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 | |
54f9f68d MD |
31 | #define __LTTNG_NULL_STRING "(null)" |
32 | ||
40652b65 | 33 | /* |
6db3d13b | 34 | * Macro declarations used for all stages. |
40652b65 MD |
35 | */ |
36 | ||
76e4f017 MD |
37 | /* |
38 | * LTTng name mapping macros. LTTng remaps some of the kernel events to | |
39 | * enforce name-spacing. | |
40 | */ | |
3bc29f0a MD |
41 | #undef LTTNG_TRACEPOINT_EVENT_MAP |
42 | #define LTTNG_TRACEPOINT_EVENT_MAP(name, map, proto, args, tstruct, assign, print) \ | |
43 | LTTNG_TRACEPOINT_EVENT_CLASS(map, \ | |
76e4f017 MD |
44 | PARAMS(proto), \ |
45 | PARAMS(args), \ | |
46 | PARAMS(tstruct), \ | |
47 | PARAMS(assign), \ | |
48 | PARAMS(print)) \ | |
3bc29f0a | 49 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(map, name, map, PARAMS(proto), PARAMS(args)) |
76e4f017 | 50 | |
3bc29f0a MD |
51 | #undef LTTNG_TRACEPOINT_EVENT_MAP_NOARGS |
52 | #define LTTNG_TRACEPOINT_EVENT_MAP_NOARGS(name, map, tstruct, assign, print) \ | |
53 | LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(map, \ | |
76e4f017 MD |
54 | PARAMS(tstruct), \ |
55 | PARAMS(assign), \ | |
56 | PARAMS(print)) \ | |
3bc29f0a | 57 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(map, name, map) |
76e4f017 | 58 | |
3bc29f0a MD |
59 | #undef LTTNG_TRACEPOINT_EVENT_CODE |
60 | #define LTTNG_TRACEPOINT_EVENT_CODE(name, proto, args, _locvar, _code, tstruct, assign, print) \ | |
61 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE(name, \ | |
7ca580f8 MD |
62 | PARAMS(proto), \ |
63 | PARAMS(args), \ | |
64 | PARAMS(_locvar), \ | |
65 | PARAMS(_code), \ | |
66 | PARAMS(tstruct), \ | |
67 | PARAMS(assign), \ | |
68 | PARAMS(print)) \ | |
3bc29f0a | 69 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(name, name, name, PARAMS(proto), PARAMS(args)) |
7ca580f8 | 70 | |
3bc29f0a MD |
71 | |
72 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_PRINT_MAP | |
73 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_PRINT_MAP(template, name, map, proto, args, print) \ | |
74 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(template, name, map, PARAMS(proto), PARAMS(args)) | |
76e4f017 MD |
75 | |
76 | /* Callbacks are meaningless to LTTng. */ | |
3bc29f0a MD |
77 | #undef LTTNG_TRACEPOINT_EVENT_FN_MAP |
78 | #define LTTNG_TRACEPOINT_EVENT_FN_MAP(name, map, proto, args, tstruct, \ | |
76e4f017 | 79 | assign, print, reg, unreg) \ |
3bc29f0a MD |
80 | LTTNG_TRACEPOINT_EVENT_MAP(name, map, PARAMS(proto), PARAMS(args), \ |
81 | PARAMS(tstruct), PARAMS(assign), PARAMS(print)) | |
76e4f017 | 82 | |
3bc29f0a MD |
83 | #undef LTTNG_TRACEPOINT_EVENT_CONDITION_MAP |
84 | #define LTTNG_TRACEPOINT_EVENT_CONDITION_MAP(name, map, proto, args, cond, tstruct, assign, print) \ | |
85 | LTTNG_TRACEPOINT_EVENT_MAP(name, map, \ | |
76e4f017 MD |
86 | PARAMS(proto), \ |
87 | PARAMS(args), \ | |
88 | PARAMS(tstruct), \ | |
89 | PARAMS(assign), \ | |
90 | PARAMS(print)) | |
91 | ||
fcf7fa33 MD |
92 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_CONDITION_MAP |
93 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_CONDITION_MAP(template, name, map, proto, args, cond) \ | |
94 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(template, name, map, PARAMS(proto), PARAMS(args)) | |
95 | ||
40652b65 | 96 | /* |
3bc29f0a MD |
97 | * LTTNG_TRACEPOINT_EVENT_CLASS can be used to add a generic function |
98 | * handlers for events. That is, if all events have the same parameters | |
99 | * and just have distinct trace points. Each tracepoint can be defined | |
100 | * with LTTNG_TRACEPOINT_EVENT_INSTANCE and that will map the | |
101 | * LTTNG_TRACEPOINT_EVENT_CLASS to the tracepoint. | |
40652b65 | 102 | * |
3bc29f0a MD |
103 | * LTTNG_TRACEPOINT_EVENT is a one to one mapping between tracepoint and |
104 | * template. | |
40652b65 | 105 | */ |
6db3d13b | 106 | |
3bc29f0a MD |
107 | #undef LTTNG_TRACEPOINT_EVENT |
108 | #define LTTNG_TRACEPOINT_EVENT(name, proto, args, tstruct, assign, print) \ | |
109 | LTTNG_TRACEPOINT_EVENT_MAP(name, name, \ | |
110 | PARAMS(proto), \ | |
111 | PARAMS(args), \ | |
112 | PARAMS(tstruct), \ | |
113 | PARAMS(assign), \ | |
76e4f017 | 114 | PARAMS(print)) |
40652b65 | 115 | |
3bc29f0a MD |
116 | #undef LTTNG_TRACEPOINT_EVENT_NOARGS |
117 | #define LTTNG_TRACEPOINT_EVENT_NOARGS(name, tstruct, assign, print) \ | |
118 | LTTNG_TRACEPOINT_EVENT_MAP_NOARGS(name, name, \ | |
119 | PARAMS(tstruct), \ | |
120 | PARAMS(assign), \ | |
76e4f017 | 121 | PARAMS(print)) |
f7bdf4db | 122 | |
3bc29f0a MD |
123 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_PRINT |
124 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_PRINT(template, name, proto, args, print) \ | |
125 | LTTNG_TRACEPOINT_EVENT_INSTANCE_PRINT_MAP(template, name, name, \ | |
76e4f017 | 126 | PARAMS(proto), PARAMS(args), PARAMS(print_)) |
6db3d13b | 127 | |
3bc29f0a MD |
128 | #undef LTTNG_TRACEPOINT_EVENT_FN |
129 | #define LTTNG_TRACEPOINT_EVENT_FN(name, proto, args, tstruct, \ | |
6db3d13b | 130 | assign, print, reg, unreg) \ |
3bc29f0a | 131 | LTTNG_TRACEPOINT_EVENT_FN_MAP(name, name, PARAMS(proto), PARAMS(args), \ |
76e4f017 MD |
132 | PARAMS(tstruct), PARAMS(assign), PARAMS(print), \ |
133 | PARAMS(reg), PARAMS(unreg)) \ | |
134 | ||
3bc29f0a MD |
135 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE |
136 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE(template, name, proto, args) \ | |
137 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(template, name, name, PARAMS(proto), PARAMS(args)) | |
76e4f017 | 138 | |
3bc29f0a MD |
139 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS |
140 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(template, name) \ | |
141 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(template, name, name) | |
76e4f017 | 142 | |
3bc29f0a MD |
143 | #undef LTTNG_TRACEPOINT_EVENT_CONDITION |
144 | #define LTTNG_TRACEPOINT_EVENT_CONDITION(name, proto, args, cond, tstruct, assign, print) \ | |
145 | LTTNG_TRACEPOINT_EVENT_CONDITION_MAP(name, name, \ | |
76e4f017 MD |
146 | PARAMS(proto), \ |
147 | PARAMS(args), \ | |
148 | PARAMS(cond), \ | |
149 | PARAMS(tstruct), \ | |
150 | PARAMS(assign), \ | |
151 | PARAMS(print)) | |
6db3d13b | 152 | |
3bc29f0a MD |
153 | #undef LTTNG_TRACEPOINT_EVENT_CLASS |
154 | #define LTTNG_TRACEPOINT_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \ | |
155 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, PARAMS(_proto), PARAMS(_args), , , \ | |
7ca580f8 MD |
156 | PARAMS(_tstruct), PARAMS(_assign), PARAMS(_print)) |
157 | ||
3bc29f0a MD |
158 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS |
159 | #define LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(_name, _tstruct, _assign, _print) \ | |
160 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, , , PARAMS(_tstruct), \ | |
7ca580f8 MD |
161 | PARAMS(_assign), PARAMS(_print)) |
162 | ||
163 | ||
f62b389e | 164 | /* |
c099397a | 165 | * Stage 1 of the trace events. |
f62b389e MD |
166 | * |
167 | * Create dummy trace calls for each events, verifying that the LTTng module | |
3bc29f0a MD |
168 | * instrumentation headers match the kernel arguments. Will be optimized |
169 | * out by the compiler. | |
f62b389e MD |
170 | */ |
171 | ||
172 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
173 | ||
174 | #undef TP_PROTO | |
175 | #define TP_PROTO(args...) args | |
176 | ||
177 | #undef TP_ARGS | |
178 | #define TP_ARGS(args...) args | |
179 | ||
3bc29f0a MD |
180 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP |
181 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
7eb827f2 | 182 | void trace_##_name(_proto); |
f62b389e | 183 | |
3bc29f0a MD |
184 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS |
185 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
03a98277 | 186 | void trace_##_name(void); |
f7bdf4db | 187 | |
c782f1f3 MD |
188 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
189 | ||
190 | /* | |
6633b022 MD |
191 | * Stage 1.1 of the trace events. |
192 | * | |
193 | * Create dummy trace prototypes for each event class, and for each used | |
194 | * template. This will allow checking whether the prototypes from the | |
195 | * class and the instance using the class actually match. | |
196 | */ | |
197 | ||
198 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
199 | ||
200 | #undef TP_PROTO | |
201 | #define TP_PROTO(args...) args | |
202 | ||
203 | #undef TP_ARGS | |
204 | #define TP_ARGS(args...) args | |
205 | ||
206 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
207 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
208 | void __event_template_proto___##_template(_proto); | |
209 | ||
210 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
211 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
212 | void __event_template_proto___##_template(void); | |
213 | ||
214 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE | |
215 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code, _tstruct, _assign, _print) \ | |
216 | void __event_template_proto___##_name(_proto); | |
217 | ||
218 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS | |
219 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print) \ | |
220 | void __event_template_proto___##_name(void); | |
221 | ||
f62b389e MD |
222 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
223 | ||
6db3d13b | 224 | /* |
c099397a | 225 | * Stage 2 of the trace events. |
6db3d13b MD |
226 | * |
227 | * Create event field type metadata section. | |
228 | * Each event produce an array of fields. | |
229 | */ | |
230 | ||
231 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
232 | ||
1d12cebd MD |
233 | /* Named field types must be defined in lttng-types.h */ |
234 | ||
d71e6471 MD |
235 | #undef __field_full |
236 | #define __field_full(_type, _item, _order, _base) \ | |
c099397a MD |
237 | { \ |
238 | .name = #_item, \ | |
d71e6471 | 239 | .type = __type_integer(_type, _order, _base, none), \ |
c099397a | 240 | }, |
40652b65 | 241 | |
d71e6471 MD |
242 | #undef __field |
243 | #define __field(_type, _item) \ | |
244 | __field_full(_type, _item, __BYTE_ORDER, 10) | |
245 | ||
40652b65 | 246 | #undef __field_ext |
d71e6471 MD |
247 | #define __field_ext(_type, _item, _filter_type) \ |
248 | __field(_type, _item) | |
40652b65 | 249 | |
6d20e0ae MD |
250 | #undef __field_hex |
251 | #define __field_hex(_type, _item) \ | |
252 | __field_full(_type, _item, __BYTE_ORDER, 16) | |
253 | ||
29021503 MD |
254 | #undef __field_oct |
255 | #define __field_oct(_type, _item) \ | |
256 | __field_full(_type, _item, __BYTE_ORDER, 8) | |
257 | ||
c099397a MD |
258 | #undef __field_network |
259 | #define __field_network(_type, _item) \ | |
d71e6471 MD |
260 | __field_full(_type, _item, __BIG_ENDIAN, 10) |
261 | ||
262 | #undef __field_network_hex | |
263 | #define __field_network_hex(_type, _item) \ | |
264 | __field_full(_type, _item, __BIG_ENDIAN, 16) | |
c099397a | 265 | |
d71e6471 MD |
266 | #undef __array_enc_ext |
267 | #define __array_enc_ext(_type, _item, _length, _order, _base, _encoding)\ | |
299338c8 | 268 | { \ |
c099397a MD |
269 | .name = #_item, \ |
270 | .type = \ | |
271 | { \ | |
299338c8 | 272 | .atype = atype_array, \ |
c099397a MD |
273 | .u.array = \ |
274 | { \ | |
275 | .length = _length, \ | |
d71e6471 | 276 | .elem_type = __type_integer(_type, _order, _base, _encoding), \ |
c099397a | 277 | }, \ |
299338c8 MD |
278 | }, \ |
279 | }, | |
40652b65 | 280 | |
64c796d8 MD |
281 | #undef __array |
282 | #define __array(_type, _item, _length) \ | |
d71e6471 | 283 | __array_enc_ext(_type, _item, _length, __BYTE_ORDER, 10, none) |
64c796d8 MD |
284 | |
285 | #undef __array_text | |
286 | #define __array_text(_type, _item, _length) \ | |
d71e6471 | 287 | __array_enc_ext(_type, _item, _length, __BYTE_ORDER, 10, UTF8) |
64c796d8 | 288 | |
d71e6471 MD |
289 | #undef __array_hex |
290 | #define __array_hex(_type, _item, _length) \ | |
291 | __array_enc_ext(_type, _item, _length, __BYTE_ORDER, 16, none) | |
292 | ||
293 | #undef __dynamic_array_enc_ext | |
294 | #define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding) \ | |
299338c8 | 295 | { \ |
c099397a MD |
296 | .name = #_item, \ |
297 | .type = \ | |
298 | { \ | |
299338c8 | 299 | .atype = atype_sequence, \ |
c099397a MD |
300 | .u.sequence = \ |
301 | { \ | |
64c796d8 | 302 | .length_type = __type_integer(u32, __BYTE_ORDER, 10, none), \ |
d71e6471 | 303 | .elem_type = __type_integer(_type, _order, _base, _encoding), \ |
c099397a | 304 | }, \ |
299338c8 MD |
305 | }, \ |
306 | }, | |
40652b65 | 307 | |
84da5206 MD |
308 | #undef __dynamic_array_enc_ext_2 |
309 | #define __dynamic_array_enc_ext_2(_type, _item, _length1, _length2, _order, _base, _encoding) \ | |
310 | __dynamic_array_enc_ext(_type, _item, _length1 + _length2, _order, _base, _encoding) | |
311 | ||
64c796d8 MD |
312 | #undef __dynamic_array |
313 | #define __dynamic_array(_type, _item, _length) \ | |
d71e6471 | 314 | __dynamic_array_enc_ext(_type, _item, _length, __BYTE_ORDER, 10, none) |
64c796d8 MD |
315 | |
316 | #undef __dynamic_array_text | |
317 | #define __dynamic_array_text(_type, _item, _length) \ | |
d71e6471 MD |
318 | __dynamic_array_enc_ext(_type, _item, _length, __BYTE_ORDER, 10, UTF8) |
319 | ||
320 | #undef __dynamic_array_hex | |
321 | #define __dynamic_array_hex(_type, _item, _length) \ | |
322 | __dynamic_array_enc_ext(_type, _item, _length, __BYTE_ORDER, 16, none) | |
64c796d8 | 323 | |
7ca580f8 MD |
324 | #undef __dynamic_array_network_hex |
325 | #define __dynamic_array_network_hex(_type, _item, _length) \ | |
326 | __dynamic_array_enc_ext(_type, _item, _length, __BIG_ENDIAN, 16, none) | |
327 | ||
328 | #undef __dynamic_array_network | |
329 | #define __dynamic_array_network(_type, _item, _length) \ | |
330 | __dynamic_array_enc_ext(_type, _item, _length, __BIG_ENDIAN, 10, none) | |
331 | ||
84da5206 MD |
332 | #undef __dynamic_array_text_2 |
333 | #define __dynamic_array_text_2(_type, _item, _length1, _length2) \ | |
334 | __dynamic_array_enc_ext_2(_type, _item, _length1, _length2, __BYTE_ORDER, 10, UTF8) | |
335 | ||
40652b65 | 336 | #undef __string |
1d12cebd | 337 | #define __string(_item, _src) \ |
299338c8 | 338 | { \ |
c099397a MD |
339 | .name = #_item, \ |
340 | .type = \ | |
341 | { \ | |
299338c8 | 342 | .atype = atype_string, \ |
c099397a | 343 | .u.basic.string.encoding = lttng_encode_UTF8, \ |
299338c8 MD |
344 | }, \ |
345 | }, | |
1d12cebd | 346 | |
c6e3f225 MD |
347 | #undef __string_from_user |
348 | #define __string_from_user(_item, _src) \ | |
349 | __string(_item, _src) | |
350 | ||
40652b65 | 351 | #undef TP_STRUCT__entry |
1d12cebd MD |
352 | #define TP_STRUCT__entry(args...) args /* Only one used in this phase */ |
353 | ||
3bc29f0a MD |
354 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
355 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print) \ | |
0d1d4002 MD |
356 | static const struct lttng_event_field __event_fields___##_name[] = { \ |
357 | _tstruct \ | |
299338c8 MD |
358 | }; |
359 | ||
3bc29f0a MD |
360 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
361 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code, _tstruct, _assign, _print) \ | |
362 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, PARAMS(_tstruct), PARAMS(_assign), \ | |
f7bdf4db MD |
363 | PARAMS(_print)) |
364 | ||
299338c8 MD |
365 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
366 | ||
19c57fbf | 367 | /* |
c099397a | 368 | * Stage 3 of the trace events. |
19c57fbf MD |
369 | * |
370 | * Create probe callback prototypes. | |
371 | */ | |
372 | ||
373 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
374 | ||
375 | #undef TP_PROTO | |
376 | #define TP_PROTO(args...) args | |
377 | ||
3bc29f0a MD |
378 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
379 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code, _tstruct, _assign, _print) \ | |
19c57fbf MD |
380 | static void __event_probe__##_name(void *__data, _proto); |
381 | ||
3bc29f0a MD |
382 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
383 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print) \ | |
f7bdf4db MD |
384 | static void __event_probe__##_name(void *__data); |
385 | ||
19c57fbf MD |
386 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
387 | ||
299338c8 | 388 | /* |
f7bdf4db | 389 | * Stage 3.9 of the trace events. |
299338c8 | 390 | * |
f7bdf4db | 391 | * Create event descriptions. |
299338c8 MD |
392 | */ |
393 | ||
299338c8 MD |
394 | /* Named field types must be defined in lttng-types.h */ |
395 | ||
6db3d13b | 396 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ |
299338c8 | 397 | |
1ec65de1 MD |
398 | #ifndef TP_PROBE_CB |
399 | #define TP_PROBE_CB(_template) &__event_probe__##_template | |
400 | #endif | |
401 | ||
3bc29f0a MD |
402 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS |
403 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
76e4f017 | 404 | static const struct lttng_event_desc __event_desc___##_map = { \ |
f7bdf4db | 405 | .fields = __event_fields___##_template, \ |
76e4f017 | 406 | .name = #_map, \ |
a26a7e4f | 407 | .kname = #_name, \ |
f7bdf4db MD |
408 | .probe_callback = (void *) TP_PROBE_CB(_template), \ |
409 | .nr_fields = ARRAY_SIZE(__event_fields___##_template), \ | |
410 | .owner = THIS_MODULE, \ | |
411 | }; | |
412 | ||
3bc29f0a MD |
413 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP |
414 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
415 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) | |
f7bdf4db MD |
416 | |
417 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
418 | ||
419 | ||
420 | /* | |
421 | * Stage 4 of the trace events. | |
422 | * | |
423 | * Create an array of event description pointers. | |
424 | */ | |
425 | ||
426 | /* Named field types must be defined in lttng-types.h */ | |
427 | ||
428 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
429 | ||
3bc29f0a MD |
430 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS |
431 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
76e4f017 | 432 | &__event_desc___##_map, |
f7bdf4db | 433 | |
3bc29f0a MD |
434 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP |
435 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
436 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) | |
40652b65 | 437 | |
d0dd2ecb MD |
438 | #define TP_ID1(_token, _system) _token##_system |
439 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
40652b65 | 440 | |
f7bdf4db | 441 | static const struct lttng_event_desc *TP_ID(__event_desc___, TRACE_SYSTEM)[] = { |
40652b65 | 442 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
299338c8 MD |
443 | }; |
444 | ||
d0dd2ecb MD |
445 | #undef TP_ID1 |
446 | #undef TP_ID | |
447 | ||
85a9ca7f MD |
448 | |
449 | /* | |
c099397a | 450 | * Stage 5 of the trace events. |
85a9ca7f MD |
451 | * |
452 | * Create a toplevel descriptor for the whole probe. | |
453 | */ | |
454 | ||
455 | #define TP_ID1(_token, _system) _token##_system | |
456 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
457 | ||
458 | /* non-const because list head will be modified when registered. */ | |
25631135 | 459 | static __used struct lttng_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = { |
85a9ca7f MD |
460 | .event_desc = TP_ID(__event_desc___, TRACE_SYSTEM), |
461 | .nr_events = ARRAY_SIZE(TP_ID(__event_desc___, TRACE_SYSTEM)), | |
462 | }; | |
463 | ||
464 | #undef TP_ID1 | |
465 | #undef TP_ID | |
466 | ||
d0dd2ecb | 467 | /* |
c099397a | 468 | * Stage 6 of the trace events. |
40652b65 MD |
469 | * |
470 | * Create static inline function that calculates event size. | |
471 | */ | |
472 | ||
6db3d13b | 473 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ |
40652b65 | 474 | |
6db3d13b MD |
475 | /* Named field types must be defined in lttng-types.h */ |
476 | ||
d71e6471 MD |
477 | #undef __field_full |
478 | #define __field_full(_type, _item, _order, _base) \ | |
a90917c3 | 479 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
0d1d4002 | 480 | __event_len += sizeof(_type); |
6db3d13b | 481 | |
d71e6471 MD |
482 | #undef __array_enc_ext |
483 | #define __array_enc_ext(_type, _item, _length, _order, _base, _encoding) \ | |
a90917c3 | 484 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
0d1d4002 | 485 | __event_len += sizeof(_type) * (_length); |
6db3d13b | 486 | |
d71e6471 MD |
487 | #undef __dynamic_array_enc_ext |
488 | #define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding)\ | |
7ca580f8 | 489 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(u32)); \ |
85a80742 | 490 | __event_len += sizeof(u32); \ |
a90917c3 | 491 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
41b59694 MD |
492 | __dynamic_len[__dynamic_len_idx] = (_length); \ |
493 | __event_len += sizeof(_type) * __dynamic_len[__dynamic_len_idx]; \ | |
494 | __dynamic_len_idx++; | |
6db3d13b | 495 | |
84da5206 MD |
496 | #undef __dynamic_array_enc_ext_2 |
497 | #define __dynamic_array_enc_ext_2(_type, _item, _length1, _length2, _order, _base, _encoding)\ | |
7ca580f8 | 498 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(u32)); \ |
84da5206 MD |
499 | __event_len += sizeof(u32); \ |
500 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ | |
501 | __dynamic_len[__dynamic_len_idx] = (_length1); \ | |
502 | __event_len += sizeof(_type) * __dynamic_len[__dynamic_len_idx]; \ | |
503 | __dynamic_len_idx++; \ | |
504 | __dynamic_len[__dynamic_len_idx] = (_length2); \ | |
505 | __event_len += sizeof(_type) * __dynamic_len[__dynamic_len_idx]; \ | |
506 | __dynamic_len_idx++; | |
507 | ||
6db3d13b | 508 | #undef __string |
85a80742 | 509 | #define __string(_item, _src) \ |
54f9f68d MD |
510 | __event_len += __dynamic_len[__dynamic_len_idx++] = \ |
511 | strlen((_src) ? (_src) : __LTTNG_NULL_STRING) + 1; | |
0d1d4002 | 512 | |
d0255731 | 513 | /* |
786b8312 MD |
514 | * strlen_user includes \0. If returns 0, it faulted, so we set size to |
515 | * 1 (\0 only). | |
d0255731 | 516 | */ |
c6e3f225 MD |
517 | #undef __string_from_user |
518 | #define __string_from_user(_item, _src) \ | |
786b8312 | 519 | __event_len += __dynamic_len[__dynamic_len_idx++] = \ |
7b8ea3a5 | 520 | max_t(size_t, lttng_strlen_user_inatomic(_src), 1); |
c6e3f225 | 521 | |
0d1d4002 MD |
522 | #undef TP_PROTO |
523 | #define TP_PROTO(args...) args | |
6db3d13b MD |
524 | |
525 | #undef TP_STRUCT__entry | |
0d1d4002 | 526 | #define TP_STRUCT__entry(args...) args |
6db3d13b | 527 | |
7ca580f8 MD |
528 | #undef TP_locvar |
529 | #define TP_locvar(...) __VA_ARGS__ | |
530 | ||
3bc29f0a MD |
531 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
532 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code, _tstruct, _assign, _print) \ | |
7ca580f8 MD |
533 | static inline size_t __event_get_size__##_name(size_t *__dynamic_len, \ |
534 | void *__tp_locvar, _proto) \ | |
0d1d4002 MD |
535 | { \ |
536 | size_t __event_len = 0; \ | |
d3de7f14 | 537 | unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \ |
7ca580f8 | 538 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
d3de7f14 MD |
539 | \ |
540 | _tstruct \ | |
541 | return __event_len; \ | |
542 | } | |
543 | ||
3bc29f0a MD |
544 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
545 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print) \ | |
7ca580f8 MD |
546 | static inline size_t __event_get_size__##_name(size_t *__dynamic_len, \ |
547 | void *__tp_locvar) \ | |
d3de7f14 MD |
548 | { \ |
549 | size_t __event_len = 0; \ | |
550 | unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \ | |
7ca580f8 | 551 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
0d1d4002 | 552 | \ |
0d1d4002 MD |
553 | _tstruct \ |
554 | return __event_len; \ | |
6db3d13b | 555 | } |
40652b65 MD |
556 | |
557 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
558 | ||
559 | /* | |
c099397a | 560 | * Stage 7 of the trace events. |
e763dbf5 MD |
561 | * |
562 | * Create static inline function that calculates event payload alignment. | |
563 | */ | |
564 | ||
565 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
566 | ||
567 | /* Named field types must be defined in lttng-types.h */ | |
568 | ||
d71e6471 MD |
569 | #undef __field_full |
570 | #define __field_full(_type, _item, _order, _base) \ | |
a90917c3 | 571 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); |
e763dbf5 | 572 | |
d71e6471 MD |
573 | #undef __array_enc_ext |
574 | #define __array_enc_ext(_type, _item, _length, _order, _base, _encoding) \ | |
a90917c3 | 575 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); |
e763dbf5 | 576 | |
d71e6471 MD |
577 | #undef __dynamic_array_enc_ext |
578 | #define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding)\ | |
7ca580f8 | 579 | __event_align = max_t(size_t, __event_align, lttng_alignof(u32)); \ |
a90917c3 | 580 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); |
e763dbf5 | 581 | |
84da5206 MD |
582 | #undef __dynamic_array_enc_ext_2 |
583 | #define __dynamic_array_enc_ext_2(_type, _item, _length1, _length2, _order, _base, _encoding)\ | |
584 | __dynamic_array_enc_ext(_type, _item, _length1 + _length2, _order, _base, _encoding) | |
585 | ||
e763dbf5 MD |
586 | #undef __string |
587 | #define __string(_item, _src) | |
588 | ||
c6e3f225 MD |
589 | #undef __string_from_user |
590 | #define __string_from_user(_item, _src) | |
591 | ||
e763dbf5 MD |
592 | #undef TP_PROTO |
593 | #define TP_PROTO(args...) args | |
594 | ||
595 | #undef TP_STRUCT__entry | |
596 | #define TP_STRUCT__entry(args...) args | |
597 | ||
7ca580f8 MD |
598 | #undef TP_locvar |
599 | #define TP_locvar(...) __VA_ARGS__ | |
600 | ||
3bc29f0a MD |
601 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
602 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code, _tstruct, _assign, _print) \ | |
603 | static inline size_t __event_get_align__##_name(void *__tp_locvar, _proto) \ | |
e763dbf5 MD |
604 | { \ |
605 | size_t __event_align = 1; \ | |
7ca580f8 MD |
606 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
607 | \ | |
e763dbf5 MD |
608 | _tstruct \ |
609 | return __event_align; \ | |
610 | } | |
611 | ||
3bc29f0a MD |
612 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
613 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print) \ | |
7ca580f8 | 614 | static inline size_t __event_get_align__##_name(void *__tp_locvar) \ |
d3de7f14 MD |
615 | { \ |
616 | size_t __event_align = 1; \ | |
7ca580f8 MD |
617 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
618 | \ | |
d3de7f14 MD |
619 | _tstruct \ |
620 | return __event_align; \ | |
621 | } | |
622 | ||
e763dbf5 MD |
623 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
624 | ||
e763dbf5 | 625 | /* |
c099397a | 626 | * Stage 8 of the trace events. |
40652b65 | 627 | * |
3c4ffab9 MD |
628 | * Create structure declaration that allows the "assign" macros to access the |
629 | * field types. | |
630 | */ | |
631 | ||
632 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
633 | ||
634 | /* Named field types must be defined in lttng-types.h */ | |
635 | ||
d71e6471 MD |
636 | #undef __field_full |
637 | #define __field_full(_type, _item, _order, _base) _type _item; | |
3c4ffab9 | 638 | |
d71e6471 MD |
639 | #undef __array_enc_ext |
640 | #define __array_enc_ext(_type, _item, _length, _order, _base, _encoding) \ | |
641 | _type _item; | |
64c796d8 | 642 | |
d71e6471 MD |
643 | #undef __dynamic_array_enc_ext |
644 | #define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding)\ | |
645 | _type _item; | |
64c796d8 | 646 | |
84da5206 MD |
647 | #undef __dynamic_array_enc_ext_2 |
648 | #define __dynamic_array_enc_ext_2(_type, _item, _length1, _length2, _order, _base, _encoding)\ | |
649 | __dynamic_array_enc_ext(_type, _item, _length1 + _length2, _order, _base, _encoding) | |
650 | ||
3c4ffab9 | 651 | #undef __string |
c6e3f225 MD |
652 | #define __string(_item, _src) char _item; |
653 | ||
654 | #undef __string_from_user | |
655 | #define __string_from_user(_item, _src) \ | |
656 | __string(_item, _src) | |
3c4ffab9 MD |
657 | |
658 | #undef TP_STRUCT__entry | |
659 | #define TP_STRUCT__entry(args...) args | |
660 | ||
3bc29f0a MD |
661 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
662 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print) \ | |
3c4ffab9 MD |
663 | struct __event_typemap__##_name { \ |
664 | _tstruct \ | |
665 | }; | |
666 | ||
3bc29f0a MD |
667 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
668 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code, _tstruct, _assign, _print) \ | |
669 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print) | |
d3de7f14 | 670 | |
3c4ffab9 MD |
671 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
672 | ||
673 | ||
674 | /* | |
c099397a | 675 | * Stage 9 of the trace events. |
3c4ffab9 | 676 | * |
40652b65 MD |
677 | * Create the probe function : call even size calculation and write event data |
678 | * into the buffer. | |
e763dbf5 | 679 | * |
67e5e60c MD |
680 | * We use both the field and assignment macros to write the fields in the order |
681 | * defined in the field declaration. The field declarations control the | |
682 | * execution order, jumping to the appropriate assignment block. | |
40652b65 MD |
683 | */ |
684 | ||
e763dbf5 MD |
685 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ |
686 | ||
d71e6471 MD |
687 | #undef __field_full |
688 | #define __field_full(_type, _item, _order, _base) \ | |
e763dbf5 MD |
689 | goto __assign_##_item; \ |
690 | __end_field_##_item: | |
40652b65 | 691 | |
d71e6471 MD |
692 | #undef __array_enc_ext |
693 | #define __array_enc_ext(_type, _item, _length, _order, _base, _encoding)\ | |
e763dbf5 MD |
694 | goto __assign_##_item; \ |
695 | __end_field_##_item: | |
40652b65 | 696 | |
d71e6471 MD |
697 | #undef __dynamic_array_enc_ext |
698 | #define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding)\ | |
e763dbf5 MD |
699 | goto __assign_##_item##_1; \ |
700 | __end_field_##_item##_1: \ | |
e763dbf5 MD |
701 | goto __assign_##_item##_2; \ |
702 | __end_field_##_item##_2: | |
40652b65 | 703 | |
84da5206 MD |
704 | #undef __dynamic_array_enc_ext_2 |
705 | #define __dynamic_array_enc_ext_2(_type, _item, _length1, _length2, _order, _base, _encoding)\ | |
706 | goto __assign_##_item##_1; \ | |
707 | __end_field_##_item##_1: \ | |
708 | goto __assign_##_item##_2; \ | |
709 | __end_field_##_item##_2: \ | |
710 | goto __assign_##_item##_3; \ | |
711 | __end_field_##_item##_3: | |
712 | ||
e763dbf5 MD |
713 | #undef __string |
714 | #define __string(_item, _src) \ | |
715 | goto __assign_##_item; \ | |
716 | __end_field_##_item: | |
717 | ||
c6e3f225 MD |
718 | #undef __string_from_user |
719 | #define __string_from_user(_item, _src) \ | |
720 | __string(_item, _src) | |
721 | ||
e763dbf5 MD |
722 | /* |
723 | * Macros mapping tp_assign() to "=", tp_memcpy() to memcpy() and tp_strcpy() to | |
724 | * strcpy(). | |
725 | */ | |
726 | #undef tp_assign | |
727 | #define tp_assign(dest, src) \ | |
728 | __assign_##dest: \ | |
729 | { \ | |
3c4ffab9 | 730 | __typeof__(__typemap.dest) __tmp = (src); \ |
a90917c3 | 731 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp)); \ |
aaa4004a | 732 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ |
e763dbf5 MD |
733 | } \ |
734 | goto __end_field_##dest; | |
735 | ||
d9a7cf03 FG |
736 | /* fixed length array memcpy */ |
737 | #undef tp_memcpy_gen | |
738 | #define tp_memcpy_gen(write_ops, dest, src, len) \ | |
e763dbf5 | 739 | __assign_##dest: \ |
d793d5e1 MD |
740 | if (0) \ |
741 | (void) __typemap.dest; \ | |
a90917c3 | 742 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__typemap.dest)); \ |
d9a7cf03 | 743 | __chan->ops->write_ops(&__ctx, src, len); \ |
e763dbf5 MD |
744 | goto __end_field_##dest; |
745 | ||
d9a7cf03 FG |
746 | #undef tp_memcpy |
747 | #define tp_memcpy(dest, src, len) \ | |
748 | tp_memcpy_gen(event_write, dest, src, len) | |
749 | ||
750 | #undef tp_memcpy_from_user | |
751 | #define tp_memcpy_from_user(dest, src, len) \ | |
752 | tp_memcpy_gen(event_write_from_user, dest, src, len) | |
753 | ||
754 | /* variable length sequence memcpy */ | |
755 | #undef tp_memcpy_dyn_gen | |
756 | #define tp_memcpy_dyn_gen(write_ops, dest, src) \ | |
e763dbf5 MD |
757 | __assign_##dest##_1: \ |
758 | { \ | |
41b59694 | 759 | u32 __tmpl = __dynamic_len[__dynamic_len_idx]; \ |
a90917c3 | 760 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(u32)); \ |
aaa4004a | 761 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(u32)); \ |
e763dbf5 MD |
762 | } \ |
763 | goto __end_field_##dest##_1; \ | |
764 | __assign_##dest##_2: \ | |
a90917c3 | 765 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__typemap.dest)); \ |
d9a7cf03 | 766 | __chan->ops->write_ops(&__ctx, src, \ |
41b59694 | 767 | sizeof(__typemap.dest) * __get_dynamic_array_len(dest));\ |
e763dbf5 | 768 | goto __end_field_##dest##_2; |
58aa5d24 | 769 | |
84da5206 MD |
770 | #undef tp_memcpy_dyn_gen_2 |
771 | #define tp_memcpy_dyn_gen_2(write_ops, dest, src1, src2) \ | |
772 | __assign_##dest##_1: \ | |
773 | { \ | |
774 | u32 __tmpl = __dynamic_len[__dynamic_len_idx] \ | |
775 | + __dynamic_len[__dynamic_len_idx + 1]; \ | |
776 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(u32)); \ | |
777 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(u32)); \ | |
778 | } \ | |
779 | goto __end_field_##dest##_1; \ | |
780 | __assign_##dest##_2: \ | |
781 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__typemap.dest)); \ | |
782 | __chan->ops->write_ops(&__ctx, src1, \ | |
783 | sizeof(__typemap.dest) * __get_dynamic_array_len(dest));\ | |
784 | goto __end_field_##dest##_2; \ | |
785 | __assign_##dest##_3: \ | |
786 | __chan->ops->write_ops(&__ctx, src2, \ | |
787 | sizeof(__typemap.dest) * __get_dynamic_array_len(dest));\ | |
788 | goto __end_field_##dest##_3; | |
789 | ||
d9a7cf03 FG |
790 | #undef tp_memcpy_dyn |
791 | #define tp_memcpy_dyn(dest, src) \ | |
792 | tp_memcpy_dyn_gen(event_write, dest, src) | |
793 | ||
84da5206 MD |
794 | #undef tp_memcpy_dyn_2 |
795 | #define tp_memcpy_dyn_2(dest, src1, src2) \ | |
796 | tp_memcpy_dyn_gen_2(event_write, dest, src1, src2) | |
797 | ||
d9a7cf03 FG |
798 | #undef tp_memcpy_dyn_from_user |
799 | #define tp_memcpy_dyn_from_user(dest, src) \ | |
800 | tp_memcpy_dyn_gen(event_write_from_user, dest, src) | |
58aa5d24 | 801 | |
d0255731 | 802 | /* |
786b8312 | 803 | * The string length including the final \0. |
d0255731 | 804 | */ |
4ea00e4f | 805 | #undef tp_copy_string_from_user |
58aa5d24 | 806 | #define tp_copy_string_from_user(dest, src) \ |
16f78f3a MD |
807 | __assign_##dest: \ |
808 | if (0) \ | |
809 | (void) __typemap.dest; \ | |
810 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__typemap.dest)); \ | |
811 | __chan->ops->event_strcpy_from_user(&__ctx, src, \ | |
812 | __get_dynamic_array_len(dest)); \ | |
4ea00e4f | 813 | goto __end_field_##dest; |
16f78f3a | 814 | |
e763dbf5 MD |
815 | #undef tp_strcpy |
816 | #define tp_strcpy(dest, src) \ | |
16f78f3a MD |
817 | __assign_##dest: \ |
818 | if (0) \ | |
819 | (void) __typemap.dest; \ | |
54f9f68d MD |
820 | { \ |
821 | const char *__ctf_tmp_string = \ | |
822 | ((src) ? (src) : __LTTNG_NULL_STRING); \ | |
823 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__typemap.dest)); \ | |
824 | __chan->ops->event_strcpy(&__ctx, __ctf_tmp_string, __get_dynamic_array_len(dest)); \ | |
825 | } \ | |
16f78f3a | 826 | goto __end_field_##dest; |
40652b65 | 827 | |
e763dbf5 MD |
828 | /* Named field types must be defined in lttng-types.h */ |
829 | ||
830 | #undef __get_str | |
831 | #define __get_str(field) field | |
832 | ||
833 | #undef __get_dynamic_array | |
834 | #define __get_dynamic_array(field) field | |
835 | ||
836 | /* Beware: this get len actually consumes the len value */ | |
837 | #undef __get_dynamic_array_len | |
838 | #define __get_dynamic_array_len(field) __dynamic_len[__dynamic_len_idx++] | |
839 | ||
840 | #undef TP_PROTO | |
841 | #define TP_PROTO(args...) args | |
842 | ||
843 | #undef TP_ARGS | |
844 | #define TP_ARGS(args...) args | |
845 | ||
846 | #undef TP_STRUCT__entry | |
847 | #define TP_STRUCT__entry(args...) args | |
848 | ||
849 | #undef TP_fast_assign | |
850 | #define TP_fast_assign(args...) args | |
851 | ||
7ca580f8 MD |
852 | #undef TP_locvar |
853 | #define TP_locvar(...) __VA_ARGS__ | |
854 | ||
855 | #undef TP_code | |
856 | #define TP_code(...) __VA_ARGS__ | |
857 | ||
c337ddc2 MD |
858 | /* |
859 | * For state dump, check that "session" argument (mandatory) matches the | |
860 | * session this event belongs to. Ensures that we write state dump data only | |
861 | * into the started session, not into all sessions. | |
862 | */ | |
863 | #ifdef TP_SESSION_CHECK | |
864 | #define _TP_SESSION_CHECK(session, csession) (session == csession) | |
865 | #else /* TP_SESSION_CHECK */ | |
866 | #define _TP_SESSION_CHECK(session, csession) 1 | |
867 | #endif /* TP_SESSION_CHECK */ | |
868 | ||
f9771d39 MD |
869 | /* |
870 | * __dynamic_len array length is twice the number of fields due to | |
871 | * __dynamic_array_enc_ext_2() and tp_memcpy_dyn_2(), which are the | |
872 | * worse case, needing 2 entries per field. | |
873 | */ | |
3bc29f0a MD |
874 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
875 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code, _tstruct, _assign, _print) \ | |
e763dbf5 MD |
876 | static void __event_probe__##_name(void *__data, _proto) \ |
877 | { \ | |
7ca580f8 | 878 | struct probe_local_vars { _locvar }; \ |
a90917c3 MD |
879 | struct lttng_event *__event = __data; \ |
880 | struct lttng_channel *__chan = __event->chan; \ | |
aaa4004a | 881 | struct lib_ring_buffer_ctx __ctx; \ |
e763dbf5 | 882 | size_t __event_len, __event_align; \ |
d3de7f14 MD |
883 | size_t __dynamic_len_idx __attribute__((unused)) = 0; \ |
884 | size_t __dynamic_len[2 * ARRAY_SIZE(__event_fields___##_name)] __attribute__((unused)); \ | |
885 | struct __event_typemap__##_name __typemap __attribute__((unused)); \ | |
e763dbf5 | 886 | int __ret; \ |
7ca580f8 MD |
887 | struct probe_local_vars __tp_locvar; \ |
888 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
889 | &__tp_locvar; \ | |
e763dbf5 | 890 | \ |
c337ddc2 MD |
891 | if (!_TP_SESSION_CHECK(session, __chan->session)) \ |
892 | return; \ | |
e64957da MD |
893 | if (unlikely(!ACCESS_ONCE(__chan->session->active))) \ |
894 | return; \ | |
895 | if (unlikely(!ACCESS_ONCE(__chan->enabled))) \ | |
896 | return; \ | |
897 | if (unlikely(!ACCESS_ONCE(__event->enabled))) \ | |
52fc2e1f | 898 | return; \ |
7ca580f8 MD |
899 | _code \ |
900 | __event_len = __event_get_size__##_name(__dynamic_len, tp_locvar, \ | |
901 | _args); \ | |
902 | __event_align = __event_get_align__##_name(tp_locvar, _args); \ | |
aaa4004a | 903 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, __event, __event_len, \ |
e763dbf5 | 904 | __event_align, -1); \ |
aaa4004a | 905 | __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ |
e763dbf5 MD |
906 | if (__ret < 0) \ |
907 | return; \ | |
908 | /* Control code (field ordering) */ \ | |
909 | _tstruct \ | |
aaa4004a | 910 | __chan->ops->event_commit(&__ctx); \ |
e763dbf5 MD |
911 | return; \ |
912 | /* Copy code, steered by control code */ \ | |
913 | _assign \ | |
914 | } | |
915 | ||
3bc29f0a MD |
916 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
917 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print) \ | |
f7bdf4db MD |
918 | static void __event_probe__##_name(void *__data) \ |
919 | { \ | |
7ca580f8 | 920 | struct probe_local_vars { _locvar }; \ |
a90917c3 MD |
921 | struct lttng_event *__event = __data; \ |
922 | struct lttng_channel *__chan = __event->chan; \ | |
f7bdf4db MD |
923 | struct lib_ring_buffer_ctx __ctx; \ |
924 | size_t __event_len, __event_align; \ | |
d3de7f14 MD |
925 | size_t __dynamic_len_idx __attribute__((unused)) = 0; \ |
926 | size_t __dynamic_len[2 * ARRAY_SIZE(__event_fields___##_name)] __attribute__((unused)); \ | |
927 | struct __event_typemap__##_name __typemap __attribute__((unused)); \ | |
f7bdf4db | 928 | int __ret; \ |
7ca580f8 MD |
929 | struct probe_local_vars __tp_locvar; \ |
930 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
931 | &__tp_locvar; \ | |
f7bdf4db | 932 | \ |
c337ddc2 MD |
933 | if (!_TP_SESSION_CHECK(session, __chan->session)) \ |
934 | return; \ | |
f7bdf4db MD |
935 | if (unlikely(!ACCESS_ONCE(__chan->session->active))) \ |
936 | return; \ | |
937 | if (unlikely(!ACCESS_ONCE(__chan->enabled))) \ | |
938 | return; \ | |
939 | if (unlikely(!ACCESS_ONCE(__event->enabled))) \ | |
940 | return; \ | |
7ca580f8 MD |
941 | _code \ |
942 | __event_len = __event_get_size__##_name(__dynamic_len, tp_locvar); \ | |
943 | __event_align = __event_get_align__##_name(tp_locvar); \ | |
f7bdf4db MD |
944 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, __event, __event_len, \ |
945 | __event_align, -1); \ | |
946 | __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ | |
947 | if (__ret < 0) \ | |
948 | return; \ | |
949 | /* Control code (field ordering) */ \ | |
950 | _tstruct \ | |
951 | __chan->ops->event_commit(&__ctx); \ | |
952 | return; \ | |
953 | /* Copy code, steered by control code */ \ | |
954 | _assign \ | |
955 | } | |
956 | ||
e763dbf5 MD |
957 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
958 | ||
3afe7aac | 959 | /* |
c099397a | 960 | * Stage 10 of the trace events. |
3afe7aac MD |
961 | * |
962 | * Register/unregister probes at module load/unload. | |
963 | */ | |
964 | ||
965 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
966 | ||
967 | #define TP_ID1(_token, _system) _token##_system | |
968 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
969 | #define module_init_eval1(_token, _system) module_init(_token##_system) | |
970 | #define module_init_eval(_token, _system) module_init_eval1(_token, _system) | |
971 | #define module_exit_eval1(_token, _system) module_exit(_token##_system) | |
972 | #define module_exit_eval(_token, _system) module_exit_eval1(_token, _system) | |
973 | ||
2655f9ad | 974 | #ifndef TP_MODULE_NOINIT |
3afe7aac MD |
975 | static int TP_ID(__lttng_events_init__, TRACE_SYSTEM)(void) |
976 | { | |
6d2a620c | 977 | wrapper_vmalloc_sync_all(); |
a90917c3 | 978 | return lttng_probe_register(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
979 | } |
980 | ||
3afe7aac MD |
981 | static void TP_ID(__lttng_events_exit__, TRACE_SYSTEM)(void) |
982 | { | |
a90917c3 | 983 | lttng_probe_unregister(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
984 | } |
985 | ||
2655f9ad MD |
986 | #ifndef TP_MODULE_NOAUTOLOAD |
987 | module_init_eval(__lttng_events_init__, TRACE_SYSTEM); | |
3afe7aac | 988 | module_exit_eval(__lttng_events_exit__, TRACE_SYSTEM); |
259b6cb3 | 989 | #endif |
3afe7aac | 990 | |
2655f9ad MD |
991 | #endif |
992 | ||
3afe7aac MD |
993 | #undef module_init_eval |
994 | #undef module_exit_eval | |
995 | #undef TP_ID1 | |
996 | #undef TP_ID | |
177b3692 MD |
997 | |
998 | #undef TP_PROTO | |
999 | #undef TP_ARGS |