Commit | Line | Data |
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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 | ||
3a523f5b | 13 | #include <linux/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> |
149b9a9d | 18 | #include <wrapper/uprobes.h> |
2df37e95 MD |
19 | #include <lttng/cpuhotplug.h> |
20 | #include <lttng/tracer.h> | |
21 | #include <lttng/abi.h> | |
22 | #include <lttng/abi-old.h> | |
23 | #include <lttng/endian.h> | |
4e3c1b9b | 24 | |
06254b0f | 25 | #define lttng_is_signed_type(type) (((type)(-1)) < 0) |
9e7e4892 | 26 | |
a90917c3 MD |
27 | struct lttng_channel; |
28 | struct lttng_session; | |
d83004aa | 29 | struct lttng_metadata_cache; |
1c25284c | 30 | struct lib_ring_buffer_ctx; |
ba1f5986 | 31 | struct perf_event; |
833ad6a0 | 32 | struct perf_event_attr; |
3b731ab1 | 33 | struct lib_ring_buffer_config; |
4e3c1b9b | 34 | |
c0edae1d MD |
35 | /* Type description */ |
36 | ||
c0edae1d MD |
37 | enum abstract_types { |
38 | atype_integer, | |
c0edae1d | 39 | atype_string, |
ceabb767 MD |
40 | atype_enum_nestable, |
41 | atype_array_nestable, | |
42 | atype_sequence_nestable, | |
43 | atype_struct_nestable, | |
44 | atype_variant_nestable, | |
c0edae1d MD |
45 | NR_ABSTRACT_TYPES, |
46 | }; | |
47 | ||
c0edae1d | 48 | enum lttng_string_encodings { |
e0a7a7c4 MD |
49 | lttng_encode_none = 0, |
50 | lttng_encode_UTF8 = 1, | |
51 | lttng_encode_ASCII = 2, | |
c0edae1d MD |
52 | NR_STRING_ENCODINGS, |
53 | }; | |
54 | ||
d83004aa JD |
55 | enum channel_type { |
56 | PER_CPU_CHANNEL, | |
57 | METADATA_CHANNEL, | |
58 | }; | |
59 | ||
141ddf28 MD |
60 | struct lttng_enum_value { |
61 | unsigned long long value; | |
62 | unsigned int signedness:1; | |
63 | }; | |
64 | ||
c0edae1d | 65 | struct lttng_enum_entry { |
141ddf28 | 66 | struct lttng_enum_value start, end; /* start and end are inclusive */ |
c0edae1d | 67 | const char *string; |
08ad1061 PP |
68 | struct { |
69 | unsigned int is_auto:1; | |
70 | } options; | |
c0edae1d MD |
71 | }; |
72 | ||
43803cf2 MD |
73 | #define __type_integer(_type, _size, _alignment, _signedness, \ |
74 | _byte_order, _base, _encoding) \ | |
c099397a MD |
75 | { \ |
76 | .atype = atype_integer, \ | |
ceabb767 | 77 | .u.integer = \ |
c099397a | 78 | { \ |
43803cf2 MD |
79 | .size = (_size) ? : sizeof(_type) * CHAR_BIT, \ |
80 | .alignment = (_alignment) ? : lttng_alignof(_type) * CHAR_BIT, \ | |
81 | .signedness = (_signedness) >= 0 ? (_signedness) : lttng_is_signed_type(_type), \ | |
82 | .reverse_byte_order = _byte_order != __BYTE_ORDER, \ | |
e0a7a7c4 | 83 | .base = _base, \ |
64c796d8 | 84 | .encoding = lttng_encode_##_encoding, \ |
c099397a MD |
85 | }, \ |
86 | } \ | |
87 | ||
88 | struct lttng_integer_type { | |
89 | unsigned int size; /* in bits */ | |
90 | unsigned short alignment; /* in bits */ | |
9cccf98a MD |
91 | unsigned int signedness:1, |
92 | reverse_byte_order:1; | |
e0a7a7c4 MD |
93 | unsigned int base; /* 2, 8, 10, 16, for pretty print */ |
94 | enum lttng_string_encodings encoding; | |
c099397a MD |
95 | }; |
96 | ||
c0edae1d MD |
97 | struct lttng_type { |
98 | enum abstract_types atype; | |
c0edae1d | 99 | union { |
ceabb767 | 100 | struct lttng_integer_type integer; |
c0edae1d | 101 | struct { |
ceabb767 MD |
102 | enum lttng_string_encodings encoding; |
103 | } string; | |
c0edae1d | 104 | struct { |
ceabb767 MD |
105 | const struct lttng_enum_desc *desc; /* Enumeration mapping */ |
106 | const struct lttng_type *container_type; | |
107 | } enum_nestable; | |
f513b2bf | 108 | struct { |
ceabb767 MD |
109 | const struct lttng_type *elem_type; |
110 | unsigned int length; /* Num. elems. */ | |
111 | unsigned int alignment; | |
112 | } array_nestable; | |
f513b2bf | 113 | struct { |
ceabb767 MD |
114 | const char *length_name; /* Length field name. */ |
115 | const struct lttng_type *elem_type; | |
116 | unsigned int alignment; /* Alignment before elements. */ | |
117 | } sequence_nestable; | |
f513b2bf | 118 | struct { |
ceabb767 MD |
119 | unsigned int nr_fields; |
120 | const struct lttng_event_field *fields; /* Array of fields. */ | |
121 | unsigned int alignment; | |
122 | } struct_nestable; | |
65c85aa6 MD |
123 | struct { |
124 | const char *tag_name; | |
ceabb767 MD |
125 | const struct lttng_event_field *choices; /* Array of fields. */ |
126 | unsigned int nr_choices; | |
127 | unsigned int alignment; | |
128 | } variant_nestable; | |
c0edae1d | 129 | } u; |
c099397a MD |
130 | }; |
131 | ||
141ddf28 | 132 | struct lttng_enum_desc { |
c099397a | 133 | const char *name; |
c099397a | 134 | const struct lttng_enum_entry *entries; |
141ddf28 | 135 | unsigned int nr_entries; |
c099397a | 136 | }; |
c0edae1d MD |
137 | |
138 | /* Event field description */ | |
139 | ||
140 | struct lttng_event_field { | |
141 | const char *name; | |
f17701fb | 142 | struct lttng_type type; |
f127e61e | 143 | unsigned int nowrite:1, /* do not write into trace */ |
ceabb767 MD |
144 | user:1, /* fetch from user-space */ |
145 | nofilter:1; /* do not consider for filter */ | |
c0edae1d MD |
146 | }; |
147 | ||
07dfc1d0 MD |
148 | union lttng_ctx_value { |
149 | int64_t s64; | |
150 | const char *str; | |
151 | double d; | |
152 | }; | |
153 | ||
2001023e MD |
154 | /* |
155 | * We need to keep this perf counter field separately from struct | |
156 | * lttng_ctx_field because cpu hotplug needs fixed-location addresses. | |
157 | */ | |
158 | struct lttng_perf_counter_field { | |
1e367326 MD |
159 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) |
160 | struct lttng_cpuhp_node cpuhp_prepare; | |
161 | struct lttng_cpuhp_node cpuhp_online; | |
162 | #else | |
2001023e MD |
163 | struct notifier_block nb; |
164 | int hp_enable; | |
1e367326 | 165 | #endif |
2001023e MD |
166 | struct perf_event_attr *attr; |
167 | struct perf_event **e; /* per-cpu array */ | |
168 | }; | |
169 | ||
79150a49 JD |
170 | struct lttng_probe_ctx { |
171 | struct lttng_event *event; | |
172 | uint8_t interruptible; | |
173 | }; | |
174 | ||
ba1f5986 | 175 | struct lttng_ctx_field { |
8070f5c0 | 176 | struct lttng_event_field event_field; |
f1676205 | 177 | size_t (*get_size)(size_t offset); |
1474c8e2 FG |
178 | size_t (*get_size_arg)(size_t offset, struct lttng_ctx_field *field, |
179 | struct lib_ring_buffer_ctx *ctx, | |
180 | struct lttng_channel *chan); | |
f1676205 MD |
181 | void (*record)(struct lttng_ctx_field *field, |
182 | struct lib_ring_buffer_ctx *ctx, | |
a90917c3 | 183 | struct lttng_channel *chan); |
07dfc1d0 | 184 | void (*get_value)(struct lttng_ctx_field *field, |
79150a49 | 185 | struct lttng_probe_ctx *lttng_probe_ctx, |
07dfc1d0 | 186 | union lttng_ctx_value *value); |
ba1f5986 | 187 | union { |
2001023e | 188 | struct lttng_perf_counter_field *perf_counter; |
ba1f5986 | 189 | } u; |
2dccf128 | 190 | void (*destroy)(struct lttng_ctx_field *field); |
3c1a57e8 MD |
191 | /* |
192 | * Private data to keep state between get_size and record. | |
193 | * User must perform its own synchronization to protect against | |
194 | * concurrent and reentrant contexts. | |
195 | */ | |
196 | void *priv; | |
ba1f5986 MD |
197 | }; |
198 | ||
199 | struct lttng_ctx { | |
833ad6a0 | 200 | struct lttng_ctx_field *fields; |
0d1a681e | 201 | unsigned int nr_fields; |
ba1f5986 | 202 | unsigned int allocated_fields; |
a9dd15da | 203 | size_t largest_align; /* in bytes */ |
0d1a681e MD |
204 | }; |
205 | ||
206 | struct lttng_event_desc { | |
a26a7e4f MD |
207 | const char *name; /* lttng-modules name */ |
208 | const char *kname; /* Linux kernel name (tracepoints) */ | |
c0edae1d | 209 | void *probe_callback; |
0d1a681e MD |
210 | const struct lttng_event_ctx *ctx; /* context */ |
211 | const struct lttng_event_field *fields; /* event payload */ | |
c0edae1d | 212 | unsigned int nr_fields; |
dc7f600a | 213 | struct module *owner; |
c0edae1d MD |
214 | }; |
215 | ||
85a9ca7f | 216 | struct lttng_probe_desc { |
3c997079 | 217 | const char *provider; |
f7bdf4db | 218 | const struct lttng_event_desc **event_desc; |
85a9ca7f MD |
219 | unsigned int nr_events; |
220 | struct list_head head; /* chain registered probes */ | |
3c997079 MD |
221 | struct list_head lazy_init_head; |
222 | int lazy; /* lazy registration */ | |
85a9ca7f MD |
223 | }; |
224 | ||
7371f44c MD |
225 | struct lttng_krp; /* Kretprobe handling */ |
226 | ||
3c997079 MD |
227 | enum lttng_event_type { |
228 | LTTNG_TYPE_EVENT = 0, | |
229 | LTTNG_TYPE_ENABLER = 1, | |
230 | }; | |
231 | ||
07dfc1d0 MD |
232 | struct lttng_filter_bytecode_node { |
233 | struct list_head node; | |
234 | struct lttng_enabler *enabler; | |
235 | /* | |
236 | * struct lttng_kernel_filter_bytecode has var. sized array, must be | |
237 | * last field. | |
238 | */ | |
239 | struct lttng_kernel_filter_bytecode bc; | |
240 | }; | |
241 | ||
242 | /* | |
243 | * Filter return value masks. | |
244 | */ | |
245 | enum lttng_filter_ret { | |
246 | LTTNG_FILTER_DISCARD = 0, | |
247 | LTTNG_FILTER_RECORD_FLAG = (1ULL << 0), | |
248 | /* Other bits are kept for future use. */ | |
249 | }; | |
250 | ||
251 | struct lttng_bytecode_runtime { | |
252 | /* Associated bytecode */ | |
253 | struct lttng_filter_bytecode_node *bc; | |
79150a49 JD |
254 | uint64_t (*filter)(void *filter_data, struct lttng_probe_ctx *lttng_probe_ctx, |
255 | const char *filter_stack_data); | |
07dfc1d0 MD |
256 | int link_failed; |
257 | struct list_head node; /* list of bytecode runtime in event */ | |
2dfda770 | 258 | struct lttng_ctx *ctx; |
07dfc1d0 MD |
259 | }; |
260 | ||
3c997079 MD |
261 | /* |
262 | * Objects in a linked-list of enablers, owned by an event. | |
263 | */ | |
264 | struct lttng_enabler_ref { | |
265 | struct list_head node; /* enabler ref list */ | |
266 | struct lttng_enabler *ref; /* backward ref */ | |
267 | }; | |
268 | ||
3aed4dca FD |
269 | struct lttng_uprobe_handler { |
270 | struct lttng_event *event; | |
271 | loff_t offset; | |
272 | struct uprobe_consumer up_consumer; | |
273 | struct list_head node; | |
274 | }; | |
275 | ||
badfe9f5 MD |
276 | enum lttng_syscall_entryexit { |
277 | LTTNG_SYSCALL_ENTRY, | |
278 | LTTNG_SYSCALL_EXIT, | |
279 | }; | |
280 | ||
281 | enum lttng_syscall_abi { | |
282 | LTTNG_SYSCALL_ABI_NATIVE, | |
283 | LTTNG_SYSCALL_ABI_COMPAT, | |
284 | }; | |
285 | ||
85a9ca7f | 286 | /* |
a90917c3 | 287 | * lttng_event structure is referred to by the tracing fast path. It must be |
85a9ca7f MD |
288 | * kept small. |
289 | */ | |
a90917c3 | 290 | struct lttng_event { |
3c997079 | 291 | enum lttng_event_type evtype; /* First field. */ |
85a9ca7f | 292 | unsigned int id; |
a90917c3 | 293 | struct lttng_channel *chan; |
e64957da | 294 | int enabled; |
d3dbe23c | 295 | const struct lttng_event_desc *desc; |
85a9ca7f | 296 | void *filter; |
f1676205 | 297 | struct lttng_ctx *ctx; |
38d024ae | 298 | enum lttng_kernel_instrumentation instrumentation; |
d6d808f3 MD |
299 | union { |
300 | struct { | |
301 | struct kprobe kp; | |
302 | char *symbol_name; | |
303 | } kprobe; | |
7371f44c MD |
304 | struct { |
305 | struct lttng_krp *lttng_krp; | |
306 | char *symbol_name; | |
307 | } kretprobe; | |
149b9a9d | 308 | struct { |
149b9a9d | 309 | struct inode *inode; |
3aed4dca | 310 | struct list_head head; |
149b9a9d | 311 | } uprobe; |
badfe9f5 MD |
312 | struct { |
313 | char *syscall_name; | |
314 | enum lttng_syscall_entryexit entryexit; | |
315 | enum lttng_syscall_abi abi; | |
316 | } syscall; | |
d6d808f3 | 317 | } u; |
3c997079 | 318 | struct list_head list; /* Event list in session */ |
9cccf98a | 319 | unsigned int metadata_dumped:1; |
3c997079 MD |
320 | |
321 | /* Backward references: list of lttng_enabler_ref (ref to enablers) */ | |
322 | struct list_head enablers_ref_head; | |
323 | struct hlist_node hlist; /* session ht of events */ | |
324 | int registered; /* has reg'd tracepoint probe */ | |
07dfc1d0 MD |
325 | /* list of struct lttng_bytecode_runtime, sorted by seqnum */ |
326 | struct list_head bytecode_runtime_head; | |
327 | int has_enablers_without_bytecode; | |
3c997079 MD |
328 | }; |
329 | ||
dffef45d FD |
330 | // FIXME: Really similar to lttng_event above. Could those be merged ? |
331 | struct lttng_event_notifier { | |
332 | enum lttng_event_type evtype; /* First field. */ | |
333 | uint64_t user_token; | |
334 | int enabled; | |
335 | int registered; /* has reg'd tracepoint probe */ | |
336 | const struct lttng_event_desc *desc; | |
337 | void *filter; | |
338 | struct list_head list; /* event_notifier list in event_notifier group */ | |
339 | ||
340 | enum lttng_kernel_instrumentation instrumentation; | |
341 | union { | |
342 | } u; | |
343 | ||
344 | /* Backward references: list of lttng_enabler_ref (ref to enablers) */ | |
345 | struct list_head enablers_ref_head; | |
346 | struct hlist_node hlist; /* session ht of event_notifiers */ | |
347 | /* list of struct lttng_bytecode_runtime, sorted by seqnum */ | |
348 | struct list_head bytecode_runtime_head; | |
349 | int has_enablers_without_bytecode; | |
350 | ||
351 | struct lttng_event_notifier_group *group; /* Weak ref */ | |
352 | }; | |
353 | ||
3b861b22 FD |
354 | enum lttng_enabler_format_type { |
355 | LTTNG_ENABLER_FORMAT_STAR_GLOB, | |
356 | LTTNG_ENABLER_FORMAT_NAME, | |
3c997079 MD |
357 | }; |
358 | ||
359 | /* | |
360 | * Enabler field, within whatever object is enabling an event. Target of | |
361 | * backward reference. | |
362 | */ | |
363 | struct lttng_enabler { | |
364 | enum lttng_event_type evtype; /* First field. */ | |
365 | ||
3b861b22 | 366 | enum lttng_enabler_format_type format_type; |
3c997079 | 367 | |
07dfc1d0 MD |
368 | /* head list of struct lttng_ust_filter_bytecode_node */ |
369 | struct list_head filter_bytecode_head; | |
3c997079 MD |
370 | |
371 | struct lttng_kernel_event event_param; | |
b2bc0bc8 | 372 | unsigned int enabled:1; |
dffef45d FD |
373 | |
374 | uint64_t user_token; /* User-provided token. */ | |
b2bc0bc8 FD |
375 | }; |
376 | ||
377 | struct lttng_event_enabler { | |
378 | struct lttng_enabler base; | |
379 | struct list_head node; /* per-session list of enablers */ | |
3c997079 | 380 | struct lttng_channel *chan; |
2954b37c FD |
381 | /* |
382 | * Unused, but kept around to make it explicit that the tracer can do | |
383 | * it. | |
384 | */ | |
3c997079 | 385 | struct lttng_ctx *ctx; |
85a9ca7f MD |
386 | }; |
387 | ||
dffef45d FD |
388 | struct lttng_event_notifier_enabler { |
389 | struct lttng_enabler base; | |
390 | struct list_head node; /* List of event_notifier enablers */ | |
391 | struct lttng_event_notifier_group *group; | |
392 | }; | |
393 | ||
b2bc0bc8 FD |
394 | static inline |
395 | struct lttng_enabler *lttng_event_enabler_as_enabler( | |
396 | struct lttng_event_enabler *event_enabler) | |
397 | { | |
398 | return &event_enabler->base; | |
399 | } | |
400 | ||
dffef45d FD |
401 | static inline |
402 | struct lttng_enabler *lttng_event_notifier_enabler_as_enabler( | |
403 | struct lttng_event_notifier_enabler *event_notifier_enabler) | |
404 | { | |
405 | return &event_notifier_enabler->base; | |
406 | } | |
b2bc0bc8 | 407 | |
a90917c3 | 408 | struct lttng_channel_ops { |
85a9ca7f | 409 | struct channel *(*channel_create)(const char *name, |
5cf4b87c | 410 | void *priv, |
85a9ca7f MD |
411 | void *buf_addr, |
412 | size_t subbuf_size, size_t num_subbuf, | |
413 | unsigned int switch_timer_interval, | |
414 | unsigned int read_timer_interval); | |
415 | void (*channel_destroy)(struct channel *chan); | |
416 | struct lib_ring_buffer *(*buffer_read_open)(struct channel *chan); | |
f71ecafa | 417 | int (*buffer_has_read_closed_stream)(struct channel *chan); |
85a9ca7f | 418 | void (*buffer_read_close)(struct lib_ring_buffer *buf); |
4e1f08f4 | 419 | int (*event_reserve)(struct lib_ring_buffer_ctx *ctx, |
64c796d8 | 420 | uint32_t event_id); |
85a9ca7f MD |
421 | void (*event_commit)(struct lib_ring_buffer_ctx *ctx); |
422 | void (*event_write)(struct lib_ring_buffer_ctx *ctx, const void *src, | |
423 | size_t len); | |
4ea00e4f JD |
424 | void (*event_write_from_user)(struct lib_ring_buffer_ctx *ctx, |
425 | const void *src, size_t len); | |
58aa5d24 MD |
426 | void (*event_memset)(struct lib_ring_buffer_ctx *ctx, |
427 | int c, size_t len); | |
16f78f3a MD |
428 | void (*event_strcpy)(struct lib_ring_buffer_ctx *ctx, const char *src, |
429 | size_t len); | |
430 | void (*event_strcpy_from_user)(struct lib_ring_buffer_ctx *ctx, | |
431 | const char __user *src, size_t len); | |
1ec3f75a MD |
432 | /* |
433 | * packet_avail_size returns the available size in the current | |
434 | * packet. Note that the size returned is only a hint, since it | |
435 | * may change due to concurrent writes. | |
436 | */ | |
437 | size_t (*packet_avail_size)(struct channel *chan); | |
71c1d843 | 438 | wait_queue_head_t *(*get_writer_buf_wait_queue)(struct channel *chan, int cpu); |
24cedcfe MD |
439 | wait_queue_head_t *(*get_hp_wait_queue)(struct channel *chan); |
440 | int (*is_finalized)(struct channel *chan); | |
254ec7bc | 441 | int (*is_disabled)(struct channel *chan); |
3b731ab1 JD |
442 | int (*timestamp_begin) (const struct lib_ring_buffer_config *config, |
443 | struct lib_ring_buffer *bufb, | |
444 | uint64_t *timestamp_begin); | |
445 | int (*timestamp_end) (const struct lib_ring_buffer_config *config, | |
446 | struct lib_ring_buffer *bufb, | |
447 | uint64_t *timestamp_end); | |
448 | int (*events_discarded) (const struct lib_ring_buffer_config *config, | |
449 | struct lib_ring_buffer *bufb, | |
450 | uint64_t *events_discarded); | |
451 | int (*content_size) (const struct lib_ring_buffer_config *config, | |
452 | struct lib_ring_buffer *bufb, | |
453 | uint64_t *content_size); | |
454 | int (*packet_size) (const struct lib_ring_buffer_config *config, | |
455 | struct lib_ring_buffer *bufb, | |
456 | uint64_t *packet_size); | |
457 | int (*stream_id) (const struct lib_ring_buffer_config *config, | |
458 | struct lib_ring_buffer *bufb, | |
459 | uint64_t *stream_id); | |
2348ca17 JD |
460 | int (*current_timestamp) (const struct lib_ring_buffer_config *config, |
461 | struct lib_ring_buffer *bufb, | |
462 | uint64_t *ts); | |
5b3cf4f9 JD |
463 | int (*sequence_number) (const struct lib_ring_buffer_config *config, |
464 | struct lib_ring_buffer *bufb, | |
465 | uint64_t *seq); | |
5594698f JD |
466 | int (*instance_id) (const struct lib_ring_buffer_config *config, |
467 | struct lib_ring_buffer *bufb, | |
468 | uint64_t *id); | |
85a9ca7f MD |
469 | }; |
470 | ||
a90917c3 | 471 | struct lttng_transport { |
a33c9927 MD |
472 | char *name; |
473 | struct module *owner; | |
474 | struct list_head node; | |
a90917c3 | 475 | struct lttng_channel_ops ops; |
a33c9927 MD |
476 | }; |
477 | ||
80f87dd2 MD |
478 | struct lttng_syscall_filter; |
479 | ||
3c997079 MD |
480 | #define LTTNG_EVENT_HT_BITS 12 |
481 | #define LTTNG_EVENT_HT_SIZE (1U << LTTNG_EVENT_HT_BITS) | |
482 | ||
483 | struct lttng_event_ht { | |
484 | struct hlist_head table[LTTNG_EVENT_HT_SIZE]; | |
485 | }; | |
486 | ||
dffef45d FD |
487 | #define LTTNG_EVENT_NOTIFIER_HT_BITS 12 |
488 | #define LTTNG_EVENT_NOTIFIER_HT_SIZE (1U << LTTNG_EVENT_NOTIFIER_HT_BITS) | |
489 | ||
490 | struct lttng_event_notifier_ht { | |
491 | struct hlist_head table[LTTNG_EVENT_NOTIFIER_HT_SIZE]; | |
492 | }; | |
493 | ||
a90917c3 | 494 | struct lttng_channel { |
c099397a | 495 | unsigned int id; |
85a9ca7f | 496 | struct channel *chan; /* Channel buffers */ |
e64957da | 497 | int enabled; |
f1676205 | 498 | struct lttng_ctx *ctx; |
85a9ca7f | 499 | /* Event ID management */ |
a90917c3 | 500 | struct lttng_session *session; |
85a9ca7f MD |
501 | struct file *file; /* File associated to channel */ |
502 | unsigned int free_event_id; /* Next event ID to allocate */ | |
503 | struct list_head list; /* Channel list */ | |
a90917c3 MD |
504 | struct lttng_channel_ops *ops; |
505 | struct lttng_transport *transport; | |
506 | struct lttng_event **sc_table; /* for syscall tracing */ | |
507 | struct lttng_event **compat_sc_table; | |
5b7ac358 MD |
508 | struct lttng_event **sc_exit_table; /* for syscall exit tracing */ |
509 | struct lttng_event **compat_sc_exit_table; | |
a90917c3 MD |
510 | struct lttng_event *sc_unknown; /* for unknown syscalls */ |
511 | struct lttng_event *sc_compat_unknown; | |
5b7ac358 MD |
512 | struct lttng_event *sc_exit_unknown; |
513 | struct lttng_event *compat_sc_exit_unknown; | |
80f87dd2 | 514 | struct lttng_syscall_filter *sc_filter; |
9115fbdc | 515 | int header_type; /* 0: unset, 1: compact, 2: large */ |
d83004aa | 516 | enum channel_type channel_type; |
badfe9f5 | 517 | int syscall_all; |
80f87dd2 MD |
518 | unsigned int metadata_dumped:1, |
519 | sys_enter_registered:1, | |
520 | sys_exit_registered:1, | |
3c997079 | 521 | tstate:1; /* Transient enable state */ |
85a9ca7f MD |
522 | }; |
523 | ||
d83004aa JD |
524 | struct lttng_metadata_stream { |
525 | void *priv; /* Ring buffer private data */ | |
526 | struct lttng_metadata_cache *metadata_cache; | |
f613e3e6 MD |
527 | unsigned int metadata_in; /* Bytes read from the cache */ |
528 | unsigned int metadata_out; /* Bytes consumed from stream */ | |
d83004aa JD |
529 | int finalized; /* Has channel been finalized */ |
530 | wait_queue_head_t read_wait; /* Reader buffer-level wait queue */ | |
531 | struct list_head list; /* Stream list */ | |
b3b8072b | 532 | struct lttng_transport *transport; |
9616f0bf | 533 | uint64_t version; /* Current version of the metadata cache */ |
8b97fd42 | 534 | bool coherent; /* Stream in a coherent state */ |
d83004aa JD |
535 | }; |
536 | ||
114667d5 MD |
537 | #define LTTNG_DYNAMIC_LEN_STACK_SIZE 128 |
538 | ||
539 | struct lttng_dynamic_len_stack { | |
540 | size_t stack[LTTNG_DYNAMIC_LEN_STACK_SIZE]; | |
541 | size_t offset; | |
542 | }; | |
543 | ||
544 | DECLARE_PER_CPU(struct lttng_dynamic_len_stack, lttng_dynamic_len_stack); | |
e0130fab MD |
545 | |
546 | /* | |
d1f652f8 | 547 | * struct lttng_id_tracker declared in header due to deferencing of *v |
e0130fab MD |
548 | * in RCU_INITIALIZER(v). |
549 | */ | |
d1f652f8 MD |
550 | #define LTTNG_ID_HASH_BITS 6 |
551 | #define LTTNG_ID_TABLE_SIZE (1 << LTTNG_ID_HASH_BITS) | |
e0130fab | 552 | |
d1f652f8 MD |
553 | enum tracker_type { |
554 | TRACKER_PID, | |
555 | TRACKER_VPID, | |
556 | TRACKER_UID, | |
557 | TRACKER_VUID, | |
558 | TRACKER_GID, | |
559 | TRACKER_VGID, | |
560 | ||
561 | TRACKER_UNKNOWN, | |
562 | }; | |
563 | ||
564 | struct lttng_id_tracker_rcu { | |
565 | struct hlist_head id_hash[LTTNG_ID_TABLE_SIZE]; | |
566 | }; | |
567 | ||
568 | struct lttng_id_tracker { | |
569 | struct lttng_session *session; | |
570 | enum tracker_type tracker_type; | |
571 | struct lttng_id_tracker_rcu *p; /* RCU dereferenced. */ | |
e0130fab MD |
572 | }; |
573 | ||
d1f652f8 | 574 | struct lttng_id_hash_node { |
7e6f9ef6 | 575 | struct hlist_node hlist; |
d1f652f8 | 576 | int id; |
7e6f9ef6 MD |
577 | }; |
578 | ||
a90917c3 | 579 | struct lttng_session { |
85a9ca7f | 580 | int active; /* Is trace session active ? */ |
8070f5c0 | 581 | int been_active; /* Has trace session been active ? */ |
85a9ca7f MD |
582 | struct file *file; /* File associated to session */ |
583 | struct list_head chan; /* Channel list head */ | |
584 | struct list_head events; /* Event list head */ | |
585 | struct list_head list; /* Session list */ | |
c099397a | 586 | unsigned int free_chan_id; /* Next chan ID to allocate */ |
d793d5e1 | 587 | uuid_le uuid; /* Trace session unique ID */ |
d83004aa | 588 | struct lttng_metadata_cache *metadata_cache; |
d1f652f8 MD |
589 | struct lttng_id_tracker pid_tracker; |
590 | struct lttng_id_tracker vpid_tracker; | |
591 | struct lttng_id_tracker uid_tracker; | |
592 | struct lttng_id_tracker vuid_tracker; | |
593 | struct lttng_id_tracker gid_tracker; | |
594 | struct lttng_id_tracker vgid_tracker; | |
3c997079 MD |
595 | unsigned int metadata_dumped:1, |
596 | tstate:1; /* Transient enable state */ | |
b2bc0bc8 | 597 | /* List of event enablers */ |
3c997079 MD |
598 | struct list_head enablers_head; |
599 | /* Hash table of events */ | |
600 | struct lttng_event_ht events_ht; | |
7f859fbf | 601 | char name[LTTNG_KERNEL_SESSION_NAME_LEN]; |
1c88f269 | 602 | char creation_time[LTTNG_KERNEL_SESSION_CREATION_TIME_ISO8601_LEN]; |
85a9ca7f MD |
603 | }; |
604 | ||
750b05f2 FD |
605 | struct lttng_event_notifier_group { |
606 | struct file *file; /* File associated to event notifier group */ | |
607 | struct list_head node; /* event notifier group list */ | |
dffef45d FD |
608 | struct list_head enablers_head; /* List of enablers */ |
609 | struct list_head event_notifiers_head; /* List of event notifier */ | |
610 | struct lttng_event_notifier_ht event_notifiers_ht; /* Hash table of event notifiers */ | |
750b05f2 FD |
611 | struct lttng_ctx *ctx; /* Contexts for filters. */ |
612 | struct lttng_channel_ops *ops; | |
613 | struct lttng_transport *transport; | |
614 | struct channel *chan; /* Ring buffer channel for event notifier group. */ | |
615 | struct lib_ring_buffer *buf; /* Ring buffer for event notifier group. */ | |
616 | }; | |
617 | ||
d83004aa JD |
618 | struct lttng_metadata_cache { |
619 | char *data; /* Metadata cache */ | |
620 | unsigned int cache_alloc; /* Metadata allocated size (bytes) */ | |
621 | unsigned int metadata_written; /* Number of bytes written in metadata cache */ | |
3e75e2a7 | 622 | atomic_t producing; /* Metadata being produced (incomplete) */ |
d83004aa JD |
623 | struct kref refcount; /* Metadata cache usage */ |
624 | struct list_head metadata_stream; /* Metadata stream list */ | |
a36580d5 | 625 | uuid_le uuid; /* Trace session unique ID (copy) */ |
9616f0bf JD |
626 | struct mutex lock; /* Produce/consume lock */ |
627 | uint64_t version; /* Current version of the metadata */ | |
d83004aa JD |
628 | }; |
629 | ||
3c997079 MD |
630 | void lttng_lock_sessions(void); |
631 | void lttng_unlock_sessions(void); | |
632 | ||
633 | struct list_head *lttng_get_probe_list_head(void); | |
634 | ||
b2bc0bc8 FD |
635 | struct lttng_event_enabler *lttng_event_enabler_create( |
636 | enum lttng_enabler_format_type format_type, | |
3c997079 MD |
637 | struct lttng_kernel_event *event_param, |
638 | struct lttng_channel *chan); | |
639 | ||
b2bc0bc8 FD |
640 | int lttng_event_enabler_enable(struct lttng_event_enabler *event_enabler); |
641 | int lttng_event_enabler_disable(struct lttng_event_enabler *event_enabler); | |
dffef45d FD |
642 | struct lttng_event_notifier_enabler *lttng_event_notifier_enabler_create( |
643 | struct lttng_event_notifier_group *event_notifier_group, | |
644 | enum lttng_enabler_format_type format_type, | |
645 | struct lttng_kernel_event_notifier *event_notifier_param); | |
646 | ||
647 | int lttng_event_notifier_enabler_enable( | |
648 | struct lttng_event_notifier_enabler *event_notifier_enabler); | |
649 | int lttng_event_notifier_enabler_disable( | |
650 | struct lttng_event_notifier_enabler *event_notifier_enabler); | |
3c997079 MD |
651 | int lttng_fix_pending_events(void); |
652 | int lttng_session_active(void); | |
653 | ||
a90917c3 MD |
654 | struct lttng_session *lttng_session_create(void); |
655 | int lttng_session_enable(struct lttng_session *session); | |
656 | int lttng_session_disable(struct lttng_session *session); | |
657 | void lttng_session_destroy(struct lttng_session *session); | |
9616f0bf | 658 | int lttng_session_metadata_regenerate(struct lttng_session *session); |
601252cf | 659 | int lttng_session_statedump(struct lttng_session *session); |
d83004aa | 660 | void metadata_cache_destroy(struct kref *kref); |
4e3c1b9b | 661 | |
750b05f2 FD |
662 | struct lttng_event_notifier_group *lttng_event_notifier_group_create(void); |
663 | void lttng_event_notifier_group_destroy( | |
664 | struct lttng_event_notifier_group *event_notifier_group); | |
665 | ||
a90917c3 | 666 | struct lttng_channel *lttng_channel_create(struct lttng_session *session, |
5dbbdb43 MD |
667 | const char *transport_name, |
668 | void *buf_addr, | |
669 | size_t subbuf_size, size_t num_subbuf, | |
670 | unsigned int switch_timer_interval, | |
d83004aa JD |
671 | unsigned int read_timer_interval, |
672 | enum channel_type channel_type); | |
a90917c3 | 673 | struct lttng_channel *lttng_global_channel_create(struct lttng_session *session, |
4e3c1b9b MD |
674 | int overwrite, void *buf_addr, |
675 | size_t subbuf_size, size_t num_subbuf, | |
676 | unsigned int switch_timer_interval, | |
677 | unsigned int read_timer_interval); | |
4e3c1b9b | 678 | |
d83004aa | 679 | void lttng_metadata_channel_destroy(struct lttng_channel *chan); |
a90917c3 | 680 | struct lttng_event *lttng_event_create(struct lttng_channel *chan, |
3c997079 MD |
681 | struct lttng_kernel_event *event_param, |
682 | void *filter, | |
683 | const struct lttng_event_desc *event_desc, | |
684 | enum lttng_kernel_instrumentation itype); | |
33a39a3c MD |
685 | struct lttng_event *_lttng_event_create(struct lttng_channel *chan, |
686 | struct lttng_kernel_event *event_param, | |
687 | void *filter, | |
688 | const struct lttng_event_desc *event_desc, | |
689 | enum lttng_kernel_instrumentation itype); | |
6dccd6c1 JD |
690 | struct lttng_event *lttng_event_compat_old_create(struct lttng_channel *chan, |
691 | struct lttng_kernel_old_event *old_event_param, | |
692 | void *filter, | |
693 | const struct lttng_event_desc *internal_desc); | |
c0e31d2e | 694 | |
dffef45d FD |
695 | struct lttng_event_notifier *lttng_event_notifier_create( |
696 | const struct lttng_event_desc *event_notifier_desc, | |
697 | uint64_t id, | |
698 | struct lttng_event_notifier_group *event_notifier_group, | |
699 | struct lttng_kernel_event_notifier *event_notifier_param, | |
700 | void *filter, | |
701 | enum lttng_kernel_instrumentation itype); | |
702 | struct lttng_event_notifier *_lttng_event_notifier_create( | |
703 | const struct lttng_event_desc *event_notifier_desc, | |
704 | uint64_t id, | |
705 | struct lttng_event_notifier_group *event_notifier_group, | |
706 | struct lttng_kernel_event_notifier *event_notifier_param, | |
707 | void *filter, | |
708 | enum lttng_kernel_instrumentation itype); | |
709 | ||
a90917c3 MD |
710 | int lttng_channel_enable(struct lttng_channel *channel); |
711 | int lttng_channel_disable(struct lttng_channel *channel); | |
712 | int lttng_event_enable(struct lttng_event *event); | |
713 | int lttng_event_disable(struct lttng_event *event); | |
e64957da | 714 | |
a90917c3 MD |
715 | void lttng_transport_register(struct lttng_transport *transport); |
716 | void lttng_transport_unregister(struct lttng_transport *transport); | |
11b5a3c2 | 717 | |
360f38ea | 718 | void synchronize_trace(void); |
80996790 | 719 | int lttng_abi_init(void); |
6dccd6c1 | 720 | int lttng_abi_compat_old_init(void); |
80996790 | 721 | void lttng_abi_exit(void); |
6dccd6c1 | 722 | void lttng_abi_compat_old_exit(void); |
1c25284c | 723 | |
a90917c3 MD |
724 | int lttng_probe_register(struct lttng_probe_desc *desc); |
725 | void lttng_probe_unregister(struct lttng_probe_desc *desc); | |
0bcedee9 FD |
726 | const struct lttng_event_desc *lttng_event_desc_get(const char *name); |
727 | void lttng_event_desc_put(const struct lttng_event_desc *desc); | |
a90917c3 MD |
728 | int lttng_probes_init(void); |
729 | void lttng_probes_exit(void); | |
1ec65de1 | 730 | |
b3b8072b | 731 | int lttng_metadata_output_channel(struct lttng_metadata_stream *stream, |
8b97fd42 | 732 | struct channel *chan, bool *coherent); |
d83004aa | 733 | |
d1f652f8 MD |
734 | int lttng_id_tracker_get_node_id(const struct lttng_id_hash_node *node); |
735 | int lttng_id_tracker_empty_set(struct lttng_id_tracker *lf); | |
736 | void lttng_id_tracker_destroy(struct lttng_id_tracker *lf, bool rcu); | |
737 | bool lttng_id_tracker_lookup(struct lttng_id_tracker_rcu *p, int id); | |
738 | int lttng_id_tracker_add(struct lttng_id_tracker *lf, int id); | |
739 | int lttng_id_tracker_del(struct lttng_id_tracker *lf, int id); | |
e0130fab | 740 | |
d1f652f8 MD |
741 | int lttng_session_track_id(struct lttng_session *session, |
742 | enum tracker_type tracker_type, int id); | |
743 | int lttng_session_untrack_id(struct lttng_session *session, | |
744 | enum tracker_type tracker_type, int id); | |
e0130fab | 745 | |
d1f652f8 MD |
746 | int lttng_session_list_tracker_ids(struct lttng_session *session, |
747 | enum tracker_type tracker_type); | |
7e6f9ef6 | 748 | |
2754583e MD |
749 | void lttng_clock_ref(void); |
750 | void lttng_clock_unref(void); | |
751 | ||
3a523f5b | 752 | #if defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS) |
a90917c3 MD |
753 | int lttng_syscalls_register(struct lttng_channel *chan, void *filter); |
754 | int lttng_syscalls_unregister(struct lttng_channel *chan); | |
badfe9f5 | 755 | int lttng_syscalls_destroy(struct lttng_channel *chan); |
80f87dd2 | 756 | int lttng_syscall_filter_enable(struct lttng_channel *chan, |
badfe9f5 | 757 | struct lttng_event *event); |
80f87dd2 | 758 | int lttng_syscall_filter_disable(struct lttng_channel *chan, |
badfe9f5 | 759 | struct lttng_event *event); |
12e579db MD |
760 | long lttng_channel_syscall_mask(struct lttng_channel *channel, |
761 | struct lttng_kernel_syscall_mask __user *usyscall_mask); | |
1ec65de1 | 762 | #else |
a90917c3 | 763 | static inline int lttng_syscalls_register(struct lttng_channel *chan, void *filter) |
1ec65de1 MD |
764 | { |
765 | return -ENOSYS; | |
766 | } | |
767 | ||
a90917c3 | 768 | static inline int lttng_syscalls_unregister(struct lttng_channel *chan) |
1ec65de1 MD |
769 | { |
770 | return 0; | |
771 | } | |
80f87dd2 | 772 | |
badfe9f5 MD |
773 | static inline int lttng_syscalls_destroy(struct lttng_channel *chan) |
774 | { | |
775 | return 0; | |
776 | } | |
777 | ||
f127e61e | 778 | static inline int lttng_syscall_filter_enable(struct lttng_channel *chan, |
badfe9f5 | 779 | struct lttng_event *event); |
80f87dd2 MD |
780 | { |
781 | return -ENOSYS; | |
782 | } | |
783 | ||
f127e61e | 784 | static inline int lttng_syscall_filter_disable(struct lttng_channel *chan, |
badfe9f5 | 785 | struct lttng_event *event); |
80f87dd2 MD |
786 | { |
787 | return -ENOSYS; | |
788 | } | |
12e579db | 789 | |
f127e61e | 790 | static inline long lttng_channel_syscall_mask(struct lttng_channel *channel, |
12e579db MD |
791 | struct lttng_kernel_syscall_mask __user *usyscall_mask) |
792 | { | |
793 | return -ENOSYS; | |
794 | } | |
dffef45d | 795 | |
1ec65de1 MD |
796 | #endif |
797 | ||
07dfc1d0 | 798 | void lttng_filter_sync_state(struct lttng_bytecode_runtime *runtime); |
b2bc0bc8 | 799 | int lttng_event_enabler_attach_bytecode(struct lttng_event_enabler *event_enabler, |
07dfc1d0 | 800 | struct lttng_kernel_filter_bytecode __user *bytecode); |
dffef45d FD |
801 | int lttng_event_notifier_enabler_attach_bytecode( |
802 | struct lttng_event_notifier_enabler *event_notifier_enabler, | |
803 | struct lttng_kernel_filter_bytecode __user *bytecode); | |
2dfda770 FD |
804 | |
805 | void lttng_enabler_link_bytecode(const struct lttng_event_desc *event_desc, | |
806 | struct lttng_ctx *ctx, | |
807 | struct list_head *bytecode_runtime_head, | |
808 | struct lttng_enabler *enabler); | |
07dfc1d0 | 809 | |
114667d5 MD |
810 | int lttng_probes_init(void); |
811 | ||
07dfc1d0 MD |
812 | extern struct lttng_ctx *lttng_static_ctx; |
813 | ||
814 | int lttng_context_init(void); | |
815 | void lttng_context_exit(void); | |
2dccf128 | 816 | struct lttng_ctx_field *lttng_append_context(struct lttng_ctx **ctx); |
c02eb859 MD |
817 | ssize_t lttng_append_context_index(struct lttng_ctx **ctx_p); |
818 | struct lttng_ctx_field *lttng_get_context_field_from_index(struct lttng_ctx *ctx, | |
819 | size_t index); | |
a9dd15da | 820 | void lttng_context_update(struct lttng_ctx *ctx); |
44252f0f | 821 | int lttng_find_context(struct lttng_ctx *ctx, const char *name); |
07dfc1d0 | 822 | int lttng_get_context_index(struct lttng_ctx *ctx, const char *name); |
8289661d MD |
823 | void lttng_remove_context_field(struct lttng_ctx **ctx, |
824 | struct lttng_ctx_field *field); | |
c02eb859 | 825 | void lttng_remove_context_field_index(struct lttng_ctx **ctx_p, size_t index); |
2dccf128 | 826 | void lttng_destroy_context(struct lttng_ctx *ctx); |
8070f5c0 | 827 | int lttng_add_pid_to_ctx(struct lttng_ctx **ctx); |
b3699d90 | 828 | int lttng_add_cpu_id_to_ctx(struct lttng_ctx **ctx); |
a2563e83 | 829 | int lttng_add_procname_to_ctx(struct lttng_ctx **ctx); |
a8ad3613 | 830 | int lttng_add_prio_to_ctx(struct lttng_ctx **ctx); |
53f1f0ca | 831 | int lttng_add_nice_to_ctx(struct lttng_ctx **ctx); |
b64bc438 MD |
832 | int lttng_add_vpid_to_ctx(struct lttng_ctx **ctx); |
833 | int lttng_add_tid_to_ctx(struct lttng_ctx **ctx); | |
834 | int lttng_add_vtid_to_ctx(struct lttng_ctx **ctx); | |
835 | int lttng_add_ppid_to_ctx(struct lttng_ctx **ctx); | |
836 | int lttng_add_vppid_to_ctx(struct lttng_ctx **ctx); | |
975da2c0 | 837 | int lttng_add_hostname_to_ctx(struct lttng_ctx **ctx); |
79150a49 JD |
838 | int lttng_add_interruptible_to_ctx(struct lttng_ctx **ctx); |
839 | int lttng_add_need_reschedule_to_ctx(struct lttng_ctx **ctx); | |
840 | #if defined(CONFIG_PREEMPT_RT_FULL) || defined(CONFIG_PREEMPT) | |
841 | int lttng_add_preemptible_to_ctx(struct lttng_ctx **ctx); | |
842 | #else | |
843 | static inline | |
844 | int lttng_add_preemptible_to_ctx(struct lttng_ctx **ctx) | |
845 | { | |
846 | return -ENOSYS; | |
847 | } | |
848 | #endif | |
849 | #ifdef CONFIG_PREEMPT_RT_FULL | |
850 | int lttng_add_migratable_to_ctx(struct lttng_ctx **ctx); | |
851 | #else | |
852 | static inline | |
853 | int lttng_add_migratable_to_ctx(struct lttng_ctx **ctx) | |
854 | { | |
855 | return -ENOSYS; | |
856 | } | |
857 | #endif | |
2fa2d39a FG |
858 | |
859 | int lttng_add_callstack_to_ctx(struct lttng_ctx **ctx, int type); | |
860 | ||
a6cf40a4 MJ |
861 | #if defined(CONFIG_CGROUPS) && \ |
862 | ((LINUX_VERSION_CODE >= KERNEL_VERSION(4,6,0)) || \ | |
863 | LTTNG_UBUNTU_KERNEL_RANGE(4,4,0,0, 4,5,0,0)) | |
864 | int lttng_add_cgroup_ns_to_ctx(struct lttng_ctx **ctx); | |
865 | #else | |
866 | static inline | |
867 | int lttng_add_cgroup_ns_to_ctx(struct lttng_ctx **ctx) | |
868 | { | |
869 | return -ENOSYS; | |
870 | } | |
871 | #endif | |
872 | ||
873 | #if defined(CONFIG_IPC_NS) && \ | |
874 | (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) | |
875 | int lttng_add_ipc_ns_to_ctx(struct lttng_ctx **ctx); | |
876 | #else | |
877 | static inline | |
878 | int lttng_add_ipc_ns_to_ctx(struct lttng_ctx **ctx) | |
879 | { | |
880 | return -ENOSYS; | |
881 | } | |
882 | #endif | |
883 | ||
884 | #if !defined(LTTNG_MNT_NS_MISSING_HEADER) && \ | |
885 | (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) | |
886 | int lttng_add_mnt_ns_to_ctx(struct lttng_ctx **ctx); | |
887 | #else | |
888 | static inline | |
889 | int lttng_add_mnt_ns_to_ctx(struct lttng_ctx **ctx) | |
890 | { | |
891 | return -ENOSYS; | |
892 | } | |
893 | #endif | |
894 | ||
895 | #if defined(CONFIG_NET_NS) && \ | |
896 | (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) | |
897 | int lttng_add_net_ns_to_ctx(struct lttng_ctx **ctx); | |
898 | #else | |
899 | static inline | |
900 | int lttng_add_net_ns_to_ctx(struct lttng_ctx **ctx) | |
901 | { | |
902 | return -ENOSYS; | |
903 | } | |
904 | #endif | |
905 | ||
906 | #if defined(CONFIG_PID_NS) && \ | |
907 | (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) | |
908 | int lttng_add_pid_ns_to_ctx(struct lttng_ctx **ctx); | |
909 | #else | |
910 | static inline | |
911 | int lttng_add_pid_ns_to_ctx(struct lttng_ctx **ctx) | |
912 | { | |
913 | return -ENOSYS; | |
914 | } | |
915 | #endif | |
916 | ||
917 | #if defined(CONFIG_USER_NS) && \ | |
918 | (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) | |
919 | int lttng_add_user_ns_to_ctx(struct lttng_ctx **ctx); | |
920 | #else | |
921 | static inline | |
922 | int lttng_add_user_ns_to_ctx(struct lttng_ctx **ctx) | |
923 | { | |
924 | return -ENOSYS; | |
925 | } | |
926 | #endif | |
927 | ||
928 | #if defined(CONFIG_UTS_NS) && \ | |
929 | (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) | |
930 | int lttng_add_uts_ns_to_ctx(struct lttng_ctx **ctx); | |
931 | #else | |
932 | static inline | |
933 | int lttng_add_uts_ns_to_ctx(struct lttng_ctx **ctx) | |
934 | { | |
935 | return -ENOSYS; | |
936 | } | |
937 | #endif | |
938 | ||
876e2e92 MJ |
939 | #if defined(CONFIG_TIME_NS) && \ |
940 | (LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0)) | |
941 | int lttng_add_time_ns_to_ctx(struct lttng_ctx **ctx); | |
942 | #else | |
943 | static inline | |
944 | int lttng_add_time_ns_to_ctx(struct lttng_ctx **ctx) | |
945 | { | |
946 | return -ENOSYS; | |
947 | } | |
948 | #endif | |
949 | ||
dc923e75 MJ |
950 | int lttng_add_uid_to_ctx(struct lttng_ctx **ctx); |
951 | int lttng_add_euid_to_ctx(struct lttng_ctx **ctx); | |
952 | int lttng_add_suid_to_ctx(struct lttng_ctx **ctx); | |
953 | int lttng_add_gid_to_ctx(struct lttng_ctx **ctx); | |
954 | int lttng_add_egid_to_ctx(struct lttng_ctx **ctx); | |
955 | int lttng_add_sgid_to_ctx(struct lttng_ctx **ctx); | |
956 | int lttng_add_vuid_to_ctx(struct lttng_ctx **ctx); | |
957 | int lttng_add_veuid_to_ctx(struct lttng_ctx **ctx); | |
958 | int lttng_add_vsuid_to_ctx(struct lttng_ctx **ctx); | |
959 | int lttng_add_vgid_to_ctx(struct lttng_ctx **ctx); | |
960 | int lttng_add_vegid_to_ctx(struct lttng_ctx **ctx); | |
961 | int lttng_add_vsgid_to_ctx(struct lttng_ctx **ctx); | |
962 | ||
8a3af9ee | 963 | #if defined(CONFIG_PERF_EVENTS) |
c24a0d71 MD |
964 | int lttng_add_perf_counter_to_ctx(uint32_t type, |
965 | uint64_t config, | |
966 | const char *name, | |
967 | struct lttng_ctx **ctx); | |
1e367326 MD |
968 | int lttng_cpuhp_perf_counter_online(unsigned int cpu, |
969 | struct lttng_cpuhp_node *node); | |
970 | int lttng_cpuhp_perf_counter_dead(unsigned int cpu, | |
971 | struct lttng_cpuhp_node *node); | |
1d443b34 MD |
972 | #else |
973 | static inline | |
974 | int lttng_add_perf_counter_to_ctx(uint32_t type, | |
975 | uint64_t config, | |
976 | const char *name, | |
977 | struct lttng_ctx **ctx) | |
978 | { | |
979 | return -ENOSYS; | |
980 | } | |
1e367326 MD |
981 | static inline |
982 | int lttng_cpuhp_perf_counter_online(unsigned int cpu, | |
983 | struct lttng_cpuhp_node *node) | |
984 | { | |
985 | return 0; | |
986 | } | |
987 | static inline | |
988 | int lttng_cpuhp_perf_counter_dead(unsigned int cpu, | |
989 | struct lttng_cpuhp_node *node) | |
990 | { | |
991 | return 0; | |
992 | } | |
1d443b34 | 993 | #endif |
02119ee5 | 994 | |
0c956676 MD |
995 | int lttng_logger_init(void); |
996 | void lttng_logger_exit(void); | |
997 | ||
c337ddc2 MD |
998 | extern int lttng_statedump_start(struct lttng_session *session); |
999 | ||
acd614cc | 1000 | #ifdef CONFIG_KPROBES |
f17701fb MD |
1001 | int lttng_kprobes_register(const char *name, |
1002 | const char *symbol_name, | |
1003 | uint64_t offset, | |
1004 | uint64_t addr, | |
a90917c3 MD |
1005 | struct lttng_event *event); |
1006 | void lttng_kprobes_unregister(struct lttng_event *event); | |
1007 | void lttng_kprobes_destroy_private(struct lttng_event *event); | |
acd614cc MD |
1008 | #else |
1009 | static inline | |
1010 | int lttng_kprobes_register(const char *name, | |
1011 | const char *symbol_name, | |
1012 | uint64_t offset, | |
1013 | uint64_t addr, | |
a90917c3 | 1014 | struct lttng_event *event) |
acd614cc MD |
1015 | { |
1016 | return -ENOSYS; | |
1017 | } | |
1018 | ||
25f53c39 | 1019 | static inline |
a90917c3 | 1020 | void lttng_kprobes_unregister(struct lttng_event *event) |
acd614cc MD |
1021 | { |
1022 | } | |
edeb3137 MD |
1023 | |
1024 | static inline | |
a90917c3 | 1025 | void lttng_kprobes_destroy_private(struct lttng_event *event) |
edeb3137 MD |
1026 | { |
1027 | } | |
acd614cc | 1028 | #endif |
d6d808f3 | 1029 | |
3aed4dca FD |
1030 | int lttng_event_add_callsite(struct lttng_event *event, |
1031 | struct lttng_kernel_event_callsite *callsite); | |
e33fc900 | 1032 | |
149b9a9d YB |
1033 | #ifdef CONFIG_UPROBES |
1034 | int lttng_uprobes_register(const char *name, | |
3aed4dca FD |
1035 | int fd, struct lttng_event *event); |
1036 | int lttng_uprobes_add_callsite(struct lttng_event *event, | |
1037 | struct lttng_kernel_event_callsite *callsite); | |
149b9a9d YB |
1038 | void lttng_uprobes_unregister(struct lttng_event *event); |
1039 | void lttng_uprobes_destroy_private(struct lttng_event *event); | |
1040 | #else | |
1041 | static inline | |
1042 | int lttng_uprobes_register(const char *name, | |
3aed4dca FD |
1043 | int fd, struct lttng_event *event) |
1044 | { | |
1045 | return -ENOSYS; | |
1046 | } | |
1047 | ||
1048 | static inline | |
1049 | int lttng_uprobes_add_callsite(struct lttng_event *event, | |
e33fc900 | 1050 | struct lttng_kernel_event_callsite *callsite) |
149b9a9d YB |
1051 | { |
1052 | return -ENOSYS; | |
1053 | } | |
1054 | ||
1055 | static inline | |
1056 | void lttng_uprobes_unregister(struct lttng_event *event) | |
1057 | { | |
1058 | } | |
1059 | ||
1060 | static inline | |
1061 | void lttng_uprobes_destroy_private(struct lttng_event *event) | |
1062 | { | |
1063 | } | |
1064 | #endif | |
1065 | ||
7371f44c MD |
1066 | #ifdef CONFIG_KRETPROBES |
1067 | int lttng_kretprobes_register(const char *name, | |
1068 | const char *symbol_name, | |
1069 | uint64_t offset, | |
1070 | uint64_t addr, | |
a90917c3 MD |
1071 | struct lttng_event *event_entry, |
1072 | struct lttng_event *event_exit); | |
1073 | void lttng_kretprobes_unregister(struct lttng_event *event); | |
1074 | void lttng_kretprobes_destroy_private(struct lttng_event *event); | |
a0493bef MD |
1075 | int lttng_kretprobes_event_enable_state(struct lttng_event *event, |
1076 | int enable); | |
7371f44c MD |
1077 | #else |
1078 | static inline | |
1079 | int lttng_kretprobes_register(const char *name, | |
1080 | const char *symbol_name, | |
1081 | uint64_t offset, | |
1082 | uint64_t addr, | |
a90917c3 MD |
1083 | struct lttng_event *event_entry, |
1084 | struct lttng_event *event_exit) | |
7371f44c MD |
1085 | { |
1086 | return -ENOSYS; | |
1087 | } | |
1088 | ||
1089 | static inline | |
a90917c3 | 1090 | void lttng_kretprobes_unregister(struct lttng_event *event) |
7371f44c MD |
1091 | { |
1092 | } | |
1093 | ||
1094 | static inline | |
a90917c3 | 1095 | void lttng_kretprobes_destroy_private(struct lttng_event *event) |
7371f44c MD |
1096 | { |
1097 | } | |
a0493bef MD |
1098 | |
1099 | static inline | |
1100 | int lttng_kretprobes_event_enable_state(struct lttng_event *event, | |
1101 | int enable) | |
1102 | { | |
1103 | return -ENOSYS; | |
1104 | } | |
7371f44c MD |
1105 | #endif |
1106 | ||
3db41b2c | 1107 | int lttng_calibrate(struct lttng_kernel_calibrate *calibrate); |
57105fc2 | 1108 | |
271b6681 | 1109 | extern const struct file_operations lttng_tracepoint_list_fops; |
2d2464bd | 1110 | extern const struct file_operations lttng_syscall_list_fops; |
271b6681 | 1111 | |
ef200626 | 1112 | #define TRACEPOINT_HAS_DATA_ARG |
ef200626 | 1113 | |
ceabb767 MD |
1114 | static inline bool lttng_is_bytewise_integer(const struct lttng_type *type) |
1115 | { | |
1116 | if (type->atype != atype_integer) | |
1117 | return false; | |
1118 | switch (type->u.integer.size) { | |
1119 | case 8: /* Fall-through. */ | |
1120 | case 16: /* Fall-through. */ | |
1121 | case 32: /* Fall-through. */ | |
1122 | case 64: | |
1123 | break; | |
1124 | default: | |
1125 | return false; | |
1126 | } | |
1127 | return true; | |
1128 | } | |
1129 | ||
a90917c3 | 1130 | #endif /* _LTTNG_EVENTS_H */ |