Commit | Line | Data |
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17baffe2 MD |
1 | /* |
2 | * lttng-events.h | |
3 | * | |
4 | * Copyright (C) 2009 Steven Rostedt <rostedt@goodmis.org> | |
886d51a3 | 5 | * Copyright (C) 2009-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
17baffe2 | 6 | * |
886d51a3 MD |
7 | * This library is free software; you can redistribute it and/or |
8 | * modify it under the terms of the GNU Lesser General Public | |
9 | * License as published by the Free Software Foundation; only | |
10 | * version 2.1 of the License. | |
11 | * | |
12 | * This library is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public | |
18 | * License along with this library; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
17baffe2 | 20 | */ |
d28686c1 | 21 | #include <linux/uaccess.h> |
d0dd2ecb | 22 | #include <linux/debugfs.h> |
c0edae1d MD |
23 | #include "lttng.h" |
24 | #include "lttng-types.h" | |
7b8ea3a5 | 25 | #include "lttng-probe-user.h" |
b13f3ebe | 26 | #include "../wrapper/vmalloc.h" /* for wrapper_vmalloc_sync_all() */ |
f3bc08c5 | 27 | #include "../wrapper/ringbuffer/frontend_types.h" |
a90917c3 MD |
28 | #include "../lttng-events.h" |
29 | #include "../lttng-tracer-core.h" | |
40652b65 | 30 | |
40652b65 | 31 | /* |
6db3d13b | 32 | * Macro declarations used for all stages. |
40652b65 MD |
33 | */ |
34 | ||
76e4f017 MD |
35 | /* |
36 | * LTTng name mapping macros. LTTng remaps some of the kernel events to | |
37 | * enforce name-spacing. | |
38 | */ | |
39 | #undef TRACE_EVENT_MAP | |
40 | #define TRACE_EVENT_MAP(name, map, proto, args, tstruct, assign, print) \ | |
41 | DECLARE_EVENT_CLASS(map, \ | |
42 | PARAMS(proto), \ | |
43 | PARAMS(args), \ | |
44 | PARAMS(tstruct), \ | |
45 | PARAMS(assign), \ | |
46 | PARAMS(print)) \ | |
47 | DEFINE_EVENT_MAP(map, name, map, PARAMS(proto), PARAMS(args)) | |
48 | ||
49 | #undef TRACE_EVENT_MAP_NOARGS | |
50 | #define TRACE_EVENT_MAP_NOARGS(name, map, tstruct, assign, print) \ | |
51 | DECLARE_EVENT_CLASS_NOARGS(map, \ | |
52 | PARAMS(tstruct), \ | |
53 | PARAMS(assign), \ | |
54 | PARAMS(print)) \ | |
55 | DEFINE_EVENT_MAP_NOARGS(map, name, map) | |
56 | ||
7ca580f8 MD |
57 | #undef LTTNG_TRACE_EVENT |
58 | #define LTTNG_TRACE_EVENT(name, proto, args, _locvar, _code, tstruct, assign, print) \ | |
59 | LTTNG_DECLARE_EVENT_CLASS(name, \ | |
60 | PARAMS(proto), \ | |
61 | PARAMS(args), \ | |
62 | PARAMS(_locvar), \ | |
63 | PARAMS(_code), \ | |
64 | PARAMS(tstruct), \ | |
65 | PARAMS(assign), \ | |
66 | PARAMS(print)) \ | |
67 | DEFINE_EVENT_MAP(name, name, name, PARAMS(proto), PARAMS(args)) | |
68 | ||
76e4f017 MD |
69 | #undef DEFINE_EVENT_PRINT_MAP |
70 | #define DEFINE_EVENT_PRINT_MAP(template, name, map, proto, args, print) \ | |
71 | DEFINE_EVENT_MAP(template, name, map, PARAMS(proto), PARAMS(args)) | |
72 | ||
73 | /* Callbacks are meaningless to LTTng. */ | |
74 | #undef TRACE_EVENT_FN_MAP | |
75 | #define TRACE_EVENT_FN_MAP(name, map, proto, args, tstruct, \ | |
76 | assign, print, reg, unreg) \ | |
77 | TRACE_EVENT_MAP(name, map, PARAMS(proto), PARAMS(args), \ | |
78 | PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \ | |
79 | ||
80 | #undef TRACE_EVENT_CONDITION_MAP | |
81 | #define TRACE_EVENT_CONDITION_MAP(name, map, proto, args, cond, tstruct, assign, print) \ | |
82 | TRACE_EVENT_MAP(name, map, \ | |
83 | PARAMS(proto), \ | |
84 | PARAMS(args), \ | |
85 | PARAMS(tstruct), \ | |
86 | PARAMS(assign), \ | |
87 | PARAMS(print)) | |
88 | ||
40652b65 MD |
89 | /* |
90 | * DECLARE_EVENT_CLASS can be used to add a generic function | |
91 | * handlers for events. That is, if all events have the same | |
92 | * parameters and just have distinct trace points. | |
93 | * Each tracepoint can be defined with DEFINE_EVENT and that | |
94 | * will map the DECLARE_EVENT_CLASS to the tracepoint. | |
95 | * | |
96 | * TRACE_EVENT is a one to one mapping between tracepoint and template. | |
97 | */ | |
6db3d13b | 98 | |
40652b65 | 99 | #undef TRACE_EVENT |
76e4f017 MD |
100 | #define TRACE_EVENT(name, proto, args, tstruct, assign, print) \ |
101 | TRACE_EVENT_MAP(name, name, \ | |
102 | PARAMS(proto), \ | |
103 | PARAMS(args), \ | |
104 | PARAMS(tstruct), \ | |
105 | PARAMS(assign), \ | |
106 | PARAMS(print)) | |
40652b65 | 107 | |
f7bdf4db | 108 | #undef TRACE_EVENT_NOARGS |
76e4f017 MD |
109 | #define TRACE_EVENT_NOARGS(name, tstruct, assign, print) \ |
110 | TRACE_EVENT_MAP_NOARGS(name, name, \ | |
111 | PARAMS(tstruct), \ | |
112 | PARAMS(assign), \ | |
113 | PARAMS(print)) | |
f7bdf4db | 114 | |
6db3d13b MD |
115 | #undef DEFINE_EVENT_PRINT |
116 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ | |
76e4f017 MD |
117 | DEFINE_EVENT_PRINT_MAP(template, name, name, \ |
118 | PARAMS(proto), PARAMS(args), PARAMS(print_)) | |
6db3d13b | 119 | |
6db3d13b MD |
120 | #undef TRACE_EVENT_FN |
121 | #define TRACE_EVENT_FN(name, proto, args, tstruct, \ | |
122 | assign, print, reg, unreg) \ | |
76e4f017 MD |
123 | TRACE_EVENT_FN_MAP(name, name, PARAMS(proto), PARAMS(args), \ |
124 | PARAMS(tstruct), PARAMS(assign), PARAMS(print), \ | |
125 | PARAMS(reg), PARAMS(unreg)) \ | |
126 | ||
127 | #undef DEFINE_EVENT | |
128 | #define DEFINE_EVENT(template, name, proto, args) \ | |
129 | DEFINE_EVENT_MAP(template, name, name, PARAMS(proto), PARAMS(args)) | |
130 | ||
131 | #undef DEFINE_EVENT_NOARGS | |
132 | #define DEFINE_EVENT_NOARGS(template, name) \ | |
133 | DEFINE_EVENT_MAP_NOARGS(template, name, name) | |
134 | ||
135 | #undef TRACE_EVENT_CONDITION | |
136 | #define TRACE_EVENT_CONDITION(name, proto, args, cond, tstruct, assign, print) \ | |
137 | TRACE_EVENT_CONDITION_MAP(name, name, \ | |
138 | PARAMS(proto), \ | |
139 | PARAMS(args), \ | |
140 | PARAMS(cond), \ | |
141 | PARAMS(tstruct), \ | |
142 | PARAMS(assign), \ | |
143 | PARAMS(print)) | |
6db3d13b | 144 | |
7ca580f8 MD |
145 | #undef DECLARE_EVENT_CLASS |
146 | #define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \ | |
147 | LTTNG_DECLARE_EVENT_CLASS(_name, PARAMS(_proto), PARAMS(_args), , , \ | |
148 | PARAMS(_tstruct), PARAMS(_assign), PARAMS(_print)) | |
149 | ||
150 | #undef DECLARE_EVENT_CLASS_NOARGS | |
151 | #define DECLARE_EVENT_CLASS_NOARGS(_name, _tstruct, _assign, _print) \ | |
152 | LTTNG_DECLARE_EVENT_CLASS_NOARGS(_name, , , PARAMS(_tstruct), \ | |
153 | PARAMS(_assign), PARAMS(_print)) | |
154 | ||
155 | ||
f62b389e | 156 | /* |
c099397a | 157 | * Stage 1 of the trace events. |
f62b389e MD |
158 | * |
159 | * Create dummy trace calls for each events, verifying that the LTTng module | |
160 | * TRACE_EVENT headers match the kernel arguments. Will be optimized out by the | |
161 | * compiler. | |
162 | */ | |
163 | ||
164 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
165 | ||
166 | #undef TP_PROTO | |
167 | #define TP_PROTO(args...) args | |
168 | ||
169 | #undef TP_ARGS | |
170 | #define TP_ARGS(args...) args | |
171 | ||
76e4f017 MD |
172 | #undef DEFINE_EVENT_MAP |
173 | #define DEFINE_EVENT_MAP(_template, _name, _map, _proto, _args) \ | |
7eb827f2 | 174 | void trace_##_name(_proto); |
f62b389e | 175 | |
76e4f017 MD |
176 | #undef DEFINE_EVENT_MAP_NOARGS |
177 | #define DEFINE_EVENT_MAP_NOARGS(_template, _name, _map) \ | |
f7bdf4db MD |
178 | void trace_##_name(void *__data); |
179 | ||
f62b389e MD |
180 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
181 | ||
6db3d13b | 182 | /* |
c099397a | 183 | * Stage 2 of the trace events. |
6db3d13b MD |
184 | * |
185 | * Create event field type metadata section. | |
186 | * Each event produce an array of fields. | |
187 | */ | |
188 | ||
189 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
190 | ||
1d12cebd MD |
191 | /* Named field types must be defined in lttng-types.h */ |
192 | ||
d71e6471 MD |
193 | #undef __field_full |
194 | #define __field_full(_type, _item, _order, _base) \ | |
c099397a MD |
195 | { \ |
196 | .name = #_item, \ | |
d71e6471 | 197 | .type = __type_integer(_type, _order, _base, none), \ |
c099397a | 198 | }, |
40652b65 | 199 | |
d71e6471 MD |
200 | #undef __field |
201 | #define __field(_type, _item) \ | |
202 | __field_full(_type, _item, __BYTE_ORDER, 10) | |
203 | ||
40652b65 | 204 | #undef __field_ext |
d71e6471 MD |
205 | #define __field_ext(_type, _item, _filter_type) \ |
206 | __field(_type, _item) | |
40652b65 | 207 | |
6d20e0ae MD |
208 | #undef __field_hex |
209 | #define __field_hex(_type, _item) \ | |
210 | __field_full(_type, _item, __BYTE_ORDER, 16) | |
211 | ||
29021503 MD |
212 | #undef __field_oct |
213 | #define __field_oct(_type, _item) \ | |
214 | __field_full(_type, _item, __BYTE_ORDER, 8) | |
215 | ||
c099397a MD |
216 | #undef __field_network |
217 | #define __field_network(_type, _item) \ | |
d71e6471 MD |
218 | __field_full(_type, _item, __BIG_ENDIAN, 10) |
219 | ||
220 | #undef __field_network_hex | |
221 | #define __field_network_hex(_type, _item) \ | |
222 | __field_full(_type, _item, __BIG_ENDIAN, 16) | |
c099397a | 223 | |
d71e6471 MD |
224 | #undef __array_enc_ext |
225 | #define __array_enc_ext(_type, _item, _length, _order, _base, _encoding)\ | |
299338c8 | 226 | { \ |
c099397a MD |
227 | .name = #_item, \ |
228 | .type = \ | |
229 | { \ | |
299338c8 | 230 | .atype = atype_array, \ |
c099397a MD |
231 | .u.array = \ |
232 | { \ | |
233 | .length = _length, \ | |
d71e6471 | 234 | .elem_type = __type_integer(_type, _order, _base, _encoding), \ |
c099397a | 235 | }, \ |
299338c8 MD |
236 | }, \ |
237 | }, | |
40652b65 | 238 | |
64c796d8 MD |
239 | #undef __array |
240 | #define __array(_type, _item, _length) \ | |
d71e6471 | 241 | __array_enc_ext(_type, _item, _length, __BYTE_ORDER, 10, none) |
64c796d8 MD |
242 | |
243 | #undef __array_text | |
244 | #define __array_text(_type, _item, _length) \ | |
d71e6471 | 245 | __array_enc_ext(_type, _item, _length, __BYTE_ORDER, 10, UTF8) |
64c796d8 | 246 | |
d71e6471 MD |
247 | #undef __array_hex |
248 | #define __array_hex(_type, _item, _length) \ | |
249 | __array_enc_ext(_type, _item, _length, __BYTE_ORDER, 16, none) | |
250 | ||
251 | #undef __dynamic_array_enc_ext | |
252 | #define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding) \ | |
299338c8 | 253 | { \ |
c099397a MD |
254 | .name = #_item, \ |
255 | .type = \ | |
256 | { \ | |
299338c8 | 257 | .atype = atype_sequence, \ |
c099397a MD |
258 | .u.sequence = \ |
259 | { \ | |
64c796d8 | 260 | .length_type = __type_integer(u32, __BYTE_ORDER, 10, none), \ |
d71e6471 | 261 | .elem_type = __type_integer(_type, _order, _base, _encoding), \ |
c099397a | 262 | }, \ |
299338c8 MD |
263 | }, \ |
264 | }, | |
40652b65 | 265 | |
84da5206 MD |
266 | #undef __dynamic_array_enc_ext_2 |
267 | #define __dynamic_array_enc_ext_2(_type, _item, _length1, _length2, _order, _base, _encoding) \ | |
268 | __dynamic_array_enc_ext(_type, _item, _length1 + _length2, _order, _base, _encoding) | |
269 | ||
64c796d8 MD |
270 | #undef __dynamic_array |
271 | #define __dynamic_array(_type, _item, _length) \ | |
d71e6471 | 272 | __dynamic_array_enc_ext(_type, _item, _length, __BYTE_ORDER, 10, none) |
64c796d8 MD |
273 | |
274 | #undef __dynamic_array_text | |
275 | #define __dynamic_array_text(_type, _item, _length) \ | |
d71e6471 MD |
276 | __dynamic_array_enc_ext(_type, _item, _length, __BYTE_ORDER, 10, UTF8) |
277 | ||
278 | #undef __dynamic_array_hex | |
279 | #define __dynamic_array_hex(_type, _item, _length) \ | |
280 | __dynamic_array_enc_ext(_type, _item, _length, __BYTE_ORDER, 16, none) | |
64c796d8 | 281 | |
7ca580f8 MD |
282 | #undef __dynamic_array_network_hex |
283 | #define __dynamic_array_network_hex(_type, _item, _length) \ | |
284 | __dynamic_array_enc_ext(_type, _item, _length, __BIG_ENDIAN, 16, none) | |
285 | ||
286 | #undef __dynamic_array_network | |
287 | #define __dynamic_array_network(_type, _item, _length) \ | |
288 | __dynamic_array_enc_ext(_type, _item, _length, __BIG_ENDIAN, 10, none) | |
289 | ||
84da5206 MD |
290 | #undef __dynamic_array_text_2 |
291 | #define __dynamic_array_text_2(_type, _item, _length1, _length2) \ | |
292 | __dynamic_array_enc_ext_2(_type, _item, _length1, _length2, __BYTE_ORDER, 10, UTF8) | |
293 | ||
40652b65 | 294 | #undef __string |
1d12cebd | 295 | #define __string(_item, _src) \ |
299338c8 | 296 | { \ |
c099397a MD |
297 | .name = #_item, \ |
298 | .type = \ | |
299 | { \ | |
299338c8 | 300 | .atype = atype_string, \ |
c099397a | 301 | .u.basic.string.encoding = lttng_encode_UTF8, \ |
299338c8 MD |
302 | }, \ |
303 | }, | |
1d12cebd | 304 | |
c6e3f225 MD |
305 | #undef __string_from_user |
306 | #define __string_from_user(_item, _src) \ | |
307 | __string(_item, _src) | |
308 | ||
40652b65 | 309 | #undef TP_STRUCT__entry |
1d12cebd MD |
310 | #define TP_STRUCT__entry(args...) args /* Only one used in this phase */ |
311 | ||
7ca580f8 MD |
312 | #undef LTTNG_DECLARE_EVENT_CLASS_NOARGS |
313 | #define LTTNG_DECLARE_EVENT_CLASS_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print) \ | |
0d1d4002 MD |
314 | static const struct lttng_event_field __event_fields___##_name[] = { \ |
315 | _tstruct \ | |
299338c8 MD |
316 | }; |
317 | ||
7ca580f8 MD |
318 | #undef LTTNG_DECLARE_EVENT_CLASS |
319 | #define LTTNG_DECLARE_EVENT_CLASS(_name, _proto, _args, _locvar, _code, _tstruct, _assign, _print) \ | |
320 | LTTNG_DECLARE_EVENT_CLASS_NOARGS(_name, _locvar, _code, PARAMS(_tstruct), PARAMS(_assign), \ | |
f7bdf4db MD |
321 | PARAMS(_print)) |
322 | ||
299338c8 MD |
323 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
324 | ||
19c57fbf | 325 | /* |
c099397a | 326 | * Stage 3 of the trace events. |
19c57fbf MD |
327 | * |
328 | * Create probe callback prototypes. | |
329 | */ | |
330 | ||
331 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
332 | ||
333 | #undef TP_PROTO | |
334 | #define TP_PROTO(args...) args | |
335 | ||
7ca580f8 MD |
336 | #undef LTTNG_DECLARE_EVENT_CLASS |
337 | #define LTTNG_DECLARE_EVENT_CLASS(_name, _proto, _args, _locvar, _code, _tstruct, _assign, _print) \ | |
19c57fbf MD |
338 | static void __event_probe__##_name(void *__data, _proto); |
339 | ||
7ca580f8 MD |
340 | #undef LTTNG_DECLARE_EVENT_CLASS_NOARGS |
341 | #define LTTNG_DECLARE_EVENT_CLASS_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print) \ | |
f7bdf4db MD |
342 | static void __event_probe__##_name(void *__data); |
343 | ||
19c57fbf MD |
344 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
345 | ||
299338c8 | 346 | /* |
f7bdf4db | 347 | * Stage 3.9 of the trace events. |
299338c8 | 348 | * |
f7bdf4db | 349 | * Create event descriptions. |
299338c8 MD |
350 | */ |
351 | ||
299338c8 MD |
352 | /* Named field types must be defined in lttng-types.h */ |
353 | ||
6db3d13b | 354 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ |
299338c8 | 355 | |
1ec65de1 MD |
356 | #ifndef TP_PROBE_CB |
357 | #define TP_PROBE_CB(_template) &__event_probe__##_template | |
358 | #endif | |
359 | ||
76e4f017 MD |
360 | #undef DEFINE_EVENT_MAP_NOARGS |
361 | #define DEFINE_EVENT_MAP_NOARGS(_template, _name, _map) \ | |
362 | static const struct lttng_event_desc __event_desc___##_map = { \ | |
f7bdf4db | 363 | .fields = __event_fields___##_template, \ |
76e4f017 | 364 | .name = #_map, \ |
a26a7e4f | 365 | .kname = #_name, \ |
f7bdf4db MD |
366 | .probe_callback = (void *) TP_PROBE_CB(_template), \ |
367 | .nr_fields = ARRAY_SIZE(__event_fields___##_template), \ | |
368 | .owner = THIS_MODULE, \ | |
369 | }; | |
370 | ||
76e4f017 MD |
371 | #undef DEFINE_EVENT_MAP |
372 | #define DEFINE_EVENT_MAP(_template, _name, _map, _proto, _args) \ | |
373 | DEFINE_EVENT_MAP_NOARGS(_template, _name, _map) | |
f7bdf4db MD |
374 | |
375 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
376 | ||
377 | ||
378 | /* | |
379 | * Stage 4 of the trace events. | |
380 | * | |
381 | * Create an array of event description pointers. | |
382 | */ | |
383 | ||
384 | /* Named field types must be defined in lttng-types.h */ | |
385 | ||
386 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
387 | ||
76e4f017 MD |
388 | #undef DEFINE_EVENT_MAP_NOARGS |
389 | #define DEFINE_EVENT_MAP_NOARGS(_template, _name, _map) \ | |
390 | &__event_desc___##_map, | |
f7bdf4db | 391 | |
76e4f017 MD |
392 | #undef DEFINE_EVENT_MAP |
393 | #define DEFINE_EVENT_MAP(_template, _name, _map, _proto, _args) \ | |
394 | DEFINE_EVENT_MAP_NOARGS(_template, _name, _map) | |
40652b65 | 395 | |
d0dd2ecb MD |
396 | #define TP_ID1(_token, _system) _token##_system |
397 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
40652b65 | 398 | |
f7bdf4db | 399 | static const struct lttng_event_desc *TP_ID(__event_desc___, TRACE_SYSTEM)[] = { |
40652b65 | 400 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
299338c8 MD |
401 | }; |
402 | ||
d0dd2ecb MD |
403 | #undef TP_ID1 |
404 | #undef TP_ID | |
405 | ||
85a9ca7f MD |
406 | |
407 | /* | |
c099397a | 408 | * Stage 5 of the trace events. |
85a9ca7f MD |
409 | * |
410 | * Create a toplevel descriptor for the whole probe. | |
411 | */ | |
412 | ||
413 | #define TP_ID1(_token, _system) _token##_system | |
414 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
415 | ||
416 | /* non-const because list head will be modified when registered. */ | |
25631135 | 417 | static __used struct lttng_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = { |
85a9ca7f MD |
418 | .event_desc = TP_ID(__event_desc___, TRACE_SYSTEM), |
419 | .nr_events = ARRAY_SIZE(TP_ID(__event_desc___, TRACE_SYSTEM)), | |
420 | }; | |
421 | ||
422 | #undef TP_ID1 | |
423 | #undef TP_ID | |
424 | ||
d0dd2ecb | 425 | /* |
c099397a | 426 | * Stage 6 of the trace events. |
40652b65 MD |
427 | * |
428 | * Create static inline function that calculates event size. | |
429 | */ | |
430 | ||
6db3d13b | 431 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ |
40652b65 | 432 | |
6db3d13b MD |
433 | /* Named field types must be defined in lttng-types.h */ |
434 | ||
d71e6471 MD |
435 | #undef __field_full |
436 | #define __field_full(_type, _item, _order, _base) \ | |
a90917c3 | 437 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
0d1d4002 | 438 | __event_len += sizeof(_type); |
6db3d13b | 439 | |
d71e6471 MD |
440 | #undef __array_enc_ext |
441 | #define __array_enc_ext(_type, _item, _length, _order, _base, _encoding) \ | |
a90917c3 | 442 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
0d1d4002 | 443 | __event_len += sizeof(_type) * (_length); |
6db3d13b | 444 | |
d71e6471 MD |
445 | #undef __dynamic_array_enc_ext |
446 | #define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding)\ | |
7ca580f8 | 447 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(u32)); \ |
85a80742 | 448 | __event_len += sizeof(u32); \ |
a90917c3 | 449 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
41b59694 MD |
450 | __dynamic_len[__dynamic_len_idx] = (_length); \ |
451 | __event_len += sizeof(_type) * __dynamic_len[__dynamic_len_idx]; \ | |
452 | __dynamic_len_idx++; | |
6db3d13b | 453 | |
84da5206 MD |
454 | #undef __dynamic_array_enc_ext_2 |
455 | #define __dynamic_array_enc_ext_2(_type, _item, _length1, _length2, _order, _base, _encoding)\ | |
7ca580f8 | 456 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(u32)); \ |
84da5206 MD |
457 | __event_len += sizeof(u32); \ |
458 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ | |
459 | __dynamic_len[__dynamic_len_idx] = (_length1); \ | |
460 | __event_len += sizeof(_type) * __dynamic_len[__dynamic_len_idx]; \ | |
461 | __dynamic_len_idx++; \ | |
462 | __dynamic_len[__dynamic_len_idx] = (_length2); \ | |
463 | __event_len += sizeof(_type) * __dynamic_len[__dynamic_len_idx]; \ | |
464 | __dynamic_len_idx++; | |
465 | ||
6db3d13b | 466 | #undef __string |
85a80742 | 467 | #define __string(_item, _src) \ |
0d1d4002 MD |
468 | __event_len += __dynamic_len[__dynamic_len_idx++] = strlen(_src) + 1; |
469 | ||
d0255731 | 470 | /* |
786b8312 MD |
471 | * strlen_user includes \0. If returns 0, it faulted, so we set size to |
472 | * 1 (\0 only). | |
d0255731 | 473 | */ |
c6e3f225 MD |
474 | #undef __string_from_user |
475 | #define __string_from_user(_item, _src) \ | |
786b8312 | 476 | __event_len += __dynamic_len[__dynamic_len_idx++] = \ |
7b8ea3a5 | 477 | max_t(size_t, lttng_strlen_user_inatomic(_src), 1); |
c6e3f225 | 478 | |
0d1d4002 MD |
479 | #undef TP_PROTO |
480 | #define TP_PROTO(args...) args | |
6db3d13b MD |
481 | |
482 | #undef TP_STRUCT__entry | |
0d1d4002 | 483 | #define TP_STRUCT__entry(args...) args |
6db3d13b | 484 | |
7ca580f8 MD |
485 | #undef TP_locvar |
486 | #define TP_locvar(...) __VA_ARGS__ | |
487 | ||
488 | #undef LTTNG_DECLARE_EVENT_CLASS | |
489 | #define LTTNG_DECLARE_EVENT_CLASS(_name, _proto, _args, _locvar, _code, _tstruct, _assign, _print) \ | |
490 | static inline size_t __event_get_size__##_name(size_t *__dynamic_len, \ | |
491 | void *__tp_locvar, _proto) \ | |
0d1d4002 MD |
492 | { \ |
493 | size_t __event_len = 0; \ | |
d3de7f14 | 494 | unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \ |
7ca580f8 | 495 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
d3de7f14 MD |
496 | \ |
497 | _tstruct \ | |
498 | return __event_len; \ | |
499 | } | |
500 | ||
7ca580f8 MD |
501 | #undef LTTNG_DECLARE_EVENT_CLASS_NOARGS |
502 | #define LTTNG_DECLARE_EVENT_CLASS_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print) \ | |
503 | static inline size_t __event_get_size__##_name(size_t *__dynamic_len, \ | |
504 | void *__tp_locvar) \ | |
d3de7f14 MD |
505 | { \ |
506 | size_t __event_len = 0; \ | |
507 | unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \ | |
7ca580f8 | 508 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
0d1d4002 | 509 | \ |
0d1d4002 MD |
510 | _tstruct \ |
511 | return __event_len; \ | |
6db3d13b | 512 | } |
40652b65 MD |
513 | |
514 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
515 | ||
516 | /* | |
c099397a | 517 | * Stage 7 of the trace events. |
e763dbf5 MD |
518 | * |
519 | * Create static inline function that calculates event payload alignment. | |
520 | */ | |
521 | ||
522 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
523 | ||
524 | /* Named field types must be defined in lttng-types.h */ | |
525 | ||
d71e6471 MD |
526 | #undef __field_full |
527 | #define __field_full(_type, _item, _order, _base) \ | |
a90917c3 | 528 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); |
e763dbf5 | 529 | |
d71e6471 MD |
530 | #undef __array_enc_ext |
531 | #define __array_enc_ext(_type, _item, _length, _order, _base, _encoding) \ | |
a90917c3 | 532 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); |
e763dbf5 | 533 | |
d71e6471 MD |
534 | #undef __dynamic_array_enc_ext |
535 | #define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding)\ | |
7ca580f8 | 536 | __event_align = max_t(size_t, __event_align, lttng_alignof(u32)); \ |
a90917c3 | 537 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); |
e763dbf5 | 538 | |
84da5206 MD |
539 | #undef __dynamic_array_enc_ext_2 |
540 | #define __dynamic_array_enc_ext_2(_type, _item, _length1, _length2, _order, _base, _encoding)\ | |
541 | __dynamic_array_enc_ext(_type, _item, _length1 + _length2, _order, _base, _encoding) | |
542 | ||
e763dbf5 MD |
543 | #undef __string |
544 | #define __string(_item, _src) | |
545 | ||
c6e3f225 MD |
546 | #undef __string_from_user |
547 | #define __string_from_user(_item, _src) | |
548 | ||
e763dbf5 MD |
549 | #undef TP_PROTO |
550 | #define TP_PROTO(args...) args | |
551 | ||
552 | #undef TP_STRUCT__entry | |
553 | #define TP_STRUCT__entry(args...) args | |
554 | ||
7ca580f8 MD |
555 | #undef TP_locvar |
556 | #define TP_locvar(...) __VA_ARGS__ | |
557 | ||
558 | #undef LTTNG_DECLARE_EVENT_CLASS | |
559 | #define LTTNG_DECLARE_EVENT_CLASS(_name, _proto, _args, _locvar, _code, _tstruct, _assign, _print) \ | |
560 | static inline size_t __event_get_align__##_name(void *__tp_locvar, _proto) \ | |
e763dbf5 MD |
561 | { \ |
562 | size_t __event_align = 1; \ | |
7ca580f8 MD |
563 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
564 | \ | |
e763dbf5 MD |
565 | _tstruct \ |
566 | return __event_align; \ | |
567 | } | |
568 | ||
7ca580f8 MD |
569 | #undef LTTNG_DECLARE_EVENT_CLASS_NOARGS |
570 | #define LTTNG_DECLARE_EVENT_CLASS_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print) \ | |
571 | static inline size_t __event_get_align__##_name(void *__tp_locvar) \ | |
d3de7f14 MD |
572 | { \ |
573 | size_t __event_align = 1; \ | |
7ca580f8 MD |
574 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
575 | \ | |
d3de7f14 MD |
576 | _tstruct \ |
577 | return __event_align; \ | |
578 | } | |
579 | ||
e763dbf5 MD |
580 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
581 | ||
e763dbf5 | 582 | /* |
c099397a | 583 | * Stage 8 of the trace events. |
40652b65 | 584 | * |
3c4ffab9 MD |
585 | * Create structure declaration that allows the "assign" macros to access the |
586 | * field types. | |
587 | */ | |
588 | ||
589 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
590 | ||
591 | /* Named field types must be defined in lttng-types.h */ | |
592 | ||
d71e6471 MD |
593 | #undef __field_full |
594 | #define __field_full(_type, _item, _order, _base) _type _item; | |
3c4ffab9 | 595 | |
d71e6471 MD |
596 | #undef __array_enc_ext |
597 | #define __array_enc_ext(_type, _item, _length, _order, _base, _encoding) \ | |
598 | _type _item; | |
64c796d8 | 599 | |
d71e6471 MD |
600 | #undef __dynamic_array_enc_ext |
601 | #define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding)\ | |
602 | _type _item; | |
64c796d8 | 603 | |
84da5206 MD |
604 | #undef __dynamic_array_enc_ext_2 |
605 | #define __dynamic_array_enc_ext_2(_type, _item, _length1, _length2, _order, _base, _encoding)\ | |
606 | __dynamic_array_enc_ext(_type, _item, _length1 + _length2, _order, _base, _encoding) | |
607 | ||
3c4ffab9 | 608 | #undef __string |
c6e3f225 MD |
609 | #define __string(_item, _src) char _item; |
610 | ||
611 | #undef __string_from_user | |
612 | #define __string_from_user(_item, _src) \ | |
613 | __string(_item, _src) | |
3c4ffab9 MD |
614 | |
615 | #undef TP_STRUCT__entry | |
616 | #define TP_STRUCT__entry(args...) args | |
617 | ||
7ca580f8 MD |
618 | #undef LTTNG_DECLARE_EVENT_CLASS_NOARGS |
619 | #define LTTNG_DECLARE_EVENT_CLASS_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print) \ | |
3c4ffab9 MD |
620 | struct __event_typemap__##_name { \ |
621 | _tstruct \ | |
622 | }; | |
623 | ||
7ca580f8 MD |
624 | #undef LTTNG_DECLARE_EVENT_CLASS |
625 | #define LTTNG_DECLARE_EVENT_CLASS(_name, _proto, _args, _locvar, _code, _tstruct, _assign, _print) \ | |
626 | LTTNG_DECLARE_EVENT_CLASS_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print) | |
d3de7f14 | 627 | |
3c4ffab9 MD |
628 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
629 | ||
630 | ||
631 | /* | |
c099397a | 632 | * Stage 9 of the trace events. |
3c4ffab9 | 633 | * |
40652b65 MD |
634 | * Create the probe function : call even size calculation and write event data |
635 | * into the buffer. | |
e763dbf5 | 636 | * |
67e5e60c MD |
637 | * We use both the field and assignment macros to write the fields in the order |
638 | * defined in the field declaration. The field declarations control the | |
639 | * execution order, jumping to the appropriate assignment block. | |
40652b65 MD |
640 | */ |
641 | ||
e763dbf5 MD |
642 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ |
643 | ||
d71e6471 MD |
644 | #undef __field_full |
645 | #define __field_full(_type, _item, _order, _base) \ | |
e763dbf5 MD |
646 | goto __assign_##_item; \ |
647 | __end_field_##_item: | |
40652b65 | 648 | |
d71e6471 MD |
649 | #undef __array_enc_ext |
650 | #define __array_enc_ext(_type, _item, _length, _order, _base, _encoding)\ | |
e763dbf5 MD |
651 | goto __assign_##_item; \ |
652 | __end_field_##_item: | |
40652b65 | 653 | |
d71e6471 MD |
654 | #undef __dynamic_array_enc_ext |
655 | #define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding)\ | |
e763dbf5 MD |
656 | goto __assign_##_item##_1; \ |
657 | __end_field_##_item##_1: \ | |
e763dbf5 MD |
658 | goto __assign_##_item##_2; \ |
659 | __end_field_##_item##_2: | |
40652b65 | 660 | |
84da5206 MD |
661 | #undef __dynamic_array_enc_ext_2 |
662 | #define __dynamic_array_enc_ext_2(_type, _item, _length1, _length2, _order, _base, _encoding)\ | |
663 | goto __assign_##_item##_1; \ | |
664 | __end_field_##_item##_1: \ | |
665 | goto __assign_##_item##_2; \ | |
666 | __end_field_##_item##_2: \ | |
667 | goto __assign_##_item##_3; \ | |
668 | __end_field_##_item##_3: | |
669 | ||
e763dbf5 MD |
670 | #undef __string |
671 | #define __string(_item, _src) \ | |
672 | goto __assign_##_item; \ | |
673 | __end_field_##_item: | |
674 | ||
c6e3f225 MD |
675 | #undef __string_from_user |
676 | #define __string_from_user(_item, _src) \ | |
677 | __string(_item, _src) | |
678 | ||
e763dbf5 MD |
679 | /* |
680 | * Macros mapping tp_assign() to "=", tp_memcpy() to memcpy() and tp_strcpy() to | |
681 | * strcpy(). | |
682 | */ | |
683 | #undef tp_assign | |
684 | #define tp_assign(dest, src) \ | |
685 | __assign_##dest: \ | |
686 | { \ | |
3c4ffab9 | 687 | __typeof__(__typemap.dest) __tmp = (src); \ |
a90917c3 | 688 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp)); \ |
aaa4004a | 689 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ |
e763dbf5 MD |
690 | } \ |
691 | goto __end_field_##dest; | |
692 | ||
d9a7cf03 FG |
693 | /* fixed length array memcpy */ |
694 | #undef tp_memcpy_gen | |
695 | #define tp_memcpy_gen(write_ops, dest, src, len) \ | |
e763dbf5 | 696 | __assign_##dest: \ |
d793d5e1 MD |
697 | if (0) \ |
698 | (void) __typemap.dest; \ | |
a90917c3 | 699 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__typemap.dest)); \ |
d9a7cf03 | 700 | __chan->ops->write_ops(&__ctx, src, len); \ |
e763dbf5 MD |
701 | goto __end_field_##dest; |
702 | ||
d9a7cf03 FG |
703 | #undef tp_memcpy |
704 | #define tp_memcpy(dest, src, len) \ | |
705 | tp_memcpy_gen(event_write, dest, src, len) | |
706 | ||
707 | #undef tp_memcpy_from_user | |
708 | #define tp_memcpy_from_user(dest, src, len) \ | |
709 | tp_memcpy_gen(event_write_from_user, dest, src, len) | |
710 | ||
711 | /* variable length sequence memcpy */ | |
712 | #undef tp_memcpy_dyn_gen | |
713 | #define tp_memcpy_dyn_gen(write_ops, dest, src) \ | |
e763dbf5 MD |
714 | __assign_##dest##_1: \ |
715 | { \ | |
41b59694 | 716 | u32 __tmpl = __dynamic_len[__dynamic_len_idx]; \ |
a90917c3 | 717 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(u32)); \ |
aaa4004a | 718 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(u32)); \ |
e763dbf5 MD |
719 | } \ |
720 | goto __end_field_##dest##_1; \ | |
721 | __assign_##dest##_2: \ | |
a90917c3 | 722 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__typemap.dest)); \ |
d9a7cf03 | 723 | __chan->ops->write_ops(&__ctx, src, \ |
41b59694 | 724 | sizeof(__typemap.dest) * __get_dynamic_array_len(dest));\ |
e763dbf5 | 725 | goto __end_field_##dest##_2; |
58aa5d24 | 726 | |
84da5206 MD |
727 | #undef tp_memcpy_dyn_gen_2 |
728 | #define tp_memcpy_dyn_gen_2(write_ops, dest, src1, src2) \ | |
729 | __assign_##dest##_1: \ | |
730 | { \ | |
731 | u32 __tmpl = __dynamic_len[__dynamic_len_idx] \ | |
732 | + __dynamic_len[__dynamic_len_idx + 1]; \ | |
733 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(u32)); \ | |
734 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(u32)); \ | |
735 | } \ | |
736 | goto __end_field_##dest##_1; \ | |
737 | __assign_##dest##_2: \ | |
738 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__typemap.dest)); \ | |
739 | __chan->ops->write_ops(&__ctx, src1, \ | |
740 | sizeof(__typemap.dest) * __get_dynamic_array_len(dest));\ | |
741 | goto __end_field_##dest##_2; \ | |
742 | __assign_##dest##_3: \ | |
743 | __chan->ops->write_ops(&__ctx, src2, \ | |
744 | sizeof(__typemap.dest) * __get_dynamic_array_len(dest));\ | |
745 | goto __end_field_##dest##_3; | |
746 | ||
d9a7cf03 FG |
747 | #undef tp_memcpy_dyn |
748 | #define tp_memcpy_dyn(dest, src) \ | |
749 | tp_memcpy_dyn_gen(event_write, dest, src) | |
750 | ||
84da5206 MD |
751 | #undef tp_memcpy_dyn_2 |
752 | #define tp_memcpy_dyn_2(dest, src1, src2) \ | |
753 | tp_memcpy_dyn_gen_2(event_write, dest, src1, src2) | |
754 | ||
d9a7cf03 FG |
755 | #undef tp_memcpy_dyn_from_user |
756 | #define tp_memcpy_dyn_from_user(dest, src) \ | |
757 | tp_memcpy_dyn_gen(event_write_from_user, dest, src) | |
58aa5d24 | 758 | |
d0255731 | 759 | /* |
786b8312 | 760 | * The string length including the final \0. |
d0255731 | 761 | */ |
4ea00e4f | 762 | #undef tp_copy_string_from_user |
58aa5d24 | 763 | #define tp_copy_string_from_user(dest, src) \ |
16f78f3a MD |
764 | __assign_##dest: \ |
765 | if (0) \ | |
766 | (void) __typemap.dest; \ | |
767 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__typemap.dest)); \ | |
768 | __chan->ops->event_strcpy_from_user(&__ctx, src, \ | |
769 | __get_dynamic_array_len(dest)); \ | |
4ea00e4f | 770 | goto __end_field_##dest; |
16f78f3a | 771 | |
e763dbf5 MD |
772 | #undef tp_strcpy |
773 | #define tp_strcpy(dest, src) \ | |
16f78f3a MD |
774 | __assign_##dest: \ |
775 | if (0) \ | |
776 | (void) __typemap.dest; \ | |
777 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__typemap.dest)); \ | |
778 | __chan->ops->event_strcpy(&__ctx, src, __get_dynamic_array_len(dest)); \ | |
779 | goto __end_field_##dest; | |
40652b65 | 780 | |
e763dbf5 MD |
781 | /* Named field types must be defined in lttng-types.h */ |
782 | ||
783 | #undef __get_str | |
784 | #define __get_str(field) field | |
785 | ||
786 | #undef __get_dynamic_array | |
787 | #define __get_dynamic_array(field) field | |
788 | ||
789 | /* Beware: this get len actually consumes the len value */ | |
790 | #undef __get_dynamic_array_len | |
791 | #define __get_dynamic_array_len(field) __dynamic_len[__dynamic_len_idx++] | |
792 | ||
793 | #undef TP_PROTO | |
794 | #define TP_PROTO(args...) args | |
795 | ||
796 | #undef TP_ARGS | |
797 | #define TP_ARGS(args...) args | |
798 | ||
799 | #undef TP_STRUCT__entry | |
800 | #define TP_STRUCT__entry(args...) args | |
801 | ||
802 | #undef TP_fast_assign | |
803 | #define TP_fast_assign(args...) args | |
804 | ||
7ca580f8 MD |
805 | #undef TP_locvar |
806 | #define TP_locvar(...) __VA_ARGS__ | |
807 | ||
808 | #undef TP_code | |
809 | #define TP_code(...) __VA_ARGS__ | |
810 | ||
c337ddc2 MD |
811 | /* |
812 | * For state dump, check that "session" argument (mandatory) matches the | |
813 | * session this event belongs to. Ensures that we write state dump data only | |
814 | * into the started session, not into all sessions. | |
815 | */ | |
816 | #ifdef TP_SESSION_CHECK | |
817 | #define _TP_SESSION_CHECK(session, csession) (session == csession) | |
818 | #else /* TP_SESSION_CHECK */ | |
819 | #define _TP_SESSION_CHECK(session, csession) 1 | |
820 | #endif /* TP_SESSION_CHECK */ | |
821 | ||
f9771d39 MD |
822 | /* |
823 | * __dynamic_len array length is twice the number of fields due to | |
824 | * __dynamic_array_enc_ext_2() and tp_memcpy_dyn_2(), which are the | |
825 | * worse case, needing 2 entries per field. | |
826 | */ | |
7ca580f8 MD |
827 | #undef LTTNG_DECLARE_EVENT_CLASS |
828 | #define LTTNG_DECLARE_EVENT_CLASS(_name, _proto, _args, _locvar, _code, _tstruct, _assign, _print) \ | |
e763dbf5 MD |
829 | static void __event_probe__##_name(void *__data, _proto) \ |
830 | { \ | |
7ca580f8 | 831 | struct probe_local_vars { _locvar }; \ |
a90917c3 MD |
832 | struct lttng_event *__event = __data; \ |
833 | struct lttng_channel *__chan = __event->chan; \ | |
aaa4004a | 834 | struct lib_ring_buffer_ctx __ctx; \ |
e763dbf5 | 835 | size_t __event_len, __event_align; \ |
d3de7f14 MD |
836 | size_t __dynamic_len_idx __attribute__((unused)) = 0; \ |
837 | size_t __dynamic_len[2 * ARRAY_SIZE(__event_fields___##_name)] __attribute__((unused)); \ | |
838 | struct __event_typemap__##_name __typemap __attribute__((unused)); \ | |
e763dbf5 | 839 | int __ret; \ |
7ca580f8 MD |
840 | struct probe_local_vars __tp_locvar; \ |
841 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
842 | &__tp_locvar; \ | |
e763dbf5 | 843 | \ |
c337ddc2 MD |
844 | if (!_TP_SESSION_CHECK(session, __chan->session)) \ |
845 | return; \ | |
e64957da MD |
846 | if (unlikely(!ACCESS_ONCE(__chan->session->active))) \ |
847 | return; \ | |
848 | if (unlikely(!ACCESS_ONCE(__chan->enabled))) \ | |
849 | return; \ | |
850 | if (unlikely(!ACCESS_ONCE(__event->enabled))) \ | |
52fc2e1f | 851 | return; \ |
7ca580f8 MD |
852 | _code \ |
853 | __event_len = __event_get_size__##_name(__dynamic_len, tp_locvar, \ | |
854 | _args); \ | |
855 | __event_align = __event_get_align__##_name(tp_locvar, _args); \ | |
aaa4004a | 856 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, __event, __event_len, \ |
e763dbf5 | 857 | __event_align, -1); \ |
aaa4004a | 858 | __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ |
e763dbf5 MD |
859 | if (__ret < 0) \ |
860 | return; \ | |
861 | /* Control code (field ordering) */ \ | |
862 | _tstruct \ | |
aaa4004a | 863 | __chan->ops->event_commit(&__ctx); \ |
e763dbf5 MD |
864 | return; \ |
865 | /* Copy code, steered by control code */ \ | |
866 | _assign \ | |
867 | } | |
868 | ||
7ca580f8 MD |
869 | #undef LTTNG_DECLARE_EVENT_CLASS_NOARGS |
870 | #define LTTNG_DECLARE_EVENT_CLASS_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print) \ | |
f7bdf4db MD |
871 | static void __event_probe__##_name(void *__data) \ |
872 | { \ | |
7ca580f8 | 873 | struct probe_local_vars { _locvar }; \ |
a90917c3 MD |
874 | struct lttng_event *__event = __data; \ |
875 | struct lttng_channel *__chan = __event->chan; \ | |
f7bdf4db MD |
876 | struct lib_ring_buffer_ctx __ctx; \ |
877 | size_t __event_len, __event_align; \ | |
d3de7f14 MD |
878 | size_t __dynamic_len_idx __attribute__((unused)) = 0; \ |
879 | size_t __dynamic_len[2 * ARRAY_SIZE(__event_fields___##_name)] __attribute__((unused)); \ | |
880 | struct __event_typemap__##_name __typemap __attribute__((unused)); \ | |
f7bdf4db | 881 | int __ret; \ |
7ca580f8 MD |
882 | struct probe_local_vars __tp_locvar; \ |
883 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
884 | &__tp_locvar; \ | |
f7bdf4db | 885 | \ |
c337ddc2 MD |
886 | if (!_TP_SESSION_CHECK(session, __chan->session)) \ |
887 | return; \ | |
f7bdf4db MD |
888 | if (unlikely(!ACCESS_ONCE(__chan->session->active))) \ |
889 | return; \ | |
890 | if (unlikely(!ACCESS_ONCE(__chan->enabled))) \ | |
891 | return; \ | |
892 | if (unlikely(!ACCESS_ONCE(__event->enabled))) \ | |
893 | return; \ | |
7ca580f8 MD |
894 | _code \ |
895 | __event_len = __event_get_size__##_name(__dynamic_len, tp_locvar); \ | |
896 | __event_align = __event_get_align__##_name(tp_locvar); \ | |
f7bdf4db MD |
897 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, __event, __event_len, \ |
898 | __event_align, -1); \ | |
899 | __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ | |
900 | if (__ret < 0) \ | |
901 | return; \ | |
902 | /* Control code (field ordering) */ \ | |
903 | _tstruct \ | |
904 | __chan->ops->event_commit(&__ctx); \ | |
905 | return; \ | |
906 | /* Copy code, steered by control code */ \ | |
907 | _assign \ | |
908 | } | |
909 | ||
e763dbf5 MD |
910 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
911 | ||
3afe7aac | 912 | /* |
c099397a | 913 | * Stage 10 of the trace events. |
3afe7aac MD |
914 | * |
915 | * Register/unregister probes at module load/unload. | |
916 | */ | |
917 | ||
918 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
919 | ||
920 | #define TP_ID1(_token, _system) _token##_system | |
921 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
922 | #define module_init_eval1(_token, _system) module_init(_token##_system) | |
923 | #define module_init_eval(_token, _system) module_init_eval1(_token, _system) | |
924 | #define module_exit_eval1(_token, _system) module_exit(_token##_system) | |
925 | #define module_exit_eval(_token, _system) module_exit_eval1(_token, _system) | |
926 | ||
2655f9ad | 927 | #ifndef TP_MODULE_NOINIT |
3afe7aac MD |
928 | static int TP_ID(__lttng_events_init__, TRACE_SYSTEM)(void) |
929 | { | |
6d2a620c | 930 | wrapper_vmalloc_sync_all(); |
a90917c3 | 931 | return lttng_probe_register(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
932 | } |
933 | ||
3afe7aac MD |
934 | static void TP_ID(__lttng_events_exit__, TRACE_SYSTEM)(void) |
935 | { | |
a90917c3 | 936 | lttng_probe_unregister(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
937 | } |
938 | ||
2655f9ad MD |
939 | #ifndef TP_MODULE_NOAUTOLOAD |
940 | module_init_eval(__lttng_events_init__, TRACE_SYSTEM); | |
3afe7aac | 941 | module_exit_eval(__lttng_events_exit__, TRACE_SYSTEM); |
259b6cb3 | 942 | #endif |
3afe7aac | 943 | |
2655f9ad MD |
944 | #endif |
945 | ||
3afe7aac MD |
946 | #undef module_init_eval |
947 | #undef module_exit_eval | |
948 | #undef TP_ID1 | |
949 | #undef TP_ID | |
177b3692 MD |
950 | |
951 | #undef TP_PROTO | |
952 | #undef TP_ARGS | |
953 | #undef TRACE_EVENT_FLAGS |