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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; |
0d1a681e MD |
170 | }; |
171 | ||
172 | struct lttng_event_desc { | |
c0edae1d MD |
173 | const char *name; |
174 | void *probe_callback; | |
0d1a681e MD |
175 | const struct lttng_event_ctx *ctx; /* context */ |
176 | const struct lttng_event_field *fields; /* event payload */ | |
c0edae1d | 177 | unsigned int nr_fields; |
dc7f600a | 178 | struct module *owner; |
c0edae1d MD |
179 | }; |
180 | ||
85a9ca7f | 181 | struct lttng_probe_desc { |
f7bdf4db | 182 | const struct lttng_event_desc **event_desc; |
85a9ca7f MD |
183 | unsigned int nr_events; |
184 | struct list_head head; /* chain registered probes */ | |
185 | }; | |
186 | ||
7371f44c MD |
187 | struct lttng_krp; /* Kretprobe handling */ |
188 | ||
85a9ca7f | 189 | /* |
a90917c3 | 190 | * lttng_event structure is referred to by the tracing fast path. It must be |
85a9ca7f MD |
191 | * kept small. |
192 | */ | |
a90917c3 | 193 | struct lttng_event { |
85a9ca7f | 194 | unsigned int id; |
a90917c3 | 195 | struct lttng_channel *chan; |
e64957da | 196 | int enabled; |
d3dbe23c | 197 | const struct lttng_event_desc *desc; |
85a9ca7f | 198 | void *filter; |
f1676205 | 199 | struct lttng_ctx *ctx; |
38d024ae | 200 | enum lttng_kernel_instrumentation instrumentation; |
d6d808f3 MD |
201 | union { |
202 | struct { | |
203 | struct kprobe kp; | |
204 | char *symbol_name; | |
205 | } kprobe; | |
7371f44c MD |
206 | struct { |
207 | struct lttng_krp *lttng_krp; | |
208 | char *symbol_name; | |
209 | } kretprobe; | |
e0a7a7c4 MD |
210 | struct { |
211 | char *symbol_name; | |
212 | } ftrace; | |
d6d808f3 | 213 | } u; |
85a9ca7f | 214 | struct list_head list; /* Event list */ |
9cccf98a | 215 | unsigned int metadata_dumped:1; |
85a9ca7f MD |
216 | }; |
217 | ||
a90917c3 | 218 | struct lttng_channel_ops { |
85a9ca7f | 219 | struct channel *(*channel_create)(const char *name, |
a90917c3 | 220 | struct lttng_channel *lttng_chan, |
85a9ca7f MD |
221 | void *buf_addr, |
222 | size_t subbuf_size, size_t num_subbuf, | |
223 | unsigned int switch_timer_interval, | |
224 | unsigned int read_timer_interval); | |
225 | void (*channel_destroy)(struct channel *chan); | |
226 | struct lib_ring_buffer *(*buffer_read_open)(struct channel *chan); | |
f71ecafa | 227 | int (*buffer_has_read_closed_stream)(struct channel *chan); |
85a9ca7f | 228 | void (*buffer_read_close)(struct lib_ring_buffer *buf); |
4e1f08f4 | 229 | int (*event_reserve)(struct lib_ring_buffer_ctx *ctx, |
64c796d8 | 230 | uint32_t event_id); |
85a9ca7f MD |
231 | void (*event_commit)(struct lib_ring_buffer_ctx *ctx); |
232 | void (*event_write)(struct lib_ring_buffer_ctx *ctx, const void *src, | |
233 | size_t len); | |
4ea00e4f JD |
234 | void (*event_write_from_user)(struct lib_ring_buffer_ctx *ctx, |
235 | const void *src, size_t len); | |
58aa5d24 MD |
236 | void (*event_memset)(struct lib_ring_buffer_ctx *ctx, |
237 | int c, size_t len); | |
1ec3f75a MD |
238 | /* |
239 | * packet_avail_size returns the available size in the current | |
240 | * packet. Note that the size returned is only a hint, since it | |
241 | * may change due to concurrent writes. | |
242 | */ | |
243 | size_t (*packet_avail_size)(struct channel *chan); | |
71c1d843 | 244 | wait_queue_head_t *(*get_writer_buf_wait_queue)(struct channel *chan, int cpu); |
24cedcfe MD |
245 | wait_queue_head_t *(*get_hp_wait_queue)(struct channel *chan); |
246 | int (*is_finalized)(struct channel *chan); | |
254ec7bc | 247 | int (*is_disabled)(struct channel *chan); |
3b731ab1 JD |
248 | int (*timestamp_begin) (const struct lib_ring_buffer_config *config, |
249 | struct lib_ring_buffer *bufb, | |
250 | uint64_t *timestamp_begin); | |
251 | int (*timestamp_end) (const struct lib_ring_buffer_config *config, | |
252 | struct lib_ring_buffer *bufb, | |
253 | uint64_t *timestamp_end); | |
254 | int (*events_discarded) (const struct lib_ring_buffer_config *config, | |
255 | struct lib_ring_buffer *bufb, | |
256 | uint64_t *events_discarded); | |
257 | int (*content_size) (const struct lib_ring_buffer_config *config, | |
258 | struct lib_ring_buffer *bufb, | |
259 | uint64_t *content_size); | |
260 | int (*packet_size) (const struct lib_ring_buffer_config *config, | |
261 | struct lib_ring_buffer *bufb, | |
262 | uint64_t *packet_size); | |
263 | int (*stream_id) (const struct lib_ring_buffer_config *config, | |
264 | struct lib_ring_buffer *bufb, | |
265 | uint64_t *stream_id); | |
85a9ca7f MD |
266 | }; |
267 | ||
a90917c3 | 268 | struct lttng_transport { |
a33c9927 MD |
269 | char *name; |
270 | struct module *owner; | |
271 | struct list_head node; | |
a90917c3 | 272 | struct lttng_channel_ops ops; |
a33c9927 MD |
273 | }; |
274 | ||
a90917c3 | 275 | struct lttng_channel { |
c099397a | 276 | unsigned int id; |
85a9ca7f | 277 | struct channel *chan; /* Channel buffers */ |
e64957da | 278 | int enabled; |
f1676205 | 279 | struct lttng_ctx *ctx; |
85a9ca7f | 280 | /* Event ID management */ |
a90917c3 | 281 | struct lttng_session *session; |
85a9ca7f MD |
282 | struct file *file; /* File associated to channel */ |
283 | unsigned int free_event_id; /* Next event ID to allocate */ | |
284 | struct list_head list; /* Channel list */ | |
a90917c3 MD |
285 | struct lttng_channel_ops *ops; |
286 | struct lttng_transport *transport; | |
287 | struct lttng_event **sc_table; /* for syscall tracing */ | |
288 | struct lttng_event **compat_sc_table; | |
289 | struct lttng_event *sc_unknown; /* for unknown syscalls */ | |
290 | struct lttng_event *sc_compat_unknown; | |
291 | struct lttng_event *sc_exit; /* for syscall exit */ | |
9115fbdc | 292 | int header_type; /* 0: unset, 1: compact, 2: large */ |
d83004aa | 293 | enum channel_type channel_type; |
9cccf98a | 294 | unsigned int metadata_dumped:1; |
85a9ca7f MD |
295 | }; |
296 | ||
d83004aa JD |
297 | struct lttng_metadata_stream { |
298 | void *priv; /* Ring buffer private data */ | |
299 | struct lttng_metadata_cache *metadata_cache; | |
f613e3e6 MD |
300 | unsigned int metadata_in; /* Bytes read from the cache */ |
301 | unsigned int metadata_out; /* Bytes consumed from stream */ | |
d83004aa JD |
302 | int finalized; /* Has channel been finalized */ |
303 | wait_queue_head_t read_wait; /* Reader buffer-level wait queue */ | |
304 | struct list_head list; /* Stream list */ | |
b3b8072b | 305 | struct lttng_transport *transport; |
d83004aa JD |
306 | }; |
307 | ||
a90917c3 | 308 | struct lttng_session { |
85a9ca7f | 309 | int active; /* Is trace session active ? */ |
8070f5c0 | 310 | int been_active; /* Has trace session been active ? */ |
85a9ca7f MD |
311 | struct file *file; /* File associated to session */ |
312 | struct list_head chan; /* Channel list head */ | |
313 | struct list_head events; /* Event list head */ | |
314 | struct list_head list; /* Session list */ | |
c099397a | 315 | unsigned int free_chan_id; /* Next chan ID to allocate */ |
d793d5e1 | 316 | uuid_le uuid; /* Trace session unique ID */ |
d83004aa | 317 | struct lttng_metadata_cache *metadata_cache; |
9cccf98a | 318 | unsigned int metadata_dumped:1; |
85a9ca7f MD |
319 | }; |
320 | ||
d83004aa JD |
321 | struct lttng_metadata_cache { |
322 | char *data; /* Metadata cache */ | |
323 | unsigned int cache_alloc; /* Metadata allocated size (bytes) */ | |
324 | unsigned int metadata_written; /* Number of bytes written in metadata cache */ | |
325 | struct kref refcount; /* Metadata cache usage */ | |
326 | struct list_head metadata_stream; /* Metadata stream list */ | |
327 | }; | |
328 | ||
a90917c3 MD |
329 | struct lttng_session *lttng_session_create(void); |
330 | int lttng_session_enable(struct lttng_session *session); | |
331 | int lttng_session_disable(struct lttng_session *session); | |
332 | void lttng_session_destroy(struct lttng_session *session); | |
d83004aa | 333 | void metadata_cache_destroy(struct kref *kref); |
4e3c1b9b | 334 | |
a90917c3 | 335 | struct lttng_channel *lttng_channel_create(struct lttng_session *session, |
5dbbdb43 MD |
336 | const char *transport_name, |
337 | void *buf_addr, | |
338 | size_t subbuf_size, size_t num_subbuf, | |
339 | unsigned int switch_timer_interval, | |
d83004aa JD |
340 | unsigned int read_timer_interval, |
341 | enum channel_type channel_type); | |
a90917c3 | 342 | struct lttng_channel *lttng_global_channel_create(struct lttng_session *session, |
4e3c1b9b MD |
343 | int overwrite, void *buf_addr, |
344 | size_t subbuf_size, size_t num_subbuf, | |
345 | unsigned int switch_timer_interval, | |
346 | unsigned int read_timer_interval); | |
4e3c1b9b | 347 | |
d83004aa | 348 | void lttng_metadata_channel_destroy(struct lttng_channel *chan); |
a90917c3 | 349 | struct lttng_event *lttng_event_create(struct lttng_channel *chan, |
d6d808f3 | 350 | struct lttng_kernel_event *event_param, |
259b6cb3 MD |
351 | void *filter, |
352 | const struct lttng_event_desc *internal_desc); | |
6dccd6c1 JD |
353 | struct lttng_event *lttng_event_compat_old_create(struct lttng_channel *chan, |
354 | struct lttng_kernel_old_event *old_event_param, | |
355 | void *filter, | |
356 | const struct lttng_event_desc *internal_desc); | |
c0e31d2e | 357 | |
a90917c3 MD |
358 | int lttng_channel_enable(struct lttng_channel *channel); |
359 | int lttng_channel_disable(struct lttng_channel *channel); | |
360 | int lttng_event_enable(struct lttng_event *event); | |
361 | int lttng_event_disable(struct lttng_event *event); | |
e64957da | 362 | |
a90917c3 MD |
363 | void lttng_transport_register(struct lttng_transport *transport); |
364 | void lttng_transport_unregister(struct lttng_transport *transport); | |
11b5a3c2 | 365 | |
360f38ea | 366 | void synchronize_trace(void); |
80996790 | 367 | int lttng_abi_init(void); |
6dccd6c1 | 368 | int lttng_abi_compat_old_init(void); |
80996790 | 369 | void lttng_abi_exit(void); |
6dccd6c1 | 370 | void lttng_abi_compat_old_exit(void); |
1c25284c | 371 | |
a90917c3 MD |
372 | int lttng_probe_register(struct lttng_probe_desc *desc); |
373 | void lttng_probe_unregister(struct lttng_probe_desc *desc); | |
374 | const struct lttng_event_desc *lttng_event_get(const char *name); | |
375 | void lttng_event_put(const struct lttng_event_desc *desc); | |
376 | int lttng_probes_init(void); | |
377 | void lttng_probes_exit(void); | |
1ec65de1 | 378 | |
b3b8072b MD |
379 | int lttng_metadata_output_channel(struct lttng_metadata_stream *stream, |
380 | struct channel *chan); | |
d83004aa | 381 | |
3a523f5b | 382 | #if defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS) |
a90917c3 MD |
383 | int lttng_syscalls_register(struct lttng_channel *chan, void *filter); |
384 | int lttng_syscalls_unregister(struct lttng_channel *chan); | |
1ec65de1 | 385 | #else |
a90917c3 | 386 | static inline int lttng_syscalls_register(struct lttng_channel *chan, void *filter) |
1ec65de1 MD |
387 | { |
388 | return -ENOSYS; | |
389 | } | |
390 | ||
a90917c3 | 391 | static inline int lttng_syscalls_unregister(struct lttng_channel *chan) |
1ec65de1 MD |
392 | { |
393 | return 0; | |
394 | } | |
395 | #endif | |
396 | ||
2dccf128 | 397 | struct lttng_ctx_field *lttng_append_context(struct lttng_ctx **ctx); |
44252f0f | 398 | int lttng_find_context(struct lttng_ctx *ctx, const char *name); |
8289661d MD |
399 | void lttng_remove_context_field(struct lttng_ctx **ctx, |
400 | struct lttng_ctx_field *field); | |
2dccf128 | 401 | void lttng_destroy_context(struct lttng_ctx *ctx); |
8070f5c0 | 402 | int lttng_add_pid_to_ctx(struct lttng_ctx **ctx); |
a2563e83 | 403 | int lttng_add_procname_to_ctx(struct lttng_ctx **ctx); |
a8ad3613 | 404 | int lttng_add_prio_to_ctx(struct lttng_ctx **ctx); |
53f1f0ca | 405 | int lttng_add_nice_to_ctx(struct lttng_ctx **ctx); |
b64bc438 MD |
406 | int lttng_add_vpid_to_ctx(struct lttng_ctx **ctx); |
407 | int lttng_add_tid_to_ctx(struct lttng_ctx **ctx); | |
408 | int lttng_add_vtid_to_ctx(struct lttng_ctx **ctx); | |
409 | int lttng_add_ppid_to_ctx(struct lttng_ctx **ctx); | |
410 | int lttng_add_vppid_to_ctx(struct lttng_ctx **ctx); | |
975da2c0 | 411 | int lttng_add_hostname_to_ctx(struct lttng_ctx **ctx); |
41c3c24e | 412 | #if defined(CONFIG_PERF_EVENTS) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,33)) |
c24a0d71 MD |
413 | int lttng_add_perf_counter_to_ctx(uint32_t type, |
414 | uint64_t config, | |
415 | const char *name, | |
416 | struct lttng_ctx **ctx); | |
1d443b34 MD |
417 | #else |
418 | static inline | |
419 | int lttng_add_perf_counter_to_ctx(uint32_t type, | |
420 | uint64_t config, | |
421 | const char *name, | |
422 | struct lttng_ctx **ctx) | |
423 | { | |
424 | return -ENOSYS; | |
425 | } | |
426 | #endif | |
02119ee5 | 427 | |
c337ddc2 MD |
428 | extern int lttng_statedump_start(struct lttng_session *session); |
429 | ||
acd614cc | 430 | #ifdef CONFIG_KPROBES |
f17701fb MD |
431 | int lttng_kprobes_register(const char *name, |
432 | const char *symbol_name, | |
433 | uint64_t offset, | |
434 | uint64_t addr, | |
a90917c3 MD |
435 | struct lttng_event *event); |
436 | void lttng_kprobes_unregister(struct lttng_event *event); | |
437 | void lttng_kprobes_destroy_private(struct lttng_event *event); | |
acd614cc MD |
438 | #else |
439 | static inline | |
440 | int lttng_kprobes_register(const char *name, | |
441 | const char *symbol_name, | |
442 | uint64_t offset, | |
443 | uint64_t addr, | |
a90917c3 | 444 | struct lttng_event *event) |
acd614cc MD |
445 | { |
446 | return -ENOSYS; | |
447 | } | |
448 | ||
25f53c39 | 449 | static inline |
a90917c3 | 450 | void lttng_kprobes_unregister(struct lttng_event *event) |
acd614cc MD |
451 | { |
452 | } | |
edeb3137 MD |
453 | |
454 | static inline | |
a90917c3 | 455 | void lttng_kprobes_destroy_private(struct lttng_event *event) |
edeb3137 MD |
456 | { |
457 | } | |
acd614cc | 458 | #endif |
d6d808f3 | 459 | |
7371f44c MD |
460 | #ifdef CONFIG_KRETPROBES |
461 | int lttng_kretprobes_register(const char *name, | |
462 | const char *symbol_name, | |
463 | uint64_t offset, | |
464 | uint64_t addr, | |
a90917c3 MD |
465 | struct lttng_event *event_entry, |
466 | struct lttng_event *event_exit); | |
467 | void lttng_kretprobes_unregister(struct lttng_event *event); | |
468 | void lttng_kretprobes_destroy_private(struct lttng_event *event); | |
7371f44c MD |
469 | #else |
470 | static inline | |
471 | int lttng_kretprobes_register(const char *name, | |
472 | const char *symbol_name, | |
473 | uint64_t offset, | |
474 | uint64_t addr, | |
a90917c3 MD |
475 | struct lttng_event *event_entry, |
476 | struct lttng_event *event_exit) | |
7371f44c MD |
477 | { |
478 | return -ENOSYS; | |
479 | } | |
480 | ||
481 | static inline | |
a90917c3 | 482 | void lttng_kretprobes_unregister(struct lttng_event *event) |
7371f44c MD |
483 | { |
484 | } | |
485 | ||
486 | static inline | |
a90917c3 | 487 | void lttng_kretprobes_destroy_private(struct lttng_event *event) |
7371f44c MD |
488 | { |
489 | } | |
490 | #endif | |
491 | ||
e0a7a7c4 MD |
492 | #ifdef CONFIG_DYNAMIC_FTRACE |
493 | int lttng_ftrace_register(const char *name, | |
494 | const char *symbol_name, | |
a90917c3 MD |
495 | struct lttng_event *event); |
496 | void lttng_ftrace_unregister(struct lttng_event *event); | |
497 | void lttng_ftrace_destroy_private(struct lttng_event *event); | |
e0a7a7c4 MD |
498 | #else |
499 | static inline | |
500 | int lttng_ftrace_register(const char *name, | |
501 | const char *symbol_name, | |
a90917c3 | 502 | struct lttng_event *event) |
e0a7a7c4 | 503 | { |
acd614cc | 504 | return -ENOSYS; |
e0a7a7c4 MD |
505 | } |
506 | ||
507 | static inline | |
a90917c3 | 508 | void lttng_ftrace_unregister(struct lttng_event *event) |
e0a7a7c4 MD |
509 | { |
510 | } | |
edeb3137 MD |
511 | |
512 | static inline | |
a90917c3 | 513 | void lttng_ftrace_destroy_private(struct lttng_event *event) |
edeb3137 MD |
514 | { |
515 | } | |
e0a7a7c4 | 516 | #endif |
271b6681 | 517 | |
3db41b2c | 518 | int lttng_calibrate(struct lttng_kernel_calibrate *calibrate); |
57105fc2 | 519 | |
271b6681 MD |
520 | extern const struct file_operations lttng_tracepoint_list_fops; |
521 | ||
ef200626 MD |
522 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) |
523 | #define TRACEPOINT_HAS_DATA_ARG | |
524 | #endif | |
525 | ||
a90917c3 | 526 | #endif /* _LTTNG_EVENTS_H */ |