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b7cdc182 | 1 | /* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only) |
9f36eaed | 2 | * |
2df37e95 | 3 | * lttng/events.h |
4e3c1b9b | 4 | * |
4e3c1b9b | 5 | * Holds LTTng per-session event registry. |
17baffe2 | 6 | * |
886d51a3 | 7 | * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
4e3c1b9b MD |
8 | */ |
9 | ||
9f36eaed MJ |
10 | #ifndef _LTTNG_EVENTS_H |
11 | #define _LTTNG_EVENTS_H | |
12 | ||
5f4c791e | 13 | #include <lttng/kernel-version.h> |
4e3c1b9b | 14 | #include <linux/list.h> |
d6d808f3 | 15 | #include <linux/kprobes.h> |
d83004aa | 16 | #include <linux/kref.h> |
41f229dc | 17 | #include <linux/uuid.h> |
754d534a | 18 | #include <linux/irq_work.h> |
149b9a9d | 19 | #include <wrapper/uprobes.h> |
2df37e95 MD |
20 | #include <lttng/cpuhotplug.h> |
21 | #include <lttng/tracer.h> | |
22 | #include <lttng/abi.h> | |
23 | #include <lttng/abi-old.h> | |
24 | #include <lttng/endian.h> | |
4e3c1b9b | 25 | |
e97dc605 | 26 | #define lttng_is_signed_type(type) (((type) -1) < (type) 1) |
9e7e4892 | 27 | |
ac847066 | 28 | struct lttng_kernel_channel_buffer; |
a40e3229 | 29 | struct lttng_kernel_session; |
e27e4381 | 30 | struct lttng_kernel_ring_buffer_ctx; |
4e3c1b9b | 31 | |
c0edae1d MD |
32 | /* Type description */ |
33 | ||
12bb2edb MD |
34 | enum lttng_kernel_type { |
35 | lttng_kernel_type_integer, | |
36 | lttng_kernel_type_string, | |
437d5aa5 MD |
37 | lttng_kernel_type_enum, |
38 | lttng_kernel_type_array, | |
39 | lttng_kernel_type_sequence, | |
40 | lttng_kernel_type_struct, | |
41 | lttng_kernel_type_variant, | |
12bb2edb | 42 | NR_LTTNG_KERNEL_TYPES, |
c0edae1d MD |
43 | }; |
44 | ||
28cbcb59 MD |
45 | enum lttng_kernel_string_encoding { |
46 | lttng_kernel_string_encoding_none = 0, | |
47 | lttng_kernel_string_encoding_UTF8 = 1, | |
48 | lttng_kernel_string_encoding_ASCII = 2, | |
49 | NR_LTTNG_KERNEL_STRING_ENCODING, | |
c0edae1d MD |
50 | }; |
51 | ||
a28cc520 | 52 | struct lttng_kernel_enum_value { |
141ddf28 MD |
53 | unsigned long long value; |
54 | unsigned int signedness:1; | |
55 | }; | |
56 | ||
a28cc520 MD |
57 | struct lttng_kernel_enum_entry { |
58 | struct lttng_kernel_enum_value start, end; /* start and end are inclusive */ | |
c0edae1d | 59 | const char *string; |
08ad1061 PP |
60 | struct { |
61 | unsigned int is_auto:1; | |
62 | } options; | |
c0edae1d MD |
63 | }; |
64 | ||
437d5aa5 MD |
65 | /* |
66 | * struct lttng_kernel_type_common is fixed-size. Its children inherits | |
67 | * from it by embedding struct lttng_kernel_type_common as its first field. | |
68 | */ | |
69 | struct lttng_kernel_type_common { | |
70 | enum lttng_kernel_type type; | |
71 | }; | |
72 | ||
73 | struct lttng_kernel_type_integer { | |
74 | struct lttng_kernel_type_common parent; | |
c099397a MD |
75 | unsigned int size; /* in bits */ |
76 | unsigned short alignment; /* in bits */ | |
9cccf98a MD |
77 | unsigned int signedness:1, |
78 | reverse_byte_order:1; | |
e0a7a7c4 | 79 | unsigned int base; /* 2, 8, 10, 16, for pretty print */ |
437d5aa5 MD |
80 | }; |
81 | ||
82 | struct lttng_kernel_type_string { | |
83 | struct lttng_kernel_type_common parent; | |
28cbcb59 | 84 | enum lttng_kernel_string_encoding encoding; |
c099397a MD |
85 | }; |
86 | ||
437d5aa5 MD |
87 | struct lttng_kernel_type_enum { |
88 | struct lttng_kernel_type_common parent; | |
89 | const struct lttng_kernel_enum_desc *desc; /* Enumeration mapping */ | |
90 | const struct lttng_kernel_type_common *container_type; | |
91 | }; | |
92 | ||
93 | struct lttng_kernel_type_array { | |
94 | struct lttng_kernel_type_common parent; | |
95 | const struct lttng_kernel_type_common *elem_type; | |
96 | unsigned int length; /* Num. elems. */ | |
97 | unsigned int alignment; | |
98 | enum lttng_kernel_string_encoding encoding; | |
99 | }; | |
100 | ||
101 | struct lttng_kernel_type_sequence { | |
102 | struct lttng_kernel_type_common parent; | |
f0039724 | 103 | const char *length_name; /* Length field name. If NULL, use previous field. */ |
437d5aa5 MD |
104 | const struct lttng_kernel_type_common *elem_type; |
105 | unsigned int alignment; /* Alignment before elements. */ | |
106 | enum lttng_kernel_string_encoding encoding; | |
107 | }; | |
108 | ||
109 | struct lttng_kernel_type_struct { | |
110 | struct lttng_kernel_type_common parent; | |
111 | unsigned int nr_fields; | |
87c1e467 | 112 | const struct lttng_kernel_event_field * const *fields; /* Array of pointers to fields. */ |
437d5aa5 MD |
113 | unsigned int alignment; |
114 | }; | |
115 | ||
116 | struct lttng_kernel_type_variant { | |
117 | struct lttng_kernel_type_common parent; | |
f0039724 | 118 | const char *tag_name; /* Tag field name. If NULL, use previous field. */ |
87c1e467 | 119 | const struct lttng_kernel_event_field * const *choices; /* Array of pointers to fields. */ |
437d5aa5 MD |
120 | unsigned int nr_choices; |
121 | unsigned int alignment; | |
c099397a MD |
122 | }; |
123 | ||
d96a4a7a | 124 | struct lttng_kernel_enum_desc { |
c099397a | 125 | const char *name; |
87c1e467 | 126 | const struct lttng_kernel_enum_entry * const *entries; |
141ddf28 | 127 | unsigned int nr_entries; |
e69abdfd | 128 | const struct lttng_kernel_probe_desc *probe_desc; |
c099397a | 129 | }; |
c0edae1d MD |
130 | |
131 | /* Event field description */ | |
132 | ||
437d5aa5 | 133 | struct lttng_kernel_event_field { |
c0edae1d | 134 | const char *name; |
437d5aa5 | 135 | const struct lttng_kernel_type_common *type; |
f127e61e | 136 | unsigned int nowrite:1, /* do not write into trace */ |
ceabb767 MD |
137 | user:1, /* fetch from user-space */ |
138 | nofilter:1; /* do not consider for filter */ | |
c0edae1d MD |
139 | }; |
140 | ||
16e1064f FD |
141 | #ifndef PARAMS |
142 | #define PARAMS(args...) args | |
143 | #endif | |
144 | ||
437d5aa5 MD |
145 | #define lttng_kernel_static_type_integer(_size, _alignment, _signedness, _byte_order, _base) \ |
146 | ((const struct lttng_kernel_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_type_integer, { \ | |
147 | .parent = { \ | |
148 | .type = lttng_kernel_type_integer, \ | |
149 | }, \ | |
150 | .size = (_size), \ | |
151 | .alignment = (_alignment), \ | |
152 | .signedness = (_signedness), \ | |
153 | .reverse_byte_order = (_byte_order) != __BYTE_ORDER, \ | |
154 | .base = (_base), \ | |
155 | })) | |
156 | ||
157 | #define lttng_kernel_static_type_integer_from_type(_type, _byte_order, _base) \ | |
158 | lttng_kernel_static_type_integer(sizeof(_type) * CHAR_BIT, \ | |
159 | lttng_alignof(_type) * CHAR_BIT, \ | |
160 | lttng_is_signed_type(_type), \ | |
161 | _byte_order, \ | |
162 | _base) | |
163 | ||
164 | #define lttng_kernel_static_type_enum(_desc, _container_type) \ | |
165 | ((const struct lttng_kernel_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_type_enum, { \ | |
166 | .parent = { \ | |
167 | .type = lttng_kernel_type_enum, \ | |
168 | }, \ | |
169 | .desc = (_desc), \ | |
170 | .container_type = (_container_type), \ | |
171 | })) | |
172 | ||
173 | #define lttng_kernel_static_type_array(_length, _elem_type, _alignment, _encoding) \ | |
174 | ((const struct lttng_kernel_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_type_array, { \ | |
175 | .parent = { \ | |
176 | .type = lttng_kernel_type_array, \ | |
177 | }, \ | |
178 | .length = (_length), \ | |
179 | .alignment = (_alignment), \ | |
180 | .encoding = lttng_kernel_string_encoding_##_encoding, \ | |
181 | .elem_type = (_elem_type), \ | |
182 | })) | |
183 | ||
184 | #define lttng_kernel_static_type_array_text(_length) \ | |
185 | lttng_kernel_static_type_array(_length, \ | |
186 | lttng_kernel_static_type_integer(sizeof(char) * CHAR_BIT, \ | |
187 | lttng_alignof(char) * CHAR_BIT, lttng_is_signed_type(char), \ | |
188 | __BYTE_ORDER, 10), \ | |
189 | 0, UTF8) | |
190 | ||
191 | #define lttng_kernel_static_type_sequence(_length_name, _elem_type, _alignment, _encoding) \ | |
192 | ((const struct lttng_kernel_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_type_sequence, { \ | |
193 | .parent = { \ | |
194 | .type = lttng_kernel_type_sequence, \ | |
195 | }, \ | |
196 | .length_name = (_length_name), \ | |
197 | .alignment = (_alignment), \ | |
198 | .encoding = lttng_kernel_string_encoding_##_encoding, \ | |
199 | .elem_type = (_elem_type), \ | |
200 | })) | |
201 | ||
202 | #define lttng_kernel_static_type_string(_encoding) \ | |
203 | ((const struct lttng_kernel_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_type_string, { \ | |
204 | .parent = { \ | |
205 | .type = lttng_kernel_type_string, \ | |
206 | }, \ | |
207 | .encoding = lttng_kernel_string_encoding_##_encoding, \ | |
208 | })) | |
209 | ||
16e1064f FD |
210 | #define lttng_kernel_static_type_struct_init(_nr_fields, _fields, _alignment) \ |
211 | { \ | |
437d5aa5 MD |
212 | .parent = { \ |
213 | .type = lttng_kernel_type_struct, \ | |
214 | }, \ | |
215 | .nr_fields = (_nr_fields), \ | |
216 | .fields = _fields, \ | |
217 | .alignment = (_alignment), \ | |
16e1064f FD |
218 | } |
219 | ||
220 | #define lttng_kernel_static_type_struct(_nr_fields, _fields, _alignment) \ | |
221 | ((const struct lttng_kernel_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_type_struct, \ | |
222 | lttng_kernel_static_type_struct_init(_nr_fields, PARAMS(_fields), _alignment) \ | |
223 | )) | |
437d5aa5 MD |
224 | |
225 | #define lttng_kernel_static_type_variant(_nr_choices, _choices, _tag_name, _alignment) \ | |
226 | ((const struct lttng_kernel_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_type_variant, { \ | |
227 | .parent = { \ | |
228 | .type = lttng_kernel_type_variant, \ | |
229 | }, \ | |
230 | .tag_name = (_tag_name), \ | |
231 | .choices = _choices, \ | |
232 | .nr_choices = (_nr_choices), \ | |
233 | .alignment = (_alignment), \ | |
234 | })) | |
235 | ||
236 | #define lttng_kernel_static_event_field(_name, _type, _nowrite, _user, _nofilter) \ | |
237 | __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_event_field, { \ | |
238 | .name = (_name), \ | |
239 | .type = (_type), \ | |
240 | .nowrite = (_nowrite), \ | |
241 | .user = (_user), \ | |
242 | .nofilter = (_nofilter), \ | |
243 | }) | |
244 | ||
245 | #define lttng_kernel_static_event_field_array(_fields...) \ | |
246 | __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_event_field *, \ | |
247 | _fields \ | |
248 | ) | |
249 | ||
437d5aa5 MD |
250 | #define lttng_kernel_static_enum_entry_value(_string, _value) \ |
251 | __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_enum_entry, { \ | |
252 | .start = { \ | |
253 | .signedness = lttng_is_signed_type(__typeof__(_value)), \ | |
254 | .value = lttng_is_signed_type(__typeof__(_value)) ? \ | |
255 | (long long) (_value) : (_value), \ | |
256 | }, \ | |
257 | .end = { \ | |
258 | .signedness = lttng_is_signed_type(__typeof__(_value)), \ | |
259 | .value = lttng_is_signed_type(__typeof__(_value)) ? \ | |
260 | (long long) (_value) : (_value), \ | |
261 | }, \ | |
262 | .string = (_string), \ | |
263 | }), | |
264 | ||
265 | #define lttng_kernel_static_enum_entry_range(_string, _range_start, _range_end) \ | |
266 | __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_enum_entry, { \ | |
267 | .start = { \ | |
268 | .signedness = lttng_is_signed_type(__typeof__(_range_start)), \ | |
269 | .value = lttng_is_signed_type(__typeof__(_range_start)) ? \ | |
270 | (long long) (_range_start) : (_range_start), \ | |
271 | }, \ | |
272 | .end = { \ | |
273 | .signedness = lttng_is_signed_type(__typeof__(_range_end)), \ | |
274 | .value = lttng_is_signed_type(__typeof__(_range_end)) ? \ | |
275 | (long long) (_range_end) : (_range_end), \ | |
276 | }, \ | |
277 | .string = (_string), \ | |
278 | }), | |
279 | ||
280 | #define lttng_kernel_static_enum_entry_auto(_string) \ | |
281 | __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_enum_entry, { \ | |
282 | .start = { \ | |
283 | .signedness = -1, \ | |
284 | .value = -1, \ | |
285 | }, \ | |
286 | .end = { \ | |
287 | .signedness = -1, \ | |
288 | .value = -1, \ | |
289 | }, \ | |
290 | .string = (_string), \ | |
291 | .options = { \ | |
292 | .is_auto = 1, \ | |
293 | } \ | |
294 | }), | |
295 | ||
346cb5ee | 296 | struct lttng_kernel_probe_ctx { |
e2d5dbc7 | 297 | struct lttng_kernel_event_common *event; |
79150a49 JD |
298 | uint8_t interruptible; |
299 | }; | |
300 | ||
e69abdfd MD |
301 | struct lttng_kernel_tracepoint_class { |
302 | void (*probe_callback)(void); | |
87c1e467 | 303 | const struct lttng_kernel_event_field * const *fields; /* event payload */ |
e69abdfd MD |
304 | unsigned int nr_fields; |
305 | const struct lttng_kernel_probe_desc *probe_desc; | |
306 | }; | |
307 | ||
437d5aa5 MD |
308 | struct lttng_kernel_event_desc { |
309 | const char *event_name; /* lttng-modules name */ | |
310 | const char *event_kname; /* Linux kernel name (tracepoints) */ | |
311 | const struct lttng_kernel_probe_desc *probe_desc; | |
e69abdfd | 312 | const struct lttng_kernel_tracepoint_class *tp_class; |
dc7f600a | 313 | struct module *owner; |
c0edae1d MD |
314 | }; |
315 | ||
437d5aa5 MD |
316 | struct lttng_kernel_probe_desc { |
317 | const char *provider_name; | |
87c1e467 | 318 | const struct lttng_kernel_event_desc * const *event_desc; |
85a9ca7f MD |
319 | unsigned int nr_events; |
320 | struct list_head head; /* chain registered probes */ | |
3c997079 MD |
321 | struct list_head lazy_init_head; |
322 | int lazy; /* lazy registration */ | |
85a9ca7f MD |
323 | }; |
324 | ||
8a445457 MD |
325 | /* |
326 | * Result of the run_filter() callback. | |
327 | */ | |
328 | enum lttng_kernel_event_filter_result { | |
329 | LTTNG_KERNEL_EVENT_FILTER_ACCEPT = 0, | |
330 | LTTNG_KERNEL_EVENT_FILTER_REJECT = 1, | |
331 | }; | |
332 | ||
a67ba386 MD |
333 | struct lttng_kernel_event_common_private; |
334 | ||
335 | enum lttng_kernel_event_type { | |
336 | LTTNG_KERNEL_EVENT_TYPE_RECORDER = 0, | |
337 | LTTNG_KERNEL_EVENT_TYPE_NOTIFIER = 1, | |
338 | }; | |
339 | ||
340 | struct lttng_kernel_event_common { | |
341 | struct lttng_kernel_event_common_private *priv; /* Private event interface */ | |
342 | ||
343 | enum lttng_kernel_event_type type; | |
344 | /* Get child with container_of(). */ | |
345 | ||
e64957da | 346 | int enabled; |
a67ba386 | 347 | int eval_filter; /* Need to evaluate filters */ |
8a445457 | 348 | int (*run_filter)(const struct lttng_kernel_event_common *event, |
a67ba386 | 349 | const char *stack_data, |
346cb5ee | 350 | struct lttng_kernel_probe_ctx *probe_ctx, |
a67ba386 | 351 | void *filter_ctx); |
3c997079 MD |
352 | }; |
353 | ||
a67ba386 MD |
354 | struct lttng_kernel_event_recorder_private; |
355 | ||
356 | struct lttng_kernel_event_recorder { | |
357 | struct lttng_kernel_event_common parent; | |
358 | struct lttng_kernel_event_recorder_private *priv; /* Private event record interface */ | |
359 | ||
ac847066 | 360 | struct lttng_kernel_channel_buffer *chan; |
c3eddb2e MD |
361 | }; |
362 | ||
a67ba386 MD |
363 | struct lttng_kernel_notification_ctx { |
364 | int eval_capture; /* Capture evaluation available. */ | |
365 | }; | |
dffef45d | 366 | |
a67ba386 | 367 | struct lttng_kernel_event_notifier_private; |
8a8ac9a8 | 368 | |
a67ba386 MD |
369 | struct lttng_kernel_event_notifier { |
370 | struct lttng_kernel_event_common parent; | |
371 | struct lttng_kernel_event_notifier_private *priv; /* Private event notifier interface */ | |
dffef45d | 372 | |
a67ba386 MD |
373 | int eval_capture; /* Need to evaluate capture */ |
374 | void (*notification_send)(struct lttng_kernel_event_notifier *event_notifier, | |
a67ba386 | 375 | const char *stack_data, |
346cb5ee | 376 | struct lttng_kernel_probe_ctx *probe_ctx, |
a67ba386 | 377 | struct lttng_kernel_notification_ctx *notif_ctx); |
dffef45d FD |
378 | }; |
379 | ||
da1fe18f MD |
380 | struct lttng_kernel_channel_buffer_ops { |
381 | struct lttng_kernel_channel_buffer_ops_private *priv; /* Private channel buffer ops interface. */ | |
382 | ||
e27e4381 MD |
383 | int (*event_reserve)(struct lttng_kernel_ring_buffer_ctx *ctx); |
384 | void (*event_commit)(struct lttng_kernel_ring_buffer_ctx *ctx); | |
385 | void (*event_write)(struct lttng_kernel_ring_buffer_ctx *ctx, const void *src, | |
77fcffef | 386 | size_t len, size_t alignment); |
e27e4381 | 387 | void (*event_write_from_user)(struct lttng_kernel_ring_buffer_ctx *ctx, |
77fcffef | 388 | const void *src, size_t len, size_t alignment); |
e27e4381 | 389 | void (*event_memset)(struct lttng_kernel_ring_buffer_ctx *ctx, |
58aa5d24 | 390 | int c, size_t len); |
e27e4381 | 391 | void (*event_strcpy)(struct lttng_kernel_ring_buffer_ctx *ctx, const char *src, |
16f78f3a | 392 | size_t len); |
e27e4381 | 393 | void (*event_strcpy_from_user)(struct lttng_kernel_ring_buffer_ctx *ctx, |
16f78f3a | 394 | const char __user *src, size_t len); |
959132c9 MD |
395 | void (*event_pstrcpy_pad)(struct lttng_kernel_ring_buffer_ctx *ctx, |
396 | const char *src, size_t len); | |
397 | void (*event_pstrcpy_pad_from_user)(struct lttng_kernel_ring_buffer_ctx *ctx, | |
398 | const char __user *src, size_t len); | |
ac847066 MD |
399 | void (*lost_event_too_big)(struct lttng_kernel_channel_buffer *lttng_channel); |
400 | }; | |
401 | ||
402 | enum lttng_kernel_channel_type { | |
403 | LTTNG_KERNEL_CHANNEL_TYPE_BUFFER = 0, | |
85a9ca7f MD |
404 | }; |
405 | ||
ac847066 MD |
406 | struct lttng_kernel_channel_common_private; |
407 | ||
408 | /* Use container_of() to get child. */ | |
409 | struct lttng_kernel_channel_common { | |
410 | struct lttng_kernel_channel_common_private *priv; /* Private channel interface. */ | |
411 | ||
412 | enum lttng_kernel_channel_type type; | |
413 | ||
e64957da | 414 | int enabled; |
a40e3229 | 415 | struct lttng_kernel_session *session; |
ac847066 MD |
416 | }; |
417 | ||
418 | struct lttng_kernel_channel_buffer_private; | |
419 | ||
420 | struct lttng_kernel_channel_buffer { | |
421 | struct lttng_kernel_channel_common parent; | |
422 | struct lttng_kernel_channel_buffer_private *priv; | |
423 | ||
da1fe18f | 424 | struct lttng_kernel_channel_buffer_ops *ops; |
85a9ca7f MD |
425 | }; |
426 | ||
114667d5 MD |
427 | #define LTTNG_DYNAMIC_LEN_STACK_SIZE 128 |
428 | ||
429 | struct lttng_dynamic_len_stack { | |
430 | size_t stack[LTTNG_DYNAMIC_LEN_STACK_SIZE]; | |
431 | size_t offset; | |
432 | }; | |
433 | ||
434 | DECLARE_PER_CPU(struct lttng_dynamic_len_stack, lttng_dynamic_len_stack); | |
e0130fab MD |
435 | |
436 | /* | |
a2fa977a | 437 | * struct lttng_kernel_id_tracker declared in header due to deferencing of *v |
e0130fab MD |
438 | * in RCU_INITIALIZER(v). |
439 | */ | |
d1f652f8 MD |
440 | #define LTTNG_ID_HASH_BITS 6 |
441 | #define LTTNG_ID_TABLE_SIZE (1 << LTTNG_ID_HASH_BITS) | |
e0130fab | 442 | |
a2fa977a | 443 | struct lttng_kernel_id_tracker_rcu { |
d1f652f8 MD |
444 | struct hlist_head id_hash[LTTNG_ID_TABLE_SIZE]; |
445 | }; | |
446 | ||
a2fa977a MD |
447 | struct lttng_kernel_id_tracker { |
448 | struct lttng_kernel_id_tracker_private *priv; /* Private API */ | |
449 | ||
450 | struct lttng_kernel_id_tracker_rcu *p; /* RCU dereferenced. */ | |
e0130fab MD |
451 | }; |
452 | ||
a40e3229 MD |
453 | struct lttng_kernel_session_private; |
454 | ||
455 | struct lttng_kernel_session { | |
456 | struct lttng_kernel_session_private *priv; /* Private session interface */ | |
457 | ||
85a9ca7f | 458 | int active; /* Is trace session active ? */ |
a40e3229 | 459 | |
a2fa977a MD |
460 | struct lttng_kernel_id_tracker pid_tracker; |
461 | struct lttng_kernel_id_tracker vpid_tracker; | |
462 | struct lttng_kernel_id_tracker uid_tracker; | |
463 | struct lttng_kernel_id_tracker vuid_tracker; | |
464 | struct lttng_kernel_id_tracker gid_tracker; | |
465 | struct lttng_kernel_id_tracker vgid_tracker; | |
85a9ca7f MD |
466 | }; |
467 | ||
c93ed3b0 MD |
468 | int lttng_kernel_probe_register(struct lttng_kernel_probe_desc *desc); |
469 | void lttng_kernel_probe_unregister(struct lttng_kernel_probe_desc *desc); | |
d83004aa | 470 | |
a2fa977a | 471 | bool lttng_id_tracker_lookup(struct lttng_kernel_id_tracker_rcu *p, int id); |
271b6681 | 472 | |
a90917c3 | 473 | #endif /* _LTTNG_EVENTS_H */ |