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92bc1e23 MD |
1 | /* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only) |
2 | * | |
3 | * lttng/events-internal.h | |
4 | * | |
5 | * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
6 | */ | |
7 | ||
8 | #ifndef _LTTNG_EVENTS_INTERNAL_H | |
9 | #define _LTTNG_EVENTS_INTERNAL_H | |
10 | ||
437d5aa5 MD |
11 | #include <lttng/events.h> |
12 | ||
255a028a MD |
13 | enum lttng_enabler_format_type { |
14 | LTTNG_ENABLER_FORMAT_STAR_GLOB, | |
15 | LTTNG_ENABLER_FORMAT_NAME, | |
16 | }; | |
17 | ||
18 | /* | |
19 | * Objects in a linked-list of enablers, owned by an event. | |
20 | */ | |
21 | struct lttng_enabler_ref { | |
22 | struct list_head node; /* enabler ref list */ | |
23 | struct lttng_enabler *ref; /* backward ref */ | |
24 | }; | |
25 | ||
0dba22ad MD |
26 | struct lttng_krp; /* Kretprobe handling */ |
27 | ||
28 | struct lttng_uprobe_handler { | |
29 | struct lttng_kernel_event_common *event; | |
30 | loff_t offset; | |
31 | struct uprobe_consumer up_consumer; | |
32 | struct list_head node; | |
33 | }; | |
34 | ||
35 | struct lttng_kprobe { | |
36 | struct kprobe kp; | |
37 | char *symbol_name; | |
38 | }; | |
39 | ||
40 | struct lttng_uprobe { | |
41 | struct inode *inode; | |
42 | struct list_head head; | |
43 | }; | |
44 | ||
45 | enum lttng_syscall_entryexit { | |
46 | LTTNG_SYSCALL_ENTRY, | |
47 | LTTNG_SYSCALL_EXIT, | |
48 | }; | |
49 | ||
50 | enum lttng_syscall_abi { | |
51 | LTTNG_SYSCALL_ABI_NATIVE, | |
52 | LTTNG_SYSCALL_ABI_COMPAT, | |
53 | }; | |
54 | ||
a67ba386 MD |
55 | struct lttng_kernel_event_common_private { |
56 | struct lttng_kernel_event_common *pub; /* Public event interface */ | |
57 | ||
58 | const struct lttng_kernel_event_desc *desc; | |
59 | /* Backward references: list of lttng_enabler_ref (ref to enablers) */ | |
60 | struct list_head enablers_ref_head; | |
61 | int registered; /* has reg'd tracepoint probe */ | |
62 | uint64_t user_token; | |
63 | ||
64 | int has_enablers_without_filter_bytecode; | |
dc7350d6 | 65 | /* list of struct lttng_kernel_bytecode_runtime, sorted by seqnum */ |
a67ba386 MD |
66 | struct list_head filter_bytecode_runtime_head; |
67 | enum lttng_kernel_abi_instrumentation instrumentation; | |
68 | /* Selected by instrumentation */ | |
69 | union { | |
70 | struct lttng_kprobe kprobe; | |
71 | struct lttng_uprobe uprobe; | |
72 | struct { | |
73 | struct lttng_krp *lttng_krp; | |
74 | char *symbol_name; | |
75 | } kretprobe; | |
76 | struct { | |
77 | enum lttng_syscall_entryexit entryexit; | |
78 | enum lttng_syscall_abi abi; | |
79 | struct hlist_node node; /* chain registered syscall event_notifier */ | |
80 | unsigned int syscall_id; | |
81 | } syscall; | |
82 | } u; | |
83 | }; | |
84 | ||
85 | struct lttng_kernel_event_recorder_private { | |
86 | struct lttng_kernel_event_common_private parent; | |
87 | ||
88 | struct lttng_kernel_event_recorder *pub; /* Public event interface */ | |
89 | struct list_head node; /* Event recorder list */ | |
90 | struct hlist_node hlist; /* Hash table of event recorders */ | |
91 | struct lttng_kernel_ctx *ctx; | |
92 | unsigned int id; | |
93 | unsigned int metadata_dumped:1; | |
94 | }; | |
95 | ||
96 | struct lttng_kernel_event_notifier_private { | |
97 | struct lttng_kernel_event_common_private parent; | |
98 | ||
99 | struct lttng_kernel_event_notifier *pub; /* Public event notifier interface */ | |
100 | struct lttng_event_notifier_group *group; /* weak ref */ | |
101 | size_t num_captures; /* Needed to allocate the msgpack array. */ | |
102 | uint64_t error_counter_index; | |
103 | struct list_head node; /* Event notifier list */ | |
104 | struct hlist_node hlist; /* Hash table of event notifiers */ | |
105 | struct list_head capture_bytecode_runtime_head; | |
106 | ||
107 | }; | |
108 | ||
8a445457 MD |
109 | enum lttng_kernel_bytecode_interpreter_ret { |
110 | LTTNG_KERNEL_BYTECODE_INTERPRETER_ERROR = -1, | |
111 | LTTNG_KERNEL_BYTECODE_INTERPRETER_OK = 0, | |
112 | }; | |
113 | ||
114 | enum lttng_kernel_bytecode_filter_result { | |
115 | LTTNG_KERNEL_BYTECODE_FILTER_ACCEPT = 0, | |
116 | LTTNG_KERNEL_BYTECODE_FILTER_REJECT = 1, | |
117 | }; | |
118 | ||
119 | struct lttng_kernel_bytecode_filter_ctx { | |
120 | enum lttng_kernel_bytecode_filter_result result; | |
121 | }; | |
122 | ||
478a7793 MD |
123 | struct lttng_interpreter_output; |
124 | ||
125 | enum lttng_kernel_bytecode_type { | |
126 | LTTNG_KERNEL_BYTECODE_TYPE_FILTER, | |
127 | LTTNG_KERNEL_BYTECODE_TYPE_CAPTURE, | |
128 | }; | |
129 | ||
130 | struct lttng_kernel_bytecode_node { | |
131 | enum lttng_kernel_bytecode_type type; | |
132 | struct list_head node; | |
133 | struct lttng_enabler *enabler; | |
134 | struct { | |
135 | uint32_t len; | |
136 | uint32_t reloc_offset; | |
137 | uint64_t seqnum; | |
138 | char data[]; | |
139 | } bc; | |
140 | }; | |
141 | ||
142 | struct lttng_kernel_bytecode_runtime { | |
143 | /* Associated bytecode */ | |
144 | enum lttng_kernel_bytecode_type type; | |
145 | struct lttng_kernel_bytecode_node *bc; | |
146 | int (*interpreter_func)(struct lttng_kernel_bytecode_runtime *kernel_bytecode, | |
147 | const char *interpreter_stack_data, | |
148 | struct lttng_kernel_probe_ctx *lttng_probe_ctx, | |
149 | void *caller_ctx); | |
150 | int link_failed; | |
151 | struct list_head node; /* list of bytecode runtime in event */ | |
152 | struct lttng_kernel_ctx *ctx; | |
153 | }; | |
154 | ||
b8b4704b MD |
155 | /* |
156 | * Enabler field, within whatever object is enabling an event. Target of | |
157 | * backward reference. | |
158 | */ | |
159 | struct lttng_enabler { | |
160 | enum lttng_enabler_format_type format_type; | |
161 | ||
9906b046 | 162 | /* head list of struct lttng_kernel_bytecode_node */ |
b8b4704b MD |
163 | struct list_head filter_bytecode_head; |
164 | ||
165 | struct lttng_kernel_abi_event event_param; | |
166 | unsigned int enabled:1; | |
167 | ||
168 | uint64_t user_token; /* User-provided token. */ | |
169 | }; | |
170 | ||
171 | struct lttng_event_enabler { | |
172 | struct lttng_enabler base; | |
173 | struct list_head node; /* per-session list of enablers */ | |
174 | struct lttng_channel *chan; | |
175 | }; | |
176 | ||
177 | struct lttng_event_notifier_enabler { | |
178 | struct lttng_enabler base; | |
179 | uint64_t error_counter_index; | |
180 | struct list_head node; /* List of event_notifier enablers */ | |
181 | struct lttng_event_notifier_group *group; | |
182 | ||
9906b046 | 183 | /* head list of struct lttng_kernel_bytecode_node */ |
b8b4704b MD |
184 | struct list_head capture_bytecode_head; |
185 | uint64_t num_captures; | |
186 | }; | |
187 | ||
7207017d MD |
188 | struct lttng_ctx_value { |
189 | union { | |
190 | int64_t s64; | |
191 | const char *str; | |
192 | double d; | |
193 | } u; | |
194 | }; | |
195 | ||
196 | /* | |
197 | * We need to keep this perf counter field separately from struct | |
198 | * lttng_kernel_ctx_field because cpu hotplug needs fixed-location addresses. | |
199 | */ | |
200 | struct lttng_perf_counter_field { | |
201 | #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) | |
202 | struct lttng_cpuhp_node cpuhp_prepare; | |
203 | struct lttng_cpuhp_node cpuhp_online; | |
204 | #else | |
205 | struct notifier_block nb; | |
206 | int hp_enable; | |
207 | #endif | |
208 | struct perf_event_attr *attr; | |
209 | struct perf_event **e; /* per-cpu array */ | |
210 | char *name; | |
211 | struct lttng_kernel_event_field *event_field; | |
212 | }; | |
213 | ||
214 | struct lttng_kernel_ctx_field { | |
215 | const struct lttng_kernel_event_field *event_field; | |
346cb5ee | 216 | size_t (*get_size)(void *priv, struct lttng_kernel_probe_ctx *probe_ctx, |
7207017d | 217 | size_t offset); |
346cb5ee | 218 | void (*record)(void *priv, struct lttng_kernel_probe_ctx *probe_ctx, |
7207017d MD |
219 | struct lib_ring_buffer_ctx *ctx, |
220 | struct lttng_channel *chan); | |
346cb5ee | 221 | void (*get_value)(void *priv, struct lttng_kernel_probe_ctx *probe_ctx, |
7207017d MD |
222 | struct lttng_ctx_value *value); |
223 | void (*destroy)(void *priv); | |
224 | void *priv; | |
225 | }; | |
226 | ||
227 | struct lttng_kernel_ctx { | |
228 | struct lttng_kernel_ctx_field *fields; | |
229 | unsigned int nr_fields; | |
230 | unsigned int allocated_fields; | |
231 | size_t largest_align; /* in bytes */ | |
232 | }; | |
233 | ||
a8605b84 MD |
234 | struct lttng_metadata_cache { |
235 | char *data; /* Metadata cache */ | |
236 | unsigned int cache_alloc; /* Metadata allocated size (bytes) */ | |
237 | unsigned int metadata_written; /* Number of bytes written in metadata cache */ | |
238 | atomic_t producing; /* Metadata being produced (incomplete) */ | |
239 | struct kref refcount; /* Metadata cache usage */ | |
240 | struct list_head metadata_stream; /* Metadata stream list */ | |
241 | uuid_le uuid; /* Trace session unique ID (copy) */ | |
242 | struct mutex lock; /* Produce/consume lock */ | |
243 | uint64_t version; /* Current version of the metadata */ | |
244 | }; | |
245 | ||
da1fe18f MD |
246 | struct lttng_kernel_channel_buffer_ops_private { |
247 | struct lttng_kernel_channel_buffer_ops *pub; /* Public channel buffer ops interface */ | |
248 | ||
249 | struct channel *(*channel_create)(const char *name, | |
250 | void *priv, | |
251 | void *buf_addr, | |
252 | size_t subbuf_size, size_t num_subbuf, | |
253 | unsigned int switch_timer_interval, | |
254 | unsigned int read_timer_interval); | |
255 | void (*channel_destroy)(struct channel *chan); | |
256 | struct lib_ring_buffer *(*buffer_read_open)(struct channel *chan); | |
257 | int (*buffer_has_read_closed_stream)(struct channel *chan); | |
258 | void (*buffer_read_close)(struct lib_ring_buffer *buf); | |
259 | /* | |
260 | * packet_avail_size returns the available size in the current | |
261 | * packet. Note that the size returned is only a hint, since it | |
262 | * may change due to concurrent writes. | |
263 | */ | |
264 | size_t (*packet_avail_size)(struct channel *chan); | |
265 | wait_queue_head_t *(*get_writer_buf_wait_queue)(struct channel *chan, int cpu); | |
266 | wait_queue_head_t *(*get_hp_wait_queue)(struct channel *chan); | |
267 | int (*is_finalized)(struct channel *chan); | |
268 | int (*is_disabled)(struct channel *chan); | |
269 | int (*timestamp_begin) (const struct lib_ring_buffer_config *config, | |
270 | struct lib_ring_buffer *bufb, | |
271 | uint64_t *timestamp_begin); | |
272 | int (*timestamp_end) (const struct lib_ring_buffer_config *config, | |
273 | struct lib_ring_buffer *bufb, | |
274 | uint64_t *timestamp_end); | |
275 | int (*events_discarded) (const struct lib_ring_buffer_config *config, | |
276 | struct lib_ring_buffer *bufb, | |
277 | uint64_t *events_discarded); | |
278 | int (*content_size) (const struct lib_ring_buffer_config *config, | |
279 | struct lib_ring_buffer *bufb, | |
280 | uint64_t *content_size); | |
281 | int (*packet_size) (const struct lib_ring_buffer_config *config, | |
282 | struct lib_ring_buffer *bufb, | |
283 | uint64_t *packet_size); | |
284 | int (*stream_id) (const struct lib_ring_buffer_config *config, | |
285 | struct lib_ring_buffer *bufb, | |
286 | uint64_t *stream_id); | |
287 | int (*current_timestamp) (const struct lib_ring_buffer_config *config, | |
288 | struct lib_ring_buffer *bufb, | |
289 | uint64_t *ts); | |
290 | int (*sequence_number) (const struct lib_ring_buffer_config *config, | |
291 | struct lib_ring_buffer *bufb, | |
292 | uint64_t *seq); | |
293 | int (*instance_id) (const struct lib_ring_buffer_config *config, | |
294 | struct lib_ring_buffer *bufb, | |
295 | uint64_t *id); | |
296 | }; | |
297 | ||
7207017d MD |
298 | extern struct lttng_kernel_ctx *lttng_static_ctx; |
299 | ||
437d5aa5 MD |
300 | static inline |
301 | const struct lttng_kernel_type_integer *lttng_kernel_get_type_integer(const struct lttng_kernel_type_common *type) | |
302 | { | |
303 | if (type->type != lttng_kernel_type_integer) | |
304 | return NULL; | |
305 | return container_of(type, const struct lttng_kernel_type_integer, parent); | |
306 | } | |
307 | ||
308 | static inline | |
309 | const struct lttng_kernel_type_string *lttng_kernel_get_type_string(const struct lttng_kernel_type_common *type) | |
310 | { | |
311 | if (type->type != lttng_kernel_type_string) | |
312 | return NULL; | |
313 | return container_of(type, const struct lttng_kernel_type_string, parent); | |
314 | } | |
315 | ||
316 | static inline | |
317 | const struct lttng_kernel_type_enum *lttng_kernel_get_type_enum(const struct lttng_kernel_type_common *type) | |
318 | { | |
319 | if (type->type != lttng_kernel_type_enum) | |
320 | return NULL; | |
321 | return container_of(type, const struct lttng_kernel_type_enum, parent); | |
322 | } | |
323 | ||
324 | static inline | |
325 | const struct lttng_kernel_type_array *lttng_kernel_get_type_array(const struct lttng_kernel_type_common *type) | |
326 | { | |
327 | if (type->type != lttng_kernel_type_array) | |
328 | return NULL; | |
329 | return container_of(type, const struct lttng_kernel_type_array, parent); | |
330 | } | |
331 | ||
332 | static inline | |
333 | const struct lttng_kernel_type_sequence *lttng_kernel_get_type_sequence(const struct lttng_kernel_type_common *type) | |
334 | { | |
335 | if (type->type != lttng_kernel_type_sequence) | |
336 | return NULL; | |
337 | return container_of(type, const struct lttng_kernel_type_sequence, parent); | |
338 | } | |
339 | ||
340 | static inline | |
341 | const struct lttng_kernel_type_struct *lttng_kernel_get_type_struct(const struct lttng_kernel_type_common *type) | |
342 | { | |
343 | if (type->type != lttng_kernel_type_struct) | |
344 | return NULL; | |
345 | return container_of(type, const struct lttng_kernel_type_struct, parent); | |
346 | } | |
347 | ||
348 | static inline | |
349 | const struct lttng_kernel_type_variant *lttng_kernel_get_type_variant(const struct lttng_kernel_type_common *type) | |
350 | { | |
351 | if (type->type != lttng_kernel_type_variant) | |
352 | return NULL; | |
353 | return container_of(type, const struct lttng_kernel_type_variant, parent); | |
354 | } | |
355 | ||
356 | static inline bool lttng_kernel_type_is_bytewise_integer(const struct lttng_kernel_type_common *type) | |
357 | { | |
358 | const struct lttng_kernel_type_integer *type_integer = lttng_kernel_get_type_integer(type); | |
359 | ||
360 | if (!type_integer) | |
361 | return false; | |
362 | switch (type_integer->size) { | |
363 | case 8: /* Fall-through. */ | |
364 | case 16: /* Fall-through. */ | |
365 | case 32: /* Fall-through. */ | |
366 | case 64: | |
367 | break; | |
368 | default: | |
369 | return false; | |
370 | } | |
371 | return true; | |
372 | } | |
373 | ||
8a445457 MD |
374 | int lttng_kernel_interpret_event_filter(const struct lttng_kernel_event_common *event, |
375 | const char *interpreter_stack_data, | |
346cb5ee | 376 | struct lttng_kernel_probe_ctx *probe_ctx, |
8a445457 MD |
377 | void *event_filter_ctx); |
378 | ||
b8b4704b MD |
379 | static inline |
380 | struct lttng_enabler *lttng_event_enabler_as_enabler( | |
381 | struct lttng_event_enabler *event_enabler) | |
382 | { | |
383 | return &event_enabler->base; | |
384 | } | |
385 | ||
386 | static inline | |
387 | struct lttng_enabler *lttng_event_notifier_enabler_as_enabler( | |
388 | struct lttng_event_notifier_enabler *event_notifier_enabler) | |
389 | { | |
390 | return &event_notifier_enabler->base; | |
391 | } | |
392 | ||
7207017d MD |
393 | int lttng_context_init(void); |
394 | void lttng_context_exit(void); | |
395 | int lttng_kernel_context_append(struct lttng_kernel_ctx **ctx_p, | |
396 | const struct lttng_kernel_ctx_field *f); | |
397 | void lttng_kernel_context_remove_last(struct lttng_kernel_ctx **ctx_p); | |
398 | struct lttng_kernel_ctx_field *lttng_kernel_get_context_field_from_index(struct lttng_kernel_ctx *ctx, | |
399 | size_t index); | |
400 | int lttng_kernel_find_context(struct lttng_kernel_ctx *ctx, const char *name); | |
401 | int lttng_kernel_get_context_index(struct lttng_kernel_ctx *ctx, const char *name); | |
402 | void lttng_kernel_destroy_context(struct lttng_kernel_ctx *ctx); | |
403 | int lttng_add_pid_to_ctx(struct lttng_kernel_ctx **ctx); | |
404 | int lttng_add_cpu_id_to_ctx(struct lttng_kernel_ctx **ctx); | |
405 | int lttng_add_procname_to_ctx(struct lttng_kernel_ctx **ctx); | |
406 | int lttng_add_prio_to_ctx(struct lttng_kernel_ctx **ctx); | |
407 | int lttng_add_nice_to_ctx(struct lttng_kernel_ctx **ctx); | |
408 | int lttng_add_vpid_to_ctx(struct lttng_kernel_ctx **ctx); | |
409 | int lttng_add_tid_to_ctx(struct lttng_kernel_ctx **ctx); | |
410 | int lttng_add_vtid_to_ctx(struct lttng_kernel_ctx **ctx); | |
411 | int lttng_add_ppid_to_ctx(struct lttng_kernel_ctx **ctx); | |
412 | int lttng_add_vppid_to_ctx(struct lttng_kernel_ctx **ctx); | |
413 | int lttng_add_hostname_to_ctx(struct lttng_kernel_ctx **ctx); | |
414 | int lttng_add_interruptible_to_ctx(struct lttng_kernel_ctx **ctx); | |
415 | int lttng_add_need_reschedule_to_ctx(struct lttng_kernel_ctx **ctx); | |
416 | #if defined(CONFIG_PREEMPT_RT_FULL) || defined(CONFIG_PREEMPT) | |
417 | int lttng_add_preemptible_to_ctx(struct lttng_kernel_ctx **ctx); | |
418 | #else | |
419 | static inline | |
420 | int lttng_add_preemptible_to_ctx(struct lttng_kernel_ctx **ctx) | |
421 | { | |
422 | return -ENOSYS; | |
423 | } | |
424 | #endif | |
425 | #ifdef CONFIG_PREEMPT_RT_FULL | |
426 | int lttng_add_migratable_to_ctx(struct lttng_kernel_ctx **ctx); | |
427 | #else | |
428 | static inline | |
429 | int lttng_add_migratable_to_ctx(struct lttng_kernel_ctx **ctx) | |
430 | { | |
431 | return -ENOSYS; | |
432 | } | |
433 | #endif | |
434 | ||
435 | int lttng_add_callstack_to_ctx(struct lttng_kernel_ctx **ctx, int type); | |
436 | ||
437 | #if defined(CONFIG_CGROUPS) && \ | |
438 | ((LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,6,0)) || \ | |
439 | LTTNG_UBUNTU_KERNEL_RANGE(4,4,0,0, 4,5,0,0)) | |
440 | int lttng_add_cgroup_ns_to_ctx(struct lttng_kernel_ctx **ctx); | |
441 | #else | |
442 | static inline | |
443 | int lttng_add_cgroup_ns_to_ctx(struct lttng_kernel_ctx **ctx) | |
444 | { | |
445 | return -ENOSYS; | |
446 | } | |
447 | #endif | |
448 | ||
449 | #if defined(CONFIG_IPC_NS) && \ | |
450 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) | |
451 | int lttng_add_ipc_ns_to_ctx(struct lttng_kernel_ctx **ctx); | |
452 | #else | |
453 | static inline | |
454 | int lttng_add_ipc_ns_to_ctx(struct lttng_kernel_ctx **ctx) | |
455 | { | |
456 | return -ENOSYS; | |
457 | } | |
458 | #endif | |
459 | ||
460 | #if !defined(LTTNG_MNT_NS_MISSING_HEADER) && \ | |
461 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) | |
462 | int lttng_add_mnt_ns_to_ctx(struct lttng_kernel_ctx **ctx); | |
463 | #else | |
464 | static inline | |
465 | int lttng_add_mnt_ns_to_ctx(struct lttng_kernel_ctx **ctx) | |
466 | { | |
467 | return -ENOSYS; | |
468 | } | |
469 | #endif | |
470 | ||
471 | #if defined(CONFIG_NET_NS) && \ | |
472 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) | |
473 | int lttng_add_net_ns_to_ctx(struct lttng_kernel_ctx **ctx); | |
474 | #else | |
475 | static inline | |
476 | int lttng_add_net_ns_to_ctx(struct lttng_kernel_ctx **ctx) | |
477 | { | |
478 | return -ENOSYS; | |
479 | } | |
480 | #endif | |
481 | ||
482 | #if defined(CONFIG_PID_NS) && \ | |
483 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) | |
484 | int lttng_add_pid_ns_to_ctx(struct lttng_kernel_ctx **ctx); | |
485 | #else | |
486 | static inline | |
487 | int lttng_add_pid_ns_to_ctx(struct lttng_kernel_ctx **ctx) | |
488 | { | |
489 | return -ENOSYS; | |
490 | } | |
491 | #endif | |
492 | ||
493 | #if defined(CONFIG_USER_NS) && \ | |
494 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) | |
495 | int lttng_add_user_ns_to_ctx(struct lttng_kernel_ctx **ctx); | |
496 | #else | |
497 | static inline | |
498 | int lttng_add_user_ns_to_ctx(struct lttng_kernel_ctx **ctx) | |
499 | { | |
500 | return -ENOSYS; | |
501 | } | |
502 | #endif | |
503 | ||
504 | #if defined(CONFIG_UTS_NS) && \ | |
505 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) | |
506 | int lttng_add_uts_ns_to_ctx(struct lttng_kernel_ctx **ctx); | |
507 | #else | |
508 | static inline | |
509 | int lttng_add_uts_ns_to_ctx(struct lttng_kernel_ctx **ctx) | |
510 | { | |
511 | return -ENOSYS; | |
512 | } | |
513 | #endif | |
514 | ||
515 | #if defined(CONFIG_TIME_NS) && \ | |
516 | (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,6,0)) | |
517 | int lttng_add_time_ns_to_ctx(struct lttng_kernel_ctx **ctx); | |
518 | #else | |
519 | static inline | |
520 | int lttng_add_time_ns_to_ctx(struct lttng_kernel_ctx **ctx) | |
521 | { | |
522 | return -ENOSYS; | |
523 | } | |
524 | #endif | |
525 | ||
526 | int lttng_add_uid_to_ctx(struct lttng_kernel_ctx **ctx); | |
527 | int lttng_add_euid_to_ctx(struct lttng_kernel_ctx **ctx); | |
528 | int lttng_add_suid_to_ctx(struct lttng_kernel_ctx **ctx); | |
529 | int lttng_add_gid_to_ctx(struct lttng_kernel_ctx **ctx); | |
530 | int lttng_add_egid_to_ctx(struct lttng_kernel_ctx **ctx); | |
531 | int lttng_add_sgid_to_ctx(struct lttng_kernel_ctx **ctx); | |
532 | int lttng_add_vuid_to_ctx(struct lttng_kernel_ctx **ctx); | |
533 | int lttng_add_veuid_to_ctx(struct lttng_kernel_ctx **ctx); | |
534 | int lttng_add_vsuid_to_ctx(struct lttng_kernel_ctx **ctx); | |
535 | int lttng_add_vgid_to_ctx(struct lttng_kernel_ctx **ctx); | |
536 | int lttng_add_vegid_to_ctx(struct lttng_kernel_ctx **ctx); | |
537 | int lttng_add_vsgid_to_ctx(struct lttng_kernel_ctx **ctx); | |
538 | ||
539 | #if defined(CONFIG_PERF_EVENTS) | |
540 | int lttng_add_perf_counter_to_ctx(uint32_t type, | |
541 | uint64_t config, | |
542 | const char *name, | |
543 | struct lttng_kernel_ctx **ctx); | |
544 | int lttng_cpuhp_perf_counter_online(unsigned int cpu, | |
545 | struct lttng_cpuhp_node *node); | |
546 | int lttng_cpuhp_perf_counter_dead(unsigned int cpu, | |
547 | struct lttng_cpuhp_node *node); | |
548 | #else | |
549 | static inline | |
550 | int lttng_add_perf_counter_to_ctx(uint32_t type, | |
551 | uint64_t config, | |
552 | const char *name, | |
553 | struct lttng_kernel_ctx **ctx) | |
554 | { | |
555 | return -ENOSYS; | |
556 | } | |
557 | static inline | |
558 | int lttng_cpuhp_perf_counter_online(unsigned int cpu, | |
559 | struct lttng_cpuhp_node *node) | |
560 | { | |
561 | return 0; | |
562 | } | |
563 | static inline | |
564 | int lttng_cpuhp_perf_counter_dead(unsigned int cpu, | |
565 | struct lttng_cpuhp_node *node) | |
566 | { | |
567 | return 0; | |
568 | } | |
569 | #endif | |
570 | ||
255a028a MD |
571 | struct lttng_event_enabler *lttng_event_enabler_create( |
572 | enum lttng_enabler_format_type format_type, | |
573 | struct lttng_kernel_abi_event *event_param, | |
574 | struct lttng_channel *chan); | |
575 | ||
576 | int lttng_event_enabler_enable(struct lttng_event_enabler *event_enabler); | |
577 | int lttng_event_enabler_disable(struct lttng_event_enabler *event_enabler); | |
578 | struct lttng_event_notifier_enabler *lttng_event_notifier_enabler_create( | |
579 | struct lttng_event_notifier_group *event_notifier_group, | |
580 | enum lttng_enabler_format_type format_type, | |
581 | struct lttng_kernel_abi_event_notifier *event_notifier_param); | |
582 | ||
583 | int lttng_event_notifier_enabler_enable( | |
584 | struct lttng_event_notifier_enabler *event_notifier_enabler); | |
585 | int lttng_event_notifier_enabler_disable( | |
586 | struct lttng_event_notifier_enabler *event_notifier_enabler); | |
587 | ||
588 | int lttng_event_enabler_attach_filter_bytecode(struct lttng_event_enabler *event_enabler, | |
589 | struct lttng_kernel_abi_filter_bytecode __user *bytecode); | |
590 | int lttng_event_notifier_enabler_attach_filter_bytecode( | |
591 | struct lttng_event_notifier_enabler *event_notifier_enabler, | |
592 | struct lttng_kernel_abi_filter_bytecode __user *bytecode); | |
593 | int lttng_event_notifier_enabler_attach_capture_bytecode( | |
594 | struct lttng_event_notifier_enabler *event_notifier_enabler, | |
595 | struct lttng_kernel_abi_capture_bytecode __user *bytecode); | |
596 | ||
597 | int lttng_desc_match_enabler(const struct lttng_kernel_event_desc *desc, | |
598 | struct lttng_enabler *enabler); | |
599 | ||
600 | void lttng_enabler_link_bytecode(const struct lttng_kernel_event_desc *event_desc, | |
601 | struct lttng_kernel_ctx *ctx, | |
602 | struct list_head *instance_bytecode_runtime_head, | |
603 | struct list_head *enabler_bytecode_runtime_head); | |
604 | ||
605 | #if defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS) | |
606 | int lttng_syscalls_register_event(struct lttng_event_enabler *event_enabler); | |
607 | int lttng_syscalls_unregister_channel(struct lttng_channel *chan); | |
608 | int lttng_syscalls_destroy_event(struct lttng_channel *chan); | |
609 | int lttng_syscall_filter_enable_event( | |
610 | struct lttng_channel *chan, | |
611 | struct lttng_kernel_event_recorder *event); | |
612 | int lttng_syscall_filter_disable_event( | |
613 | struct lttng_channel *chan, | |
614 | struct lttng_kernel_event_recorder *event); | |
615 | ||
616 | long lttng_channel_syscall_mask(struct lttng_channel *channel, | |
617 | struct lttng_kernel_abi_syscall_mask __user *usyscall_mask); | |
618 | ||
619 | int lttng_syscalls_register_event_notifier( | |
620 | struct lttng_event_notifier_enabler *event_notifier_enabler); | |
621 | int lttng_syscalls_create_matching_event_notifiers( | |
622 | struct lttng_event_notifier_enabler *event_notifier_enabler); | |
623 | int lttng_syscalls_unregister_event_notifier_group(struct lttng_event_notifier_group *group); | |
624 | int lttng_syscall_filter_enable_event_notifier(struct lttng_kernel_event_notifier *event_notifier); | |
625 | int lttng_syscall_filter_disable_event_notifier(struct lttng_kernel_event_notifier *event_notifier); | |
626 | #else | |
627 | static inline int lttng_syscalls_register_event( | |
628 | struct lttng_event_enabler *event_enabler) | |
629 | { | |
630 | return -ENOSYS; | |
631 | } | |
632 | ||
633 | static inline int lttng_syscalls_unregister_channel(struct lttng_channel *chan) | |
634 | { | |
635 | return 0; | |
636 | } | |
637 | ||
638 | static inline int lttng_syscalls_destroy(struct lttng_channel *chan) | |
639 | { | |
640 | return 0; | |
641 | } | |
642 | ||
643 | static inline int lttng_syscall_filter_enable_event(struct lttng_channel *chan, | |
644 | struct lttng_kernel_event_recorder *event); | |
645 | { | |
646 | return -ENOSYS; | |
647 | } | |
648 | ||
649 | static inline int lttng_syscall_filter_disable_event(struct lttng_channel *chan, | |
650 | struct lttng_kernel_event_recorder *event); | |
651 | { | |
652 | return -ENOSYS; | |
653 | } | |
654 | ||
655 | static inline long lttng_channel_syscall_mask(struct lttng_channel *channel, | |
656 | struct lttng_kernel_syscall_mask __user *usyscall_mask) | |
657 | { | |
658 | return -ENOSYS; | |
659 | } | |
660 | ||
661 | static inline int lttng_syscalls_register_event_notifier( | |
662 | struct lttng_event_notifier_group *group) | |
663 | { | |
664 | return -ENOSYS; | |
665 | } | |
666 | ||
667 | static inline int lttng_syscalls_unregister_event_notifier_group( | |
668 | struct lttng_event_notifier_group *group) | |
669 | { | |
670 | return 0; | |
671 | } | |
672 | ||
673 | static inline int lttng_syscall_filter_enable_event_notifier( | |
674 | struct lttng_event_notifier_group *group, | |
675 | const char *name) | |
676 | { | |
677 | return -ENOSYS; | |
678 | } | |
679 | ||
680 | static inline int lttng_syscall_filter_disable_event_notifier( | |
681 | struct lttng_event_notifier_group *group, | |
682 | const char *name) | |
683 | { | |
684 | return -ENOSYS; | |
685 | } | |
7207017d | 686 | |
255a028a | 687 | #endif |
7207017d | 688 | |
cb9a4b67 MD |
689 | #ifdef CONFIG_KPROBES |
690 | int lttng_kprobes_register_event(const char *name, | |
691 | const char *symbol_name, | |
692 | uint64_t offset, | |
693 | uint64_t addr, | |
694 | struct lttng_kernel_event_recorder *event); | |
695 | void lttng_kprobes_unregister_event(struct lttng_kernel_event_recorder *event); | |
696 | void lttng_kprobes_destroy_event_private(struct lttng_kernel_event_recorder *event); | |
697 | int lttng_kprobes_register_event_notifier(const char *symbol_name, | |
698 | uint64_t offset, | |
699 | uint64_t addr, | |
700 | struct lttng_kernel_event_notifier *event_notifier); | |
701 | void lttng_kprobes_unregister_event_notifier(struct lttng_kernel_event_notifier *event_notifier); | |
702 | void lttng_kprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier *event_notifier); | |
703 | #else | |
704 | static inline | |
705 | int lttng_kprobes_register_event(const char *name, | |
706 | const char *symbol_name, | |
707 | uint64_t offset, | |
708 | uint64_t addr, | |
709 | struct lttng_kernel_event_recorder *event) | |
710 | { | |
711 | return -ENOSYS; | |
712 | } | |
713 | ||
714 | static inline | |
715 | void lttng_kprobes_unregister_event(struct lttng_kernel_event_recorder *event) | |
716 | { | |
717 | } | |
718 | ||
719 | static inline | |
720 | void lttng_kprobes_destroy_event_private(struct lttng_kernel_event_recorder *event) | |
721 | { | |
722 | } | |
723 | ||
724 | static inline | |
725 | int lttng_kprobes_register_event_notifier(const char *symbol_name, | |
726 | uint64_t offset, | |
727 | uint64_t addr, | |
728 | struct lttng_kernel_event_notifier *event_notifier) | |
729 | { | |
730 | return -ENOSYS; | |
731 | } | |
732 | ||
733 | static inline | |
734 | void lttng_kprobes_unregister_event_notifier(struct lttng_kernel_event_notifier *event_notifier) | |
735 | { | |
736 | } | |
737 | ||
738 | static inline | |
739 | void lttng_kprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier *event_notifier) | |
740 | { | |
741 | } | |
742 | #endif | |
743 | ||
744 | int lttng_event_add_callsite(struct lttng_kernel_event_common *event, | |
745 | struct lttng_kernel_abi_event_callsite __user *callsite); | |
746 | ||
747 | #ifdef CONFIG_UPROBES | |
748 | int lttng_uprobes_register_event(const char *name, | |
749 | int fd, struct lttng_kernel_event_recorder *event); | |
750 | int lttng_uprobes_event_add_callsite(struct lttng_kernel_event_common *event, | |
751 | struct lttng_kernel_abi_event_callsite __user *callsite); | |
752 | void lttng_uprobes_unregister_event(struct lttng_kernel_event_recorder *event); | |
753 | void lttng_uprobes_destroy_event_private(struct lttng_kernel_event_recorder *event); | |
754 | int lttng_uprobes_register_event_notifier(const char *name, | |
755 | int fd, struct lttng_kernel_event_notifier *event_notifier); | |
756 | void lttng_uprobes_unregister_event_notifier(struct lttng_kernel_event_notifier *event_notifier); | |
757 | void lttng_uprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier *event_notifier); | |
758 | #else | |
759 | static inline | |
760 | int lttng_uprobes_register_event(const char *name, | |
761 | int fd, struct lttng_kernel_event_recorder *event) | |
762 | { | |
763 | return -ENOSYS; | |
764 | } | |
765 | ||
766 | static inline | |
767 | int lttng_uprobes_event_add_callsite(struct lttng_kernel_event_common *event, | |
768 | struct lttng_kernel_abi_event_callsite __user *callsite) | |
769 | { | |
770 | return -ENOSYS; | |
771 | } | |
772 | ||
773 | static inline | |
774 | void lttng_uprobes_unregister_event(struct lttng_kernel_event_recorder *event) | |
775 | { | |
776 | } | |
777 | ||
778 | static inline | |
779 | void lttng_uprobes_destroy_event_private(struct lttng_kernel_event_recorder *event) | |
780 | { | |
781 | } | |
782 | ||
783 | static inline | |
784 | int lttng_uprobes_register_event_notifier(const char *name, | |
785 | int fd, struct lttng_kernel_event_notifier *event_notifier) | |
786 | { | |
787 | return -ENOSYS; | |
788 | } | |
789 | ||
790 | static inline | |
791 | void lttng_uprobes_unregister_event_notifier(struct lttng_kernel_event_notifier *event_notifier) | |
792 | { | |
793 | } | |
794 | ||
795 | static inline | |
796 | void lttng_uprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier *event_notifier) | |
797 | { | |
798 | } | |
799 | #endif | |
800 | ||
801 | #ifdef CONFIG_KRETPROBES | |
802 | int lttng_kretprobes_register(const char *name, | |
803 | const char *symbol_name, | |
804 | uint64_t offset, | |
805 | uint64_t addr, | |
806 | struct lttng_kernel_event_recorder *event_entry, | |
807 | struct lttng_kernel_event_recorder *event_exit); | |
808 | void lttng_kretprobes_unregister(struct lttng_kernel_event_recorder *event); | |
809 | void lttng_kretprobes_destroy_private(struct lttng_kernel_event_recorder *event); | |
810 | int lttng_kretprobes_event_enable_state(struct lttng_kernel_event_common *event, | |
811 | int enable); | |
812 | #else | |
813 | static inline | |
814 | int lttng_kretprobes_register(const char *name, | |
815 | const char *symbol_name, | |
816 | uint64_t offset, | |
817 | uint64_t addr, | |
818 | struct lttng_kernel_event_recorder *event_entry, | |
819 | struct lttng_kernel_event_recorder *event_exit) | |
820 | { | |
821 | return -ENOSYS; | |
822 | } | |
823 | ||
824 | static inline | |
825 | void lttng_kretprobes_unregister(struct lttng_kernel_event_recorder *event) | |
826 | { | |
827 | } | |
828 | ||
829 | static inline | |
830 | void lttng_kretprobes_destroy_private(struct lttng_kernel_event_recorder *event) | |
831 | { | |
832 | } | |
833 | ||
834 | static inline | |
835 | int lttng_kretprobes_event_enable_state(struct lttng_kernel_event_common *event, | |
836 | int enable) | |
837 | { | |
838 | return -ENOSYS; | |
839 | } | |
840 | #endif | |
841 | ||
17f90b04 MD |
842 | void lttng_lock_sessions(void); |
843 | void lttng_unlock_sessions(void); | |
844 | ||
845 | struct list_head *lttng_get_probe_list_head(void); | |
846 | ||
847 | int lttng_fix_pending_events(void); | |
848 | int lttng_fix_pending_event_notifiers(void); | |
849 | int lttng_session_active(void); | |
850 | bool lttng_event_notifier_active(void); | |
851 | ||
852 | struct lttng_session *lttng_session_create(void); | |
853 | int lttng_session_enable(struct lttng_session *session); | |
854 | int lttng_session_disable(struct lttng_session *session); | |
855 | void lttng_session_destroy(struct lttng_session *session); | |
856 | int lttng_session_metadata_regenerate(struct lttng_session *session); | |
857 | int lttng_session_statedump(struct lttng_session *session); | |
858 | void metadata_cache_destroy(struct kref *kref); | |
859 | ||
860 | struct lttng_counter *lttng_kernel_counter_create( | |
861 | const char *counter_transport_name, size_t number_dimensions, | |
862 | const size_t *dimensions_sizes); | |
863 | int lttng_kernel_counter_read(struct lttng_counter *counter, | |
864 | const size_t *dimension_indexes, int32_t cpu, | |
865 | int64_t *val, bool *overflow, bool *underflow); | |
866 | int lttng_kernel_counter_aggregate(struct lttng_counter *counter, | |
867 | const size_t *dimension_indexes, int64_t *val, | |
868 | bool *overflow, bool *underflow); | |
869 | int lttng_kernel_counter_clear(struct lttng_counter *counter, | |
870 | const size_t *dimension_indexes); | |
871 | struct lttng_event_notifier_group *lttng_event_notifier_group_create(void); | |
872 | int lttng_event_notifier_group_create_error_counter( | |
873 | struct file *event_notifier_group_file, | |
874 | const struct lttng_kernel_abi_counter_conf *error_counter_conf); | |
875 | void lttng_event_notifier_group_destroy( | |
876 | struct lttng_event_notifier_group *event_notifier_group); | |
877 | ||
878 | struct lttng_channel *lttng_channel_create(struct lttng_session *session, | |
879 | const char *transport_name, | |
880 | void *buf_addr, | |
881 | size_t subbuf_size, size_t num_subbuf, | |
882 | unsigned int switch_timer_interval, | |
883 | unsigned int read_timer_interval, | |
884 | enum channel_type channel_type); | |
885 | struct lttng_channel *lttng_global_channel_create(struct lttng_session *session, | |
886 | int overwrite, void *buf_addr, | |
887 | size_t subbuf_size, size_t num_subbuf, | |
888 | unsigned int switch_timer_interval, | |
889 | unsigned int read_timer_interval); | |
890 | ||
891 | void lttng_metadata_channel_destroy(struct lttng_channel *chan); | |
892 | struct lttng_kernel_event_recorder *lttng_kernel_event_recorder_create(struct lttng_channel *chan, | |
893 | struct lttng_kernel_abi_event *event_param, | |
894 | const struct lttng_kernel_event_desc *event_desc, | |
895 | enum lttng_kernel_abi_instrumentation itype); | |
896 | struct lttng_kernel_event_recorder *_lttng_kernel_event_recorder_create(struct lttng_channel *chan, | |
897 | struct lttng_kernel_abi_event *event_param, | |
898 | const struct lttng_kernel_event_desc *event_desc, | |
899 | enum lttng_kernel_abi_instrumentation itype); | |
900 | struct lttng_kernel_event_recorder *lttng_event_compat_old_create(struct lttng_channel *chan, | |
901 | struct lttng_kernel_abi_old_event *old_event_param, | |
902 | const struct lttng_kernel_event_desc *internal_desc); | |
903 | ||
904 | struct lttng_kernel_event_notifier *lttng_event_notifier_create( | |
905 | const struct lttng_kernel_event_desc *event_notifier_desc, | |
906 | uint64_t id, | |
907 | uint64_t error_counter_idx, | |
908 | struct lttng_event_notifier_group *event_notifier_group, | |
909 | struct lttng_kernel_abi_event_notifier *event_notifier_param, | |
910 | enum lttng_kernel_abi_instrumentation itype); | |
911 | struct lttng_kernel_event_notifier *_lttng_event_notifier_create( | |
912 | const struct lttng_kernel_event_desc *event_notifier_desc, | |
913 | uint64_t id, | |
914 | uint64_t error_counter_idx, | |
915 | struct lttng_event_notifier_group *event_notifier_group, | |
916 | struct lttng_kernel_abi_event_notifier *event_notifier_param, | |
917 | enum lttng_kernel_abi_instrumentation itype); | |
918 | ||
919 | int lttng_channel_enable(struct lttng_channel *channel); | |
920 | int lttng_channel_disable(struct lttng_channel *channel); | |
921 | int lttng_event_enable(struct lttng_kernel_event_common *event); | |
922 | int lttng_event_disable(struct lttng_kernel_event_common *event); | |
923 | ||
924 | void lttng_transport_register(struct lttng_transport *transport); | |
925 | void lttng_transport_unregister(struct lttng_transport *transport); | |
926 | ||
927 | void lttng_counter_transport_register(struct lttng_counter_transport *transport); | |
928 | void lttng_counter_transport_unregister(struct lttng_counter_transport *transport); | |
929 | ||
930 | void synchronize_trace(void); | |
931 | int lttng_abi_init(void); | |
932 | int lttng_abi_compat_old_init(void); | |
933 | void lttng_abi_exit(void); | |
934 | void lttng_abi_compat_old_exit(void); | |
935 | ||
936 | const struct lttng_kernel_event_desc *lttng_event_desc_get(const char *name); | |
937 | void lttng_event_desc_put(const struct lttng_kernel_event_desc *desc); | |
938 | int lttng_probes_init(void); | |
939 | void lttng_probes_exit(void); | |
940 | ||
941 | int lttng_metadata_output_channel(struct lttng_metadata_stream *stream, | |
942 | struct channel *chan, bool *coherent); | |
943 | ||
944 | int lttng_id_tracker_get_node_id(const struct lttng_id_hash_node *node); | |
945 | int lttng_id_tracker_empty_set(struct lttng_id_tracker *lf); | |
946 | void lttng_id_tracker_destroy(struct lttng_id_tracker *lf, bool rcu); | |
947 | int lttng_id_tracker_add(struct lttng_id_tracker *lf, int id); | |
948 | int lttng_id_tracker_del(struct lttng_id_tracker *lf, int id); | |
949 | ||
950 | int lttng_session_track_id(struct lttng_session *session, | |
951 | enum tracker_type tracker_type, int id); | |
952 | int lttng_session_untrack_id(struct lttng_session *session, | |
953 | enum tracker_type tracker_type, int id); | |
954 | ||
955 | int lttng_session_list_tracker_ids(struct lttng_session *session, | |
956 | enum tracker_type tracker_type); | |
957 | ||
958 | void lttng_clock_ref(void); | |
959 | void lttng_clock_unref(void); | |
960 | ||
961 | void lttng_free_event_filter_runtime(struct lttng_kernel_event_common *event); | |
962 | ||
963 | int lttng_probes_init(void); | |
964 | ||
965 | int lttng_logger_init(void); | |
966 | void lttng_logger_exit(void); | |
967 | ||
968 | extern int lttng_statedump_start(struct lttng_session *session); | |
969 | ||
970 | int lttng_calibrate(struct lttng_kernel_abi_calibrate *calibrate); | |
971 | ||
972 | extern const struct file_operations lttng_tracepoint_list_fops; | |
973 | extern const struct file_operations lttng_syscall_list_fops; | |
974 | ||
7207017d MD |
975 | #define lttng_kernel_static_ctx_field(_event_field, _get_size, _record, _get_value, _destroy, _priv) \ |
976 | __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_ctx_field, { \ | |
977 | .event_field = (_event_field), \ | |
978 | .get_size = (_get_size), \ | |
979 | .record = (_record), \ | |
980 | .get_value = (_get_value), \ | |
981 | .destroy = (_destroy), \ | |
982 | .priv = (_priv), \ | |
983 | }) | |
984 | ||
92bc1e23 | 985 | #endif /* _LTTNG_EVENTS_INTERNAL_H */ |