Commit | Line | Data |
---|---|---|
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; | |
112 | const char *length_name; /* Length field name. */ | |
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; | |
127 | const char *tag_name; | |
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 | ||
249 | #define lttng_kernel_static_ctx_field(_event_field, _get_size, _get_size_arg, _record, _get_value, _destroy, _priv) \ | |
250 | __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_ctx_field, { \ | |
251 | .event_field = (_event_field), \ | |
252 | .get_size = (_get_size), \ | |
253 | .get_size_arg = (_get_size_arg), \ | |
254 | .record = (_record), \ | |
255 | .get_value = (_get_value), \ | |
256 | .destroy = (_destroy), \ | |
257 | .priv = (_priv), \ | |
258 | }) | |
259 | ||
260 | #define lttng_kernel_static_enum_entry_value(_string, _value) \ | |
261 | __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_enum_entry, { \ | |
262 | .start = { \ | |
263 | .signedness = lttng_is_signed_type(__typeof__(_value)), \ | |
264 | .value = lttng_is_signed_type(__typeof__(_value)) ? \ | |
265 | (long long) (_value) : (_value), \ | |
266 | }, \ | |
267 | .end = { \ | |
268 | .signedness = lttng_is_signed_type(__typeof__(_value)), \ | |
269 | .value = lttng_is_signed_type(__typeof__(_value)) ? \ | |
270 | (long long) (_value) : (_value), \ | |
271 | }, \ | |
272 | .string = (_string), \ | |
273 | }), | |
274 | ||
275 | #define lttng_kernel_static_enum_entry_range(_string, _range_start, _range_end) \ | |
276 | __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_enum_entry, { \ | |
277 | .start = { \ | |
278 | .signedness = lttng_is_signed_type(__typeof__(_range_start)), \ | |
279 | .value = lttng_is_signed_type(__typeof__(_range_start)) ? \ | |
280 | (long long) (_range_start) : (_range_start), \ | |
281 | }, \ | |
282 | .end = { \ | |
283 | .signedness = lttng_is_signed_type(__typeof__(_range_end)), \ | |
284 | .value = lttng_is_signed_type(__typeof__(_range_end)) ? \ | |
285 | (long long) (_range_end) : (_range_end), \ | |
286 | }, \ | |
287 | .string = (_string), \ | |
288 | }), | |
289 | ||
290 | #define lttng_kernel_static_enum_entry_auto(_string) \ | |
291 | __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_enum_entry, { \ | |
292 | .start = { \ | |
293 | .signedness = -1, \ | |
294 | .value = -1, \ | |
295 | }, \ | |
296 | .end = { \ | |
297 | .signedness = -1, \ | |
298 | .value = -1, \ | |
299 | }, \ | |
300 | .string = (_string), \ | |
301 | .options = { \ | |
302 | .is_auto = 1, \ | |
303 | } \ | |
304 | }), | |
305 | ||
07dfc1d0 MD |
306 | union lttng_ctx_value { |
307 | int64_t s64; | |
308 | const char *str; | |
309 | double d; | |
310 | }; | |
311 | ||
2001023e MD |
312 | /* |
313 | * We need to keep this perf counter field separately from struct | |
437d5aa5 | 314 | * lttng_kernel_ctx_field because cpu hotplug needs fixed-location addresses. |
2001023e MD |
315 | */ |
316 | struct lttng_perf_counter_field { | |
5f4c791e | 317 | #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) |
1e367326 MD |
318 | struct lttng_cpuhp_node cpuhp_prepare; |
319 | struct lttng_cpuhp_node cpuhp_online; | |
320 | #else | |
2001023e MD |
321 | struct notifier_block nb; |
322 | int hp_enable; | |
1e367326 | 323 | #endif |
2001023e MD |
324 | struct perf_event_attr *attr; |
325 | struct perf_event **e; /* per-cpu array */ | |
437d5aa5 MD |
326 | char *name; |
327 | struct lttng_kernel_event_field *event_field; | |
2001023e MD |
328 | }; |
329 | ||
79150a49 JD |
330 | struct lttng_probe_ctx { |
331 | struct lttng_event *event; | |
7fad9b39 | 332 | struct lttng_event_notifier *event_notifier; // Not sure if we will ever need it. |
79150a49 JD |
333 | uint8_t interruptible; |
334 | }; | |
335 | ||
437d5aa5 MD |
336 | struct lttng_kernel_ctx_field { |
337 | const struct lttng_kernel_event_field *event_field; | |
f1676205 | 338 | size_t (*get_size)(size_t offset); |
437d5aa5 | 339 | size_t (*get_size_arg)(size_t offset, struct lttng_kernel_ctx_field *field, |
1474c8e2 FG |
340 | struct lib_ring_buffer_ctx *ctx, |
341 | struct lttng_channel *chan); | |
437d5aa5 | 342 | void (*record)(struct lttng_kernel_ctx_field *field, |
f1676205 | 343 | struct lib_ring_buffer_ctx *ctx, |
a90917c3 | 344 | struct lttng_channel *chan); |
437d5aa5 | 345 | void (*get_value)(struct lttng_kernel_ctx_field *field, |
79150a49 | 346 | struct lttng_probe_ctx *lttng_probe_ctx, |
07dfc1d0 | 347 | union lttng_ctx_value *value); |
437d5aa5 | 348 | void (*destroy)(struct lttng_kernel_ctx_field *field); |
3c1a57e8 | 349 | void *priv; |
ba1f5986 MD |
350 | }; |
351 | ||
437d5aa5 MD |
352 | struct lttng_kernel_ctx { |
353 | struct lttng_kernel_ctx_field *fields; | |
0d1a681e | 354 | unsigned int nr_fields; |
ba1f5986 | 355 | unsigned int allocated_fields; |
a9dd15da | 356 | size_t largest_align; /* in bytes */ |
0d1a681e MD |
357 | }; |
358 | ||
437d5aa5 MD |
359 | struct lttng_kernel_event_desc { |
360 | const char *event_name; /* lttng-modules name */ | |
361 | const char *event_kname; /* Linux kernel name (tracepoints) */ | |
362 | const struct lttng_kernel_probe_desc *probe_desc; | |
363 | void (*probe_callback)(void); | |
364 | const struct lttng_kernel_event_field **fields; /* event payload */ | |
c0edae1d | 365 | unsigned int nr_fields; |
dc7f600a | 366 | struct module *owner; |
7fad9b39 | 367 | void *event_notifier_callback; |
c0edae1d MD |
368 | }; |
369 | ||
437d5aa5 MD |
370 | struct lttng_kernel_probe_desc { |
371 | const char *provider_name; | |
372 | const struct lttng_kernel_event_desc **event_desc; | |
85a9ca7f MD |
373 | unsigned int nr_events; |
374 | struct list_head head; /* chain registered probes */ | |
3c997079 MD |
375 | struct list_head lazy_init_head; |
376 | int lazy; /* lazy registration */ | |
85a9ca7f MD |
377 | }; |
378 | ||
7371f44c MD |
379 | struct lttng_krp; /* Kretprobe handling */ |
380 | ||
89ec2b91 FD |
381 | enum lttng_bytecode_node_type { |
382 | LTTNG_BYTECODE_NODE_TYPE_FILTER, | |
99d223ad | 383 | LTTNG_BYTECODE_NODE_TYPE_CAPTURE, |
89ec2b91 FD |
384 | }; |
385 | ||
386 | struct lttng_bytecode_node { | |
387 | enum lttng_bytecode_node_type type; | |
07dfc1d0 MD |
388 | struct list_head node; |
389 | struct lttng_enabler *enabler; | |
89ec2b91 FD |
390 | struct { |
391 | uint32_t len; | |
392 | uint32_t reloc_offset; | |
393 | uint64_t seqnum; | |
394 | char data[]; | |
395 | } bc; | |
07dfc1d0 MD |
396 | }; |
397 | ||
398 | /* | |
80c2a69a | 399 | * Bytecode interpreter return value masks. |
07dfc1d0 | 400 | */ |
80c2a69a FD |
401 | enum lttng_bytecode_interpreter_ret { |
402 | LTTNG_INTERPRETER_DISCARD = 0, | |
403 | LTTNG_INTERPRETER_RECORD_FLAG = (1ULL << 0), | |
07dfc1d0 MD |
404 | /* Other bits are kept for future use. */ |
405 | }; | |
406 | ||
99d223ad FD |
407 | struct lttng_interpreter_output; |
408 | ||
07dfc1d0 MD |
409 | struct lttng_bytecode_runtime { |
410 | /* Associated bytecode */ | |
89ec2b91 | 411 | struct lttng_bytecode_node *bc; |
3d650c7b FD |
412 | union { |
413 | uint64_t (*filter)(void *filter_data, | |
414 | struct lttng_probe_ctx *lttng_probe_ctx, | |
415 | const char *filter_stack_data); | |
99d223ad FD |
416 | uint64_t (*capture)(void *filter_data, |
417 | struct lttng_probe_ctx *lttng_probe_ctx, | |
418 | const char *capture_stack_data, | |
419 | struct lttng_interpreter_output *output); | |
3d650c7b | 420 | } interpreter_funcs; |
07dfc1d0 MD |
421 | int link_failed; |
422 | struct list_head node; /* list of bytecode runtime in event */ | |
437d5aa5 | 423 | struct lttng_kernel_ctx *ctx; |
07dfc1d0 MD |
424 | }; |
425 | ||
3c997079 MD |
426 | /* |
427 | * Objects in a linked-list of enablers, owned by an event. | |
428 | */ | |
429 | struct lttng_enabler_ref { | |
430 | struct list_head node; /* enabler ref list */ | |
431 | struct lttng_enabler *ref; /* backward ref */ | |
432 | }; | |
433 | ||
3aed4dca | 434 | struct lttng_uprobe_handler { |
83b802dc FD |
435 | union { |
436 | struct lttng_event *event; | |
9de67196 | 437 | struct lttng_event_notifier *event_notifier; |
83b802dc | 438 | } u; |
3aed4dca FD |
439 | loff_t offset; |
440 | struct uprobe_consumer up_consumer; | |
441 | struct list_head node; | |
442 | }; | |
443 | ||
8bf17deb FD |
444 | struct lttng_kprobe { |
445 | struct kprobe kp; | |
446 | char *symbol_name; | |
447 | }; | |
448 | ||
83b802dc FD |
449 | struct lttng_uprobe { |
450 | struct inode *inode; | |
451 | struct list_head head; | |
452 | }; | |
453 | ||
badfe9f5 MD |
454 | enum lttng_syscall_entryexit { |
455 | LTTNG_SYSCALL_ENTRY, | |
456 | LTTNG_SYSCALL_EXIT, | |
457 | }; | |
458 | ||
459 | enum lttng_syscall_abi { | |
460 | LTTNG_SYSCALL_ABI_NATIVE, | |
461 | LTTNG_SYSCALL_ABI_COMPAT, | |
462 | }; | |
463 | ||
85a9ca7f | 464 | /* |
a90917c3 | 465 | * lttng_event structure is referred to by the tracing fast path. It must be |
85a9ca7f MD |
466 | * kept small. |
467 | */ | |
a90917c3 | 468 | struct lttng_event { |
85a9ca7f | 469 | unsigned int id; |
a90917c3 | 470 | struct lttng_channel *chan; |
e64957da | 471 | int enabled; |
437d5aa5 | 472 | const struct lttng_kernel_event_desc *desc; |
85a9ca7f | 473 | void *filter; |
437d5aa5 | 474 | struct lttng_kernel_ctx *ctx; |
606828e4 | 475 | enum lttng_kernel_abi_instrumentation instrumentation; |
d6d808f3 | 476 | union { |
8bf17deb | 477 | struct lttng_kprobe kprobe; |
7371f44c MD |
478 | struct { |
479 | struct lttng_krp *lttng_krp; | |
480 | char *symbol_name; | |
481 | } kretprobe; | |
83b802dc | 482 | struct lttng_uprobe uprobe; |
badfe9f5 | 483 | struct { |
badfe9f5 MD |
484 | enum lttng_syscall_entryexit entryexit; |
485 | enum lttng_syscall_abi abi; | |
3b82c4e1 | 486 | struct hlist_node node; /* chain registered syscall event */ |
badfe9f5 | 487 | } syscall; |
d6d808f3 | 488 | } u; |
3c997079 | 489 | struct list_head list; /* Event list in session */ |
9cccf98a | 490 | unsigned int metadata_dumped:1; |
3c997079 MD |
491 | |
492 | /* Backward references: list of lttng_enabler_ref (ref to enablers) */ | |
493 | struct list_head enablers_ref_head; | |
494 | struct hlist_node hlist; /* session ht of events */ | |
495 | int registered; /* has reg'd tracepoint probe */ | |
07dfc1d0 | 496 | /* list of struct lttng_bytecode_runtime, sorted by seqnum */ |
183e8b3a | 497 | struct list_head filter_bytecode_runtime_head; |
07dfc1d0 | 498 | int has_enablers_without_bytecode; |
3c997079 MD |
499 | }; |
500 | ||
c3eddb2e MD |
501 | struct lttng_kernel_notifier_ctx { |
502 | int eval_capture; | |
503 | }; | |
504 | ||
dffef45d FD |
505 | // FIXME: Really similar to lttng_event above. Could those be merged ? |
506 | struct lttng_event_notifier { | |
dffef45d | 507 | uint64_t user_token; |
99f52fcc | 508 | uint64_t error_counter_index; |
dffef45d FD |
509 | int enabled; |
510 | int registered; /* has reg'd tracepoint probe */ | |
437d5aa5 | 511 | const struct lttng_kernel_event_desc *desc; |
dffef45d FD |
512 | void *filter; |
513 | struct list_head list; /* event_notifier list in event_notifier group */ | |
514 | ||
606828e4 | 515 | enum lttng_kernel_abi_instrumentation instrumentation; |
dffef45d | 516 | union { |
2b16f0c9 | 517 | struct lttng_kprobe kprobe; |
9de67196 | 518 | struct lttng_uprobe uprobe; |
8a8ac9a8 FD |
519 | struct { |
520 | enum lttng_syscall_entryexit entryexit; | |
521 | enum lttng_syscall_abi abi; | |
522 | struct hlist_node node; /* chain registered syscall event_notifier */ | |
523 | unsigned int syscall_id; | |
524 | } syscall; | |
525 | ||
dffef45d FD |
526 | } u; |
527 | ||
528 | /* Backward references: list of lttng_enabler_ref (ref to enablers) */ | |
529 | struct list_head enablers_ref_head; | |
530 | struct hlist_node hlist; /* session ht of event_notifiers */ | |
531 | /* list of struct lttng_bytecode_runtime, sorted by seqnum */ | |
183e8b3a | 532 | struct list_head filter_bytecode_runtime_head; |
99d223ad FD |
533 | size_t num_captures; |
534 | struct list_head capture_bytecode_runtime_head; | |
dffef45d | 535 | int has_enablers_without_bytecode; |
c3eddb2e | 536 | int eval_capture; /* Should evaluate capture */ |
dffef45d | 537 | |
99d223ad FD |
538 | void (*send_notification)(struct lttng_event_notifier *event_notifier, |
539 | struct lttng_probe_ctx *lttng_probe_ctx, | |
c3eddb2e MD |
540 | const char *interpreter_stack_data, |
541 | struct lttng_kernel_notifier_ctx *notif_ctx); | |
dffef45d FD |
542 | struct lttng_event_notifier_group *group; /* Weak ref */ |
543 | }; | |
544 | ||
3b861b22 FD |
545 | enum lttng_enabler_format_type { |
546 | LTTNG_ENABLER_FORMAT_STAR_GLOB, | |
547 | LTTNG_ENABLER_FORMAT_NAME, | |
3c997079 MD |
548 | }; |
549 | ||
550 | /* | |
551 | * Enabler field, within whatever object is enabling an event. Target of | |
552 | * backward reference. | |
553 | */ | |
554 | struct lttng_enabler { | |
3b861b22 | 555 | enum lttng_enabler_format_type format_type; |
3c997079 | 556 | |
608ab495 | 557 | /* head list of struct lttng_bytecode_node */ |
07dfc1d0 | 558 | struct list_head filter_bytecode_head; |
3c997079 | 559 | |
606828e4 | 560 | struct lttng_kernel_abi_event event_param; |
b2bc0bc8 | 561 | unsigned int enabled:1; |
dffef45d FD |
562 | |
563 | uint64_t user_token; /* User-provided token. */ | |
b2bc0bc8 FD |
564 | }; |
565 | ||
566 | struct lttng_event_enabler { | |
567 | struct lttng_enabler base; | |
568 | struct list_head node; /* per-session list of enablers */ | |
3c997079 | 569 | struct lttng_channel *chan; |
2954b37c FD |
570 | /* |
571 | * Unused, but kept around to make it explicit that the tracer can do | |
572 | * it. | |
573 | */ | |
437d5aa5 | 574 | struct lttng_kernel_ctx *ctx; |
85a9ca7f MD |
575 | }; |
576 | ||
dffef45d FD |
577 | struct lttng_event_notifier_enabler { |
578 | struct lttng_enabler base; | |
99f52fcc | 579 | uint64_t error_counter_index; |
dffef45d FD |
580 | struct list_head node; /* List of event_notifier enablers */ |
581 | struct lttng_event_notifier_group *group; | |
99d223ad FD |
582 | |
583 | /* head list of struct lttng_bytecode_node */ | |
584 | struct list_head capture_bytecode_head; | |
585 | uint64_t num_captures; | |
dffef45d FD |
586 | }; |
587 | ||
99d223ad | 588 | |
b2bc0bc8 FD |
589 | static inline |
590 | struct lttng_enabler *lttng_event_enabler_as_enabler( | |
591 | struct lttng_event_enabler *event_enabler) | |
592 | { | |
593 | return &event_enabler->base; | |
594 | } | |
595 | ||
dffef45d FD |
596 | static inline |
597 | struct lttng_enabler *lttng_event_notifier_enabler_as_enabler( | |
598 | struct lttng_event_notifier_enabler *event_notifier_enabler) | |
599 | { | |
600 | return &event_notifier_enabler->base; | |
601 | } | |
b2bc0bc8 | 602 | |
a90917c3 | 603 | struct lttng_channel_ops { |
85a9ca7f | 604 | struct channel *(*channel_create)(const char *name, |
5cf4b87c | 605 | void *priv, |
85a9ca7f MD |
606 | void *buf_addr, |
607 | size_t subbuf_size, size_t num_subbuf, | |
608 | unsigned int switch_timer_interval, | |
609 | unsigned int read_timer_interval); | |
610 | void (*channel_destroy)(struct channel *chan); | |
611 | struct lib_ring_buffer *(*buffer_read_open)(struct channel *chan); | |
f71ecafa | 612 | int (*buffer_has_read_closed_stream)(struct channel *chan); |
85a9ca7f | 613 | void (*buffer_read_close)(struct lib_ring_buffer *buf); |
4e1f08f4 | 614 | int (*event_reserve)(struct lib_ring_buffer_ctx *ctx, |
64c796d8 | 615 | uint32_t event_id); |
85a9ca7f MD |
616 | void (*event_commit)(struct lib_ring_buffer_ctx *ctx); |
617 | void (*event_write)(struct lib_ring_buffer_ctx *ctx, const void *src, | |
618 | size_t len); | |
4ea00e4f JD |
619 | void (*event_write_from_user)(struct lib_ring_buffer_ctx *ctx, |
620 | const void *src, size_t len); | |
58aa5d24 MD |
621 | void (*event_memset)(struct lib_ring_buffer_ctx *ctx, |
622 | int c, size_t len); | |
16f78f3a MD |
623 | void (*event_strcpy)(struct lib_ring_buffer_ctx *ctx, const char *src, |
624 | size_t len); | |
625 | void (*event_strcpy_from_user)(struct lib_ring_buffer_ctx *ctx, | |
626 | const char __user *src, size_t len); | |
1ec3f75a MD |
627 | /* |
628 | * packet_avail_size returns the available size in the current | |
629 | * packet. Note that the size returned is only a hint, since it | |
630 | * may change due to concurrent writes. | |
631 | */ | |
632 | size_t (*packet_avail_size)(struct channel *chan); | |
71c1d843 | 633 | wait_queue_head_t *(*get_writer_buf_wait_queue)(struct channel *chan, int cpu); |
24cedcfe MD |
634 | wait_queue_head_t *(*get_hp_wait_queue)(struct channel *chan); |
635 | int (*is_finalized)(struct channel *chan); | |
254ec7bc | 636 | int (*is_disabled)(struct channel *chan); |
3b731ab1 JD |
637 | int (*timestamp_begin) (const struct lib_ring_buffer_config *config, |
638 | struct lib_ring_buffer *bufb, | |
639 | uint64_t *timestamp_begin); | |
640 | int (*timestamp_end) (const struct lib_ring_buffer_config *config, | |
641 | struct lib_ring_buffer *bufb, | |
642 | uint64_t *timestamp_end); | |
643 | int (*events_discarded) (const struct lib_ring_buffer_config *config, | |
644 | struct lib_ring_buffer *bufb, | |
645 | uint64_t *events_discarded); | |
646 | int (*content_size) (const struct lib_ring_buffer_config *config, | |
647 | struct lib_ring_buffer *bufb, | |
648 | uint64_t *content_size); | |
649 | int (*packet_size) (const struct lib_ring_buffer_config *config, | |
650 | struct lib_ring_buffer *bufb, | |
651 | uint64_t *packet_size); | |
652 | int (*stream_id) (const struct lib_ring_buffer_config *config, | |
653 | struct lib_ring_buffer *bufb, | |
654 | uint64_t *stream_id); | |
2348ca17 JD |
655 | int (*current_timestamp) (const struct lib_ring_buffer_config *config, |
656 | struct lib_ring_buffer *bufb, | |
657 | uint64_t *ts); | |
5b3cf4f9 JD |
658 | int (*sequence_number) (const struct lib_ring_buffer_config *config, |
659 | struct lib_ring_buffer *bufb, | |
660 | uint64_t *seq); | |
5594698f JD |
661 | int (*instance_id) (const struct lib_ring_buffer_config *config, |
662 | struct lib_ring_buffer *bufb, | |
663 | uint64_t *id); | |
85a9ca7f MD |
664 | }; |
665 | ||
a101fa10 MD |
666 | struct lttng_counter_ops { |
667 | struct lib_counter *(*counter_create)(size_t nr_dimensions, | |
668 | const size_t *max_nr_elem, /* for each dimension */ | |
669 | int64_t global_sum_step); | |
670 | void (*counter_destroy)(struct lib_counter *counter); | |
671 | int (*counter_add)(struct lib_counter *counter, const size_t *dimension_indexes, | |
672 | int64_t v); | |
673 | /* | |
674 | * counter_read reads a specific cpu's counter if @cpu >= 0, or | |
675 | * the global aggregation counter if @cpu == -1. | |
676 | */ | |
677 | int (*counter_read)(struct lib_counter *counter, const size_t *dimension_indexes, int cpu, | |
678 | int64_t *value, bool *overflow, bool *underflow); | |
679 | /* | |
680 | * counter_aggregate returns the total sum of all per-cpu counters and | |
681 | * the global aggregation counter. | |
682 | */ | |
683 | int (*counter_aggregate)(struct lib_counter *counter, const size_t *dimension_indexes, | |
684 | int64_t *value, bool *overflow, bool *underflow); | |
685 | int (*counter_clear)(struct lib_counter *counter, const size_t *dimension_indexes); | |
686 | }; | |
687 | ||
a90917c3 | 688 | struct lttng_transport { |
a33c9927 MD |
689 | char *name; |
690 | struct module *owner; | |
691 | struct list_head node; | |
a90917c3 | 692 | struct lttng_channel_ops ops; |
a33c9927 MD |
693 | }; |
694 | ||
a101fa10 MD |
695 | struct lttng_counter_transport { |
696 | char *name; | |
697 | struct module *owner; | |
698 | struct list_head node; | |
699 | struct lttng_counter_ops ops; | |
700 | }; | |
701 | ||
80f87dd2 MD |
702 | struct lttng_syscall_filter; |
703 | ||
3c997079 MD |
704 | #define LTTNG_EVENT_HT_BITS 12 |
705 | #define LTTNG_EVENT_HT_SIZE (1U << LTTNG_EVENT_HT_BITS) | |
706 | ||
707 | struct lttng_event_ht { | |
708 | struct hlist_head table[LTTNG_EVENT_HT_SIZE]; | |
709 | }; | |
710 | ||
dffef45d FD |
711 | #define LTTNG_EVENT_NOTIFIER_HT_BITS 12 |
712 | #define LTTNG_EVENT_NOTIFIER_HT_SIZE (1U << LTTNG_EVENT_NOTIFIER_HT_BITS) | |
713 | ||
714 | struct lttng_event_notifier_ht { | |
715 | struct hlist_head table[LTTNG_EVENT_NOTIFIER_HT_SIZE]; | |
716 | }; | |
717 | ||
a90917c3 | 718 | struct lttng_channel { |
c099397a | 719 | unsigned int id; |
85a9ca7f | 720 | struct channel *chan; /* Channel buffers */ |
e64957da | 721 | int enabled; |
437d5aa5 | 722 | struct lttng_kernel_ctx *ctx; |
85a9ca7f | 723 | /* Event ID management */ |
a90917c3 | 724 | struct lttng_session *session; |
85a9ca7f MD |
725 | struct file *file; /* File associated to channel */ |
726 | unsigned int free_event_id; /* Next event ID to allocate */ | |
727 | struct list_head list; /* Channel list */ | |
a90917c3 MD |
728 | struct lttng_channel_ops *ops; |
729 | struct lttng_transport *transport; | |
3b82c4e1 MD |
730 | struct hlist_head *sc_table; /* for syscall tracing */ |
731 | struct hlist_head *compat_sc_table; | |
732 | struct hlist_head *sc_exit_table; /* for syscall exit tracing */ | |
733 | struct hlist_head *compat_sc_exit_table; | |
734 | struct hlist_head sc_unknown; /* for unknown syscalls */ | |
735 | struct hlist_head sc_compat_unknown; | |
736 | struct hlist_head sc_exit_unknown; | |
737 | struct hlist_head compat_sc_exit_unknown; | |
80f87dd2 | 738 | struct lttng_syscall_filter *sc_filter; |
9115fbdc | 739 | int header_type; /* 0: unset, 1: compact, 2: large */ |
d83004aa | 740 | enum channel_type channel_type; |
3b82c4e1 MD |
741 | int syscall_all_entry; |
742 | int syscall_all_exit; | |
80f87dd2 MD |
743 | unsigned int metadata_dumped:1, |
744 | sys_enter_registered:1, | |
745 | sys_exit_registered:1, | |
3c997079 | 746 | tstate:1; /* Transient enable state */ |
85a9ca7f MD |
747 | }; |
748 | ||
d83004aa JD |
749 | struct lttng_metadata_stream { |
750 | void *priv; /* Ring buffer private data */ | |
751 | struct lttng_metadata_cache *metadata_cache; | |
f613e3e6 MD |
752 | unsigned int metadata_in; /* Bytes read from the cache */ |
753 | unsigned int metadata_out; /* Bytes consumed from stream */ | |
d83004aa JD |
754 | int finalized; /* Has channel been finalized */ |
755 | wait_queue_head_t read_wait; /* Reader buffer-level wait queue */ | |
756 | struct list_head list; /* Stream list */ | |
b3b8072b | 757 | struct lttng_transport *transport; |
9616f0bf | 758 | uint64_t version; /* Current version of the metadata cache */ |
8b97fd42 | 759 | bool coherent; /* Stream in a coherent state */ |
d83004aa JD |
760 | }; |
761 | ||
114667d5 MD |
762 | #define LTTNG_DYNAMIC_LEN_STACK_SIZE 128 |
763 | ||
764 | struct lttng_dynamic_len_stack { | |
765 | size_t stack[LTTNG_DYNAMIC_LEN_STACK_SIZE]; | |
766 | size_t offset; | |
767 | }; | |
768 | ||
769 | DECLARE_PER_CPU(struct lttng_dynamic_len_stack, lttng_dynamic_len_stack); | |
e0130fab MD |
770 | |
771 | /* | |
d1f652f8 | 772 | * struct lttng_id_tracker declared in header due to deferencing of *v |
e0130fab MD |
773 | * in RCU_INITIALIZER(v). |
774 | */ | |
d1f652f8 MD |
775 | #define LTTNG_ID_HASH_BITS 6 |
776 | #define LTTNG_ID_TABLE_SIZE (1 << LTTNG_ID_HASH_BITS) | |
e0130fab | 777 | |
d1f652f8 MD |
778 | enum tracker_type { |
779 | TRACKER_PID, | |
780 | TRACKER_VPID, | |
781 | TRACKER_UID, | |
782 | TRACKER_VUID, | |
783 | TRACKER_GID, | |
784 | TRACKER_VGID, | |
785 | ||
786 | TRACKER_UNKNOWN, | |
787 | }; | |
788 | ||
789 | struct lttng_id_tracker_rcu { | |
790 | struct hlist_head id_hash[LTTNG_ID_TABLE_SIZE]; | |
791 | }; | |
792 | ||
793 | struct lttng_id_tracker { | |
794 | struct lttng_session *session; | |
795 | enum tracker_type tracker_type; | |
796 | struct lttng_id_tracker_rcu *p; /* RCU dereferenced. */ | |
e0130fab MD |
797 | }; |
798 | ||
d1f652f8 | 799 | struct lttng_id_hash_node { |
7e6f9ef6 | 800 | struct hlist_node hlist; |
d1f652f8 | 801 | int id; |
7e6f9ef6 MD |
802 | }; |
803 | ||
a90917c3 | 804 | struct lttng_session { |
85a9ca7f | 805 | int active; /* Is trace session active ? */ |
8070f5c0 | 806 | int been_active; /* Has trace session been active ? */ |
85a9ca7f MD |
807 | struct file *file; /* File associated to session */ |
808 | struct list_head chan; /* Channel list head */ | |
809 | struct list_head events; /* Event list head */ | |
810 | struct list_head list; /* Session list */ | |
c099397a | 811 | unsigned int free_chan_id; /* Next chan ID to allocate */ |
d793d5e1 | 812 | uuid_le uuid; /* Trace session unique ID */ |
d83004aa | 813 | struct lttng_metadata_cache *metadata_cache; |
d1f652f8 MD |
814 | struct lttng_id_tracker pid_tracker; |
815 | struct lttng_id_tracker vpid_tracker; | |
816 | struct lttng_id_tracker uid_tracker; | |
817 | struct lttng_id_tracker vuid_tracker; | |
818 | struct lttng_id_tracker gid_tracker; | |
819 | struct lttng_id_tracker vgid_tracker; | |
3c997079 MD |
820 | unsigned int metadata_dumped:1, |
821 | tstate:1; /* Transient enable state */ | |
b2bc0bc8 | 822 | /* List of event enablers */ |
3c997079 MD |
823 | struct list_head enablers_head; |
824 | /* Hash table of events */ | |
825 | struct lttng_event_ht events_ht; | |
606828e4 MD |
826 | char name[LTTNG_KERNEL_ABI_SESSION_NAME_LEN]; |
827 | char creation_time[LTTNG_KERNEL_ABI_SESSION_CREATION_TIME_ISO8601_LEN]; | |
85a9ca7f MD |
828 | }; |
829 | ||
99f52fcc FD |
830 | struct lttng_counter { |
831 | struct file *file; /* File associated to counter. */ | |
832 | struct file *owner; | |
833 | struct lttng_counter_transport *transport; | |
834 | struct lib_counter *counter; | |
835 | struct lttng_counter_ops *ops; | |
836 | }; | |
837 | ||
750b05f2 FD |
838 | struct lttng_event_notifier_group { |
839 | struct file *file; /* File associated to event notifier group */ | |
21f58fb7 | 840 | struct file *notif_file; /* File used to expose notifications to userspace. */ |
750b05f2 | 841 | struct list_head node; /* event notifier group list */ |
dffef45d FD |
842 | struct list_head enablers_head; /* List of enablers */ |
843 | struct list_head event_notifiers_head; /* List of event notifier */ | |
844 | struct lttng_event_notifier_ht event_notifiers_ht; /* Hash table of event notifiers */ | |
750b05f2 FD |
845 | struct lttng_channel_ops *ops; |
846 | struct lttng_transport *transport; | |
847 | struct channel *chan; /* Ring buffer channel for event notifier group. */ | |
848 | struct lib_ring_buffer *buf; /* Ring buffer for event notifier group. */ | |
21f58fb7 FD |
849 | wait_queue_head_t read_wait; |
850 | struct irq_work wakeup_pending; /* Pending wakeup irq work. */ | |
8a8ac9a8 FD |
851 | struct lttng_event_notifier *sc_unknown; /* for unknown syscalls */ |
852 | struct lttng_event_notifier *sc_compat_unknown; | |
853 | ||
854 | struct lttng_syscall_filter *sc_filter; | |
855 | ||
856 | struct hlist_head *event_notifier_syscall_dispatch; | |
857 | struct hlist_head *event_notifier_compat_syscall_dispatch; | |
858 | struct hlist_head *event_notifier_exit_syscall_dispatch; | |
859 | struct hlist_head *event_notifier_exit_compat_syscall_dispatch; | |
860 | ||
861 | struct hlist_head event_notifier_unknown_syscall_dispatch; | |
862 | struct hlist_head event_notifier_compat_unknown_syscall_dispatch; | |
863 | struct hlist_head event_notifier_exit_unknown_syscall_dispatch; | |
864 | struct hlist_head event_notifier_exit_compat_unknown_syscall_dispatch; | |
865 | ||
866 | int syscall_all_entry; | |
867 | int syscall_all_exit; | |
868 | ||
869 | unsigned int sys_enter_registered:1, sys_exit_registered:1; | |
870 | ||
871 | struct lttng_counter *error_counter; | |
872 | size_t error_counter_len; | |
750b05f2 FD |
873 | }; |
874 | ||
d83004aa JD |
875 | struct lttng_metadata_cache { |
876 | char *data; /* Metadata cache */ | |
877 | unsigned int cache_alloc; /* Metadata allocated size (bytes) */ | |
878 | unsigned int metadata_written; /* Number of bytes written in metadata cache */ | |
3e75e2a7 | 879 | atomic_t producing; /* Metadata being produced (incomplete) */ |
d83004aa JD |
880 | struct kref refcount; /* Metadata cache usage */ |
881 | struct list_head metadata_stream; /* Metadata stream list */ | |
a36580d5 | 882 | uuid_le uuid; /* Trace session unique ID (copy) */ |
9616f0bf JD |
883 | struct mutex lock; /* Produce/consume lock */ |
884 | uint64_t version; /* Current version of the metadata */ | |
d83004aa JD |
885 | }; |
886 | ||
3c997079 MD |
887 | void lttng_lock_sessions(void); |
888 | void lttng_unlock_sessions(void); | |
889 | ||
890 | struct list_head *lttng_get_probe_list_head(void); | |
891 | ||
b2bc0bc8 FD |
892 | struct lttng_event_enabler *lttng_event_enabler_create( |
893 | enum lttng_enabler_format_type format_type, | |
606828e4 | 894 | struct lttng_kernel_abi_event *event_param, |
3c997079 MD |
895 | struct lttng_channel *chan); |
896 | ||
b2bc0bc8 FD |
897 | int lttng_event_enabler_enable(struct lttng_event_enabler *event_enabler); |
898 | int lttng_event_enabler_disable(struct lttng_event_enabler *event_enabler); | |
dffef45d FD |
899 | struct lttng_event_notifier_enabler *lttng_event_notifier_enabler_create( |
900 | struct lttng_event_notifier_group *event_notifier_group, | |
901 | enum lttng_enabler_format_type format_type, | |
606828e4 | 902 | struct lttng_kernel_abi_event_notifier *event_notifier_param); |
dffef45d FD |
903 | |
904 | int lttng_event_notifier_enabler_enable( | |
905 | struct lttng_event_notifier_enabler *event_notifier_enabler); | |
906 | int lttng_event_notifier_enabler_disable( | |
907 | struct lttng_event_notifier_enabler *event_notifier_enabler); | |
3c997079 | 908 | int lttng_fix_pending_events(void); |
b01155ba | 909 | int lttng_fix_pending_event_notifiers(void); |
3c997079 | 910 | int lttng_session_active(void); |
b01155ba | 911 | bool lttng_event_notifier_active(void); |
3c997079 | 912 | |
a90917c3 MD |
913 | struct lttng_session *lttng_session_create(void); |
914 | int lttng_session_enable(struct lttng_session *session); | |
915 | int lttng_session_disable(struct lttng_session *session); | |
916 | void lttng_session_destroy(struct lttng_session *session); | |
9616f0bf | 917 | int lttng_session_metadata_regenerate(struct lttng_session *session); |
601252cf | 918 | int lttng_session_statedump(struct lttng_session *session); |
d83004aa | 919 | void metadata_cache_destroy(struct kref *kref); |
4e3c1b9b | 920 | |
99f52fcc FD |
921 | struct lttng_counter *lttng_kernel_counter_create( |
922 | const char *counter_transport_name, size_t number_dimensions, | |
923 | const size_t *dimensions_sizes); | |
924 | int lttng_kernel_counter_read(struct lttng_counter *counter, | |
925 | const size_t *dimension_indexes, int32_t cpu, | |
926 | int64_t *val, bool *overflow, bool *underflow); | |
927 | int lttng_kernel_counter_aggregate(struct lttng_counter *counter, | |
928 | const size_t *dimension_indexes, int64_t *val, | |
929 | bool *overflow, bool *underflow); | |
930 | int lttng_kernel_counter_clear(struct lttng_counter *counter, | |
931 | const size_t *dimension_indexes); | |
932 | ||
933 | ||
750b05f2 | 934 | struct lttng_event_notifier_group *lttng_event_notifier_group_create(void); |
99f52fcc FD |
935 | int lttng_event_notifier_group_create_error_counter( |
936 | struct file *event_notifier_group_file, | |
606828e4 | 937 | const struct lttng_kernel_abi_counter_conf *error_counter_conf); |
750b05f2 FD |
938 | void lttng_event_notifier_group_destroy( |
939 | struct lttng_event_notifier_group *event_notifier_group); | |
940 | ||
a90917c3 | 941 | struct lttng_channel *lttng_channel_create(struct lttng_session *session, |
5dbbdb43 MD |
942 | const char *transport_name, |
943 | void *buf_addr, | |
944 | size_t subbuf_size, size_t num_subbuf, | |
945 | unsigned int switch_timer_interval, | |
d83004aa JD |
946 | unsigned int read_timer_interval, |
947 | enum channel_type channel_type); | |
a90917c3 | 948 | struct lttng_channel *lttng_global_channel_create(struct lttng_session *session, |
4e3c1b9b MD |
949 | int overwrite, void *buf_addr, |
950 | size_t subbuf_size, size_t num_subbuf, | |
951 | unsigned int switch_timer_interval, | |
952 | unsigned int read_timer_interval); | |
4e3c1b9b | 953 | |
d83004aa | 954 | void lttng_metadata_channel_destroy(struct lttng_channel *chan); |
a90917c3 | 955 | struct lttng_event *lttng_event_create(struct lttng_channel *chan, |
606828e4 | 956 | struct lttng_kernel_abi_event *event_param, |
3c997079 | 957 | void *filter, |
437d5aa5 | 958 | const struct lttng_kernel_event_desc *event_desc, |
606828e4 | 959 | enum lttng_kernel_abi_instrumentation itype); |
33a39a3c | 960 | struct lttng_event *_lttng_event_create(struct lttng_channel *chan, |
606828e4 | 961 | struct lttng_kernel_abi_event *event_param, |
33a39a3c | 962 | void *filter, |
437d5aa5 | 963 | const struct lttng_kernel_event_desc *event_desc, |
606828e4 | 964 | enum lttng_kernel_abi_instrumentation itype); |
6dccd6c1 | 965 | struct lttng_event *lttng_event_compat_old_create(struct lttng_channel *chan, |
606828e4 | 966 | struct lttng_kernel_abi_old_event *old_event_param, |
6dccd6c1 | 967 | void *filter, |
437d5aa5 | 968 | const struct lttng_kernel_event_desc *internal_desc); |
c0e31d2e | 969 | |
dffef45d | 970 | struct lttng_event_notifier *lttng_event_notifier_create( |
437d5aa5 | 971 | const struct lttng_kernel_event_desc *event_notifier_desc, |
dffef45d | 972 | uint64_t id, |
99f52fcc | 973 | uint64_t error_counter_idx, |
dffef45d | 974 | struct lttng_event_notifier_group *event_notifier_group, |
606828e4 | 975 | struct lttng_kernel_abi_event_notifier *event_notifier_param, |
dffef45d | 976 | void *filter, |
606828e4 | 977 | enum lttng_kernel_abi_instrumentation itype); |
dffef45d | 978 | struct lttng_event_notifier *_lttng_event_notifier_create( |
437d5aa5 | 979 | const struct lttng_kernel_event_desc *event_notifier_desc, |
dffef45d | 980 | uint64_t id, |
99f52fcc | 981 | uint64_t error_counter_idx, |
dffef45d | 982 | struct lttng_event_notifier_group *event_notifier_group, |
606828e4 | 983 | struct lttng_kernel_abi_event_notifier *event_notifier_param, |
dffef45d | 984 | void *filter, |
606828e4 | 985 | enum lttng_kernel_abi_instrumentation itype); |
dffef45d | 986 | |
a90917c3 MD |
987 | int lttng_channel_enable(struct lttng_channel *channel); |
988 | int lttng_channel_disable(struct lttng_channel *channel); | |
989 | int lttng_event_enable(struct lttng_event *event); | |
990 | int lttng_event_disable(struct lttng_event *event); | |
e64957da | 991 | |
2b16f0c9 FD |
992 | int lttng_event_notifier_enable(struct lttng_event_notifier *event_notifier); |
993 | int lttng_event_notifier_disable(struct lttng_event_notifier *event_notifier); | |
994 | ||
a90917c3 MD |
995 | void lttng_transport_register(struct lttng_transport *transport); |
996 | void lttng_transport_unregister(struct lttng_transport *transport); | |
11b5a3c2 | 997 | |
a101fa10 MD |
998 | void lttng_counter_transport_register(struct lttng_counter_transport *transport); |
999 | void lttng_counter_transport_unregister(struct lttng_counter_transport *transport); | |
1000 | ||
360f38ea | 1001 | void synchronize_trace(void); |
80996790 | 1002 | int lttng_abi_init(void); |
6dccd6c1 | 1003 | int lttng_abi_compat_old_init(void); |
80996790 | 1004 | void lttng_abi_exit(void); |
6dccd6c1 | 1005 | void lttng_abi_compat_old_exit(void); |
1c25284c | 1006 | |
437d5aa5 MD |
1007 | int lttng_probe_register(struct lttng_kernel_probe_desc *desc); |
1008 | void lttng_probe_unregister(struct lttng_kernel_probe_desc *desc); | |
1009 | const struct lttng_kernel_event_desc *lttng_event_desc_get(const char *name); | |
1010 | void lttng_event_desc_put(const struct lttng_kernel_event_desc *desc); | |
a90917c3 MD |
1011 | int lttng_probes_init(void); |
1012 | void lttng_probes_exit(void); | |
1ec65de1 | 1013 | |
b3b8072b | 1014 | int lttng_metadata_output_channel(struct lttng_metadata_stream *stream, |
8b97fd42 | 1015 | struct channel *chan, bool *coherent); |
d83004aa | 1016 | |
d1f652f8 MD |
1017 | int lttng_id_tracker_get_node_id(const struct lttng_id_hash_node *node); |
1018 | int lttng_id_tracker_empty_set(struct lttng_id_tracker *lf); | |
1019 | void lttng_id_tracker_destroy(struct lttng_id_tracker *lf, bool rcu); | |
1020 | bool lttng_id_tracker_lookup(struct lttng_id_tracker_rcu *p, int id); | |
1021 | int lttng_id_tracker_add(struct lttng_id_tracker *lf, int id); | |
1022 | int lttng_id_tracker_del(struct lttng_id_tracker *lf, int id); | |
e0130fab | 1023 | |
d1f652f8 MD |
1024 | int lttng_session_track_id(struct lttng_session *session, |
1025 | enum tracker_type tracker_type, int id); | |
1026 | int lttng_session_untrack_id(struct lttng_session *session, | |
1027 | enum tracker_type tracker_type, int id); | |
e0130fab | 1028 | |
d1f652f8 MD |
1029 | int lttng_session_list_tracker_ids(struct lttng_session *session, |
1030 | enum tracker_type tracker_type); | |
7e6f9ef6 | 1031 | |
2754583e MD |
1032 | void lttng_clock_ref(void); |
1033 | void lttng_clock_unref(void); | |
1034 | ||
437d5aa5 | 1035 | int lttng_desc_match_enabler(const struct lttng_kernel_event_desc *desc, |
8a8ac9a8 FD |
1036 | struct lttng_enabler *enabler); |
1037 | ||
3a523f5b | 1038 | #if defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS) |
3b82c4e1 MD |
1039 | int lttng_syscalls_register_event(struct lttng_event_enabler *event_enabler, void *filter); |
1040 | int lttng_syscalls_unregister_channel(struct lttng_channel *chan); | |
2d6d88c6 | 1041 | int lttng_syscalls_destroy_event(struct lttng_channel *chan); |
ade8a729 FD |
1042 | int lttng_syscall_filter_enable_event( |
1043 | struct lttng_channel *chan, | |
badfe9f5 | 1044 | struct lttng_event *event); |
ade8a729 FD |
1045 | int lttng_syscall_filter_disable_event( |
1046 | struct lttng_channel *chan, | |
badfe9f5 | 1047 | struct lttng_event *event); |
ade8a729 | 1048 | |
12e579db | 1049 | long lttng_channel_syscall_mask(struct lttng_channel *channel, |
606828e4 | 1050 | struct lttng_kernel_abi_syscall_mask __user *usyscall_mask); |
2d6d88c6 | 1051 | |
8a8ac9a8 FD |
1052 | int lttng_syscalls_register_event_notifier( |
1053 | struct lttng_event_notifier_enabler *event_notifier_enabler, | |
1054 | void *filter); | |
1055 | int lttng_syscals_create_matching_event_notifiers( | |
1056 | struct lttng_event_notifier_enabler *event_notifier_enabler, void *filter); | |
3b82c4e1 | 1057 | int lttng_syscalls_unregister_event_notifier_group(struct lttng_event_notifier_group *group); |
8a8ac9a8 FD |
1058 | int lttng_syscall_filter_enable_event_notifier(struct lttng_event_notifier *event_notifier); |
1059 | int lttng_syscall_filter_disable_event_notifier(struct lttng_event_notifier *event_notifier); | |
1ec65de1 | 1060 | #else |
2d6d88c6 | 1061 | static inline int lttng_syscalls_register_event( |
3b82c4e1 | 1062 | struct lttng_event_enabler *event_enabler, void *filter) |
1ec65de1 MD |
1063 | { |
1064 | return -ENOSYS; | |
1065 | } | |
1066 | ||
3b82c4e1 | 1067 | static inline int lttng_syscalls_unregister_channel(struct lttng_channel *chan) |
1ec65de1 MD |
1068 | { |
1069 | return 0; | |
1070 | } | |
80f87dd2 | 1071 | |
badfe9f5 MD |
1072 | static inline int lttng_syscalls_destroy(struct lttng_channel *chan) |
1073 | { | |
1074 | return 0; | |
1075 | } | |
1076 | ||
2d6d88c6 | 1077 | static inline int lttng_syscall_filter_enable_event(struct lttng_channel *chan, |
badfe9f5 | 1078 | struct lttng_event *event); |
80f87dd2 MD |
1079 | { |
1080 | return -ENOSYS; | |
1081 | } | |
1082 | ||
2d6d88c6 | 1083 | static inline int lttng_syscall_filter_disable_event(struct lttng_channel *chan, |
badfe9f5 | 1084 | struct lttng_event *event); |
80f87dd2 MD |
1085 | { |
1086 | return -ENOSYS; | |
1087 | } | |
12e579db | 1088 | |
f127e61e | 1089 | static inline long lttng_channel_syscall_mask(struct lttng_channel *channel, |
12e579db MD |
1090 | struct lttng_kernel_syscall_mask __user *usyscall_mask) |
1091 | { | |
1092 | return -ENOSYS; | |
1093 | } | |
dffef45d | 1094 | |
8a8ac9a8 FD |
1095 | static inline int lttng_syscalls_register_event_notifier( |
1096 | struct lttng_event_notifier_group *group, void *filter) | |
1097 | { | |
1098 | return -ENOSYS; | |
1099 | } | |
1100 | ||
3b82c4e1 | 1101 | static inline int lttng_syscalls_unregister_event_notifier_group( |
8a8ac9a8 FD |
1102 | struct lttng_event_notifier_group *group) |
1103 | { | |
1104 | return 0; | |
1105 | } | |
1106 | ||
1107 | static inline int lttng_syscall_filter_enable_event_notifier( | |
1108 | struct lttng_event_notifier_group *group, | |
1109 | const char *name) | |
1110 | { | |
1111 | return -ENOSYS; | |
1112 | } | |
1113 | ||
1114 | static inline int lttng_syscall_filter_disable_event_notifier( | |
1115 | struct lttng_event_notifier_group *group, | |
1116 | const char *name) | |
1117 | { | |
1118 | return -ENOSYS; | |
1119 | } | |
1120 | ||
1ec65de1 MD |
1121 | #endif |
1122 | ||
183e8b3a | 1123 | int lttng_event_enabler_attach_filter_bytecode(struct lttng_event_enabler *event_enabler, |
606828e4 | 1124 | struct lttng_kernel_abi_filter_bytecode __user *bytecode); |
183e8b3a | 1125 | int lttng_event_notifier_enabler_attach_filter_bytecode( |
dffef45d | 1126 | struct lttng_event_notifier_enabler *event_notifier_enabler, |
606828e4 | 1127 | struct lttng_kernel_abi_filter_bytecode __user *bytecode); |
99d223ad FD |
1128 | int lttng_event_notifier_enabler_attach_capture_bytecode( |
1129 | struct lttng_event_notifier_enabler *event_notifier_enabler, | |
606828e4 | 1130 | struct lttng_kernel_abi_capture_bytecode __user *bytecode); |
2dfda770 | 1131 | |
437d5aa5 MD |
1132 | void lttng_enabler_link_bytecode(const struct lttng_kernel_event_desc *event_desc, |
1133 | struct lttng_kernel_ctx *ctx, | |
60206944 FD |
1134 | struct list_head *instance_bytecode_runtime_head, |
1135 | struct list_head *enabler_bytecode_runtime_head); | |
966ad253 | 1136 | void lttng_free_event_filter_runtime(struct lttng_event *event); |
3ef5cc03 | 1137 | void lttng_free_event_notifier_filter_runtime(struct lttng_event_notifier *event_notifier); |
07dfc1d0 | 1138 | |
114667d5 MD |
1139 | int lttng_probes_init(void); |
1140 | ||
437d5aa5 | 1141 | extern struct lttng_kernel_ctx *lttng_static_ctx; |
07dfc1d0 MD |
1142 | |
1143 | int lttng_context_init(void); | |
1144 | void lttng_context_exit(void); | |
437d5aa5 MD |
1145 | int lttng_kernel_context_append(struct lttng_kernel_ctx **ctx_p, |
1146 | const struct lttng_kernel_ctx_field *f); | |
1147 | void lttng_kernel_context_remove_last(struct lttng_kernel_ctx **ctx_p); | |
1148 | struct lttng_kernel_ctx_field *lttng_kernel_get_context_field_from_index(struct lttng_kernel_ctx *ctx, | |
c02eb859 | 1149 | size_t index); |
437d5aa5 MD |
1150 | int lttng_kernel_find_context(struct lttng_kernel_ctx *ctx, const char *name); |
1151 | int lttng_kernel_get_context_index(struct lttng_kernel_ctx *ctx, const char *name); | |
1152 | void lttng_kernel_destroy_context(struct lttng_kernel_ctx *ctx); | |
1153 | int lttng_add_pid_to_ctx(struct lttng_kernel_ctx **ctx); | |
1154 | int lttng_add_cpu_id_to_ctx(struct lttng_kernel_ctx **ctx); | |
1155 | int lttng_add_procname_to_ctx(struct lttng_kernel_ctx **ctx); | |
1156 | int lttng_add_prio_to_ctx(struct lttng_kernel_ctx **ctx); | |
1157 | int lttng_add_nice_to_ctx(struct lttng_kernel_ctx **ctx); | |
1158 | int lttng_add_vpid_to_ctx(struct lttng_kernel_ctx **ctx); | |
1159 | int lttng_add_tid_to_ctx(struct lttng_kernel_ctx **ctx); | |
1160 | int lttng_add_vtid_to_ctx(struct lttng_kernel_ctx **ctx); | |
1161 | int lttng_add_ppid_to_ctx(struct lttng_kernel_ctx **ctx); | |
1162 | int lttng_add_vppid_to_ctx(struct lttng_kernel_ctx **ctx); | |
1163 | int lttng_add_hostname_to_ctx(struct lttng_kernel_ctx **ctx); | |
1164 | int lttng_add_interruptible_to_ctx(struct lttng_kernel_ctx **ctx); | |
1165 | int lttng_add_need_reschedule_to_ctx(struct lttng_kernel_ctx **ctx); | |
79150a49 | 1166 | #if defined(CONFIG_PREEMPT_RT_FULL) || defined(CONFIG_PREEMPT) |
437d5aa5 | 1167 | int lttng_add_preemptible_to_ctx(struct lttng_kernel_ctx **ctx); |
79150a49 JD |
1168 | #else |
1169 | static inline | |
437d5aa5 | 1170 | int lttng_add_preemptible_to_ctx(struct lttng_kernel_ctx **ctx) |
79150a49 JD |
1171 | { |
1172 | return -ENOSYS; | |
1173 | } | |
1174 | #endif | |
1175 | #ifdef CONFIG_PREEMPT_RT_FULL | |
437d5aa5 | 1176 | int lttng_add_migratable_to_ctx(struct lttng_kernel_ctx **ctx); |
79150a49 JD |
1177 | #else |
1178 | static inline | |
437d5aa5 | 1179 | int lttng_add_migratable_to_ctx(struct lttng_kernel_ctx **ctx) |
79150a49 JD |
1180 | { |
1181 | return -ENOSYS; | |
1182 | } | |
1183 | #endif | |
2fa2d39a | 1184 | |
437d5aa5 | 1185 | int lttng_add_callstack_to_ctx(struct lttng_kernel_ctx **ctx, int type); |
2fa2d39a | 1186 | |
a6cf40a4 | 1187 | #if defined(CONFIG_CGROUPS) && \ |
5f4c791e | 1188 | ((LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,6,0)) || \ |
a6cf40a4 | 1189 | LTTNG_UBUNTU_KERNEL_RANGE(4,4,0,0, 4,5,0,0)) |
437d5aa5 | 1190 | int lttng_add_cgroup_ns_to_ctx(struct lttng_kernel_ctx **ctx); |
a6cf40a4 MJ |
1191 | #else |
1192 | static inline | |
437d5aa5 | 1193 | int lttng_add_cgroup_ns_to_ctx(struct lttng_kernel_ctx **ctx) |
a6cf40a4 MJ |
1194 | { |
1195 | return -ENOSYS; | |
1196 | } | |
1197 | #endif | |
1198 | ||
1199 | #if defined(CONFIG_IPC_NS) && \ | |
5f4c791e | 1200 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) |
437d5aa5 | 1201 | int lttng_add_ipc_ns_to_ctx(struct lttng_kernel_ctx **ctx); |
a6cf40a4 MJ |
1202 | #else |
1203 | static inline | |
437d5aa5 | 1204 | int lttng_add_ipc_ns_to_ctx(struct lttng_kernel_ctx **ctx) |
a6cf40a4 MJ |
1205 | { |
1206 | return -ENOSYS; | |
1207 | } | |
1208 | #endif | |
1209 | ||
1210 | #if !defined(LTTNG_MNT_NS_MISSING_HEADER) && \ | |
5f4c791e | 1211 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) |
437d5aa5 | 1212 | int lttng_add_mnt_ns_to_ctx(struct lttng_kernel_ctx **ctx); |
a6cf40a4 MJ |
1213 | #else |
1214 | static inline | |
437d5aa5 | 1215 | int lttng_add_mnt_ns_to_ctx(struct lttng_kernel_ctx **ctx) |
a6cf40a4 MJ |
1216 | { |
1217 | return -ENOSYS; | |
1218 | } | |
1219 | #endif | |
1220 | ||
1221 | #if defined(CONFIG_NET_NS) && \ | |
5f4c791e | 1222 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) |
437d5aa5 | 1223 | int lttng_add_net_ns_to_ctx(struct lttng_kernel_ctx **ctx); |
a6cf40a4 MJ |
1224 | #else |
1225 | static inline | |
437d5aa5 | 1226 | int lttng_add_net_ns_to_ctx(struct lttng_kernel_ctx **ctx) |
a6cf40a4 MJ |
1227 | { |
1228 | return -ENOSYS; | |
1229 | } | |
1230 | #endif | |
1231 | ||
1232 | #if defined(CONFIG_PID_NS) && \ | |
5f4c791e | 1233 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) |
437d5aa5 | 1234 | int lttng_add_pid_ns_to_ctx(struct lttng_kernel_ctx **ctx); |
a6cf40a4 MJ |
1235 | #else |
1236 | static inline | |
437d5aa5 | 1237 | int lttng_add_pid_ns_to_ctx(struct lttng_kernel_ctx **ctx) |
a6cf40a4 MJ |
1238 | { |
1239 | return -ENOSYS; | |
1240 | } | |
1241 | #endif | |
1242 | ||
1243 | #if defined(CONFIG_USER_NS) && \ | |
5f4c791e | 1244 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) |
437d5aa5 | 1245 | int lttng_add_user_ns_to_ctx(struct lttng_kernel_ctx **ctx); |
a6cf40a4 MJ |
1246 | #else |
1247 | static inline | |
437d5aa5 | 1248 | int lttng_add_user_ns_to_ctx(struct lttng_kernel_ctx **ctx) |
a6cf40a4 MJ |
1249 | { |
1250 | return -ENOSYS; | |
1251 | } | |
1252 | #endif | |
1253 | ||
1254 | #if defined(CONFIG_UTS_NS) && \ | |
5f4c791e | 1255 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) |
437d5aa5 | 1256 | int lttng_add_uts_ns_to_ctx(struct lttng_kernel_ctx **ctx); |
a6cf40a4 MJ |
1257 | #else |
1258 | static inline | |
437d5aa5 | 1259 | int lttng_add_uts_ns_to_ctx(struct lttng_kernel_ctx **ctx) |
a6cf40a4 MJ |
1260 | { |
1261 | return -ENOSYS; | |
1262 | } | |
1263 | #endif | |
1264 | ||
876e2e92 | 1265 | #if defined(CONFIG_TIME_NS) && \ |
5f4c791e | 1266 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,6,0)) |
437d5aa5 | 1267 | int lttng_add_time_ns_to_ctx(struct lttng_kernel_ctx **ctx); |
876e2e92 MJ |
1268 | #else |
1269 | static inline | |
437d5aa5 | 1270 | int lttng_add_time_ns_to_ctx(struct lttng_kernel_ctx **ctx) |
876e2e92 MJ |
1271 | { |
1272 | return -ENOSYS; | |
1273 | } | |
1274 | #endif | |
1275 | ||
437d5aa5 MD |
1276 | int lttng_add_uid_to_ctx(struct lttng_kernel_ctx **ctx); |
1277 | int lttng_add_euid_to_ctx(struct lttng_kernel_ctx **ctx); | |
1278 | int lttng_add_suid_to_ctx(struct lttng_kernel_ctx **ctx); | |
1279 | int lttng_add_gid_to_ctx(struct lttng_kernel_ctx **ctx); | |
1280 | int lttng_add_egid_to_ctx(struct lttng_kernel_ctx **ctx); | |
1281 | int lttng_add_sgid_to_ctx(struct lttng_kernel_ctx **ctx); | |
1282 | int lttng_add_vuid_to_ctx(struct lttng_kernel_ctx **ctx); | |
1283 | int lttng_add_veuid_to_ctx(struct lttng_kernel_ctx **ctx); | |
1284 | int lttng_add_vsuid_to_ctx(struct lttng_kernel_ctx **ctx); | |
1285 | int lttng_add_vgid_to_ctx(struct lttng_kernel_ctx **ctx); | |
1286 | int lttng_add_vegid_to_ctx(struct lttng_kernel_ctx **ctx); | |
1287 | int lttng_add_vsgid_to_ctx(struct lttng_kernel_ctx **ctx); | |
dc923e75 | 1288 | |
8a3af9ee | 1289 | #if defined(CONFIG_PERF_EVENTS) |
c24a0d71 MD |
1290 | int lttng_add_perf_counter_to_ctx(uint32_t type, |
1291 | uint64_t config, | |
1292 | const char *name, | |
437d5aa5 | 1293 | struct lttng_kernel_ctx **ctx); |
1e367326 MD |
1294 | int lttng_cpuhp_perf_counter_online(unsigned int cpu, |
1295 | struct lttng_cpuhp_node *node); | |
1296 | int lttng_cpuhp_perf_counter_dead(unsigned int cpu, | |
1297 | struct lttng_cpuhp_node *node); | |
1d443b34 MD |
1298 | #else |
1299 | static inline | |
1300 | int lttng_add_perf_counter_to_ctx(uint32_t type, | |
1301 | uint64_t config, | |
1302 | const char *name, | |
437d5aa5 | 1303 | struct lttng_kernel_ctx **ctx) |
1d443b34 MD |
1304 | { |
1305 | return -ENOSYS; | |
1306 | } | |
1e367326 MD |
1307 | static inline |
1308 | int lttng_cpuhp_perf_counter_online(unsigned int cpu, | |
1309 | struct lttng_cpuhp_node *node) | |
1310 | { | |
1311 | return 0; | |
1312 | } | |
1313 | static inline | |
1314 | int lttng_cpuhp_perf_counter_dead(unsigned int cpu, | |
1315 | struct lttng_cpuhp_node *node) | |
1316 | { | |
1317 | return 0; | |
1318 | } | |
1d443b34 | 1319 | #endif |
02119ee5 | 1320 | |
0c956676 MD |
1321 | int lttng_logger_init(void); |
1322 | void lttng_logger_exit(void); | |
1323 | ||
c337ddc2 MD |
1324 | extern int lttng_statedump_start(struct lttng_session *session); |
1325 | ||
acd614cc | 1326 | #ifdef CONFIG_KPROBES |
8bf17deb | 1327 | int lttng_kprobes_register_event(const char *name, |
f17701fb MD |
1328 | const char *symbol_name, |
1329 | uint64_t offset, | |
1330 | uint64_t addr, | |
a90917c3 | 1331 | struct lttng_event *event); |
8bf17deb FD |
1332 | void lttng_kprobes_unregister_event(struct lttng_event *event); |
1333 | void lttng_kprobes_destroy_event_private(struct lttng_event *event); | |
2b16f0c9 FD |
1334 | int lttng_kprobes_register_event_notifier(const char *symbol_name, |
1335 | uint64_t offset, | |
1336 | uint64_t addr, | |
1337 | struct lttng_event_notifier *event_notifier); | |
1338 | void lttng_kprobes_unregister_event_notifier(struct lttng_event_notifier *event_notifier); | |
1339 | void lttng_kprobes_destroy_event_notifier_private(struct lttng_event_notifier *event_notifier); | |
acd614cc MD |
1340 | #else |
1341 | static inline | |
8bf17deb | 1342 | int lttng_kprobes_register_event(const char *name, |
acd614cc MD |
1343 | const char *symbol_name, |
1344 | uint64_t offset, | |
1345 | uint64_t addr, | |
a90917c3 | 1346 | struct lttng_event *event) |
acd614cc MD |
1347 | { |
1348 | return -ENOSYS; | |
1349 | } | |
1350 | ||
25f53c39 | 1351 | static inline |
8bf17deb FD |
1352 | void lttng_kprobes_unregister_event(struct lttng_event *event) |
1353 | { | |
1354 | } | |
1355 | ||
1356 | static inline | |
1357 | void lttng_kprobes_destroy_event_private(struct lttng_event *event) | |
acd614cc MD |
1358 | { |
1359 | } | |
edeb3137 MD |
1360 | |
1361 | static inline | |
2b16f0c9 FD |
1362 | int lttng_kprobes_register_event_notifier(const char *symbol_name, |
1363 | uint64_t offset, | |
1364 | uint64_t addr, | |
1365 | struct lttng_event_notifier *event_notifier) | |
1366 | { | |
1367 | return -ENOSYS; | |
1368 | } | |
1369 | ||
1370 | static inline | |
1371 | void lttng_kprobes_unregister_event_notifier(struct lttng_event_notifier *event_notifier) | |
1372 | { | |
1373 | } | |
1374 | ||
1375 | static inline | |
1376 | void lttng_kprobes_destroy_event_notifier_private(struct lttng_event_notifier *event_notifier) | |
edeb3137 MD |
1377 | { |
1378 | } | |
acd614cc | 1379 | #endif |
d6d808f3 | 1380 | |
3aed4dca | 1381 | int lttng_event_add_callsite(struct lttng_event *event, |
606828e4 | 1382 | struct lttng_kernel_abi_event_callsite __user *callsite); |
e33fc900 | 1383 | |
9de67196 | 1384 | int lttng_event_notifier_add_callsite(struct lttng_event_notifier *event_notifier, |
606828e4 | 1385 | struct lttng_kernel_abi_event_callsite __user *callsite); |
9de67196 | 1386 | |
149b9a9d | 1387 | #ifdef CONFIG_UPROBES |
83b802dc | 1388 | int lttng_uprobes_register_event(const char *name, |
3aed4dca | 1389 | int fd, struct lttng_event *event); |
83b802dc | 1390 | int lttng_uprobes_event_add_callsite(struct lttng_event *event, |
606828e4 | 1391 | struct lttng_kernel_abi_event_callsite __user *callsite); |
83b802dc FD |
1392 | void lttng_uprobes_unregister_event(struct lttng_event *event); |
1393 | void lttng_uprobes_destroy_event_private(struct lttng_event *event); | |
9de67196 FD |
1394 | int lttng_uprobes_register_event_notifier(const char *name, |
1395 | int fd, struct lttng_event_notifier *event_notifier); | |
1396 | int lttng_uprobes_event_notifier_add_callsite(struct lttng_event_notifier *event_notifier, | |
606828e4 | 1397 | struct lttng_kernel_abi_event_callsite __user *callsite); |
9de67196 FD |
1398 | void lttng_uprobes_unregister_event_notifier(struct lttng_event_notifier *event_notifier); |
1399 | void lttng_uprobes_destroy_event_notifier_private(struct lttng_event_notifier *event_notifier); | |
149b9a9d YB |
1400 | #else |
1401 | static inline | |
83b802dc | 1402 | int lttng_uprobes_register_event(const char *name, |
3aed4dca FD |
1403 | int fd, struct lttng_event *event) |
1404 | { | |
1405 | return -ENOSYS; | |
1406 | } | |
1407 | ||
1408 | static inline | |
83b802dc | 1409 | int lttng_uprobes_event_add_callsite(struct lttng_event *event, |
606828e4 | 1410 | struct lttng_kernel_abi_event_callsite __user *callsite) |
149b9a9d YB |
1411 | { |
1412 | return -ENOSYS; | |
1413 | } | |
1414 | ||
1415 | static inline | |
83b802dc | 1416 | void lttng_uprobes_unregister_event(struct lttng_event *event) |
149b9a9d YB |
1417 | { |
1418 | } | |
1419 | ||
1420 | static inline | |
83b802dc | 1421 | void lttng_uprobes_destroy_event_private(struct lttng_event *event) |
149b9a9d YB |
1422 | { |
1423 | } | |
9de67196 FD |
1424 | |
1425 | static inline | |
1426 | int lttng_uprobes_register_event_notifier(const char *name, | |
1427 | int fd, struct lttng_event_notifier *event_notifier) | |
1428 | { | |
1429 | return -ENOSYS; | |
1430 | } | |
1431 | ||
1432 | static inline | |
1433 | int lttng_uprobes_event_notifier_add_callsite(struct lttng_event_notifier *event_notifier, | |
606828e4 | 1434 | struct lttng_kernel_abi_event_callsite __user *callsite) |
9de67196 FD |
1435 | { |
1436 | return -ENOSYS; | |
1437 | } | |
1438 | ||
1439 | static inline | |
1440 | void lttng_uprobes_unregister_event_notifier(struct lttng_event_notifier *event_notifier) | |
1441 | { | |
1442 | } | |
1443 | ||
1444 | static inline | |
1445 | void lttng_uprobes_destroy_event_notifier_private(struct lttng_event_notifier *event_notifier) | |
1446 | { | |
1447 | } | |
149b9a9d YB |
1448 | #endif |
1449 | ||
7371f44c MD |
1450 | #ifdef CONFIG_KRETPROBES |
1451 | int lttng_kretprobes_register(const char *name, | |
1452 | const char *symbol_name, | |
1453 | uint64_t offset, | |
1454 | uint64_t addr, | |
a90917c3 MD |
1455 | struct lttng_event *event_entry, |
1456 | struct lttng_event *event_exit); | |
1457 | void lttng_kretprobes_unregister(struct lttng_event *event); | |
1458 | void lttng_kretprobes_destroy_private(struct lttng_event *event); | |
a0493bef MD |
1459 | int lttng_kretprobes_event_enable_state(struct lttng_event *event, |
1460 | int enable); | |
7371f44c MD |
1461 | #else |
1462 | static inline | |
1463 | int lttng_kretprobes_register(const char *name, | |
1464 | const char *symbol_name, | |
1465 | uint64_t offset, | |
1466 | uint64_t addr, | |
a90917c3 MD |
1467 | struct lttng_event *event_entry, |
1468 | struct lttng_event *event_exit) | |
7371f44c MD |
1469 | { |
1470 | return -ENOSYS; | |
1471 | } | |
1472 | ||
1473 | static inline | |
a90917c3 | 1474 | void lttng_kretprobes_unregister(struct lttng_event *event) |
7371f44c MD |
1475 | { |
1476 | } | |
1477 | ||
1478 | static inline | |
a90917c3 | 1479 | void lttng_kretprobes_destroy_private(struct lttng_event *event) |
7371f44c MD |
1480 | { |
1481 | } | |
a0493bef MD |
1482 | |
1483 | static inline | |
1484 | int lttng_kretprobes_event_enable_state(struct lttng_event *event, | |
1485 | int enable) | |
1486 | { | |
1487 | return -ENOSYS; | |
1488 | } | |
7371f44c MD |
1489 | #endif |
1490 | ||
606828e4 | 1491 | int lttng_calibrate(struct lttng_kernel_abi_calibrate *calibrate); |
57105fc2 | 1492 | |
271b6681 | 1493 | extern const struct file_operations lttng_tracepoint_list_fops; |
2d2464bd | 1494 | extern const struct file_operations lttng_syscall_list_fops; |
271b6681 | 1495 | |
ef200626 | 1496 | #define TRACEPOINT_HAS_DATA_ARG |
ef200626 | 1497 | |
a90917c3 | 1498 | #endif /* _LTTNG_EVENTS_H */ |