Commit | Line | Data |
---|---|---|
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 | */ | |
3bc29f0a MD |
39 | #undef LTTNG_TRACEPOINT_EVENT_MAP |
40 | #define LTTNG_TRACEPOINT_EVENT_MAP(name, map, proto, args, tstruct, assign, print) \ | |
41 | LTTNG_TRACEPOINT_EVENT_CLASS(map, \ | |
76e4f017 MD |
42 | PARAMS(proto), \ |
43 | PARAMS(args), \ | |
44 | PARAMS(tstruct), \ | |
45 | PARAMS(assign), \ | |
46 | PARAMS(print)) \ | |
3bc29f0a | 47 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(map, name, map, PARAMS(proto), PARAMS(args)) |
76e4f017 | 48 | |
3bc29f0a MD |
49 | #undef LTTNG_TRACEPOINT_EVENT_MAP_NOARGS |
50 | #define LTTNG_TRACEPOINT_EVENT_MAP_NOARGS(name, map, tstruct, assign, print) \ | |
51 | LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(map, \ | |
76e4f017 MD |
52 | PARAMS(tstruct), \ |
53 | PARAMS(assign), \ | |
54 | PARAMS(print)) \ | |
3bc29f0a | 55 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(map, name, map) |
76e4f017 | 56 | |
3bc29f0a MD |
57 | #undef LTTNG_TRACEPOINT_EVENT_CODE |
58 | #define LTTNG_TRACEPOINT_EVENT_CODE(name, proto, args, _locvar, _code, tstruct, assign, print) \ | |
59 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE(name, \ | |
7ca580f8 MD |
60 | PARAMS(proto), \ |
61 | PARAMS(args), \ | |
62 | PARAMS(_locvar), \ | |
63 | PARAMS(_code), \ | |
64 | PARAMS(tstruct), \ | |
65 | PARAMS(assign), \ | |
66 | PARAMS(print)) \ | |
3bc29f0a | 67 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(name, name, name, PARAMS(proto), PARAMS(args)) |
7ca580f8 | 68 | |
3bc29f0a MD |
69 | |
70 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_PRINT_MAP | |
71 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_PRINT_MAP(template, name, map, proto, args, print) \ | |
72 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(template, name, map, PARAMS(proto), PARAMS(args)) | |
76e4f017 MD |
73 | |
74 | /* Callbacks are meaningless to LTTng. */ | |
3bc29f0a MD |
75 | #undef LTTNG_TRACEPOINT_EVENT_FN_MAP |
76 | #define LTTNG_TRACEPOINT_EVENT_FN_MAP(name, map, proto, args, tstruct, \ | |
76e4f017 | 77 | assign, print, reg, unreg) \ |
3bc29f0a MD |
78 | LTTNG_TRACEPOINT_EVENT_MAP(name, map, PARAMS(proto), PARAMS(args), \ |
79 | PARAMS(tstruct), PARAMS(assign), PARAMS(print)) | |
76e4f017 | 80 | |
3bc29f0a MD |
81 | #undef LTTNG_TRACEPOINT_EVENT_CONDITION_MAP |
82 | #define LTTNG_TRACEPOINT_EVENT_CONDITION_MAP(name, map, proto, args, cond, tstruct, assign, print) \ | |
83 | LTTNG_TRACEPOINT_EVENT_MAP(name, map, \ | |
76e4f017 MD |
84 | PARAMS(proto), \ |
85 | PARAMS(args), \ | |
86 | PARAMS(tstruct), \ | |
87 | PARAMS(assign), \ | |
88 | PARAMS(print)) | |
89 | ||
40652b65 | 90 | /* |
3bc29f0a MD |
91 | * LTTNG_TRACEPOINT_EVENT_CLASS can be used to add a generic function |
92 | * handlers for events. That is, if all events have the same parameters | |
93 | * and just have distinct trace points. Each tracepoint can be defined | |
94 | * with LTTNG_TRACEPOINT_EVENT_INSTANCE and that will map the | |
95 | * LTTNG_TRACEPOINT_EVENT_CLASS to the tracepoint. | |
40652b65 | 96 | * |
3bc29f0a MD |
97 | * LTTNG_TRACEPOINT_EVENT is a one to one mapping between tracepoint and |
98 | * template. | |
40652b65 | 99 | */ |
6db3d13b | 100 | |
3bc29f0a MD |
101 | #undef LTTNG_TRACEPOINT_EVENT |
102 | #define LTTNG_TRACEPOINT_EVENT(name, proto, args, tstruct, assign, print) \ | |
103 | LTTNG_TRACEPOINT_EVENT_MAP(name, name, \ | |
104 | PARAMS(proto), \ | |
105 | PARAMS(args), \ | |
106 | PARAMS(tstruct), \ | |
107 | PARAMS(assign), \ | |
76e4f017 | 108 | PARAMS(print)) |
40652b65 | 109 | |
3bc29f0a MD |
110 | #undef LTTNG_TRACEPOINT_EVENT_NOARGS |
111 | #define LTTNG_TRACEPOINT_EVENT_NOARGS(name, tstruct, assign, print) \ | |
112 | LTTNG_TRACEPOINT_EVENT_MAP_NOARGS(name, name, \ | |
113 | PARAMS(tstruct), \ | |
114 | PARAMS(assign), \ | |
76e4f017 | 115 | PARAMS(print)) |
f7bdf4db | 116 | |
3bc29f0a MD |
117 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_PRINT |
118 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_PRINT(template, name, proto, args, print) \ | |
119 | LTTNG_TRACEPOINT_EVENT_INSTANCE_PRINT_MAP(template, name, name, \ | |
76e4f017 | 120 | PARAMS(proto), PARAMS(args), PARAMS(print_)) |
6db3d13b | 121 | |
3bc29f0a MD |
122 | #undef LTTNG_TRACEPOINT_EVENT_FN |
123 | #define LTTNG_TRACEPOINT_EVENT_FN(name, proto, args, tstruct, \ | |
6db3d13b | 124 | assign, print, reg, unreg) \ |
3bc29f0a | 125 | LTTNG_TRACEPOINT_EVENT_FN_MAP(name, name, PARAMS(proto), PARAMS(args), \ |
76e4f017 MD |
126 | PARAMS(tstruct), PARAMS(assign), PARAMS(print), \ |
127 | PARAMS(reg), PARAMS(unreg)) \ | |
128 | ||
3bc29f0a MD |
129 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE |
130 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE(template, name, proto, args) \ | |
131 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(template, name, name, PARAMS(proto), PARAMS(args)) | |
76e4f017 | 132 | |
3bc29f0a MD |
133 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS |
134 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(template, name) \ | |
135 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(template, name, name) | |
76e4f017 | 136 | |
3bc29f0a MD |
137 | #undef LTTNG_TRACEPOINT_EVENT_CONDITION |
138 | #define LTTNG_TRACEPOINT_EVENT_CONDITION(name, proto, args, cond, tstruct, assign, print) \ | |
139 | LTTNG_TRACEPOINT_EVENT_CONDITION_MAP(name, name, \ | |
76e4f017 MD |
140 | PARAMS(proto), \ |
141 | PARAMS(args), \ | |
142 | PARAMS(cond), \ | |
143 | PARAMS(tstruct), \ | |
144 | PARAMS(assign), \ | |
145 | PARAMS(print)) | |
6db3d13b | 146 | |
3bc29f0a MD |
147 | #undef LTTNG_TRACEPOINT_EVENT_CLASS |
148 | #define LTTNG_TRACEPOINT_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \ | |
149 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, PARAMS(_proto), PARAMS(_args), , , \ | |
7ca580f8 MD |
150 | PARAMS(_tstruct), PARAMS(_assign), PARAMS(_print)) |
151 | ||
3bc29f0a MD |
152 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS |
153 | #define LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(_name, _tstruct, _assign, _print) \ | |
154 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, , , PARAMS(_tstruct), \ | |
7ca580f8 MD |
155 | PARAMS(_assign), PARAMS(_print)) |
156 | ||
157 | ||
f62b389e | 158 | /* |
c099397a | 159 | * Stage 1 of the trace events. |
f62b389e MD |
160 | * |
161 | * Create dummy trace calls for each events, verifying that the LTTng module | |
3bc29f0a MD |
162 | * instrumentation headers match the kernel arguments. Will be optimized |
163 | * out by the compiler. | |
f62b389e MD |
164 | */ |
165 | ||
166 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
167 | ||
168 | #undef TP_PROTO | |
169 | #define TP_PROTO(args...) args | |
170 | ||
171 | #undef TP_ARGS | |
172 | #define TP_ARGS(args...) args | |
173 | ||
3bc29f0a MD |
174 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP |
175 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
7eb827f2 | 176 | void trace_##_name(_proto); |
f62b389e | 177 | |
3bc29f0a MD |
178 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS |
179 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
f7bdf4db MD |
180 | void trace_##_name(void *__data); |
181 | ||
f62b389e MD |
182 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
183 | ||
6db3d13b | 184 | /* |
c099397a | 185 | * Stage 2 of the trace events. |
6db3d13b MD |
186 | * |
187 | * Create event field type metadata section. | |
188 | * Each event produce an array of fields. | |
189 | */ | |
190 | ||
191 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
192 | ||
1d12cebd MD |
193 | /* Named field types must be defined in lttng-types.h */ |
194 | ||
d71e6471 MD |
195 | #undef __field_full |
196 | #define __field_full(_type, _item, _order, _base) \ | |
c099397a MD |
197 | { \ |
198 | .name = #_item, \ | |
d71e6471 | 199 | .type = __type_integer(_type, _order, _base, none), \ |
c099397a | 200 | }, |
40652b65 | 201 | |
d71e6471 MD |
202 | #undef __field |
203 | #define __field(_type, _item) \ | |
204 | __field_full(_type, _item, __BYTE_ORDER, 10) | |
205 | ||
40652b65 | 206 | #undef __field_ext |
d71e6471 MD |
207 | #define __field_ext(_type, _item, _filter_type) \ |
208 | __field(_type, _item) | |
40652b65 | 209 | |
6d20e0ae MD |
210 | #undef __field_hex |
211 | #define __field_hex(_type, _item) \ | |
212 | __field_full(_type, _item, __BYTE_ORDER, 16) | |
213 | ||
29021503 MD |
214 | #undef __field_oct |
215 | #define __field_oct(_type, _item) \ | |
216 | __field_full(_type, _item, __BYTE_ORDER, 8) | |
217 | ||
c099397a MD |
218 | #undef __field_network |
219 | #define __field_network(_type, _item) \ | |
d71e6471 MD |
220 | __field_full(_type, _item, __BIG_ENDIAN, 10) |
221 | ||
222 | #undef __field_network_hex | |
223 | #define __field_network_hex(_type, _item) \ | |
224 | __field_full(_type, _item, __BIG_ENDIAN, 16) | |
c099397a | 225 | |
d71e6471 MD |
226 | #undef __array_enc_ext |
227 | #define __array_enc_ext(_type, _item, _length, _order, _base, _encoding)\ | |
299338c8 | 228 | { \ |
c099397a MD |
229 | .name = #_item, \ |
230 | .type = \ | |
231 | { \ | |
299338c8 | 232 | .atype = atype_array, \ |
c099397a MD |
233 | .u.array = \ |
234 | { \ | |
235 | .length = _length, \ | |
d71e6471 | 236 | .elem_type = __type_integer(_type, _order, _base, _encoding), \ |
c099397a | 237 | }, \ |
299338c8 MD |
238 | }, \ |
239 | }, | |
40652b65 | 240 | |
64c796d8 MD |
241 | #undef __array |
242 | #define __array(_type, _item, _length) \ | |
d71e6471 | 243 | __array_enc_ext(_type, _item, _length, __BYTE_ORDER, 10, none) |
64c796d8 MD |
244 | |
245 | #undef __array_text | |
246 | #define __array_text(_type, _item, _length) \ | |
d71e6471 | 247 | __array_enc_ext(_type, _item, _length, __BYTE_ORDER, 10, UTF8) |
64c796d8 | 248 | |
d71e6471 MD |
249 | #undef __array_hex |
250 | #define __array_hex(_type, _item, _length) \ | |
251 | __array_enc_ext(_type, _item, _length, __BYTE_ORDER, 16, none) | |
252 | ||
253 | #undef __dynamic_array_enc_ext | |
254 | #define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding) \ | |
299338c8 | 255 | { \ |
c099397a MD |
256 | .name = #_item, \ |
257 | .type = \ | |
258 | { \ | |
299338c8 | 259 | .atype = atype_sequence, \ |
c099397a MD |
260 | .u.sequence = \ |
261 | { \ | |
64c796d8 | 262 | .length_type = __type_integer(u32, __BYTE_ORDER, 10, none), \ |
d71e6471 | 263 | .elem_type = __type_integer(_type, _order, _base, _encoding), \ |
c099397a | 264 | }, \ |
299338c8 MD |
265 | }, \ |
266 | }, | |
40652b65 | 267 | |
84da5206 MD |
268 | #undef __dynamic_array_enc_ext_2 |
269 | #define __dynamic_array_enc_ext_2(_type, _item, _length1, _length2, _order, _base, _encoding) \ | |
270 | __dynamic_array_enc_ext(_type, _item, _length1 + _length2, _order, _base, _encoding) | |
271 | ||
64c796d8 MD |
272 | #undef __dynamic_array |
273 | #define __dynamic_array(_type, _item, _length) \ | |
d71e6471 | 274 | __dynamic_array_enc_ext(_type, _item, _length, __BYTE_ORDER, 10, none) |
64c796d8 MD |
275 | |
276 | #undef __dynamic_array_text | |
277 | #define __dynamic_array_text(_type, _item, _length) \ | |
d71e6471 MD |
278 | __dynamic_array_enc_ext(_type, _item, _length, __BYTE_ORDER, 10, UTF8) |
279 | ||
280 | #undef __dynamic_array_hex | |
281 | #define __dynamic_array_hex(_type, _item, _length) \ | |
282 | __dynamic_array_enc_ext(_type, _item, _length, __BYTE_ORDER, 16, none) | |
64c796d8 | 283 | |
7ca580f8 MD |
284 | #undef __dynamic_array_network_hex |
285 | #define __dynamic_array_network_hex(_type, _item, _length) \ | |
286 | __dynamic_array_enc_ext(_type, _item, _length, __BIG_ENDIAN, 16, none) | |
287 | ||
288 | #undef __dynamic_array_network | |
289 | #define __dynamic_array_network(_type, _item, _length) \ | |
290 | __dynamic_array_enc_ext(_type, _item, _length, __BIG_ENDIAN, 10, none) | |
291 | ||
84da5206 MD |
292 | #undef __dynamic_array_text_2 |
293 | #define __dynamic_array_text_2(_type, _item, _length1, _length2) \ | |
294 | __dynamic_array_enc_ext_2(_type, _item, _length1, _length2, __BYTE_ORDER, 10, UTF8) | |
295 | ||
40652b65 | 296 | #undef __string |
1d12cebd | 297 | #define __string(_item, _src) \ |
299338c8 | 298 | { \ |
c099397a MD |
299 | .name = #_item, \ |
300 | .type = \ | |
301 | { \ | |
299338c8 | 302 | .atype = atype_string, \ |
c099397a | 303 | .u.basic.string.encoding = lttng_encode_UTF8, \ |
299338c8 MD |
304 | }, \ |
305 | }, | |
1d12cebd | 306 | |
c6e3f225 MD |
307 | #undef __string_from_user |
308 | #define __string_from_user(_item, _src) \ | |
309 | __string(_item, _src) | |
310 | ||
40652b65 | 311 | #undef TP_STRUCT__entry |
1d12cebd MD |
312 | #define TP_STRUCT__entry(args...) args /* Only one used in this phase */ |
313 | ||
3bc29f0a MD |
314 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
315 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print) \ | |
0d1d4002 MD |
316 | static const struct lttng_event_field __event_fields___##_name[] = { \ |
317 | _tstruct \ | |
299338c8 MD |
318 | }; |
319 | ||
3bc29f0a MD |
320 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
321 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code, _tstruct, _assign, _print) \ | |
322 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, PARAMS(_tstruct), PARAMS(_assign), \ | |
f7bdf4db MD |
323 | PARAMS(_print)) |
324 | ||
299338c8 MD |
325 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
326 | ||
19c57fbf | 327 | /* |
c099397a | 328 | * Stage 3 of the trace events. |
19c57fbf MD |
329 | * |
330 | * Create probe callback prototypes. | |
331 | */ | |
332 | ||
333 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
334 | ||
335 | #undef TP_PROTO | |
336 | #define TP_PROTO(args...) args | |
337 | ||
3bc29f0a MD |
338 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
339 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code, _tstruct, _assign, _print) \ | |
19c57fbf MD |
340 | static void __event_probe__##_name(void *__data, _proto); |
341 | ||
3bc29f0a MD |
342 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
343 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print) \ | |
f7bdf4db MD |
344 | static void __event_probe__##_name(void *__data); |
345 | ||
19c57fbf MD |
346 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
347 | ||
299338c8 | 348 | /* |
f7bdf4db | 349 | * Stage 3.9 of the trace events. |
299338c8 | 350 | * |
f7bdf4db | 351 | * Create event descriptions. |
299338c8 MD |
352 | */ |
353 | ||
299338c8 MD |
354 | /* Named field types must be defined in lttng-types.h */ |
355 | ||
6db3d13b | 356 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ |
299338c8 | 357 | |
1ec65de1 MD |
358 | #ifndef TP_PROBE_CB |
359 | #define TP_PROBE_CB(_template) &__event_probe__##_template | |
360 | #endif | |
361 | ||
3bc29f0a MD |
362 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS |
363 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
76e4f017 | 364 | static const struct lttng_event_desc __event_desc___##_map = { \ |
f7bdf4db | 365 | .fields = __event_fields___##_template, \ |
76e4f017 | 366 | .name = #_map, \ |
a26a7e4f | 367 | .kname = #_name, \ |
f7bdf4db MD |
368 | .probe_callback = (void *) TP_PROBE_CB(_template), \ |
369 | .nr_fields = ARRAY_SIZE(__event_fields___##_template), \ | |
370 | .owner = THIS_MODULE, \ | |
371 | }; | |
372 | ||
3bc29f0a MD |
373 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP |
374 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
375 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) | |
f7bdf4db MD |
376 | |
377 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
378 | ||
379 | ||
380 | /* | |
381 | * Stage 4 of the trace events. | |
382 | * | |
383 | * Create an array of event description pointers. | |
384 | */ | |
385 | ||
386 | /* Named field types must be defined in lttng-types.h */ | |
387 | ||
388 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
389 | ||
3bc29f0a MD |
390 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS |
391 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
76e4f017 | 392 | &__event_desc___##_map, |
f7bdf4db | 393 | |
3bc29f0a MD |
394 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP |
395 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
396 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) | |
40652b65 | 397 | |
d0dd2ecb MD |
398 | #define TP_ID1(_token, _system) _token##_system |
399 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
40652b65 | 400 | |
f7bdf4db | 401 | static const struct lttng_event_desc *TP_ID(__event_desc___, TRACE_SYSTEM)[] = { |
40652b65 | 402 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
299338c8 MD |
403 | }; |
404 | ||
d0dd2ecb MD |
405 | #undef TP_ID1 |
406 | #undef TP_ID | |
407 | ||
85a9ca7f MD |
408 | |
409 | /* | |
c099397a | 410 | * Stage 5 of the trace events. |
85a9ca7f MD |
411 | * |
412 | * Create a toplevel descriptor for the whole probe. | |
413 | */ | |
414 | ||
415 | #define TP_ID1(_token, _system) _token##_system | |
416 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
417 | ||
418 | /* non-const because list head will be modified when registered. */ | |
25631135 | 419 | static __used struct lttng_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = { |
85a9ca7f MD |
420 | .event_desc = TP_ID(__event_desc___, TRACE_SYSTEM), |
421 | .nr_events = ARRAY_SIZE(TP_ID(__event_desc___, TRACE_SYSTEM)), | |
422 | }; | |
423 | ||
424 | #undef TP_ID1 | |
425 | #undef TP_ID | |
426 | ||
d0dd2ecb | 427 | /* |
c099397a | 428 | * Stage 6 of the trace events. |
40652b65 MD |
429 | * |
430 | * Create static inline function that calculates event size. | |
431 | */ | |
432 | ||
6db3d13b | 433 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ |
40652b65 | 434 | |
6db3d13b MD |
435 | /* Named field types must be defined in lttng-types.h */ |
436 | ||
d71e6471 MD |
437 | #undef __field_full |
438 | #define __field_full(_type, _item, _order, _base) \ | |
a90917c3 | 439 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
0d1d4002 | 440 | __event_len += sizeof(_type); |
6db3d13b | 441 | |
d71e6471 MD |
442 | #undef __array_enc_ext |
443 | #define __array_enc_ext(_type, _item, _length, _order, _base, _encoding) \ | |
a90917c3 | 444 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
0d1d4002 | 445 | __event_len += sizeof(_type) * (_length); |
6db3d13b | 446 | |
d71e6471 MD |
447 | #undef __dynamic_array_enc_ext |
448 | #define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding)\ | |
7ca580f8 | 449 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(u32)); \ |
85a80742 | 450 | __event_len += sizeof(u32); \ |
a90917c3 | 451 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
41b59694 MD |
452 | __dynamic_len[__dynamic_len_idx] = (_length); \ |
453 | __event_len += sizeof(_type) * __dynamic_len[__dynamic_len_idx]; \ | |
454 | __dynamic_len_idx++; | |
6db3d13b | 455 | |
84da5206 MD |
456 | #undef __dynamic_array_enc_ext_2 |
457 | #define __dynamic_array_enc_ext_2(_type, _item, _length1, _length2, _order, _base, _encoding)\ | |
7ca580f8 | 458 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(u32)); \ |
84da5206 MD |
459 | __event_len += sizeof(u32); \ |
460 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ | |
461 | __dynamic_len[__dynamic_len_idx] = (_length1); \ | |
462 | __event_len += sizeof(_type) * __dynamic_len[__dynamic_len_idx]; \ | |
463 | __dynamic_len_idx++; \ | |
464 | __dynamic_len[__dynamic_len_idx] = (_length2); \ | |
465 | __event_len += sizeof(_type) * __dynamic_len[__dynamic_len_idx]; \ | |
466 | __dynamic_len_idx++; | |
467 | ||
6db3d13b | 468 | #undef __string |
85a80742 | 469 | #define __string(_item, _src) \ |
0d1d4002 MD |
470 | __event_len += __dynamic_len[__dynamic_len_idx++] = strlen(_src) + 1; |
471 | ||
d0255731 | 472 | /* |
786b8312 MD |
473 | * strlen_user includes \0. If returns 0, it faulted, so we set size to |
474 | * 1 (\0 only). | |
d0255731 | 475 | */ |
c6e3f225 MD |
476 | #undef __string_from_user |
477 | #define __string_from_user(_item, _src) \ | |
786b8312 | 478 | __event_len += __dynamic_len[__dynamic_len_idx++] = \ |
7b8ea3a5 | 479 | max_t(size_t, lttng_strlen_user_inatomic(_src), 1); |
c6e3f225 | 480 | |
0d1d4002 MD |
481 | #undef TP_PROTO |
482 | #define TP_PROTO(args...) args | |
6db3d13b MD |
483 | |
484 | #undef TP_STRUCT__entry | |
0d1d4002 | 485 | #define TP_STRUCT__entry(args...) args |
6db3d13b | 486 | |
7ca580f8 MD |
487 | #undef TP_locvar |
488 | #define TP_locvar(...) __VA_ARGS__ | |
489 | ||
3bc29f0a MD |
490 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
491 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code, _tstruct, _assign, _print) \ | |
7ca580f8 MD |
492 | static inline size_t __event_get_size__##_name(size_t *__dynamic_len, \ |
493 | void *__tp_locvar, _proto) \ | |
0d1d4002 MD |
494 | { \ |
495 | size_t __event_len = 0; \ | |
d3de7f14 | 496 | unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \ |
7ca580f8 | 497 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
d3de7f14 MD |
498 | \ |
499 | _tstruct \ | |
500 | return __event_len; \ | |
501 | } | |
502 | ||
3bc29f0a MD |
503 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
504 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print) \ | |
7ca580f8 MD |
505 | static inline size_t __event_get_size__##_name(size_t *__dynamic_len, \ |
506 | void *__tp_locvar) \ | |
d3de7f14 MD |
507 | { \ |
508 | size_t __event_len = 0; \ | |
509 | unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \ | |
7ca580f8 | 510 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
0d1d4002 | 511 | \ |
0d1d4002 MD |
512 | _tstruct \ |
513 | return __event_len; \ | |
6db3d13b | 514 | } |
40652b65 MD |
515 | |
516 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
517 | ||
518 | /* | |
c099397a | 519 | * Stage 7 of the trace events. |
e763dbf5 MD |
520 | * |
521 | * Create static inline function that calculates event payload alignment. | |
522 | */ | |
523 | ||
524 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
525 | ||
526 | /* Named field types must be defined in lttng-types.h */ | |
527 | ||
d71e6471 MD |
528 | #undef __field_full |
529 | #define __field_full(_type, _item, _order, _base) \ | |
a90917c3 | 530 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); |
e763dbf5 | 531 | |
d71e6471 MD |
532 | #undef __array_enc_ext |
533 | #define __array_enc_ext(_type, _item, _length, _order, _base, _encoding) \ | |
a90917c3 | 534 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); |
e763dbf5 | 535 | |
d71e6471 MD |
536 | #undef __dynamic_array_enc_ext |
537 | #define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding)\ | |
7ca580f8 | 538 | __event_align = max_t(size_t, __event_align, lttng_alignof(u32)); \ |
a90917c3 | 539 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); |
e763dbf5 | 540 | |
84da5206 MD |
541 | #undef __dynamic_array_enc_ext_2 |
542 | #define __dynamic_array_enc_ext_2(_type, _item, _length1, _length2, _order, _base, _encoding)\ | |
543 | __dynamic_array_enc_ext(_type, _item, _length1 + _length2, _order, _base, _encoding) | |
544 | ||
e763dbf5 MD |
545 | #undef __string |
546 | #define __string(_item, _src) | |
547 | ||
c6e3f225 MD |
548 | #undef __string_from_user |
549 | #define __string_from_user(_item, _src) | |
550 | ||
e763dbf5 MD |
551 | #undef TP_PROTO |
552 | #define TP_PROTO(args...) args | |
553 | ||
554 | #undef TP_STRUCT__entry | |
555 | #define TP_STRUCT__entry(args...) args | |
556 | ||
7ca580f8 MD |
557 | #undef TP_locvar |
558 | #define TP_locvar(...) __VA_ARGS__ | |
559 | ||
3bc29f0a MD |
560 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
561 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code, _tstruct, _assign, _print) \ | |
562 | static inline size_t __event_get_align__##_name(void *__tp_locvar, _proto) \ | |
e763dbf5 MD |
563 | { \ |
564 | size_t __event_align = 1; \ | |
7ca580f8 MD |
565 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
566 | \ | |
e763dbf5 MD |
567 | _tstruct \ |
568 | return __event_align; \ | |
569 | } | |
570 | ||
3bc29f0a MD |
571 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
572 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print) \ | |
7ca580f8 | 573 | static inline size_t __event_get_align__##_name(void *__tp_locvar) \ |
d3de7f14 MD |
574 | { \ |
575 | size_t __event_align = 1; \ | |
7ca580f8 MD |
576 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
577 | \ | |
d3de7f14 MD |
578 | _tstruct \ |
579 | return __event_align; \ | |
580 | } | |
581 | ||
e763dbf5 MD |
582 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
583 | ||
e763dbf5 | 584 | /* |
c099397a | 585 | * Stage 8 of the trace events. |
40652b65 | 586 | * |
3c4ffab9 MD |
587 | * Create structure declaration that allows the "assign" macros to access the |
588 | * field types. | |
589 | */ | |
590 | ||
591 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
592 | ||
593 | /* Named field types must be defined in lttng-types.h */ | |
594 | ||
d71e6471 MD |
595 | #undef __field_full |
596 | #define __field_full(_type, _item, _order, _base) _type _item; | |
3c4ffab9 | 597 | |
d71e6471 MD |
598 | #undef __array_enc_ext |
599 | #define __array_enc_ext(_type, _item, _length, _order, _base, _encoding) \ | |
600 | _type _item; | |
64c796d8 | 601 | |
d71e6471 MD |
602 | #undef __dynamic_array_enc_ext |
603 | #define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding)\ | |
604 | _type _item; | |
64c796d8 | 605 | |
84da5206 MD |
606 | #undef __dynamic_array_enc_ext_2 |
607 | #define __dynamic_array_enc_ext_2(_type, _item, _length1, _length2, _order, _base, _encoding)\ | |
608 | __dynamic_array_enc_ext(_type, _item, _length1 + _length2, _order, _base, _encoding) | |
609 | ||
3c4ffab9 | 610 | #undef __string |
c6e3f225 MD |
611 | #define __string(_item, _src) char _item; |
612 | ||
613 | #undef __string_from_user | |
614 | #define __string_from_user(_item, _src) \ | |
615 | __string(_item, _src) | |
3c4ffab9 MD |
616 | |
617 | #undef TP_STRUCT__entry | |
618 | #define TP_STRUCT__entry(args...) args | |
619 | ||
3bc29f0a MD |
620 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
621 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print) \ | |
3c4ffab9 MD |
622 | struct __event_typemap__##_name { \ |
623 | _tstruct \ | |
624 | }; | |
625 | ||
3bc29f0a MD |
626 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
627 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code, _tstruct, _assign, _print) \ | |
628 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print) | |
d3de7f14 | 629 | |
3c4ffab9 MD |
630 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
631 | ||
632 | ||
633 | /* | |
c099397a | 634 | * Stage 9 of the trace events. |
3c4ffab9 | 635 | * |
40652b65 MD |
636 | * Create the probe function : call even size calculation and write event data |
637 | * into the buffer. | |
e763dbf5 | 638 | * |
67e5e60c MD |
639 | * We use both the field and assignment macros to write the fields in the order |
640 | * defined in the field declaration. The field declarations control the | |
641 | * execution order, jumping to the appropriate assignment block. | |
40652b65 MD |
642 | */ |
643 | ||
e763dbf5 MD |
644 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ |
645 | ||
d71e6471 MD |
646 | #undef __field_full |
647 | #define __field_full(_type, _item, _order, _base) \ | |
e763dbf5 MD |
648 | goto __assign_##_item; \ |
649 | __end_field_##_item: | |
40652b65 | 650 | |
d71e6471 MD |
651 | #undef __array_enc_ext |
652 | #define __array_enc_ext(_type, _item, _length, _order, _base, _encoding)\ | |
e763dbf5 MD |
653 | goto __assign_##_item; \ |
654 | __end_field_##_item: | |
40652b65 | 655 | |
d71e6471 MD |
656 | #undef __dynamic_array_enc_ext |
657 | #define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding)\ | |
e763dbf5 MD |
658 | goto __assign_##_item##_1; \ |
659 | __end_field_##_item##_1: \ | |
e763dbf5 MD |
660 | goto __assign_##_item##_2; \ |
661 | __end_field_##_item##_2: | |
40652b65 | 662 | |
84da5206 MD |
663 | #undef __dynamic_array_enc_ext_2 |
664 | #define __dynamic_array_enc_ext_2(_type, _item, _length1, _length2, _order, _base, _encoding)\ | |
665 | goto __assign_##_item##_1; \ | |
666 | __end_field_##_item##_1: \ | |
667 | goto __assign_##_item##_2; \ | |
668 | __end_field_##_item##_2: \ | |
669 | goto __assign_##_item##_3; \ | |
670 | __end_field_##_item##_3: | |
671 | ||
e763dbf5 MD |
672 | #undef __string |
673 | #define __string(_item, _src) \ | |
674 | goto __assign_##_item; \ | |
675 | __end_field_##_item: | |
676 | ||
c6e3f225 MD |
677 | #undef __string_from_user |
678 | #define __string_from_user(_item, _src) \ | |
679 | __string(_item, _src) | |
680 | ||
e763dbf5 MD |
681 | /* |
682 | * Macros mapping tp_assign() to "=", tp_memcpy() to memcpy() and tp_strcpy() to | |
683 | * strcpy(). | |
684 | */ | |
685 | #undef tp_assign | |
686 | #define tp_assign(dest, src) \ | |
687 | __assign_##dest: \ | |
688 | { \ | |
3c4ffab9 | 689 | __typeof__(__typemap.dest) __tmp = (src); \ |
a90917c3 | 690 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp)); \ |
aaa4004a | 691 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ |
e763dbf5 MD |
692 | } \ |
693 | goto __end_field_##dest; | |
694 | ||
d9a7cf03 FG |
695 | /* fixed length array memcpy */ |
696 | #undef tp_memcpy_gen | |
697 | #define tp_memcpy_gen(write_ops, dest, src, len) \ | |
e763dbf5 | 698 | __assign_##dest: \ |
d793d5e1 MD |
699 | if (0) \ |
700 | (void) __typemap.dest; \ | |
a90917c3 | 701 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__typemap.dest)); \ |
d9a7cf03 | 702 | __chan->ops->write_ops(&__ctx, src, len); \ |
e763dbf5 MD |
703 | goto __end_field_##dest; |
704 | ||
d9a7cf03 FG |
705 | #undef tp_memcpy |
706 | #define tp_memcpy(dest, src, len) \ | |
707 | tp_memcpy_gen(event_write, dest, src, len) | |
708 | ||
709 | #undef tp_memcpy_from_user | |
710 | #define tp_memcpy_from_user(dest, src, len) \ | |
711 | tp_memcpy_gen(event_write_from_user, dest, src, len) | |
712 | ||
713 | /* variable length sequence memcpy */ | |
714 | #undef tp_memcpy_dyn_gen | |
715 | #define tp_memcpy_dyn_gen(write_ops, dest, src) \ | |
e763dbf5 MD |
716 | __assign_##dest##_1: \ |
717 | { \ | |
41b59694 | 718 | u32 __tmpl = __dynamic_len[__dynamic_len_idx]; \ |
a90917c3 | 719 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(u32)); \ |
aaa4004a | 720 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(u32)); \ |
e763dbf5 MD |
721 | } \ |
722 | goto __end_field_##dest##_1; \ | |
723 | __assign_##dest##_2: \ | |
a90917c3 | 724 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__typemap.dest)); \ |
d9a7cf03 | 725 | __chan->ops->write_ops(&__ctx, src, \ |
41b59694 | 726 | sizeof(__typemap.dest) * __get_dynamic_array_len(dest));\ |
e763dbf5 | 727 | goto __end_field_##dest##_2; |
58aa5d24 | 728 | |
84da5206 MD |
729 | #undef tp_memcpy_dyn_gen_2 |
730 | #define tp_memcpy_dyn_gen_2(write_ops, dest, src1, src2) \ | |
731 | __assign_##dest##_1: \ | |
732 | { \ | |
733 | u32 __tmpl = __dynamic_len[__dynamic_len_idx] \ | |
734 | + __dynamic_len[__dynamic_len_idx + 1]; \ | |
735 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(u32)); \ | |
736 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(u32)); \ | |
737 | } \ | |
738 | goto __end_field_##dest##_1; \ | |
739 | __assign_##dest##_2: \ | |
740 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__typemap.dest)); \ | |
741 | __chan->ops->write_ops(&__ctx, src1, \ | |
742 | sizeof(__typemap.dest) * __get_dynamic_array_len(dest));\ | |
743 | goto __end_field_##dest##_2; \ | |
744 | __assign_##dest##_3: \ | |
745 | __chan->ops->write_ops(&__ctx, src2, \ | |
746 | sizeof(__typemap.dest) * __get_dynamic_array_len(dest));\ | |
747 | goto __end_field_##dest##_3; | |
748 | ||
d9a7cf03 FG |
749 | #undef tp_memcpy_dyn |
750 | #define tp_memcpy_dyn(dest, src) \ | |
751 | tp_memcpy_dyn_gen(event_write, dest, src) | |
752 | ||
84da5206 MD |
753 | #undef tp_memcpy_dyn_2 |
754 | #define tp_memcpy_dyn_2(dest, src1, src2) \ | |
755 | tp_memcpy_dyn_gen_2(event_write, dest, src1, src2) | |
756 | ||
d9a7cf03 FG |
757 | #undef tp_memcpy_dyn_from_user |
758 | #define tp_memcpy_dyn_from_user(dest, src) \ | |
759 | tp_memcpy_dyn_gen(event_write_from_user, dest, src) | |
58aa5d24 | 760 | |
d0255731 | 761 | /* |
786b8312 | 762 | * The string length including the final \0. |
d0255731 | 763 | */ |
4ea00e4f | 764 | #undef tp_copy_string_from_user |
58aa5d24 | 765 | #define tp_copy_string_from_user(dest, src) \ |
16f78f3a MD |
766 | __assign_##dest: \ |
767 | if (0) \ | |
768 | (void) __typemap.dest; \ | |
769 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__typemap.dest)); \ | |
770 | __chan->ops->event_strcpy_from_user(&__ctx, src, \ | |
771 | __get_dynamic_array_len(dest)); \ | |
4ea00e4f | 772 | goto __end_field_##dest; |
16f78f3a | 773 | |
e763dbf5 MD |
774 | #undef tp_strcpy |
775 | #define tp_strcpy(dest, src) \ | |
16f78f3a MD |
776 | __assign_##dest: \ |
777 | if (0) \ | |
778 | (void) __typemap.dest; \ | |
779 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__typemap.dest)); \ | |
780 | __chan->ops->event_strcpy(&__ctx, src, __get_dynamic_array_len(dest)); \ | |
781 | goto __end_field_##dest; | |
40652b65 | 782 | |
e763dbf5 MD |
783 | /* Named field types must be defined in lttng-types.h */ |
784 | ||
785 | #undef __get_str | |
786 | #define __get_str(field) field | |
787 | ||
788 | #undef __get_dynamic_array | |
789 | #define __get_dynamic_array(field) field | |
790 | ||
791 | /* Beware: this get len actually consumes the len value */ | |
792 | #undef __get_dynamic_array_len | |
793 | #define __get_dynamic_array_len(field) __dynamic_len[__dynamic_len_idx++] | |
794 | ||
795 | #undef TP_PROTO | |
796 | #define TP_PROTO(args...) args | |
797 | ||
798 | #undef TP_ARGS | |
799 | #define TP_ARGS(args...) args | |
800 | ||
801 | #undef TP_STRUCT__entry | |
802 | #define TP_STRUCT__entry(args...) args | |
803 | ||
804 | #undef TP_fast_assign | |
805 | #define TP_fast_assign(args...) args | |
806 | ||
7ca580f8 MD |
807 | #undef TP_locvar |
808 | #define TP_locvar(...) __VA_ARGS__ | |
809 | ||
810 | #undef TP_code | |
811 | #define TP_code(...) __VA_ARGS__ | |
812 | ||
c337ddc2 MD |
813 | /* |
814 | * For state dump, check that "session" argument (mandatory) matches the | |
815 | * session this event belongs to. Ensures that we write state dump data only | |
816 | * into the started session, not into all sessions. | |
817 | */ | |
818 | #ifdef TP_SESSION_CHECK | |
819 | #define _TP_SESSION_CHECK(session, csession) (session == csession) | |
820 | #else /* TP_SESSION_CHECK */ | |
821 | #define _TP_SESSION_CHECK(session, csession) 1 | |
822 | #endif /* TP_SESSION_CHECK */ | |
823 | ||
f9771d39 MD |
824 | /* |
825 | * __dynamic_len array length is twice the number of fields due to | |
826 | * __dynamic_array_enc_ext_2() and tp_memcpy_dyn_2(), which are the | |
827 | * worse case, needing 2 entries per field. | |
828 | */ | |
3bc29f0a MD |
829 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
830 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code, _tstruct, _assign, _print) \ | |
e763dbf5 MD |
831 | static void __event_probe__##_name(void *__data, _proto) \ |
832 | { \ | |
7ca580f8 | 833 | struct probe_local_vars { _locvar }; \ |
a90917c3 MD |
834 | struct lttng_event *__event = __data; \ |
835 | struct lttng_channel *__chan = __event->chan; \ | |
aaa4004a | 836 | struct lib_ring_buffer_ctx __ctx; \ |
e763dbf5 | 837 | size_t __event_len, __event_align; \ |
d3de7f14 MD |
838 | size_t __dynamic_len_idx __attribute__((unused)) = 0; \ |
839 | size_t __dynamic_len[2 * ARRAY_SIZE(__event_fields___##_name)] __attribute__((unused)); \ | |
840 | struct __event_typemap__##_name __typemap __attribute__((unused)); \ | |
e763dbf5 | 841 | int __ret; \ |
7ca580f8 MD |
842 | struct probe_local_vars __tp_locvar; \ |
843 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
844 | &__tp_locvar; \ | |
e763dbf5 | 845 | \ |
c337ddc2 MD |
846 | if (!_TP_SESSION_CHECK(session, __chan->session)) \ |
847 | return; \ | |
e64957da MD |
848 | if (unlikely(!ACCESS_ONCE(__chan->session->active))) \ |
849 | return; \ | |
850 | if (unlikely(!ACCESS_ONCE(__chan->enabled))) \ | |
851 | return; \ | |
852 | if (unlikely(!ACCESS_ONCE(__event->enabled))) \ | |
52fc2e1f | 853 | return; \ |
7ca580f8 MD |
854 | _code \ |
855 | __event_len = __event_get_size__##_name(__dynamic_len, tp_locvar, \ | |
856 | _args); \ | |
857 | __event_align = __event_get_align__##_name(tp_locvar, _args); \ | |
aaa4004a | 858 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, __event, __event_len, \ |
e763dbf5 | 859 | __event_align, -1); \ |
aaa4004a | 860 | __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ |
e763dbf5 MD |
861 | if (__ret < 0) \ |
862 | return; \ | |
863 | /* Control code (field ordering) */ \ | |
864 | _tstruct \ | |
aaa4004a | 865 | __chan->ops->event_commit(&__ctx); \ |
e763dbf5 MD |
866 | return; \ |
867 | /* Copy code, steered by control code */ \ | |
868 | _assign \ | |
869 | } | |
870 | ||
3bc29f0a MD |
871 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
872 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print) \ | |
f7bdf4db MD |
873 | static void __event_probe__##_name(void *__data) \ |
874 | { \ | |
7ca580f8 | 875 | struct probe_local_vars { _locvar }; \ |
a90917c3 MD |
876 | struct lttng_event *__event = __data; \ |
877 | struct lttng_channel *__chan = __event->chan; \ | |
f7bdf4db MD |
878 | struct lib_ring_buffer_ctx __ctx; \ |
879 | size_t __event_len, __event_align; \ | |
d3de7f14 MD |
880 | size_t __dynamic_len_idx __attribute__((unused)) = 0; \ |
881 | size_t __dynamic_len[2 * ARRAY_SIZE(__event_fields___##_name)] __attribute__((unused)); \ | |
882 | struct __event_typemap__##_name __typemap __attribute__((unused)); \ | |
f7bdf4db | 883 | int __ret; \ |
7ca580f8 MD |
884 | struct probe_local_vars __tp_locvar; \ |
885 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
886 | &__tp_locvar; \ | |
f7bdf4db | 887 | \ |
c337ddc2 MD |
888 | if (!_TP_SESSION_CHECK(session, __chan->session)) \ |
889 | return; \ | |
f7bdf4db MD |
890 | if (unlikely(!ACCESS_ONCE(__chan->session->active))) \ |
891 | return; \ | |
892 | if (unlikely(!ACCESS_ONCE(__chan->enabled))) \ | |
893 | return; \ | |
894 | if (unlikely(!ACCESS_ONCE(__event->enabled))) \ | |
895 | return; \ | |
7ca580f8 MD |
896 | _code \ |
897 | __event_len = __event_get_size__##_name(__dynamic_len, tp_locvar); \ | |
898 | __event_align = __event_get_align__##_name(tp_locvar); \ | |
f7bdf4db MD |
899 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, __event, __event_len, \ |
900 | __event_align, -1); \ | |
901 | __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ | |
902 | if (__ret < 0) \ | |
903 | return; \ | |
904 | /* Control code (field ordering) */ \ | |
905 | _tstruct \ | |
906 | __chan->ops->event_commit(&__ctx); \ | |
907 | return; \ | |
908 | /* Copy code, steered by control code */ \ | |
909 | _assign \ | |
910 | } | |
911 | ||
e763dbf5 MD |
912 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
913 | ||
3afe7aac | 914 | /* |
c099397a | 915 | * Stage 10 of the trace events. |
3afe7aac MD |
916 | * |
917 | * Register/unregister probes at module load/unload. | |
918 | */ | |
919 | ||
920 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
921 | ||
922 | #define TP_ID1(_token, _system) _token##_system | |
923 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
924 | #define module_init_eval1(_token, _system) module_init(_token##_system) | |
925 | #define module_init_eval(_token, _system) module_init_eval1(_token, _system) | |
926 | #define module_exit_eval1(_token, _system) module_exit(_token##_system) | |
927 | #define module_exit_eval(_token, _system) module_exit_eval1(_token, _system) | |
928 | ||
2655f9ad | 929 | #ifndef TP_MODULE_NOINIT |
3afe7aac MD |
930 | static int TP_ID(__lttng_events_init__, TRACE_SYSTEM)(void) |
931 | { | |
6d2a620c | 932 | wrapper_vmalloc_sync_all(); |
a90917c3 | 933 | return lttng_probe_register(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
934 | } |
935 | ||
3afe7aac MD |
936 | static void TP_ID(__lttng_events_exit__, TRACE_SYSTEM)(void) |
937 | { | |
a90917c3 | 938 | lttng_probe_unregister(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
939 | } |
940 | ||
2655f9ad MD |
941 | #ifndef TP_MODULE_NOAUTOLOAD |
942 | module_init_eval(__lttng_events_init__, TRACE_SYSTEM); | |
3afe7aac | 943 | module_exit_eval(__lttng_events_exit__, TRACE_SYSTEM); |
259b6cb3 | 944 | #endif |
3afe7aac | 945 | |
2655f9ad MD |
946 | #endif |
947 | ||
3afe7aac MD |
948 | #undef module_init_eval |
949 | #undef module_exit_eval | |
950 | #undef TP_ID1 | |
951 | #undef TP_ID | |
177b3692 MD |
952 | |
953 | #undef TP_PROTO | |
954 | #undef TP_ARGS |