Commit | Line | Data |
---|---|---|
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 | ||
64c796d8 | 74 | #define __type_integer(_type, _byte_order, _base, _encoding) \ |
c099397a MD |
75 | { \ |
76 | .atype = atype_integer, \ | |
77 | .u.basic.integer = \ | |
78 | { \ | |
30bdb6e4 | 79 | .size = sizeof(_type) * CHAR_BIT, \ |
a90917c3 | 80 | .alignment = lttng_alignof(_type) * CHAR_BIT, \ |
06254b0f | 81 | .signedness = lttng_is_signed_type(_type), \ |
c099397a | 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 | ||
97 | union _lttng_basic_type { | |
98 | struct lttng_integer_type integer; | |
99 | struct { | |
100 | const char *name; | |
101 | } enumeration; | |
102 | struct { | |
103 | enum lttng_string_encodings encoding; | |
104 | } string; | |
105 | }; | |
106 | ||
107 | struct lttng_basic_type { | |
108 | enum abstract_types atype; | |
109 | union { | |
110 | union _lttng_basic_type basic; | |
111 | } u; | |
c0edae1d MD |
112 | }; |
113 | ||
114 | struct lttng_type { | |
115 | enum abstract_types atype; | |
c0edae1d | 116 | union { |
c099397a | 117 | union _lttng_basic_type basic; |
c0edae1d | 118 | struct { |
c099397a | 119 | struct lttng_basic_type elem_type; |
c0edae1d MD |
120 | unsigned int length; /* num. elems. */ |
121 | } array; | |
122 | struct { | |
c099397a MD |
123 | struct lttng_basic_type length_type; |
124 | struct lttng_basic_type elem_type; | |
c0edae1d | 125 | } sequence; |
c0edae1d | 126 | } u; |
c099397a MD |
127 | }; |
128 | ||
129 | struct lttng_enum { | |
130 | const char *name; | |
131 | struct lttng_type container_type; | |
132 | const struct lttng_enum_entry *entries; | |
133 | unsigned int len; | |
134 | }; | |
c0edae1d MD |
135 | |
136 | /* Event field description */ | |
137 | ||
138 | struct lttng_event_field { | |
139 | const char *name; | |
f17701fb | 140 | struct lttng_type type; |
c0edae1d MD |
141 | }; |
142 | ||
07dfc1d0 MD |
143 | union lttng_ctx_value { |
144 | int64_t s64; | |
145 | const char *str; | |
146 | double d; | |
147 | }; | |
148 | ||
2001023e MD |
149 | /* |
150 | * We need to keep this perf counter field separately from struct | |
151 | * lttng_ctx_field because cpu hotplug needs fixed-location addresses. | |
152 | */ | |
153 | struct lttng_perf_counter_field { | |
154 | struct notifier_block nb; | |
155 | int hp_enable; | |
156 | struct perf_event_attr *attr; | |
157 | struct perf_event **e; /* per-cpu array */ | |
158 | }; | |
159 | ||
ba1f5986 | 160 | struct lttng_ctx_field { |
8070f5c0 | 161 | struct lttng_event_field event_field; |
f1676205 MD |
162 | size_t (*get_size)(size_t offset); |
163 | void (*record)(struct lttng_ctx_field *field, | |
164 | struct lib_ring_buffer_ctx *ctx, | |
a90917c3 | 165 | struct lttng_channel *chan); |
07dfc1d0 MD |
166 | void (*get_value)(struct lttng_ctx_field *field, |
167 | union lttng_ctx_value *value); | |
ba1f5986 | 168 | union { |
2001023e | 169 | struct lttng_perf_counter_field *perf_counter; |
ba1f5986 | 170 | } u; |
2dccf128 | 171 | void (*destroy)(struct lttng_ctx_field *field); |
ba1f5986 MD |
172 | }; |
173 | ||
174 | struct lttng_ctx { | |
833ad6a0 | 175 | struct lttng_ctx_field *fields; |
0d1a681e | 176 | unsigned int nr_fields; |
ba1f5986 | 177 | unsigned int allocated_fields; |
a9dd15da | 178 | size_t largest_align; /* in bytes */ |
0d1a681e MD |
179 | }; |
180 | ||
181 | struct lttng_event_desc { | |
a26a7e4f MD |
182 | const char *name; /* lttng-modules name */ |
183 | const char *kname; /* Linux kernel name (tracepoints) */ | |
c0edae1d | 184 | void *probe_callback; |
0d1a681e MD |
185 | const struct lttng_event_ctx *ctx; /* context */ |
186 | const struct lttng_event_field *fields; /* event payload */ | |
c0edae1d | 187 | unsigned int nr_fields; |
dc7f600a | 188 | struct module *owner; |
c0edae1d MD |
189 | }; |
190 | ||
85a9ca7f | 191 | struct lttng_probe_desc { |
3c997079 | 192 | const char *provider; |
f7bdf4db | 193 | const struct lttng_event_desc **event_desc; |
85a9ca7f MD |
194 | unsigned int nr_events; |
195 | struct list_head head; /* chain registered probes */ | |
3c997079 MD |
196 | struct list_head lazy_init_head; |
197 | int lazy; /* lazy registration */ | |
85a9ca7f MD |
198 | }; |
199 | ||
7371f44c MD |
200 | struct lttng_krp; /* Kretprobe handling */ |
201 | ||
3c997079 MD |
202 | enum lttng_event_type { |
203 | LTTNG_TYPE_EVENT = 0, | |
204 | LTTNG_TYPE_ENABLER = 1, | |
205 | }; | |
206 | ||
07dfc1d0 MD |
207 | struct lttng_filter_bytecode_node { |
208 | struct list_head node; | |
209 | struct lttng_enabler *enabler; | |
210 | /* | |
211 | * struct lttng_kernel_filter_bytecode has var. sized array, must be | |
212 | * last field. | |
213 | */ | |
214 | struct lttng_kernel_filter_bytecode bc; | |
215 | }; | |
216 | ||
217 | /* | |
218 | * Filter return value masks. | |
219 | */ | |
220 | enum lttng_filter_ret { | |
221 | LTTNG_FILTER_DISCARD = 0, | |
222 | LTTNG_FILTER_RECORD_FLAG = (1ULL << 0), | |
223 | /* Other bits are kept for future use. */ | |
224 | }; | |
225 | ||
226 | struct lttng_bytecode_runtime { | |
227 | /* Associated bytecode */ | |
228 | struct lttng_filter_bytecode_node *bc; | |
229 | uint64_t (*filter)(void *filter_data, const char *filter_stack_data); | |
230 | int link_failed; | |
231 | struct list_head node; /* list of bytecode runtime in event */ | |
232 | }; | |
233 | ||
3c997079 MD |
234 | /* |
235 | * Objects in a linked-list of enablers, owned by an event. | |
236 | */ | |
237 | struct lttng_enabler_ref { | |
238 | struct list_head node; /* enabler ref list */ | |
239 | struct lttng_enabler *ref; /* backward ref */ | |
240 | }; | |
241 | ||
85a9ca7f | 242 | /* |
a90917c3 | 243 | * lttng_event structure is referred to by the tracing fast path. It must be |
85a9ca7f MD |
244 | * kept small. |
245 | */ | |
a90917c3 | 246 | struct lttng_event { |
3c997079 | 247 | enum lttng_event_type evtype; /* First field. */ |
85a9ca7f | 248 | unsigned int id; |
a90917c3 | 249 | struct lttng_channel *chan; |
e64957da | 250 | int enabled; |
d3dbe23c | 251 | const struct lttng_event_desc *desc; |
85a9ca7f | 252 | void *filter; |
f1676205 | 253 | struct lttng_ctx *ctx; |
38d024ae | 254 | enum lttng_kernel_instrumentation instrumentation; |
d6d808f3 MD |
255 | union { |
256 | struct { | |
257 | struct kprobe kp; | |
258 | char *symbol_name; | |
259 | } kprobe; | |
7371f44c MD |
260 | struct { |
261 | struct lttng_krp *lttng_krp; | |
262 | char *symbol_name; | |
263 | } kretprobe; | |
e0a7a7c4 MD |
264 | struct { |
265 | char *symbol_name; | |
266 | } ftrace; | |
d6d808f3 | 267 | } u; |
3c997079 | 268 | struct list_head list; /* Event list in session */ |
9cccf98a | 269 | unsigned int metadata_dumped:1; |
3c997079 MD |
270 | |
271 | /* Backward references: list of lttng_enabler_ref (ref to enablers) */ | |
272 | struct list_head enablers_ref_head; | |
273 | struct hlist_node hlist; /* session ht of events */ | |
274 | int registered; /* has reg'd tracepoint probe */ | |
07dfc1d0 MD |
275 | /* list of struct lttng_bytecode_runtime, sorted by seqnum */ |
276 | struct list_head bytecode_runtime_head; | |
277 | int has_enablers_without_bytecode; | |
3c997079 MD |
278 | }; |
279 | ||
280 | enum lttng_enabler_type { | |
281 | LTTNG_ENABLER_WILDCARD, | |
282 | LTTNG_ENABLER_NAME, | |
283 | }; | |
284 | ||
285 | /* | |
286 | * Enabler field, within whatever object is enabling an event. Target of | |
287 | * backward reference. | |
288 | */ | |
289 | struct lttng_enabler { | |
290 | enum lttng_event_type evtype; /* First field. */ | |
291 | ||
292 | enum lttng_enabler_type type; | |
293 | ||
294 | struct list_head node; /* per-session list of enablers */ | |
07dfc1d0 MD |
295 | /* head list of struct lttng_ust_filter_bytecode_node */ |
296 | struct list_head filter_bytecode_head; | |
3c997079 MD |
297 | |
298 | struct lttng_kernel_event event_param; | |
299 | struct lttng_channel *chan; | |
300 | struct lttng_ctx *ctx; | |
301 | unsigned int enabled:1; | |
85a9ca7f MD |
302 | }; |
303 | ||
a90917c3 | 304 | struct lttng_channel_ops { |
85a9ca7f | 305 | struct channel *(*channel_create)(const char *name, |
a90917c3 | 306 | struct lttng_channel *lttng_chan, |
85a9ca7f MD |
307 | void *buf_addr, |
308 | size_t subbuf_size, size_t num_subbuf, | |
309 | unsigned int switch_timer_interval, | |
310 | unsigned int read_timer_interval); | |
311 | void (*channel_destroy)(struct channel *chan); | |
312 | struct lib_ring_buffer *(*buffer_read_open)(struct channel *chan); | |
f71ecafa | 313 | int (*buffer_has_read_closed_stream)(struct channel *chan); |
85a9ca7f | 314 | void (*buffer_read_close)(struct lib_ring_buffer *buf); |
4e1f08f4 | 315 | int (*event_reserve)(struct lib_ring_buffer_ctx *ctx, |
64c796d8 | 316 | uint32_t event_id); |
85a9ca7f MD |
317 | void (*event_commit)(struct lib_ring_buffer_ctx *ctx); |
318 | void (*event_write)(struct lib_ring_buffer_ctx *ctx, const void *src, | |
319 | size_t len); | |
4ea00e4f JD |
320 | void (*event_write_from_user)(struct lib_ring_buffer_ctx *ctx, |
321 | const void *src, size_t len); | |
58aa5d24 MD |
322 | void (*event_memset)(struct lib_ring_buffer_ctx *ctx, |
323 | int c, size_t len); | |
16f78f3a MD |
324 | void (*event_strcpy)(struct lib_ring_buffer_ctx *ctx, const char *src, |
325 | size_t len); | |
326 | void (*event_strcpy_from_user)(struct lib_ring_buffer_ctx *ctx, | |
327 | const char __user *src, size_t len); | |
1ec3f75a MD |
328 | /* |
329 | * packet_avail_size returns the available size in the current | |
330 | * packet. Note that the size returned is only a hint, since it | |
331 | * may change due to concurrent writes. | |
332 | */ | |
333 | size_t (*packet_avail_size)(struct channel *chan); | |
71c1d843 | 334 | wait_queue_head_t *(*get_writer_buf_wait_queue)(struct channel *chan, int cpu); |
24cedcfe MD |
335 | wait_queue_head_t *(*get_hp_wait_queue)(struct channel *chan); |
336 | int (*is_finalized)(struct channel *chan); | |
254ec7bc | 337 | int (*is_disabled)(struct channel *chan); |
3b731ab1 JD |
338 | int (*timestamp_begin) (const struct lib_ring_buffer_config *config, |
339 | struct lib_ring_buffer *bufb, | |
340 | uint64_t *timestamp_begin); | |
341 | int (*timestamp_end) (const struct lib_ring_buffer_config *config, | |
342 | struct lib_ring_buffer *bufb, | |
343 | uint64_t *timestamp_end); | |
344 | int (*events_discarded) (const struct lib_ring_buffer_config *config, | |
345 | struct lib_ring_buffer *bufb, | |
346 | uint64_t *events_discarded); | |
347 | int (*content_size) (const struct lib_ring_buffer_config *config, | |
348 | struct lib_ring_buffer *bufb, | |
349 | uint64_t *content_size); | |
350 | int (*packet_size) (const struct lib_ring_buffer_config *config, | |
351 | struct lib_ring_buffer *bufb, | |
352 | uint64_t *packet_size); | |
353 | int (*stream_id) (const struct lib_ring_buffer_config *config, | |
354 | struct lib_ring_buffer *bufb, | |
355 | uint64_t *stream_id); | |
2348ca17 JD |
356 | int (*current_timestamp) (const struct lib_ring_buffer_config *config, |
357 | struct lib_ring_buffer *bufb, | |
358 | uint64_t *ts); | |
85a9ca7f MD |
359 | }; |
360 | ||
a90917c3 | 361 | struct lttng_transport { |
a33c9927 MD |
362 | char *name; |
363 | struct module *owner; | |
364 | struct list_head node; | |
a90917c3 | 365 | struct lttng_channel_ops ops; |
a33c9927 MD |
366 | }; |
367 | ||
80f87dd2 MD |
368 | struct lttng_syscall_filter; |
369 | ||
3c997079 MD |
370 | #define LTTNG_EVENT_HT_BITS 12 |
371 | #define LTTNG_EVENT_HT_SIZE (1U << LTTNG_EVENT_HT_BITS) | |
372 | ||
373 | struct lttng_event_ht { | |
374 | struct hlist_head table[LTTNG_EVENT_HT_SIZE]; | |
375 | }; | |
376 | ||
a90917c3 | 377 | struct lttng_channel { |
c099397a | 378 | unsigned int id; |
85a9ca7f | 379 | struct channel *chan; /* Channel buffers */ |
e64957da | 380 | int enabled; |
f1676205 | 381 | struct lttng_ctx *ctx; |
85a9ca7f | 382 | /* Event ID management */ |
a90917c3 | 383 | struct lttng_session *session; |
85a9ca7f MD |
384 | struct file *file; /* File associated to channel */ |
385 | unsigned int free_event_id; /* Next event ID to allocate */ | |
386 | struct list_head list; /* Channel list */ | |
a90917c3 MD |
387 | struct lttng_channel_ops *ops; |
388 | struct lttng_transport *transport; | |
389 | struct lttng_event **sc_table; /* for syscall tracing */ | |
390 | struct lttng_event **compat_sc_table; | |
5b7ac358 MD |
391 | struct lttng_event **sc_exit_table; /* for syscall exit tracing */ |
392 | struct lttng_event **compat_sc_exit_table; | |
a90917c3 MD |
393 | struct lttng_event *sc_unknown; /* for unknown syscalls */ |
394 | struct lttng_event *sc_compat_unknown; | |
5b7ac358 MD |
395 | struct lttng_event *sc_exit_unknown; |
396 | struct lttng_event *compat_sc_exit_unknown; | |
80f87dd2 | 397 | struct lttng_syscall_filter *sc_filter; |
9115fbdc | 398 | int header_type; /* 0: unset, 1: compact, 2: large */ |
d83004aa | 399 | enum channel_type channel_type; |
80f87dd2 MD |
400 | unsigned int metadata_dumped:1, |
401 | sys_enter_registered:1, | |
402 | sys_exit_registered:1, | |
3c997079 MD |
403 | syscall_all:1, |
404 | tstate:1; /* Transient enable state */ | |
85a9ca7f MD |
405 | }; |
406 | ||
d83004aa JD |
407 | struct lttng_metadata_stream { |
408 | void *priv; /* Ring buffer private data */ | |
409 | struct lttng_metadata_cache *metadata_cache; | |
f613e3e6 MD |
410 | unsigned int metadata_in; /* Bytes read from the cache */ |
411 | unsigned int metadata_out; /* Bytes consumed from stream */ | |
d83004aa JD |
412 | int finalized; /* Has channel been finalized */ |
413 | wait_queue_head_t read_wait; /* Reader buffer-level wait queue */ | |
414 | struct list_head list; /* Stream list */ | |
b3b8072b | 415 | struct lttng_transport *transport; |
de23d59d | 416 | struct mutex lock; |
d83004aa JD |
417 | }; |
418 | ||
e0130fab MD |
419 | |
420 | /* | |
421 | * struct lttng_pid_tracker declared in header due to deferencing of *v | |
422 | * in RCU_INITIALIZER(v). | |
423 | */ | |
424 | #define LTTNG_PID_HASH_BITS 6 | |
425 | #define LTTNG_PID_TABLE_SIZE (1 << LTTNG_PID_HASH_BITS) | |
426 | ||
427 | struct lttng_pid_tracker { | |
428 | struct hlist_head pid_hash[LTTNG_PID_TABLE_SIZE]; | |
429 | }; | |
430 | ||
7e6f9ef6 MD |
431 | struct lttng_pid_hash_node { |
432 | struct hlist_node hlist; | |
433 | int pid; | |
434 | }; | |
435 | ||
a90917c3 | 436 | struct lttng_session { |
85a9ca7f | 437 | int active; /* Is trace session active ? */ |
8070f5c0 | 438 | int been_active; /* Has trace session been active ? */ |
85a9ca7f MD |
439 | struct file *file; /* File associated to session */ |
440 | struct list_head chan; /* Channel list head */ | |
441 | struct list_head events; /* Event list head */ | |
442 | struct list_head list; /* Session list */ | |
c099397a | 443 | unsigned int free_chan_id; /* Next chan ID to allocate */ |
d793d5e1 | 444 | uuid_le uuid; /* Trace session unique ID */ |
d83004aa | 445 | struct lttng_metadata_cache *metadata_cache; |
e0130fab | 446 | struct lttng_pid_tracker *pid_tracker; |
3c997079 MD |
447 | unsigned int metadata_dumped:1, |
448 | tstate:1; /* Transient enable state */ | |
449 | /* List of enablers */ | |
450 | struct list_head enablers_head; | |
451 | /* Hash table of events */ | |
452 | struct lttng_event_ht events_ht; | |
85a9ca7f MD |
453 | }; |
454 | ||
d83004aa JD |
455 | struct lttng_metadata_cache { |
456 | char *data; /* Metadata cache */ | |
457 | unsigned int cache_alloc; /* Metadata allocated size (bytes) */ | |
458 | unsigned int metadata_written; /* Number of bytes written in metadata cache */ | |
459 | struct kref refcount; /* Metadata cache usage */ | |
460 | struct list_head metadata_stream; /* Metadata stream list */ | |
a36580d5 | 461 | uuid_le uuid; /* Trace session unique ID (copy) */ |
d83004aa JD |
462 | }; |
463 | ||
3c997079 MD |
464 | void lttng_lock_sessions(void); |
465 | void lttng_unlock_sessions(void); | |
466 | ||
467 | struct list_head *lttng_get_probe_list_head(void); | |
468 | ||
469 | struct lttng_enabler *lttng_enabler_create(enum lttng_enabler_type type, | |
470 | struct lttng_kernel_event *event_param, | |
471 | struct lttng_channel *chan); | |
472 | ||
473 | int lttng_enabler_enable(struct lttng_enabler *enabler); | |
474 | int lttng_enabler_disable(struct lttng_enabler *enabler); | |
475 | int lttng_fix_pending_events(void); | |
476 | int lttng_session_active(void); | |
477 | ||
a90917c3 MD |
478 | struct lttng_session *lttng_session_create(void); |
479 | int lttng_session_enable(struct lttng_session *session); | |
480 | int lttng_session_disable(struct lttng_session *session); | |
481 | void lttng_session_destroy(struct lttng_session *session); | |
d83004aa | 482 | void metadata_cache_destroy(struct kref *kref); |
4e3c1b9b | 483 | |
a90917c3 | 484 | struct lttng_channel *lttng_channel_create(struct lttng_session *session, |
5dbbdb43 MD |
485 | const char *transport_name, |
486 | void *buf_addr, | |
487 | size_t subbuf_size, size_t num_subbuf, | |
488 | unsigned int switch_timer_interval, | |
d83004aa JD |
489 | unsigned int read_timer_interval, |
490 | enum channel_type channel_type); | |
a90917c3 | 491 | struct lttng_channel *lttng_global_channel_create(struct lttng_session *session, |
4e3c1b9b MD |
492 | int overwrite, void *buf_addr, |
493 | size_t subbuf_size, size_t num_subbuf, | |
494 | unsigned int switch_timer_interval, | |
495 | unsigned int read_timer_interval); | |
4e3c1b9b | 496 | |
d83004aa | 497 | void lttng_metadata_channel_destroy(struct lttng_channel *chan); |
a90917c3 | 498 | struct lttng_event *lttng_event_create(struct lttng_channel *chan, |
3c997079 MD |
499 | struct lttng_kernel_event *event_param, |
500 | void *filter, | |
501 | const struct lttng_event_desc *event_desc, | |
502 | enum lttng_kernel_instrumentation itype); | |
33a39a3c MD |
503 | struct lttng_event *_lttng_event_create(struct lttng_channel *chan, |
504 | struct lttng_kernel_event *event_param, | |
505 | void *filter, | |
506 | const struct lttng_event_desc *event_desc, | |
507 | enum lttng_kernel_instrumentation itype); | |
6dccd6c1 JD |
508 | struct lttng_event *lttng_event_compat_old_create(struct lttng_channel *chan, |
509 | struct lttng_kernel_old_event *old_event_param, | |
510 | void *filter, | |
511 | const struct lttng_event_desc *internal_desc); | |
c0e31d2e | 512 | |
a90917c3 MD |
513 | int lttng_channel_enable(struct lttng_channel *channel); |
514 | int lttng_channel_disable(struct lttng_channel *channel); | |
515 | int lttng_event_enable(struct lttng_event *event); | |
516 | int lttng_event_disable(struct lttng_event *event); | |
e64957da | 517 | |
a90917c3 MD |
518 | void lttng_transport_register(struct lttng_transport *transport); |
519 | void lttng_transport_unregister(struct lttng_transport *transport); | |
11b5a3c2 | 520 | |
360f38ea | 521 | void synchronize_trace(void); |
80996790 | 522 | int lttng_abi_init(void); |
6dccd6c1 | 523 | int lttng_abi_compat_old_init(void); |
80996790 | 524 | void lttng_abi_exit(void); |
6dccd6c1 | 525 | void lttng_abi_compat_old_exit(void); |
1c25284c | 526 | |
a90917c3 MD |
527 | int lttng_probe_register(struct lttng_probe_desc *desc); |
528 | void lttng_probe_unregister(struct lttng_probe_desc *desc); | |
529 | const struct lttng_event_desc *lttng_event_get(const char *name); | |
530 | void lttng_event_put(const struct lttng_event_desc *desc); | |
531 | int lttng_probes_init(void); | |
532 | void lttng_probes_exit(void); | |
1ec65de1 | 533 | |
b3b8072b MD |
534 | int lttng_metadata_output_channel(struct lttng_metadata_stream *stream, |
535 | struct channel *chan); | |
d83004aa | 536 | |
7e6f9ef6 | 537 | int lttng_pid_tracker_get_node_pid(const struct lttng_pid_hash_node *node); |
e0130fab MD |
538 | struct lttng_pid_tracker *lttng_pid_tracker_create(void); |
539 | void lttng_pid_tracker_destroy(struct lttng_pid_tracker *lpf); | |
540 | bool lttng_pid_tracker_lookup(struct lttng_pid_tracker *lpf, int pid); | |
541 | int lttng_pid_tracker_add(struct lttng_pid_tracker *lpf, int pid); | |
542 | int lttng_pid_tracker_del(struct lttng_pid_tracker *lpf, int pid); | |
543 | ||
544 | int lttng_session_track_pid(struct lttng_session *session, int pid); | |
545 | int lttng_session_untrack_pid(struct lttng_session *session, int pid); | |
546 | ||
7e6f9ef6 MD |
547 | int lttng_session_list_tracker_pids(struct lttng_session *session); |
548 | ||
3a523f5b | 549 | #if defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS) |
a90917c3 MD |
550 | int lttng_syscalls_register(struct lttng_channel *chan, void *filter); |
551 | int lttng_syscalls_unregister(struct lttng_channel *chan); | |
80f87dd2 MD |
552 | int lttng_syscall_filter_enable(struct lttng_channel *chan, |
553 | const char *name); | |
554 | int lttng_syscall_filter_disable(struct lttng_channel *chan, | |
555 | const char *name); | |
12e579db MD |
556 | long lttng_channel_syscall_mask(struct lttng_channel *channel, |
557 | struct lttng_kernel_syscall_mask __user *usyscall_mask); | |
082d4946 | 558 | int lttng_abi_syscall_list(void); |
1ec65de1 | 559 | #else |
a90917c3 | 560 | static inline int lttng_syscalls_register(struct lttng_channel *chan, void *filter) |
1ec65de1 MD |
561 | { |
562 | return -ENOSYS; | |
563 | } | |
564 | ||
a90917c3 | 565 | static inline int lttng_syscalls_unregister(struct lttng_channel *chan) |
1ec65de1 MD |
566 | { |
567 | return 0; | |
568 | } | |
80f87dd2 | 569 | |
082d4946 | 570 | static inline |
80f87dd2 MD |
571 | int lttng_syscall_filter_enable(struct lttng_channel *chan, |
572 | const char *name) | |
573 | { | |
574 | return -ENOSYS; | |
575 | } | |
576 | ||
082d4946 | 577 | static inline |
80f87dd2 MD |
578 | int lttng_syscall_filter_disable(struct lttng_channel *chan, |
579 | const char *name) | |
580 | { | |
581 | return -ENOSYS; | |
582 | } | |
12e579db | 583 | |
082d4946 | 584 | static inline |
12e579db MD |
585 | long lttng_channel_syscall_mask(struct lttng_channel *channel, |
586 | struct lttng_kernel_syscall_mask __user *usyscall_mask) | |
587 | { | |
588 | return -ENOSYS; | |
589 | } | |
082d4946 MD |
590 | |
591 | static inline | |
592 | int lttng_abi_syscall_list(void) | |
593 | { | |
594 | return -ENOSYS; | |
595 | } | |
1ec65de1 MD |
596 | #endif |
597 | ||
07dfc1d0 MD |
598 | void lttng_filter_sync_state(struct lttng_bytecode_runtime *runtime); |
599 | int lttng_enabler_attach_bytecode(struct lttng_enabler *enabler, | |
600 | struct lttng_kernel_filter_bytecode __user *bytecode); | |
601 | ||
602 | extern struct lttng_ctx *lttng_static_ctx; | |
603 | ||
604 | int lttng_context_init(void); | |
605 | void lttng_context_exit(void); | |
2dccf128 | 606 | struct lttng_ctx_field *lttng_append_context(struct lttng_ctx **ctx); |
a9dd15da | 607 | void lttng_context_update(struct lttng_ctx *ctx); |
44252f0f | 608 | int lttng_find_context(struct lttng_ctx *ctx, const char *name); |
07dfc1d0 | 609 | int lttng_get_context_index(struct lttng_ctx *ctx, const char *name); |
8289661d MD |
610 | void lttng_remove_context_field(struct lttng_ctx **ctx, |
611 | struct lttng_ctx_field *field); | |
2dccf128 | 612 | void lttng_destroy_context(struct lttng_ctx *ctx); |
8070f5c0 | 613 | int lttng_add_pid_to_ctx(struct lttng_ctx **ctx); |
a2563e83 | 614 | int lttng_add_procname_to_ctx(struct lttng_ctx **ctx); |
a8ad3613 | 615 | int lttng_add_prio_to_ctx(struct lttng_ctx **ctx); |
53f1f0ca | 616 | int lttng_add_nice_to_ctx(struct lttng_ctx **ctx); |
b64bc438 MD |
617 | int lttng_add_vpid_to_ctx(struct lttng_ctx **ctx); |
618 | int lttng_add_tid_to_ctx(struct lttng_ctx **ctx); | |
619 | int lttng_add_vtid_to_ctx(struct lttng_ctx **ctx); | |
620 | int lttng_add_ppid_to_ctx(struct lttng_ctx **ctx); | |
621 | int lttng_add_vppid_to_ctx(struct lttng_ctx **ctx); | |
975da2c0 | 622 | int lttng_add_hostname_to_ctx(struct lttng_ctx **ctx); |
41c3c24e | 623 | #if defined(CONFIG_PERF_EVENTS) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,33)) |
c24a0d71 MD |
624 | int lttng_add_perf_counter_to_ctx(uint32_t type, |
625 | uint64_t config, | |
626 | const char *name, | |
627 | struct lttng_ctx **ctx); | |
1d443b34 MD |
628 | #else |
629 | static inline | |
630 | int lttng_add_perf_counter_to_ctx(uint32_t type, | |
631 | uint64_t config, | |
632 | const char *name, | |
633 | struct lttng_ctx **ctx) | |
634 | { | |
635 | return -ENOSYS; | |
636 | } | |
637 | #endif | |
02119ee5 | 638 | |
0c956676 MD |
639 | int lttng_logger_init(void); |
640 | void lttng_logger_exit(void); | |
641 | ||
c337ddc2 MD |
642 | extern int lttng_statedump_start(struct lttng_session *session); |
643 | ||
acd614cc | 644 | #ifdef CONFIG_KPROBES |
f17701fb MD |
645 | int lttng_kprobes_register(const char *name, |
646 | const char *symbol_name, | |
647 | uint64_t offset, | |
648 | uint64_t addr, | |
a90917c3 MD |
649 | struct lttng_event *event); |
650 | void lttng_kprobes_unregister(struct lttng_event *event); | |
651 | void lttng_kprobes_destroy_private(struct lttng_event *event); | |
acd614cc MD |
652 | #else |
653 | static inline | |
654 | int lttng_kprobes_register(const char *name, | |
655 | const char *symbol_name, | |
656 | uint64_t offset, | |
657 | uint64_t addr, | |
a90917c3 | 658 | struct lttng_event *event) |
acd614cc MD |
659 | { |
660 | return -ENOSYS; | |
661 | } | |
662 | ||
25f53c39 | 663 | static inline |
a90917c3 | 664 | void lttng_kprobes_unregister(struct lttng_event *event) |
acd614cc MD |
665 | { |
666 | } | |
edeb3137 MD |
667 | |
668 | static inline | |
a90917c3 | 669 | void lttng_kprobes_destroy_private(struct lttng_event *event) |
edeb3137 MD |
670 | { |
671 | } | |
acd614cc | 672 | #endif |
d6d808f3 | 673 | |
7371f44c MD |
674 | #ifdef CONFIG_KRETPROBES |
675 | int lttng_kretprobes_register(const char *name, | |
676 | const char *symbol_name, | |
677 | uint64_t offset, | |
678 | uint64_t addr, | |
a90917c3 MD |
679 | struct lttng_event *event_entry, |
680 | struct lttng_event *event_exit); | |
681 | void lttng_kretprobes_unregister(struct lttng_event *event); | |
682 | void lttng_kretprobes_destroy_private(struct lttng_event *event); | |
7371f44c MD |
683 | #else |
684 | static inline | |
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) | |
7371f44c MD |
691 | { |
692 | return -ENOSYS; | |
693 | } | |
694 | ||
695 | static inline | |
a90917c3 | 696 | void lttng_kretprobes_unregister(struct lttng_event *event) |
7371f44c MD |
697 | { |
698 | } | |
699 | ||
700 | static inline | |
a90917c3 | 701 | void lttng_kretprobes_destroy_private(struct lttng_event *event) |
7371f44c MD |
702 | { |
703 | } | |
704 | #endif | |
705 | ||
e0a7a7c4 MD |
706 | #ifdef CONFIG_DYNAMIC_FTRACE |
707 | int lttng_ftrace_register(const char *name, | |
708 | const char *symbol_name, | |
a90917c3 MD |
709 | struct lttng_event *event); |
710 | void lttng_ftrace_unregister(struct lttng_event *event); | |
711 | void lttng_ftrace_destroy_private(struct lttng_event *event); | |
e0a7a7c4 MD |
712 | #else |
713 | static inline | |
714 | int lttng_ftrace_register(const char *name, | |
715 | const char *symbol_name, | |
a90917c3 | 716 | struct lttng_event *event) |
e0a7a7c4 | 717 | { |
acd614cc | 718 | return -ENOSYS; |
e0a7a7c4 MD |
719 | } |
720 | ||
721 | static inline | |
a90917c3 | 722 | void lttng_ftrace_unregister(struct lttng_event *event) |
e0a7a7c4 MD |
723 | { |
724 | } | |
edeb3137 MD |
725 | |
726 | static inline | |
a90917c3 | 727 | void lttng_ftrace_destroy_private(struct lttng_event *event) |
edeb3137 MD |
728 | { |
729 | } | |
e0a7a7c4 | 730 | #endif |
271b6681 | 731 | |
3db41b2c | 732 | int lttng_calibrate(struct lttng_kernel_calibrate *calibrate); |
57105fc2 | 733 | |
271b6681 | 734 | extern const struct file_operations lttng_tracepoint_list_fops; |
2d2464bd | 735 | extern const struct file_operations lttng_syscall_list_fops; |
271b6681 | 736 | |
ef200626 MD |
737 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) |
738 | #define TRACEPOINT_HAS_DATA_ARG | |
739 | #endif | |
740 | ||
a90917c3 | 741 | #endif /* _LTTNG_EVENTS_H */ |