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a90917c3 MD |
1 | #ifndef _LTTNG_EVENTS_H |
2 | #define _LTTNG_EVENTS_H | |
11b5a3c2 | 3 | |
4e3c1b9b | 4 | /* |
a90917c3 | 5 | * lttng-events.h |
4e3c1b9b | 6 | * |
4e3c1b9b | 7 | * Holds LTTng per-session event registry. |
17baffe2 | 8 | * |
886d51a3 MD |
9 | * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
10 | * | |
11 | * This library is free software; you can redistribute it and/or | |
12 | * modify it under the terms of the GNU Lesser General Public | |
13 | * License as published by the Free Software Foundation; only | |
14 | * version 2.1 of the License. | |
15 | * | |
16 | * This library is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
19 | * Lesser General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU Lesser General Public | |
22 | * License along with this library; if not, write to the Free Software | |
23 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
4e3c1b9b MD |
24 | */ |
25 | ||
3a523f5b | 26 | #include <linux/version.h> |
4e3c1b9b | 27 | #include <linux/list.h> |
d6d808f3 | 28 | #include <linux/kprobes.h> |
d83004aa | 29 | #include <linux/kref.h> |
a864fb02 | 30 | #include "wrapper/uuid.h" |
e8951e63 | 31 | #include "lttng-abi.h" |
6dccd6c1 | 32 | #include "lttng-abi-old.h" |
4e3c1b9b | 33 | |
06254b0f | 34 | #define lttng_is_signed_type(type) (((type)(-1)) < 0) |
9e7e4892 | 35 | |
a90917c3 MD |
36 | struct lttng_channel; |
37 | struct lttng_session; | |
d83004aa | 38 | struct lttng_metadata_cache; |
1c25284c | 39 | struct lib_ring_buffer_ctx; |
ba1f5986 | 40 | struct perf_event; |
833ad6a0 | 41 | struct perf_event_attr; |
3b731ab1 | 42 | struct lib_ring_buffer_config; |
4e3c1b9b | 43 | |
c0edae1d MD |
44 | /* Type description */ |
45 | ||
46 | /* Update the astract_types name table in lttng-types.c along with this enum */ | |
47 | enum abstract_types { | |
48 | atype_integer, | |
49 | atype_enum, | |
50 | atype_array, | |
51 | atype_sequence, | |
52 | atype_string, | |
53 | NR_ABSTRACT_TYPES, | |
54 | }; | |
55 | ||
56 | /* Update the string_encodings name table in lttng-types.c along with this enum */ | |
57 | enum lttng_string_encodings { | |
e0a7a7c4 MD |
58 | lttng_encode_none = 0, |
59 | lttng_encode_UTF8 = 1, | |
60 | lttng_encode_ASCII = 2, | |
c0edae1d MD |
61 | NR_STRING_ENCODINGS, |
62 | }; | |
63 | ||
d83004aa JD |
64 | enum channel_type { |
65 | PER_CPU_CHANNEL, | |
66 | METADATA_CHANNEL, | |
67 | }; | |
68 | ||
c0edae1d MD |
69 | struct lttng_enum_entry { |
70 | unsigned long long start, end; /* start and end are inclusive */ | |
71 | const char *string; | |
72 | }; | |
73 | ||
43803cf2 MD |
74 | #define __type_integer(_type, _size, _alignment, _signedness, \ |
75 | _byte_order, _base, _encoding) \ | |
c099397a MD |
76 | { \ |
77 | .atype = atype_integer, \ | |
78 | .u.basic.integer = \ | |
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 | ||
98 | union _lttng_basic_type { | |
99 | struct lttng_integer_type integer; | |
100 | struct { | |
101 | const char *name; | |
102 | } enumeration; | |
103 | struct { | |
104 | enum lttng_string_encodings encoding; | |
105 | } string; | |
106 | }; | |
107 | ||
108 | struct lttng_basic_type { | |
109 | enum abstract_types atype; | |
110 | union { | |
111 | union _lttng_basic_type basic; | |
112 | } u; | |
c0edae1d MD |
113 | }; |
114 | ||
115 | struct lttng_type { | |
116 | enum abstract_types atype; | |
c0edae1d | 117 | union { |
c099397a | 118 | union _lttng_basic_type basic; |
c0edae1d | 119 | struct { |
c099397a | 120 | struct lttng_basic_type elem_type; |
c0edae1d | 121 | unsigned int length; /* num. elems. */ |
43803cf2 | 122 | unsigned int elem_alignment; /* alignment override */ |
c0edae1d MD |
123 | } array; |
124 | struct { | |
c099397a MD |
125 | struct lttng_basic_type length_type; |
126 | struct lttng_basic_type elem_type; | |
43803cf2 | 127 | unsigned int elem_alignment; /* alignment override */ |
c0edae1d | 128 | } sequence; |
c0edae1d | 129 | } u; |
c099397a MD |
130 | }; |
131 | ||
132 | struct lttng_enum { | |
133 | const char *name; | |
134 | struct lttng_type container_type; | |
135 | const struct lttng_enum_entry *entries; | |
136 | unsigned int len; | |
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 MD |
144 | unsigned int nowrite:1, /* do not write into trace */ |
145 | user:1; /* fetch from user-space */ | |
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 { | |
159 | struct notifier_block nb; | |
160 | int hp_enable; | |
161 | struct perf_event_attr *attr; | |
162 | struct perf_event **e; /* per-cpu array */ | |
163 | }; | |
164 | ||
ba1f5986 | 165 | struct lttng_ctx_field { |
8070f5c0 | 166 | struct lttng_event_field event_field; |
f1676205 MD |
167 | size_t (*get_size)(size_t offset); |
168 | void (*record)(struct lttng_ctx_field *field, | |
169 | struct lib_ring_buffer_ctx *ctx, | |
a90917c3 | 170 | struct lttng_channel *chan); |
07dfc1d0 MD |
171 | void (*get_value)(struct lttng_ctx_field *field, |
172 | union lttng_ctx_value *value); | |
ba1f5986 | 173 | union { |
2001023e | 174 | struct lttng_perf_counter_field *perf_counter; |
ba1f5986 | 175 | } u; |
2dccf128 | 176 | void (*destroy)(struct lttng_ctx_field *field); |
ba1f5986 MD |
177 | }; |
178 | ||
179 | struct lttng_ctx { | |
833ad6a0 | 180 | struct lttng_ctx_field *fields; |
0d1a681e | 181 | unsigned int nr_fields; |
ba1f5986 | 182 | unsigned int allocated_fields; |
a9dd15da | 183 | size_t largest_align; /* in bytes */ |
0d1a681e MD |
184 | }; |
185 | ||
186 | struct lttng_event_desc { | |
a26a7e4f MD |
187 | const char *name; /* lttng-modules name */ |
188 | const char *kname; /* Linux kernel name (tracepoints) */ | |
c0edae1d | 189 | void *probe_callback; |
0d1a681e MD |
190 | const struct lttng_event_ctx *ctx; /* context */ |
191 | const struct lttng_event_field *fields; /* event payload */ | |
c0edae1d | 192 | unsigned int nr_fields; |
dc7f600a | 193 | struct module *owner; |
c0edae1d MD |
194 | }; |
195 | ||
85a9ca7f | 196 | struct lttng_probe_desc { |
3c997079 | 197 | const char *provider; |
f7bdf4db | 198 | const struct lttng_event_desc **event_desc; |
85a9ca7f MD |
199 | unsigned int nr_events; |
200 | struct list_head head; /* chain registered probes */ | |
3c997079 MD |
201 | struct list_head lazy_init_head; |
202 | int lazy; /* lazy registration */ | |
85a9ca7f MD |
203 | }; |
204 | ||
7371f44c MD |
205 | struct lttng_krp; /* Kretprobe handling */ |
206 | ||
3c997079 MD |
207 | enum lttng_event_type { |
208 | LTTNG_TYPE_EVENT = 0, | |
209 | LTTNG_TYPE_ENABLER = 1, | |
210 | }; | |
211 | ||
07dfc1d0 MD |
212 | struct lttng_filter_bytecode_node { |
213 | struct list_head node; | |
214 | struct lttng_enabler *enabler; | |
215 | /* | |
216 | * struct lttng_kernel_filter_bytecode has var. sized array, must be | |
217 | * last field. | |
218 | */ | |
219 | struct lttng_kernel_filter_bytecode bc; | |
220 | }; | |
221 | ||
222 | /* | |
223 | * Filter return value masks. | |
224 | */ | |
225 | enum lttng_filter_ret { | |
226 | LTTNG_FILTER_DISCARD = 0, | |
227 | LTTNG_FILTER_RECORD_FLAG = (1ULL << 0), | |
228 | /* Other bits are kept for future use. */ | |
229 | }; | |
230 | ||
231 | struct lttng_bytecode_runtime { | |
232 | /* Associated bytecode */ | |
233 | struct lttng_filter_bytecode_node *bc; | |
234 | uint64_t (*filter)(void *filter_data, const char *filter_stack_data); | |
235 | int link_failed; | |
236 | struct list_head node; /* list of bytecode runtime in event */ | |
237 | }; | |
238 | ||
3c997079 MD |
239 | /* |
240 | * Objects in a linked-list of enablers, owned by an event. | |
241 | */ | |
242 | struct lttng_enabler_ref { | |
243 | struct list_head node; /* enabler ref list */ | |
244 | struct lttng_enabler *ref; /* backward ref */ | |
245 | }; | |
246 | ||
85a9ca7f | 247 | /* |
a90917c3 | 248 | * lttng_event structure is referred to by the tracing fast path. It must be |
85a9ca7f MD |
249 | * kept small. |
250 | */ | |
a90917c3 | 251 | struct lttng_event { |
3c997079 | 252 | enum lttng_event_type evtype; /* First field. */ |
85a9ca7f | 253 | unsigned int id; |
a90917c3 | 254 | struct lttng_channel *chan; |
e64957da | 255 | int enabled; |
d3dbe23c | 256 | const struct lttng_event_desc *desc; |
85a9ca7f | 257 | void *filter; |
f1676205 | 258 | struct lttng_ctx *ctx; |
38d024ae | 259 | enum lttng_kernel_instrumentation instrumentation; |
d6d808f3 MD |
260 | union { |
261 | struct { | |
262 | struct kprobe kp; | |
263 | char *symbol_name; | |
264 | } kprobe; | |
7371f44c MD |
265 | struct { |
266 | struct lttng_krp *lttng_krp; | |
267 | char *symbol_name; | |
268 | } kretprobe; | |
e0a7a7c4 MD |
269 | struct { |
270 | char *symbol_name; | |
271 | } ftrace; | |
d6d808f3 | 272 | } u; |
3c997079 | 273 | struct list_head list; /* Event list in session */ |
9cccf98a | 274 | unsigned int metadata_dumped:1; |
3c997079 MD |
275 | |
276 | /* Backward references: list of lttng_enabler_ref (ref to enablers) */ | |
277 | struct list_head enablers_ref_head; | |
278 | struct hlist_node hlist; /* session ht of events */ | |
279 | int registered; /* has reg'd tracepoint probe */ | |
07dfc1d0 MD |
280 | /* list of struct lttng_bytecode_runtime, sorted by seqnum */ |
281 | struct list_head bytecode_runtime_head; | |
282 | int has_enablers_without_bytecode; | |
3c997079 MD |
283 | }; |
284 | ||
285 | enum lttng_enabler_type { | |
286 | LTTNG_ENABLER_WILDCARD, | |
287 | LTTNG_ENABLER_NAME, | |
288 | }; | |
289 | ||
290 | /* | |
291 | * Enabler field, within whatever object is enabling an event. Target of | |
292 | * backward reference. | |
293 | */ | |
294 | struct lttng_enabler { | |
295 | enum lttng_event_type evtype; /* First field. */ | |
296 | ||
297 | enum lttng_enabler_type type; | |
298 | ||
299 | struct list_head node; /* per-session list of enablers */ | |
07dfc1d0 MD |
300 | /* head list of struct lttng_ust_filter_bytecode_node */ |
301 | struct list_head filter_bytecode_head; | |
3c997079 MD |
302 | |
303 | struct lttng_kernel_event event_param; | |
304 | struct lttng_channel *chan; | |
305 | struct lttng_ctx *ctx; | |
306 | unsigned int enabled:1; | |
85a9ca7f MD |
307 | }; |
308 | ||
a90917c3 | 309 | struct lttng_channel_ops { |
85a9ca7f | 310 | struct channel *(*channel_create)(const char *name, |
a90917c3 | 311 | struct lttng_channel *lttng_chan, |
85a9ca7f MD |
312 | void *buf_addr, |
313 | size_t subbuf_size, size_t num_subbuf, | |
314 | unsigned int switch_timer_interval, | |
315 | unsigned int read_timer_interval); | |
316 | void (*channel_destroy)(struct channel *chan); | |
317 | struct lib_ring_buffer *(*buffer_read_open)(struct channel *chan); | |
f71ecafa | 318 | int (*buffer_has_read_closed_stream)(struct channel *chan); |
85a9ca7f | 319 | void (*buffer_read_close)(struct lib_ring_buffer *buf); |
4e1f08f4 | 320 | int (*event_reserve)(struct lib_ring_buffer_ctx *ctx, |
64c796d8 | 321 | uint32_t event_id); |
85a9ca7f MD |
322 | void (*event_commit)(struct lib_ring_buffer_ctx *ctx); |
323 | void (*event_write)(struct lib_ring_buffer_ctx *ctx, const void *src, | |
324 | size_t len); | |
4ea00e4f JD |
325 | void (*event_write_from_user)(struct lib_ring_buffer_ctx *ctx, |
326 | const void *src, size_t len); | |
58aa5d24 MD |
327 | void (*event_memset)(struct lib_ring_buffer_ctx *ctx, |
328 | int c, size_t len); | |
16f78f3a MD |
329 | void (*event_strcpy)(struct lib_ring_buffer_ctx *ctx, const char *src, |
330 | size_t len); | |
331 | void (*event_strcpy_from_user)(struct lib_ring_buffer_ctx *ctx, | |
332 | const char __user *src, size_t len); | |
1ec3f75a MD |
333 | /* |
334 | * packet_avail_size returns the available size in the current | |
335 | * packet. Note that the size returned is only a hint, since it | |
336 | * may change due to concurrent writes. | |
337 | */ | |
338 | size_t (*packet_avail_size)(struct channel *chan); | |
71c1d843 | 339 | wait_queue_head_t *(*get_writer_buf_wait_queue)(struct channel *chan, int cpu); |
24cedcfe MD |
340 | wait_queue_head_t *(*get_hp_wait_queue)(struct channel *chan); |
341 | int (*is_finalized)(struct channel *chan); | |
254ec7bc | 342 | int (*is_disabled)(struct channel *chan); |
3b731ab1 JD |
343 | int (*timestamp_begin) (const struct lib_ring_buffer_config *config, |
344 | struct lib_ring_buffer *bufb, | |
345 | uint64_t *timestamp_begin); | |
346 | int (*timestamp_end) (const struct lib_ring_buffer_config *config, | |
347 | struct lib_ring_buffer *bufb, | |
348 | uint64_t *timestamp_end); | |
349 | int (*events_discarded) (const struct lib_ring_buffer_config *config, | |
350 | struct lib_ring_buffer *bufb, | |
351 | uint64_t *events_discarded); | |
352 | int (*content_size) (const struct lib_ring_buffer_config *config, | |
353 | struct lib_ring_buffer *bufb, | |
354 | uint64_t *content_size); | |
355 | int (*packet_size) (const struct lib_ring_buffer_config *config, | |
356 | struct lib_ring_buffer *bufb, | |
357 | uint64_t *packet_size); | |
358 | int (*stream_id) (const struct lib_ring_buffer_config *config, | |
359 | struct lib_ring_buffer *bufb, | |
360 | uint64_t *stream_id); | |
2348ca17 JD |
361 | int (*current_timestamp) (const struct lib_ring_buffer_config *config, |
362 | struct lib_ring_buffer *bufb, | |
363 | uint64_t *ts); | |
5b3cf4f9 JD |
364 | int (*sequence_number) (const struct lib_ring_buffer_config *config, |
365 | struct lib_ring_buffer *bufb, | |
366 | uint64_t *seq); | |
5594698f JD |
367 | int (*instance_id) (const struct lib_ring_buffer_config *config, |
368 | struct lib_ring_buffer *bufb, | |
369 | uint64_t *id); | |
85a9ca7f MD |
370 | }; |
371 | ||
a90917c3 | 372 | struct lttng_transport { |
a33c9927 MD |
373 | char *name; |
374 | struct module *owner; | |
375 | struct list_head node; | |
a90917c3 | 376 | struct lttng_channel_ops ops; |
a33c9927 MD |
377 | }; |
378 | ||
80f87dd2 MD |
379 | struct lttng_syscall_filter; |
380 | ||
3c997079 MD |
381 | #define LTTNG_EVENT_HT_BITS 12 |
382 | #define LTTNG_EVENT_HT_SIZE (1U << LTTNG_EVENT_HT_BITS) | |
383 | ||
384 | struct lttng_event_ht { | |
385 | struct hlist_head table[LTTNG_EVENT_HT_SIZE]; | |
386 | }; | |
387 | ||
a90917c3 | 388 | struct lttng_channel { |
c099397a | 389 | unsigned int id; |
85a9ca7f | 390 | struct channel *chan; /* Channel buffers */ |
e64957da | 391 | int enabled; |
f1676205 | 392 | struct lttng_ctx *ctx; |
85a9ca7f | 393 | /* Event ID management */ |
a90917c3 | 394 | struct lttng_session *session; |
85a9ca7f MD |
395 | struct file *file; /* File associated to channel */ |
396 | unsigned int free_event_id; /* Next event ID to allocate */ | |
397 | struct list_head list; /* Channel list */ | |
a90917c3 MD |
398 | struct lttng_channel_ops *ops; |
399 | struct lttng_transport *transport; | |
400 | struct lttng_event **sc_table; /* for syscall tracing */ | |
401 | struct lttng_event **compat_sc_table; | |
5b7ac358 MD |
402 | struct lttng_event **sc_exit_table; /* for syscall exit tracing */ |
403 | struct lttng_event **compat_sc_exit_table; | |
a90917c3 MD |
404 | struct lttng_event *sc_unknown; /* for unknown syscalls */ |
405 | struct lttng_event *sc_compat_unknown; | |
5b7ac358 MD |
406 | struct lttng_event *sc_exit_unknown; |
407 | struct lttng_event *compat_sc_exit_unknown; | |
80f87dd2 | 408 | struct lttng_syscall_filter *sc_filter; |
9115fbdc | 409 | int header_type; /* 0: unset, 1: compact, 2: large */ |
d83004aa | 410 | enum channel_type channel_type; |
80f87dd2 MD |
411 | unsigned int metadata_dumped:1, |
412 | sys_enter_registered:1, | |
413 | sys_exit_registered:1, | |
3c997079 MD |
414 | syscall_all:1, |
415 | tstate:1; /* Transient enable state */ | |
85a9ca7f MD |
416 | }; |
417 | ||
d83004aa JD |
418 | struct lttng_metadata_stream { |
419 | void *priv; /* Ring buffer private data */ | |
420 | struct lttng_metadata_cache *metadata_cache; | |
f613e3e6 MD |
421 | unsigned int metadata_in; /* Bytes read from the cache */ |
422 | unsigned int metadata_out; /* Bytes consumed from stream */ | |
d83004aa JD |
423 | int finalized; /* Has channel been finalized */ |
424 | wait_queue_head_t read_wait; /* Reader buffer-level wait queue */ | |
425 | struct list_head list; /* Stream list */ | |
b3b8072b | 426 | struct lttng_transport *transport; |
9616f0bf | 427 | uint64_t version; /* Current version of the metadata cache */ |
d83004aa JD |
428 | }; |
429 | ||
e0130fab MD |
430 | |
431 | /* | |
432 | * struct lttng_pid_tracker declared in header due to deferencing of *v | |
433 | * in RCU_INITIALIZER(v). | |
434 | */ | |
435 | #define LTTNG_PID_HASH_BITS 6 | |
436 | #define LTTNG_PID_TABLE_SIZE (1 << LTTNG_PID_HASH_BITS) | |
437 | ||
438 | struct lttng_pid_tracker { | |
439 | struct hlist_head pid_hash[LTTNG_PID_TABLE_SIZE]; | |
440 | }; | |
441 | ||
7e6f9ef6 MD |
442 | struct lttng_pid_hash_node { |
443 | struct hlist_node hlist; | |
444 | int pid; | |
445 | }; | |
446 | ||
a90917c3 | 447 | struct lttng_session { |
85a9ca7f | 448 | int active; /* Is trace session active ? */ |
8070f5c0 | 449 | int been_active; /* Has trace session been active ? */ |
85a9ca7f MD |
450 | struct file *file; /* File associated to session */ |
451 | struct list_head chan; /* Channel list head */ | |
452 | struct list_head events; /* Event list head */ | |
453 | struct list_head list; /* Session list */ | |
c099397a | 454 | unsigned int free_chan_id; /* Next chan ID to allocate */ |
d793d5e1 | 455 | uuid_le uuid; /* Trace session unique ID */ |
d83004aa | 456 | struct lttng_metadata_cache *metadata_cache; |
e0130fab | 457 | struct lttng_pid_tracker *pid_tracker; |
3c997079 MD |
458 | unsigned int metadata_dumped:1, |
459 | tstate:1; /* Transient enable state */ | |
460 | /* List of enablers */ | |
461 | struct list_head enablers_head; | |
462 | /* Hash table of events */ | |
463 | struct lttng_event_ht events_ht; | |
85a9ca7f MD |
464 | }; |
465 | ||
d83004aa JD |
466 | struct lttng_metadata_cache { |
467 | char *data; /* Metadata cache */ | |
468 | unsigned int cache_alloc; /* Metadata allocated size (bytes) */ | |
469 | unsigned int metadata_written; /* Number of bytes written in metadata cache */ | |
470 | struct kref refcount; /* Metadata cache usage */ | |
471 | struct list_head metadata_stream; /* Metadata stream list */ | |
a36580d5 | 472 | uuid_le uuid; /* Trace session unique ID (copy) */ |
9616f0bf JD |
473 | struct mutex lock; /* Produce/consume lock */ |
474 | uint64_t version; /* Current version of the metadata */ | |
d83004aa JD |
475 | }; |
476 | ||
3c997079 MD |
477 | void lttng_lock_sessions(void); |
478 | void lttng_unlock_sessions(void); | |
479 | ||
480 | struct list_head *lttng_get_probe_list_head(void); | |
481 | ||
482 | struct lttng_enabler *lttng_enabler_create(enum lttng_enabler_type type, | |
483 | struct lttng_kernel_event *event_param, | |
484 | struct lttng_channel *chan); | |
485 | ||
486 | int lttng_enabler_enable(struct lttng_enabler *enabler); | |
487 | int lttng_enabler_disable(struct lttng_enabler *enabler); | |
488 | int lttng_fix_pending_events(void); | |
489 | int lttng_session_active(void); | |
490 | ||
a90917c3 MD |
491 | struct lttng_session *lttng_session_create(void); |
492 | int lttng_session_enable(struct lttng_session *session); | |
493 | int lttng_session_disable(struct lttng_session *session); | |
494 | void lttng_session_destroy(struct lttng_session *session); | |
9616f0bf | 495 | int lttng_session_metadata_regenerate(struct lttng_session *session); |
d83004aa | 496 | void metadata_cache_destroy(struct kref *kref); |
4e3c1b9b | 497 | |
a90917c3 | 498 | struct lttng_channel *lttng_channel_create(struct lttng_session *session, |
5dbbdb43 MD |
499 | const char *transport_name, |
500 | void *buf_addr, | |
501 | size_t subbuf_size, size_t num_subbuf, | |
502 | unsigned int switch_timer_interval, | |
d83004aa JD |
503 | unsigned int read_timer_interval, |
504 | enum channel_type channel_type); | |
a90917c3 | 505 | struct lttng_channel *lttng_global_channel_create(struct lttng_session *session, |
4e3c1b9b MD |
506 | int overwrite, void *buf_addr, |
507 | size_t subbuf_size, size_t num_subbuf, | |
508 | unsigned int switch_timer_interval, | |
509 | unsigned int read_timer_interval); | |
4e3c1b9b | 510 | |
d83004aa | 511 | void lttng_metadata_channel_destroy(struct lttng_channel *chan); |
a90917c3 | 512 | struct lttng_event *lttng_event_create(struct lttng_channel *chan, |
3c997079 MD |
513 | struct lttng_kernel_event *event_param, |
514 | void *filter, | |
515 | const struct lttng_event_desc *event_desc, | |
516 | enum lttng_kernel_instrumentation itype); | |
33a39a3c MD |
517 | struct lttng_event *_lttng_event_create(struct lttng_channel *chan, |
518 | struct lttng_kernel_event *event_param, | |
519 | void *filter, | |
520 | const struct lttng_event_desc *event_desc, | |
521 | enum lttng_kernel_instrumentation itype); | |
6dccd6c1 JD |
522 | struct lttng_event *lttng_event_compat_old_create(struct lttng_channel *chan, |
523 | struct lttng_kernel_old_event *old_event_param, | |
524 | void *filter, | |
525 | const struct lttng_event_desc *internal_desc); | |
c0e31d2e | 526 | |
a90917c3 MD |
527 | int lttng_channel_enable(struct lttng_channel *channel); |
528 | int lttng_channel_disable(struct lttng_channel *channel); | |
529 | int lttng_event_enable(struct lttng_event *event); | |
530 | int lttng_event_disable(struct lttng_event *event); | |
e64957da | 531 | |
a90917c3 MD |
532 | void lttng_transport_register(struct lttng_transport *transport); |
533 | void lttng_transport_unregister(struct lttng_transport *transport); | |
11b5a3c2 | 534 | |
360f38ea | 535 | void synchronize_trace(void); |
80996790 | 536 | int lttng_abi_init(void); |
6dccd6c1 | 537 | int lttng_abi_compat_old_init(void); |
80996790 | 538 | void lttng_abi_exit(void); |
6dccd6c1 | 539 | void lttng_abi_compat_old_exit(void); |
1c25284c | 540 | |
a90917c3 MD |
541 | int lttng_probe_register(struct lttng_probe_desc *desc); |
542 | void lttng_probe_unregister(struct lttng_probe_desc *desc); | |
543 | const struct lttng_event_desc *lttng_event_get(const char *name); | |
544 | void lttng_event_put(const struct lttng_event_desc *desc); | |
545 | int lttng_probes_init(void); | |
546 | void lttng_probes_exit(void); | |
1ec65de1 | 547 | |
b3b8072b MD |
548 | int lttng_metadata_output_channel(struct lttng_metadata_stream *stream, |
549 | struct channel *chan); | |
d83004aa | 550 | |
7e6f9ef6 | 551 | int lttng_pid_tracker_get_node_pid(const struct lttng_pid_hash_node *node); |
e0130fab MD |
552 | struct lttng_pid_tracker *lttng_pid_tracker_create(void); |
553 | void lttng_pid_tracker_destroy(struct lttng_pid_tracker *lpf); | |
554 | bool lttng_pid_tracker_lookup(struct lttng_pid_tracker *lpf, int pid); | |
555 | int lttng_pid_tracker_add(struct lttng_pid_tracker *lpf, int pid); | |
556 | int lttng_pid_tracker_del(struct lttng_pid_tracker *lpf, int pid); | |
557 | ||
558 | int lttng_session_track_pid(struct lttng_session *session, int pid); | |
559 | int lttng_session_untrack_pid(struct lttng_session *session, int pid); | |
560 | ||
7e6f9ef6 MD |
561 | int lttng_session_list_tracker_pids(struct lttng_session *session); |
562 | ||
2754583e MD |
563 | void lttng_clock_ref(void); |
564 | void lttng_clock_unref(void); | |
565 | ||
3a523f5b | 566 | #if defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS) |
a90917c3 MD |
567 | int lttng_syscalls_register(struct lttng_channel *chan, void *filter); |
568 | int lttng_syscalls_unregister(struct lttng_channel *chan); | |
80f87dd2 MD |
569 | int lttng_syscall_filter_enable(struct lttng_channel *chan, |
570 | const char *name); | |
571 | int lttng_syscall_filter_disable(struct lttng_channel *chan, | |
572 | const char *name); | |
12e579db MD |
573 | long lttng_channel_syscall_mask(struct lttng_channel *channel, |
574 | struct lttng_kernel_syscall_mask __user *usyscall_mask); | |
1ec65de1 | 575 | #else |
a90917c3 | 576 | static inline int lttng_syscalls_register(struct lttng_channel *chan, void *filter) |
1ec65de1 MD |
577 | { |
578 | return -ENOSYS; | |
579 | } | |
580 | ||
a90917c3 | 581 | static inline int lttng_syscalls_unregister(struct lttng_channel *chan) |
1ec65de1 MD |
582 | { |
583 | return 0; | |
584 | } | |
80f87dd2 | 585 | |
f127e61e | 586 | static inline int lttng_syscall_filter_enable(struct lttng_channel *chan, |
80f87dd2 MD |
587 | const char *name) |
588 | { | |
589 | return -ENOSYS; | |
590 | } | |
591 | ||
f127e61e | 592 | static inline int lttng_syscall_filter_disable(struct lttng_channel *chan, |
80f87dd2 MD |
593 | const char *name) |
594 | { | |
595 | return -ENOSYS; | |
596 | } | |
12e579db | 597 | |
f127e61e | 598 | static inline long lttng_channel_syscall_mask(struct lttng_channel *channel, |
12e579db MD |
599 | struct lttng_kernel_syscall_mask __user *usyscall_mask) |
600 | { | |
601 | return -ENOSYS; | |
602 | } | |
1ec65de1 MD |
603 | #endif |
604 | ||
07dfc1d0 MD |
605 | void lttng_filter_sync_state(struct lttng_bytecode_runtime *runtime); |
606 | int lttng_enabler_attach_bytecode(struct lttng_enabler *enabler, | |
607 | struct lttng_kernel_filter_bytecode __user *bytecode); | |
f127e61e MD |
608 | void lttng_enabler_event_link_bytecode(struct lttng_event *event, |
609 | struct lttng_enabler *enabler); | |
07dfc1d0 MD |
610 | |
611 | extern struct lttng_ctx *lttng_static_ctx; | |
612 | ||
613 | int lttng_context_init(void); | |
614 | void lttng_context_exit(void); | |
2dccf128 | 615 | struct lttng_ctx_field *lttng_append_context(struct lttng_ctx **ctx); |
a9dd15da | 616 | void lttng_context_update(struct lttng_ctx *ctx); |
44252f0f | 617 | int lttng_find_context(struct lttng_ctx *ctx, const char *name); |
07dfc1d0 | 618 | int lttng_get_context_index(struct lttng_ctx *ctx, const char *name); |
8289661d MD |
619 | void lttng_remove_context_field(struct lttng_ctx **ctx, |
620 | struct lttng_ctx_field *field); | |
2dccf128 | 621 | void lttng_destroy_context(struct lttng_ctx *ctx); |
8070f5c0 | 622 | int lttng_add_pid_to_ctx(struct lttng_ctx **ctx); |
b3699d90 | 623 | int lttng_add_cpu_id_to_ctx(struct lttng_ctx **ctx); |
a2563e83 | 624 | int lttng_add_procname_to_ctx(struct lttng_ctx **ctx); |
a8ad3613 | 625 | int lttng_add_prio_to_ctx(struct lttng_ctx **ctx); |
53f1f0ca | 626 | int lttng_add_nice_to_ctx(struct lttng_ctx **ctx); |
b64bc438 MD |
627 | int lttng_add_vpid_to_ctx(struct lttng_ctx **ctx); |
628 | int lttng_add_tid_to_ctx(struct lttng_ctx **ctx); | |
629 | int lttng_add_vtid_to_ctx(struct lttng_ctx **ctx); | |
630 | int lttng_add_ppid_to_ctx(struct lttng_ctx **ctx); | |
631 | int lttng_add_vppid_to_ctx(struct lttng_ctx **ctx); | |
975da2c0 | 632 | int lttng_add_hostname_to_ctx(struct lttng_ctx **ctx); |
41c3c24e | 633 | #if defined(CONFIG_PERF_EVENTS) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,33)) |
c24a0d71 MD |
634 | int lttng_add_perf_counter_to_ctx(uint32_t type, |
635 | uint64_t config, | |
636 | const char *name, | |
637 | struct lttng_ctx **ctx); | |
1d443b34 MD |
638 | #else |
639 | static inline | |
640 | int lttng_add_perf_counter_to_ctx(uint32_t type, | |
641 | uint64_t config, | |
642 | const char *name, | |
643 | struct lttng_ctx **ctx) | |
644 | { | |
645 | return -ENOSYS; | |
646 | } | |
647 | #endif | |
02119ee5 | 648 | |
0c956676 MD |
649 | int lttng_logger_init(void); |
650 | void lttng_logger_exit(void); | |
651 | ||
c337ddc2 MD |
652 | extern int lttng_statedump_start(struct lttng_session *session); |
653 | ||
acd614cc | 654 | #ifdef CONFIG_KPROBES |
f17701fb MD |
655 | int lttng_kprobes_register(const char *name, |
656 | const char *symbol_name, | |
657 | uint64_t offset, | |
658 | uint64_t addr, | |
a90917c3 MD |
659 | struct lttng_event *event); |
660 | void lttng_kprobes_unregister(struct lttng_event *event); | |
661 | void lttng_kprobes_destroy_private(struct lttng_event *event); | |
acd614cc MD |
662 | #else |
663 | static inline | |
664 | int lttng_kprobes_register(const char *name, | |
665 | const char *symbol_name, | |
666 | uint64_t offset, | |
667 | uint64_t addr, | |
a90917c3 | 668 | struct lttng_event *event) |
acd614cc MD |
669 | { |
670 | return -ENOSYS; | |
671 | } | |
672 | ||
25f53c39 | 673 | static inline |
a90917c3 | 674 | void lttng_kprobes_unregister(struct lttng_event *event) |
acd614cc MD |
675 | { |
676 | } | |
edeb3137 MD |
677 | |
678 | static inline | |
a90917c3 | 679 | void lttng_kprobes_destroy_private(struct lttng_event *event) |
edeb3137 MD |
680 | { |
681 | } | |
acd614cc | 682 | #endif |
d6d808f3 | 683 | |
7371f44c MD |
684 | #ifdef CONFIG_KRETPROBES |
685 | int lttng_kretprobes_register(const char *name, | |
686 | const char *symbol_name, | |
687 | uint64_t offset, | |
688 | uint64_t addr, | |
a90917c3 MD |
689 | struct lttng_event *event_entry, |
690 | struct lttng_event *event_exit); | |
691 | void lttng_kretprobes_unregister(struct lttng_event *event); | |
692 | void lttng_kretprobes_destroy_private(struct lttng_event *event); | |
a0493bef MD |
693 | int lttng_kretprobes_event_enable_state(struct lttng_event *event, |
694 | int enable); | |
7371f44c MD |
695 | #else |
696 | static inline | |
697 | int lttng_kretprobes_register(const char *name, | |
698 | const char *symbol_name, | |
699 | uint64_t offset, | |
700 | uint64_t addr, | |
a90917c3 MD |
701 | struct lttng_event *event_entry, |
702 | struct lttng_event *event_exit) | |
7371f44c MD |
703 | { |
704 | return -ENOSYS; | |
705 | } | |
706 | ||
707 | static inline | |
a90917c3 | 708 | void lttng_kretprobes_unregister(struct lttng_event *event) |
7371f44c MD |
709 | { |
710 | } | |
711 | ||
712 | static inline | |
a90917c3 | 713 | void lttng_kretprobes_destroy_private(struct lttng_event *event) |
7371f44c MD |
714 | { |
715 | } | |
a0493bef MD |
716 | |
717 | static inline | |
718 | int lttng_kretprobes_event_enable_state(struct lttng_event *event, | |
719 | int enable) | |
720 | { | |
721 | return -ENOSYS; | |
722 | } | |
7371f44c MD |
723 | #endif |
724 | ||
e0a7a7c4 MD |
725 | #ifdef CONFIG_DYNAMIC_FTRACE |
726 | int lttng_ftrace_register(const char *name, | |
727 | const char *symbol_name, | |
a90917c3 MD |
728 | struct lttng_event *event); |
729 | void lttng_ftrace_unregister(struct lttng_event *event); | |
730 | void lttng_ftrace_destroy_private(struct lttng_event *event); | |
e0a7a7c4 MD |
731 | #else |
732 | static inline | |
733 | int lttng_ftrace_register(const char *name, | |
734 | const char *symbol_name, | |
a90917c3 | 735 | struct lttng_event *event) |
e0a7a7c4 | 736 | { |
acd614cc | 737 | return -ENOSYS; |
e0a7a7c4 MD |
738 | } |
739 | ||
740 | static inline | |
a90917c3 | 741 | void lttng_ftrace_unregister(struct lttng_event *event) |
e0a7a7c4 MD |
742 | { |
743 | } | |
edeb3137 MD |
744 | |
745 | static inline | |
a90917c3 | 746 | void lttng_ftrace_destroy_private(struct lttng_event *event) |
edeb3137 MD |
747 | { |
748 | } | |
e0a7a7c4 | 749 | #endif |
271b6681 | 750 | |
3db41b2c | 751 | int lttng_calibrate(struct lttng_kernel_calibrate *calibrate); |
57105fc2 | 752 | |
271b6681 | 753 | extern const struct file_operations lttng_tracepoint_list_fops; |
2d2464bd | 754 | extern const struct file_operations lttng_syscall_list_fops; |
271b6681 | 755 | |
ef200626 MD |
756 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) |
757 | #define TRACEPOINT_HAS_DATA_ARG | |
758 | #endif | |
759 | ||
a90917c3 | 760 | #endif /* _LTTNG_EVENTS_H */ |