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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 | |
06254b0f | 26 | #define lttng_is_signed_type(type) (((type)(-1)) < 0) |
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 | ||
c0edae1d MD |
38 | enum abstract_types { |
39 | atype_integer, | |
c0edae1d | 40 | atype_string, |
ceabb767 MD |
41 | atype_enum_nestable, |
42 | atype_array_nestable, | |
43 | atype_sequence_nestable, | |
44 | atype_struct_nestable, | |
45 | atype_variant_nestable, | |
c0edae1d MD |
46 | NR_ABSTRACT_TYPES, |
47 | }; | |
48 | ||
c0edae1d | 49 | enum lttng_string_encodings { |
e0a7a7c4 MD |
50 | lttng_encode_none = 0, |
51 | lttng_encode_UTF8 = 1, | |
52 | lttng_encode_ASCII = 2, | |
c0edae1d MD |
53 | NR_STRING_ENCODINGS, |
54 | }; | |
55 | ||
d83004aa JD |
56 | enum channel_type { |
57 | PER_CPU_CHANNEL, | |
58 | METADATA_CHANNEL, | |
59 | }; | |
60 | ||
141ddf28 MD |
61 | struct lttng_enum_value { |
62 | unsigned long long value; | |
63 | unsigned int signedness:1; | |
64 | }; | |
65 | ||
c0edae1d | 66 | struct lttng_enum_entry { |
141ddf28 | 67 | struct lttng_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 | ||
43803cf2 MD |
74 | #define __type_integer(_type, _size, _alignment, _signedness, \ |
75 | _byte_order, _base, _encoding) \ | |
c099397a MD |
76 | { \ |
77 | .atype = atype_integer, \ | |
ceabb767 | 78 | .u.integer = \ |
c099397a | 79 | { \ |
43803cf2 MD |
80 | .size = (_size) ? : sizeof(_type) * CHAR_BIT, \ |
81 | .alignment = (_alignment) ? : lttng_alignof(_type) * CHAR_BIT, \ | |
82 | .signedness = (_signedness) >= 0 ? (_signedness) : lttng_is_signed_type(_type), \ | |
83 | .reverse_byte_order = _byte_order != __BYTE_ORDER, \ | |
e0a7a7c4 | 84 | .base = _base, \ |
64c796d8 | 85 | .encoding = lttng_encode_##_encoding, \ |
c099397a MD |
86 | }, \ |
87 | } \ | |
88 | ||
89 | struct lttng_integer_type { | |
90 | unsigned int size; /* in bits */ | |
91 | unsigned short alignment; /* in bits */ | |
9cccf98a MD |
92 | unsigned int signedness:1, |
93 | reverse_byte_order:1; | |
e0a7a7c4 MD |
94 | unsigned int base; /* 2, 8, 10, 16, for pretty print */ |
95 | enum lttng_string_encodings encoding; | |
c099397a MD |
96 | }; |
97 | ||
c0edae1d MD |
98 | struct lttng_type { |
99 | enum abstract_types atype; | |
c0edae1d | 100 | union { |
ceabb767 | 101 | struct lttng_integer_type integer; |
c0edae1d | 102 | struct { |
ceabb767 MD |
103 | enum lttng_string_encodings encoding; |
104 | } string; | |
c0edae1d | 105 | struct { |
ceabb767 MD |
106 | const struct lttng_enum_desc *desc; /* Enumeration mapping */ |
107 | const struct lttng_type *container_type; | |
108 | } enum_nestable; | |
f513b2bf | 109 | struct { |
ceabb767 MD |
110 | const struct lttng_type *elem_type; |
111 | unsigned int length; /* Num. elems. */ | |
112 | unsigned int alignment; | |
113 | } array_nestable; | |
f513b2bf | 114 | struct { |
ceabb767 MD |
115 | const char *length_name; /* Length field name. */ |
116 | const struct lttng_type *elem_type; | |
117 | unsigned int alignment; /* Alignment before elements. */ | |
118 | } sequence_nestable; | |
f513b2bf | 119 | struct { |
ceabb767 MD |
120 | unsigned int nr_fields; |
121 | const struct lttng_event_field *fields; /* Array of fields. */ | |
122 | unsigned int alignment; | |
123 | } struct_nestable; | |
65c85aa6 MD |
124 | struct { |
125 | const char *tag_name; | |
ceabb767 MD |
126 | const struct lttng_event_field *choices; /* Array of fields. */ |
127 | unsigned int nr_choices; | |
128 | unsigned int alignment; | |
129 | } variant_nestable; | |
c0edae1d | 130 | } u; |
c099397a MD |
131 | }; |
132 | ||
141ddf28 | 133 | struct lttng_enum_desc { |
c099397a | 134 | const char *name; |
c099397a | 135 | const struct lttng_enum_entry *entries; |
141ddf28 | 136 | unsigned int nr_entries; |
c099397a | 137 | }; |
c0edae1d MD |
138 | |
139 | /* Event field description */ | |
140 | ||
141 | struct lttng_event_field { | |
142 | const char *name; | |
f17701fb | 143 | struct lttng_type 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 | ||
07dfc1d0 MD |
149 | union lttng_ctx_value { |
150 | int64_t s64; | |
151 | const char *str; | |
152 | double d; | |
153 | }; | |
154 | ||
2001023e MD |
155 | /* |
156 | * We need to keep this perf counter field separately from struct | |
157 | * lttng_ctx_field because cpu hotplug needs fixed-location addresses. | |
158 | */ | |
159 | struct lttng_perf_counter_field { | |
5f4c791e | 160 | #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) |
1e367326 MD |
161 | struct lttng_cpuhp_node cpuhp_prepare; |
162 | struct lttng_cpuhp_node cpuhp_online; | |
163 | #else | |
2001023e MD |
164 | struct notifier_block nb; |
165 | int hp_enable; | |
1e367326 | 166 | #endif |
2001023e MD |
167 | struct perf_event_attr *attr; |
168 | struct perf_event **e; /* per-cpu array */ | |
169 | }; | |
170 | ||
79150a49 JD |
171 | struct lttng_probe_ctx { |
172 | struct lttng_event *event; | |
7fad9b39 | 173 | struct lttng_event_notifier *event_notifier; // Not sure if we will ever need it. |
79150a49 JD |
174 | uint8_t interruptible; |
175 | }; | |
176 | ||
ba1f5986 | 177 | struct lttng_ctx_field { |
8070f5c0 | 178 | struct lttng_event_field event_field; |
f1676205 | 179 | size_t (*get_size)(size_t offset); |
1474c8e2 FG |
180 | size_t (*get_size_arg)(size_t offset, struct lttng_ctx_field *field, |
181 | struct lib_ring_buffer_ctx *ctx, | |
182 | struct lttng_channel *chan); | |
f1676205 MD |
183 | void (*record)(struct lttng_ctx_field *field, |
184 | struct lib_ring_buffer_ctx *ctx, | |
a90917c3 | 185 | struct lttng_channel *chan); |
07dfc1d0 | 186 | void (*get_value)(struct lttng_ctx_field *field, |
79150a49 | 187 | struct lttng_probe_ctx *lttng_probe_ctx, |
07dfc1d0 | 188 | union lttng_ctx_value *value); |
ba1f5986 | 189 | union { |
2001023e | 190 | struct lttng_perf_counter_field *perf_counter; |
ba1f5986 | 191 | } u; |
2dccf128 | 192 | void (*destroy)(struct lttng_ctx_field *field); |
3c1a57e8 MD |
193 | /* |
194 | * Private data to keep state between get_size and record. | |
195 | * User must perform its own synchronization to protect against | |
196 | * concurrent and reentrant contexts. | |
197 | */ | |
198 | void *priv; | |
ba1f5986 MD |
199 | }; |
200 | ||
201 | struct lttng_ctx { | |
833ad6a0 | 202 | struct lttng_ctx_field *fields; |
0d1a681e | 203 | unsigned int nr_fields; |
ba1f5986 | 204 | unsigned int allocated_fields; |
a9dd15da | 205 | size_t largest_align; /* in bytes */ |
0d1a681e MD |
206 | }; |
207 | ||
208 | struct lttng_event_desc { | |
a26a7e4f MD |
209 | const char *name; /* lttng-modules name */ |
210 | const char *kname; /* Linux kernel name (tracepoints) */ | |
0c023c01 | 211 | void *probe_callback; /* store-event and count-event probe */ |
0d1a681e MD |
212 | const struct lttng_event_ctx *ctx; /* context */ |
213 | const struct lttng_event_field *fields; /* event payload */ | |
c0edae1d | 214 | unsigned int nr_fields; |
dc7f600a | 215 | struct module *owner; |
7fad9b39 | 216 | void *event_notifier_callback; |
c0edae1d MD |
217 | }; |
218 | ||
85a9ca7f | 219 | struct lttng_probe_desc { |
3c997079 | 220 | const char *provider; |
f7bdf4db | 221 | const struct lttng_event_desc **event_desc; |
85a9ca7f MD |
222 | unsigned int nr_events; |
223 | struct list_head head; /* chain registered probes */ | |
3c997079 MD |
224 | struct list_head lazy_init_head; |
225 | int lazy; /* lazy registration */ | |
85a9ca7f MD |
226 | }; |
227 | ||
7371f44c MD |
228 | struct lttng_krp; /* Kretprobe handling */ |
229 | ||
3c997079 MD |
230 | enum lttng_event_type { |
231 | LTTNG_TYPE_EVENT = 0, | |
232 | LTTNG_TYPE_ENABLER = 1, | |
233 | }; | |
234 | ||
89ec2b91 FD |
235 | enum lttng_bytecode_node_type { |
236 | LTTNG_BYTECODE_NODE_TYPE_FILTER, | |
99d223ad | 237 | LTTNG_BYTECODE_NODE_TYPE_CAPTURE, |
89ec2b91 FD |
238 | }; |
239 | ||
240 | struct lttng_bytecode_node { | |
241 | enum lttng_bytecode_node_type type; | |
07dfc1d0 MD |
242 | struct list_head node; |
243 | struct lttng_enabler *enabler; | |
89ec2b91 FD |
244 | struct { |
245 | uint32_t len; | |
246 | uint32_t reloc_offset; | |
247 | uint64_t seqnum; | |
248 | char data[]; | |
249 | } bc; | |
07dfc1d0 MD |
250 | }; |
251 | ||
252 | /* | |
80c2a69a | 253 | * Bytecode interpreter return value masks. |
07dfc1d0 | 254 | */ |
80c2a69a FD |
255 | enum lttng_bytecode_interpreter_ret { |
256 | LTTNG_INTERPRETER_DISCARD = 0, | |
257 | LTTNG_INTERPRETER_RECORD_FLAG = (1ULL << 0), | |
07dfc1d0 MD |
258 | /* Other bits are kept for future use. */ |
259 | }; | |
260 | ||
99d223ad FD |
261 | struct lttng_interpreter_output; |
262 | ||
07dfc1d0 MD |
263 | struct lttng_bytecode_runtime { |
264 | /* Associated bytecode */ | |
89ec2b91 | 265 | struct lttng_bytecode_node *bc; |
3d650c7b FD |
266 | union { |
267 | uint64_t (*filter)(void *filter_data, | |
268 | struct lttng_probe_ctx *lttng_probe_ctx, | |
269 | const char *filter_stack_data); | |
99d223ad FD |
270 | uint64_t (*capture)(void *filter_data, |
271 | struct lttng_probe_ctx *lttng_probe_ctx, | |
272 | const char *capture_stack_data, | |
273 | struct lttng_interpreter_output *output); | |
3d650c7b | 274 | } interpreter_funcs; |
07dfc1d0 MD |
275 | int link_failed; |
276 | struct list_head node; /* list of bytecode runtime in event */ | |
2dfda770 | 277 | struct lttng_ctx *ctx; |
07dfc1d0 MD |
278 | }; |
279 | ||
3c997079 MD |
280 | /* |
281 | * Objects in a linked-list of enablers, owned by an event. | |
282 | */ | |
283 | struct lttng_enabler_ref { | |
284 | struct list_head node; /* enabler ref list */ | |
285 | struct lttng_enabler *ref; /* backward ref */ | |
286 | }; | |
287 | ||
3aed4dca | 288 | struct lttng_uprobe_handler { |
83b802dc FD |
289 | union { |
290 | struct lttng_event *event; | |
9de67196 | 291 | struct lttng_event_notifier *event_notifier; |
83b802dc | 292 | } u; |
3aed4dca FD |
293 | loff_t offset; |
294 | struct uprobe_consumer up_consumer; | |
295 | struct list_head node; | |
296 | }; | |
297 | ||
8bf17deb FD |
298 | struct lttng_kprobe { |
299 | struct kprobe kp; | |
300 | char *symbol_name; | |
0c023c01 | 301 | uint64_t user_token; |
8bf17deb FD |
302 | }; |
303 | ||
83b802dc FD |
304 | struct lttng_uprobe { |
305 | struct inode *inode; | |
306 | struct list_head head; | |
0c023c01 | 307 | uint64_t user_token; |
83b802dc FD |
308 | }; |
309 | ||
badfe9f5 MD |
310 | enum lttng_syscall_entryexit { |
311 | LTTNG_SYSCALL_ENTRY, | |
312 | LTTNG_SYSCALL_EXIT, | |
313 | }; | |
314 | ||
315 | enum lttng_syscall_abi { | |
316 | LTTNG_SYSCALL_ABI_NATIVE, | |
317 | LTTNG_SYSCALL_ABI_COMPAT, | |
318 | }; | |
319 | ||
0c023c01 MD |
320 | struct lttng_syscall { |
321 | struct list_head node; /* chain registered syscall trigger */ | |
322 | unsigned int syscall_id; | |
323 | bool is_compat; | |
324 | }; | |
325 | ||
326 | enum lttng_key_token_type { | |
327 | LTTNG_KEY_TOKEN_STRING = 0, | |
328 | LTTNG_KEY_TOKEN_EVENT_NAME = 1, | |
329 | }; | |
330 | ||
331 | #define LTTNG_KEY_TOKEN_STRING_LEN_MAX LTTNG_KERNEL_KEY_TOKEN_STRING_LEN_MAX | |
332 | struct lttng_key_token { | |
333 | enum lttng_key_token_type type; | |
334 | union { | |
335 | char string[LTTNG_KEY_TOKEN_STRING_LEN_MAX]; | |
336 | } arg; | |
337 | }; | |
338 | ||
339 | #define LTTNG_NR_KEY_TOKEN LTTNG_KERNEL_NR_KEY_TOKEN | |
340 | struct lttng_counter_key_dimension { | |
341 | size_t nr_key_tokens; | |
342 | struct lttng_key_token key_tokens[LTTNG_KERNEL_NR_KEY_TOKEN]; | |
343 | }; | |
344 | ||
345 | #define LTTNG_COUNTER_DIMENSION_MAX LTTNG_KERNEL_COUNTER_DIMENSION_MAX | |
346 | struct lttng_counter_key { | |
347 | size_t nr_dimensions; | |
348 | struct lttng_counter_key_dimension key_dimensions[LTTNG_COUNTER_DIMENSION_MAX]; | |
349 | }; | |
350 | ||
351 | #define LTTNG_KEY_TOKEN_STRING_LEN_MAX LTTNG_KERNEL_KEY_TOKEN_STRING_LEN_MAX | |
352 | ||
85a9ca7f | 353 | /* |
a90917c3 | 354 | * lttng_event structure is referred to by the tracing fast path. It must be |
85a9ca7f MD |
355 | * kept small. |
356 | */ | |
a90917c3 | 357 | struct lttng_event { |
3c997079 | 358 | enum lttng_event_type evtype; /* First field. */ |
0c023c01 MD |
359 | struct lttng_event_container *container; |
360 | size_t id; | |
e64957da | 361 | int enabled; |
d3dbe23c | 362 | const struct lttng_event_desc *desc; |
85a9ca7f | 363 | void *filter; |
f1676205 | 364 | struct lttng_ctx *ctx; |
38d024ae | 365 | enum lttng_kernel_instrumentation instrumentation; |
d6d808f3 | 366 | union { |
8bf17deb | 367 | struct lttng_kprobe kprobe; |
7371f44c MD |
368 | struct { |
369 | struct lttng_krp *lttng_krp; | |
370 | char *symbol_name; | |
0c023c01 | 371 | uint64_t user_token; |
7371f44c | 372 | } kretprobe; |
83b802dc | 373 | struct lttng_uprobe uprobe; |
badfe9f5 | 374 | struct { |
badfe9f5 MD |
375 | enum lttng_syscall_entryexit entryexit; |
376 | enum lttng_syscall_abi abi; | |
3b82c4e1 | 377 | struct hlist_node node; /* chain registered syscall event */ |
badfe9f5 | 378 | } syscall; |
d6d808f3 | 379 | } u; |
3c997079 | 380 | struct list_head list; /* Event list in session */ |
9cccf98a | 381 | unsigned int metadata_dumped:1; |
3c997079 MD |
382 | |
383 | /* Backward references: list of lttng_enabler_ref (ref to enablers) */ | |
384 | struct list_head enablers_ref_head; | |
0c023c01 MD |
385 | struct hlist_node name_hlist; /* session ht of events, per event name */ |
386 | struct hlist_node key_hlist; /* session ht of events, per key */ | |
3c997079 | 387 | int registered; /* has reg'd tracepoint probe */ |
07dfc1d0 | 388 | /* list of struct lttng_bytecode_runtime, sorted by seqnum */ |
183e8b3a | 389 | struct list_head filter_bytecode_runtime_head; |
07dfc1d0 | 390 | int has_enablers_without_bytecode; |
0c023c01 MD |
391 | |
392 | /* List node of actions to perform (for syscall events). */ | |
393 | struct hlist_node action_list; | |
394 | ||
395 | char key[LTTNG_KEY_TOKEN_STRING_LEN_MAX]; | |
396 | ||
397 | /* | |
398 | * For non-coalesce-hit event containers, each event is | |
399 | * associated with a single event enabler user_token. | |
400 | */ | |
401 | uint64_t user_token; | |
402 | }; | |
403 | ||
404 | struct lttng_kernel_notifier_ctx { | |
405 | int eval_capture; | |
3c997079 MD |
406 | }; |
407 | ||
dffef45d FD |
408 | // FIXME: Really similar to lttng_event above. Could those be merged ? |
409 | struct lttng_event_notifier { | |
410 | enum lttng_event_type evtype; /* First field. */ | |
411 | uint64_t user_token; | |
99f52fcc | 412 | uint64_t error_counter_index; |
dffef45d FD |
413 | int enabled; |
414 | int registered; /* has reg'd tracepoint probe */ | |
415 | const struct lttng_event_desc *desc; | |
416 | void *filter; | |
417 | struct list_head list; /* event_notifier list in event_notifier group */ | |
418 | ||
419 | enum lttng_kernel_instrumentation instrumentation; | |
420 | union { | |
2b16f0c9 | 421 | struct lttng_kprobe kprobe; |
9de67196 | 422 | struct lttng_uprobe uprobe; |
8a8ac9a8 FD |
423 | struct { |
424 | enum lttng_syscall_entryexit entryexit; | |
425 | enum lttng_syscall_abi abi; | |
426 | struct hlist_node node; /* chain registered syscall event_notifier */ | |
427 | unsigned int syscall_id; | |
428 | } syscall; | |
429 | ||
dffef45d FD |
430 | } u; |
431 | ||
432 | /* Backward references: list of lttng_enabler_ref (ref to enablers) */ | |
433 | struct list_head enablers_ref_head; | |
434 | struct hlist_node hlist; /* session ht of event_notifiers */ | |
435 | /* list of struct lttng_bytecode_runtime, sorted by seqnum */ | |
183e8b3a | 436 | struct list_head filter_bytecode_runtime_head; |
99d223ad FD |
437 | size_t num_captures; |
438 | struct list_head capture_bytecode_runtime_head; | |
dffef45d | 439 | int has_enablers_without_bytecode; |
0c023c01 | 440 | int eval_capture; /* Should evaluate capture */ |
dffef45d | 441 | |
99d223ad FD |
442 | void (*send_notification)(struct lttng_event_notifier *event_notifier, |
443 | struct lttng_probe_ctx *lttng_probe_ctx, | |
0c023c01 MD |
444 | const char *interpreter_stack_data, |
445 | struct lttng_kernel_notifier_ctx *notif_ctx); | |
dffef45d FD |
446 | struct lttng_event_notifier_group *group; /* Weak ref */ |
447 | }; | |
448 | ||
3b861b22 FD |
449 | enum lttng_enabler_format_type { |
450 | LTTNG_ENABLER_FORMAT_STAR_GLOB, | |
451 | LTTNG_ENABLER_FORMAT_NAME, | |
3c997079 MD |
452 | }; |
453 | ||
454 | /* | |
455 | * Enabler field, within whatever object is enabling an event. Target of | |
456 | * backward reference. | |
457 | */ | |
458 | struct lttng_enabler { | |
459 | enum lttng_event_type evtype; /* First field. */ | |
460 | ||
3b861b22 | 461 | enum lttng_enabler_format_type format_type; |
3c997079 | 462 | |
608ab495 | 463 | /* head list of struct lttng_bytecode_node */ |
07dfc1d0 | 464 | struct list_head filter_bytecode_head; |
3c997079 MD |
465 | |
466 | struct lttng_kernel_event event_param; | |
b2bc0bc8 | 467 | unsigned int enabled:1; |
dffef45d FD |
468 | |
469 | uint64_t user_token; /* User-provided token. */ | |
b2bc0bc8 FD |
470 | }; |
471 | ||
472 | struct lttng_event_enabler { | |
473 | struct lttng_enabler base; | |
474 | struct list_head node; /* per-session list of enablers */ | |
0c023c01 MD |
475 | struct lttng_event_container *container; |
476 | struct lttng_counter_key key; | |
2954b37c FD |
477 | /* |
478 | * Unused, but kept around to make it explicit that the tracer can do | |
479 | * it. | |
480 | */ | |
3c997079 | 481 | struct lttng_ctx *ctx; |
85a9ca7f MD |
482 | }; |
483 | ||
dffef45d FD |
484 | struct lttng_event_notifier_enabler { |
485 | struct lttng_enabler base; | |
99f52fcc | 486 | uint64_t error_counter_index; |
dffef45d FD |
487 | struct list_head node; /* List of event_notifier enablers */ |
488 | struct lttng_event_notifier_group *group; | |
99d223ad FD |
489 | |
490 | /* head list of struct lttng_bytecode_node */ | |
491 | struct list_head capture_bytecode_head; | |
492 | uint64_t num_captures; | |
dffef45d FD |
493 | }; |
494 | ||
99d223ad | 495 | |
b2bc0bc8 FD |
496 | static inline |
497 | struct lttng_enabler *lttng_event_enabler_as_enabler( | |
498 | struct lttng_event_enabler *event_enabler) | |
499 | { | |
500 | return &event_enabler->base; | |
501 | } | |
502 | ||
dffef45d FD |
503 | static inline |
504 | struct lttng_enabler *lttng_event_notifier_enabler_as_enabler( | |
505 | struct lttng_event_notifier_enabler *event_notifier_enabler) | |
506 | { | |
507 | return &event_notifier_enabler->base; | |
508 | } | |
b2bc0bc8 | 509 | |
a90917c3 | 510 | struct lttng_channel_ops { |
85a9ca7f | 511 | struct channel *(*channel_create)(const char *name, |
5cf4b87c | 512 | void *priv, |
85a9ca7f MD |
513 | void *buf_addr, |
514 | size_t subbuf_size, size_t num_subbuf, | |
515 | unsigned int switch_timer_interval, | |
516 | unsigned int read_timer_interval); | |
517 | void (*channel_destroy)(struct channel *chan); | |
518 | struct lib_ring_buffer *(*buffer_read_open)(struct channel *chan); | |
f71ecafa | 519 | int (*buffer_has_read_closed_stream)(struct channel *chan); |
85a9ca7f | 520 | void (*buffer_read_close)(struct lib_ring_buffer *buf); |
4e1f08f4 | 521 | int (*event_reserve)(struct lib_ring_buffer_ctx *ctx, |
64c796d8 | 522 | uint32_t event_id); |
85a9ca7f MD |
523 | void (*event_commit)(struct lib_ring_buffer_ctx *ctx); |
524 | void (*event_write)(struct lib_ring_buffer_ctx *ctx, const void *src, | |
525 | size_t len); | |
4ea00e4f JD |
526 | void (*event_write_from_user)(struct lib_ring_buffer_ctx *ctx, |
527 | const void *src, size_t len); | |
58aa5d24 MD |
528 | void (*event_memset)(struct lib_ring_buffer_ctx *ctx, |
529 | int c, size_t len); | |
16f78f3a MD |
530 | void (*event_strcpy)(struct lib_ring_buffer_ctx *ctx, const char *src, |
531 | size_t len); | |
532 | void (*event_strcpy_from_user)(struct lib_ring_buffer_ctx *ctx, | |
533 | const char __user *src, size_t len); | |
1ec3f75a MD |
534 | /* |
535 | * packet_avail_size returns the available size in the current | |
536 | * packet. Note that the size returned is only a hint, since it | |
537 | * may change due to concurrent writes. | |
538 | */ | |
539 | size_t (*packet_avail_size)(struct channel *chan); | |
71c1d843 | 540 | wait_queue_head_t *(*get_writer_buf_wait_queue)(struct channel *chan, int cpu); |
24cedcfe MD |
541 | wait_queue_head_t *(*get_hp_wait_queue)(struct channel *chan); |
542 | int (*is_finalized)(struct channel *chan); | |
254ec7bc | 543 | int (*is_disabled)(struct channel *chan); |
3b731ab1 JD |
544 | int (*timestamp_begin) (const struct lib_ring_buffer_config *config, |
545 | struct lib_ring_buffer *bufb, | |
546 | uint64_t *timestamp_begin); | |
547 | int (*timestamp_end) (const struct lib_ring_buffer_config *config, | |
548 | struct lib_ring_buffer *bufb, | |
549 | uint64_t *timestamp_end); | |
550 | int (*events_discarded) (const struct lib_ring_buffer_config *config, | |
551 | struct lib_ring_buffer *bufb, | |
552 | uint64_t *events_discarded); | |
553 | int (*content_size) (const struct lib_ring_buffer_config *config, | |
554 | struct lib_ring_buffer *bufb, | |
555 | uint64_t *content_size); | |
556 | int (*packet_size) (const struct lib_ring_buffer_config *config, | |
557 | struct lib_ring_buffer *bufb, | |
558 | uint64_t *packet_size); | |
559 | int (*stream_id) (const struct lib_ring_buffer_config *config, | |
560 | struct lib_ring_buffer *bufb, | |
561 | uint64_t *stream_id); | |
2348ca17 JD |
562 | int (*current_timestamp) (const struct lib_ring_buffer_config *config, |
563 | struct lib_ring_buffer *bufb, | |
564 | uint64_t *ts); | |
5b3cf4f9 JD |
565 | int (*sequence_number) (const struct lib_ring_buffer_config *config, |
566 | struct lib_ring_buffer *bufb, | |
567 | uint64_t *seq); | |
5594698f JD |
568 | int (*instance_id) (const struct lib_ring_buffer_config *config, |
569 | struct lib_ring_buffer *bufb, | |
570 | uint64_t *id); | |
85a9ca7f MD |
571 | }; |
572 | ||
a101fa10 MD |
573 | struct lttng_counter_ops { |
574 | struct lib_counter *(*counter_create)(size_t nr_dimensions, | |
575 | const size_t *max_nr_elem, /* for each dimension */ | |
576 | int64_t global_sum_step); | |
577 | void (*counter_destroy)(struct lib_counter *counter); | |
578 | int (*counter_add)(struct lib_counter *counter, const size_t *dimension_indexes, | |
579 | int64_t v); | |
580 | /* | |
581 | * counter_read reads a specific cpu's counter if @cpu >= 0, or | |
582 | * the global aggregation counter if @cpu == -1. | |
583 | */ | |
584 | int (*counter_read)(struct lib_counter *counter, const size_t *dimension_indexes, int cpu, | |
585 | int64_t *value, bool *overflow, bool *underflow); | |
586 | /* | |
587 | * counter_aggregate returns the total sum of all per-cpu counters and | |
588 | * the global aggregation counter. | |
589 | */ | |
590 | int (*counter_aggregate)(struct lib_counter *counter, const size_t *dimension_indexes, | |
591 | int64_t *value, bool *overflow, bool *underflow); | |
592 | int (*counter_clear)(struct lib_counter *counter, const size_t *dimension_indexes); | |
593 | }; | |
594 | ||
a90917c3 | 595 | struct lttng_transport { |
a33c9927 MD |
596 | char *name; |
597 | struct module *owner; | |
598 | struct list_head node; | |
a90917c3 | 599 | struct lttng_channel_ops ops; |
a33c9927 MD |
600 | }; |
601 | ||
a101fa10 MD |
602 | struct lttng_counter_transport { |
603 | char *name; | |
604 | struct module *owner; | |
605 | struct list_head node; | |
606 | struct lttng_counter_ops ops; | |
607 | }; | |
608 | ||
80f87dd2 MD |
609 | struct lttng_syscall_filter; |
610 | ||
3c997079 MD |
611 | #define LTTNG_EVENT_HT_BITS 12 |
612 | #define LTTNG_EVENT_HT_SIZE (1U << LTTNG_EVENT_HT_BITS) | |
613 | ||
614 | struct lttng_event_ht { | |
615 | struct hlist_head table[LTTNG_EVENT_HT_SIZE]; | |
616 | }; | |
617 | ||
dffef45d FD |
618 | #define LTTNG_EVENT_NOTIFIER_HT_BITS 12 |
619 | #define LTTNG_EVENT_NOTIFIER_HT_SIZE (1U << LTTNG_EVENT_NOTIFIER_HT_BITS) | |
620 | ||
621 | struct lttng_event_notifier_ht { | |
622 | struct hlist_head table[LTTNG_EVENT_NOTIFIER_HT_SIZE]; | |
623 | }; | |
624 | ||
0c023c01 MD |
625 | enum lttng_event_container_type { |
626 | LTTNG_EVENT_CONTAINER_CHANNEL, | |
627 | LTTNG_EVENT_CONTAINER_COUNTER, | |
628 | }; | |
629 | ||
630 | /* | |
631 | * An event can be contained within either a channel or a counter. | |
632 | */ | |
633 | struct lttng_event_container { | |
634 | enum lttng_event_container_type type; | |
635 | ||
636 | struct file *file; /* File associated to event container */ | |
637 | struct lttng_session *session; /* Session containing the container */ | |
e64957da | 638 | int enabled; |
0c023c01 | 639 | struct hlist_head *sc_table; /* for syscall tracing */ |
3b82c4e1 MD |
640 | struct hlist_head *compat_sc_table; |
641 | struct hlist_head *sc_exit_table; /* for syscall exit tracing */ | |
642 | struct hlist_head *compat_sc_exit_table; | |
0c023c01 MD |
643 | |
644 | /* | |
645 | * Combining all unknown syscall events works as long as they | |
646 | * are only matched by "all" syscalls enablers, but will require | |
647 | * a design change when we allow matching by syscall number, for | |
648 | * instance by allocating sc_tables accomodating NR_syscalls | |
649 | * entries. | |
650 | */ | |
651 | struct hlist_head sc_unknown; /* for unknown syscalls */ | |
3b82c4e1 MD |
652 | struct hlist_head sc_compat_unknown; |
653 | struct hlist_head sc_exit_unknown; | |
654 | struct hlist_head compat_sc_exit_unknown; | |
0c023c01 | 655 | |
80f87dd2 | 656 | struct lttng_syscall_filter *sc_filter; |
3b82c4e1 MD |
657 | int syscall_all_entry; |
658 | int syscall_all_exit; | |
0c023c01 | 659 | unsigned int sys_enter_registered:1, |
80f87dd2 | 660 | sys_exit_registered:1, |
0c023c01 MD |
661 | tstate:1; /* Transient enable state */ |
662 | bool coalesce_hits; | |
663 | }; | |
664 | ||
665 | struct lttng_channel { | |
666 | unsigned int id; | |
667 | struct channel *chan; /* Channel buffers */ | |
668 | struct lttng_ctx *ctx; | |
669 | /* Event ID management */ | |
670 | unsigned int free_event_id; /* Next event ID to allocate */ | |
671 | struct list_head list; /* Channel list */ | |
672 | struct lttng_channel_ops *ops; | |
673 | struct lttng_transport *transport; | |
674 | int header_type; /* 0: unset, 1: compact, 2: large */ | |
675 | enum channel_type channel_type; | |
676 | unsigned int metadata_dumped:1; | |
677 | ||
678 | struct lttng_event_container parent; | |
85a9ca7f MD |
679 | }; |
680 | ||
d83004aa JD |
681 | struct lttng_metadata_stream { |
682 | void *priv; /* Ring buffer private data */ | |
683 | struct lttng_metadata_cache *metadata_cache; | |
f613e3e6 MD |
684 | unsigned int metadata_in; /* Bytes read from the cache */ |
685 | unsigned int metadata_out; /* Bytes consumed from stream */ | |
d83004aa JD |
686 | int finalized; /* Has channel been finalized */ |
687 | wait_queue_head_t read_wait; /* Reader buffer-level wait queue */ | |
688 | struct list_head list; /* Stream list */ | |
b3b8072b | 689 | struct lttng_transport *transport; |
9616f0bf | 690 | uint64_t version; /* Current version of the metadata cache */ |
8b97fd42 | 691 | bool coherent; /* Stream in a coherent state */ |
d83004aa JD |
692 | }; |
693 | ||
114667d5 MD |
694 | #define LTTNG_DYNAMIC_LEN_STACK_SIZE 128 |
695 | ||
696 | struct lttng_dynamic_len_stack { | |
697 | size_t stack[LTTNG_DYNAMIC_LEN_STACK_SIZE]; | |
698 | size_t offset; | |
699 | }; | |
700 | ||
701 | DECLARE_PER_CPU(struct lttng_dynamic_len_stack, lttng_dynamic_len_stack); | |
e0130fab MD |
702 | |
703 | /* | |
d1f652f8 | 704 | * struct lttng_id_tracker declared in header due to deferencing of *v |
e0130fab MD |
705 | * in RCU_INITIALIZER(v). |
706 | */ | |
d1f652f8 MD |
707 | #define LTTNG_ID_HASH_BITS 6 |
708 | #define LTTNG_ID_TABLE_SIZE (1 << LTTNG_ID_HASH_BITS) | |
e0130fab | 709 | |
d1f652f8 MD |
710 | enum tracker_type { |
711 | TRACKER_PID, | |
712 | TRACKER_VPID, | |
713 | TRACKER_UID, | |
714 | TRACKER_VUID, | |
715 | TRACKER_GID, | |
716 | TRACKER_VGID, | |
717 | ||
718 | TRACKER_UNKNOWN, | |
719 | }; | |
720 | ||
721 | struct lttng_id_tracker_rcu { | |
722 | struct hlist_head id_hash[LTTNG_ID_TABLE_SIZE]; | |
723 | }; | |
724 | ||
725 | struct lttng_id_tracker { | |
726 | struct lttng_session *session; | |
727 | enum tracker_type tracker_type; | |
728 | struct lttng_id_tracker_rcu *p; /* RCU dereferenced. */ | |
e0130fab MD |
729 | }; |
730 | ||
d1f652f8 | 731 | struct lttng_id_hash_node { |
7e6f9ef6 | 732 | struct hlist_node hlist; |
d1f652f8 | 733 | int id; |
7e6f9ef6 MD |
734 | }; |
735 | ||
a90917c3 | 736 | struct lttng_session { |
85a9ca7f | 737 | int active; /* Is trace session active ? */ |
8070f5c0 | 738 | int been_active; /* Has trace session been active ? */ |
85a9ca7f MD |
739 | struct file *file; /* File associated to session */ |
740 | struct list_head chan; /* Channel list head */ | |
741 | struct list_head events; /* Event list head */ | |
0c023c01 | 742 | struct list_head counters; /* Counters list head */ |
85a9ca7f | 743 | struct list_head list; /* Session list */ |
c099397a | 744 | unsigned int free_chan_id; /* Next chan ID to allocate */ |
d793d5e1 | 745 | uuid_le uuid; /* Trace session unique ID */ |
d83004aa | 746 | struct lttng_metadata_cache *metadata_cache; |
d1f652f8 MD |
747 | struct lttng_id_tracker pid_tracker; |
748 | struct lttng_id_tracker vpid_tracker; | |
749 | struct lttng_id_tracker uid_tracker; | |
750 | struct lttng_id_tracker vuid_tracker; | |
751 | struct lttng_id_tracker gid_tracker; | |
752 | struct lttng_id_tracker vgid_tracker; | |
3c997079 MD |
753 | unsigned int metadata_dumped:1, |
754 | tstate:1; /* Transient enable state */ | |
b2bc0bc8 | 755 | /* List of event enablers */ |
3c997079 | 756 | struct list_head enablers_head; |
0c023c01 MD |
757 | /* Hash table of events indexed by event name */ |
758 | struct lttng_event_ht events_name_ht; | |
759 | /* Hash table of events indexed by key */ | |
760 | struct lttng_event_ht events_key_ht; | |
7f859fbf | 761 | char name[LTTNG_KERNEL_SESSION_NAME_LEN]; |
1c88f269 | 762 | char creation_time[LTTNG_KERNEL_SESSION_CREATION_TIME_ISO8601_LEN]; |
85a9ca7f MD |
763 | }; |
764 | ||
0c023c01 MD |
765 | struct lttng_counter_map_descriptor { |
766 | uint64_t user_token; | |
767 | size_t array_index; | |
768 | char key[LTTNG_KERNEL_COUNTER_KEY_LEN]; | |
769 | }; | |
770 | ||
771 | struct lttng_counter_map { | |
772 | struct lttng_counter_map_descriptor *descriptors; | |
773 | size_t nr_descriptors; | |
774 | size_t alloc_len; | |
775 | struct mutex lock; /* counter map lock */ | |
776 | }; | |
777 | ||
99f52fcc | 778 | struct lttng_counter { |
99f52fcc FD |
779 | struct file *owner; |
780 | struct lttng_counter_transport *transport; | |
781 | struct lib_counter *counter; | |
782 | struct lttng_counter_ops *ops; | |
0c023c01 MD |
783 | struct list_head node; /* Counter list (in session) */ |
784 | ||
785 | size_t free_index; /* Next index to allocate */ | |
786 | struct lttng_counter_map map; | |
787 | ||
788 | struct lttng_event_container parent; | |
99f52fcc FD |
789 | }; |
790 | ||
750b05f2 FD |
791 | struct lttng_event_notifier_group { |
792 | struct file *file; /* File associated to event notifier group */ | |
21f58fb7 | 793 | struct file *notif_file; /* File used to expose notifications to userspace. */ |
750b05f2 | 794 | struct list_head node; /* event notifier group list */ |
dffef45d FD |
795 | struct list_head enablers_head; /* List of enablers */ |
796 | struct list_head event_notifiers_head; /* List of event notifier */ | |
797 | struct lttng_event_notifier_ht event_notifiers_ht; /* Hash table of event notifiers */ | |
750b05f2 FD |
798 | struct lttng_ctx *ctx; /* Contexts for filters. */ |
799 | struct lttng_channel_ops *ops; | |
800 | struct lttng_transport *transport; | |
801 | struct channel *chan; /* Ring buffer channel for event notifier group. */ | |
802 | struct lib_ring_buffer *buf; /* Ring buffer for event notifier group. */ | |
21f58fb7 FD |
803 | wait_queue_head_t read_wait; |
804 | struct irq_work wakeup_pending; /* Pending wakeup irq work. */ | |
8a8ac9a8 FD |
805 | struct lttng_event_notifier *sc_unknown; /* for unknown syscalls */ |
806 | struct lttng_event_notifier *sc_compat_unknown; | |
807 | ||
808 | struct lttng_syscall_filter *sc_filter; | |
809 | ||
810 | struct hlist_head *event_notifier_syscall_dispatch; | |
811 | struct hlist_head *event_notifier_compat_syscall_dispatch; | |
812 | struct hlist_head *event_notifier_exit_syscall_dispatch; | |
813 | struct hlist_head *event_notifier_exit_compat_syscall_dispatch; | |
814 | ||
815 | struct hlist_head event_notifier_unknown_syscall_dispatch; | |
816 | struct hlist_head event_notifier_compat_unknown_syscall_dispatch; | |
817 | struct hlist_head event_notifier_exit_unknown_syscall_dispatch; | |
818 | struct hlist_head event_notifier_exit_compat_unknown_syscall_dispatch; | |
819 | ||
820 | int syscall_all_entry; | |
821 | int syscall_all_exit; | |
822 | ||
823 | unsigned int sys_enter_registered:1, sys_exit_registered:1; | |
824 | ||
825 | struct lttng_counter *error_counter; | |
826 | size_t error_counter_len; | |
750b05f2 FD |
827 | }; |
828 | ||
d83004aa JD |
829 | struct lttng_metadata_cache { |
830 | char *data; /* Metadata cache */ | |
831 | unsigned int cache_alloc; /* Metadata allocated size (bytes) */ | |
832 | unsigned int metadata_written; /* Number of bytes written in metadata cache */ | |
3e75e2a7 | 833 | atomic_t producing; /* Metadata being produced (incomplete) */ |
d83004aa JD |
834 | struct kref refcount; /* Metadata cache usage */ |
835 | struct list_head metadata_stream; /* Metadata stream list */ | |
a36580d5 | 836 | uuid_le uuid; /* Trace session unique ID (copy) */ |
9616f0bf JD |
837 | struct mutex lock; /* Produce/consume lock */ |
838 | uint64_t version; /* Current version of the metadata */ | |
d83004aa JD |
839 | }; |
840 | ||
0c023c01 MD |
841 | static inline |
842 | struct lttng_event_container *lttng_channel_get_event_container(struct lttng_channel *channel) | |
843 | { | |
844 | return &channel->parent; | |
845 | } | |
846 | ||
847 | static inline | |
848 | struct lttng_event_container *lttng_counter_get_event_container(struct lttng_counter *counter) | |
849 | { | |
850 | return &counter->parent; | |
851 | } | |
852 | ||
853 | static inline | |
854 | struct lttng_channel *lttng_event_container_get_channel(struct lttng_event_container *container) | |
855 | { | |
856 | if (container->type != LTTNG_EVENT_CONTAINER_CHANNEL) | |
857 | return NULL; | |
858 | return container_of(container, struct lttng_channel, parent); | |
859 | } | |
860 | ||
861 | static inline | |
862 | struct lttng_counter *lttng_event_container_get_counter(struct lttng_event_container *container) | |
863 | { | |
864 | if (container->type != LTTNG_EVENT_CONTAINER_COUNTER) | |
865 | return NULL; | |
866 | return container_of(container, struct lttng_counter, parent); | |
867 | } | |
868 | ||
3c997079 MD |
869 | void lttng_lock_sessions(void); |
870 | void lttng_unlock_sessions(void); | |
871 | ||
872 | struct list_head *lttng_get_probe_list_head(void); | |
873 | ||
b2bc0bc8 FD |
874 | struct lttng_event_enabler *lttng_event_enabler_create( |
875 | enum lttng_enabler_format_type format_type, | |
3c997079 | 876 | struct lttng_kernel_event *event_param, |
0c023c01 MD |
877 | const struct lttng_counter_key *key, |
878 | struct lttng_event_container *container); | |
3c997079 | 879 | |
b2bc0bc8 FD |
880 | int lttng_event_enabler_enable(struct lttng_event_enabler *event_enabler); |
881 | int lttng_event_enabler_disable(struct lttng_event_enabler *event_enabler); | |
dffef45d FD |
882 | struct lttng_event_notifier_enabler *lttng_event_notifier_enabler_create( |
883 | struct lttng_event_notifier_group *event_notifier_group, | |
884 | enum lttng_enabler_format_type format_type, | |
885 | struct lttng_kernel_event_notifier *event_notifier_param); | |
886 | ||
887 | int lttng_event_notifier_enabler_enable( | |
888 | struct lttng_event_notifier_enabler *event_notifier_enabler); | |
889 | int lttng_event_notifier_enabler_disable( | |
890 | struct lttng_event_notifier_enabler *event_notifier_enabler); | |
3c997079 | 891 | int lttng_fix_pending_events(void); |
b01155ba | 892 | int lttng_fix_pending_event_notifiers(void); |
3c997079 | 893 | int lttng_session_active(void); |
b01155ba | 894 | bool lttng_event_notifier_active(void); |
3c997079 | 895 | |
a90917c3 MD |
896 | struct lttng_session *lttng_session_create(void); |
897 | int lttng_session_enable(struct lttng_session *session); | |
898 | int lttng_session_disable(struct lttng_session *session); | |
899 | void lttng_session_destroy(struct lttng_session *session); | |
9616f0bf | 900 | int lttng_session_metadata_regenerate(struct lttng_session *session); |
601252cf | 901 | int lttng_session_statedump(struct lttng_session *session); |
d83004aa | 902 | void metadata_cache_destroy(struct kref *kref); |
4e3c1b9b | 903 | |
99f52fcc FD |
904 | int lttng_kernel_counter_read(struct lttng_counter *counter, |
905 | const size_t *dimension_indexes, int32_t cpu, | |
906 | int64_t *val, bool *overflow, bool *underflow); | |
907 | int lttng_kernel_counter_aggregate(struct lttng_counter *counter, | |
908 | const size_t *dimension_indexes, int64_t *val, | |
909 | bool *overflow, bool *underflow); | |
910 | int lttng_kernel_counter_clear(struct lttng_counter *counter, | |
911 | const size_t *dimension_indexes); | |
912 | ||
913 | ||
750b05f2 | 914 | struct lttng_event_notifier_group *lttng_event_notifier_group_create(void); |
99f52fcc FD |
915 | int lttng_event_notifier_group_create_error_counter( |
916 | struct file *event_notifier_group_file, | |
917 | const struct lttng_kernel_counter_conf *error_counter_conf); | |
0c023c01 | 918 | |
750b05f2 FD |
919 | void lttng_event_notifier_group_destroy( |
920 | struct lttng_event_notifier_group *event_notifier_group); | |
0c023c01 MD |
921 | int lttng_event_notifier_group_set_error_counter( |
922 | struct lttng_event_notifier_group *event_notifier_group, | |
923 | const char *counter_transport_name, | |
924 | size_t counter_len); | |
750b05f2 | 925 | |
a90917c3 | 926 | struct lttng_channel *lttng_channel_create(struct lttng_session *session, |
5dbbdb43 MD |
927 | const char *transport_name, |
928 | void *buf_addr, | |
929 | size_t subbuf_size, size_t num_subbuf, | |
930 | unsigned int switch_timer_interval, | |
d83004aa JD |
931 | unsigned int read_timer_interval, |
932 | enum channel_type channel_type); | |
4e3c1b9b | 933 | |
d83004aa | 934 | void lttng_metadata_channel_destroy(struct lttng_channel *chan); |
0c023c01 | 935 | struct lttng_event *lttng_event_create(struct lttng_event_container *container, |
3c997079 | 936 | struct lttng_kernel_event *event_param, |
0c023c01 | 937 | const struct lttng_counter_key *key, |
3c997079 MD |
938 | void *filter, |
939 | const struct lttng_event_desc *event_desc, | |
0c023c01 MD |
940 | enum lttng_kernel_instrumentation itype, |
941 | uint64_t user_token); | |
942 | struct lttng_event *_lttng_event_create(struct lttng_event_container *container, | |
33a39a3c | 943 | struct lttng_kernel_event *event_param, |
0c023c01 | 944 | const struct lttng_counter_key *key, |
33a39a3c MD |
945 | void *filter, |
946 | const struct lttng_event_desc *event_desc, | |
0c023c01 MD |
947 | enum lttng_kernel_instrumentation itype, |
948 | uint64_t user_token); | |
949 | struct lttng_counter *lttng_session_create_counter( | |
950 | struct lttng_session *session, | |
951 | const char *counter_transport_name, | |
952 | size_t number_dimensions, const size_t *dimensions_sizes, | |
953 | bool coalesce_hits); | |
c0e31d2e | 954 | |
dffef45d FD |
955 | struct lttng_event_notifier *lttng_event_notifier_create( |
956 | const struct lttng_event_desc *event_notifier_desc, | |
957 | uint64_t id, | |
99f52fcc | 958 | uint64_t error_counter_idx, |
dffef45d FD |
959 | struct lttng_event_notifier_group *event_notifier_group, |
960 | struct lttng_kernel_event_notifier *event_notifier_param, | |
961 | void *filter, | |
962 | enum lttng_kernel_instrumentation itype); | |
963 | struct lttng_event_notifier *_lttng_event_notifier_create( | |
964 | const struct lttng_event_desc *event_notifier_desc, | |
965 | uint64_t id, | |
99f52fcc | 966 | uint64_t error_counter_idx, |
dffef45d FD |
967 | struct lttng_event_notifier_group *event_notifier_group, |
968 | struct lttng_kernel_event_notifier *event_notifier_param, | |
969 | void *filter, | |
970 | enum lttng_kernel_instrumentation itype); | |
971 | ||
0c023c01 MD |
972 | int lttng_event_container_enable(struct lttng_event_container *container); |
973 | int lttng_event_container_disable(struct lttng_event_container *container); | |
a90917c3 MD |
974 | int lttng_event_enable(struct lttng_event *event); |
975 | int lttng_event_disable(struct lttng_event *event); | |
e64957da | 976 | |
2b16f0c9 FD |
977 | int lttng_event_notifier_enable(struct lttng_event_notifier *event_notifier); |
978 | int lttng_event_notifier_disable(struct lttng_event_notifier *event_notifier); | |
979 | ||
a90917c3 MD |
980 | void lttng_transport_register(struct lttng_transport *transport); |
981 | void lttng_transport_unregister(struct lttng_transport *transport); | |
11b5a3c2 | 982 | |
a101fa10 MD |
983 | void lttng_counter_transport_register(struct lttng_counter_transport *transport); |
984 | void lttng_counter_transport_unregister(struct lttng_counter_transport *transport); | |
985 | ||
360f38ea | 986 | void synchronize_trace(void); |
80996790 | 987 | int lttng_abi_init(void); |
6dccd6c1 | 988 | int lttng_abi_compat_old_init(void); |
80996790 | 989 | void lttng_abi_exit(void); |
6dccd6c1 | 990 | void lttng_abi_compat_old_exit(void); |
1c25284c | 991 | |
a90917c3 MD |
992 | int lttng_probe_register(struct lttng_probe_desc *desc); |
993 | void lttng_probe_unregister(struct lttng_probe_desc *desc); | |
0bcedee9 FD |
994 | const struct lttng_event_desc *lttng_event_desc_get(const char *name); |
995 | void lttng_event_desc_put(const struct lttng_event_desc *desc); | |
a90917c3 MD |
996 | int lttng_probes_init(void); |
997 | void lttng_probes_exit(void); | |
1ec65de1 | 998 | |
b3b8072b | 999 | int lttng_metadata_output_channel(struct lttng_metadata_stream *stream, |
8b97fd42 | 1000 | struct channel *chan, bool *coherent); |
d83004aa | 1001 | |
d1f652f8 MD |
1002 | int lttng_id_tracker_get_node_id(const struct lttng_id_hash_node *node); |
1003 | int lttng_id_tracker_empty_set(struct lttng_id_tracker *lf); | |
1004 | void lttng_id_tracker_destroy(struct lttng_id_tracker *lf, bool rcu); | |
1005 | bool lttng_id_tracker_lookup(struct lttng_id_tracker_rcu *p, int id); | |
1006 | int lttng_id_tracker_add(struct lttng_id_tracker *lf, int id); | |
1007 | int lttng_id_tracker_del(struct lttng_id_tracker *lf, int id); | |
e0130fab | 1008 | |
d1f652f8 MD |
1009 | int lttng_session_track_id(struct lttng_session *session, |
1010 | enum tracker_type tracker_type, int id); | |
1011 | int lttng_session_untrack_id(struct lttng_session *session, | |
1012 | enum tracker_type tracker_type, int id); | |
e0130fab | 1013 | |
d1f652f8 MD |
1014 | int lttng_session_list_tracker_ids(struct lttng_session *session, |
1015 | enum tracker_type tracker_type); | |
7e6f9ef6 | 1016 | |
2754583e MD |
1017 | void lttng_clock_ref(void); |
1018 | void lttng_clock_unref(void); | |
1019 | ||
8a8ac9a8 FD |
1020 | int lttng_desc_match_enabler(const struct lttng_event_desc *desc, |
1021 | struct lttng_enabler *enabler); | |
1022 | ||
3a523f5b | 1023 | #if defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS) |
3b82c4e1 | 1024 | int lttng_syscalls_register_event(struct lttng_event_enabler *event_enabler, void *filter); |
0c023c01 MD |
1025 | int lttng_syscalls_unregister_event_container(struct lttng_event_container *event_container); |
1026 | int lttng_syscalls_destroy_event_container(struct lttng_event_container *container); | |
1027 | int lttng_syscall_filter_enable_event(struct lttng_event_container *container, | |
badfe9f5 | 1028 | struct lttng_event *event); |
0c023c01 | 1029 | int lttng_syscall_filter_disable_event(struct lttng_event_container *container, |
badfe9f5 | 1030 | struct lttng_event *event); |
0c023c01 | 1031 | long lttng_event_container_syscall_mask(struct lttng_event_container *container, |
12e579db | 1032 | struct lttng_kernel_syscall_mask __user *usyscall_mask); |
2d6d88c6 | 1033 | |
8a8ac9a8 FD |
1034 | int lttng_syscalls_register_event_notifier( |
1035 | struct lttng_event_notifier_enabler *event_notifier_enabler, | |
1036 | void *filter); | |
1037 | int lttng_syscals_create_matching_event_notifiers( | |
1038 | struct lttng_event_notifier_enabler *event_notifier_enabler, void *filter); | |
3b82c4e1 | 1039 | int lttng_syscalls_unregister_event_notifier_group(struct lttng_event_notifier_group *group); |
8a8ac9a8 FD |
1040 | int lttng_syscall_filter_enable_event_notifier(struct lttng_event_notifier *event_notifier); |
1041 | int lttng_syscall_filter_disable_event_notifier(struct lttng_event_notifier *event_notifier); | |
1ec65de1 | 1042 | #else |
2d6d88c6 | 1043 | static inline int lttng_syscalls_register_event( |
3b82c4e1 | 1044 | struct lttng_event_enabler *event_enabler, void *filter) |
1ec65de1 MD |
1045 | { |
1046 | return -ENOSYS; | |
1047 | } | |
1048 | ||
0c023c01 | 1049 | static inline int lttng_syscalls_unregister_event_container(struct lttng_event_container *event_container) |
1ec65de1 MD |
1050 | { |
1051 | return 0; | |
1052 | } | |
80f87dd2 | 1053 | |
0c023c01 | 1054 | static inline int lttng_syscalls_destroy_event_container(struct lttng_event_container *event_container) |
badfe9f5 MD |
1055 | { |
1056 | return 0; | |
1057 | } | |
1058 | ||
0c023c01 | 1059 | static inline int lttng_syscall_filter_enable_event(struct lttng_event_container *event_container, |
badfe9f5 | 1060 | struct lttng_event *event); |
80f87dd2 MD |
1061 | { |
1062 | return -ENOSYS; | |
1063 | } | |
1064 | ||
0c023c01 | 1065 | static inline int lttng_syscall_filter_disable_event(struct lttng_event_container *event_container, |
badfe9f5 | 1066 | struct lttng_event *event); |
80f87dd2 MD |
1067 | { |
1068 | return -ENOSYS; | |
1069 | } | |
12e579db | 1070 | |
0c023c01 | 1071 | static inline long lttng_channel_syscall_mask(struct lttng_event_container *event_container, |
12e579db MD |
1072 | struct lttng_kernel_syscall_mask __user *usyscall_mask) |
1073 | { | |
1074 | return -ENOSYS; | |
1075 | } | |
dffef45d | 1076 | |
8a8ac9a8 FD |
1077 | static inline int lttng_syscalls_register_event_notifier( |
1078 | struct lttng_event_notifier_group *group, void *filter) | |
1079 | { | |
1080 | return -ENOSYS; | |
1081 | } | |
1082 | ||
3b82c4e1 | 1083 | static inline int lttng_syscalls_unregister_event_notifier_group( |
8a8ac9a8 FD |
1084 | struct lttng_event_notifier_group *group) |
1085 | { | |
1086 | return 0; | |
1087 | } | |
1088 | ||
1089 | static inline int lttng_syscall_filter_enable_event_notifier( | |
1090 | struct lttng_event_notifier_group *group, | |
1091 | const char *name) | |
1092 | { | |
1093 | return -ENOSYS; | |
1094 | } | |
1095 | ||
1096 | static inline int lttng_syscall_filter_disable_event_notifier( | |
1097 | struct lttng_event_notifier_group *group, | |
1098 | const char *name) | |
1099 | { | |
1100 | return -ENOSYS; | |
1101 | } | |
1102 | ||
1ec65de1 MD |
1103 | #endif |
1104 | ||
183e8b3a | 1105 | int lttng_event_enabler_attach_filter_bytecode(struct lttng_event_enabler *event_enabler, |
07dfc1d0 | 1106 | struct lttng_kernel_filter_bytecode __user *bytecode); |
183e8b3a | 1107 | int lttng_event_notifier_enabler_attach_filter_bytecode( |
dffef45d FD |
1108 | struct lttng_event_notifier_enabler *event_notifier_enabler, |
1109 | struct lttng_kernel_filter_bytecode __user *bytecode); | |
99d223ad FD |
1110 | int lttng_event_notifier_enabler_attach_capture_bytecode( |
1111 | struct lttng_event_notifier_enabler *event_notifier_enabler, | |
1112 | struct lttng_kernel_capture_bytecode __user *bytecode); | |
2dfda770 FD |
1113 | |
1114 | void lttng_enabler_link_bytecode(const struct lttng_event_desc *event_desc, | |
1115 | struct lttng_ctx *ctx, | |
60206944 FD |
1116 | struct list_head *instance_bytecode_runtime_head, |
1117 | struct list_head *enabler_bytecode_runtime_head); | |
966ad253 | 1118 | void lttng_free_event_filter_runtime(struct lttng_event *event); |
3ef5cc03 | 1119 | void lttng_free_event_notifier_filter_runtime(struct lttng_event_notifier *event_notifier); |
07dfc1d0 | 1120 | |
114667d5 MD |
1121 | int lttng_probes_init(void); |
1122 | ||
07dfc1d0 MD |
1123 | extern struct lttng_ctx *lttng_static_ctx; |
1124 | ||
1125 | int lttng_context_init(void); | |
1126 | void lttng_context_exit(void); | |
2dccf128 | 1127 | struct lttng_ctx_field *lttng_append_context(struct lttng_ctx **ctx); |
c02eb859 MD |
1128 | ssize_t lttng_append_context_index(struct lttng_ctx **ctx_p); |
1129 | struct lttng_ctx_field *lttng_get_context_field_from_index(struct lttng_ctx *ctx, | |
1130 | size_t index); | |
a9dd15da | 1131 | void lttng_context_update(struct lttng_ctx *ctx); |
44252f0f | 1132 | int lttng_find_context(struct lttng_ctx *ctx, const char *name); |
07dfc1d0 | 1133 | int lttng_get_context_index(struct lttng_ctx *ctx, const char *name); |
8289661d MD |
1134 | void lttng_remove_context_field(struct lttng_ctx **ctx, |
1135 | struct lttng_ctx_field *field); | |
c02eb859 | 1136 | void lttng_remove_context_field_index(struct lttng_ctx **ctx_p, size_t index); |
2dccf128 | 1137 | void lttng_destroy_context(struct lttng_ctx *ctx); |
8070f5c0 | 1138 | int lttng_add_pid_to_ctx(struct lttng_ctx **ctx); |
b3699d90 | 1139 | int lttng_add_cpu_id_to_ctx(struct lttng_ctx **ctx); |
a2563e83 | 1140 | int lttng_add_procname_to_ctx(struct lttng_ctx **ctx); |
a8ad3613 | 1141 | int lttng_add_prio_to_ctx(struct lttng_ctx **ctx); |
53f1f0ca | 1142 | int lttng_add_nice_to_ctx(struct lttng_ctx **ctx); |
b64bc438 MD |
1143 | int lttng_add_vpid_to_ctx(struct lttng_ctx **ctx); |
1144 | int lttng_add_tid_to_ctx(struct lttng_ctx **ctx); | |
1145 | int lttng_add_vtid_to_ctx(struct lttng_ctx **ctx); | |
1146 | int lttng_add_ppid_to_ctx(struct lttng_ctx **ctx); | |
1147 | int lttng_add_vppid_to_ctx(struct lttng_ctx **ctx); | |
975da2c0 | 1148 | int lttng_add_hostname_to_ctx(struct lttng_ctx **ctx); |
79150a49 JD |
1149 | int lttng_add_interruptible_to_ctx(struct lttng_ctx **ctx); |
1150 | int lttng_add_need_reschedule_to_ctx(struct lttng_ctx **ctx); | |
1151 | #if defined(CONFIG_PREEMPT_RT_FULL) || defined(CONFIG_PREEMPT) | |
1152 | int lttng_add_preemptible_to_ctx(struct lttng_ctx **ctx); | |
1153 | #else | |
1154 | static inline | |
1155 | int lttng_add_preemptible_to_ctx(struct lttng_ctx **ctx) | |
1156 | { | |
1157 | return -ENOSYS; | |
1158 | } | |
1159 | #endif | |
1160 | #ifdef CONFIG_PREEMPT_RT_FULL | |
1161 | int lttng_add_migratable_to_ctx(struct lttng_ctx **ctx); | |
1162 | #else | |
1163 | static inline | |
1164 | int lttng_add_migratable_to_ctx(struct lttng_ctx **ctx) | |
1165 | { | |
1166 | return -ENOSYS; | |
1167 | } | |
1168 | #endif | |
2fa2d39a FG |
1169 | |
1170 | int lttng_add_callstack_to_ctx(struct lttng_ctx **ctx, int type); | |
1171 | ||
a6cf40a4 | 1172 | #if defined(CONFIG_CGROUPS) && \ |
5f4c791e | 1173 | ((LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,6,0)) || \ |
a6cf40a4 MJ |
1174 | LTTNG_UBUNTU_KERNEL_RANGE(4,4,0,0, 4,5,0,0)) |
1175 | int lttng_add_cgroup_ns_to_ctx(struct lttng_ctx **ctx); | |
1176 | #else | |
1177 | static inline | |
1178 | int lttng_add_cgroup_ns_to_ctx(struct lttng_ctx **ctx) | |
1179 | { | |
1180 | return -ENOSYS; | |
1181 | } | |
1182 | #endif | |
1183 | ||
1184 | #if defined(CONFIG_IPC_NS) && \ | |
5f4c791e | 1185 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) |
a6cf40a4 MJ |
1186 | int lttng_add_ipc_ns_to_ctx(struct lttng_ctx **ctx); |
1187 | #else | |
1188 | static inline | |
1189 | int lttng_add_ipc_ns_to_ctx(struct lttng_ctx **ctx) | |
1190 | { | |
1191 | return -ENOSYS; | |
1192 | } | |
1193 | #endif | |
1194 | ||
1195 | #if !defined(LTTNG_MNT_NS_MISSING_HEADER) && \ | |
5f4c791e | 1196 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) |
a6cf40a4 MJ |
1197 | int lttng_add_mnt_ns_to_ctx(struct lttng_ctx **ctx); |
1198 | #else | |
1199 | static inline | |
1200 | int lttng_add_mnt_ns_to_ctx(struct lttng_ctx **ctx) | |
1201 | { | |
1202 | return -ENOSYS; | |
1203 | } | |
1204 | #endif | |
1205 | ||
1206 | #if defined(CONFIG_NET_NS) && \ | |
5f4c791e | 1207 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) |
a6cf40a4 MJ |
1208 | int lttng_add_net_ns_to_ctx(struct lttng_ctx **ctx); |
1209 | #else | |
1210 | static inline | |
1211 | int lttng_add_net_ns_to_ctx(struct lttng_ctx **ctx) | |
1212 | { | |
1213 | return -ENOSYS; | |
1214 | } | |
1215 | #endif | |
1216 | ||
1217 | #if defined(CONFIG_PID_NS) && \ | |
5f4c791e | 1218 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) |
a6cf40a4 MJ |
1219 | int lttng_add_pid_ns_to_ctx(struct lttng_ctx **ctx); |
1220 | #else | |
1221 | static inline | |
1222 | int lttng_add_pid_ns_to_ctx(struct lttng_ctx **ctx) | |
1223 | { | |
1224 | return -ENOSYS; | |
1225 | } | |
1226 | #endif | |
1227 | ||
1228 | #if defined(CONFIG_USER_NS) && \ | |
5f4c791e | 1229 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) |
a6cf40a4 MJ |
1230 | int lttng_add_user_ns_to_ctx(struct lttng_ctx **ctx); |
1231 | #else | |
1232 | static inline | |
1233 | int lttng_add_user_ns_to_ctx(struct lttng_ctx **ctx) | |
1234 | { | |
1235 | return -ENOSYS; | |
1236 | } | |
1237 | #endif | |
1238 | ||
1239 | #if defined(CONFIG_UTS_NS) && \ | |
5f4c791e | 1240 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) |
a6cf40a4 MJ |
1241 | int lttng_add_uts_ns_to_ctx(struct lttng_ctx **ctx); |
1242 | #else | |
1243 | static inline | |
1244 | int lttng_add_uts_ns_to_ctx(struct lttng_ctx **ctx) | |
1245 | { | |
1246 | return -ENOSYS; | |
1247 | } | |
1248 | #endif | |
1249 | ||
876e2e92 | 1250 | #if defined(CONFIG_TIME_NS) && \ |
5f4c791e | 1251 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,6,0)) |
876e2e92 MJ |
1252 | int lttng_add_time_ns_to_ctx(struct lttng_ctx **ctx); |
1253 | #else | |
1254 | static inline | |
1255 | int lttng_add_time_ns_to_ctx(struct lttng_ctx **ctx) | |
1256 | { | |
1257 | return -ENOSYS; | |
1258 | } | |
1259 | #endif | |
1260 | ||
dc923e75 MJ |
1261 | int lttng_add_uid_to_ctx(struct lttng_ctx **ctx); |
1262 | int lttng_add_euid_to_ctx(struct lttng_ctx **ctx); | |
1263 | int lttng_add_suid_to_ctx(struct lttng_ctx **ctx); | |
1264 | int lttng_add_gid_to_ctx(struct lttng_ctx **ctx); | |
1265 | int lttng_add_egid_to_ctx(struct lttng_ctx **ctx); | |
1266 | int lttng_add_sgid_to_ctx(struct lttng_ctx **ctx); | |
1267 | int lttng_add_vuid_to_ctx(struct lttng_ctx **ctx); | |
1268 | int lttng_add_veuid_to_ctx(struct lttng_ctx **ctx); | |
1269 | int lttng_add_vsuid_to_ctx(struct lttng_ctx **ctx); | |
1270 | int lttng_add_vgid_to_ctx(struct lttng_ctx **ctx); | |
1271 | int lttng_add_vegid_to_ctx(struct lttng_ctx **ctx); | |
1272 | int lttng_add_vsgid_to_ctx(struct lttng_ctx **ctx); | |
1273 | ||
8a3af9ee | 1274 | #if defined(CONFIG_PERF_EVENTS) |
c24a0d71 MD |
1275 | int lttng_add_perf_counter_to_ctx(uint32_t type, |
1276 | uint64_t config, | |
1277 | const char *name, | |
1278 | struct lttng_ctx **ctx); | |
1e367326 MD |
1279 | int lttng_cpuhp_perf_counter_online(unsigned int cpu, |
1280 | struct lttng_cpuhp_node *node); | |
1281 | int lttng_cpuhp_perf_counter_dead(unsigned int cpu, | |
1282 | struct lttng_cpuhp_node *node); | |
1d443b34 MD |
1283 | #else |
1284 | static inline | |
1285 | int lttng_add_perf_counter_to_ctx(uint32_t type, | |
1286 | uint64_t config, | |
1287 | const char *name, | |
1288 | struct lttng_ctx **ctx) | |
1289 | { | |
1290 | return -ENOSYS; | |
1291 | } | |
1e367326 MD |
1292 | static inline |
1293 | int lttng_cpuhp_perf_counter_online(unsigned int cpu, | |
1294 | struct lttng_cpuhp_node *node) | |
1295 | { | |
1296 | return 0; | |
1297 | } | |
1298 | static inline | |
1299 | int lttng_cpuhp_perf_counter_dead(unsigned int cpu, | |
1300 | struct lttng_cpuhp_node *node) | |
1301 | { | |
1302 | return 0; | |
1303 | } | |
1d443b34 | 1304 | #endif |
02119ee5 | 1305 | |
0c956676 MD |
1306 | int lttng_logger_init(void); |
1307 | void lttng_logger_exit(void); | |
1308 | ||
c337ddc2 MD |
1309 | extern int lttng_statedump_start(struct lttng_session *session); |
1310 | ||
acd614cc | 1311 | #ifdef CONFIG_KPROBES |
8bf17deb | 1312 | int lttng_kprobes_register_event(const char *name, |
f17701fb MD |
1313 | const char *symbol_name, |
1314 | uint64_t offset, | |
1315 | uint64_t addr, | |
a90917c3 | 1316 | struct lttng_event *event); |
8bf17deb FD |
1317 | void lttng_kprobes_unregister_event(struct lttng_event *event); |
1318 | void lttng_kprobes_destroy_event_private(struct lttng_event *event); | |
2b16f0c9 FD |
1319 | int lttng_kprobes_register_event_notifier(const char *symbol_name, |
1320 | uint64_t offset, | |
1321 | uint64_t addr, | |
1322 | struct lttng_event_notifier *event_notifier); | |
1323 | void lttng_kprobes_unregister_event_notifier(struct lttng_event_notifier *event_notifier); | |
1324 | void lttng_kprobes_destroy_event_notifier_private(struct lttng_event_notifier *event_notifier); | |
acd614cc MD |
1325 | #else |
1326 | static inline | |
8bf17deb | 1327 | int lttng_kprobes_register_event(const char *name, |
acd614cc MD |
1328 | const char *symbol_name, |
1329 | uint64_t offset, | |
1330 | uint64_t addr, | |
a90917c3 | 1331 | struct lttng_event *event) |
acd614cc MD |
1332 | { |
1333 | return -ENOSYS; | |
1334 | } | |
1335 | ||
25f53c39 | 1336 | static inline |
8bf17deb FD |
1337 | void lttng_kprobes_unregister_event(struct lttng_event *event) |
1338 | { | |
1339 | } | |
1340 | ||
1341 | static inline | |
1342 | void lttng_kprobes_destroy_event_private(struct lttng_event *event) | |
acd614cc MD |
1343 | { |
1344 | } | |
edeb3137 MD |
1345 | |
1346 | static inline | |
2b16f0c9 FD |
1347 | int lttng_kprobes_register_event_notifier(const char *symbol_name, |
1348 | uint64_t offset, | |
1349 | uint64_t addr, | |
1350 | struct lttng_event_notifier *event_notifier) | |
1351 | { | |
1352 | return -ENOSYS; | |
1353 | } | |
1354 | ||
1355 | static inline | |
1356 | void lttng_kprobes_unregister_event_notifier(struct lttng_event_notifier *event_notifier) | |
1357 | { | |
1358 | } | |
1359 | ||
1360 | static inline | |
1361 | void lttng_kprobes_destroy_event_notifier_private(struct lttng_event_notifier *event_notifier) | |
edeb3137 MD |
1362 | { |
1363 | } | |
acd614cc | 1364 | #endif |
d6d808f3 | 1365 | |
3aed4dca FD |
1366 | int lttng_event_add_callsite(struct lttng_event *event, |
1367 | struct lttng_kernel_event_callsite *callsite); | |
e33fc900 | 1368 | |
9de67196 FD |
1369 | int lttng_event_notifier_add_callsite(struct lttng_event_notifier *event_notifier, |
1370 | struct lttng_kernel_event_callsite *callsite); | |
1371 | ||
149b9a9d | 1372 | #ifdef CONFIG_UPROBES |
83b802dc | 1373 | int lttng_uprobes_register_event(const char *name, |
3aed4dca | 1374 | int fd, struct lttng_event *event); |
83b802dc | 1375 | int lttng_uprobes_event_add_callsite(struct lttng_event *event, |
3aed4dca | 1376 | struct lttng_kernel_event_callsite *callsite); |
83b802dc FD |
1377 | void lttng_uprobes_unregister_event(struct lttng_event *event); |
1378 | void lttng_uprobes_destroy_event_private(struct lttng_event *event); | |
9de67196 FD |
1379 | int lttng_uprobes_register_event_notifier(const char *name, |
1380 | int fd, struct lttng_event_notifier *event_notifier); | |
1381 | int lttng_uprobes_event_notifier_add_callsite(struct lttng_event_notifier *event_notifier, | |
1382 | struct lttng_kernel_event_callsite *callsite); | |
1383 | void lttng_uprobes_unregister_event_notifier(struct lttng_event_notifier *event_notifier); | |
1384 | void lttng_uprobes_destroy_event_notifier_private(struct lttng_event_notifier *event_notifier); | |
149b9a9d YB |
1385 | #else |
1386 | static inline | |
83b802dc | 1387 | int lttng_uprobes_register_event(const char *name, |
3aed4dca FD |
1388 | int fd, struct lttng_event *event) |
1389 | { | |
1390 | return -ENOSYS; | |
1391 | } | |
1392 | ||
1393 | static inline | |
83b802dc | 1394 | int lttng_uprobes_event_add_callsite(struct lttng_event *event, |
e33fc900 | 1395 | struct lttng_kernel_event_callsite *callsite) |
149b9a9d YB |
1396 | { |
1397 | return -ENOSYS; | |
1398 | } | |
1399 | ||
1400 | static inline | |
83b802dc | 1401 | void lttng_uprobes_unregister_event(struct lttng_event *event) |
149b9a9d YB |
1402 | { |
1403 | } | |
1404 | ||
1405 | static inline | |
83b802dc | 1406 | void lttng_uprobes_destroy_event_private(struct lttng_event *event) |
149b9a9d YB |
1407 | { |
1408 | } | |
9de67196 FD |
1409 | |
1410 | static inline | |
1411 | int lttng_uprobes_register_event_notifier(const char *name, | |
1412 | int fd, struct lttng_event_notifier *event_notifier) | |
1413 | { | |
1414 | return -ENOSYS; | |
1415 | } | |
1416 | ||
1417 | static inline | |
1418 | int lttng_uprobes_event_notifier_add_callsite(struct lttng_event_notifier *event_notifier, | |
1419 | struct lttng_kernel_event_callsite *callsite) | |
1420 | { | |
1421 | return -ENOSYS; | |
1422 | } | |
1423 | ||
1424 | static inline | |
1425 | void lttng_uprobes_unregister_event_notifier(struct lttng_event_notifier *event_notifier) | |
1426 | { | |
1427 | } | |
1428 | ||
1429 | static inline | |
1430 | void lttng_uprobes_destroy_event_notifier_private(struct lttng_event_notifier *event_notifier) | |
1431 | { | |
1432 | } | |
149b9a9d YB |
1433 | #endif |
1434 | ||
7371f44c MD |
1435 | #ifdef CONFIG_KRETPROBES |
1436 | int lttng_kretprobes_register(const char *name, | |
1437 | const char *symbol_name, | |
1438 | uint64_t offset, | |
1439 | uint64_t addr, | |
a90917c3 MD |
1440 | struct lttng_event *event_entry, |
1441 | struct lttng_event *event_exit); | |
1442 | void lttng_kretprobes_unregister(struct lttng_event *event); | |
1443 | void lttng_kretprobes_destroy_private(struct lttng_event *event); | |
a0493bef MD |
1444 | int lttng_kretprobes_event_enable_state(struct lttng_event *event, |
1445 | int enable); | |
7371f44c MD |
1446 | #else |
1447 | static inline | |
1448 | int lttng_kretprobes_register(const char *name, | |
1449 | const char *symbol_name, | |
1450 | uint64_t offset, | |
1451 | uint64_t addr, | |
a90917c3 MD |
1452 | struct lttng_event *event_entry, |
1453 | struct lttng_event *event_exit) | |
7371f44c MD |
1454 | { |
1455 | return -ENOSYS; | |
1456 | } | |
1457 | ||
1458 | static inline | |
a90917c3 | 1459 | void lttng_kretprobes_unregister(struct lttng_event *event) |
7371f44c MD |
1460 | { |
1461 | } | |
1462 | ||
1463 | static inline | |
a90917c3 | 1464 | void lttng_kretprobes_destroy_private(struct lttng_event *event) |
7371f44c MD |
1465 | { |
1466 | } | |
a0493bef MD |
1467 | |
1468 | static inline | |
1469 | int lttng_kretprobes_event_enable_state(struct lttng_event *event, | |
1470 | int enable) | |
1471 | { | |
1472 | return -ENOSYS; | |
1473 | } | |
7371f44c MD |
1474 | #endif |
1475 | ||
3db41b2c | 1476 | int lttng_calibrate(struct lttng_kernel_calibrate *calibrate); |
57105fc2 | 1477 | |
271b6681 | 1478 | extern const struct file_operations lttng_tracepoint_list_fops; |
2d2464bd | 1479 | extern const struct file_operations lttng_syscall_list_fops; |
271b6681 | 1480 | |
ef200626 | 1481 | #define TRACEPOINT_HAS_DATA_ARG |
ef200626 | 1482 | |
ceabb767 MD |
1483 | static inline bool lttng_is_bytewise_integer(const struct lttng_type *type) |
1484 | { | |
1485 | if (type->atype != atype_integer) | |
1486 | return false; | |
1487 | switch (type->u.integer.size) { | |
1488 | case 8: /* Fall-through. */ | |
1489 | case 16: /* Fall-through. */ | |
1490 | case 32: /* Fall-through. */ | |
1491 | case 64: | |
1492 | break; | |
1493 | default: | |
1494 | return false; | |
1495 | } | |
1496 | return true; | |
1497 | } | |
1498 | ||
a90917c3 | 1499 | #endif /* _LTTNG_EVENTS_H */ |