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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 | |
a90917c3 MD |
28 | struct lttng_channel; |
29 | struct lttng_session; | |
d83004aa | 30 | struct lttng_metadata_cache; |
1c25284c | 31 | struct lib_ring_buffer_ctx; |
ba1f5986 | 32 | struct perf_event; |
833ad6a0 | 33 | struct perf_event_attr; |
3b731ab1 | 34 | struct lib_ring_buffer_config; |
4e3c1b9b | 35 | |
c0edae1d MD |
36 | /* Type description */ |
37 | ||
12bb2edb MD |
38 | enum lttng_kernel_type { |
39 | lttng_kernel_type_integer, | |
40 | lttng_kernel_type_string, | |
437d5aa5 MD |
41 | lttng_kernel_type_enum, |
42 | lttng_kernel_type_array, | |
43 | lttng_kernel_type_sequence, | |
44 | lttng_kernel_type_struct, | |
45 | lttng_kernel_type_variant, | |
12bb2edb | 46 | NR_LTTNG_KERNEL_TYPES, |
c0edae1d MD |
47 | }; |
48 | ||
28cbcb59 MD |
49 | enum lttng_kernel_string_encoding { |
50 | lttng_kernel_string_encoding_none = 0, | |
51 | lttng_kernel_string_encoding_UTF8 = 1, | |
52 | lttng_kernel_string_encoding_ASCII = 2, | |
53 | NR_LTTNG_KERNEL_STRING_ENCODING, | |
c0edae1d MD |
54 | }; |
55 | ||
d83004aa JD |
56 | enum channel_type { |
57 | PER_CPU_CHANNEL, | |
58 | METADATA_CHANNEL, | |
59 | }; | |
60 | ||
a28cc520 | 61 | struct lttng_kernel_enum_value { |
141ddf28 MD |
62 | unsigned long long value; |
63 | unsigned int signedness:1; | |
64 | }; | |
65 | ||
a28cc520 MD |
66 | struct lttng_kernel_enum_entry { |
67 | struct lttng_kernel_enum_value start, end; /* start and end are inclusive */ | |
c0edae1d | 68 | const char *string; |
08ad1061 PP |
69 | struct { |
70 | unsigned int is_auto:1; | |
71 | } options; | |
c0edae1d MD |
72 | }; |
73 | ||
437d5aa5 MD |
74 | /* |
75 | * struct lttng_kernel_type_common is fixed-size. Its children inherits | |
76 | * from it by embedding struct lttng_kernel_type_common as its first field. | |
77 | */ | |
78 | struct lttng_kernel_type_common { | |
79 | enum lttng_kernel_type type; | |
80 | }; | |
81 | ||
82 | struct lttng_kernel_type_integer { | |
83 | struct lttng_kernel_type_common parent; | |
c099397a MD |
84 | unsigned int size; /* in bits */ |
85 | unsigned short alignment; /* in bits */ | |
9cccf98a MD |
86 | unsigned int signedness:1, |
87 | reverse_byte_order:1; | |
e0a7a7c4 | 88 | unsigned int base; /* 2, 8, 10, 16, for pretty print */ |
437d5aa5 MD |
89 | }; |
90 | ||
91 | struct lttng_kernel_type_string { | |
92 | struct lttng_kernel_type_common parent; | |
28cbcb59 | 93 | enum lttng_kernel_string_encoding encoding; |
c099397a MD |
94 | }; |
95 | ||
437d5aa5 MD |
96 | struct lttng_kernel_type_enum { |
97 | struct lttng_kernel_type_common parent; | |
98 | const struct lttng_kernel_enum_desc *desc; /* Enumeration mapping */ | |
99 | const struct lttng_kernel_type_common *container_type; | |
100 | }; | |
101 | ||
102 | struct lttng_kernel_type_array { | |
103 | struct lttng_kernel_type_common parent; | |
104 | const struct lttng_kernel_type_common *elem_type; | |
105 | unsigned int length; /* Num. elems. */ | |
106 | unsigned int alignment; | |
107 | enum lttng_kernel_string_encoding encoding; | |
108 | }; | |
109 | ||
110 | struct lttng_kernel_type_sequence { | |
111 | struct lttng_kernel_type_common parent; | |
51ef4536 | 112 | const char *length_name; /* Length field name. If NULL, use previous field. */ |
437d5aa5 MD |
113 | const struct lttng_kernel_type_common *elem_type; |
114 | unsigned int alignment; /* Alignment before elements. */ | |
115 | enum lttng_kernel_string_encoding encoding; | |
116 | }; | |
117 | ||
118 | struct lttng_kernel_type_struct { | |
119 | struct lttng_kernel_type_common parent; | |
120 | unsigned int nr_fields; | |
121 | const struct lttng_kernel_event_field **fields; /* Array of pointers to fields. */ | |
122 | unsigned int alignment; | |
123 | }; | |
124 | ||
125 | struct lttng_kernel_type_variant { | |
126 | struct lttng_kernel_type_common parent; | |
51ef4536 | 127 | const char *tag_name; /* Tag field name. If NULL, use previous field. */ |
437d5aa5 MD |
128 | const struct lttng_kernel_event_field **choices; /* Array of pointers to fields. */ |
129 | unsigned int nr_choices; | |
130 | unsigned int alignment; | |
c099397a MD |
131 | }; |
132 | ||
d96a4a7a | 133 | struct lttng_kernel_enum_desc { |
c099397a | 134 | const char *name; |
437d5aa5 | 135 | const struct lttng_kernel_enum_entry **entries; |
141ddf28 | 136 | unsigned int nr_entries; |
c099397a | 137 | }; |
c0edae1d MD |
138 | |
139 | /* Event field description */ | |
140 | ||
437d5aa5 | 141 | struct lttng_kernel_event_field { |
c0edae1d | 142 | const char *name; |
437d5aa5 | 143 | const struct lttng_kernel_type_common *type; |
f127e61e | 144 | unsigned int nowrite:1, /* do not write into trace */ |
ceabb767 MD |
145 | user:1, /* fetch from user-space */ |
146 | nofilter:1; /* do not consider for filter */ | |
c0edae1d MD |
147 | }; |
148 | ||
437d5aa5 MD |
149 | #define lttng_kernel_static_type_integer(_size, _alignment, _signedness, _byte_order, _base) \ |
150 | ((const struct lttng_kernel_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_type_integer, { \ | |
151 | .parent = { \ | |
152 | .type = lttng_kernel_type_integer, \ | |
153 | }, \ | |
154 | .size = (_size), \ | |
155 | .alignment = (_alignment), \ | |
156 | .signedness = (_signedness), \ | |
157 | .reverse_byte_order = (_byte_order) != __BYTE_ORDER, \ | |
158 | .base = (_base), \ | |
159 | })) | |
160 | ||
161 | #define lttng_kernel_static_type_integer_from_type(_type, _byte_order, _base) \ | |
162 | lttng_kernel_static_type_integer(sizeof(_type) * CHAR_BIT, \ | |
163 | lttng_alignof(_type) * CHAR_BIT, \ | |
164 | lttng_is_signed_type(_type), \ | |
165 | _byte_order, \ | |
166 | _base) | |
167 | ||
168 | #define lttng_kernel_static_type_enum(_desc, _container_type) \ | |
169 | ((const struct lttng_kernel_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_type_enum, { \ | |
170 | .parent = { \ | |
171 | .type = lttng_kernel_type_enum, \ | |
172 | }, \ | |
173 | .desc = (_desc), \ | |
174 | .container_type = (_container_type), \ | |
175 | })) | |
176 | ||
177 | #define lttng_kernel_static_type_array(_length, _elem_type, _alignment, _encoding) \ | |
178 | ((const struct lttng_kernel_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_type_array, { \ | |
179 | .parent = { \ | |
180 | .type = lttng_kernel_type_array, \ | |
181 | }, \ | |
182 | .length = (_length), \ | |
183 | .alignment = (_alignment), \ | |
184 | .encoding = lttng_kernel_string_encoding_##_encoding, \ | |
185 | .elem_type = (_elem_type), \ | |
186 | })) | |
187 | ||
188 | #define lttng_kernel_static_type_array_text(_length) \ | |
189 | lttng_kernel_static_type_array(_length, \ | |
190 | lttng_kernel_static_type_integer(sizeof(char) * CHAR_BIT, \ | |
191 | lttng_alignof(char) * CHAR_BIT, lttng_is_signed_type(char), \ | |
192 | __BYTE_ORDER, 10), \ | |
193 | 0, UTF8) | |
194 | ||
195 | #define lttng_kernel_static_type_sequence(_length_name, _elem_type, _alignment, _encoding) \ | |
196 | ((const struct lttng_kernel_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_type_sequence, { \ | |
197 | .parent = { \ | |
198 | .type = lttng_kernel_type_sequence, \ | |
199 | }, \ | |
200 | .length_name = (_length_name), \ | |
201 | .alignment = (_alignment), \ | |
202 | .encoding = lttng_kernel_string_encoding_##_encoding, \ | |
203 | .elem_type = (_elem_type), \ | |
204 | })) | |
205 | ||
206 | #define lttng_kernel_static_type_string(_encoding) \ | |
207 | ((const struct lttng_kernel_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_type_string, { \ | |
208 | .parent = { \ | |
209 | .type = lttng_kernel_type_string, \ | |
210 | }, \ | |
211 | .encoding = lttng_kernel_string_encoding_##_encoding, \ | |
212 | })) | |
213 | ||
214 | #define lttng_kernel_static_type_struct(_nr_fields, _fields, _alignment) \ | |
215 | ((const struct lttng_kernel_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_type_struct, { \ | |
216 | .parent = { \ | |
217 | .type = lttng_kernel_type_struct, \ | |
218 | }, \ | |
219 | .nr_fields = (_nr_fields), \ | |
220 | .fields = _fields, \ | |
221 | .alignment = (_alignment), \ | |
222 | })) | |
223 | ||
224 | #define lttng_kernel_static_type_variant(_nr_choices, _choices, _tag_name, _alignment) \ | |
225 | ((const struct lttng_kernel_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_type_variant, { \ | |
226 | .parent = { \ | |
227 | .type = lttng_kernel_type_variant, \ | |
228 | }, \ | |
229 | .tag_name = (_tag_name), \ | |
230 | .choices = _choices, \ | |
231 | .nr_choices = (_nr_choices), \ | |
232 | .alignment = (_alignment), \ | |
233 | })) | |
234 | ||
235 | #define lttng_kernel_static_event_field(_name, _type, _nowrite, _user, _nofilter) \ | |
236 | __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_event_field, { \ | |
237 | .name = (_name), \ | |
238 | .type = (_type), \ | |
239 | .nowrite = (_nowrite), \ | |
240 | .user = (_user), \ | |
241 | .nofilter = (_nofilter), \ | |
242 | }) | |
243 | ||
244 | #define lttng_kernel_static_event_field_array(_fields...) \ | |
245 | __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_event_field *, \ | |
246 | _fields \ | |
247 | ) | |
248 | ||
437d5aa5 MD |
249 | #define lttng_kernel_static_enum_entry_value(_string, _value) \ |
250 | __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_enum_entry, { \ | |
251 | .start = { \ | |
252 | .signedness = lttng_is_signed_type(__typeof__(_value)), \ | |
253 | .value = lttng_is_signed_type(__typeof__(_value)) ? \ | |
254 | (long long) (_value) : (_value), \ | |
255 | }, \ | |
256 | .end = { \ | |
257 | .signedness = lttng_is_signed_type(__typeof__(_value)), \ | |
258 | .value = lttng_is_signed_type(__typeof__(_value)) ? \ | |
259 | (long long) (_value) : (_value), \ | |
260 | }, \ | |
261 | .string = (_string), \ | |
262 | }), | |
263 | ||
264 | #define lttng_kernel_static_enum_entry_range(_string, _range_start, _range_end) \ | |
265 | __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_enum_entry, { \ | |
266 | .start = { \ | |
267 | .signedness = lttng_is_signed_type(__typeof__(_range_start)), \ | |
268 | .value = lttng_is_signed_type(__typeof__(_range_start)) ? \ | |
269 | (long long) (_range_start) : (_range_start), \ | |
270 | }, \ | |
271 | .end = { \ | |
272 | .signedness = lttng_is_signed_type(__typeof__(_range_end)), \ | |
273 | .value = lttng_is_signed_type(__typeof__(_range_end)) ? \ | |
274 | (long long) (_range_end) : (_range_end), \ | |
275 | }, \ | |
276 | .string = (_string), \ | |
277 | }), | |
278 | ||
279 | #define lttng_kernel_static_enum_entry_auto(_string) \ | |
280 | __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_enum_entry, { \ | |
281 | .start = { \ | |
282 | .signedness = -1, \ | |
283 | .value = -1, \ | |
284 | }, \ | |
285 | .end = { \ | |
286 | .signedness = -1, \ | |
287 | .value = -1, \ | |
288 | }, \ | |
289 | .string = (_string), \ | |
290 | .options = { \ | |
291 | .is_auto = 1, \ | |
292 | } \ | |
293 | }), | |
294 | ||
a92e844e | 295 | struct lttng_kernel_probe_ctx { |
e2d5dbc7 | 296 | struct lttng_kernel_event_common *event; |
79150a49 JD |
297 | uint8_t interruptible; |
298 | }; | |
299 | ||
437d5aa5 MD |
300 | struct lttng_kernel_event_desc { |
301 | const char *event_name; /* lttng-modules name */ | |
302 | const char *event_kname; /* Linux kernel name (tracepoints) */ | |
303 | const struct lttng_kernel_probe_desc *probe_desc; | |
304 | void (*probe_callback)(void); | |
305 | const struct lttng_kernel_event_field **fields; /* event payload */ | |
c0edae1d | 306 | unsigned int nr_fields; |
dc7f600a | 307 | struct module *owner; |
c0edae1d MD |
308 | }; |
309 | ||
437d5aa5 MD |
310 | struct lttng_kernel_probe_desc { |
311 | const char *provider_name; | |
312 | const struct lttng_kernel_event_desc **event_desc; | |
85a9ca7f MD |
313 | unsigned int nr_events; |
314 | struct list_head head; /* chain registered probes */ | |
3c997079 MD |
315 | struct list_head lazy_init_head; |
316 | int lazy; /* lazy registration */ | |
85a9ca7f MD |
317 | }; |
318 | ||
7371f44c MD |
319 | struct lttng_krp; /* Kretprobe handling */ |
320 | ||
3c997079 MD |
321 | /* |
322 | * Objects in a linked-list of enablers, owned by an event. | |
323 | */ | |
324 | struct lttng_enabler_ref { | |
325 | struct list_head node; /* enabler ref list */ | |
326 | struct lttng_enabler *ref; /* backward ref */ | |
327 | }; | |
328 | ||
3aed4dca | 329 | struct lttng_uprobe_handler { |
e2d5dbc7 | 330 | struct lttng_kernel_event_common *event; |
3aed4dca FD |
331 | loff_t offset; |
332 | struct uprobe_consumer up_consumer; | |
333 | struct list_head node; | |
334 | }; | |
335 | ||
8bf17deb FD |
336 | struct lttng_kprobe { |
337 | struct kprobe kp; | |
338 | char *symbol_name; | |
339 | }; | |
340 | ||
83b802dc FD |
341 | struct lttng_uprobe { |
342 | struct inode *inode; | |
343 | struct list_head head; | |
344 | }; | |
345 | ||
badfe9f5 MD |
346 | enum lttng_syscall_entryexit { |
347 | LTTNG_SYSCALL_ENTRY, | |
348 | LTTNG_SYSCALL_EXIT, | |
349 | }; | |
350 | ||
351 | enum lttng_syscall_abi { | |
352 | LTTNG_SYSCALL_ABI_NATIVE, | |
353 | LTTNG_SYSCALL_ABI_COMPAT, | |
354 | }; | |
355 | ||
8a445457 MD |
356 | /* |
357 | * Result of the run_filter() callback. | |
358 | */ | |
359 | enum lttng_kernel_event_filter_result { | |
360 | LTTNG_KERNEL_EVENT_FILTER_ACCEPT = 0, | |
361 | LTTNG_KERNEL_EVENT_FILTER_REJECT = 1, | |
362 | }; | |
363 | ||
a67ba386 MD |
364 | struct lttng_kernel_event_common_private; |
365 | ||
366 | enum lttng_kernel_event_type { | |
367 | LTTNG_KERNEL_EVENT_TYPE_RECORDER = 0, | |
368 | LTTNG_KERNEL_EVENT_TYPE_NOTIFIER = 1, | |
369 | }; | |
370 | ||
371 | struct lttng_kernel_event_common { | |
372 | struct lttng_kernel_event_common_private *priv; /* Private event interface */ | |
373 | ||
374 | enum lttng_kernel_event_type type; | |
375 | /* Get child with container_of(). */ | |
376 | ||
e64957da | 377 | int enabled; |
a67ba386 | 378 | int eval_filter; /* Need to evaluate filters */ |
8a445457 | 379 | int (*run_filter)(const struct lttng_kernel_event_common *event, |
a67ba386 | 380 | const char *stack_data, |
a92e844e | 381 | struct lttng_kernel_probe_ctx *probe_ctx, |
a67ba386 | 382 | void *filter_ctx); |
3c997079 MD |
383 | }; |
384 | ||
a67ba386 MD |
385 | struct lttng_kernel_event_recorder_private; |
386 | ||
387 | struct lttng_kernel_event_recorder { | |
388 | struct lttng_kernel_event_common parent; | |
389 | struct lttng_kernel_event_recorder_private *priv; /* Private event record interface */ | |
390 | ||
391 | struct lttng_channel *chan; | |
c3eddb2e MD |
392 | }; |
393 | ||
a67ba386 MD |
394 | struct lttng_kernel_notification_ctx { |
395 | int eval_capture; /* Capture evaluation available. */ | |
396 | }; | |
dffef45d | 397 | |
a67ba386 | 398 | struct lttng_kernel_event_notifier_private; |
8a8ac9a8 | 399 | |
a67ba386 MD |
400 | struct lttng_kernel_event_notifier { |
401 | struct lttng_kernel_event_common parent; | |
402 | struct lttng_kernel_event_notifier_private *priv; /* Private event notifier interface */ | |
dffef45d | 403 | |
a67ba386 MD |
404 | int eval_capture; /* Need to evaluate capture */ |
405 | void (*notification_send)(struct lttng_kernel_event_notifier *event_notifier, | |
a67ba386 | 406 | const char *stack_data, |
a92e844e | 407 | struct lttng_kernel_probe_ctx *probe_ctx, |
a67ba386 | 408 | struct lttng_kernel_notification_ctx *notif_ctx); |
dffef45d FD |
409 | }; |
410 | ||
3b861b22 FD |
411 | enum lttng_enabler_format_type { |
412 | LTTNG_ENABLER_FORMAT_STAR_GLOB, | |
413 | LTTNG_ENABLER_FORMAT_NAME, | |
3c997079 MD |
414 | }; |
415 | ||
a90917c3 | 416 | struct lttng_channel_ops { |
85a9ca7f | 417 | struct channel *(*channel_create)(const char *name, |
5cf4b87c | 418 | void *priv, |
85a9ca7f MD |
419 | void *buf_addr, |
420 | size_t subbuf_size, size_t num_subbuf, | |
421 | unsigned int switch_timer_interval, | |
422 | unsigned int read_timer_interval); | |
423 | void (*channel_destroy)(struct channel *chan); | |
424 | struct lib_ring_buffer *(*buffer_read_open)(struct channel *chan); | |
f71ecafa | 425 | int (*buffer_has_read_closed_stream)(struct channel *chan); |
85a9ca7f | 426 | void (*buffer_read_close)(struct lib_ring_buffer *buf); |
c2fb9c1c | 427 | int (*event_reserve)(struct lib_ring_buffer_ctx *ctx); |
85a9ca7f MD |
428 | void (*event_commit)(struct lib_ring_buffer_ctx *ctx); |
429 | void (*event_write)(struct lib_ring_buffer_ctx *ctx, const void *src, | |
430 | size_t len); | |
4ea00e4f JD |
431 | void (*event_write_from_user)(struct lib_ring_buffer_ctx *ctx, |
432 | const void *src, size_t len); | |
58aa5d24 MD |
433 | void (*event_memset)(struct lib_ring_buffer_ctx *ctx, |
434 | int c, size_t len); | |
16f78f3a MD |
435 | void (*event_strcpy)(struct lib_ring_buffer_ctx *ctx, const char *src, |
436 | size_t len); | |
437 | void (*event_strcpy_from_user)(struct lib_ring_buffer_ctx *ctx, | |
438 | const char __user *src, size_t len); | |
1ec3f75a MD |
439 | /* |
440 | * packet_avail_size returns the available size in the current | |
441 | * packet. Note that the size returned is only a hint, since it | |
442 | * may change due to concurrent writes. | |
443 | */ | |
444 | size_t (*packet_avail_size)(struct channel *chan); | |
71c1d843 | 445 | wait_queue_head_t *(*get_writer_buf_wait_queue)(struct channel *chan, int cpu); |
24cedcfe MD |
446 | wait_queue_head_t *(*get_hp_wait_queue)(struct channel *chan); |
447 | int (*is_finalized)(struct channel *chan); | |
254ec7bc | 448 | int (*is_disabled)(struct channel *chan); |
3b731ab1 JD |
449 | int (*timestamp_begin) (const struct lib_ring_buffer_config *config, |
450 | struct lib_ring_buffer *bufb, | |
451 | uint64_t *timestamp_begin); | |
452 | int (*timestamp_end) (const struct lib_ring_buffer_config *config, | |
453 | struct lib_ring_buffer *bufb, | |
454 | uint64_t *timestamp_end); | |
455 | int (*events_discarded) (const struct lib_ring_buffer_config *config, | |
456 | struct lib_ring_buffer *bufb, | |
457 | uint64_t *events_discarded); | |
458 | int (*content_size) (const struct lib_ring_buffer_config *config, | |
459 | struct lib_ring_buffer *bufb, | |
460 | uint64_t *content_size); | |
461 | int (*packet_size) (const struct lib_ring_buffer_config *config, | |
462 | struct lib_ring_buffer *bufb, | |
463 | uint64_t *packet_size); | |
464 | int (*stream_id) (const struct lib_ring_buffer_config *config, | |
465 | struct lib_ring_buffer *bufb, | |
466 | uint64_t *stream_id); | |
2348ca17 JD |
467 | int (*current_timestamp) (const struct lib_ring_buffer_config *config, |
468 | struct lib_ring_buffer *bufb, | |
469 | uint64_t *ts); | |
5b3cf4f9 JD |
470 | int (*sequence_number) (const struct lib_ring_buffer_config *config, |
471 | struct lib_ring_buffer *bufb, | |
472 | uint64_t *seq); | |
5594698f JD |
473 | int (*instance_id) (const struct lib_ring_buffer_config *config, |
474 | struct lib_ring_buffer *bufb, | |
475 | uint64_t *id); | |
85a9ca7f MD |
476 | }; |
477 | ||
a101fa10 MD |
478 | struct lttng_counter_ops { |
479 | struct lib_counter *(*counter_create)(size_t nr_dimensions, | |
480 | const size_t *max_nr_elem, /* for each dimension */ | |
481 | int64_t global_sum_step); | |
482 | void (*counter_destroy)(struct lib_counter *counter); | |
483 | int (*counter_add)(struct lib_counter *counter, const size_t *dimension_indexes, | |
484 | int64_t v); | |
485 | /* | |
486 | * counter_read reads a specific cpu's counter if @cpu >= 0, or | |
487 | * the global aggregation counter if @cpu == -1. | |
488 | */ | |
489 | int (*counter_read)(struct lib_counter *counter, const size_t *dimension_indexes, int cpu, | |
490 | int64_t *value, bool *overflow, bool *underflow); | |
491 | /* | |
492 | * counter_aggregate returns the total sum of all per-cpu counters and | |
493 | * the global aggregation counter. | |
494 | */ | |
495 | int (*counter_aggregate)(struct lib_counter *counter, const size_t *dimension_indexes, | |
496 | int64_t *value, bool *overflow, bool *underflow); | |
497 | int (*counter_clear)(struct lib_counter *counter, const size_t *dimension_indexes); | |
498 | }; | |
499 | ||
a90917c3 | 500 | struct lttng_transport { |
a33c9927 MD |
501 | char *name; |
502 | struct module *owner; | |
503 | struct list_head node; | |
a90917c3 | 504 | struct lttng_channel_ops ops; |
a33c9927 MD |
505 | }; |
506 | ||
a101fa10 MD |
507 | struct lttng_counter_transport { |
508 | char *name; | |
509 | struct module *owner; | |
510 | struct list_head node; | |
511 | struct lttng_counter_ops ops; | |
512 | }; | |
513 | ||
80f87dd2 MD |
514 | struct lttng_syscall_filter; |
515 | ||
3c997079 MD |
516 | #define LTTNG_EVENT_HT_BITS 12 |
517 | #define LTTNG_EVENT_HT_SIZE (1U << LTTNG_EVENT_HT_BITS) | |
518 | ||
519 | struct lttng_event_ht { | |
520 | struct hlist_head table[LTTNG_EVENT_HT_SIZE]; | |
521 | }; | |
522 | ||
dffef45d FD |
523 | #define LTTNG_EVENT_NOTIFIER_HT_BITS 12 |
524 | #define LTTNG_EVENT_NOTIFIER_HT_SIZE (1U << LTTNG_EVENT_NOTIFIER_HT_BITS) | |
525 | ||
526 | struct lttng_event_notifier_ht { | |
527 | struct hlist_head table[LTTNG_EVENT_NOTIFIER_HT_SIZE]; | |
528 | }; | |
529 | ||
a90917c3 | 530 | struct lttng_channel { |
c099397a | 531 | unsigned int id; |
85a9ca7f | 532 | struct channel *chan; /* Channel buffers */ |
e64957da | 533 | int enabled; |
437d5aa5 | 534 | struct lttng_kernel_ctx *ctx; |
85a9ca7f | 535 | /* Event ID management */ |
a90917c3 | 536 | struct lttng_session *session; |
85a9ca7f MD |
537 | struct file *file; /* File associated to channel */ |
538 | unsigned int free_event_id; /* Next event ID to allocate */ | |
539 | struct list_head list; /* Channel list */ | |
a90917c3 MD |
540 | struct lttng_channel_ops *ops; |
541 | struct lttng_transport *transport; | |
3b82c4e1 MD |
542 | struct hlist_head *sc_table; /* for syscall tracing */ |
543 | struct hlist_head *compat_sc_table; | |
544 | struct hlist_head *sc_exit_table; /* for syscall exit tracing */ | |
545 | struct hlist_head *compat_sc_exit_table; | |
546 | struct hlist_head sc_unknown; /* for unknown syscalls */ | |
547 | struct hlist_head sc_compat_unknown; | |
548 | struct hlist_head sc_exit_unknown; | |
549 | struct hlist_head compat_sc_exit_unknown; | |
80f87dd2 | 550 | struct lttng_syscall_filter *sc_filter; |
9115fbdc | 551 | int header_type; /* 0: unset, 1: compact, 2: large */ |
d83004aa | 552 | enum channel_type channel_type; |
3b82c4e1 MD |
553 | int syscall_all_entry; |
554 | int syscall_all_exit; | |
80f87dd2 MD |
555 | unsigned int metadata_dumped:1, |
556 | sys_enter_registered:1, | |
557 | sys_exit_registered:1, | |
3c997079 | 558 | tstate:1; /* Transient enable state */ |
85a9ca7f MD |
559 | }; |
560 | ||
d83004aa JD |
561 | struct lttng_metadata_stream { |
562 | void *priv; /* Ring buffer private data */ | |
563 | struct lttng_metadata_cache *metadata_cache; | |
f613e3e6 MD |
564 | unsigned int metadata_in; /* Bytes read from the cache */ |
565 | unsigned int metadata_out; /* Bytes consumed from stream */ | |
d83004aa JD |
566 | int finalized; /* Has channel been finalized */ |
567 | wait_queue_head_t read_wait; /* Reader buffer-level wait queue */ | |
568 | struct list_head list; /* Stream list */ | |
b3b8072b | 569 | struct lttng_transport *transport; |
9616f0bf | 570 | uint64_t version; /* Current version of the metadata cache */ |
8b97fd42 | 571 | bool coherent; /* Stream in a coherent state */ |
d83004aa JD |
572 | }; |
573 | ||
114667d5 MD |
574 | #define LTTNG_DYNAMIC_LEN_STACK_SIZE 128 |
575 | ||
576 | struct lttng_dynamic_len_stack { | |
577 | size_t stack[LTTNG_DYNAMIC_LEN_STACK_SIZE]; | |
578 | size_t offset; | |
579 | }; | |
580 | ||
581 | DECLARE_PER_CPU(struct lttng_dynamic_len_stack, lttng_dynamic_len_stack); | |
e0130fab MD |
582 | |
583 | /* | |
d1f652f8 | 584 | * struct lttng_id_tracker declared in header due to deferencing of *v |
e0130fab MD |
585 | * in RCU_INITIALIZER(v). |
586 | */ | |
d1f652f8 MD |
587 | #define LTTNG_ID_HASH_BITS 6 |
588 | #define LTTNG_ID_TABLE_SIZE (1 << LTTNG_ID_HASH_BITS) | |
e0130fab | 589 | |
d1f652f8 MD |
590 | enum tracker_type { |
591 | TRACKER_PID, | |
592 | TRACKER_VPID, | |
593 | TRACKER_UID, | |
594 | TRACKER_VUID, | |
595 | TRACKER_GID, | |
596 | TRACKER_VGID, | |
597 | ||
598 | TRACKER_UNKNOWN, | |
599 | }; | |
600 | ||
601 | struct lttng_id_tracker_rcu { | |
602 | struct hlist_head id_hash[LTTNG_ID_TABLE_SIZE]; | |
603 | }; | |
604 | ||
605 | struct lttng_id_tracker { | |
606 | struct lttng_session *session; | |
607 | enum tracker_type tracker_type; | |
608 | struct lttng_id_tracker_rcu *p; /* RCU dereferenced. */ | |
e0130fab MD |
609 | }; |
610 | ||
d1f652f8 | 611 | struct lttng_id_hash_node { |
7e6f9ef6 | 612 | struct hlist_node hlist; |
d1f652f8 | 613 | int id; |
7e6f9ef6 MD |
614 | }; |
615 | ||
a90917c3 | 616 | struct lttng_session { |
85a9ca7f | 617 | int active; /* Is trace session active ? */ |
8070f5c0 | 618 | int been_active; /* Has trace session been active ? */ |
85a9ca7f MD |
619 | struct file *file; /* File associated to session */ |
620 | struct list_head chan; /* Channel list head */ | |
621 | struct list_head events; /* Event list head */ | |
622 | struct list_head list; /* Session list */ | |
c099397a | 623 | unsigned int free_chan_id; /* Next chan ID to allocate */ |
d793d5e1 | 624 | uuid_le uuid; /* Trace session unique ID */ |
d83004aa | 625 | struct lttng_metadata_cache *metadata_cache; |
d1f652f8 MD |
626 | struct lttng_id_tracker pid_tracker; |
627 | struct lttng_id_tracker vpid_tracker; | |
628 | struct lttng_id_tracker uid_tracker; | |
629 | struct lttng_id_tracker vuid_tracker; | |
630 | struct lttng_id_tracker gid_tracker; | |
631 | struct lttng_id_tracker vgid_tracker; | |
3c997079 MD |
632 | unsigned int metadata_dumped:1, |
633 | tstate:1; /* Transient enable state */ | |
b2bc0bc8 | 634 | /* List of event enablers */ |
3c997079 MD |
635 | struct list_head enablers_head; |
636 | /* Hash table of events */ | |
637 | struct lttng_event_ht events_ht; | |
606828e4 MD |
638 | char name[LTTNG_KERNEL_ABI_SESSION_NAME_LEN]; |
639 | char creation_time[LTTNG_KERNEL_ABI_SESSION_CREATION_TIME_ISO8601_LEN]; | |
85a9ca7f MD |
640 | }; |
641 | ||
99f52fcc FD |
642 | struct lttng_counter { |
643 | struct file *file; /* File associated to counter. */ | |
644 | struct file *owner; | |
645 | struct lttng_counter_transport *transport; | |
646 | struct lib_counter *counter; | |
647 | struct lttng_counter_ops *ops; | |
648 | }; | |
649 | ||
750b05f2 FD |
650 | struct lttng_event_notifier_group { |
651 | struct file *file; /* File associated to event notifier group */ | |
21f58fb7 | 652 | struct file *notif_file; /* File used to expose notifications to userspace. */ |
750b05f2 | 653 | struct list_head node; /* event notifier group list */ |
dffef45d FD |
654 | struct list_head enablers_head; /* List of enablers */ |
655 | struct list_head event_notifiers_head; /* List of event notifier */ | |
656 | struct lttng_event_notifier_ht event_notifiers_ht; /* Hash table of event notifiers */ | |
750b05f2 FD |
657 | struct lttng_channel_ops *ops; |
658 | struct lttng_transport *transport; | |
659 | struct channel *chan; /* Ring buffer channel for event notifier group. */ | |
660 | struct lib_ring_buffer *buf; /* Ring buffer for event notifier group. */ | |
21f58fb7 FD |
661 | wait_queue_head_t read_wait; |
662 | struct irq_work wakeup_pending; /* Pending wakeup irq work. */ | |
a67ba386 MD |
663 | struct lttng_kernel_event_notifier *sc_unknown; /* for unknown syscalls */ |
664 | struct lttng_kernel_event_notifier *sc_compat_unknown; | |
8a8ac9a8 FD |
665 | |
666 | struct lttng_syscall_filter *sc_filter; | |
667 | ||
668 | struct hlist_head *event_notifier_syscall_dispatch; | |
669 | struct hlist_head *event_notifier_compat_syscall_dispatch; | |
670 | struct hlist_head *event_notifier_exit_syscall_dispatch; | |
671 | struct hlist_head *event_notifier_exit_compat_syscall_dispatch; | |
672 | ||
673 | struct hlist_head event_notifier_unknown_syscall_dispatch; | |
674 | struct hlist_head event_notifier_compat_unknown_syscall_dispatch; | |
675 | struct hlist_head event_notifier_exit_unknown_syscall_dispatch; | |
676 | struct hlist_head event_notifier_exit_compat_unknown_syscall_dispatch; | |
677 | ||
678 | int syscall_all_entry; | |
679 | int syscall_all_exit; | |
680 | ||
681 | unsigned int sys_enter_registered:1, sys_exit_registered:1; | |
682 | ||
683 | struct lttng_counter *error_counter; | |
684 | size_t error_counter_len; | |
750b05f2 FD |
685 | }; |
686 | ||
d83004aa JD |
687 | struct lttng_metadata_cache { |
688 | char *data; /* Metadata cache */ | |
689 | unsigned int cache_alloc; /* Metadata allocated size (bytes) */ | |
690 | unsigned int metadata_written; /* Number of bytes written in metadata cache */ | |
3e75e2a7 | 691 | atomic_t producing; /* Metadata being produced (incomplete) */ |
d83004aa JD |
692 | struct kref refcount; /* Metadata cache usage */ |
693 | struct list_head metadata_stream; /* Metadata stream list */ | |
a36580d5 | 694 | uuid_le uuid; /* Trace session unique ID (copy) */ |
9616f0bf JD |
695 | struct mutex lock; /* Produce/consume lock */ |
696 | uint64_t version; /* Current version of the metadata */ | |
d83004aa JD |
697 | }; |
698 | ||
3c997079 MD |
699 | void lttng_lock_sessions(void); |
700 | void lttng_unlock_sessions(void); | |
701 | ||
702 | struct list_head *lttng_get_probe_list_head(void); | |
703 | ||
b2bc0bc8 FD |
704 | struct lttng_event_enabler *lttng_event_enabler_create( |
705 | enum lttng_enabler_format_type format_type, | |
606828e4 | 706 | struct lttng_kernel_abi_event *event_param, |
3c997079 MD |
707 | struct lttng_channel *chan); |
708 | ||
b2bc0bc8 FD |
709 | int lttng_event_enabler_enable(struct lttng_event_enabler *event_enabler); |
710 | int lttng_event_enabler_disable(struct lttng_event_enabler *event_enabler); | |
dffef45d FD |
711 | struct lttng_event_notifier_enabler *lttng_event_notifier_enabler_create( |
712 | struct lttng_event_notifier_group *event_notifier_group, | |
713 | enum lttng_enabler_format_type format_type, | |
606828e4 | 714 | struct lttng_kernel_abi_event_notifier *event_notifier_param); |
dffef45d FD |
715 | |
716 | int lttng_event_notifier_enabler_enable( | |
717 | struct lttng_event_notifier_enabler *event_notifier_enabler); | |
718 | int lttng_event_notifier_enabler_disable( | |
719 | struct lttng_event_notifier_enabler *event_notifier_enabler); | |
3c997079 | 720 | int lttng_fix_pending_events(void); |
b01155ba | 721 | int lttng_fix_pending_event_notifiers(void); |
3c997079 | 722 | int lttng_session_active(void); |
b01155ba | 723 | bool lttng_event_notifier_active(void); |
3c997079 | 724 | |
a90917c3 MD |
725 | struct lttng_session *lttng_session_create(void); |
726 | int lttng_session_enable(struct lttng_session *session); | |
727 | int lttng_session_disable(struct lttng_session *session); | |
728 | void lttng_session_destroy(struct lttng_session *session); | |
9616f0bf | 729 | int lttng_session_metadata_regenerate(struct lttng_session *session); |
601252cf | 730 | int lttng_session_statedump(struct lttng_session *session); |
d83004aa | 731 | void metadata_cache_destroy(struct kref *kref); |
4e3c1b9b | 732 | |
99f52fcc FD |
733 | struct lttng_counter *lttng_kernel_counter_create( |
734 | const char *counter_transport_name, size_t number_dimensions, | |
735 | const size_t *dimensions_sizes); | |
736 | int lttng_kernel_counter_read(struct lttng_counter *counter, | |
737 | const size_t *dimension_indexes, int32_t cpu, | |
738 | int64_t *val, bool *overflow, bool *underflow); | |
739 | int lttng_kernel_counter_aggregate(struct lttng_counter *counter, | |
740 | const size_t *dimension_indexes, int64_t *val, | |
741 | bool *overflow, bool *underflow); | |
742 | int lttng_kernel_counter_clear(struct lttng_counter *counter, | |
743 | const size_t *dimension_indexes); | |
744 | ||
745 | ||
750b05f2 | 746 | struct lttng_event_notifier_group *lttng_event_notifier_group_create(void); |
99f52fcc FD |
747 | int lttng_event_notifier_group_create_error_counter( |
748 | struct file *event_notifier_group_file, | |
606828e4 | 749 | const struct lttng_kernel_abi_counter_conf *error_counter_conf); |
750b05f2 FD |
750 | void lttng_event_notifier_group_destroy( |
751 | struct lttng_event_notifier_group *event_notifier_group); | |
752 | ||
a90917c3 | 753 | struct lttng_channel *lttng_channel_create(struct lttng_session *session, |
5dbbdb43 MD |
754 | const char *transport_name, |
755 | void *buf_addr, | |
756 | size_t subbuf_size, size_t num_subbuf, | |
757 | unsigned int switch_timer_interval, | |
d83004aa JD |
758 | unsigned int read_timer_interval, |
759 | enum channel_type channel_type); | |
a90917c3 | 760 | struct lttng_channel *lttng_global_channel_create(struct lttng_session *session, |
4e3c1b9b MD |
761 | int overwrite, void *buf_addr, |
762 | size_t subbuf_size, size_t num_subbuf, | |
763 | unsigned int switch_timer_interval, | |
764 | unsigned int read_timer_interval); | |
4e3c1b9b | 765 | |
d83004aa | 766 | void lttng_metadata_channel_destroy(struct lttng_channel *chan); |
a67ba386 | 767 | struct lttng_kernel_event_recorder *lttng_kernel_event_recorder_create(struct lttng_channel *chan, |
606828e4 | 768 | struct lttng_kernel_abi_event *event_param, |
437d5aa5 | 769 | const struct lttng_kernel_event_desc *event_desc, |
606828e4 | 770 | enum lttng_kernel_abi_instrumentation itype); |
a67ba386 | 771 | struct lttng_kernel_event_recorder *_lttng_kernel_event_recorder_create(struct lttng_channel *chan, |
606828e4 | 772 | struct lttng_kernel_abi_event *event_param, |
437d5aa5 | 773 | const struct lttng_kernel_event_desc *event_desc, |
606828e4 | 774 | enum lttng_kernel_abi_instrumentation itype); |
a67ba386 | 775 | struct lttng_kernel_event_recorder *lttng_event_compat_old_create(struct lttng_channel *chan, |
606828e4 | 776 | struct lttng_kernel_abi_old_event *old_event_param, |
437d5aa5 | 777 | const struct lttng_kernel_event_desc *internal_desc); |
c0e31d2e | 778 | |
a67ba386 | 779 | struct lttng_kernel_event_notifier *lttng_event_notifier_create( |
437d5aa5 | 780 | const struct lttng_kernel_event_desc *event_notifier_desc, |
dffef45d | 781 | uint64_t id, |
99f52fcc | 782 | uint64_t error_counter_idx, |
dffef45d | 783 | struct lttng_event_notifier_group *event_notifier_group, |
606828e4 | 784 | struct lttng_kernel_abi_event_notifier *event_notifier_param, |
606828e4 | 785 | enum lttng_kernel_abi_instrumentation itype); |
a67ba386 | 786 | struct lttng_kernel_event_notifier *_lttng_event_notifier_create( |
437d5aa5 | 787 | const struct lttng_kernel_event_desc *event_notifier_desc, |
dffef45d | 788 | uint64_t id, |
99f52fcc | 789 | uint64_t error_counter_idx, |
dffef45d | 790 | struct lttng_event_notifier_group *event_notifier_group, |
606828e4 | 791 | struct lttng_kernel_abi_event_notifier *event_notifier_param, |
606828e4 | 792 | enum lttng_kernel_abi_instrumentation itype); |
dffef45d | 793 | |
a90917c3 MD |
794 | int lttng_channel_enable(struct lttng_channel *channel); |
795 | int lttng_channel_disable(struct lttng_channel *channel); | |
9d993668 MD |
796 | int lttng_event_enable(struct lttng_kernel_event_common *event); |
797 | int lttng_event_disable(struct lttng_kernel_event_common *event); | |
2b16f0c9 | 798 | |
a90917c3 MD |
799 | void lttng_transport_register(struct lttng_transport *transport); |
800 | void lttng_transport_unregister(struct lttng_transport *transport); | |
11b5a3c2 | 801 | |
a101fa10 MD |
802 | void lttng_counter_transport_register(struct lttng_counter_transport *transport); |
803 | void lttng_counter_transport_unregister(struct lttng_counter_transport *transport); | |
804 | ||
360f38ea | 805 | void synchronize_trace(void); |
80996790 | 806 | int lttng_abi_init(void); |
6dccd6c1 | 807 | int lttng_abi_compat_old_init(void); |
80996790 | 808 | void lttng_abi_exit(void); |
6dccd6c1 | 809 | void lttng_abi_compat_old_exit(void); |
1c25284c | 810 | |
437d5aa5 MD |
811 | int lttng_probe_register(struct lttng_kernel_probe_desc *desc); |
812 | void lttng_probe_unregister(struct lttng_kernel_probe_desc *desc); | |
813 | const struct lttng_kernel_event_desc *lttng_event_desc_get(const char *name); | |
814 | void lttng_event_desc_put(const struct lttng_kernel_event_desc *desc); | |
a90917c3 MD |
815 | int lttng_probes_init(void); |
816 | void lttng_probes_exit(void); | |
1ec65de1 | 817 | |
b3b8072b | 818 | int lttng_metadata_output_channel(struct lttng_metadata_stream *stream, |
8b97fd42 | 819 | struct channel *chan, bool *coherent); |
d83004aa | 820 | |
d1f652f8 MD |
821 | int lttng_id_tracker_get_node_id(const struct lttng_id_hash_node *node); |
822 | int lttng_id_tracker_empty_set(struct lttng_id_tracker *lf); | |
823 | void lttng_id_tracker_destroy(struct lttng_id_tracker *lf, bool rcu); | |
824 | bool lttng_id_tracker_lookup(struct lttng_id_tracker_rcu *p, int id); | |
825 | int lttng_id_tracker_add(struct lttng_id_tracker *lf, int id); | |
826 | int lttng_id_tracker_del(struct lttng_id_tracker *lf, int id); | |
e0130fab | 827 | |
d1f652f8 MD |
828 | int lttng_session_track_id(struct lttng_session *session, |
829 | enum tracker_type tracker_type, int id); | |
830 | int lttng_session_untrack_id(struct lttng_session *session, | |
831 | enum tracker_type tracker_type, int id); | |
e0130fab | 832 | |
d1f652f8 MD |
833 | int lttng_session_list_tracker_ids(struct lttng_session *session, |
834 | enum tracker_type tracker_type); | |
7e6f9ef6 | 835 | |
2754583e MD |
836 | void lttng_clock_ref(void); |
837 | void lttng_clock_unref(void); | |
838 | ||
437d5aa5 | 839 | int lttng_desc_match_enabler(const struct lttng_kernel_event_desc *desc, |
8a8ac9a8 FD |
840 | struct lttng_enabler *enabler); |
841 | ||
3a523f5b | 842 | #if defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS) |
a67ba386 | 843 | int lttng_syscalls_register_event(struct lttng_event_enabler *event_enabler); |
3b82c4e1 | 844 | int lttng_syscalls_unregister_channel(struct lttng_channel *chan); |
2d6d88c6 | 845 | int lttng_syscalls_destroy_event(struct lttng_channel *chan); |
ade8a729 FD |
846 | int lttng_syscall_filter_enable_event( |
847 | struct lttng_channel *chan, | |
a67ba386 | 848 | struct lttng_kernel_event_recorder *event); |
ade8a729 FD |
849 | int lttng_syscall_filter_disable_event( |
850 | struct lttng_channel *chan, | |
a67ba386 | 851 | struct lttng_kernel_event_recorder *event); |
ade8a729 | 852 | |
12e579db | 853 | long lttng_channel_syscall_mask(struct lttng_channel *channel, |
606828e4 | 854 | struct lttng_kernel_abi_syscall_mask __user *usyscall_mask); |
2d6d88c6 | 855 | |
8a8ac9a8 | 856 | int lttng_syscalls_register_event_notifier( |
a67ba386 MD |
857 | struct lttng_event_notifier_enabler *event_notifier_enabler); |
858 | int lttng_syscalls_create_matching_event_notifiers( | |
859 | struct lttng_event_notifier_enabler *event_notifier_enabler); | |
3b82c4e1 | 860 | int lttng_syscalls_unregister_event_notifier_group(struct lttng_event_notifier_group *group); |
a67ba386 MD |
861 | int lttng_syscall_filter_enable_event_notifier(struct lttng_kernel_event_notifier *event_notifier); |
862 | int lttng_syscall_filter_disable_event_notifier(struct lttng_kernel_event_notifier *event_notifier); | |
1ec65de1 | 863 | #else |
2d6d88c6 | 864 | static inline int lttng_syscalls_register_event( |
a67ba386 | 865 | struct lttng_event_enabler *event_enabler) |
1ec65de1 MD |
866 | { |
867 | return -ENOSYS; | |
868 | } | |
869 | ||
3b82c4e1 | 870 | static inline int lttng_syscalls_unregister_channel(struct lttng_channel *chan) |
1ec65de1 MD |
871 | { |
872 | return 0; | |
873 | } | |
80f87dd2 | 874 | |
badfe9f5 MD |
875 | static inline int lttng_syscalls_destroy(struct lttng_channel *chan) |
876 | { | |
877 | return 0; | |
878 | } | |
879 | ||
2d6d88c6 | 880 | static inline int lttng_syscall_filter_enable_event(struct lttng_channel *chan, |
a67ba386 | 881 | struct lttng_kernel_event_recorder *event); |
80f87dd2 MD |
882 | { |
883 | return -ENOSYS; | |
884 | } | |
885 | ||
2d6d88c6 | 886 | static inline int lttng_syscall_filter_disable_event(struct lttng_channel *chan, |
a67ba386 | 887 | struct lttng_kernel_event_recorder *event); |
80f87dd2 MD |
888 | { |
889 | return -ENOSYS; | |
890 | } | |
12e579db | 891 | |
f127e61e | 892 | static inline long lttng_channel_syscall_mask(struct lttng_channel *channel, |
12e579db MD |
893 | struct lttng_kernel_syscall_mask __user *usyscall_mask) |
894 | { | |
895 | return -ENOSYS; | |
896 | } | |
dffef45d | 897 | |
8a8ac9a8 | 898 | static inline int lttng_syscalls_register_event_notifier( |
a67ba386 | 899 | struct lttng_event_notifier_group *group) |
8a8ac9a8 FD |
900 | { |
901 | return -ENOSYS; | |
902 | } | |
903 | ||
3b82c4e1 | 904 | static inline int lttng_syscalls_unregister_event_notifier_group( |
8a8ac9a8 FD |
905 | struct lttng_event_notifier_group *group) |
906 | { | |
907 | return 0; | |
908 | } | |
909 | ||
910 | static inline int lttng_syscall_filter_enable_event_notifier( | |
911 | struct lttng_event_notifier_group *group, | |
912 | const char *name) | |
913 | { | |
914 | return -ENOSYS; | |
915 | } | |
916 | ||
917 | static inline int lttng_syscall_filter_disable_event_notifier( | |
918 | struct lttng_event_notifier_group *group, | |
919 | const char *name) | |
920 | { | |
921 | return -ENOSYS; | |
922 | } | |
923 | ||
1ec65de1 MD |
924 | #endif |
925 | ||
183e8b3a | 926 | int lttng_event_enabler_attach_filter_bytecode(struct lttng_event_enabler *event_enabler, |
606828e4 | 927 | struct lttng_kernel_abi_filter_bytecode __user *bytecode); |
183e8b3a | 928 | int lttng_event_notifier_enabler_attach_filter_bytecode( |
dffef45d | 929 | struct lttng_event_notifier_enabler *event_notifier_enabler, |
606828e4 | 930 | struct lttng_kernel_abi_filter_bytecode __user *bytecode); |
99d223ad FD |
931 | int lttng_event_notifier_enabler_attach_capture_bytecode( |
932 | struct lttng_event_notifier_enabler *event_notifier_enabler, | |
606828e4 | 933 | struct lttng_kernel_abi_capture_bytecode __user *bytecode); |
2dfda770 | 934 | |
437d5aa5 MD |
935 | void lttng_enabler_link_bytecode(const struct lttng_kernel_event_desc *event_desc, |
936 | struct lttng_kernel_ctx *ctx, | |
60206944 FD |
937 | struct list_head *instance_bytecode_runtime_head, |
938 | struct list_head *enabler_bytecode_runtime_head); | |
0648898e | 939 | void lttng_free_event_filter_runtime(struct lttng_kernel_event_common *event); |
07dfc1d0 | 940 | |
114667d5 MD |
941 | int lttng_probes_init(void); |
942 | ||
0c956676 MD |
943 | int lttng_logger_init(void); |
944 | void lttng_logger_exit(void); | |
945 | ||
c337ddc2 MD |
946 | extern int lttng_statedump_start(struct lttng_session *session); |
947 | ||
acd614cc | 948 | #ifdef CONFIG_KPROBES |
8bf17deb | 949 | int lttng_kprobes_register_event(const char *name, |
f17701fb MD |
950 | const char *symbol_name, |
951 | uint64_t offset, | |
952 | uint64_t addr, | |
a67ba386 MD |
953 | struct lttng_kernel_event_recorder *event); |
954 | void lttng_kprobes_unregister_event(struct lttng_kernel_event_recorder *event); | |
955 | void lttng_kprobes_destroy_event_private(struct lttng_kernel_event_recorder *event); | |
2b16f0c9 FD |
956 | int lttng_kprobes_register_event_notifier(const char *symbol_name, |
957 | uint64_t offset, | |
958 | uint64_t addr, | |
a67ba386 MD |
959 | struct lttng_kernel_event_notifier *event_notifier); |
960 | void lttng_kprobes_unregister_event_notifier(struct lttng_kernel_event_notifier *event_notifier); | |
961 | void lttng_kprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier *event_notifier); | |
acd614cc MD |
962 | #else |
963 | static inline | |
8bf17deb | 964 | int lttng_kprobes_register_event(const char *name, |
acd614cc MD |
965 | const char *symbol_name, |
966 | uint64_t offset, | |
967 | uint64_t addr, | |
a67ba386 | 968 | struct lttng_kernel_event_recorder *event) |
acd614cc MD |
969 | { |
970 | return -ENOSYS; | |
971 | } | |
972 | ||
25f53c39 | 973 | static inline |
a67ba386 | 974 | void lttng_kprobes_unregister_event(struct lttng_kernel_event_recorder *event) |
8bf17deb FD |
975 | { |
976 | } | |
977 | ||
978 | static inline | |
a67ba386 | 979 | void lttng_kprobes_destroy_event_private(struct lttng_kernel_event_recorder *event) |
acd614cc MD |
980 | { |
981 | } | |
edeb3137 MD |
982 | |
983 | static inline | |
2b16f0c9 FD |
984 | int lttng_kprobes_register_event_notifier(const char *symbol_name, |
985 | uint64_t offset, | |
986 | uint64_t addr, | |
a67ba386 | 987 | struct lttng_kernel_event_notifier *event_notifier) |
2b16f0c9 FD |
988 | { |
989 | return -ENOSYS; | |
990 | } | |
991 | ||
992 | static inline | |
a67ba386 | 993 | void lttng_kprobes_unregister_event_notifier(struct lttng_kernel_event_notifier *event_notifier) |
2b16f0c9 FD |
994 | { |
995 | } | |
996 | ||
997 | static inline | |
a67ba386 | 998 | void lttng_kprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier *event_notifier) |
edeb3137 MD |
999 | { |
1000 | } | |
acd614cc | 1001 | #endif |
d6d808f3 | 1002 | |
e2d5dbc7 | 1003 | int lttng_event_add_callsite(struct lttng_kernel_event_common *event, |
606828e4 | 1004 | struct lttng_kernel_abi_event_callsite __user *callsite); |
9de67196 | 1005 | |
149b9a9d | 1006 | #ifdef CONFIG_UPROBES |
83b802dc | 1007 | int lttng_uprobes_register_event(const char *name, |
a67ba386 | 1008 | int fd, struct lttng_kernel_event_recorder *event); |
e2d5dbc7 | 1009 | int lttng_uprobes_event_add_callsite(struct lttng_kernel_event_common *event, |
606828e4 | 1010 | struct lttng_kernel_abi_event_callsite __user *callsite); |
a67ba386 MD |
1011 | void lttng_uprobes_unregister_event(struct lttng_kernel_event_recorder *event); |
1012 | void lttng_uprobes_destroy_event_private(struct lttng_kernel_event_recorder *event); | |
9de67196 | 1013 | int lttng_uprobes_register_event_notifier(const char *name, |
a67ba386 | 1014 | int fd, struct lttng_kernel_event_notifier *event_notifier); |
a67ba386 MD |
1015 | void lttng_uprobes_unregister_event_notifier(struct lttng_kernel_event_notifier *event_notifier); |
1016 | void lttng_uprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier *event_notifier); | |
149b9a9d YB |
1017 | #else |
1018 | static inline | |
83b802dc | 1019 | int lttng_uprobes_register_event(const char *name, |
a67ba386 | 1020 | int fd, struct lttng_kernel_event_recorder *event) |
3aed4dca FD |
1021 | { |
1022 | return -ENOSYS; | |
1023 | } | |
1024 | ||
1025 | static inline | |
e2d5dbc7 | 1026 | int lttng_uprobes_event_add_callsite(struct lttng_kernel_event_common *event, |
606828e4 | 1027 | struct lttng_kernel_abi_event_callsite __user *callsite) |
149b9a9d YB |
1028 | { |
1029 | return -ENOSYS; | |
1030 | } | |
1031 | ||
1032 | static inline | |
a67ba386 | 1033 | void lttng_uprobes_unregister_event(struct lttng_kernel_event_recorder *event) |
149b9a9d YB |
1034 | { |
1035 | } | |
1036 | ||
1037 | static inline | |
a67ba386 | 1038 | void lttng_uprobes_destroy_event_private(struct lttng_kernel_event_recorder *event) |
149b9a9d YB |
1039 | { |
1040 | } | |
9de67196 FD |
1041 | |
1042 | static inline | |
1043 | int lttng_uprobes_register_event_notifier(const char *name, | |
a67ba386 | 1044 | int fd, struct lttng_kernel_event_notifier *event_notifier) |
9de67196 FD |
1045 | { |
1046 | return -ENOSYS; | |
1047 | } | |
1048 | ||
9de67196 | 1049 | static inline |
a67ba386 | 1050 | void lttng_uprobes_unregister_event_notifier(struct lttng_kernel_event_notifier *event_notifier) |
9de67196 FD |
1051 | { |
1052 | } | |
1053 | ||
1054 | static inline | |
a67ba386 | 1055 | void lttng_uprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier *event_notifier) |
9de67196 FD |
1056 | { |
1057 | } | |
149b9a9d YB |
1058 | #endif |
1059 | ||
7371f44c MD |
1060 | #ifdef CONFIG_KRETPROBES |
1061 | int lttng_kretprobes_register(const char *name, | |
1062 | const char *symbol_name, | |
1063 | uint64_t offset, | |
1064 | uint64_t addr, | |
a67ba386 MD |
1065 | struct lttng_kernel_event_recorder *event_entry, |
1066 | struct lttng_kernel_event_recorder *event_exit); | |
1067 | void lttng_kretprobes_unregister(struct lttng_kernel_event_recorder *event); | |
1068 | void lttng_kretprobes_destroy_private(struct lttng_kernel_event_recorder *event); | |
e2d5dbc7 | 1069 | int lttng_kretprobes_event_enable_state(struct lttng_kernel_event_common *event, |
a0493bef | 1070 | int enable); |
7371f44c MD |
1071 | #else |
1072 | static inline | |
1073 | int lttng_kretprobes_register(const char *name, | |
1074 | const char *symbol_name, | |
1075 | uint64_t offset, | |
1076 | uint64_t addr, | |
a67ba386 MD |
1077 | struct lttng_kernel_event_recorder *event_entry, |
1078 | struct lttng_kernel_event_recorder *event_exit) | |
7371f44c MD |
1079 | { |
1080 | return -ENOSYS; | |
1081 | } | |
1082 | ||
1083 | static inline | |
a67ba386 | 1084 | void lttng_kretprobes_unregister(struct lttng_kernel_event_recorder *event) |
7371f44c MD |
1085 | { |
1086 | } | |
1087 | ||
1088 | static inline | |
a67ba386 | 1089 | void lttng_kretprobes_destroy_private(struct lttng_kernel_event_recorder *event) |
7371f44c MD |
1090 | { |
1091 | } | |
a0493bef MD |
1092 | |
1093 | static inline | |
e2d5dbc7 | 1094 | int lttng_kretprobes_event_enable_state(struct lttng_kernel_event_common *event, |
a0493bef MD |
1095 | int enable) |
1096 | { | |
1097 | return -ENOSYS; | |
1098 | } | |
7371f44c MD |
1099 | #endif |
1100 | ||
606828e4 | 1101 | int lttng_calibrate(struct lttng_kernel_abi_calibrate *calibrate); |
57105fc2 | 1102 | |
271b6681 | 1103 | extern const struct file_operations lttng_tracepoint_list_fops; |
2d2464bd | 1104 | extern const struct file_operations lttng_syscall_list_fops; |
271b6681 | 1105 | |
ef200626 | 1106 | #define TRACEPOINT_HAS_DATA_ARG |
ef200626 | 1107 | |
a90917c3 | 1108 | #endif /* _LTTNG_EVENTS_H */ |