpreter_stack_data, | |
217 | struct lttng_kernel_probe_ctx *lttng_probe_ctx, | |
218 | void *caller_ctx); | |
219 | int link_failed; | |
220 | struct list_head node; /* list of bytecode runtime in event */ | |
221 | struct lttng_kernel_ctx *ctx; | |
222 | }; | |
223 | ||
5e08a34f MD |
224 | /* |
225 | * Enabler field, within whatever object is enabling an event. Target of | |
226 | * backward reference. | |
227 | */ | |
8d554755 | 228 | struct lttng_event_enabler_common { |
0bb716a8 | 229 | enum lttng_kernel_event_enabler_type enabler_type; |
5e08a34f MD |
230 | enum lttng_enabler_format_type format_type; |
231 | ||
d64ca521 | 232 | /* head list of struct lttng_kernel_bytecode_node */ |
5e08a34f MD |
233 | struct list_head filter_bytecode_head; |
234 | ||
235 | struct lttng_kernel_abi_event event_param; | |
236 | unsigned int enabled:1; | |
237 | ||
238 | uint64_t user_token; /* User-provided token. */ | |
09710b83 MD |
239 | |
240 | struct list_head node; /* list of enablers */ | |
241 | bool published; /* published in list. */ | |
5e08a34f MD |
242 | }; |
243 | ||
1ae083ba | 244 | struct lttng_event_recorder_enabler { |
5b9817ae | 245 | struct lttng_event_enabler_common parent; |
f7d06400 | 246 | struct lttng_kernel_channel_buffer *chan; |
5e08a34f MD |
247 | }; |
248 | ||
249 | struct lttng_event_notifier_enabler { | |
5b9817ae | 250 | struct lttng_event_enabler_common parent; |
5e08a34f | 251 | uint64_t error_counter_index; |
5e08a34f MD |
252 | struct lttng_event_notifier_group *group; |
253 | ||
d64ca521 | 254 | /* head list of struct lttng_kernel_bytecode_node */ |
5e08a34f MD |
255 | struct list_head capture_bytecode_head; |
256 | uint64_t num_captures; | |
257 | }; | |
258 | ||
0fe45627 MD |
259 | struct lttng_ctx_value { |
260 | union { | |
261 | int64_t s64; | |
262 | const char *str; | |
263 | double d; | |
264 | } u; | |
265 | }; | |
266 | ||
267 | /* | |
268 | * We need to keep this perf counter field separately from struct | |
269 | * lttng_kernel_ctx_field because cpu hotplug needs fixed-location addresses. | |
270 | */ | |
271 | struct lttng_perf_counter_field { | |
272 | #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) | |
273 | struct lttng_cpuhp_node cpuhp_prepare; | |
274 | struct lttng_cpuhp_node cpuhp_online; | |
275 | #else | |
276 | struct notifier_block nb; | |
277 | int hp_enable; | |
278 | #endif | |
279 | struct perf_event_attr *attr; | |
280 | struct perf_event **e; /* per-cpu array */ | |
281 | char *name; | |
282 | struct lttng_kernel_event_field *event_field; | |
283 | }; | |
284 | ||
285 | struct lttng_kernel_ctx_field { | |
286 | const struct lttng_kernel_event_field *event_field; | |
a92e844e | 287 | size_t (*get_size)(void *priv, struct lttng_kernel_probe_ctx *probe_ctx, |
0fe45627 | 288 | size_t offset); |
a92e844e | 289 | void (*record)(void *priv, struct lttng_kernel_probe_ctx *probe_ctx, |
8a57ec02 | 290 | struct lttng_kernel_ring_buffer_ctx *ctx, |
f7d06400 | 291 | struct lttng_kernel_channel_buffer *chan); |
a92e844e | 292 | void (*get_value)(void *priv, struct lttng_kernel_probe_ctx *probe_ctx, |
0fe45627 MD |
293 | struct lttng_ctx_value *value); |
294 | void (*destroy)(void *priv); | |
295 | void *priv; | |
296 | }; | |
297 | ||
298 | struct lttng_kernel_ctx { | |
299 | struct lttng_kernel_ctx_field *fields; | |
300 | unsigned int nr_fields; | |
301 | unsigned int allocated_fields; | |
302 | size_t largest_align; /* in bytes */ | |
303 | }; | |
304 | ||
8a20497f MD |
305 | struct lttng_metadata_cache { |
306 | char *data; /* Metadata cache */ | |
307 | unsigned int cache_alloc; /* Metadata allocated size (bytes) */ | |
308 | unsigned int metadata_written; /* Number of bytes written in metadata cache */ | |
309 | atomic_t producing; /* Metadata being produced (incomplete) */ | |
310 | struct kref refcount; /* Metadata cache usage */ | |
311 | struct list_head metadata_stream; /* Metadata stream list */ | |
312 | uuid_le uuid; /* Trace session unique ID (copy) */ | |
313 | struct mutex lock; /* Produce/consume lock */ | |
314 | uint64_t version; /* Current version of the metadata */ | |
315 | }; | |
316 | ||
a44f47dd MD |
317 | struct lttng_metadata_stream { |
318 | void *priv; /* Ring buffer private data */ | |
319 | struct lttng_metadata_cache *metadata_cache; | |
320 | unsigned int metadata_in; /* Bytes read from the cache */ | |
321 | unsigned int metadata_out; /* Bytes consumed from stream */ | |
322 | int finalized; /* Has channel been finalized */ | |
323 | wait_queue_head_t read_wait; /* Reader buffer-level wait queue */ | |
324 | struct list_head list; /* Stream list */ | |
325 | struct lttng_transport *transport; | |
326 | uint64_t version; /* Current version of the metadata cache */ | |
327 | bool coherent; /* Stream in a coherent state */ | |
328 | }; | |
329 | ||
4a399b76 MD |
330 | struct lttng_kernel_channel_buffer_ops_private { |
331 | struct lttng_kernel_channel_buffer_ops *pub; /* Public channel buffer ops interface */ | |
332 | ||
860c213b | 333 | struct lttng_kernel_ring_buffer_channel *(*channel_create)(const char *name, |
4a399b76 MD |
334 | void *priv, |
335 | void *buf_addr, | |
336 | size_t subbuf_size, size_t num_subbuf, | |
337 | unsigned int switch_timer_interval, | |
338 | unsigned int read_timer_interval); | |
860c213b | 339 | void (*channel_destroy)(struct lttng_kernel_ring_buffer_channel *chan); |
e20c0fec | 340 | struct lttng_kernel_ring_buffer *(*buffer_read_open)(struct lttng_kernel_ring_buffer_channel *chan); |
860c213b | 341 | int (*buffer_has_read_closed_stream)(struct lttng_kernel_ring_buffer_channel *chan); |
e20c0fec | 342 | void (*buffer_read_close)(struct lttng_kernel_ring_buffer *buf); |
4a399b76 MD |
343 | /* |
344 | * packet_avail_size returns the available size in the current | |
345 | * packet. Note that the size returned is only a hint, since it | |
346 | * may change due to concurrent writes. | |
347 | */ | |
860c213b MD |
348 | size_t (*packet_avail_size)(struct lttng_kernel_ring_buffer_channel *chan); |
349 | wait_queue_head_t *(*get_writer_buf_wait_queue)(struct lttng_kernel_ring_buffer_channel *chan, int cpu); | |
350 | wait_queue_head_t *(*get_hp_wait_queue)(struct lttng_kernel_ring_buffer_channel *chan); | |
351 | int (*is_finalized)(struct lttng_kernel_ring_buffer_channel *chan); | |
352 | int (*is_disabled)(struct lttng_kernel_ring_buffer_channel *chan); | |
e20c0fec MD |
353 | int (*timestamp_begin) (const struct lttng_kernel_ring_buffer_config *config, |
354 | struct lttng_kernel_ring_buffer *bufb, | |
4a399b76 | 355 | uint64_t *timestamp_begin); |
e20c0fec MD |
356 | int (*timestamp_end) (const struct lttng_kernel_ring_buffer_config *config, |
357 | struct lttng_kernel_ring_buffer *bufb, | |
4a399b76 | 358 | uint64_t *timestamp_end); |
e20c0fec MD |
359 | int (*events_discarded) (const struct lttng_kernel_ring_buffer_config *config, |
360 | struct lttng_kernel_ring_buffer *bufb, | |
4a399b76 | 361 | uint64_t *events_discarded); |
e20c0fec MD |
362 | int (*content_size) (const struct lttng_kernel_ring_buffer_config *config, |
363 | struct lttng_kernel_ring_buffer *bufb, | |
4a399b76 | 364 | uint64_t *content_size); |
e20c0fec MD |
365 | int (*packet_size) (const struct lttng_kernel_ring_buffer_config *config, |
366 | struct lttng_kernel_ring_buffer *bufb, | |
4a399b76 | 367 | uint64_t *packet_size); |
e20c0fec MD |
368 | int (*stream_id) (const struct lttng_kernel_ring_buffer_config *config, |
369 | struct lttng_kernel_ring_buffer *bufb, | |
4a399b76 | 370 | uint64_t *stream_id); |
e20c0fec MD |
371 | int (*current_timestamp) (const struct lttng_kernel_ring_buffer_config *config, |
372 | struct lttng_kernel_ring_buffer *bufb, | |
4a399b76 | 373 | uint64_t *ts); |
e20c0fec MD |
374 | int (*sequence_number) (const struct lttng_kernel_ring_buffer_config *config, |
375 | struct lttng_kernel_ring_buffer *bufb, | |
4a399b76 | 376 | uint64_t *seq); |
e20c0fec MD |
377 | int (*instance_id) (const struct lttng_kernel_ring_buffer_config *config, |
378 | struct lttng_kernel_ring_buffer *bufb, | |
4a399b76 MD |
379 | uint64_t *id); |
380 | }; | |
381 | ||
b0315544 MD |
382 | struct lttng_counter_ops { |
383 | struct lib_counter *(*counter_create)(size_t nr_dimensions, | |
384 | const size_t *max_nr_elem, /* for each dimension */ | |
385 | int64_t global_sum_step); | |
386 | void (*counter_destroy)(struct lib_counter *counter); | |
387 | int (*counter_add)(struct lib_counter *counter, const size_t *dimension_indexes, | |
388 | int64_t v); | |
389 | /* | |
390 | * counter_read reads a specific cpu's counter if @cpu >= 0, or | |
391 | * the global aggregation counter if @cpu == -1. | |
392 | */ | |
393 | int (*counter_read)(struct lib_counter *counter, const size_t *dimension_indexes, int cpu, | |
394 | int64_t *value, bool *overflow, bool *underflow); | |
395 | /* | |
396 | * counter_aggregate returns the total sum of all per-cpu counters and | |
397 | * the global aggregation counter. | |
398 | */ | |
399 | int (*counter_aggregate)(struct lib_counter *counter, const size_t *dimension_indexes, | |
400 | int64_t *value, bool *overflow, bool *underflow); | |
401 | int (*counter_clear)(struct lib_counter *counter, const size_t *dimension_indexes); | |
402 | }; | |
403 | ||
404 | struct lttng_counter { | |
405 | struct file *file; /* File associated to counter. */ | |
406 | struct file *owner; | |
407 | struct lttng_counter_transport *transport; | |
408 | struct lib_counter *counter; | |
409 | struct lttng_counter_ops *ops; | |
410 | }; | |
411 | ||
33af697f MD |
412 | #define LTTNG_EVENT_HT_BITS 12 |
413 | #define LTTNG_EVENT_HT_SIZE (1U << LTTNG_EVENT_HT_BITS) | |
9190fb56 | 414 | |
33af697f MD |
415 | struct lttng_event_ht { |
416 | struct hlist_head table[LTTNG_EVENT_HT_SIZE]; | |
9190fb56 MD |
417 | }; |
418 | ||
b0315544 MD |
419 | struct lttng_event_notifier_group { |
420 | struct file *file; /* File associated to event notifier group */ | |
421 | struct file *notif_file; /* File used to expose notifications to userspace. */ | |
422 | struct list_head node; /* event notifier group list */ | |
423 | struct list_head enablers_head; /* List of enablers */ | |
424 | struct list_head event_notifiers_head; /* List of event notifier */ | |
33af697f | 425 | struct lttng_event_ht events_ht; /* Hash table of event notifiers */ |
b0315544 MD |
426 | struct lttng_kernel_channel_buffer_ops *ops; |
427 | struct lttng_transport *transport; | |
860c213b | 428 | struct lttng_kernel_ring_buffer_channel *chan; /* Ring buffer channel for event notifier group. */ |
e20c0fec | 429 | struct lttng_kernel_ring_buffer *buf; /* Ring buffer for event notifier group. */ |
b0315544 MD |
430 | wait_queue_head_t read_wait; |
431 | struct irq_work wakeup_pending; /* Pending wakeup irq work. */ | |
b0315544 | 432 | |
0bb716a8 | 433 | struct lttng_kernel_syscall_table syscall_table; |
b0315544 MD |
434 | |
435 | struct lttng_counter *error_counter; | |
436 | size_t error_counter_len; | |
437 | }; | |
438 | ||
439 | struct lttng_transport { | |
440 | char *name; | |
441 | struct module *owner; | |
442 | struct list_head node; | |
443 | struct lttng_kernel_channel_buffer_ops ops; | |
444 | }; | |
445 | ||
446 | struct lttng_counter_transport { | |
447 | char *name; | |
448 | struct module *owner; | |
449 | struct list_head node; | |
450 | struct lttng_counter_ops ops; | |
451 | }; | |
452 | ||
8cdc1a81 MD |
453 | struct lttng_kernel_session_private { |
454 | struct lttng_kernel_session *pub; /* Public session interface */ | |
455 | ||
456 | int been_active; /* Has trace session been active ? */ | |
457 | struct file *file; /* File associated to session */ | |
458 | struct list_head chan; /* Channel list head */ | |
459 | struct list_head events; /* Event list head */ | |
460 | struct list_head list; /* Session list */ | |
461 | unsigned int free_chan_id; /* Next chan ID to allocate */ | |
462 | uuid_le uuid; /* Trace session unique ID */ | |
463 | struct lttng_metadata_cache *metadata_cache; | |
464 | unsigned int metadata_dumped:1, | |
465 | tstate:1; /* Transient enable state */ | |
466 | /* List of event enablers */ | |
467 | struct list_head enablers_head; | |
468 | /* Hash table of events */ | |
469 | struct lttng_event_ht events_ht; | |
470 | char name[LTTNG_KERNEL_ABI_SESSION_NAME_LEN]; | |
471 | char creation_time[LTTNG_KERNEL_ABI_SESSION_CREATION_TIME_ISO8601_LEN]; | |
472 | }; | |
473 | ||
fc66bf6a MD |
474 | struct lttng_id_hash_node { |
475 | struct hlist_node hlist; | |
476 | int id; | |
477 | }; | |
478 | ||
8c0393c3 MD |
479 | enum tracker_type { |
480 | TRACKER_PID, | |
481 | TRACKER_VPID, | |
482 | TRACKER_UID, | |
483 | TRACKER_VUID, | |
484 | TRACKER_GID, | |
485 | TRACKER_VGID, | |
486 | ||
487 | TRACKER_UNKNOWN, | |
488 | }; | |
489 | ||
490 | struct lttng_kernel_id_tracker_private { | |
491 | struct lttng_kernel_id_tracker *pub; /* Public interface */ | |
492 | ||
493 | struct lttng_kernel_session *session; | |
494 | enum tracker_type tracker_type; | |
495 | }; | |
496 | ||
0fe45627 MD |
497 | extern struct lttng_kernel_ctx *lttng_static_ctx; |
498 | ||
437d5aa5 MD |
499 | static inline |
500 | const struct lttng_kernel_type_integer *lttng_kernel_get_type_integer(const struct lttng_kernel_type_common *type) | |
501 | { | |
502 | if (type->type != lttng_kernel_type_integer) | |
503 | return NULL; | |
504 | return container_of(type, const struct lttng_kernel_type_integer, parent); | |
505 | } | |
506 | ||
507 | static inline | |
508 | const struct lttng_kernel_type_string *lttng_kernel_get_type_string(const struct lttng_kernel_type_common *type) | |
509 | { | |
510 | if (type->type != lttng_kernel_type_string) | |
511 | return NULL; | |
512 | return container_of(type, const struct lttng_kernel_type_string, parent); | |
513 | } | |
514 | ||
515 | static inline | |
516 | const struct lttng_kernel_type_enum *lttng_kernel_get_type_enum(const struct lttng_kernel_type_common *type) | |
517 | { | |
518 | if (type->type != lttng_kernel_type_enum) | |
519 | return NULL; | |
520 | return container_of(type, const struct lttng_kernel_type_enum, parent); | |
521 | } | |
522 | ||
523 | static inline | |
524 | const struct lttng_kernel_type_array *lttng_kernel_get_type_array(const struct lttng_kernel_type_common *type) | |
525 | { | |
526 | if (type->type != lttng_kernel_type_array) | |
527 | return NULL; | |
528 | return container_of(type, const struct lttng_kernel_type_array, parent); | |
529 | } | |
530 | ||
531 | static inline | |
532 | const struct lttng_kernel_type_sequence *lttng_kernel_get_type_sequence(const struct lttng_kernel_type_common *type) | |
533 | { | |
534 | if (type->type != lttng_kernel_type_sequence) | |
535 | return NULL; | |
536 | return container_of(type, const struct lttng_kernel_type_sequence, parent); | |
537 | } | |
538 | ||
539 | static inline | |
540 | const struct lttng_kernel_type_struct *lttng_kernel_get_type_struct(const struct lttng_kernel_type_common *type) | |
541 | { | |
542 | if (type->type != lttng_kernel_type_struct) | |
543 | return NULL; | |
544 | return container_of(type, const struct lttng_kernel_type_struct, parent); | |
545 | } | |
546 | ||
547 | static inline | |
548 | const struct lttng_kernel_type_variant *lttng_kernel_get_type_variant(const struct lttng_kernel_type_common *type) | |
549 | { | |
550 | if (type->type != lttng_kernel_type_variant) | |
551 | return NULL; | |
552 | return container_of(type, const struct lttng_kernel_type_variant, parent); | |
553 | } | |
554 | ||
555 | static inline bool lttng_kernel_type_is_bytewise_integer(const struct lttng_kernel_type_common *type) | |
556 | { | |
557 | const struct lttng_kernel_type_integer *type_integer = lttng_kernel_get_type_integer(type); | |
558 | ||
559 | if (!type_integer) | |
560 | return false; | |
561 | switch (type_integer->size) { | |
c190d76e MJ |
562 | case 8: |
563 | lttng_fallthrough; | |
564 | case 16: | |
565 | lttng_fallthrough; | |
566 | case 32: | |
567 | lttng_fallthrough; | |
437d5aa5 MD |
568 | case 64: |
569 | break; | |
570 | default: | |
571 | return false; | |
572 | } | |
573 | return true; | |
574 | } | |
575 | ||
8a445457 MD |
576 | int lttng_kernel_interpret_event_filter(const struct lttng_kernel_event_common *event, |
577 | const char *interpreter_stack_data, | |
a92e844e | 578 | struct lttng_kernel_probe_ctx *probe_ctx, |
8a445457 MD |
579 | void *event_filter_ctx); |
580 | ||
5e08a34f | 581 | static inline |
1ae083ba MD |
582 | struct lttng_event_enabler_common *lttng_event_recorder_enabler_as_enabler( |
583 | struct lttng_event_recorder_enabler *event_recorder_enabler) | |
5e08a34f | 584 | { |
1ae083ba | 585 | return &event_recorder_enabler->parent; |
5e08a34f MD |
586 | } |
587 | ||
588 | static inline | |
8d554755 | 589 | struct lttng_event_enabler_common *lttng_event_notifier_enabler_as_enabler( |
5e08a34f MD |
590 | struct lttng_event_notifier_enabler *event_notifier_enabler) |
591 | { | |
5b9817ae | 592 | return &event_notifier_enabler->parent; |
5e08a34f MD |
593 | } |
594 | ||
0def9170 MD |
595 | static inline |
596 | struct lttng_event_ht *lttng_get_event_ht_from_enabler(struct lttng_event_enabler_common *event_enabler) | |
597 | { | |
598 | switch (event_enabler->enabler_type) { | |
599 | case LTTNG_EVENT_ENABLER_TYPE_RECORDER: | |
600 | { | |
601 | struct lttng_event_recorder_enabler *event_recorder_enabler = | |
602 | container_of(event_enabler, struct lttng_event_recorder_enabler, parent); | |
603 | return &event_recorder_enabler->chan->parent.session->priv->events_ht; | |
604 | } | |
605 | case LTTNG_EVENT_ENABLER_TYPE_NOTIFIER: | |
606 | { | |
607 | struct lttng_event_notifier_enabler *event_notifier_enabler = | |
608 | container_of(event_enabler, struct lttng_event_notifier_enabler, parent); | |
609 | return &event_notifier_enabler->group->events_ht; | |
610 | } | |
611 | default: | |
612 | return NULL; | |
613 | } | |
614 | } | |
615 | ||
546cb5f2 MD |
616 | static inline |
617 | struct list_head *lttng_get_event_list_head_from_enabler(struct lttng_event_enabler_common *event_enabler) | |
618 | { | |
619 | switch (event_enabler->enabler_type) { | |
620 | case LTTNG_EVENT_ENABLER_TYPE_RECORDER: | |
621 | { | |
622 | struct lttng_event_recorder_enabler *event_recorder_enabler = | |
623 | container_of(event_enabler, struct lttng_event_recorder_enabler, parent); | |
624 | return &event_recorder_enabler->chan->parent.session->priv->events; | |
625 | } | |
626 | case LTTNG_EVENT_ENABLER_TYPE_NOTIFIER: | |
627 | { | |
628 | struct lttng_event_notifier_enabler *event_notifier_enabler = | |
629 | container_of(event_enabler, struct lttng_event_notifier_enabler, parent); | |
630 | return &event_notifier_enabler->group->event_notifiers_head; | |
631 | } | |
632 | default: | |
633 | return NULL; | |
634 | } | |
635 | } | |
636 | ||
0fe45627 MD |
637 | int lttng_context_init(void); |
638 | void lttng_context_exit(void); | |
639 | int lttng_kernel_context_append(struct lttng_kernel_ctx **ctx_p, | |
640 | const struct lttng_kernel_ctx_field *f); | |
641 | void lttng_kernel_context_remove_last(struct lttng_kernel_ctx **ctx_p); | |
642 | struct lttng_kernel_ctx_field *lttng_kernel_get_context_field_from_index(struct lttng_kernel_ctx *ctx, | |
643 | size_t index); | |
644 | int lttng_kernel_find_context(struct lttng_kernel_ctx *ctx, const char *name); | |
645 | int lttng_kernel_get_context_index(struct lttng_kernel_ctx *ctx, const char *name); | |
646 | void lttng_kernel_destroy_context(struct lttng_kernel_ctx *ctx); | |
647 | int lttng_add_pid_to_ctx(struct lttng_kernel_ctx **ctx); | |
648 | int lttng_add_cpu_id_to_ctx(struct lttng_kernel_ctx **ctx); | |
649 | int lttng_add_procname_to_ctx(struct lttng_kernel_ctx **ctx); | |
650 | int lttng_add_prio_to_ctx(struct lttng_kernel_ctx **ctx); | |
651 | int lttng_add_nice_to_ctx(struct lttng_kernel_ctx **ctx); | |
652 | int lttng_add_vpid_to_ctx(struct lttng_kernel_ctx **ctx); | |
653 | int lttng_add_tid_to_ctx(struct lttng_kernel_ctx **ctx); | |
654 | int lttng_add_vtid_to_ctx(struct lttng_kernel_ctx **ctx); | |
655 | int lttng_add_ppid_to_ctx(struct lttng_kernel_ctx **ctx); | |
656 | int lttng_add_vppid_to_ctx(struct lttng_kernel_ctx **ctx); | |
657 | int lttng_add_hostname_to_ctx(struct lttng_kernel_ctx **ctx); | |
658 | int lttng_add_interruptible_to_ctx(struct lttng_kernel_ctx **ctx); | |
659 | int lttng_add_need_reschedule_to_ctx(struct lttng_kernel_ctx **ctx); | |
660 | #if defined(CONFIG_PREEMPT_RT_FULL) || defined(CONFIG_PREEMPT) | |
661 | int lttng_add_preemptible_to_ctx(struct lttng_kernel_ctx **ctx); | |
662 | #else | |
663 | static inline | |
664 | int lttng_add_preemptible_to_ctx(struct lttng_kernel_ctx **ctx) | |
665 | { | |
666 | return -ENOSYS; | |
667 | } | |
668 | #endif | |
669 | #ifdef CONFIG_PREEMPT_RT_FULL | |
670 | int lttng_add_migratable_to_ctx(struct lttng_kernel_ctx **ctx); | |
671 | #else | |
672 | static inline | |
673 | int lttng_add_migratable_to_ctx(struct lttng_kernel_ctx **ctx) | |
674 | { | |
675 | return -ENOSYS; | |
676 | } | |
677 | #endif | |
678 | ||
679 | int lttng_add_callstack_to_ctx(struct lttng_kernel_ctx **ctx, int type); | |
680 | ||
681 | #if defined(CONFIG_CGROUPS) && \ | |
682 | ((LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,6,0)) || \ | |
683 | LTTNG_UBUNTU_KERNEL_RANGE(4,4,0,0, 4,5,0,0)) | |
684 | int lttng_add_cgroup_ns_to_ctx(struct lttng_kernel_ctx **ctx); | |
685 | #else | |
686 | static inline | |
687 | int lttng_add_cgroup_ns_to_ctx(struct lttng_kernel_ctx **ctx) | |
688 | { | |
689 | return -ENOSYS; | |
690 | } | |
691 | #endif | |
692 | ||
693 | #if defined(CONFIG_IPC_NS) && \ | |
694 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) | |
695 | int lttng_add_ipc_ns_to_ctx(struct lttng_kernel_ctx **ctx); | |
696 | #else | |
697 | static inline | |
698 | int lttng_add_ipc_ns_to_ctx(struct lttng_kernel_ctx **ctx) | |
699 | { | |
700 | return -ENOSYS; | |
701 | } | |
702 | #endif | |
703 | ||
704 | #if !defined(LTTNG_MNT_NS_MISSING_HEADER) && \ | |
705 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) | |
706 | int lttng_add_mnt_ns_to_ctx(struct lttng_kernel_ctx **ctx); | |
707 | #else | |
708 | static inline | |
709 | int lttng_add_mnt_ns_to_ctx(struct lttng_kernel_ctx **ctx) | |
710 | { | |
711 | return -ENOSYS; | |
712 | } | |
713 | #endif | |
714 | ||
715 | #if defined(CONFIG_NET_NS) && \ | |
716 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) | |
717 | int lttng_add_net_ns_to_ctx(struct lttng_kernel_ctx **ctx); | |
718 | #else | |
719 | static inline | |
720 | int lttng_add_net_ns_to_ctx(struct lttng_kernel_ctx **ctx) | |
721 | { | |
722 | return -ENOSYS; | |
723 | } | |
724 | #endif | |
725 | ||
726 | #if defined(CONFIG_PID_NS) && \ | |
727 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) | |
728 | int lttng_add_pid_ns_to_ctx(struct lttng_kernel_ctx **ctx); | |
729 | #else | |
730 | static inline | |
731 | int lttng_add_pid_ns_to_ctx(struct lttng_kernel_ctx **ctx) | |
732 | { | |
733 | return -ENOSYS; | |
734 | } | |
735 | #endif | |
736 | ||
737 | #if defined(CONFIG_USER_NS) && \ | |
738 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) | |
739 | int lttng_add_user_ns_to_ctx(struct lttng_kernel_ctx **ctx); | |
740 | #else | |
741 | static inline | |
742 | int lttng_add_user_ns_to_ctx(struct lttng_kernel_ctx **ctx) | |
743 | { | |
744 | return -ENOSYS; | |
745 | } | |
746 | #endif | |
747 | ||
748 | #if defined(CONFIG_UTS_NS) && \ | |
749 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) | |
750 | int lttng_add_uts_ns_to_ctx(struct lttng_kernel_ctx **ctx); | |
751 | #else | |
752 | static inline | |
753 | int lttng_add_uts_ns_to_ctx(struct lttng_kernel_ctx **ctx) | |
754 | { | |
755 | return -ENOSYS; | |
756 | } | |
757 | #endif | |
758 | ||
759 | #if defined(CONFIG_TIME_NS) && \ | |
fce87a6e MJ |
760 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,6,0) || \ |
761 | LTTNG_RHEL_KERNEL_RANGE(4,18,0,305,0,0, 4,19,0,0,0,0)) | |
0fe45627 MD |
762 | int lttng_add_time_ns_to_ctx(struct lttng_kernel_ctx **ctx); |
763 | #else | |
764 | static inline | |
765 | int lttng_add_time_ns_to_ctx(struct lttng_kernel_ctx **ctx) | |
766 | { | |
767 | return -ENOSYS; | |
768 | } | |
769 | #endif | |
770 | ||
771 | int lttng_add_uid_to_ctx(struct lttng_kernel_ctx **ctx); | |
772 | int lttng_add_euid_to_ctx(struct lttng_kernel_ctx **ctx); | |
773 | int lttng_add_suid_to_ctx(struct lttng_kernel_ctx **ctx); | |
774 | int lttng_add_gid_to_ctx(struct lttng_kernel_ctx **ctx); | |
775 | int lttng_add_egid_to_ctx(struct lttng_kernel_ctx **ctx); | |
776 | int lttng_add_sgid_to_ctx(struct lttng_kernel_ctx **ctx); | |
777 | int lttng_add_vuid_to_ctx(struct lttng_kernel_ctx **ctx); | |
778 | int lttng_add_veuid_to_ctx(struct lttng_kernel_ctx **ctx); | |
779 | int lttng_add_vsuid_to_ctx(struct lttng_kernel_ctx **ctx); | |
780 | int lttng_add_vgid_to_ctx(struct lttng_kernel_ctx **ctx); | |
781 | int lttng_add_vegid_to_ctx(struct lttng_kernel_ctx **ctx); | |
782 | int lttng_add_vsgid_to_ctx(struct lttng_kernel_ctx **ctx); | |
783 | ||
784 | #if defined(CONFIG_PERF_EVENTS) | |
785 | int lttng_add_perf_counter_to_ctx(uint32_t type, | |
786 | uint64_t config, | |
787 | const char *name, | |
788 | struct lttng_kernel_ctx **ctx); | |
789 | int lttng_cpuhp_perf_counter_online(unsigned int cpu, | |
790 | struct lttng_cpuhp_node *node); | |
791 | int lttng_cpuhp_perf_counter_dead(unsigned int cpu, | |
792 | struct lttng_cpuhp_node *node); | |
793 | #else | |
794 | static inline | |
795 | int lttng_add_perf_counter_to_ctx(uint32_t type, | |
796 | uint64_t config, | |
797 | const char *name, | |
798 | struct lttng_kernel_ctx **ctx) | |
799 | { | |
800 | return -ENOSYS; | |
801 | } | |
802 | static inline | |
803 | int lttng_cpuhp_perf_counter_online(unsigned int cpu, | |
804 | struct lttng_cpuhp_node *node) | |
805 | { | |
806 | return 0; | |
807 | } | |
808 | static inline | |
809 | int lttng_cpuhp_perf_counter_dead(unsigned int cpu, | |
810 | struct lttng_cpuhp_node *node) | |
811 | { | |
812 | return 0; | |
813 | } | |
814 | #endif | |
815 | ||
1ae083ba | 816 | struct lttng_event_recorder_enabler *lttng_event_recorder_enabler_create( |
311e655a MD |
817 | enum lttng_enabler_format_type format_type, |
818 | struct lttng_kernel_abi_event *event_param, | |
f7d06400 | 819 | struct lttng_kernel_channel_buffer *chan); |
def1e304 | 820 | void lttng_event_enabler_session_add(struct lttng_kernel_session *session, |
1ae083ba | 821 | struct lttng_event_recorder_enabler *event_enabler); |
7b25ab0e | 822 | |
311e655a | 823 | struct lttng_event_notifier_enabler *lttng_event_notifier_enabler_create( |
311e655a | 824 | enum lttng_enabler_format_type format_type, |
1bbb5b2d MD |
825 | struct lttng_kernel_abi_event_notifier *event_notifier_param, |
826 | struct lttng_event_notifier_group *event_notifier_group); | |
827 | void lttng_event_notifier_enabler_group_add(struct lttng_event_notifier_group *event_notifier_group, | |
828 | struct lttng_event_notifier_enabler *event_notifier_enabler); | |
311e655a MD |
829 | int lttng_event_notifier_enabler_attach_capture_bytecode( |
830 | struct lttng_event_notifier_enabler *event_notifier_enabler, | |
831 | struct lttng_kernel_abi_capture_bytecode __user *bytecode); | |
832 | ||
44b1abdc MD |
833 | int lttng_event_enabler_enable(struct lttng_event_enabler_common *event_enabler); |
834 | int lttng_event_enabler_disable(struct lttng_event_enabler_common *event_enabler); | |
835 | int lttng_event_enabler_attach_filter_bytecode(struct lttng_event_enabler_common *event_enabler, | |
836 | struct lttng_kernel_abi_filter_bytecode __user *bytecode); | |
837 | void lttng_event_enabler_destroy(struct lttng_event_enabler_common *event_enabler); | |
838 | ||
8bff0fc3 | 839 | bool lttng_desc_match_enabler(const struct lttng_kernel_event_desc *desc, |
8d554755 | 840 | struct lttng_event_enabler_common *enabler); |
adfdce76 MD |
841 | bool lttng_event_enabler_match_event(struct lttng_event_enabler_common *event_enabler, |
842 | struct lttng_kernel_event_common *event); | |
843 | bool lttng_event_enabler_desc_match_event(struct lttng_event_enabler_common *event_enabler, | |
844 | const struct lttng_kernel_event_desc *desc, | |
845 | struct lttng_kernel_event_common *event); | |
311e655a MD |
846 | |
847 | void lttng_enabler_link_bytecode(const struct lttng_kernel_event_desc *event_desc, | |
848 | struct lttng_kernel_ctx *ctx, | |
849 | struct list_head *instance_bytecode_runtime_head, | |
850 | struct list_head *enabler_bytecode_runtime_head); | |
851 | ||
852 | #if defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS) | |
d26015f6 | 853 | int lttng_syscalls_register_event(struct lttng_event_enabler_common *event_enabler); |
9b2f1c54 MD |
854 | int lttng_syscall_filter_enable_event(struct lttng_kernel_event_common *event); |
855 | int lttng_syscall_filter_disable_event(struct lttng_kernel_event_common *event); | |
311e655a | 856 | |
6053e75e MD |
857 | int lttng_syscalls_unregister_syscall_table(struct lttng_kernel_syscall_table *syscall_table); |
858 | int lttng_syscalls_destroy_syscall_table(struct lttng_kernel_syscall_table *syscall_table); | |
859 | ||
c970b655 | 860 | long lttng_syscall_table_get_active_mask(struct lttng_kernel_syscall_table *syscall_table, |
311e655a | 861 | struct lttng_kernel_abi_syscall_mask __user *usyscall_mask); |
9cb5be7e MD |
862 | |
863 | void lttng_syscall_table_set_wildcard_all(struct lttng_event_enabler_common *event_enabler); | |
311e655a | 864 | #else |
d26015f6 | 865 | static inline int lttng_syscalls_register_event(struct lttng_event_enabler_common *event_enabler) |
311e655a MD |
866 | { |
867 | return -ENOSYS; | |
868 | } | |
869 | ||
9b2f1c54 | 870 | static inline int lttng_syscall_filter_enable_event(struct lttng_kernel_event_common *event) |
311e655a | 871 | { |
6053e75e | 872 | return -ENOSYS; |
311e655a MD |
873 | } |
874 | ||
9b2f1c54 | 875 | static inline int lttng_syscall_filter_disable_event(struct lttng_kernel_event_common *event) |
311e655a | 876 | { |
6053e75e | 877 | return -ENOSYS; |
311e655a MD |
878 | } |
879 | ||
6053e75e | 880 | static inline int lttng_syscalls_unregister_syscall_table(struct lttng_kernel_syscall_table *syscall_table) |
311e655a | 881 | { |
6053e75e | 882 | return 0; |
311e655a MD |
883 | } |
884 | ||
6053e75e | 885 | static inline int lttng_syscalls_destroy_syscall_table(struct lttng_kernel_syscall_table *syscall_table) |
311e655a | 886 | { |
6053e75e | 887 | return 0; |
311e655a MD |
888 | } |
889 | ||
c970b655 MD |
890 | static inline long lttng_syscall_table_get_active_mask(struct lttng_kernel_syscall_table *syscall_table, |
891 | struct lttng_kernel_abi_syscall_mask __user *usyscall_mask) | |
311e655a MD |
892 | { |
893 | return -ENOSYS; | |
894 | } | |
895 | ||
6053e75e | 896 | static inline int lttng_syscalls_create_matching_event_notifiers(struct lttng_event_notifier_enabler *event_notifier_enabler) |
311e655a | 897 | { |
6053e75e | 898 | return -ENOSYS; |
311e655a MD |
899 | } |
900 | ||
9cb5be7e MD |
901 | static inline void lttng_syscall_table_set_wildcard_all(struct lttng_event_enabler_common *event_enabler) |
902 | { | |
903 | } | |
311e655a | 904 | #endif |
0fe45627 | 905 | |
e4a26d6b MD |
906 | #ifdef CONFIG_KPROBES |
907 | int lttng_kprobes_register_event(const char *name, | |
908 | const char *symbol_name, | |
909 | uint64_t offset, | |
910 | uint64_t addr, | |
6a35e5bd MD |
911 | struct lttng_kernel_event_common *event); |
912 | void lttng_kprobes_unregister_event(struct lttng_kernel_event_common *event); | |
913 | void lttng_kprobes_destroy_event_private(struct lttng_kernel_event_common *event); | |
e4a26d6b MD |
914 | #else |
915 | static inline | |
916 | int lttng_kprobes_register_event(const char *name, | |
917 | const char *symbol_name, | |
918 | uint64_t offset, | |
919 | uint64_t addr, | |
6a35e5bd | 920 | struct lttng_kernel_event_common *event) |
e4a26d6b MD |
921 | { |
922 | return -ENOSYS; | |
923 | } | |
924 | ||
925 | static inline | |
6a35e5bd | 926 | void lttng_kprobes_unregister_event(struct lttng_kernel_event_common *event) |
e4a26d6b MD |
927 | { |
928 | } | |
929 | ||
930 | static inline | |
6a35e5bd | 931 | void lttng_kprobes_destroy_event_private(struct lttng_kernel_event_common *event) |
e4a26d6b MD |
932 | { |
933 | } | |
934 | #endif | |
935 | ||
936 | int lttng_event_add_callsite(struct lttng_kernel_event_common *event, | |
937 | struct lttng_kernel_abi_event_callsite __user *callsite); | |
938 | ||
939 | #ifdef CONFIG_UPROBES | |
940 | int lttng_uprobes_register_event(const char *name, | |
17806c46 | 941 | int fd, struct lttng_kernel_event_common *event); |
e4a26d6b MD |
942 | int lttng_uprobes_event_add_callsite(struct lttng_kernel_event_common *event, |
943 | struct lttng_kernel_abi_event_callsite __user *callsite); | |
17806c46 MD |
944 | void lttng_uprobes_unregister_event(struct lttng_kernel_event_common *event); |
945 | void lttng_uprobes_destroy_event_private(struct lttng_kernel_event_common *event); | |
e4a26d6b MD |
946 | #else |
947 | static inline | |
948 | int lttng_uprobes_register_event(const char *name, | |
17806c46 | 949 | int fd, struct lttng_kernel_event_common *event) |
e4a26d6b MD |
950 | { |
951 | return -ENOSYS; | |
952 | } | |
953 | ||
954 | static inline | |
955 | int lttng_uprobes_event_add_callsite(struct lttng_kernel_event_common *event, | |
956 | struct lttng_kernel_abi_event_callsite __user *callsite) | |
957 | { | |
958 | return -ENOSYS; | |
959 | } | |
960 | ||
961 | static inline | |
17806c46 | 962 | void lttng_uprobes_unregister_event(struct lttng_kernel_event_common *event) |
e4a26d6b MD |
963 | { |
964 | } | |
965 | ||
966 | static inline | |
17806c46 | 967 | void lttng_uprobes_destroy_event_private(struct lttng_kernel_event_common *event) |
e4a26d6b MD |
968 | { |
969 | } | |
970 | #endif | |
971 | ||
972 | #ifdef CONFIG_KRETPROBES | |
973 | int lttng_kretprobes_register(const char *name, | |
974 | const char *symbol_name, | |
975 | uint64_t offset, | |
976 | uint64_t addr, | |
eb6b47db MD |
977 | struct lttng_kernel_event_common *event_entry, |
978 | struct lttng_kernel_event_common *event_exit); | |
979 | void lttng_kretprobes_unregister(struct lttng_kernel_event_common *event); | |
980 | void lttng_kretprobes_destroy_private(struct lttng_kernel_event_common *event); | |
e4a26d6b MD |
981 | int lttng_kretprobes_event_enable_state(struct lttng_kernel_event_common *event, |
982 | int enable); | |
983 | #else | |
984 | static inline | |
985 | int lttng_kretprobes_register(const char *name, | |
986 | const char *symbol_name, | |
987 | uint64_t offset, | |
988 | uint64_t addr, | |
eb6b47db MD |
989 | struct lttng_kernel_event_common *event_entry, |
990 | struct lttng_kernel_event_common *event_exit) | |
e4a26d6b MD |
991 | { |
992 | return -ENOSYS; | |
993 | } | |
994 | ||
995 | static inline | |
eb6b47db | 996 | void lttng_kretprobes_unregister(struct lttng_kernel_event_common *event) |
e4a26d6b MD |
997 | { |
998 | } | |
999 | ||
1000 | static inline | |
eb6b47db | 1001 | void lttng_kretprobes_destroy_private(struct lttng_kernel_event_common *event) |
e4a26d6b MD |
1002 | { |
1003 | } | |
1004 | ||
1005 | static inline | |
1006 | int lttng_kretprobes_event_enable_state(struct lttng_kernel_event_common *event, | |
1007 | int enable) | |
1008 | { | |
1009 | return -ENOSYS; | |
1010 | } | |
1011 | #endif | |
1012 | ||
e8c0bbd3 MD |
1013 | void lttng_lock_sessions(void); |
1014 | void lttng_unlock_sessions(void); | |
1015 | ||
1016 | struct list_head *lttng_get_probe_list_head(void); | |
1017 | ||
1018 | int lttng_fix_pending_events(void); | |
1019 | int lttng_fix_pending_event_notifiers(void); | |
1020 | int lttng_session_active(void); | |
1021 | bool lttng_event_notifier_active(void); | |
1022 | ||
8cdc1a81 MD |
1023 | struct lttng_kernel_session *lttng_session_create(void); |
1024 | int lttng_session_enable(struct lttng_kernel_session *session); | |
1025 | int lttng_session_disable(struct lttng_kernel_session *session); | |
1026 | void lttng_session_destroy(struct lttng_kernel_session *session); | |
1027 | int lttng_session_metadata_regenerate(struct lttng_kernel_session *session); | |
1028 | int lttng_session_statedump(struct lttng_kernel_session *session); | |
e8c0bbd3 MD |
1029 | void metadata_cache_destroy(struct kref *kref); |
1030 | ||
1031 | struct lttng_counter *lttng_kernel_counter_create( | |
1032 | const char *counter_transport_name, size_t number_dimensions, | |
1033 | const size_t *dimensions_sizes); | |
1034 | int lttng_kernel_counter_read(struct lttng_counter *counter, | |
1035 | const size_t *dimension_indexes, int32_t cpu, | |
1036 | int64_t *val, bool *overflow, bool *underflow); | |
1037 | int lttng_kernel_counter_aggregate(struct lttng_counter *counter, | |
1038 | const size_t *dimension_indexes, int64_t *val, | |
1039 | bool *overflow, bool *underflow); | |
1040 | int lttng_kernel_counter_clear(struct lttng_counter *counter, | |
1041 | const size_t *dimension_indexes); | |
1042 | struct lttng_event_notifier_group *lttng_event_notifier_group_create(void); | |
1043 | int lttng_event_notifier_group_create_error_counter( | |
1044 | struct file *event_notifier_group_file, | |
1045 | const struct lttng_kernel_abi_counter_conf *error_counter_conf); | |
1046 | void lttng_event_notifier_group_destroy( | |
1047 | struct lttng_event_notifier_group *event_notifier_group); | |
1048 | ||
4e252d1e | 1049 | struct lttng_kernel_channel_buffer *lttng_channel_buffer_create(struct lttng_kernel_session *session, |
e8c0bbd3 MD |
1050 | const char *transport_name, |
1051 | void *buf_addr, | |
1052 | size_t subbuf_size, size_t num_subbuf, | |
1053 | unsigned int switch_timer_interval, | |
1054 | unsigned int read_timer_interval, | |
1055 | enum channel_type channel_type); | |
f7d06400 | 1056 | struct lttng_kernel_channel_buffer *lttng_global_channel_create(struct lttng_kernel_session *session, |
e8c0bbd3 MD |
1057 | int overwrite, void *buf_addr, |
1058 | size_t subbuf_size, size_t num_subbuf, | |
1059 | unsigned int switch_timer_interval, | |
1060 | unsigned int read_timer_interval); | |
1061 | ||
f7d06400 | 1062 | void lttng_metadata_channel_destroy(struct lttng_kernel_channel_buffer *chan); |
83006ee0 | 1063 | struct lttng_kernel_event_common *_lttng_kernel_event_create(struct lttng_event_enabler_common *event_enabler, |
def1e304 | 1064 | const struct lttng_kernel_event_desc *event_desc); |
83006ee0 | 1065 | struct lttng_kernel_event_common *lttng_kernel_event_create(struct lttng_event_enabler_common *event_enabler, |
def1e304 | 1066 | const struct lttng_kernel_event_desc *event_desc); |
e8c0bbd3 | 1067 | |
6b757027 MD |
1068 | int lttng_channel_enable(struct lttng_kernel_channel_common *channel); |
1069 | int lttng_channel_disable(struct lttng_kernel_channel_common *channel); | |
e8c0bbd3 MD |
1070 | int lttng_event_enable(struct lttng_kernel_event_common *event); |
1071 | int lttng_event_disable(struct lttng_kernel_event_common *event); | |
1072 | ||
1073 | void lttng_transport_register(struct lttng_transport *transport); | |
1074 | void lttng_transport_unregister(struct lttng_transport *transport); | |
1075 | ||
1076 | void lttng_counter_transport_register(struct lttng_counter_transport *transport); | |
1077 | void lttng_counter_transport_unregister(struct lttng_counter_transport *transport); | |
1078 | ||
1079 | void synchronize_trace(void); | |
1080 | int lttng_abi_init(void); | |
1081 | int lttng_abi_compat_old_init(void); | |
1082 | void lttng_abi_exit(void); | |
1083 | void lttng_abi_compat_old_exit(void); | |
1084 | ||
1085 | const struct lttng_kernel_event_desc *lttng_event_desc_get(const char *name); | |
1086 | void lttng_event_desc_put(const struct lttng_kernel_event_desc *desc); | |
1087 | int lttng_probes_init(void); | |
1088 | void lttng_probes_exit(void); | |
1089 | ||
1090 | int lttng_metadata_output_channel(struct lttng_metadata_stream *stream, | |
860c213b | 1091 | struct lttng_kernel_ring_buffer_channel *chan, bool *coherent); |
e8c0bbd3 MD |
1092 | |
1093 | int lttng_id_tracker_get_node_id(const struct lttng_id_hash_node *node); | |
8c0393c3 MD |
1094 | int lttng_id_tracker_empty_set(struct lttng_kernel_id_tracker *lf); |
1095 | int lttng_id_tracker_init(struct lttng_kernel_id_tracker *lf, | |
1096 | struct lttng_kernel_session *session, | |
1097 | enum tracker_type type); | |
1098 | void lttng_id_tracker_fini(struct lttng_kernel_id_tracker *lf); | |
1099 | void lttng_id_tracker_destroy(struct lttng_kernel_id_tracker *lf, bool rcu); | |
1100 | int lttng_id_tracker_add(struct lttng_kernel_id_tracker *lf, int id); | |
1101 | int lttng_id_tracker_del(struct lttng_kernel_id_tracker *lf, int id); | |
e8c0bbd3 | 1102 | |
8cdc1a81 | 1103 | int lttng_session_track_id(struct lttng_kernel_session *session, |
e8c0bbd3 | 1104 | enum tracker_type tracker_type, int id); |
8cdc1a81 | 1105 | int lttng_session_untrack_id(struct lttng_kernel_session *session, |
e8c0bbd3 MD |
1106 | enum tracker_type tracker_type, int id); |
1107 | ||
8cdc1a81 | 1108 | int lttng_session_list_tracker_ids(struct lttng_kernel_session *session, |
e8c0bbd3 MD |
1109 | enum tracker_type tracker_type); |
1110 | ||
1111 | void lttng_clock_ref(void); | |
1112 | void lttng_clock_unref(void); | |
1113 | ||
1114 | void lttng_free_event_filter_runtime(struct lttng_kernel_event_common *event); | |
1115 | ||
1116 | int lttng_probes_init(void); | |
1117 | ||
1118 | int lttng_logger_init(void); | |
1119 | void lttng_logger_exit(void); | |
1120 | ||
8cdc1a81 | 1121 | extern int lttng_statedump_start(struct lttng_kernel_session *session); |
e8c0bbd3 MD |
1122 | |
1123 | int lttng_calibrate(struct lttng_kernel_abi_calibrate *calibrate); | |
1124 | ||
1125 | extern const struct file_operations lttng_tracepoint_list_fops; | |
1126 | extern const struct file_operations lttng_syscall_list_fops; | |
1127 | ||
0fe45627 MD |
1128 | #define lttng_kernel_static_ctx_field(_event_field, _get_size, _record, _get_value, _destroy, _priv) \ |
1129 | __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_ctx_field, { \ | |
1130 | .event_field = (_event_field), \ | |
1131 | .get_size = (_get_size), \ | |
1132 | .record = (_record), \ | |
1133 | .get_value = (_get_value), \ | |
1134 | .destroy = (_destroy), \ | |
1135 | .priv = (_priv), \ | |
1136 | }) | |
1137 | ||
92bc1e23 | 1138 | #endif /* _LTTNG_EVENTS_INTERNAL_H */ |