Commit | Line | Data |
---|---|---|
17baffe2 | 1 | /* |
451e462f | 2 | * lttng-tracepoint-event-impl.h |
17baffe2 MD |
3 | * |
4 | * Copyright (C) 2009 Steven Rostedt <rostedt@goodmis.org> | |
f127e61e | 5 | * Copyright (C) 2009-2014 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 | */ |
f127e61e | 21 | |
d28686c1 | 22 | #include <linux/uaccess.h> |
d0dd2ecb | 23 | #include <linux/debugfs.h> |
f127e61e | 24 | #include <linux/rculist.h> |
43803cf2 | 25 | #include <asm/byteorder.h> |
bf1a9179 | 26 | #include <linux/swab.h> |
8d43abb7 MD |
27 | |
28 | #include <probes/lttng.h> | |
29 | #include <probes/lttng-types.h> | |
30 | #include <probes/lttng-probe-user.h> | |
31 | #include <wrapper/vmalloc.h> /* for wrapper_vmalloc_sync_all() */ | |
32 | #include <wrapper/ringbuffer/frontend_types.h> | |
3c8ebbc8 | 33 | #include <wrapper/ringbuffer/backend.h> |
8d43abb7 MD |
34 | #include <wrapper/rcu.h> |
35 | #include <lttng-events.h> | |
36 | #include <lttng-tracer-core.h> | |
40652b65 | 37 | |
1d84e8e7 MD |
38 | #define __LTTNG_NULL_STRING "(null)" |
39 | ||
40652b65 | 40 | /* |
6db3d13b | 41 | * Macro declarations used for all stages. |
40652b65 MD |
42 | */ |
43 | ||
76e4f017 MD |
44 | /* |
45 | * LTTng name mapping macros. LTTng remaps some of the kernel events to | |
46 | * enforce name-spacing. | |
47 | */ | |
3bc29f0a | 48 | #undef LTTNG_TRACEPOINT_EVENT_MAP |
f127e61e | 49 | #define LTTNG_TRACEPOINT_EVENT_MAP(name, map, proto, args, fields) \ |
3bc29f0a | 50 | LTTNG_TRACEPOINT_EVENT_CLASS(map, \ |
76e4f017 MD |
51 | PARAMS(proto), \ |
52 | PARAMS(args), \ | |
f127e61e | 53 | PARAMS(fields)) \ |
3bc29f0a | 54 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(map, name, map, PARAMS(proto), PARAMS(args)) |
76e4f017 | 55 | |
3bc29f0a | 56 | #undef LTTNG_TRACEPOINT_EVENT_MAP_NOARGS |
f127e61e | 57 | #define LTTNG_TRACEPOINT_EVENT_MAP_NOARGS(name, map, fields) \ |
3bc29f0a | 58 | LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(map, \ |
f127e61e | 59 | PARAMS(fields)) \ |
3bc29f0a | 60 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(map, name, map) |
76e4f017 | 61 | |
f127e61e | 62 | #undef LTTNG_TRACEPOINT_EVENT_CODE_MAP |
265822ae | 63 | #define LTTNG_TRACEPOINT_EVENT_CODE_MAP(name, map, proto, args, _locvar, _code_pre, fields, _code_post) \ |
f127e61e MD |
64 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE(map, \ |
65 | PARAMS(proto), \ | |
66 | PARAMS(args), \ | |
67 | PARAMS(_locvar), \ | |
265822ae MD |
68 | PARAMS(_code_pre), \ |
69 | PARAMS(fields), \ | |
70 | PARAMS(_code_post)) \ | |
f127e61e MD |
71 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(map, name, map, PARAMS(proto), PARAMS(args)) |
72 | ||
3bc29f0a | 73 | #undef LTTNG_TRACEPOINT_EVENT_CODE |
265822ae | 74 | #define LTTNG_TRACEPOINT_EVENT_CODE(name, proto, args, _locvar, _code_pre, fields, _code_post) \ |
f127e61e | 75 | LTTNG_TRACEPOINT_EVENT_CODE_MAP(name, name, \ |
7ca580f8 MD |
76 | PARAMS(proto), \ |
77 | PARAMS(args), \ | |
78 | PARAMS(_locvar), \ | |
265822ae MD |
79 | PARAMS(_code_pre), \ |
80 | PARAMS(fields), \ | |
81 | PARAMS(_code_post)) | |
fcf7fa33 | 82 | |
40652b65 | 83 | /* |
3bc29f0a MD |
84 | * LTTNG_TRACEPOINT_EVENT_CLASS can be used to add a generic function |
85 | * handlers for events. That is, if all events have the same parameters | |
86 | * and just have distinct trace points. Each tracepoint can be defined | |
87 | * with LTTNG_TRACEPOINT_EVENT_INSTANCE and that will map the | |
88 | * LTTNG_TRACEPOINT_EVENT_CLASS to the tracepoint. | |
40652b65 | 89 | * |
3bc29f0a MD |
90 | * LTTNG_TRACEPOINT_EVENT is a one to one mapping between tracepoint and |
91 | * template. | |
40652b65 | 92 | */ |
6db3d13b | 93 | |
3bc29f0a | 94 | #undef LTTNG_TRACEPOINT_EVENT |
f127e61e | 95 | #define LTTNG_TRACEPOINT_EVENT(name, proto, args, fields) \ |
3bc29f0a MD |
96 | LTTNG_TRACEPOINT_EVENT_MAP(name, name, \ |
97 | PARAMS(proto), \ | |
98 | PARAMS(args), \ | |
f127e61e | 99 | PARAMS(fields)) |
40652b65 | 100 | |
3bc29f0a | 101 | #undef LTTNG_TRACEPOINT_EVENT_NOARGS |
f127e61e MD |
102 | #define LTTNG_TRACEPOINT_EVENT_NOARGS(name, fields) \ |
103 | LTTNG_TRACEPOINT_EVENT_MAP_NOARGS(name, name, PARAMS(fields)) | |
76e4f017 | 104 | |
3bc29f0a MD |
105 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE |
106 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE(template, name, proto, args) \ | |
107 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(template, name, name, PARAMS(proto), PARAMS(args)) | |
76e4f017 | 108 | |
3bc29f0a MD |
109 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS |
110 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(template, name) \ | |
111 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(template, name, name) | |
76e4f017 | 112 | |
3bc29f0a | 113 | #undef LTTNG_TRACEPOINT_EVENT_CLASS |
f127e61e | 114 | #define LTTNG_TRACEPOINT_EVENT_CLASS(_name, _proto, _args, _fields) \ |
3bc29f0a | 115 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, PARAMS(_proto), PARAMS(_args), , , \ |
265822ae | 116 | PARAMS(_fields), ) |
7ca580f8 | 117 | |
3bc29f0a | 118 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS |
f127e61e | 119 | #define LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(_name, _fields) \ |
265822ae | 120 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, , , PARAMS(_fields), ) |
7ca580f8 MD |
121 | |
122 | ||
f62b389e | 123 | /* |
c099397a | 124 | * Stage 1 of the trace events. |
f62b389e MD |
125 | * |
126 | * Create dummy trace calls for each events, verifying that the LTTng module | |
3bc29f0a MD |
127 | * instrumentation headers match the kernel arguments. Will be optimized |
128 | * out by the compiler. | |
f62b389e MD |
129 | */ |
130 | ||
f127e61e | 131 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 | 132 | #include <probes/lttng-events-reset.h> |
f62b389e MD |
133 | |
134 | #undef TP_PROTO | |
f127e61e | 135 | #define TP_PROTO(...) __VA_ARGS__ |
f62b389e MD |
136 | |
137 | #undef TP_ARGS | |
f127e61e | 138 | #define TP_ARGS(...) __VA_ARGS__ |
f62b389e | 139 | |
3bc29f0a MD |
140 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP |
141 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
7eb827f2 | 142 | void trace_##_name(_proto); |
f62b389e | 143 | |
3bc29f0a MD |
144 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS |
145 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
cb1aa0c7 | 146 | void trace_##_name(void); |
f7bdf4db | 147 | |
f62b389e MD |
148 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
149 | ||
d0558de2 MD |
150 | /* |
151 | * Stage 1.1 of the trace events. | |
152 | * | |
153 | * Create dummy trace prototypes for each event class, and for each used | |
154 | * template. This will allow checking whether the prototypes from the | |
155 | * class and the instance using the class actually match. | |
156 | */ | |
157 | ||
ba012e22 | 158 | #include <probes/lttng-events-reset.h> /* Reset all macros within TRACE_EVENT */ |
d0558de2 MD |
159 | |
160 | #undef TP_PROTO | |
161 | #define TP_PROTO(...) __VA_ARGS__ | |
162 | ||
163 | #undef TP_ARGS | |
164 | #define TP_ARGS(...) __VA_ARGS__ | |
165 | ||
166 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
167 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
168 | void __event_template_proto___##_template(_proto); | |
169 | ||
170 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
171 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
172 | void __event_template_proto___##_template(void); | |
173 | ||
174 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE | |
265822ae | 175 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
d0558de2 MD |
176 | void __event_template_proto___##_name(_proto); |
177 | ||
178 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS | |
265822ae | 179 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
d0558de2 MD |
180 | void __event_template_proto___##_name(void); |
181 | ||
182 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
183 | ||
141ddf28 MD |
184 | /* |
185 | * Stage 1.2 of tracepoint event generation | |
186 | * | |
187 | * Unfolding the enums | |
188 | */ | |
189 | #include <probes/lttng-events-reset.h> /* Reset all macros within TRACE_EVENT */ | |
190 | ||
191 | /* Enumeration entry (single value) */ | |
192 | #undef ctf_enum_value | |
193 | #define ctf_enum_value(_string, _value) \ | |
194 | { \ | |
195 | .start = { \ | |
196 | .signedness = lttng_is_signed_type(__typeof__(_value)), \ | |
197 | .value = lttng_is_signed_type(__typeof__(_value)) ? \ | |
198 | (long long) (_value) : (_value), \ | |
199 | }, \ | |
200 | .end = { \ | |
201 | .signedness = lttng_is_signed_type(__typeof__(_value)), \ | |
202 | .value = lttng_is_signed_type(__typeof__(_value)) ? \ | |
203 | (long long) (_value) : (_value), \ | |
204 | }, \ | |
205 | .string = (_string), \ | |
206 | }, | |
207 | ||
208 | /* Enumeration entry (range) */ | |
209 | #undef ctf_enum_range | |
210 | #define ctf_enum_range(_string, _range_start, _range_end) \ | |
211 | { \ | |
212 | .start = { \ | |
213 | .signedness = lttng_is_signed_type(__typeof__(_range_start)), \ | |
214 | .value = lttng_is_signed_type(__typeof__(_range_start)) ? \ | |
215 | (long long) (_range_start) : (_range_start), \ | |
216 | }, \ | |
217 | .end = { \ | |
218 | .signedness = lttng_is_signed_type(__typeof__(_range_end)), \ | |
219 | .value = lttng_is_signed_type(__typeof__(_range_end)) ? \ | |
220 | (long long) (_range_end) : (_range_end), \ | |
221 | }, \ | |
222 | .string = (_string), \ | |
223 | }, | |
224 | ||
08ad1061 PP |
225 | /* Enumeration entry (automatic value; follows the rules of CTF) */ |
226 | #undef ctf_enum_auto | |
227 | #define ctf_enum_auto(_string) \ | |
228 | { \ | |
229 | .start = { \ | |
230 | .signedness = -1, \ | |
231 | .value = -1, \ | |
232 | }, \ | |
233 | .end = { \ | |
234 | .signedness = -1, \ | |
235 | .value = -1, \ | |
236 | }, \ | |
237 | .string = (_string), \ | |
238 | .options = { \ | |
239 | .is_auto = 1, \ | |
240 | } \ | |
241 | }, | |
242 | ||
141ddf28 MD |
243 | #undef TP_ENUM_VALUES |
244 | #define TP_ENUM_VALUES(...) \ | |
245 | __VA_ARGS__ | |
246 | ||
247 | #undef LTTNG_TRACEPOINT_ENUM | |
248 | #define LTTNG_TRACEPOINT_ENUM(_name, _values) \ | |
249 | const struct lttng_enum_entry __enum_values__##_name[] = { \ | |
250 | _values \ | |
251 | }; | |
252 | ||
253 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
254 | ||
6db3d13b | 255 | /* |
c099397a | 256 | * Stage 2 of the trace events. |
6db3d13b MD |
257 | * |
258 | * Create event field type metadata section. | |
259 | * Each event produce an array of fields. | |
260 | */ | |
261 | ||
f127e61e | 262 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 MD |
263 | #include <probes/lttng-events-reset.h> |
264 | #include <probes/lttng-events-write.h> | |
265 | #include <probes/lttng-events-nowrite.h> | |
6db3d13b | 266 | |
f127e61e MD |
267 | #undef _ctf_integer_ext |
268 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ | |
c099397a MD |
269 | { \ |
270 | .name = #_item, \ | |
43803cf2 | 271 | .type = __type_integer(_type, 0, 0, -1, _byte_order, _base, none),\ |
f127e61e MD |
272 | .nowrite = _nowrite, \ |
273 | .user = _user, \ | |
c099397a | 274 | }, |
40652b65 | 275 | |
f127e61e MD |
276 | #undef _ctf_array_encoded |
277 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _user, _nowrite) \ | |
299338c8 | 278 | { \ |
c099397a MD |
279 | .name = #_item, \ |
280 | .type = \ | |
281 | { \ | |
299338c8 | 282 | .atype = atype_array, \ |
f127e61e | 283 | .u = \ |
c099397a | 284 | { \ |
f127e61e MD |
285 | .array = \ |
286 | { \ | |
43803cf2 | 287 | .elem_type = __type_integer(_type, 0, 0, 0, __BYTE_ORDER, 10, _encoding), \ |
f127e61e MD |
288 | .length = _length, \ |
289 | } \ | |
290 | } \ | |
299338c8 | 291 | }, \ |
f127e61e MD |
292 | .nowrite = _nowrite, \ |
293 | .user = _user, \ | |
299338c8 | 294 | }, |
40652b65 | 295 | |
43803cf2 MD |
296 | #undef _ctf_array_bitfield |
297 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
298 | { \ | |
299 | .name = #_item, \ | |
300 | .type = \ | |
301 | { \ | |
302 | .atype = atype_array, \ | |
303 | .u = \ | |
304 | { \ | |
305 | .array = \ | |
306 | { \ | |
307 | .elem_type = __type_integer(_type, 1, 1, 0, __LITTLE_ENDIAN, 10, none), \ | |
308 | .length = (_length) * sizeof(_type) * CHAR_BIT, \ | |
309 | .elem_alignment = lttng_alignof(_type), \ | |
310 | } \ | |
311 | } \ | |
312 | }, \ | |
313 | .nowrite = _nowrite, \ | |
314 | .user = _user, \ | |
315 | }, | |
316 | ||
317 | ||
f127e61e MD |
318 | #undef _ctf_sequence_encoded |
319 | #define _ctf_sequence_encoded(_type, _item, _src, \ | |
320 | _length_type, _src_length, _encoding, \ | |
57ede728 | 321 | _byte_order, _base, _user, _nowrite) \ |
299338c8 | 322 | { \ |
c099397a MD |
323 | .name = #_item, \ |
324 | .type = \ | |
325 | { \ | |
299338c8 | 326 | .atype = atype_sequence, \ |
f127e61e | 327 | .u = \ |
c099397a | 328 | { \ |
f127e61e MD |
329 | .sequence = \ |
330 | { \ | |
43803cf2 MD |
331 | .length_type = __type_integer(_length_type, 0, 0, 0, __BYTE_ORDER, 10, none), \ |
332 | .elem_type = __type_integer(_type, 0, 0, -1, _byte_order, _base, _encoding), \ | |
333 | }, \ | |
334 | }, \ | |
335 | }, \ | |
336 | .nowrite = _nowrite, \ | |
337 | .user = _user, \ | |
338 | }, | |
339 | ||
340 | #undef _ctf_sequence_bitfield | |
341 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
342 | _length_type, _src_length, \ | |
343 | _user, _nowrite) \ | |
344 | { \ | |
345 | .name = #_item, \ | |
346 | .type = \ | |
347 | { \ | |
348 | .atype = atype_sequence, \ | |
349 | .u = \ | |
350 | { \ | |
351 | .sequence = \ | |
352 | { \ | |
353 | .length_type = __type_integer(_length_type, 0, 0, 0, __BYTE_ORDER, 10, none), \ | |
354 | .elem_type = __type_integer(_type, 1, 1, 0, __LITTLE_ENDIAN, 10, none), \ | |
355 | .elem_alignment = lttng_alignof(_type), \ | |
f127e61e | 356 | }, \ |
c099397a | 357 | }, \ |
299338c8 | 358 | }, \ |
f127e61e MD |
359 | .nowrite = _nowrite, \ |
360 | .user = _user, \ | |
299338c8 | 361 | }, |
40652b65 | 362 | |
f127e61e MD |
363 | #undef _ctf_string |
364 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
299338c8 | 365 | { \ |
c099397a MD |
366 | .name = #_item, \ |
367 | .type = \ | |
368 | { \ | |
299338c8 | 369 | .atype = atype_string, \ |
f127e61e MD |
370 | .u = \ |
371 | { \ | |
372 | .basic = { .string = { .encoding = lttng_encode_UTF8 } } \ | |
373 | }, \ | |
299338c8 | 374 | }, \ |
f127e61e MD |
375 | .nowrite = _nowrite, \ |
376 | .user = _user, \ | |
299338c8 | 377 | }, |
1d12cebd | 378 | |
141ddf28 MD |
379 | #undef _ctf_enum |
380 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
381 | { \ | |
382 | .name = #_item, \ | |
383 | .type = { \ | |
384 | .atype = atype_enum, \ | |
385 | .u = { \ | |
386 | .basic = { \ | |
387 | .enumeration = { \ | |
388 | .desc = &__enum_##_name, \ | |
389 | .container_type = { \ | |
390 | .size = sizeof(_type) * CHAR_BIT, \ | |
391 | .alignment = lttng_alignof(_type) * CHAR_BIT, \ | |
392 | .signedness = lttng_is_signed_type(_type), \ | |
393 | .reverse_byte_order = 0, \ | |
394 | .base = 10, \ | |
395 | .encoding = lttng_encode_none, \ | |
396 | }, \ | |
397 | }, \ | |
398 | }, \ | |
399 | }, \ | |
400 | }, \ | |
401 | .nowrite = _nowrite, \ | |
402 | .user = _user, \ | |
403 | }, | |
f64dd4be MD |
404 | |
405 | #undef ctf_custom_field | |
406 | #define ctf_custom_field(_type, _item, _code) \ | |
407 | { \ | |
408 | .name = #_item, \ | |
409 | .type = { _type }, \ | |
410 | .nowrite = 0, \ | |
411 | .user = 0, \ | |
412 | }, | |
413 | ||
414 | #undef ctf_custom_type | |
415 | #define ctf_custom_type(...) __VA_ARGS__ | |
416 | ||
f127e61e MD |
417 | #undef TP_FIELDS |
418 | #define TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */ | |
1d12cebd | 419 | |
3bc29f0a | 420 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 421 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
0d1d4002 | 422 | static const struct lttng_event_field __event_fields___##_name[] = { \ |
f127e61e | 423 | _fields \ |
299338c8 MD |
424 | }; |
425 | ||
3bc29f0a | 426 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae MD |
427 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
428 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, PARAMS(_fields), _code_post) | |
f7bdf4db | 429 | |
141ddf28 MD |
430 | #undef LTTNG_TRACEPOINT_ENUM |
431 | #define LTTNG_TRACEPOINT_ENUM(_name, _values) \ | |
432 | static const struct lttng_enum_desc __enum_##_name = { \ | |
433 | .name = #_name, \ | |
434 | .entries = __enum_values__##_name, \ | |
435 | .nr_entries = ARRAY_SIZE(__enum_values__##_name), \ | |
436 | }; | |
437 | ||
299338c8 MD |
438 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
439 | ||
19c57fbf | 440 | /* |
c099397a | 441 | * Stage 3 of the trace events. |
19c57fbf MD |
442 | * |
443 | * Create probe callback prototypes. | |
444 | */ | |
445 | ||
f127e61e | 446 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 | 447 | #include <probes/lttng-events-reset.h> |
19c57fbf MD |
448 | |
449 | #undef TP_PROTO | |
f127e61e | 450 | #define TP_PROTO(...) __VA_ARGS__ |
19c57fbf | 451 | |
3bc29f0a | 452 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 453 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
19c57fbf MD |
454 | static void __event_probe__##_name(void *__data, _proto); |
455 | ||
3bc29f0a | 456 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 457 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f7bdf4db MD |
458 | static void __event_probe__##_name(void *__data); |
459 | ||
19c57fbf MD |
460 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
461 | ||
f7bdf4db MD |
462 | /* |
463 | * Stage 4 of the trace events. | |
464 | * | |
40652b65 MD |
465 | * Create static inline function that calculates event size. |
466 | */ | |
467 | ||
f127e61e | 468 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 MD |
469 | #include <probes/lttng-events-reset.h> |
470 | #include <probes/lttng-events-write.h> | |
6db3d13b | 471 | |
f127e61e MD |
472 | #undef _ctf_integer_ext |
473 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ | |
a90917c3 | 474 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
0d1d4002 | 475 | __event_len += sizeof(_type); |
6db3d13b | 476 | |
f127e61e MD |
477 | #undef _ctf_array_encoded |
478 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _user, _nowrite) \ | |
a90917c3 | 479 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
0d1d4002 | 480 | __event_len += sizeof(_type) * (_length); |
6db3d13b | 481 | |
43803cf2 MD |
482 | #undef _ctf_array_bitfield |
483 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
484 | _ctf_array_encoded(_type, _item, _src, _length, none, _user, _nowrite) | |
485 | ||
f127e61e MD |
486 | #undef _ctf_sequence_encoded |
487 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 488 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
489 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_length_type)); \ |
490 | __event_len += sizeof(_length_type); \ | |
a90917c3 | 491 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
114667d5 MD |
492 | { \ |
493 | size_t __seqlen = (_src_length); \ | |
494 | \ | |
495 | if (unlikely(++this_cpu_ptr(<tng_dynamic_len_stack)->offset >= LTTNG_DYNAMIC_LEN_STACK_SIZE)) \ | |
496 | goto error; \ | |
497 | barrier(); /* reserve before use. */ \ | |
498 | this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = __seqlen; \ | |
499 | __event_len += sizeof(_type) * __seqlen; \ | |
500 | } | |
6db3d13b | 501 | |
43803cf2 MD |
502 | #undef _ctf_sequence_bitfield |
503 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
504 | _length_type, _src_length, \ | |
505 | _user, _nowrite) \ | |
506 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
507 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
508 | ||
d0255731 | 509 | /* |
f127e61e | 510 | * ctf_user_string includes \0. If returns 0, it faulted, so we set size to |
786b8312 | 511 | * 1 (\0 only). |
d0255731 | 512 | */ |
f127e61e MD |
513 | #undef _ctf_string |
514 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
114667d5 MD |
515 | if (unlikely(++this_cpu_ptr(<tng_dynamic_len_stack)->offset >= LTTNG_DYNAMIC_LEN_STACK_SIZE)) \ |
516 | goto error; \ | |
517 | barrier(); /* reserve before use. */ \ | |
518 | if (_user) { \ | |
519 | __event_len += this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = \ | |
96d0248a | 520 | max_t(size_t, lttng_strlen_user_inatomic(_src), 1); \ |
114667d5 MD |
521 | } else { \ |
522 | __event_len += this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = \ | |
1d84e8e7 | 523 | strlen((_src) ? (_src) : __LTTNG_NULL_STRING) + 1; \ |
114667d5 | 524 | } |
c6e3f225 | 525 | |
141ddf28 MD |
526 | #undef _ctf_enum |
527 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
528 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
529 | ||
f64dd4be MD |
530 | #undef ctf_align |
531 | #define ctf_align(_type) \ | |
532 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); | |
533 | ||
534 | #undef ctf_custom_field | |
535 | #define ctf_custom_field(_type, _item, _code) \ | |
536 | { \ | |
537 | _code \ | |
538 | } | |
539 | ||
540 | #undef ctf_custom_code | |
541 | #define ctf_custom_code(...) __VA_ARGS__ | |
542 | ||
0d1d4002 | 543 | #undef TP_PROTO |
f127e61e | 544 | #define TP_PROTO(...) __VA_ARGS__ |
6db3d13b | 545 | |
f127e61e MD |
546 | #undef TP_FIELDS |
547 | #define TP_FIELDS(...) __VA_ARGS__ | |
6db3d13b | 548 | |
7ca580f8 MD |
549 | #undef TP_locvar |
550 | #define TP_locvar(...) __VA_ARGS__ | |
551 | ||
3bc29f0a | 552 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 553 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
114667d5 | 554 | static inline ssize_t __event_get_size__##_name(void *__tp_locvar, _proto) \ |
0d1d4002 MD |
555 | { \ |
556 | size_t __event_len = 0; \ | |
d3de7f14 | 557 | unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \ |
7ca580f8 | 558 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
d3de7f14 | 559 | \ |
f127e61e | 560 | _fields \ |
d3de7f14 | 561 | return __event_len; \ |
114667d5 MD |
562 | \ |
563 | error: \ | |
564 | __attribute__((unused)); \ | |
565 | return -1; \ | |
d3de7f14 MD |
566 | } |
567 | ||
3bc29f0a | 568 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 569 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
114667d5 | 570 | static inline ssize_t __event_get_size__##_name(void *__tp_locvar) \ |
d3de7f14 MD |
571 | { \ |
572 | size_t __event_len = 0; \ | |
573 | unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \ | |
7ca580f8 | 574 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
0d1d4002 | 575 | \ |
f127e61e | 576 | _fields \ |
0d1d4002 | 577 | return __event_len; \ |
114667d5 MD |
578 | \ |
579 | error: \ | |
580 | __attribute__((unused)); \ | |
581 | return -1; \ | |
6db3d13b | 582 | } |
40652b65 MD |
583 | |
584 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
585 | ||
f127e61e | 586 | |
40652b65 | 587 | /* |
f127e61e | 588 | * Stage 4.1 of tracepoint event generation. |
e763dbf5 | 589 | * |
f127e61e MD |
590 | * Create static inline function that layout the filter stack data. |
591 | * We make both write and nowrite data available to the filter. | |
e763dbf5 MD |
592 | */ |
593 | ||
f127e61e | 594 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 MD |
595 | #include <probes/lttng-events-reset.h> |
596 | #include <probes/lttng-events-write.h> | |
597 | #include <probes/lttng-events-nowrite.h> | |
f127e61e MD |
598 | |
599 | #undef _ctf_integer_ext_fetched | |
600 | #define _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
601 | if (lttng_is_signed_type(_type)) { \ | |
602 | int64_t __ctf_tmp_int64; \ | |
603 | switch (sizeof(_type)) { \ | |
604 | case 1: \ | |
605 | { \ | |
606 | union { _type t; int8_t v; } __tmp = { (_type) (_src) }; \ | |
607 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ | |
608 | break; \ | |
609 | } \ | |
610 | case 2: \ | |
611 | { \ | |
612 | union { _type t; int16_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
613 | if (_byte_order != __BYTE_ORDER) \ |
614 | __swab16s(&__tmp.v); \ | |
f127e61e MD |
615 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
616 | break; \ | |
617 | } \ | |
618 | case 4: \ | |
619 | { \ | |
620 | union { _type t; int32_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
621 | if (_byte_order != __BYTE_ORDER) \ |
622 | __swab32s(&__tmp.v); \ | |
f127e61e MD |
623 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
624 | break; \ | |
625 | } \ | |
626 | case 8: \ | |
627 | { \ | |
628 | union { _type t; int64_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
629 | if (_byte_order != __BYTE_ORDER) \ |
630 | __swab64s(&__tmp.v); \ | |
f127e61e MD |
631 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
632 | break; \ | |
633 | } \ | |
634 | default: \ | |
635 | BUG_ON(1); \ | |
636 | }; \ | |
637 | memcpy(__stack_data, &__ctf_tmp_int64, sizeof(int64_t)); \ | |
638 | } else { \ | |
639 | uint64_t __ctf_tmp_uint64; \ | |
640 | switch (sizeof(_type)) { \ | |
641 | case 1: \ | |
642 | { \ | |
643 | union { _type t; uint8_t v; } __tmp = { (_type) (_src) }; \ | |
644 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ | |
645 | break; \ | |
646 | } \ | |
647 | case 2: \ | |
648 | { \ | |
649 | union { _type t; uint16_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
650 | if (_byte_order != __BYTE_ORDER) \ |
651 | __swab16s(&__tmp.v); \ | |
f127e61e MD |
652 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
653 | break; \ | |
654 | } \ | |
655 | case 4: \ | |
656 | { \ | |
657 | union { _type t; uint32_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
658 | if (_byte_order != __BYTE_ORDER) \ |
659 | __swab32s(&__tmp.v); \ | |
f127e61e MD |
660 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
661 | break; \ | |
662 | } \ | |
663 | case 8: \ | |
664 | { \ | |
665 | union { _type t; uint64_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
666 | if (_byte_order != __BYTE_ORDER) \ |
667 | __swab64s(&__tmp.v); \ | |
f127e61e MD |
668 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
669 | break; \ | |
670 | } \ | |
671 | default: \ | |
672 | BUG_ON(1); \ | |
673 | }; \ | |
674 | memcpy(__stack_data, &__ctf_tmp_uint64, sizeof(uint64_t)); \ | |
675 | } \ | |
676 | __stack_data += sizeof(int64_t); | |
677 | ||
678 | #undef _ctf_integer_ext_isuser0 | |
679 | #define _ctf_integer_ext_isuser0(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
680 | _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) | |
681 | ||
682 | #undef _ctf_integer_ext_isuser1 | |
683 | #define _ctf_integer_ext_isuser1(_type, _item, _user_src, _byte_order, _base, _nowrite) \ | |
3c8ebbc8 MD |
684 | { \ |
685 | union { \ | |
686 | char __array[sizeof(_user_src)]; \ | |
687 | __typeof__(_user_src) __v; \ | |
688 | } __tmp_fetch; \ | |
689 | if (lib_ring_buffer_copy_from_user_check_nofault(__tmp_fetch.__array, \ | |
690 | &(_user_src), sizeof(_user_src))) \ | |
691 | memset(__tmp_fetch.__array, 0, sizeof(__tmp_fetch.__array)); \ | |
692 | _ctf_integer_ext_fetched(_type, _item, __tmp_fetch.__v, _byte_order, _base, _nowrite) \ | |
f127e61e | 693 | } |
e763dbf5 | 694 | |
f127e61e MD |
695 | #undef _ctf_integer_ext |
696 | #define _ctf_integer_ext(_type, _item, _user_src, _byte_order, _base, _user, _nowrite) \ | |
697 | _ctf_integer_ext_isuser##_user(_type, _item, _user_src, _byte_order, _base, _nowrite) | |
698 | ||
699 | #undef _ctf_array_encoded | |
700 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _user, _nowrite) \ | |
701 | { \ | |
702 | unsigned long __ctf_tmp_ulong = (unsigned long) (_length); \ | |
703 | const void *__ctf_tmp_ptr = (_src); \ | |
704 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ | |
705 | __stack_data += sizeof(unsigned long); \ | |
6b272cda MD |
706 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
707 | __stack_data += sizeof(void *); \ | |
f127e61e MD |
708 | } |
709 | ||
43803cf2 MD |
710 | #undef _ctf_array_bitfield |
711 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
712 | _ctf_array_encoded(_type, _item, _src, _length, none, _user, _nowrite) | |
713 | ||
f127e61e MD |
714 | #undef _ctf_sequence_encoded |
715 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 716 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
717 | { \ |
718 | unsigned long __ctf_tmp_ulong = (unsigned long) (_src_length); \ | |
719 | const void *__ctf_tmp_ptr = (_src); \ | |
720 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ | |
721 | __stack_data += sizeof(unsigned long); \ | |
6b272cda MD |
722 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
723 | __stack_data += sizeof(void *); \ | |
f127e61e MD |
724 | } |
725 | ||
43803cf2 MD |
726 | #undef _ctf_sequence_bitfield |
727 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
728 | _length_type, _src_length, \ | |
729 | _user, _nowrite) \ | |
730 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
731 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
732 | ||
f127e61e MD |
733 | #undef _ctf_string |
734 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
735 | { \ | |
1d84e8e7 MD |
736 | const void *__ctf_tmp_ptr = \ |
737 | ((_src) ? (_src) : __LTTNG_NULL_STRING); \ | |
6b272cda MD |
738 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
739 | __stack_data += sizeof(void *); \ | |
f127e61e | 740 | } |
c6e3f225 | 741 | |
141ddf28 MD |
742 | #undef _ctf_enum |
743 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
744 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
745 | ||
e763dbf5 | 746 | #undef TP_PROTO |
f127e61e | 747 | #define TP_PROTO(...) __VA_ARGS__ |
e763dbf5 | 748 | |
f127e61e MD |
749 | #undef TP_FIELDS |
750 | #define TP_FIELDS(...) __VA_ARGS__ | |
e763dbf5 | 751 | |
7ca580f8 MD |
752 | #undef TP_locvar |
753 | #define TP_locvar(...) __VA_ARGS__ | |
754 | ||
f127e61e | 755 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 756 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
757 | static inline \ |
758 | void __event_prepare_filter_stack__##_name(char *__stack_data, \ | |
759 | void *__tp_locvar) \ | |
e763dbf5 | 760 | { \ |
7ca580f8 MD |
761 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
762 | \ | |
f127e61e | 763 | _fields \ |
e763dbf5 MD |
764 | } |
765 | ||
f127e61e | 766 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 767 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
768 | static inline \ |
769 | void __event_prepare_filter_stack__##_name(char *__stack_data, \ | |
770 | void *__tp_locvar, _proto) \ | |
d3de7f14 | 771 | { \ |
7ca580f8 MD |
772 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
773 | \ | |
f127e61e | 774 | _fields \ |
d3de7f14 MD |
775 | } |
776 | ||
e763dbf5 MD |
777 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
778 | ||
e763dbf5 | 779 | /* |
f127e61e | 780 | * Stage 5 of the trace events. |
40652b65 | 781 | * |
f127e61e | 782 | * Create static inline function that calculates event payload alignment. |
3c4ffab9 MD |
783 | */ |
784 | ||
f127e61e | 785 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 MD |
786 | #include <probes/lttng-events-reset.h> |
787 | #include <probes/lttng-events-write.h> | |
3c4ffab9 | 788 | |
f127e61e MD |
789 | #undef _ctf_integer_ext |
790 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ | |
791 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
3c4ffab9 | 792 | |
f127e61e MD |
793 | #undef _ctf_array_encoded |
794 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _user, _nowrite) \ | |
795 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
3c4ffab9 | 796 | |
43803cf2 MD |
797 | #undef _ctf_array_bitfield |
798 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
799 | _ctf_array_encoded(_type, _item, _src, _length, none, _user, _nowrite) | |
800 | ||
f127e61e MD |
801 | #undef _ctf_sequence_encoded |
802 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 803 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
804 | __event_align = max_t(size_t, __event_align, lttng_alignof(_length_type)); \ |
805 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
64c796d8 | 806 | |
43803cf2 MD |
807 | #undef _ctf_sequence_bitfield |
808 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
809 | _length_type, _src_length, \ | |
810 | _user, _nowrite) \ | |
811 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
812 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
813 | ||
f127e61e MD |
814 | #undef _ctf_string |
815 | #define _ctf_string(_item, _src, _user, _nowrite) | |
64c796d8 | 816 | |
141ddf28 MD |
817 | #undef _ctf_enum |
818 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
819 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
820 | ||
f64dd4be MD |
821 | #undef ctf_align |
822 | #define ctf_align(_type) \ | |
823 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
824 | ||
f127e61e MD |
825 | #undef TP_PROTO |
826 | #define TP_PROTO(...) __VA_ARGS__ | |
84da5206 | 827 | |
f127e61e MD |
828 | #undef TP_FIELDS |
829 | #define TP_FIELDS(...) __VA_ARGS__ | |
c6e3f225 | 830 | |
f127e61e MD |
831 | #undef TP_locvar |
832 | #define TP_locvar(...) __VA_ARGS__ | |
3c4ffab9 | 833 | |
f64dd4be MD |
834 | #undef ctf_custom_field |
835 | #define ctf_custom_field(_type, _item, _code) _code | |
836 | ||
837 | #undef ctf_custom_code | |
838 | #define ctf_custom_code(...) \ | |
839 | { \ | |
840 | __VA_ARGS__ \ | |
841 | } | |
842 | ||
f127e61e | 843 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 844 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
845 | static inline size_t __event_get_align__##_name(void *__tp_locvar, _proto) \ |
846 | { \ | |
847 | size_t __event_align = 1; \ | |
848 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ | |
849 | \ | |
850 | _fields \ | |
851 | return __event_align; \ | |
852 | } | |
3c4ffab9 | 853 | |
3bc29f0a | 854 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 855 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
856 | static inline size_t __event_get_align__##_name(void *__tp_locvar) \ |
857 | { \ | |
858 | size_t __event_align = 1; \ | |
859 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ | |
860 | \ | |
861 | _fields \ | |
862 | return __event_align; \ | |
863 | } | |
d3de7f14 | 864 | |
3c4ffab9 MD |
865 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
866 | ||
3c4ffab9 | 867 | /* |
f127e61e | 868 | * Stage 6 of tracepoint event generation. |
e763dbf5 | 869 | * |
f127e61e MD |
870 | * Create the probe function. This function calls event size calculation |
871 | * and writes event data into the buffer. | |
40652b65 MD |
872 | */ |
873 | ||
f127e61e | 874 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 MD |
875 | #include <probes/lttng-events-reset.h> |
876 | #include <probes/lttng-events-write.h> | |
c6e3f225 | 877 | |
f127e61e MD |
878 | #undef _ctf_integer_ext_fetched |
879 | #define _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
e763dbf5 | 880 | { \ |
f127e61e MD |
881 | _type __tmp = _src; \ |
882 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\ | |
aaa4004a | 883 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ |
f127e61e MD |
884 | } |
885 | ||
886 | #undef _ctf_integer_ext_isuser0 | |
887 | #define _ctf_integer_ext_isuser0(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
888 | _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) | |
889 | ||
890 | #undef _ctf_integer_ext_isuser1 | |
891 | #define _ctf_integer_ext_isuser1(_type, _item, _user_src, _byte_order, _base, _nowrite) \ | |
892 | { \ | |
3c8ebbc8 MD |
893 | union { \ |
894 | char __array[sizeof(_user_src)]; \ | |
895 | __typeof__(_user_src) __v; \ | |
896 | } __tmp_fetch; \ | |
897 | if (lib_ring_buffer_copy_from_user_check_nofault(__tmp_fetch.__array, \ | |
898 | &(_user_src), sizeof(_user_src))) \ | |
899 | memset(__tmp_fetch.__array, 0, sizeof(__tmp_fetch.__array)); \ | |
900 | _ctf_integer_ext_fetched(_type, _item, __tmp_fetch.__v, _byte_order, _base, _nowrite) \ | |
f127e61e MD |
901 | } |
902 | ||
903 | #undef _ctf_integer_ext | |
904 | #define _ctf_integer_ext(_type, _item, _user_src, _byte_order, _base, _user, _nowrite) \ | |
905 | _ctf_integer_ext_isuser##_user(_type, _item, _user_src, _byte_order, _base, _nowrite) | |
906 | ||
907 | #undef _ctf_array_encoded | |
908 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _user, _nowrite) \ | |
909 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
910 | if (_user) { \ | |
911 | __chan->ops->event_write_from_user(&__ctx, _src, sizeof(_type) * (_length)); \ | |
912 | } else { \ | |
913 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); \ | |
914 | } | |
915 | ||
43803cf2 MD |
916 | #if (__BYTE_ORDER == __LITTLE_ENDIAN) |
917 | #undef _ctf_array_bitfield | |
918 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
919 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
920 | if (_user) { \ | |
921 | __chan->ops->event_write_from_user(&__ctx, _src, sizeof(_type) * (_length)); \ | |
922 | } else { \ | |
923 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); \ | |
924 | } | |
925 | #else /* #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
926 | /* | |
927 | * For big endian, we need to byteswap into little endian. | |
928 | */ | |
929 | #undef _ctf_array_bitfield | |
930 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
931 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
932 | { \ | |
933 | size_t _i; \ | |
934 | \ | |
935 | for (_i = 0; _i < (_length); _i++) { \ | |
936 | _type _tmp; \ | |
937 | \ | |
938 | if (_user) { \ | |
939 | if (get_user(_tmp, (_type *) _src + _i)) \ | |
940 | _tmp = 0; \ | |
941 | } else { \ | |
942 | _tmp = ((_type *) _src)[_i]; \ | |
943 | } \ | |
944 | switch (sizeof(_type)) { \ | |
945 | case 1: \ | |
946 | break; \ | |
947 | case 2: \ | |
948 | _tmp = cpu_to_le16(_tmp); \ | |
949 | break; \ | |
950 | case 4: \ | |
951 | _tmp = cpu_to_le32(_tmp); \ | |
952 | break; \ | |
953 | case 8: \ | |
954 | _tmp = cpu_to_le64(_tmp); \ | |
955 | break; \ | |
956 | default: \ | |
957 | BUG_ON(1); \ | |
958 | } \ | |
959 | __chan->ops->event_write(&__ctx, &_tmp, sizeof(_type)); \ | |
960 | } \ | |
961 | } | |
962 | #endif /* #else #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
963 | ||
f127e61e MD |
964 | #undef _ctf_sequence_encoded |
965 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 966 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
84da5206 | 967 | { \ |
114667d5 | 968 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx]; \ |
f127e61e MD |
969 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
970 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
84da5206 | 971 | } \ |
f127e61e MD |
972 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ |
973 | if (_user) { \ | |
974 | __chan->ops->event_write_from_user(&__ctx, _src, \ | |
975 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
976 | } else { \ | |
977 | __chan->ops->event_write(&__ctx, _src, \ | |
978 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
979 | } | |
980 | ||
43803cf2 MD |
981 | #if (__BYTE_ORDER == __LITTLE_ENDIAN) |
982 | #undef _ctf_sequence_bitfield | |
983 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
984 | _length_type, _src_length, \ | |
985 | _user, _nowrite) \ | |
986 | { \ | |
114667d5 | 987 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx] * sizeof(_type) * CHAR_BIT; \ |
43803cf2 MD |
988 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
989 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
990 | } \ | |
991 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
992 | if (_user) { \ | |
993 | __chan->ops->event_write_from_user(&__ctx, _src, \ | |
994 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
995 | } else { \ | |
996 | __chan->ops->event_write(&__ctx, _src, \ | |
997 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
998 | } | |
999 | #else /* #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
1000 | /* | |
1001 | * For big endian, we need to byteswap into little endian. | |
1002 | */ | |
1003 | #undef _ctf_sequence_bitfield | |
1004 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
1005 | _length_type, _src_length, \ | |
1006 | _user, _nowrite) \ | |
1007 | { \ | |
114667d5 | 1008 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx] * sizeof(_type) * CHAR_BIT; \ |
43803cf2 MD |
1009 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
1010 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
1011 | } \ | |
1012 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
1013 | { \ | |
1014 | size_t _i, _length; \ | |
1015 | \ | |
1016 | _length = __get_dynamic_len(dest); \ | |
1017 | for (_i = 0; _i < _length; _i++) { \ | |
1018 | _type _tmp; \ | |
1019 | \ | |
1020 | if (_user) { \ | |
1021 | if (get_user(_tmp, (_type *) _src + _i)) \ | |
1022 | _tmp = 0; \ | |
1023 | } else { \ | |
1024 | _tmp = ((_type *) _src)[_i]; \ | |
1025 | } \ | |
1026 | switch (sizeof(_type)) { \ | |
1027 | case 1: \ | |
1028 | break; \ | |
1029 | case 2: \ | |
1030 | _tmp = cpu_to_le16(_tmp); \ | |
1031 | break; \ | |
1032 | case 4: \ | |
1033 | _tmp = cpu_to_le32(_tmp); \ | |
1034 | break; \ | |
1035 | case 8: \ | |
1036 | _tmp = cpu_to_le64(_tmp); \ | |
1037 | break; \ | |
1038 | default: \ | |
1039 | BUG_ON(1); \ | |
1040 | } \ | |
1041 | __chan->ops->event_write(&__ctx, &_tmp, sizeof(_type)); \ | |
1042 | } \ | |
1043 | } | |
1044 | #endif /* #else #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
1045 | ||
f127e61e MD |
1046 | #undef _ctf_string |
1047 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
f127e61e | 1048 | if (_user) { \ |
1d84e8e7 | 1049 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(*(_src))); \ |
f127e61e MD |
1050 | __chan->ops->event_strcpy_from_user(&__ctx, _src, \ |
1051 | __get_dynamic_len(dest)); \ | |
1052 | } else { \ | |
1d84e8e7 MD |
1053 | const char *__ctf_tmp_string = \ |
1054 | ((_src) ? (_src) : __LTTNG_NULL_STRING); \ | |
1055 | lib_ring_buffer_align_ctx(&__ctx, \ | |
1056 | lttng_alignof(*__ctf_tmp_string)); \ | |
1057 | __chan->ops->event_strcpy(&__ctx, __ctf_tmp_string, \ | |
f127e61e MD |
1058 | __get_dynamic_len(dest)); \ |
1059 | } | |
e763dbf5 | 1060 | |
141ddf28 MD |
1061 | #undef _ctf_enum |
1062 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
1063 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
f64dd4be MD |
1064 | |
1065 | #undef ctf_align | |
1066 | #define ctf_align(_type) \ | |
1067 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); | |
1068 | ||
1069 | #undef ctf_custom_field | |
1070 | #define ctf_custom_field(_type, _item, _code) _code | |
1071 | ||
1072 | #undef ctf_custom_code | |
1073 | #define ctf_custom_code(...) \ | |
1074 | { \ | |
1075 | __VA_ARGS__ \ | |
1076 | } | |
1077 | ||
e763dbf5 | 1078 | /* Beware: this get len actually consumes the len value */ |
f127e61e | 1079 | #undef __get_dynamic_len |
114667d5 | 1080 | #define __get_dynamic_len(field) this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx++] |
e763dbf5 MD |
1081 | |
1082 | #undef TP_PROTO | |
f127e61e | 1083 | #define TP_PROTO(...) __VA_ARGS__ |
e763dbf5 MD |
1084 | |
1085 | #undef TP_ARGS | |
f127e61e | 1086 | #define TP_ARGS(...) __VA_ARGS__ |
e763dbf5 | 1087 | |
f127e61e MD |
1088 | #undef TP_FIELDS |
1089 | #define TP_FIELDS(...) __VA_ARGS__ | |
e763dbf5 | 1090 | |
7ca580f8 MD |
1091 | #undef TP_locvar |
1092 | #define TP_locvar(...) __VA_ARGS__ | |
1093 | ||
265822ae MD |
1094 | #undef TP_code_pre |
1095 | #define TP_code_pre(...) __VA_ARGS__ | |
1096 | ||
1097 | #undef TP_code_post | |
1098 | #define TP_code_post(...) __VA_ARGS__ | |
7ca580f8 | 1099 | |
c337ddc2 MD |
1100 | /* |
1101 | * For state dump, check that "session" argument (mandatory) matches the | |
1102 | * session this event belongs to. Ensures that we write state dump data only | |
1103 | * into the started session, not into all sessions. | |
1104 | */ | |
1105 | #ifdef TP_SESSION_CHECK | |
1106 | #define _TP_SESSION_CHECK(session, csession) (session == csession) | |
1107 | #else /* TP_SESSION_CHECK */ | |
1108 | #define _TP_SESSION_CHECK(session, csession) 1 | |
1109 | #endif /* TP_SESSION_CHECK */ | |
1110 | ||
f9771d39 | 1111 | /* |
f127e61e MD |
1112 | * Using twice size for filter stack data to hold size and pointer for |
1113 | * each field (worse case). For integers, max size required is 64-bit. | |
1114 | * Same for double-precision floats. Those fit within | |
1115 | * 2*sizeof(unsigned long) for all supported architectures. | |
1116 | * Perform UNION (||) of filter runtime list. | |
f9771d39 | 1117 | */ |
3bc29f0a | 1118 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 1119 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
e763dbf5 MD |
1120 | static void __event_probe__##_name(void *__data, _proto) \ |
1121 | { \ | |
7ca580f8 | 1122 | struct probe_local_vars { _locvar }; \ |
a90917c3 | 1123 | struct lttng_event *__event = __data; \ |
79150a49 JD |
1124 | struct lttng_probe_ctx __lttng_probe_ctx = { \ |
1125 | .event = __event, \ | |
ccecf3fb | 1126 | .interruptible = !irqs_disabled(), \ |
79150a49 | 1127 | }; \ |
a90917c3 | 1128 | struct lttng_channel *__chan = __event->chan; \ |
e0130fab | 1129 | struct lttng_session *__session = __chan->session; \ |
aaa4004a | 1130 | struct lib_ring_buffer_ctx __ctx; \ |
114667d5 MD |
1131 | ssize_t __event_len; \ |
1132 | size_t __event_align; \ | |
ec0a7fba | 1133 | size_t __orig_dynamic_len_offset, __dynamic_len_idx __attribute__((unused)); \ |
f127e61e | 1134 | union { \ |
114667d5 | 1135 | size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)]; \ |
f127e61e MD |
1136 | char __filter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \ |
1137 | } __stackvar; \ | |
e763dbf5 | 1138 | int __ret; \ |
7ca580f8 MD |
1139 | struct probe_local_vars __tp_locvar; \ |
1140 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
1141 | &__tp_locvar; \ | |
e0130fab | 1142 | struct lttng_pid_tracker *__lpf; \ |
e763dbf5 | 1143 | \ |
e0130fab | 1144 | if (!_TP_SESSION_CHECK(session, __session)) \ |
c337ddc2 | 1145 | return; \ |
acb98454 | 1146 | if (unlikely(!READ_ONCE(__session->active))) \ |
e64957da | 1147 | return; \ |
acb98454 | 1148 | if (unlikely(!READ_ONCE(__chan->enabled))) \ |
e64957da | 1149 | return; \ |
acb98454 | 1150 | if (unlikely(!READ_ONCE(__event->enabled))) \ |
52fc2e1f | 1151 | return; \ |
7a09dcb7 | 1152 | __lpf = lttng_rcu_dereference(__session->pid_tracker); \ |
69dba510 | 1153 | if (__lpf && likely(!lttng_pid_tracker_lookup(__lpf, current->tgid))) \ |
e0130fab | 1154 | return; \ |
114667d5 MD |
1155 | __orig_dynamic_len_offset = this_cpu_ptr(<tng_dynamic_len_stack)->offset; \ |
1156 | __dynamic_len_idx = __orig_dynamic_len_offset; \ | |
265822ae | 1157 | _code_pre \ |
f127e61e MD |
1158 | if (unlikely(!list_empty(&__event->bytecode_runtime_head))) { \ |
1159 | struct lttng_bytecode_runtime *bc_runtime; \ | |
1160 | int __filter_record = __event->has_enablers_without_bytecode; \ | |
1161 | \ | |
1162 | __event_prepare_filter_stack__##_name(__stackvar.__filter_stack_data, \ | |
1163 | tp_locvar, _args); \ | |
7a09dcb7 | 1164 | lttng_list_for_each_entry_rcu(bc_runtime, &__event->bytecode_runtime_head, node) { \ |
79150a49 | 1165 | if (unlikely(bc_runtime->filter(bc_runtime, &__lttng_probe_ctx, \ |
f127e61e MD |
1166 | __stackvar.__filter_stack_data) & LTTNG_FILTER_RECORD_FLAG)) \ |
1167 | __filter_record = 1; \ | |
1168 | } \ | |
1169 | if (likely(!__filter_record)) \ | |
265822ae | 1170 | goto __post; \ |
f127e61e | 1171 | } \ |
114667d5 MD |
1172 | __event_len = __event_get_size__##_name(tp_locvar, _args); \ |
1173 | if (unlikely(__event_len < 0)) { \ | |
1174 | lib_ring_buffer_lost_event_too_big(__chan->chan); \ | |
1175 | goto __post; \ | |
1176 | } \ | |
7ca580f8 | 1177 | __event_align = __event_get_align__##_name(tp_locvar, _args); \ |
79150a49 | 1178 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, &__lttng_probe_ctx, __event_len, \ |
e763dbf5 | 1179 | __event_align, -1); \ |
aaa4004a | 1180 | __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ |
e763dbf5 | 1181 | if (__ret < 0) \ |
265822ae | 1182 | goto __post; \ |
f127e61e | 1183 | _fields \ |
aaa4004a | 1184 | __chan->ops->event_commit(&__ctx); \ |
265822ae MD |
1185 | __post: \ |
1186 | _code_post \ | |
114667d5 MD |
1187 | barrier(); /* use before un-reserve. */ \ |
1188 | this_cpu_ptr(<tng_dynamic_len_stack)->offset = __orig_dynamic_len_offset; \ | |
265822ae | 1189 | return; \ |
e763dbf5 MD |
1190 | } |
1191 | ||
3bc29f0a | 1192 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 1193 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f7bdf4db MD |
1194 | static void __event_probe__##_name(void *__data) \ |
1195 | { \ | |
7ca580f8 | 1196 | struct probe_local_vars { _locvar }; \ |
a90917c3 | 1197 | struct lttng_event *__event = __data; \ |
79150a49 JD |
1198 | struct lttng_probe_ctx __lttng_probe_ctx = { \ |
1199 | .event = __event, \ | |
ccecf3fb | 1200 | .interruptible = !irqs_disabled(), \ |
79150a49 | 1201 | }; \ |
a90917c3 | 1202 | struct lttng_channel *__chan = __event->chan; \ |
e0130fab | 1203 | struct lttng_session *__session = __chan->session; \ |
f7bdf4db | 1204 | struct lib_ring_buffer_ctx __ctx; \ |
114667d5 MD |
1205 | ssize_t __event_len; \ |
1206 | size_t __event_align; \ | |
ec0a7fba | 1207 | size_t __orig_dynamic_len_offset, __dynamic_len_idx __attribute__((unused)); \ |
f127e61e | 1208 | union { \ |
114667d5 | 1209 | size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)]; \ |
f127e61e MD |
1210 | char __filter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \ |
1211 | } __stackvar; \ | |
f7bdf4db | 1212 | int __ret; \ |
7ca580f8 MD |
1213 | struct probe_local_vars __tp_locvar; \ |
1214 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
1215 | &__tp_locvar; \ | |
e0130fab | 1216 | struct lttng_pid_tracker *__lpf; \ |
f7bdf4db | 1217 | \ |
e0130fab | 1218 | if (!_TP_SESSION_CHECK(session, __session)) \ |
c337ddc2 | 1219 | return; \ |
acb98454 | 1220 | if (unlikely(!READ_ONCE(__session->active))) \ |
f7bdf4db | 1221 | return; \ |
acb98454 | 1222 | if (unlikely(!READ_ONCE(__chan->enabled))) \ |
f7bdf4db | 1223 | return; \ |
acb98454 | 1224 | if (unlikely(!READ_ONCE(__event->enabled))) \ |
f7bdf4db | 1225 | return; \ |
7a09dcb7 | 1226 | __lpf = lttng_rcu_dereference(__session->pid_tracker); \ |
e0130fab MD |
1227 | if (__lpf && likely(!lttng_pid_tracker_lookup(__lpf, current->pid))) \ |
1228 | return; \ | |
114667d5 MD |
1229 | __orig_dynamic_len_offset = this_cpu_ptr(<tng_dynamic_len_stack)->offset; \ |
1230 | __dynamic_len_idx = __orig_dynamic_len_offset; \ | |
265822ae | 1231 | _code_pre \ |
f127e61e MD |
1232 | if (unlikely(!list_empty(&__event->bytecode_runtime_head))) { \ |
1233 | struct lttng_bytecode_runtime *bc_runtime; \ | |
1234 | int __filter_record = __event->has_enablers_without_bytecode; \ | |
1235 | \ | |
1236 | __event_prepare_filter_stack__##_name(__stackvar.__filter_stack_data, \ | |
1237 | tp_locvar); \ | |
7a09dcb7 | 1238 | lttng_list_for_each_entry_rcu(bc_runtime, &__event->bytecode_runtime_head, node) { \ |
79150a49 | 1239 | if (unlikely(bc_runtime->filter(bc_runtime, &__lttng_probe_ctx, \ |
f127e61e MD |
1240 | __stackvar.__filter_stack_data) & LTTNG_FILTER_RECORD_FLAG)) \ |
1241 | __filter_record = 1; \ | |
1242 | } \ | |
1243 | if (likely(!__filter_record)) \ | |
265822ae | 1244 | goto __post; \ |
f127e61e | 1245 | } \ |
114667d5 MD |
1246 | __event_len = __event_get_size__##_name(tp_locvar); \ |
1247 | if (unlikely(__event_len < 0)) { \ | |
1248 | lib_ring_buffer_lost_event_too_big(__chan->chan); \ | |
1249 | goto __post; \ | |
1250 | } \ | |
7ca580f8 | 1251 | __event_align = __event_get_align__##_name(tp_locvar); \ |
79150a49 | 1252 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, &__lttng_probe_ctx, __event_len, \ |
f7bdf4db MD |
1253 | __event_align, -1); \ |
1254 | __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ | |
1255 | if (__ret < 0) \ | |
265822ae | 1256 | goto __post; \ |
f127e61e | 1257 | _fields \ |
f7bdf4db | 1258 | __chan->ops->event_commit(&__ctx); \ |
265822ae MD |
1259 | __post: \ |
1260 | _code_post \ | |
114667d5 MD |
1261 | barrier(); /* use before un-reserve. */ \ |
1262 | this_cpu_ptr(<tng_dynamic_len_stack)->offset = __orig_dynamic_len_offset; \ | |
265822ae | 1263 | return; \ |
f7bdf4db MD |
1264 | } |
1265 | ||
e763dbf5 MD |
1266 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
1267 | ||
f127e61e MD |
1268 | #undef __get_dynamic_len |
1269 | ||
1270 | /* | |
1271 | * Stage 7 of the trace events. | |
1272 | * | |
1273 | * Create event descriptions. | |
1274 | */ | |
1275 | ||
1276 | /* Named field types must be defined in lttng-types.h */ | |
1277 | ||
ba012e22 | 1278 | #include <probes/lttng-events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
f127e61e MD |
1279 | |
1280 | #ifndef TP_PROBE_CB | |
1281 | #define TP_PROBE_CB(_template) &__event_probe__##_template | |
1282 | #endif | |
1283 | ||
1284 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
1285 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
1286 | static const struct lttng_event_desc __event_desc___##_map = { \ | |
1287 | .fields = __event_fields___##_template, \ | |
1288 | .name = #_map, \ | |
1289 | .kname = #_name, \ | |
1290 | .probe_callback = (void *) TP_PROBE_CB(_template), \ | |
1291 | .nr_fields = ARRAY_SIZE(__event_fields___##_template), \ | |
1292 | .owner = THIS_MODULE, \ | |
1293 | }; | |
1294 | ||
1295 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
1296 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
1297 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) | |
1298 | ||
1299 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
1300 | ||
1301 | /* | |
1302 | * Stage 8 of the trace events. | |
1303 | * | |
1304 | * Create an array of event description pointers. | |
1305 | */ | |
1306 | ||
ba012e22 | 1307 | #include <probes/lttng-events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
f127e61e MD |
1308 | |
1309 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
1310 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
1311 | &__event_desc___##_map, | |
1312 | ||
1313 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
1314 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
1315 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) | |
1316 | ||
1317 | #define TP_ID1(_token, _system) _token##_system | |
1318 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1319 | ||
1320 | static const struct lttng_event_desc *TP_ID(__event_desc___, TRACE_SYSTEM)[] = { | |
1321 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
1322 | }; | |
1323 | ||
1324 | #undef TP_ID1 | |
1325 | #undef TP_ID | |
1326 | ||
1327 | /* | |
1328 | * Stage 9 of the trace events. | |
1329 | * | |
1330 | * Create a toplevel descriptor for the whole probe. | |
1331 | */ | |
1332 | ||
1333 | #define TP_ID1(_token, _system) _token##_system | |
1334 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1335 | ||
1336 | /* non-const because list head will be modified when registered. */ | |
1337 | static __used struct lttng_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = { | |
1338 | .provider = __stringify(TRACE_SYSTEM), | |
1339 | .event_desc = TP_ID(__event_desc___, TRACE_SYSTEM), | |
1340 | .nr_events = ARRAY_SIZE(TP_ID(__event_desc___, TRACE_SYSTEM)), | |
1341 | .head = { NULL, NULL }, | |
1342 | .lazy_init_head = { NULL, NULL }, | |
1343 | .lazy = 0, | |
1344 | }; | |
1345 | ||
1346 | #undef TP_ID1 | |
1347 | #undef TP_ID | |
1348 | ||
3afe7aac | 1349 | /* |
c099397a | 1350 | * Stage 10 of the trace events. |
3afe7aac MD |
1351 | * |
1352 | * Register/unregister probes at module load/unload. | |
1353 | */ | |
1354 | ||
ba012e22 | 1355 | #include <probes/lttng-events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
3afe7aac MD |
1356 | |
1357 | #define TP_ID1(_token, _system) _token##_system | |
1358 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1359 | #define module_init_eval1(_token, _system) module_init(_token##_system) | |
1360 | #define module_init_eval(_token, _system) module_init_eval1(_token, _system) | |
1361 | #define module_exit_eval1(_token, _system) module_exit(_token##_system) | |
1362 | #define module_exit_eval(_token, _system) module_exit_eval1(_token, _system) | |
1363 | ||
2655f9ad | 1364 | #ifndef TP_MODULE_NOINIT |
3afe7aac MD |
1365 | static int TP_ID(__lttng_events_init__, TRACE_SYSTEM)(void) |
1366 | { | |
6d2a620c | 1367 | wrapper_vmalloc_sync_all(); |
a90917c3 | 1368 | return lttng_probe_register(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
1369 | } |
1370 | ||
3afe7aac MD |
1371 | static void TP_ID(__lttng_events_exit__, TRACE_SYSTEM)(void) |
1372 | { | |
a90917c3 | 1373 | lttng_probe_unregister(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
1374 | } |
1375 | ||
2655f9ad MD |
1376 | #ifndef TP_MODULE_NOAUTOLOAD |
1377 | module_init_eval(__lttng_events_init__, TRACE_SYSTEM); | |
3afe7aac | 1378 | module_exit_eval(__lttng_events_exit__, TRACE_SYSTEM); |
259b6cb3 | 1379 | #endif |
3afe7aac | 1380 | |
2655f9ad MD |
1381 | #endif |
1382 | ||
3afe7aac MD |
1383 | #undef module_init_eval |
1384 | #undef module_exit_eval | |
1385 | #undef TP_ID1 | |
1386 | #undef TP_ID | |
177b3692 MD |
1387 | |
1388 | #undef TP_PROTO | |
1389 | #undef TP_ARGS |