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