Commit | Line | Data |
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1c324e59 | 1 | /* |
e92f3e28 | 2 | * Copyright (c) 2011-2012 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
1c324e59 | 3 | * |
e92f3e28 MD |
4 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
5 | * of this software and associated documentation files (the "Software"), to deal | |
6 | * in the Software without restriction, including without limitation the rights | |
7 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
8 | * copies of the Software, and to permit persons to whom the Software is | |
9 | * furnished to do so, subject to the following conditions: | |
1c324e59 | 10 | * |
e92f3e28 MD |
11 | * The above copyright notice and this permission notice shall be included in |
12 | * all copies or substantial portions of the Software. | |
d2428e87 MD |
13 | * |
14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
17 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
18 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
19 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
20 | * SOFTWARE. | |
1c324e59 MD |
21 | */ |
22 | ||
23 | #include <stdio.h> | |
7d381d6e | 24 | #include <stdlib.h> |
1c324e59 | 25 | #include <urcu/compiler.h> |
f488575f | 26 | #include <urcu/rculist.h> |
1c324e59 | 27 | #include <lttng/ust-events.h> |
1c324e59 | 28 | #include <lttng/ringbuffer-config.h> |
a8909ba5 | 29 | #include <lttng/ust-compiler.h> |
000b8662 | 30 | #include <lttng/tracepoint.h> |
714c16c4 | 31 | #include <byteswap.h> |
44c72f10 | 32 | #include <string.h> |
1c324e59 | 33 | |
000b8662 MD |
34 | #undef tp_list_for_each_entry_rcu |
35 | #define tp_list_for_each_entry_rcu(pos, head, member) \ | |
36 | for (pos = cds_list_entry(tp_rcu_dereference_bp((head)->next), __typeof__(*pos), member); \ | |
37 | &pos->member != (head); \ | |
38 | pos = cds_list_entry(tp_rcu_dereference_bp(pos->member.next), __typeof__(*pos), member)) | |
39 | ||
1c324e59 MD |
40 | /* |
41 | * TRACEPOINT_EVENT_CLASS declares a class of tracepoints receiving the | |
42 | * same arguments and having the same field layout. | |
43 | * | |
44 | * TRACEPOINT_EVENT_INSTANCE declares an instance of a tracepoint, with | |
45 | * its own provider and name. It refers to a class (template). | |
46 | * | |
47 | * TRACEPOINT_EVENT declared both a class and an instance and does a | |
48 | * direct mapping from the instance to the class. | |
49 | */ | |
50 | ||
51 | #undef TRACEPOINT_EVENT | |
52 | #define TRACEPOINT_EVENT(_provider, _name, _args, _fields) \ | |
53 | TRACEPOINT_EVENT_CLASS(_provider, _name, \ | |
54 | _TP_PARAMS(_args), \ | |
55 | _TP_PARAMS(_fields)) \ | |
56 | TRACEPOINT_EVENT_INSTANCE(_provider, _name, _name, \ | |
68755429 | 57 | _TP_PARAMS(_args)) |
1c324e59 MD |
58 | |
59 | /* Helpers */ | |
60 | #define _TP_ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) | |
61 | ||
62 | #define _tp_max_t(type, x, y) \ | |
63 | ({ \ | |
64 | type __max1 = (x); \ | |
65 | type __max2 = (y); \ | |
66 | __max1 > __max2 ? __max1: __max2; \ | |
67 | }) | |
68 | ||
69 | /* | |
70 | * Stage 0 of tracepoint event generation. | |
71 | * | |
72 | * Check that each TRACEPOINT_EVENT provider argument match the | |
73 | * TRACEPOINT_PROVIDER by creating dummy callbacks. | |
74 | */ | |
75 | ||
76 | /* Reset all macros within TRACEPOINT_EVENT */ | |
77 | #include <lttng/ust-tracepoint-event-reset.h> | |
78 | ||
7ce6b21d PW |
79 | static inline lttng_ust_notrace |
80 | void _TP_COMBINE_TOKENS(__tracepoint_provider_mismatch_, TRACEPOINT_PROVIDER)(void); | |
1c324e59 MD |
81 | static inline |
82 | void _TP_COMBINE_TOKENS(__tracepoint_provider_mismatch_, TRACEPOINT_PROVIDER)(void) | |
83 | { | |
84 | } | |
85 | ||
86 | #undef TRACEPOINT_EVENT_CLASS | |
87 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
88 | __tracepoint_provider_mismatch_##_provider(); | |
89 | ||
90 | #undef TRACEPOINT_EVENT_INSTANCE | |
91 | #define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
92 | __tracepoint_provider_mismatch_##_provider(); | |
93 | ||
7ce6b21d PW |
94 | static inline lttng_ust_notrace |
95 | void _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)(void); | |
e8bd1da7 | 96 | static inline |
1c324e59 MD |
97 | void _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)(void) |
98 | { | |
99 | #include TRACEPOINT_INCLUDE | |
100 | } | |
101 | ||
f56cd1d5 MD |
102 | /* |
103 | * Stage 0.1 of tracepoint event generation. | |
104 | * | |
105 | * Check that each TRACEPOINT_EVENT provider:name does not exceed the | |
106 | * tracepoint name length limit. | |
107 | */ | |
108 | ||
109 | /* Reset all macros within TRACEPOINT_EVENT */ | |
110 | #include <lttng/ust-tracepoint-event-reset.h> | |
111 | ||
112 | #undef TRACEPOINT_EVENT_INSTANCE | |
113 | #define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
114 | static const char \ | |
115 | __tp_name_len_check##_provider##___##_name[LTTNG_UST_SYM_NAME_LEN] \ | |
116 | __attribute__((unused)) = \ | |
117 | #_provider ":" #_name; | |
118 | ||
119 | #include TRACEPOINT_INCLUDE | |
120 | ||
1c324e59 MD |
121 | /* |
122 | * Stage 1 of tracepoint event generation. | |
123 | * | |
124 | * Create event field type metadata section. | |
125 | * Each event produce an array of fields. | |
126 | */ | |
127 | ||
128 | /* Reset all macros within TRACEPOINT_EVENT */ | |
129 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 MD |
130 | #include <lttng/ust-tracepoint-event-write.h> |
131 | #include <lttng/ust-tracepoint-event-nowrite.h> | |
1c324e59 | 132 | |
4774c8f3 | 133 | #undef _ctf_integer_ext |
180901e6 | 134 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
135 | { \ |
136 | .name = #_item, \ | |
137 | .type = __type_integer(_type, _byte_order, _base, none),\ | |
180901e6 | 138 | .nowrite = _nowrite, \ |
1c324e59 MD |
139 | }, |
140 | ||
4774c8f3 | 141 | #undef _ctf_float |
180901e6 | 142 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
143 | { \ |
144 | .name = #_item, \ | |
145 | .type = __type_float(_type), \ | |
180901e6 | 146 | .nowrite = _nowrite, \ |
1c324e59 MD |
147 | }, |
148 | ||
4774c8f3 | 149 | #undef _ctf_array_encoded |
180901e6 | 150 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _nowrite) \ |
1c324e59 MD |
151 | { \ |
152 | .name = #_item, \ | |
153 | .type = \ | |
154 | { \ | |
155 | .atype = atype_array, \ | |
46d52200 | 156 | .u = \ |
1c324e59 | 157 | { \ |
46d52200 ZT |
158 | .array = \ |
159 | { \ | |
160 | .elem_type = __type_integer(_type, BYTE_ORDER, 10, _encoding), \ | |
161 | .length = _length, \ | |
162 | } \ | |
163 | } \ | |
1c324e59 | 164 | }, \ |
180901e6 | 165 | .nowrite = _nowrite, \ |
1c324e59 MD |
166 | }, |
167 | ||
4774c8f3 | 168 | #undef _ctf_sequence_encoded |
f968510a PP |
169 | #define _ctf_sequence_encoded(_type, _item, _src, \ |
170 | _length_type, _src_length, _encoding, _nowrite, \ | |
171 | _elem_type_base) \ | |
1c324e59 MD |
172 | { \ |
173 | .name = #_item, \ | |
174 | .type = \ | |
175 | { \ | |
176 | .atype = atype_sequence, \ | |
46d52200 | 177 | .u = \ |
1c324e59 | 178 | { \ |
46d52200 ZT |
179 | .sequence = \ |
180 | { \ | |
181 | .length_type = __type_integer(_length_type, BYTE_ORDER, 10, none), \ | |
f968510a | 182 | .elem_type = __type_integer(_type, BYTE_ORDER, _elem_type_base, _encoding), \ |
46d52200 | 183 | }, \ |
1c324e59 MD |
184 | }, \ |
185 | }, \ | |
180901e6 | 186 | .nowrite = _nowrite, \ |
1c324e59 MD |
187 | }, |
188 | ||
4774c8f3 | 189 | #undef _ctf_string |
180901e6 | 190 | #define _ctf_string(_item, _src, _nowrite) \ |
1c324e59 MD |
191 | { \ |
192 | .name = #_item, \ | |
193 | .type = \ | |
194 | { \ | |
195 | .atype = atype_string, \ | |
46d52200 ZT |
196 | .u = \ |
197 | { \ | |
198 | .basic = { .string = { .encoding = lttng_encode_UTF8 } } \ | |
199 | }, \ | |
1c324e59 | 200 | }, \ |
180901e6 | 201 | .nowrite = _nowrite, \ |
1c324e59 MD |
202 | }, |
203 | ||
204 | #undef TP_FIELDS | |
2eda209b | 205 | #define TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */ |
1c324e59 MD |
206 | |
207 | #undef TRACEPOINT_EVENT_CLASS | |
208 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
209 | static const struct lttng_event_field __event_fields___##_provider##___##_name[] = { \ | |
210 | _fields \ | |
0febf018 | 211 | ctf_integer(int, dummy, 0) /* Dummy, C99 forbids 0-len array. */ \ |
1c324e59 MD |
212 | }; |
213 | ||
214 | #include TRACEPOINT_INCLUDE | |
215 | ||
216 | /* | |
217 | * Stage 2 of tracepoint event generation. | |
218 | * | |
219 | * Create probe callback prototypes. | |
220 | */ | |
221 | ||
222 | /* Reset all macros within TRACEPOINT_EVENT */ | |
223 | #include <lttng/ust-tracepoint-event-reset.h> | |
224 | ||
225 | #undef TP_ARGS | |
2eda209b | 226 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
227 | |
228 | #undef TRACEPOINT_EVENT_CLASS | |
229 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
230 | static void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)); | |
231 | ||
232 | #include TRACEPOINT_INCLUDE | |
233 | ||
234 | /* | |
235 | * Stage 3 of tracepoint event generation. | |
236 | * | |
1c324e59 MD |
237 | * Create static inline function that calculates event size. |
238 | */ | |
239 | ||
240 | /* Reset all macros within TRACEPOINT_EVENT */ | |
241 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 | 242 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 243 | |
4774c8f3 | 244 | #undef _ctf_integer_ext |
180901e6 | 245 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
246 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
247 | __event_len += sizeof(_type); | |
248 | ||
4774c8f3 | 249 | #undef _ctf_float |
180901e6 | 250 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
251 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
252 | __event_len += sizeof(_type); | |
253 | ||
4774c8f3 | 254 | #undef _ctf_array_encoded |
180901e6 | 255 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _nowrite) \ |
1c324e59 MD |
256 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
257 | __event_len += sizeof(_type) * (_length); | |
258 | ||
4774c8f3 | 259 | #undef _ctf_sequence_encoded |
f968510a PP |
260 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ |
261 | _src_length, _encoding, _nowrite, _elem_type_base) \ | |
1c324e59 MD |
262 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_length_type)); \ |
263 | __event_len += sizeof(_length_type); \ | |
264 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ | |
265 | __dynamic_len[__dynamic_len_idx] = (_src_length); \ | |
266 | __event_len += sizeof(_type) * __dynamic_len[__dynamic_len_idx]; \ | |
267 | __dynamic_len_idx++; | |
268 | ||
4774c8f3 | 269 | #undef _ctf_string |
180901e6 | 270 | #define _ctf_string(_item, _src, _nowrite) \ |
1c324e59 MD |
271 | __event_len += __dynamic_len[__dynamic_len_idx++] = strlen(_src) + 1; |
272 | ||
273 | #undef TP_ARGS | |
2eda209b | 274 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
275 | |
276 | #undef TP_FIELDS | |
2eda209b | 277 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 MD |
278 | |
279 | #undef TRACEPOINT_EVENT_CLASS | |
a8909ba5 PW |
280 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ |
281 | static inline lttng_ust_notrace \ | |
282 | size_t __event_get_size__##_provider##___##_name(size_t *__dynamic_len, _TP_ARGS_DATA_PROTO(_args)); \ | |
283 | static inline \ | |
284 | size_t __event_get_size__##_provider##___##_name(size_t *__dynamic_len, _TP_ARGS_DATA_PROTO(_args)) \ | |
1c324e59 MD |
285 | { \ |
286 | size_t __event_len = 0; \ | |
287 | unsigned int __dynamic_len_idx = 0; \ | |
288 | \ | |
289 | if (0) \ | |
290 | (void) __dynamic_len_idx; /* don't warn if unused */ \ | |
291 | _fields \ | |
292 | return __event_len; \ | |
293 | } | |
294 | ||
295 | #include TRACEPOINT_INCLUDE | |
296 | ||
1ddfd641 MD |
297 | /* |
298 | * Stage 3.1 of tracepoint event generation. | |
299 | * | |
300 | * Create static inline function that layout the filter stack data. | |
4774c8f3 | 301 | * We make both write and nowrite data available to the filter. |
1ddfd641 MD |
302 | */ |
303 | ||
304 | /* Reset all macros within TRACEPOINT_EVENT */ | |
305 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 MD |
306 | #include <lttng/ust-tracepoint-event-write.h> |
307 | #include <lttng/ust-tracepoint-event-nowrite.h> | |
1ddfd641 | 308 | |
4774c8f3 | 309 | #undef _ctf_integer_ext |
180901e6 | 310 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
fa099471 | 311 | if (lttng_is_signed_type(_type)) { \ |
3ebeea0d MD |
312 | int64_t __ctf_tmp_int64; \ |
313 | switch (sizeof(_type)) { \ | |
314 | case 1: \ | |
315 | { \ | |
316 | union { _type t; int8_t v; } __tmp = { (_type) (_src) }; \ | |
317 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ | |
318 | break; \ | |
319 | } \ | |
320 | case 2: \ | |
321 | { \ | |
322 | union { _type t; int16_t v; } __tmp = { (_type) (_src) }; \ | |
714c16c4 MD |
323 | if (_byte_order != BYTE_ORDER) \ |
324 | __tmp.v = bswap_16(__tmp.v); \ | |
3ebeea0d MD |
325 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
326 | break; \ | |
327 | } \ | |
328 | case 4: \ | |
329 | { \ | |
330 | union { _type t; int32_t v; } __tmp = { (_type) (_src) }; \ | |
714c16c4 MD |
331 | if (_byte_order != BYTE_ORDER) \ |
332 | __tmp.v = bswap_32(__tmp.v); \ | |
3ebeea0d MD |
333 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
334 | break; \ | |
335 | } \ | |
336 | case 8: \ | |
337 | { \ | |
338 | union { _type t; int64_t v; } __tmp = { (_type) (_src) }; \ | |
714c16c4 MD |
339 | if (_byte_order != BYTE_ORDER) \ |
340 | __tmp.v = bswap_64(__tmp.v); \ | |
3ebeea0d MD |
341 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
342 | break; \ | |
343 | } \ | |
344 | default: \ | |
345 | abort(); \ | |
346 | }; \ | |
fa099471 MD |
347 | memcpy(__stack_data, &__ctf_tmp_int64, sizeof(int64_t)); \ |
348 | } else { \ | |
3ebeea0d MD |
349 | uint64_t __ctf_tmp_uint64; \ |
350 | switch (sizeof(_type)) { \ | |
351 | case 1: \ | |
352 | { \ | |
353 | union { _type t; uint8_t v; } __tmp = { (_type) (_src) }; \ | |
354 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ | |
355 | break; \ | |
356 | } \ | |
357 | case 2: \ | |
358 | { \ | |
359 | union { _type t; uint16_t v; } __tmp = { (_type) (_src) }; \ | |
714c16c4 MD |
360 | if (_byte_order != BYTE_ORDER) \ |
361 | __tmp.v = bswap_16(__tmp.v); \ | |
3ebeea0d MD |
362 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
363 | break; \ | |
364 | } \ | |
365 | case 4: \ | |
366 | { \ | |
367 | union { _type t; uint32_t v; } __tmp = { (_type) (_src) }; \ | |
714c16c4 MD |
368 | if (_byte_order != BYTE_ORDER) \ |
369 | __tmp.v = bswap_32(__tmp.v); \ | |
3ebeea0d MD |
370 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
371 | break; \ | |
372 | } \ | |
373 | case 8: \ | |
374 | { \ | |
375 | union { _type t; uint64_t v; } __tmp = { (_type) (_src) }; \ | |
714c16c4 MD |
376 | if (_byte_order != BYTE_ORDER) \ |
377 | __tmp.v = bswap_64(__tmp.v); \ | |
3ebeea0d MD |
378 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
379 | break; \ | |
380 | } \ | |
381 | default: \ | |
382 | abort(); \ | |
383 | }; \ | |
fa099471 MD |
384 | memcpy(__stack_data, &__ctf_tmp_uint64, sizeof(uint64_t)); \ |
385 | } \ | |
1ddfd641 MD |
386 | __stack_data += sizeof(int64_t); |
387 | ||
4774c8f3 | 388 | #undef _ctf_float |
180901e6 | 389 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
fa099471 MD |
390 | { \ |
391 | double __ctf_tmp_double = (double) (_type) (_src); \ | |
392 | memcpy(__stack_data, &__ctf_tmp_double, sizeof(double)); \ | |
393 | __stack_data += sizeof(double); \ | |
394 | } | |
1ddfd641 | 395 | |
4774c8f3 | 396 | #undef _ctf_array_encoded |
180901e6 | 397 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _nowrite) \ |
fa099471 MD |
398 | { \ |
399 | unsigned long __ctf_tmp_ulong = (unsigned long) (_length); \ | |
59034aab | 400 | const void *__ctf_tmp_ptr = (_src); \ |
fa099471 MD |
401 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ |
402 | __stack_data += sizeof(unsigned long); \ | |
b1239ad6 MD |
403 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
404 | __stack_data += sizeof(void *); \ | |
fa099471 | 405 | } |
1ddfd641 | 406 | |
4774c8f3 MD |
407 | #undef _ctf_sequence_encoded |
408 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
f968510a | 409 | _src_length, _encoding, _nowrite, _elem_type_base) \ |
fa099471 MD |
410 | { \ |
411 | unsigned long __ctf_tmp_ulong = (unsigned long) (_src_length); \ | |
59034aab | 412 | const void *__ctf_tmp_ptr = (_src); \ |
fa099471 MD |
413 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ |
414 | __stack_data += sizeof(unsigned long); \ | |
b1239ad6 MD |
415 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
416 | __stack_data += sizeof(void *); \ | |
fa099471 | 417 | } |
1ddfd641 | 418 | |
4774c8f3 | 419 | #undef _ctf_string |
180901e6 | 420 | #define _ctf_string(_item, _src, _nowrite) \ |
fa099471 | 421 | { \ |
59034aab | 422 | const void *__ctf_tmp_ptr = (_src); \ |
b1239ad6 MD |
423 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
424 | __stack_data += sizeof(void *); \ | |
fa099471 | 425 | } |
1ddfd641 MD |
426 | |
427 | #undef TP_ARGS | |
428 | #define TP_ARGS(...) __VA_ARGS__ | |
429 | ||
430 | #undef TP_FIELDS | |
431 | #define TP_FIELDS(...) __VA_ARGS__ | |
432 | ||
433 | #undef TRACEPOINT_EVENT_CLASS | |
434 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
435 | static inline \ | |
436 | void __event_prepare_filter_stack__##_provider##___##_name(char *__stack_data,\ | |
437 | _TP_ARGS_DATA_PROTO(_args)) \ | |
438 | { \ | |
439 | _fields \ | |
440 | } | |
441 | ||
442 | #include TRACEPOINT_INCLUDE | |
443 | ||
444 | ||
445 | ||
1c324e59 | 446 | /* |
df854e41 | 447 | * Stage 4 of tracepoint event generation. |
1c324e59 MD |
448 | * |
449 | * Create static inline function that calculates event payload alignment. | |
450 | */ | |
451 | ||
452 | /* Reset all macros within TRACEPOINT_EVENT */ | |
453 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 | 454 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 455 | |
4774c8f3 | 456 | #undef _ctf_integer_ext |
180901e6 | 457 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
458 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); |
459 | ||
4774c8f3 | 460 | #undef _ctf_float |
180901e6 | 461 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
462 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); |
463 | ||
4774c8f3 | 464 | #undef _ctf_array_encoded |
180901e6 | 465 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _nowrite) \ |
1c324e59 MD |
466 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); |
467 | ||
4774c8f3 | 468 | #undef _ctf_sequence_encoded |
f968510a PP |
469 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ |
470 | _src_length, _encoding, _nowrite, _elem_type_base) \ | |
1c324e59 MD |
471 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_length_type)); \ |
472 | __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type)); | |
473 | ||
4774c8f3 | 474 | #undef _ctf_string |
180901e6 | 475 | #define _ctf_string(_item, _src, _nowrite) |
1c324e59 MD |
476 | |
477 | #undef TP_ARGS | |
2eda209b | 478 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
479 | |
480 | #undef TP_FIELDS | |
2eda209b | 481 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 MD |
482 | |
483 | #undef TRACEPOINT_EVENT_CLASS | |
484 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
a8909ba5 PW |
485 | static inline lttng_ust_notrace \ |
486 | size_t __event_get_align__##_provider##___##_name(_TP_ARGS_PROTO(_args)); \ | |
1c324e59 MD |
487 | static inline \ |
488 | size_t __event_get_align__##_provider##___##_name(_TP_ARGS_PROTO(_args)) \ | |
489 | { \ | |
490 | size_t __event_align = 1; \ | |
491 | _fields \ | |
492 | return __event_align; \ | |
493 | } | |
494 | ||
495 | #include TRACEPOINT_INCLUDE | |
496 | ||
497 | ||
498 | /* | |
df854e41 | 499 | * Stage 5 of tracepoint event generation. |
1c324e59 MD |
500 | * |
501 | * Create the probe function. This function calls event size calculation | |
502 | * and writes event data into the buffer. | |
503 | */ | |
504 | ||
505 | /* Reset all macros within TRACEPOINT_EVENT */ | |
506 | #include <lttng/ust-tracepoint-event-reset.h> | |
4774c8f3 | 507 | #include <lttng/ust-tracepoint-event-write.h> |
1c324e59 | 508 | |
4774c8f3 | 509 | #undef _ctf_integer_ext |
180901e6 | 510 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \ |
1c324e59 MD |
511 | { \ |
512 | _type __tmp = (_src); \ | |
513 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\ | |
514 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ | |
515 | } | |
516 | ||
4774c8f3 | 517 | #undef _ctf_float |
180901e6 | 518 | #define _ctf_float(_type, _item, _src, _nowrite) \ |
1c324e59 MD |
519 | { \ |
520 | _type __tmp = (_src); \ | |
521 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\ | |
522 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ | |
523 | } | |
524 | ||
4774c8f3 | 525 | #undef _ctf_array_encoded |
180901e6 | 526 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _nowrite) \ |
1c324e59 MD |
527 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ |
528 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); | |
529 | ||
4774c8f3 MD |
530 | #undef _ctf_sequence_encoded |
531 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
f968510a | 532 | _src_length, _encoding, _nowrite, _elem_type_base) \ |
1c324e59 | 533 | { \ |
d71b57b9 | 534 | _length_type __tmpl = __stackvar.__dynamic_len[__dynamic_len_idx]; \ |
1c324e59 MD |
535 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
536 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
537 | } \ | |
538 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
539 | __chan->ops->event_write(&__ctx, _src, \ | |
540 | sizeof(_type) * __get_dynamic_len(dest)); | |
541 | ||
a44c74d9 MD |
542 | /* |
543 | * __chan->ops->u.has_strcpy is a flag letting us know if the LTTng-UST | |
544 | * tracepoint provider ABI implements event_strcpy. This dynamic check | |
545 | * can be removed when the tracepoint provider ABI moves to 2. | |
546 | */ | |
547 | #if (LTTNG_UST_PROVIDER_MAJOR > 1) | |
548 | #error "Tracepoint probe provider major version has changed. Please remove dynamic check for has_strcpy." | |
549 | #endif | |
550 | ||
4774c8f3 | 551 | #undef _ctf_string |
180901e6 | 552 | #define _ctf_string(_item, _src, _nowrite) \ |
1c324e59 | 553 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(*(_src))); \ |
a44c74d9 MD |
554 | if (__chan->ops->u.has_strcpy) \ |
555 | __chan->ops->event_strcpy(&__ctx, _src, \ | |
556 | __get_dynamic_len(dest)); \ | |
557 | else \ | |
558 | __chan->ops->event_write(&__ctx, _src, \ | |
559 | __get_dynamic_len(dest)); | |
1c324e59 MD |
560 | |
561 | /* Beware: this get len actually consumes the len value */ | |
562 | #undef __get_dynamic_len | |
d71b57b9 | 563 | #define __get_dynamic_len(field) __stackvar.__dynamic_len[__dynamic_len_idx++] |
1c324e59 MD |
564 | |
565 | #undef TP_ARGS | |
2eda209b | 566 | #define TP_ARGS(...) __VA_ARGS__ |
1c324e59 MD |
567 | |
568 | #undef TP_FIELDS | |
2eda209b | 569 | #define TP_FIELDS(...) __VA_ARGS__ |
1c324e59 | 570 | |
95c25348 PW |
571 | /* |
572 | * For state dump, check that "session" argument (mandatory) matches the | |
573 | * session this event belongs to. Ensures that we write state dump data only | |
574 | * into the started session, not into all sessions. | |
575 | */ | |
576 | #undef _TP_SESSION_CHECK | |
577 | #ifdef TP_SESSION_CHECK | |
578 | #define _TP_SESSION_CHECK(session, csession) (session == csession) | |
579 | #else /* TP_SESSION_CHECK */ | |
580 | #define _TP_SESSION_CHECK(session, csession) 1 | |
581 | #endif /* TP_SESSION_CHECK */ | |
582 | ||
800ceaa5 MD |
583 | /* |
584 | * Use of __builtin_return_address(0) sometimes seems to cause stack | |
585 | * corruption on 32-bit PowerPC. Disable this feature on that | |
586 | * architecture for now by always using the NULL value for the ip | |
587 | * context. | |
588 | */ | |
5dadb547 MD |
589 | #undef _TP_IP_PARAM |
590 | #ifdef TP_IP_PARAM | |
e1d09f9e | 591 | #define _TP_IP_PARAM(x) (x) |
5dadb547 | 592 | #else /* TP_IP_PARAM */ |
800ceaa5 MD |
593 | |
594 | #if defined(__PPC__) && !defined(__PPC64__) | |
595 | #define _TP_IP_PARAM(x) NULL | |
596 | #else /* #if defined(__PPC__) && !defined(__PPC64__) */ | |
e1d09f9e | 597 | #define _TP_IP_PARAM(x) __builtin_return_address(0) |
800ceaa5 MD |
598 | #endif /* #else #if defined(__PPC__) && !defined(__PPC64__) */ |
599 | ||
5dadb547 MD |
600 | #endif /* TP_IP_PARAM */ |
601 | ||
1ddfd641 MD |
602 | /* |
603 | * Using twice size for filter stack data to hold size and pointer for | |
604 | * each field (worse case). For integers, max size required is 64-bit. | |
605 | * Same for double-precision floats. Those fit within | |
606 | * 2*sizeof(unsigned long) for all supported architectures. | |
61ce3223 | 607 | * Perform UNION (||) of filter runtime list. |
1ddfd641 | 608 | */ |
1c324e59 MD |
609 | #undef TRACEPOINT_EVENT_CLASS |
610 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
a8909ba5 PW |
611 | static lttng_ust_notrace \ |
612 | void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)); \ | |
613 | static \ | |
614 | void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)) \ | |
1c324e59 | 615 | { \ |
46d52200 | 616 | struct lttng_event *__event = (struct lttng_event *) __tp_data; \ |
7dd08bec | 617 | struct lttng_channel *__chan = __event->chan; \ |
f280cb51 | 618 | struct lttng_ust_lib_ring_buffer_ctx __ctx; \ |
1c324e59 MD |
619 | size_t __event_len, __event_align; \ |
620 | size_t __dynamic_len_idx = 0; \ | |
d71b57b9 | 621 | union { \ |
0febf018 MD |
622 | size_t __dynamic_len[_TP_ARRAY_SIZE(__event_fields___##_provider##___##_name) - 1]; \ |
623 | char __filter_stack_data[2 * sizeof(unsigned long) * (_TP_ARRAY_SIZE(__event_fields___##_provider##___##_name) - 1)]; \ | |
d71b57b9 | 624 | } __stackvar; \ |
1c324e59 MD |
625 | int __ret; \ |
626 | \ | |
627 | if (0) \ | |
628 | (void) __dynamic_len_idx; /* don't warn if unused */ \ | |
95c25348 PW |
629 | if (!_TP_SESSION_CHECK(session, __chan->session)) \ |
630 | return; \ | |
1c324e59 MD |
631 | if (caa_unlikely(!CMM_ACCESS_ONCE(__chan->session->active))) \ |
632 | return; \ | |
633 | if (caa_unlikely(!CMM_ACCESS_ONCE(__chan->enabled))) \ | |
634 | return; \ | |
635 | if (caa_unlikely(!CMM_ACCESS_ONCE(__event->enabled))) \ | |
636 | return; \ | |
1b436e01 MD |
637 | if (caa_unlikely(!TP_RCU_LINK_TEST())) \ |
638 | return; \ | |
e58095ef | 639 | if (caa_unlikely(!cds_list_empty(&__event->bytecode_runtime_head))) { \ |
f488575f | 640 | struct lttng_bytecode_runtime *bc_runtime; \ |
dcdeaff0 | 641 | int __filter_record = __event->has_enablers_without_bytecode; \ |
f488575f | 642 | \ |
1ddfd641 | 643 | __event_prepare_filter_stack__##_provider##___##_name(__stackvar.__filter_stack_data, \ |
f488575f | 644 | _TP_ARGS_DATA_VAR(_args)); \ |
000b8662 | 645 | tp_list_for_each_entry_rcu(bc_runtime, &__event->bytecode_runtime_head, node) { \ |
61ce3223 | 646 | if (caa_unlikely(bc_runtime->filter(bc_runtime, \ |
8a92ed2a MD |
647 | __stackvar.__filter_stack_data) & LTTNG_FILTER_RECORD_FLAG)) \ |
648 | __filter_record = 1; \ | |
f488575f | 649 | } \ |
8a92ed2a | 650 | if (caa_likely(!__filter_record)) \ |
61ce3223 | 651 | return; \ |
1ddfd641 MD |
652 | } \ |
653 | __event_len = __event_get_size__##_provider##___##_name(__stackvar.__dynamic_len, \ | |
1c324e59 MD |
654 | _TP_ARGS_DATA_VAR(_args)); \ |
655 | __event_align = __event_get_align__##_provider##___##_name(_TP_ARGS_VAR(_args)); \ | |
656 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, __event, __event_len, \ | |
657 | __event_align, -1, __chan->handle); \ | |
e1d09f9e | 658 | __ctx.ip = _TP_IP_PARAM(TP_IP_PARAM); \ |
1c324e59 MD |
659 | __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ |
660 | if (__ret < 0) \ | |
661 | return; \ | |
662 | _fields \ | |
663 | __chan->ops->event_commit(&__ctx); \ | |
664 | } | |
665 | ||
666 | #include TRACEPOINT_INCLUDE | |
667 | ||
668 | #undef __get_dynamic_len | |
669 | ||
68755429 MD |
670 | /* |
671 | * Stage 5.1 of tracepoint event generation. | |
672 | * | |
673 | * Create probe signature | |
674 | */ | |
675 | ||
676 | /* Reset all macros within TRACEPOINT_EVENT */ | |
677 | #include <lttng/ust-tracepoint-event-reset.h> | |
678 | ||
679 | #undef TP_ARGS | |
2eda209b | 680 | #define TP_ARGS(...) __VA_ARGS__ |
9eb06182 MD |
681 | |
682 | #define _TP_EXTRACT_STRING2(...) #__VA_ARGS__ | |
68755429 MD |
683 | |
684 | #undef TRACEPOINT_EVENT_CLASS | |
685 | #define TRACEPOINT_EVENT_CLASS(_provider, _name, _args, _fields) \ | |
686 | const char __tp_event_signature___##_provider##___##_name[] = \ | |
9eb06182 | 687 | _TP_EXTRACT_STRING2(_args); |
68755429 MD |
688 | |
689 | #include TRACEPOINT_INCLUDE | |
690 | ||
9eb06182 MD |
691 | #undef _TP_EXTRACT_STRING2 |
692 | ||
05ceaafd | 693 | /* |
882a56d7 | 694 | * Stage 6 of tracepoint event generation. |
1c324e59 | 695 | * |
df854e41 MD |
696 | * Tracepoint loglevel mapping definition generation. We generate a |
697 | * symbol for each mapping for a provider/event to ensure at most a 1 to | |
698 | * 1 mapping between events and loglevels. If the symbol is repeated, | |
699 | * the compiler will complain. | |
05ceaafd MD |
700 | */ |
701 | ||
702 | /* Reset all macros within TRACEPOINT_EVENT */ | |
703 | #include <lttng/ust-tracepoint-event-reset.h> | |
704 | ||
705 | #undef TRACEPOINT_LOGLEVEL | |
457a6b58 MD |
706 | #define TRACEPOINT_LOGLEVEL(__provider, __name, __loglevel) \ |
707 | static const int _loglevel_value___##__provider##___##__name = __loglevel; \ | |
708 | static const int *_loglevel___##__provider##___##__name = \ | |
709 | &_loglevel_value___##__provider##___##__name; | |
df854e41 MD |
710 | |
711 | #include TRACEPOINT_INCLUDE | |
712 | ||
6ddc916d MD |
713 | /* |
714 | * Stage 6.1 of tracepoint event generation. | |
715 | * | |
716 | * Tracepoint UML URI info. | |
717 | */ | |
718 | ||
719 | /* Reset all macros within TRACEPOINT_EVENT */ | |
720 | #include <lttng/ust-tracepoint-event-reset.h> | |
721 | ||
722 | #undef TRACEPOINT_MODEL_EMF_URI | |
723 | #define TRACEPOINT_MODEL_EMF_URI(__provider, __name, __uri) \ | |
724 | static const char *_model_emf_uri___##__provider##___##__name = __uri; | |
725 | ||
726 | #include TRACEPOINT_INCLUDE | |
727 | ||
df854e41 | 728 | /* |
882a56d7 | 729 | * Stage 7.1 of tracepoint event generation. |
df854e41 MD |
730 | * |
731 | * Create events description structures. We use a weakref because | |
732 | * loglevels are optional. If not declared, the event will point to the | |
733 | * a loglevel that contains NULL. | |
734 | */ | |
735 | ||
736 | /* Reset all macros within TRACEPOINT_EVENT */ | |
737 | #include <lttng/ust-tracepoint-event-reset.h> | |
738 | ||
739 | #undef TRACEPOINT_EVENT_INSTANCE | |
740 | #define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
882a56d7 MD |
741 | static const int * \ |
742 | __ref_loglevel___##_provider##___##_name \ | |
743 | __attribute__((weakref ("_loglevel___" #_provider "___" #_name))); \ | |
6ddc916d MD |
744 | static const char * \ |
745 | __ref_model_emf_uri___##_provider##___##_name \ | |
746 | __attribute__((weakref ("_model_emf_uri___" #_provider "___" #_name)));\ | |
df854e41 | 747 | const struct lttng_event_desc __event_desc___##_provider##_##_name = { \ |
df854e41 | 748 | .name = #_provider ":" #_name, \ |
fbdeb5ec | 749 | .probe_callback = (void (*)(void)) &__event_probe__##_provider##___##_template,\ |
46d52200 ZT |
750 | .ctx = NULL, \ |
751 | .fields = __event_fields___##_provider##___##_template, \ | |
0febf018 | 752 | .nr_fields = _TP_ARRAY_SIZE(__event_fields___##_provider##___##_template) - 1, \ |
882a56d7 | 753 | .loglevel = &__ref_loglevel___##_provider##___##_name, \ |
68755429 | 754 | .signature = __tp_event_signature___##_provider##___##_template, \ |
46d52200 | 755 | .u = { .ext = { .model_emf_uri = &__ref_model_emf_uri___##_provider##___##_name } }, \ |
df854e41 MD |
756 | }; |
757 | ||
758 | #include TRACEPOINT_INCLUDE | |
05ceaafd | 759 | |
df854e41 | 760 | /* |
882a56d7 | 761 | * Stage 7.2 of tracepoint event generation. |
df854e41 MD |
762 | * |
763 | * Create array of events. | |
764 | */ | |
765 | ||
766 | /* Reset all macros within TRACEPOINT_EVENT */ | |
767 | #include <lttng/ust-tracepoint-event-reset.h> | |
768 | ||
769 | #undef TRACEPOINT_EVENT_INSTANCE | |
770 | #define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \ | |
771 | &__event_desc___##_provider##_##_name, | |
772 | ||
773 | static const struct lttng_event_desc *_TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)[] = { | |
05ceaafd | 774 | #include TRACEPOINT_INCLUDE |
0febf018 | 775 | NULL, /* Dummy, C99 forbids 0-len array. */ |
05ceaafd MD |
776 | }; |
777 | ||
df854e41 | 778 | |
05ceaafd | 779 | /* |
882a56d7 | 780 | * Stage 8 of tracepoint event generation. |
05ceaafd MD |
781 | * |
782 | * Create a toplevel descriptor for the whole probe. | |
783 | */ | |
784 | ||
785 | /* non-const because list head will be modified when registered. */ | |
786 | static struct lttng_probe_desc _TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER) = { | |
df854e41 | 787 | .provider = __tp_stringify(TRACEPOINT_PROVIDER), |
05ceaafd | 788 | .event_desc = _TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER), |
0febf018 | 789 | .nr_events = _TP_ARRAY_SIZE(_TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)) - 1, |
46d52200 ZT |
790 | .head = { NULL, NULL }, |
791 | .lazy_init_head = { NULL, NULL }, | |
792 | .lazy = 0, | |
71d31690 MD |
793 | .major = LTTNG_UST_PROVIDER_MAJOR, |
794 | .minor = LTTNG_UST_PROVIDER_MINOR, | |
05ceaafd MD |
795 | }; |
796 | ||
f0cc794d MD |
797 | static int _TP_COMBINE_TOKENS(__probe_register_refcount___, TRACEPOINT_PROVIDER); |
798 | ||
05ceaafd | 799 | /* |
882a56d7 | 800 | * Stage 9 of tracepoint event generation. |
05ceaafd | 801 | * |
1c324e59 | 802 | * Register/unregister probes at module load/unload. |
628e1d81 MD |
803 | * |
804 | * Generate the constructor as an externally visible symbol for use when | |
805 | * linking the probe statically. | |
f0cc794d MD |
806 | * |
807 | * Register refcount is protected by libc dynamic loader mutex. | |
1c324e59 MD |
808 | */ |
809 | ||
810 | /* Reset all macros within TRACEPOINT_EVENT */ | |
811 | #include <lttng/ust-tracepoint-event-reset.h> | |
a8909ba5 PW |
812 | static void lttng_ust_notrace __attribute__((constructor)) |
813 | _TP_COMBINE_TOKENS(__lttng_events_init__, TRACEPOINT_PROVIDER)(void); | |
814 | static void | |
1c324e59 MD |
815 | _TP_COMBINE_TOKENS(__lttng_events_init__, TRACEPOINT_PROVIDER)(void) |
816 | { | |
817 | int ret; | |
818 | ||
f0cc794d MD |
819 | if (_TP_COMBINE_TOKENS(__probe_register_refcount___, |
820 | TRACEPOINT_PROVIDER)++) { | |
821 | return; | |
822 | } | |
e8bd1da7 MD |
823 | /* |
824 | * __tracepoint_provider_check_ ## TRACEPOINT_PROVIDER() is a | |
825 | * static inline function that ensures every probe PROVIDER | |
826 | * argument match the provider within which they appear. It | |
827 | * calls empty static inline functions, and therefore has no | |
828 | * runtime effect. However, if it detects an error, a linker | |
829 | * error will appear. | |
830 | */ | |
831 | _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)(); | |
7dd08bec | 832 | ret = lttng_probe_register(&_TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER)); |
7d381d6e MD |
833 | if (ret) { |
834 | fprintf(stderr, "LTTng-UST: Error (%d) while registering tracepoint probe. Duplicate registration of tracepoint probes having the same name is not allowed.\n", ret); | |
835 | abort(); | |
836 | } | |
1c324e59 MD |
837 | } |
838 | ||
a8909ba5 PW |
839 | static void lttng_ust_notrace __attribute__((destructor)) |
840 | _TP_COMBINE_TOKENS(__lttng_events_exit__, TRACEPOINT_PROVIDER)(void); | |
841 | static void | |
1c324e59 MD |
842 | _TP_COMBINE_TOKENS(__lttng_events_exit__, TRACEPOINT_PROVIDER)(void) |
843 | { | |
f0cc794d MD |
844 | if (--_TP_COMBINE_TOKENS(__probe_register_refcount___, |
845 | TRACEPOINT_PROVIDER)) { | |
846 | return; | |
847 | } | |
7dd08bec | 848 | lttng_probe_unregister(&_TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER)); |
1c324e59 | 849 | } |
628e1d81 MD |
850 | |
851 | int _TP_COMBINE_TOKENS(__tracepoint_provider_, TRACEPOINT_PROVIDER); |