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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 | ||
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 | ||
2001023e MD |
143 | /* |
144 | * We need to keep this perf counter field separately from struct | |
145 | * lttng_ctx_field because cpu hotplug needs fixed-location addresses. | |
146 | */ | |
147 | struct lttng_perf_counter_field { | |
148 | struct notifier_block nb; | |
149 | int hp_enable; | |
150 | struct perf_event_attr *attr; | |
151 | struct perf_event **e; /* per-cpu array */ | |
152 | }; | |
153 | ||
ba1f5986 | 154 | struct lttng_ctx_field { |
8070f5c0 | 155 | struct lttng_event_field event_field; |
f1676205 MD |
156 | size_t (*get_size)(size_t offset); |
157 | void (*record)(struct lttng_ctx_field *field, | |
158 | struct lib_ring_buffer_ctx *ctx, | |
a90917c3 | 159 | struct lttng_channel *chan); |
ba1f5986 | 160 | union { |
2001023e | 161 | struct lttng_perf_counter_field *perf_counter; |
ba1f5986 | 162 | } u; |
2dccf128 | 163 | void (*destroy)(struct lttng_ctx_field *field); |
ba1f5986 MD |
164 | }; |
165 | ||
166 | struct lttng_ctx { | |
833ad6a0 | 167 | struct lttng_ctx_field *fields; |
0d1a681e | 168 | unsigned int nr_fields; |
ba1f5986 | 169 | unsigned int allocated_fields; |
a9dd15da | 170 | size_t largest_align; /* in bytes */ |
0d1a681e MD |
171 | }; |
172 | ||
173 | struct lttng_event_desc { | |
a26a7e4f MD |
174 | const char *name; /* lttng-modules name */ |
175 | const char *kname; /* Linux kernel name (tracepoints) */ | |
c0edae1d | 176 | void *probe_callback; |
0d1a681e MD |
177 | const struct lttng_event_ctx *ctx; /* context */ |
178 | const struct lttng_event_field *fields; /* event payload */ | |
c0edae1d | 179 | unsigned int nr_fields; |
dc7f600a | 180 | struct module *owner; |
c0edae1d MD |
181 | }; |
182 | ||
85a9ca7f | 183 | struct lttng_probe_desc { |
3c997079 | 184 | const char *provider; |
f7bdf4db | 185 | const struct lttng_event_desc **event_desc; |
85a9ca7f MD |
186 | unsigned int nr_events; |
187 | struct list_head head; /* chain registered probes */ | |
3c997079 MD |
188 | struct list_head lazy_init_head; |
189 | int lazy; /* lazy registration */ | |
85a9ca7f MD |
190 | }; |
191 | ||
7371f44c MD |
192 | struct lttng_krp; /* Kretprobe handling */ |
193 | ||
3c997079 MD |
194 | enum lttng_event_type { |
195 | LTTNG_TYPE_EVENT = 0, | |
196 | LTTNG_TYPE_ENABLER = 1, | |
197 | }; | |
198 | ||
199 | /* | |
200 | * Objects in a linked-list of enablers, owned by an event. | |
201 | */ | |
202 | struct lttng_enabler_ref { | |
203 | struct list_head node; /* enabler ref list */ | |
204 | struct lttng_enabler *ref; /* backward ref */ | |
205 | }; | |
206 | ||
85a9ca7f | 207 | /* |
a90917c3 | 208 | * lttng_event structure is referred to by the tracing fast path. It must be |
85a9ca7f MD |
209 | * kept small. |
210 | */ | |
a90917c3 | 211 | struct lttng_event { |
3c997079 | 212 | enum lttng_event_type evtype; /* First field. */ |
85a9ca7f | 213 | unsigned int id; |
a90917c3 | 214 | struct lttng_channel *chan; |
e64957da | 215 | int enabled; |
d3dbe23c | 216 | const struct lttng_event_desc *desc; |
85a9ca7f | 217 | void *filter; |
f1676205 | 218 | struct lttng_ctx *ctx; |
38d024ae | 219 | enum lttng_kernel_instrumentation instrumentation; |
d6d808f3 MD |
220 | union { |
221 | struct { | |
222 | struct kprobe kp; | |
223 | char *symbol_name; | |
224 | } kprobe; | |
7371f44c MD |
225 | struct { |
226 | struct lttng_krp *lttng_krp; | |
227 | char *symbol_name; | |
228 | } kretprobe; | |
e0a7a7c4 MD |
229 | struct { |
230 | char *symbol_name; | |
231 | } ftrace; | |
d6d808f3 | 232 | } u; |
3c997079 | 233 | struct list_head list; /* Event list in session */ |
9cccf98a | 234 | unsigned int metadata_dumped:1; |
3c997079 MD |
235 | |
236 | /* Backward references: list of lttng_enabler_ref (ref to enablers) */ | |
237 | struct list_head enablers_ref_head; | |
238 | struct hlist_node hlist; /* session ht of events */ | |
239 | int registered; /* has reg'd tracepoint probe */ | |
240 | }; | |
241 | ||
242 | enum lttng_enabler_type { | |
243 | LTTNG_ENABLER_WILDCARD, | |
244 | LTTNG_ENABLER_NAME, | |
245 | }; | |
246 | ||
247 | /* | |
248 | * Enabler field, within whatever object is enabling an event. Target of | |
249 | * backward reference. | |
250 | */ | |
251 | struct lttng_enabler { | |
252 | enum lttng_event_type evtype; /* First field. */ | |
253 | ||
254 | enum lttng_enabler_type type; | |
255 | ||
256 | struct list_head node; /* per-session list of enablers */ | |
257 | ||
258 | struct lttng_kernel_event event_param; | |
259 | struct lttng_channel *chan; | |
260 | struct lttng_ctx *ctx; | |
261 | unsigned int enabled:1; | |
85a9ca7f MD |
262 | }; |
263 | ||
a90917c3 | 264 | struct lttng_channel_ops { |
85a9ca7f | 265 | struct channel *(*channel_create)(const char *name, |
a90917c3 | 266 | struct lttng_channel *lttng_chan, |
85a9ca7f MD |
267 | void *buf_addr, |
268 | size_t subbuf_size, size_t num_subbuf, | |
269 | unsigned int switch_timer_interval, | |
270 | unsigned int read_timer_interval); | |
271 | void (*channel_destroy)(struct channel *chan); | |
272 | struct lib_ring_buffer *(*buffer_read_open)(struct channel *chan); | |
f71ecafa | 273 | int (*buffer_has_read_closed_stream)(struct channel *chan); |
85a9ca7f | 274 | void (*buffer_read_close)(struct lib_ring_buffer *buf); |
4e1f08f4 | 275 | int (*event_reserve)(struct lib_ring_buffer_ctx *ctx, |
64c796d8 | 276 | uint32_t event_id); |
85a9ca7f MD |
277 | void (*event_commit)(struct lib_ring_buffer_ctx *ctx); |
278 | void (*event_write)(struct lib_ring_buffer_ctx *ctx, const void *src, | |
279 | size_t len); | |
4ea00e4f JD |
280 | void (*event_write_from_user)(struct lib_ring_buffer_ctx *ctx, |
281 | const void *src, size_t len); | |
58aa5d24 MD |
282 | void (*event_memset)(struct lib_ring_buffer_ctx *ctx, |
283 | int c, size_t len); | |
16f78f3a MD |
284 | void (*event_strcpy)(struct lib_ring_buffer_ctx *ctx, const char *src, |
285 | size_t len); | |
286 | void (*event_strcpy_from_user)(struct lib_ring_buffer_ctx *ctx, | |
287 | const char __user *src, size_t len); | |
1ec3f75a MD |
288 | /* |
289 | * packet_avail_size returns the available size in the current | |
290 | * packet. Note that the size returned is only a hint, since it | |
291 | * may change due to concurrent writes. | |
292 | */ | |
293 | size_t (*packet_avail_size)(struct channel *chan); | |
71c1d843 | 294 | wait_queue_head_t *(*get_writer_buf_wait_queue)(struct channel *chan, int cpu); |
24cedcfe MD |
295 | wait_queue_head_t *(*get_hp_wait_queue)(struct channel *chan); |
296 | int (*is_finalized)(struct channel *chan); | |
254ec7bc | 297 | int (*is_disabled)(struct channel *chan); |
3b731ab1 JD |
298 | int (*timestamp_begin) (const struct lib_ring_buffer_config *config, |
299 | struct lib_ring_buffer *bufb, | |
300 | uint64_t *timestamp_begin); | |
301 | int (*timestamp_end) (const struct lib_ring_buffer_config *config, | |
302 | struct lib_ring_buffer *bufb, | |
303 | uint64_t *timestamp_end); | |
304 | int (*events_discarded) (const struct lib_ring_buffer_config *config, | |
305 | struct lib_ring_buffer *bufb, | |
306 | uint64_t *events_discarded); | |
307 | int (*content_size) (const struct lib_ring_buffer_config *config, | |
308 | struct lib_ring_buffer *bufb, | |
309 | uint64_t *content_size); | |
310 | int (*packet_size) (const struct lib_ring_buffer_config *config, | |
311 | struct lib_ring_buffer *bufb, | |
312 | uint64_t *packet_size); | |
313 | int (*stream_id) (const struct lib_ring_buffer_config *config, | |
314 | struct lib_ring_buffer *bufb, | |
315 | uint64_t *stream_id); | |
2348ca17 JD |
316 | int (*current_timestamp) (const struct lib_ring_buffer_config *config, |
317 | struct lib_ring_buffer *bufb, | |
318 | uint64_t *ts); | |
85a9ca7f MD |
319 | }; |
320 | ||
a90917c3 | 321 | struct lttng_transport { |
a33c9927 MD |
322 | char *name; |
323 | struct module *owner; | |
324 | struct list_head node; | |
a90917c3 | 325 | struct lttng_channel_ops ops; |
a33c9927 MD |
326 | }; |
327 | ||
80f87dd2 MD |
328 | struct lttng_syscall_filter; |
329 | ||
3c997079 MD |
330 | #define LTTNG_EVENT_HT_BITS 12 |
331 | #define LTTNG_EVENT_HT_SIZE (1U << LTTNG_EVENT_HT_BITS) | |
332 | ||
333 | struct lttng_event_ht { | |
334 | struct hlist_head table[LTTNG_EVENT_HT_SIZE]; | |
335 | }; | |
336 | ||
a90917c3 | 337 | struct lttng_channel { |
c099397a | 338 | unsigned int id; |
85a9ca7f | 339 | struct channel *chan; /* Channel buffers */ |
e64957da | 340 | int enabled; |
f1676205 | 341 | struct lttng_ctx *ctx; |
85a9ca7f | 342 | /* Event ID management */ |
a90917c3 | 343 | struct lttng_session *session; |
85a9ca7f MD |
344 | struct file *file; /* File associated to channel */ |
345 | unsigned int free_event_id; /* Next event ID to allocate */ | |
346 | struct list_head list; /* Channel list */ | |
a90917c3 MD |
347 | struct lttng_channel_ops *ops; |
348 | struct lttng_transport *transport; | |
349 | struct lttng_event **sc_table; /* for syscall tracing */ | |
350 | struct lttng_event **compat_sc_table; | |
5b7ac358 MD |
351 | struct lttng_event **sc_exit_table; /* for syscall exit tracing */ |
352 | struct lttng_event **compat_sc_exit_table; | |
a90917c3 MD |
353 | struct lttng_event *sc_unknown; /* for unknown syscalls */ |
354 | struct lttng_event *sc_compat_unknown; | |
5b7ac358 MD |
355 | struct lttng_event *sc_exit_unknown; |
356 | struct lttng_event *compat_sc_exit_unknown; | |
80f87dd2 | 357 | struct lttng_syscall_filter *sc_filter; |
9115fbdc | 358 | int header_type; /* 0: unset, 1: compact, 2: large */ |
d83004aa | 359 | enum channel_type channel_type; |
80f87dd2 MD |
360 | unsigned int metadata_dumped:1, |
361 | sys_enter_registered:1, | |
362 | sys_exit_registered:1, | |
3c997079 MD |
363 | syscall_all:1, |
364 | tstate:1; /* Transient enable state */ | |
85a9ca7f MD |
365 | }; |
366 | ||
d83004aa JD |
367 | struct lttng_metadata_stream { |
368 | void *priv; /* Ring buffer private data */ | |
369 | struct lttng_metadata_cache *metadata_cache; | |
f613e3e6 MD |
370 | unsigned int metadata_in; /* Bytes read from the cache */ |
371 | unsigned int metadata_out; /* Bytes consumed from stream */ | |
d83004aa JD |
372 | int finalized; /* Has channel been finalized */ |
373 | wait_queue_head_t read_wait; /* Reader buffer-level wait queue */ | |
374 | struct list_head list; /* Stream list */ | |
b3b8072b | 375 | struct lttng_transport *transport; |
de23d59d | 376 | struct mutex lock; |
d83004aa JD |
377 | }; |
378 | ||
e0130fab MD |
379 | |
380 | /* | |
381 | * struct lttng_pid_tracker declared in header due to deferencing of *v | |
382 | * in RCU_INITIALIZER(v). | |
383 | */ | |
384 | #define LTTNG_PID_HASH_BITS 6 | |
385 | #define LTTNG_PID_TABLE_SIZE (1 << LTTNG_PID_HASH_BITS) | |
386 | ||
387 | struct lttng_pid_tracker { | |
388 | struct hlist_head pid_hash[LTTNG_PID_TABLE_SIZE]; | |
389 | }; | |
390 | ||
7e6f9ef6 MD |
391 | struct lttng_pid_hash_node { |
392 | struct hlist_node hlist; | |
393 | int pid; | |
394 | }; | |
395 | ||
a90917c3 | 396 | struct lttng_session { |
85a9ca7f | 397 | int active; /* Is trace session active ? */ |
8070f5c0 | 398 | int been_active; /* Has trace session been active ? */ |
85a9ca7f MD |
399 | struct file *file; /* File associated to session */ |
400 | struct list_head chan; /* Channel list head */ | |
401 | struct list_head events; /* Event list head */ | |
402 | struct list_head list; /* Session list */ | |
c099397a | 403 | unsigned int free_chan_id; /* Next chan ID to allocate */ |
d793d5e1 | 404 | uuid_le uuid; /* Trace session unique ID */ |
d83004aa | 405 | struct lttng_metadata_cache *metadata_cache; |
e0130fab | 406 | struct lttng_pid_tracker *pid_tracker; |
3c997079 MD |
407 | unsigned int metadata_dumped:1, |
408 | tstate:1; /* Transient enable state */ | |
409 | /* List of enablers */ | |
410 | struct list_head enablers_head; | |
411 | /* Hash table of events */ | |
412 | struct lttng_event_ht events_ht; | |
85a9ca7f MD |
413 | }; |
414 | ||
d83004aa JD |
415 | struct lttng_metadata_cache { |
416 | char *data; /* Metadata cache */ | |
417 | unsigned int cache_alloc; /* Metadata allocated size (bytes) */ | |
418 | unsigned int metadata_written; /* Number of bytes written in metadata cache */ | |
419 | struct kref refcount; /* Metadata cache usage */ | |
420 | struct list_head metadata_stream; /* Metadata stream list */ | |
a36580d5 | 421 | uuid_le uuid; /* Trace session unique ID (copy) */ |
d83004aa JD |
422 | }; |
423 | ||
3c997079 MD |
424 | void lttng_lock_sessions(void); |
425 | void lttng_unlock_sessions(void); | |
426 | ||
427 | struct list_head *lttng_get_probe_list_head(void); | |
428 | ||
429 | struct lttng_enabler *lttng_enabler_create(enum lttng_enabler_type type, | |
430 | struct lttng_kernel_event *event_param, | |
431 | struct lttng_channel *chan); | |
432 | ||
433 | int lttng_enabler_enable(struct lttng_enabler *enabler); | |
434 | int lttng_enabler_disable(struct lttng_enabler *enabler); | |
435 | int lttng_fix_pending_events(void); | |
436 | int lttng_session_active(void); | |
437 | ||
a90917c3 MD |
438 | struct lttng_session *lttng_session_create(void); |
439 | int lttng_session_enable(struct lttng_session *session); | |
440 | int lttng_session_disable(struct lttng_session *session); | |
441 | void lttng_session_destroy(struct lttng_session *session); | |
d83004aa | 442 | void metadata_cache_destroy(struct kref *kref); |
4e3c1b9b | 443 | |
a90917c3 | 444 | struct lttng_channel *lttng_channel_create(struct lttng_session *session, |
5dbbdb43 MD |
445 | const char *transport_name, |
446 | void *buf_addr, | |
447 | size_t subbuf_size, size_t num_subbuf, | |
448 | unsigned int switch_timer_interval, | |
d83004aa JD |
449 | unsigned int read_timer_interval, |
450 | enum channel_type channel_type); | |
a90917c3 | 451 | struct lttng_channel *lttng_global_channel_create(struct lttng_session *session, |
4e3c1b9b MD |
452 | int overwrite, void *buf_addr, |
453 | size_t subbuf_size, size_t num_subbuf, | |
454 | unsigned int switch_timer_interval, | |
455 | unsigned int read_timer_interval); | |
4e3c1b9b | 456 | |
d83004aa | 457 | void lttng_metadata_channel_destroy(struct lttng_channel *chan); |
a90917c3 | 458 | struct lttng_event *lttng_event_create(struct lttng_channel *chan, |
3c997079 MD |
459 | struct lttng_kernel_event *event_param, |
460 | void *filter, | |
461 | const struct lttng_event_desc *event_desc, | |
462 | enum lttng_kernel_instrumentation itype); | |
33a39a3c MD |
463 | struct lttng_event *_lttng_event_create(struct lttng_channel *chan, |
464 | struct lttng_kernel_event *event_param, | |
465 | void *filter, | |
466 | const struct lttng_event_desc *event_desc, | |
467 | enum lttng_kernel_instrumentation itype); | |
6dccd6c1 JD |
468 | struct lttng_event *lttng_event_compat_old_create(struct lttng_channel *chan, |
469 | struct lttng_kernel_old_event *old_event_param, | |
470 | void *filter, | |
471 | const struct lttng_event_desc *internal_desc); | |
c0e31d2e | 472 | |
a90917c3 MD |
473 | int lttng_channel_enable(struct lttng_channel *channel); |
474 | int lttng_channel_disable(struct lttng_channel *channel); | |
475 | int lttng_event_enable(struct lttng_event *event); | |
476 | int lttng_event_disable(struct lttng_event *event); | |
e64957da | 477 | |
a90917c3 MD |
478 | void lttng_transport_register(struct lttng_transport *transport); |
479 | void lttng_transport_unregister(struct lttng_transport *transport); | |
11b5a3c2 | 480 | |
360f38ea | 481 | void synchronize_trace(void); |
80996790 | 482 | int lttng_abi_init(void); |
6dccd6c1 | 483 | int lttng_abi_compat_old_init(void); |
80996790 | 484 | void lttng_abi_exit(void); |
6dccd6c1 | 485 | void lttng_abi_compat_old_exit(void); |
1c25284c | 486 | |
a90917c3 MD |
487 | int lttng_probe_register(struct lttng_probe_desc *desc); |
488 | void lttng_probe_unregister(struct lttng_probe_desc *desc); | |
489 | const struct lttng_event_desc *lttng_event_get(const char *name); | |
490 | void lttng_event_put(const struct lttng_event_desc *desc); | |
491 | int lttng_probes_init(void); | |
492 | void lttng_probes_exit(void); | |
1ec65de1 | 493 | |
b3b8072b MD |
494 | int lttng_metadata_output_channel(struct lttng_metadata_stream *stream, |
495 | struct channel *chan); | |
d83004aa | 496 | |
7e6f9ef6 | 497 | int lttng_pid_tracker_get_node_pid(const struct lttng_pid_hash_node *node); |
e0130fab MD |
498 | struct lttng_pid_tracker *lttng_pid_tracker_create(void); |
499 | void lttng_pid_tracker_destroy(struct lttng_pid_tracker *lpf); | |
500 | bool lttng_pid_tracker_lookup(struct lttng_pid_tracker *lpf, int pid); | |
501 | int lttng_pid_tracker_add(struct lttng_pid_tracker *lpf, int pid); | |
502 | int lttng_pid_tracker_del(struct lttng_pid_tracker *lpf, int pid); | |
503 | ||
504 | int lttng_session_track_pid(struct lttng_session *session, int pid); | |
505 | int lttng_session_untrack_pid(struct lttng_session *session, int pid); | |
506 | ||
7e6f9ef6 MD |
507 | int lttng_session_list_tracker_pids(struct lttng_session *session); |
508 | ||
3a523f5b | 509 | #if defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS) |
a90917c3 MD |
510 | int lttng_syscalls_register(struct lttng_channel *chan, void *filter); |
511 | int lttng_syscalls_unregister(struct lttng_channel *chan); | |
80f87dd2 MD |
512 | int lttng_syscall_filter_enable(struct lttng_channel *chan, |
513 | const char *name); | |
514 | int lttng_syscall_filter_disable(struct lttng_channel *chan, | |
515 | const char *name); | |
12e579db MD |
516 | long lttng_channel_syscall_mask(struct lttng_channel *channel, |
517 | struct lttng_kernel_syscall_mask __user *usyscall_mask); | |
082d4946 | 518 | int lttng_abi_syscall_list(void); |
1ec65de1 | 519 | #else |
a90917c3 | 520 | static inline int lttng_syscalls_register(struct lttng_channel *chan, void *filter) |
1ec65de1 MD |
521 | { |
522 | return -ENOSYS; | |
523 | } | |
524 | ||
a90917c3 | 525 | static inline int lttng_syscalls_unregister(struct lttng_channel *chan) |
1ec65de1 MD |
526 | { |
527 | return 0; | |
528 | } | |
80f87dd2 | 529 | |
082d4946 | 530 | static inline |
80f87dd2 MD |
531 | int lttng_syscall_filter_enable(struct lttng_channel *chan, |
532 | const char *name) | |
533 | { | |
534 | return -ENOSYS; | |
535 | } | |
536 | ||
082d4946 | 537 | static inline |
80f87dd2 MD |
538 | int lttng_syscall_filter_disable(struct lttng_channel *chan, |
539 | const char *name) | |
540 | { | |
541 | return -ENOSYS; | |
542 | } | |
12e579db | 543 | |
082d4946 | 544 | static inline |
12e579db MD |
545 | long lttng_channel_syscall_mask(struct lttng_channel *channel, |
546 | struct lttng_kernel_syscall_mask __user *usyscall_mask) | |
547 | { | |
548 | return -ENOSYS; | |
549 | } | |
082d4946 MD |
550 | |
551 | static inline | |
552 | int lttng_abi_syscall_list(void) | |
553 | { | |
554 | return -ENOSYS; | |
555 | } | |
1ec65de1 MD |
556 | #endif |
557 | ||
2dccf128 | 558 | struct lttng_ctx_field *lttng_append_context(struct lttng_ctx **ctx); |
a9dd15da | 559 | void lttng_context_update(struct lttng_ctx *ctx); |
44252f0f | 560 | int lttng_find_context(struct lttng_ctx *ctx, const char *name); |
8289661d MD |
561 | void lttng_remove_context_field(struct lttng_ctx **ctx, |
562 | struct lttng_ctx_field *field); | |
2dccf128 | 563 | void lttng_destroy_context(struct lttng_ctx *ctx); |
8070f5c0 | 564 | int lttng_add_pid_to_ctx(struct lttng_ctx **ctx); |
a2563e83 | 565 | int lttng_add_procname_to_ctx(struct lttng_ctx **ctx); |
a8ad3613 | 566 | int lttng_add_prio_to_ctx(struct lttng_ctx **ctx); |
53f1f0ca | 567 | int lttng_add_nice_to_ctx(struct lttng_ctx **ctx); |
b64bc438 MD |
568 | int lttng_add_vpid_to_ctx(struct lttng_ctx **ctx); |
569 | int lttng_add_tid_to_ctx(struct lttng_ctx **ctx); | |
570 | int lttng_add_vtid_to_ctx(struct lttng_ctx **ctx); | |
571 | int lttng_add_ppid_to_ctx(struct lttng_ctx **ctx); | |
572 | int lttng_add_vppid_to_ctx(struct lttng_ctx **ctx); | |
975da2c0 | 573 | int lttng_add_hostname_to_ctx(struct lttng_ctx **ctx); |
41c3c24e | 574 | #if defined(CONFIG_PERF_EVENTS) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,33)) |
c24a0d71 MD |
575 | int lttng_add_perf_counter_to_ctx(uint32_t type, |
576 | uint64_t config, | |
577 | const char *name, | |
578 | struct lttng_ctx **ctx); | |
1d443b34 MD |
579 | #else |
580 | static inline | |
581 | int lttng_add_perf_counter_to_ctx(uint32_t type, | |
582 | uint64_t config, | |
583 | const char *name, | |
584 | struct lttng_ctx **ctx) | |
585 | { | |
586 | return -ENOSYS; | |
587 | } | |
588 | #endif | |
02119ee5 | 589 | |
0c956676 MD |
590 | int lttng_logger_init(void); |
591 | void lttng_logger_exit(void); | |
592 | ||
c337ddc2 MD |
593 | extern int lttng_statedump_start(struct lttng_session *session); |
594 | ||
acd614cc | 595 | #ifdef CONFIG_KPROBES |
f17701fb MD |
596 | int lttng_kprobes_register(const char *name, |
597 | const char *symbol_name, | |
598 | uint64_t offset, | |
599 | uint64_t addr, | |
a90917c3 MD |
600 | struct lttng_event *event); |
601 | void lttng_kprobes_unregister(struct lttng_event *event); | |
602 | void lttng_kprobes_destroy_private(struct lttng_event *event); | |
acd614cc MD |
603 | #else |
604 | static inline | |
605 | int lttng_kprobes_register(const char *name, | |
606 | const char *symbol_name, | |
607 | uint64_t offset, | |
608 | uint64_t addr, | |
a90917c3 | 609 | struct lttng_event *event) |
acd614cc MD |
610 | { |
611 | return -ENOSYS; | |
612 | } | |
613 | ||
25f53c39 | 614 | static inline |
a90917c3 | 615 | void lttng_kprobes_unregister(struct lttng_event *event) |
acd614cc MD |
616 | { |
617 | } | |
edeb3137 MD |
618 | |
619 | static inline | |
a90917c3 | 620 | void lttng_kprobes_destroy_private(struct lttng_event *event) |
edeb3137 MD |
621 | { |
622 | } | |
acd614cc | 623 | #endif |
d6d808f3 | 624 | |
7371f44c MD |
625 | #ifdef CONFIG_KRETPROBES |
626 | int lttng_kretprobes_register(const char *name, | |
627 | const char *symbol_name, | |
628 | uint64_t offset, | |
629 | uint64_t addr, | |
a90917c3 MD |
630 | struct lttng_event *event_entry, |
631 | struct lttng_event *event_exit); | |
632 | void lttng_kretprobes_unregister(struct lttng_event *event); | |
633 | void lttng_kretprobes_destroy_private(struct lttng_event *event); | |
7371f44c MD |
634 | #else |
635 | static inline | |
636 | int lttng_kretprobes_register(const char *name, | |
637 | const char *symbol_name, | |
638 | uint64_t offset, | |
639 | uint64_t addr, | |
a90917c3 MD |
640 | struct lttng_event *event_entry, |
641 | struct lttng_event *event_exit) | |
7371f44c MD |
642 | { |
643 | return -ENOSYS; | |
644 | } | |
645 | ||
646 | static inline | |
a90917c3 | 647 | void lttng_kretprobes_unregister(struct lttng_event *event) |
7371f44c MD |
648 | { |
649 | } | |
650 | ||
651 | static inline | |
a90917c3 | 652 | void lttng_kretprobes_destroy_private(struct lttng_event *event) |
7371f44c MD |
653 | { |
654 | } | |
655 | #endif | |
656 | ||
e0a7a7c4 MD |
657 | #ifdef CONFIG_DYNAMIC_FTRACE |
658 | int lttng_ftrace_register(const char *name, | |
659 | const char *symbol_name, | |
a90917c3 MD |
660 | struct lttng_event *event); |
661 | void lttng_ftrace_unregister(struct lttng_event *event); | |
662 | void lttng_ftrace_destroy_private(struct lttng_event *event); | |
e0a7a7c4 MD |
663 | #else |
664 | static inline | |
665 | int lttng_ftrace_register(const char *name, | |
666 | const char *symbol_name, | |
a90917c3 | 667 | struct lttng_event *event) |
e0a7a7c4 | 668 | { |
acd614cc | 669 | return -ENOSYS; |
e0a7a7c4 MD |
670 | } |
671 | ||
672 | static inline | |
a90917c3 | 673 | void lttng_ftrace_unregister(struct lttng_event *event) |
e0a7a7c4 MD |
674 | { |
675 | } | |
edeb3137 MD |
676 | |
677 | static inline | |
a90917c3 | 678 | void lttng_ftrace_destroy_private(struct lttng_event *event) |
edeb3137 MD |
679 | { |
680 | } | |
e0a7a7c4 | 681 | #endif |
271b6681 | 682 | |
3db41b2c | 683 | int lttng_calibrate(struct lttng_kernel_calibrate *calibrate); |
57105fc2 | 684 | |
271b6681 | 685 | extern const struct file_operations lttng_tracepoint_list_fops; |
2d2464bd | 686 | extern const struct file_operations lttng_syscall_list_fops; |
271b6681 | 687 | |
ef200626 MD |
688 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) |
689 | #define TRACEPOINT_HAS_DATA_ARG | |
690 | #endif | |
691 | ||
a90917c3 | 692 | #endif /* _LTTNG_EVENTS_H */ |