Commit | Line | Data |
---|---|---|
9f36eaed MJ |
1 | /* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1) |
2 | * | |
451e462f | 3 | * lttng-tracepoint-event-impl.h |
17baffe2 MD |
4 | * |
5 | * Copyright (C) 2009 Steven Rostedt <rostedt@goodmis.org> | |
f127e61e | 6 | * Copyright (C) 2009-2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
17baffe2 | 7 | */ |
f127e61e | 8 | |
d28686c1 | 9 | #include <linux/uaccess.h> |
d0dd2ecb | 10 | #include <linux/debugfs.h> |
f127e61e | 11 | #include <linux/rculist.h> |
43803cf2 | 12 | #include <asm/byteorder.h> |
bf1a9179 | 13 | #include <linux/swab.h> |
8d43abb7 MD |
14 | |
15 | #include <probes/lttng.h> | |
16 | #include <probes/lttng-types.h> | |
17 | #include <probes/lttng-probe-user.h> | |
18 | #include <wrapper/vmalloc.h> /* for wrapper_vmalloc_sync_all() */ | |
19 | #include <wrapper/ringbuffer/frontend_types.h> | |
3c8ebbc8 | 20 | #include <wrapper/ringbuffer/backend.h> |
8d43abb7 MD |
21 | #include <wrapper/rcu.h> |
22 | #include <lttng-events.h> | |
23 | #include <lttng-tracer-core.h> | |
ec85ce1d | 24 | #include <lttng-tp-mempool.h> |
40652b65 | 25 | |
1d84e8e7 MD |
26 | #define __LTTNG_NULL_STRING "(null)" |
27 | ||
40652b65 | 28 | /* |
6db3d13b | 29 | * Macro declarations used for all stages. |
40652b65 MD |
30 | */ |
31 | ||
76e4f017 MD |
32 | /* |
33 | * LTTng name mapping macros. LTTng remaps some of the kernel events to | |
34 | * enforce name-spacing. | |
35 | */ | |
3bc29f0a | 36 | #undef LTTNG_TRACEPOINT_EVENT_MAP |
f127e61e | 37 | #define LTTNG_TRACEPOINT_EVENT_MAP(name, map, proto, args, fields) \ |
3bc29f0a | 38 | LTTNG_TRACEPOINT_EVENT_CLASS(map, \ |
76e4f017 MD |
39 | PARAMS(proto), \ |
40 | PARAMS(args), \ | |
f127e61e | 41 | PARAMS(fields)) \ |
3bc29f0a | 42 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(map, name, map, PARAMS(proto), PARAMS(args)) |
76e4f017 | 43 | |
3bc29f0a | 44 | #undef LTTNG_TRACEPOINT_EVENT_MAP_NOARGS |
f127e61e | 45 | #define LTTNG_TRACEPOINT_EVENT_MAP_NOARGS(name, map, fields) \ |
3bc29f0a | 46 | LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(map, \ |
f127e61e | 47 | PARAMS(fields)) \ |
3bc29f0a | 48 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(map, name, map) |
76e4f017 | 49 | |
f127e61e | 50 | #undef LTTNG_TRACEPOINT_EVENT_CODE_MAP |
265822ae | 51 | #define LTTNG_TRACEPOINT_EVENT_CODE_MAP(name, map, proto, args, _locvar, _code_pre, fields, _code_post) \ |
f127e61e MD |
52 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE(map, \ |
53 | PARAMS(proto), \ | |
54 | PARAMS(args), \ | |
55 | PARAMS(_locvar), \ | |
265822ae MD |
56 | PARAMS(_code_pre), \ |
57 | PARAMS(fields), \ | |
58 | PARAMS(_code_post)) \ | |
f127e61e MD |
59 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(map, name, map, PARAMS(proto), PARAMS(args)) |
60 | ||
3bc29f0a | 61 | #undef LTTNG_TRACEPOINT_EVENT_CODE |
265822ae | 62 | #define LTTNG_TRACEPOINT_EVENT_CODE(name, proto, args, _locvar, _code_pre, fields, _code_post) \ |
f127e61e | 63 | LTTNG_TRACEPOINT_EVENT_CODE_MAP(name, name, \ |
7ca580f8 MD |
64 | PARAMS(proto), \ |
65 | PARAMS(args), \ | |
66 | PARAMS(_locvar), \ | |
265822ae MD |
67 | PARAMS(_code_pre), \ |
68 | PARAMS(fields), \ | |
69 | PARAMS(_code_post)) | |
fcf7fa33 | 70 | |
40652b65 | 71 | /* |
3bc29f0a MD |
72 | * LTTNG_TRACEPOINT_EVENT_CLASS can be used to add a generic function |
73 | * handlers for events. That is, if all events have the same parameters | |
74 | * and just have distinct trace points. Each tracepoint can be defined | |
75 | * with LTTNG_TRACEPOINT_EVENT_INSTANCE and that will map the | |
76 | * LTTNG_TRACEPOINT_EVENT_CLASS to the tracepoint. | |
40652b65 | 77 | * |
3bc29f0a MD |
78 | * LTTNG_TRACEPOINT_EVENT is a one to one mapping between tracepoint and |
79 | * template. | |
40652b65 | 80 | */ |
6db3d13b | 81 | |
3bc29f0a | 82 | #undef LTTNG_TRACEPOINT_EVENT |
f127e61e | 83 | #define LTTNG_TRACEPOINT_EVENT(name, proto, args, fields) \ |
3bc29f0a MD |
84 | LTTNG_TRACEPOINT_EVENT_MAP(name, name, \ |
85 | PARAMS(proto), \ | |
86 | PARAMS(args), \ | |
f127e61e | 87 | PARAMS(fields)) |
40652b65 | 88 | |
3bc29f0a | 89 | #undef LTTNG_TRACEPOINT_EVENT_NOARGS |
f127e61e MD |
90 | #define LTTNG_TRACEPOINT_EVENT_NOARGS(name, fields) \ |
91 | LTTNG_TRACEPOINT_EVENT_MAP_NOARGS(name, name, PARAMS(fields)) | |
76e4f017 | 92 | |
3bc29f0a MD |
93 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE |
94 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE(template, name, proto, args) \ | |
95 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(template, name, name, PARAMS(proto), PARAMS(args)) | |
76e4f017 | 96 | |
3bc29f0a MD |
97 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS |
98 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(template, name) \ | |
99 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(template, name, name) | |
76e4f017 | 100 | |
3bc29f0a | 101 | #undef LTTNG_TRACEPOINT_EVENT_CLASS |
f127e61e | 102 | #define LTTNG_TRACEPOINT_EVENT_CLASS(_name, _proto, _args, _fields) \ |
3bc29f0a | 103 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, PARAMS(_proto), PARAMS(_args), , , \ |
265822ae | 104 | PARAMS(_fields), ) |
7ca580f8 | 105 | |
3bc29f0a | 106 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS |
f127e61e | 107 | #define LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(_name, _fields) \ |
265822ae | 108 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, , , PARAMS(_fields), ) |
7ca580f8 MD |
109 | |
110 | ||
f62b389e | 111 | /* |
c099397a | 112 | * Stage 1 of the trace events. |
f62b389e MD |
113 | * |
114 | * Create dummy trace calls for each events, verifying that the LTTng module | |
3bc29f0a MD |
115 | * instrumentation headers match the kernel arguments. Will be optimized |
116 | * out by the compiler. | |
f62b389e MD |
117 | */ |
118 | ||
f127e61e | 119 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 | 120 | #include <probes/lttng-events-reset.h> |
f62b389e MD |
121 | |
122 | #undef TP_PROTO | |
f127e61e | 123 | #define TP_PROTO(...) __VA_ARGS__ |
f62b389e MD |
124 | |
125 | #undef TP_ARGS | |
f127e61e | 126 | #define TP_ARGS(...) __VA_ARGS__ |
f62b389e | 127 | |
3bc29f0a MD |
128 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP |
129 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
7eb827f2 | 130 | void trace_##_name(_proto); |
f62b389e | 131 | |
3bc29f0a MD |
132 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS |
133 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
cb1aa0c7 | 134 | void trace_##_name(void); |
f7bdf4db | 135 | |
f62b389e MD |
136 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
137 | ||
d0558de2 MD |
138 | /* |
139 | * Stage 1.1 of the trace events. | |
140 | * | |
141 | * Create dummy trace prototypes for each event class, and for each used | |
142 | * template. This will allow checking whether the prototypes from the | |
143 | * class and the instance using the class actually match. | |
144 | */ | |
145 | ||
ba012e22 | 146 | #include <probes/lttng-events-reset.h> /* Reset all macros within TRACE_EVENT */ |
d0558de2 MD |
147 | |
148 | #undef TP_PROTO | |
149 | #define TP_PROTO(...) __VA_ARGS__ | |
150 | ||
151 | #undef TP_ARGS | |
152 | #define TP_ARGS(...) __VA_ARGS__ | |
153 | ||
154 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
155 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
156 | void __event_template_proto___##_template(_proto); | |
157 | ||
158 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
159 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
160 | void __event_template_proto___##_template(void); | |
161 | ||
162 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE | |
265822ae | 163 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
d0558de2 MD |
164 | void __event_template_proto___##_name(_proto); |
165 | ||
166 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS | |
265822ae | 167 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
d0558de2 MD |
168 | void __event_template_proto___##_name(void); |
169 | ||
170 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
171 | ||
141ddf28 MD |
172 | /* |
173 | * Stage 1.2 of tracepoint event generation | |
174 | * | |
175 | * Unfolding the enums | |
176 | */ | |
177 | #include <probes/lttng-events-reset.h> /* Reset all macros within TRACE_EVENT */ | |
178 | ||
179 | /* Enumeration entry (single value) */ | |
180 | #undef ctf_enum_value | |
181 | #define ctf_enum_value(_string, _value) \ | |
182 | { \ | |
183 | .start = { \ | |
184 | .signedness = lttng_is_signed_type(__typeof__(_value)), \ | |
185 | .value = lttng_is_signed_type(__typeof__(_value)) ? \ | |
186 | (long long) (_value) : (_value), \ | |
187 | }, \ | |
188 | .end = { \ | |
189 | .signedness = lttng_is_signed_type(__typeof__(_value)), \ | |
190 | .value = lttng_is_signed_type(__typeof__(_value)) ? \ | |
191 | (long long) (_value) : (_value), \ | |
192 | }, \ | |
193 | .string = (_string), \ | |
194 | }, | |
195 | ||
196 | /* Enumeration entry (range) */ | |
197 | #undef ctf_enum_range | |
198 | #define ctf_enum_range(_string, _range_start, _range_end) \ | |
199 | { \ | |
200 | .start = { \ | |
201 | .signedness = lttng_is_signed_type(__typeof__(_range_start)), \ | |
202 | .value = lttng_is_signed_type(__typeof__(_range_start)) ? \ | |
203 | (long long) (_range_start) : (_range_start), \ | |
204 | }, \ | |
205 | .end = { \ | |
206 | .signedness = lttng_is_signed_type(__typeof__(_range_end)), \ | |
207 | .value = lttng_is_signed_type(__typeof__(_range_end)) ? \ | |
208 | (long long) (_range_end) : (_range_end), \ | |
209 | }, \ | |
210 | .string = (_string), \ | |
211 | }, | |
212 | ||
08ad1061 PP |
213 | /* Enumeration entry (automatic value; follows the rules of CTF) */ |
214 | #undef ctf_enum_auto | |
215 | #define ctf_enum_auto(_string) \ | |
216 | { \ | |
217 | .start = { \ | |
218 | .signedness = -1, \ | |
219 | .value = -1, \ | |
220 | }, \ | |
221 | .end = { \ | |
222 | .signedness = -1, \ | |
223 | .value = -1, \ | |
224 | }, \ | |
225 | .string = (_string), \ | |
226 | .options = { \ | |
227 | .is_auto = 1, \ | |
228 | } \ | |
229 | }, | |
230 | ||
141ddf28 MD |
231 | #undef TP_ENUM_VALUES |
232 | #define TP_ENUM_VALUES(...) \ | |
233 | __VA_ARGS__ | |
234 | ||
235 | #undef LTTNG_TRACEPOINT_ENUM | |
236 | #define LTTNG_TRACEPOINT_ENUM(_name, _values) \ | |
237 | const struct lttng_enum_entry __enum_values__##_name[] = { \ | |
238 | _values \ | |
239 | }; | |
240 | ||
241 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
242 | ||
6db3d13b | 243 | /* |
c099397a | 244 | * Stage 2 of the trace events. |
6db3d13b MD |
245 | * |
246 | * Create event field type metadata section. | |
247 | * Each event produce an array of fields. | |
248 | */ | |
249 | ||
f127e61e | 250 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 MD |
251 | #include <probes/lttng-events-reset.h> |
252 | #include <probes/lttng-events-write.h> | |
253 | #include <probes/lttng-events-nowrite.h> | |
6db3d13b | 254 | |
f127e61e MD |
255 | #undef _ctf_integer_ext |
256 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ | |
c099397a MD |
257 | { \ |
258 | .name = #_item, \ | |
43803cf2 | 259 | .type = __type_integer(_type, 0, 0, -1, _byte_order, _base, none),\ |
f127e61e MD |
260 | .nowrite = _nowrite, \ |
261 | .user = _user, \ | |
c099397a | 262 | }, |
40652b65 | 263 | |
f127e61e | 264 | #undef _ctf_array_encoded |
3834b99f | 265 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
299338c8 | 266 | { \ |
c099397a MD |
267 | .name = #_item, \ |
268 | .type = \ | |
269 | { \ | |
299338c8 | 270 | .atype = atype_array, \ |
f127e61e | 271 | .u = \ |
c099397a | 272 | { \ |
f127e61e MD |
273 | .array = \ |
274 | { \ | |
3834b99f | 275 | .elem_type = __type_integer(_type, 0, 0, 0, _byte_order, _base, _encoding), \ |
f127e61e MD |
276 | .length = _length, \ |
277 | } \ | |
278 | } \ | |
299338c8 | 279 | }, \ |
f127e61e MD |
280 | .nowrite = _nowrite, \ |
281 | .user = _user, \ | |
299338c8 | 282 | }, |
40652b65 | 283 | |
43803cf2 MD |
284 | #undef _ctf_array_bitfield |
285 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
286 | { \ | |
287 | .name = #_item, \ | |
288 | .type = \ | |
289 | { \ | |
3834b99f | 290 | .atype = atype_array_bitfield, \ |
43803cf2 MD |
291 | .u = \ |
292 | { \ | |
293 | .array = \ | |
294 | { \ | |
295 | .elem_type = __type_integer(_type, 1, 1, 0, __LITTLE_ENDIAN, 10, none), \ | |
296 | .length = (_length) * sizeof(_type) * CHAR_BIT, \ | |
297 | .elem_alignment = lttng_alignof(_type), \ | |
298 | } \ | |
299 | } \ | |
300 | }, \ | |
301 | .nowrite = _nowrite, \ | |
302 | .user = _user, \ | |
303 | }, | |
304 | ||
305 | ||
f127e61e MD |
306 | #undef _ctf_sequence_encoded |
307 | #define _ctf_sequence_encoded(_type, _item, _src, \ | |
308 | _length_type, _src_length, _encoding, \ | |
57ede728 | 309 | _byte_order, _base, _user, _nowrite) \ |
299338c8 | 310 | { \ |
c099397a MD |
311 | .name = #_item, \ |
312 | .type = \ | |
313 | { \ | |
299338c8 | 314 | .atype = atype_sequence, \ |
f127e61e | 315 | .u = \ |
c099397a | 316 | { \ |
f127e61e MD |
317 | .sequence = \ |
318 | { \ | |
43803cf2 MD |
319 | .length_type = __type_integer(_length_type, 0, 0, 0, __BYTE_ORDER, 10, none), \ |
320 | .elem_type = __type_integer(_type, 0, 0, -1, _byte_order, _base, _encoding), \ | |
321 | }, \ | |
322 | }, \ | |
323 | }, \ | |
324 | .nowrite = _nowrite, \ | |
325 | .user = _user, \ | |
326 | }, | |
327 | ||
328 | #undef _ctf_sequence_bitfield | |
329 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
330 | _length_type, _src_length, \ | |
331 | _user, _nowrite) \ | |
332 | { \ | |
333 | .name = #_item, \ | |
334 | .type = \ | |
335 | { \ | |
3834b99f | 336 | .atype = atype_sequence_bitfield, \ |
43803cf2 MD |
337 | .u = \ |
338 | { \ | |
339 | .sequence = \ | |
340 | { \ | |
341 | .length_type = __type_integer(_length_type, 0, 0, 0, __BYTE_ORDER, 10, none), \ | |
342 | .elem_type = __type_integer(_type, 1, 1, 0, __LITTLE_ENDIAN, 10, none), \ | |
343 | .elem_alignment = lttng_alignof(_type), \ | |
f127e61e | 344 | }, \ |
c099397a | 345 | }, \ |
299338c8 | 346 | }, \ |
f127e61e MD |
347 | .nowrite = _nowrite, \ |
348 | .user = _user, \ | |
299338c8 | 349 | }, |
40652b65 | 350 | |
f127e61e MD |
351 | #undef _ctf_string |
352 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
299338c8 | 353 | { \ |
c099397a MD |
354 | .name = #_item, \ |
355 | .type = \ | |
356 | { \ | |
299338c8 | 357 | .atype = atype_string, \ |
f127e61e MD |
358 | .u = \ |
359 | { \ | |
360 | .basic = { .string = { .encoding = lttng_encode_UTF8 } } \ | |
361 | }, \ | |
299338c8 | 362 | }, \ |
f127e61e MD |
363 | .nowrite = _nowrite, \ |
364 | .user = _user, \ | |
299338c8 | 365 | }, |
1d12cebd | 366 | |
141ddf28 MD |
367 | #undef _ctf_enum |
368 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
369 | { \ | |
370 | .name = #_item, \ | |
371 | .type = { \ | |
372 | .atype = atype_enum, \ | |
373 | .u = { \ | |
374 | .basic = { \ | |
375 | .enumeration = { \ | |
376 | .desc = &__enum_##_name, \ | |
377 | .container_type = { \ | |
378 | .size = sizeof(_type) * CHAR_BIT, \ | |
379 | .alignment = lttng_alignof(_type) * CHAR_BIT, \ | |
380 | .signedness = lttng_is_signed_type(_type), \ | |
381 | .reverse_byte_order = 0, \ | |
382 | .base = 10, \ | |
383 | .encoding = lttng_encode_none, \ | |
384 | }, \ | |
385 | }, \ | |
386 | }, \ | |
387 | }, \ | |
388 | }, \ | |
389 | .nowrite = _nowrite, \ | |
390 | .user = _user, \ | |
391 | }, | |
f64dd4be MD |
392 | |
393 | #undef ctf_custom_field | |
394 | #define ctf_custom_field(_type, _item, _code) \ | |
395 | { \ | |
396 | .name = #_item, \ | |
397 | .type = { _type }, \ | |
398 | .nowrite = 0, \ | |
399 | .user = 0, \ | |
400 | }, | |
401 | ||
402 | #undef ctf_custom_type | |
403 | #define ctf_custom_type(...) __VA_ARGS__ | |
404 | ||
f127e61e MD |
405 | #undef TP_FIELDS |
406 | #define TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */ | |
1d12cebd | 407 | |
3bc29f0a | 408 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 409 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
0d1d4002 | 410 | static const struct lttng_event_field __event_fields___##_name[] = { \ |
f127e61e | 411 | _fields \ |
299338c8 MD |
412 | }; |
413 | ||
3bc29f0a | 414 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae MD |
415 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
416 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, PARAMS(_fields), _code_post) | |
f7bdf4db | 417 | |
141ddf28 MD |
418 | #undef LTTNG_TRACEPOINT_ENUM |
419 | #define LTTNG_TRACEPOINT_ENUM(_name, _values) \ | |
420 | static const struct lttng_enum_desc __enum_##_name = { \ | |
421 | .name = #_name, \ | |
422 | .entries = __enum_values__##_name, \ | |
423 | .nr_entries = ARRAY_SIZE(__enum_values__##_name), \ | |
424 | }; | |
425 | ||
299338c8 MD |
426 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
427 | ||
19c57fbf | 428 | /* |
c099397a | 429 | * Stage 3 of the trace events. |
19c57fbf MD |
430 | * |
431 | * Create probe callback prototypes. | |
432 | */ | |
433 | ||
f127e61e | 434 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 | 435 | #include <probes/lttng-events-reset.h> |
19c57fbf MD |
436 | |
437 | #undef TP_PROTO | |
f127e61e | 438 | #define TP_PROTO(...) __VA_ARGS__ |
19c57fbf | 439 | |
3bc29f0a | 440 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 441 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
19c57fbf MD |
442 | static void __event_probe__##_name(void *__data, _proto); |
443 | ||
3bc29f0a | 444 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 445 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f7bdf4db MD |
446 | static void __event_probe__##_name(void *__data); |
447 | ||
19c57fbf MD |
448 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
449 | ||
f7bdf4db MD |
450 | /* |
451 | * Stage 4 of the trace events. | |
452 | * | |
40652b65 MD |
453 | * Create static inline function that calculates event size. |
454 | */ | |
455 | ||
f127e61e | 456 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 MD |
457 | #include <probes/lttng-events-reset.h> |
458 | #include <probes/lttng-events-write.h> | |
6db3d13b | 459 | |
f127e61e MD |
460 | #undef _ctf_integer_ext |
461 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ | |
a90917c3 | 462 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
0d1d4002 | 463 | __event_len += sizeof(_type); |
6db3d13b | 464 | |
f127e61e | 465 | #undef _ctf_array_encoded |
3834b99f | 466 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
a90917c3 | 467 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
0d1d4002 | 468 | __event_len += sizeof(_type) * (_length); |
6db3d13b | 469 | |
43803cf2 MD |
470 | #undef _ctf_array_bitfield |
471 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
3834b99f | 472 | _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite) |
43803cf2 | 473 | |
f127e61e MD |
474 | #undef _ctf_sequence_encoded |
475 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 476 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
477 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_length_type)); \ |
478 | __event_len += sizeof(_length_type); \ | |
a90917c3 | 479 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
114667d5 MD |
480 | { \ |
481 | size_t __seqlen = (_src_length); \ | |
482 | \ | |
483 | if (unlikely(++this_cpu_ptr(<tng_dynamic_len_stack)->offset >= LTTNG_DYNAMIC_LEN_STACK_SIZE)) \ | |
484 | goto error; \ | |
485 | barrier(); /* reserve before use. */ \ | |
486 | this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = __seqlen; \ | |
487 | __event_len += sizeof(_type) * __seqlen; \ | |
488 | } | |
6db3d13b | 489 | |
43803cf2 MD |
490 | #undef _ctf_sequence_bitfield |
491 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
492 | _length_type, _src_length, \ | |
493 | _user, _nowrite) \ | |
494 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
495 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
496 | ||
d0255731 | 497 | /* |
f127e61e | 498 | * ctf_user_string includes \0. If returns 0, it faulted, so we set size to |
786b8312 | 499 | * 1 (\0 only). |
d0255731 | 500 | */ |
f127e61e MD |
501 | #undef _ctf_string |
502 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
114667d5 MD |
503 | if (unlikely(++this_cpu_ptr(<tng_dynamic_len_stack)->offset >= LTTNG_DYNAMIC_LEN_STACK_SIZE)) \ |
504 | goto error; \ | |
505 | barrier(); /* reserve before use. */ \ | |
506 | if (_user) { \ | |
507 | __event_len += this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = \ | |
96d0248a | 508 | max_t(size_t, lttng_strlen_user_inatomic(_src), 1); \ |
114667d5 MD |
509 | } else { \ |
510 | __event_len += this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = \ | |
1d84e8e7 | 511 | strlen((_src) ? (_src) : __LTTNG_NULL_STRING) + 1; \ |
114667d5 | 512 | } |
c6e3f225 | 513 | |
141ddf28 MD |
514 | #undef _ctf_enum |
515 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
516 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
517 | ||
f64dd4be MD |
518 | #undef ctf_align |
519 | #define ctf_align(_type) \ | |
520 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); | |
521 | ||
522 | #undef ctf_custom_field | |
523 | #define ctf_custom_field(_type, _item, _code) \ | |
524 | { \ | |
525 | _code \ | |
526 | } | |
527 | ||
528 | #undef ctf_custom_code | |
529 | #define ctf_custom_code(...) __VA_ARGS__ | |
530 | ||
0d1d4002 | 531 | #undef TP_PROTO |
f127e61e | 532 | #define TP_PROTO(...) __VA_ARGS__ |
6db3d13b | 533 | |
f127e61e MD |
534 | #undef TP_FIELDS |
535 | #define TP_FIELDS(...) __VA_ARGS__ | |
6db3d13b | 536 | |
7ca580f8 MD |
537 | #undef TP_locvar |
538 | #define TP_locvar(...) __VA_ARGS__ | |
539 | ||
3bc29f0a | 540 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 541 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
114667d5 | 542 | static inline ssize_t __event_get_size__##_name(void *__tp_locvar, _proto) \ |
0d1d4002 MD |
543 | { \ |
544 | size_t __event_len = 0; \ | |
d3de7f14 | 545 | unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \ |
7ca580f8 | 546 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
d3de7f14 | 547 | \ |
f127e61e | 548 | _fields \ |
d3de7f14 | 549 | return __event_len; \ |
114667d5 MD |
550 | \ |
551 | error: \ | |
552 | __attribute__((unused)); \ | |
553 | return -1; \ | |
d3de7f14 MD |
554 | } |
555 | ||
3bc29f0a | 556 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 557 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
114667d5 | 558 | static inline ssize_t __event_get_size__##_name(void *__tp_locvar) \ |
d3de7f14 MD |
559 | { \ |
560 | size_t __event_len = 0; \ | |
561 | unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \ | |
7ca580f8 | 562 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
0d1d4002 | 563 | \ |
f127e61e | 564 | _fields \ |
0d1d4002 | 565 | return __event_len; \ |
114667d5 MD |
566 | \ |
567 | error: \ | |
568 | __attribute__((unused)); \ | |
569 | return -1; \ | |
6db3d13b | 570 | } |
40652b65 MD |
571 | |
572 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
573 | ||
f127e61e | 574 | |
40652b65 | 575 | /* |
f127e61e | 576 | * Stage 4.1 of tracepoint event generation. |
e763dbf5 | 577 | * |
f127e61e MD |
578 | * Create static inline function that layout the filter stack data. |
579 | * We make both write and nowrite data available to the filter. | |
e763dbf5 MD |
580 | */ |
581 | ||
f127e61e | 582 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 MD |
583 | #include <probes/lttng-events-reset.h> |
584 | #include <probes/lttng-events-write.h> | |
585 | #include <probes/lttng-events-nowrite.h> | |
f127e61e MD |
586 | |
587 | #undef _ctf_integer_ext_fetched | |
588 | #define _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
589 | if (lttng_is_signed_type(_type)) { \ | |
590 | int64_t __ctf_tmp_int64; \ | |
591 | switch (sizeof(_type)) { \ | |
592 | case 1: \ | |
593 | { \ | |
594 | union { _type t; int8_t v; } __tmp = { (_type) (_src) }; \ | |
595 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ | |
596 | break; \ | |
597 | } \ | |
598 | case 2: \ | |
599 | { \ | |
600 | union { _type t; int16_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
601 | if (_byte_order != __BYTE_ORDER) \ |
602 | __swab16s(&__tmp.v); \ | |
f127e61e MD |
603 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
604 | break; \ | |
605 | } \ | |
606 | case 4: \ | |
607 | { \ | |
608 | union { _type t; int32_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
609 | if (_byte_order != __BYTE_ORDER) \ |
610 | __swab32s(&__tmp.v); \ | |
f127e61e MD |
611 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
612 | break; \ | |
613 | } \ | |
614 | case 8: \ | |
615 | { \ | |
616 | union { _type t; int64_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
617 | if (_byte_order != __BYTE_ORDER) \ |
618 | __swab64s(&__tmp.v); \ | |
f127e61e MD |
619 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
620 | break; \ | |
621 | } \ | |
622 | default: \ | |
623 | BUG_ON(1); \ | |
624 | }; \ | |
625 | memcpy(__stack_data, &__ctf_tmp_int64, sizeof(int64_t)); \ | |
626 | } else { \ | |
627 | uint64_t __ctf_tmp_uint64; \ | |
628 | switch (sizeof(_type)) { \ | |
629 | case 1: \ | |
630 | { \ | |
631 | union { _type t; uint8_t v; } __tmp = { (_type) (_src) }; \ | |
632 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ | |
633 | break; \ | |
634 | } \ | |
635 | case 2: \ | |
636 | { \ | |
637 | union { _type t; uint16_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
638 | if (_byte_order != __BYTE_ORDER) \ |
639 | __swab16s(&__tmp.v); \ | |
f127e61e MD |
640 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
641 | break; \ | |
642 | } \ | |
643 | case 4: \ | |
644 | { \ | |
645 | union { _type t; uint32_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
646 | if (_byte_order != __BYTE_ORDER) \ |
647 | __swab32s(&__tmp.v); \ | |
f127e61e MD |
648 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
649 | break; \ | |
650 | } \ | |
651 | case 8: \ | |
652 | { \ | |
653 | union { _type t; uint64_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
654 | if (_byte_order != __BYTE_ORDER) \ |
655 | __swab64s(&__tmp.v); \ | |
f127e61e MD |
656 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
657 | break; \ | |
658 | } \ | |
659 | default: \ | |
660 | BUG_ON(1); \ | |
661 | }; \ | |
662 | memcpy(__stack_data, &__ctf_tmp_uint64, sizeof(uint64_t)); \ | |
663 | } \ | |
664 | __stack_data += sizeof(int64_t); | |
665 | ||
666 | #undef _ctf_integer_ext_isuser0 | |
667 | #define _ctf_integer_ext_isuser0(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
668 | _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) | |
669 | ||
670 | #undef _ctf_integer_ext_isuser1 | |
671 | #define _ctf_integer_ext_isuser1(_type, _item, _user_src, _byte_order, _base, _nowrite) \ | |
3c8ebbc8 MD |
672 | { \ |
673 | union { \ | |
674 | char __array[sizeof(_user_src)]; \ | |
675 | __typeof__(_user_src) __v; \ | |
676 | } __tmp_fetch; \ | |
677 | if (lib_ring_buffer_copy_from_user_check_nofault(__tmp_fetch.__array, \ | |
678 | &(_user_src), sizeof(_user_src))) \ | |
679 | memset(__tmp_fetch.__array, 0, sizeof(__tmp_fetch.__array)); \ | |
680 | _ctf_integer_ext_fetched(_type, _item, __tmp_fetch.__v, _byte_order, _base, _nowrite) \ | |
f127e61e | 681 | } |
e763dbf5 | 682 | |
f127e61e MD |
683 | #undef _ctf_integer_ext |
684 | #define _ctf_integer_ext(_type, _item, _user_src, _byte_order, _base, _user, _nowrite) \ | |
685 | _ctf_integer_ext_isuser##_user(_type, _item, _user_src, _byte_order, _base, _nowrite) | |
686 | ||
687 | #undef _ctf_array_encoded | |
3834b99f | 688 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
689 | { \ |
690 | unsigned long __ctf_tmp_ulong = (unsigned long) (_length); \ | |
691 | const void *__ctf_tmp_ptr = (_src); \ | |
692 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ | |
693 | __stack_data += sizeof(unsigned long); \ | |
6b272cda MD |
694 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
695 | __stack_data += sizeof(void *); \ | |
f127e61e MD |
696 | } |
697 | ||
43803cf2 MD |
698 | #undef _ctf_array_bitfield |
699 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
3834b99f | 700 | _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite) |
43803cf2 | 701 | |
f127e61e MD |
702 | #undef _ctf_sequence_encoded |
703 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 704 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
705 | { \ |
706 | unsigned long __ctf_tmp_ulong = (unsigned long) (_src_length); \ | |
707 | const void *__ctf_tmp_ptr = (_src); \ | |
708 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ | |
709 | __stack_data += sizeof(unsigned long); \ | |
6b272cda MD |
710 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
711 | __stack_data += sizeof(void *); \ | |
f127e61e MD |
712 | } |
713 | ||
43803cf2 MD |
714 | #undef _ctf_sequence_bitfield |
715 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
716 | _length_type, _src_length, \ | |
717 | _user, _nowrite) \ | |
718 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
719 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
720 | ||
f127e61e MD |
721 | #undef _ctf_string |
722 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
723 | { \ | |
1d84e8e7 MD |
724 | const void *__ctf_tmp_ptr = \ |
725 | ((_src) ? (_src) : __LTTNG_NULL_STRING); \ | |
6b272cda MD |
726 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
727 | __stack_data += sizeof(void *); \ | |
f127e61e | 728 | } |
c6e3f225 | 729 | |
141ddf28 MD |
730 | #undef _ctf_enum |
731 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
732 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
733 | ||
e763dbf5 | 734 | #undef TP_PROTO |
f127e61e | 735 | #define TP_PROTO(...) __VA_ARGS__ |
e763dbf5 | 736 | |
f127e61e MD |
737 | #undef TP_FIELDS |
738 | #define TP_FIELDS(...) __VA_ARGS__ | |
e763dbf5 | 739 | |
7ca580f8 MD |
740 | #undef TP_locvar |
741 | #define TP_locvar(...) __VA_ARGS__ | |
742 | ||
f127e61e | 743 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 744 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
745 | static inline \ |
746 | void __event_prepare_filter_stack__##_name(char *__stack_data, \ | |
747 | void *__tp_locvar) \ | |
e763dbf5 | 748 | { \ |
7ca580f8 MD |
749 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
750 | \ | |
f127e61e | 751 | _fields \ |
e763dbf5 MD |
752 | } |
753 | ||
f127e61e | 754 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 755 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
756 | static inline \ |
757 | void __event_prepare_filter_stack__##_name(char *__stack_data, \ | |
758 | void *__tp_locvar, _proto) \ | |
d3de7f14 | 759 | { \ |
7ca580f8 MD |
760 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
761 | \ | |
f127e61e | 762 | _fields \ |
d3de7f14 MD |
763 | } |
764 | ||
e763dbf5 MD |
765 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
766 | ||
e763dbf5 | 767 | /* |
f127e61e | 768 | * Stage 5 of the trace events. |
40652b65 | 769 | * |
f127e61e | 770 | * Create static inline function that calculates event payload alignment. |
3c4ffab9 MD |
771 | */ |
772 | ||
f127e61e | 773 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 MD |
774 | #include <probes/lttng-events-reset.h> |
775 | #include <probes/lttng-events-write.h> | |
3c4ffab9 | 776 | |
f127e61e MD |
777 | #undef _ctf_integer_ext |
778 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ | |
779 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
3c4ffab9 | 780 | |
f127e61e | 781 | #undef _ctf_array_encoded |
3834b99f | 782 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e | 783 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); |
3c4ffab9 | 784 | |
43803cf2 MD |
785 | #undef _ctf_array_bitfield |
786 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
3834b99f | 787 | _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite) |
43803cf2 | 788 | |
f127e61e MD |
789 | #undef _ctf_sequence_encoded |
790 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 791 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
792 | __event_align = max_t(size_t, __event_align, lttng_alignof(_length_type)); \ |
793 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
64c796d8 | 794 | |
43803cf2 MD |
795 | #undef _ctf_sequence_bitfield |
796 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
797 | _length_type, _src_length, \ | |
798 | _user, _nowrite) \ | |
799 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
800 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
801 | ||
f127e61e MD |
802 | #undef _ctf_string |
803 | #define _ctf_string(_item, _src, _user, _nowrite) | |
64c796d8 | 804 | |
141ddf28 MD |
805 | #undef _ctf_enum |
806 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
807 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
808 | ||
f64dd4be MD |
809 | #undef ctf_align |
810 | #define ctf_align(_type) \ | |
811 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
812 | ||
f127e61e MD |
813 | #undef TP_PROTO |
814 | #define TP_PROTO(...) __VA_ARGS__ | |
84da5206 | 815 | |
f127e61e MD |
816 | #undef TP_FIELDS |
817 | #define TP_FIELDS(...) __VA_ARGS__ | |
c6e3f225 | 818 | |
f127e61e MD |
819 | #undef TP_locvar |
820 | #define TP_locvar(...) __VA_ARGS__ | |
3c4ffab9 | 821 | |
f64dd4be MD |
822 | #undef ctf_custom_field |
823 | #define ctf_custom_field(_type, _item, _code) _code | |
824 | ||
825 | #undef ctf_custom_code | |
826 | #define ctf_custom_code(...) \ | |
827 | { \ | |
828 | __VA_ARGS__ \ | |
829 | } | |
830 | ||
f127e61e | 831 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 832 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
833 | static inline size_t __event_get_align__##_name(void *__tp_locvar, _proto) \ |
834 | { \ | |
835 | size_t __event_align = 1; \ | |
836 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ | |
837 | \ | |
838 | _fields \ | |
839 | return __event_align; \ | |
840 | } | |
3c4ffab9 | 841 | |
3bc29f0a | 842 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 843 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
844 | static inline size_t __event_get_align__##_name(void *__tp_locvar) \ |
845 | { \ | |
846 | size_t __event_align = 1; \ | |
847 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ | |
848 | \ | |
849 | _fields \ | |
850 | return __event_align; \ | |
851 | } | |
d3de7f14 | 852 | |
3c4ffab9 MD |
853 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
854 | ||
3c4ffab9 | 855 | /* |
f127e61e | 856 | * Stage 6 of tracepoint event generation. |
e763dbf5 | 857 | * |
f127e61e MD |
858 | * Create the probe function. This function calls event size calculation |
859 | * and writes event data into the buffer. | |
40652b65 MD |
860 | */ |
861 | ||
f127e61e | 862 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 MD |
863 | #include <probes/lttng-events-reset.h> |
864 | #include <probes/lttng-events-write.h> | |
c6e3f225 | 865 | |
f127e61e MD |
866 | #undef _ctf_integer_ext_fetched |
867 | #define _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
e763dbf5 | 868 | { \ |
f127e61e MD |
869 | _type __tmp = _src; \ |
870 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\ | |
aaa4004a | 871 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ |
f127e61e MD |
872 | } |
873 | ||
874 | #undef _ctf_integer_ext_isuser0 | |
875 | #define _ctf_integer_ext_isuser0(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
876 | _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) | |
877 | ||
878 | #undef _ctf_integer_ext_isuser1 | |
879 | #define _ctf_integer_ext_isuser1(_type, _item, _user_src, _byte_order, _base, _nowrite) \ | |
880 | { \ | |
3c8ebbc8 MD |
881 | union { \ |
882 | char __array[sizeof(_user_src)]; \ | |
883 | __typeof__(_user_src) __v; \ | |
884 | } __tmp_fetch; \ | |
885 | if (lib_ring_buffer_copy_from_user_check_nofault(__tmp_fetch.__array, \ | |
886 | &(_user_src), sizeof(_user_src))) \ | |
887 | memset(__tmp_fetch.__array, 0, sizeof(__tmp_fetch.__array)); \ | |
888 | _ctf_integer_ext_fetched(_type, _item, __tmp_fetch.__v, _byte_order, _base, _nowrite) \ | |
f127e61e MD |
889 | } |
890 | ||
891 | #undef _ctf_integer_ext | |
892 | #define _ctf_integer_ext(_type, _item, _user_src, _byte_order, _base, _user, _nowrite) \ | |
893 | _ctf_integer_ext_isuser##_user(_type, _item, _user_src, _byte_order, _base, _nowrite) | |
894 | ||
895 | #undef _ctf_array_encoded | |
3834b99f | 896 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
897 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ |
898 | if (_user) { \ | |
899 | __chan->ops->event_write_from_user(&__ctx, _src, sizeof(_type) * (_length)); \ | |
900 | } else { \ | |
901 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); \ | |
902 | } | |
903 | ||
43803cf2 MD |
904 | #if (__BYTE_ORDER == __LITTLE_ENDIAN) |
905 | #undef _ctf_array_bitfield | |
906 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
907 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
908 | if (_user) { \ | |
909 | __chan->ops->event_write_from_user(&__ctx, _src, sizeof(_type) * (_length)); \ | |
910 | } else { \ | |
911 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); \ | |
912 | } | |
913 | #else /* #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
914 | /* | |
915 | * For big endian, we need to byteswap into little endian. | |
916 | */ | |
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 | { \ | |
921 | size_t _i; \ | |
922 | \ | |
923 | for (_i = 0; _i < (_length); _i++) { \ | |
924 | _type _tmp; \ | |
925 | \ | |
926 | if (_user) { \ | |
927 | if (get_user(_tmp, (_type *) _src + _i)) \ | |
928 | _tmp = 0; \ | |
929 | } else { \ | |
930 | _tmp = ((_type *) _src)[_i]; \ | |
931 | } \ | |
932 | switch (sizeof(_type)) { \ | |
933 | case 1: \ | |
934 | break; \ | |
935 | case 2: \ | |
936 | _tmp = cpu_to_le16(_tmp); \ | |
937 | break; \ | |
938 | case 4: \ | |
939 | _tmp = cpu_to_le32(_tmp); \ | |
940 | break; \ | |
941 | case 8: \ | |
942 | _tmp = cpu_to_le64(_tmp); \ | |
943 | break; \ | |
944 | default: \ | |
945 | BUG_ON(1); \ | |
946 | } \ | |
947 | __chan->ops->event_write(&__ctx, &_tmp, sizeof(_type)); \ | |
948 | } \ | |
949 | } | |
950 | #endif /* #else #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
951 | ||
f127e61e MD |
952 | #undef _ctf_sequence_encoded |
953 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 954 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
84da5206 | 955 | { \ |
114667d5 | 956 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx]; \ |
f127e61e MD |
957 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
958 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
84da5206 | 959 | } \ |
f127e61e MD |
960 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ |
961 | if (_user) { \ | |
962 | __chan->ops->event_write_from_user(&__ctx, _src, \ | |
963 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
964 | } else { \ | |
965 | __chan->ops->event_write(&__ctx, _src, \ | |
966 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
967 | } | |
968 | ||
43803cf2 MD |
969 | #if (__BYTE_ORDER == __LITTLE_ENDIAN) |
970 | #undef _ctf_sequence_bitfield | |
971 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
972 | _length_type, _src_length, \ | |
973 | _user, _nowrite) \ | |
974 | { \ | |
114667d5 | 975 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx] * sizeof(_type) * CHAR_BIT; \ |
43803cf2 MD |
976 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
977 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
978 | } \ | |
979 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
980 | if (_user) { \ | |
981 | __chan->ops->event_write_from_user(&__ctx, _src, \ | |
982 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
983 | } else { \ | |
984 | __chan->ops->event_write(&__ctx, _src, \ | |
985 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
986 | } | |
987 | #else /* #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
988 | /* | |
989 | * For big endian, we need to byteswap into little endian. | |
990 | */ | |
991 | #undef _ctf_sequence_bitfield | |
992 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
993 | _length_type, _src_length, \ | |
994 | _user, _nowrite) \ | |
995 | { \ | |
114667d5 | 996 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx] * sizeof(_type) * CHAR_BIT; \ |
43803cf2 MD |
997 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
998 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
999 | } \ | |
1000 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
1001 | { \ | |
1002 | size_t _i, _length; \ | |
1003 | \ | |
1004 | _length = __get_dynamic_len(dest); \ | |
1005 | for (_i = 0; _i < _length; _i++) { \ | |
1006 | _type _tmp; \ | |
1007 | \ | |
1008 | if (_user) { \ | |
1009 | if (get_user(_tmp, (_type *) _src + _i)) \ | |
1010 | _tmp = 0; \ | |
1011 | } else { \ | |
1012 | _tmp = ((_type *) _src)[_i]; \ | |
1013 | } \ | |
1014 | switch (sizeof(_type)) { \ | |
1015 | case 1: \ | |
1016 | break; \ | |
1017 | case 2: \ | |
1018 | _tmp = cpu_to_le16(_tmp); \ | |
1019 | break; \ | |
1020 | case 4: \ | |
1021 | _tmp = cpu_to_le32(_tmp); \ | |
1022 | break; \ | |
1023 | case 8: \ | |
1024 | _tmp = cpu_to_le64(_tmp); \ | |
1025 | break; \ | |
1026 | default: \ | |
1027 | BUG_ON(1); \ | |
1028 | } \ | |
1029 | __chan->ops->event_write(&__ctx, &_tmp, sizeof(_type)); \ | |
1030 | } \ | |
1031 | } | |
1032 | #endif /* #else #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
1033 | ||
f127e61e MD |
1034 | #undef _ctf_string |
1035 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
f127e61e | 1036 | if (_user) { \ |
1d84e8e7 | 1037 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(*(_src))); \ |
f127e61e MD |
1038 | __chan->ops->event_strcpy_from_user(&__ctx, _src, \ |
1039 | __get_dynamic_len(dest)); \ | |
1040 | } else { \ | |
1d84e8e7 MD |
1041 | const char *__ctf_tmp_string = \ |
1042 | ((_src) ? (_src) : __LTTNG_NULL_STRING); \ | |
1043 | lib_ring_buffer_align_ctx(&__ctx, \ | |
1044 | lttng_alignof(*__ctf_tmp_string)); \ | |
1045 | __chan->ops->event_strcpy(&__ctx, __ctf_tmp_string, \ | |
f127e61e MD |
1046 | __get_dynamic_len(dest)); \ |
1047 | } | |
e763dbf5 | 1048 | |
141ddf28 MD |
1049 | #undef _ctf_enum |
1050 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
1051 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
f64dd4be MD |
1052 | |
1053 | #undef ctf_align | |
1054 | #define ctf_align(_type) \ | |
1055 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); | |
1056 | ||
1057 | #undef ctf_custom_field | |
1058 | #define ctf_custom_field(_type, _item, _code) _code | |
1059 | ||
1060 | #undef ctf_custom_code | |
1061 | #define ctf_custom_code(...) \ | |
1062 | { \ | |
1063 | __VA_ARGS__ \ | |
1064 | } | |
1065 | ||
e763dbf5 | 1066 | /* Beware: this get len actually consumes the len value */ |
f127e61e | 1067 | #undef __get_dynamic_len |
114667d5 | 1068 | #define __get_dynamic_len(field) this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx++] |
e763dbf5 MD |
1069 | |
1070 | #undef TP_PROTO | |
f127e61e | 1071 | #define TP_PROTO(...) __VA_ARGS__ |
e763dbf5 MD |
1072 | |
1073 | #undef TP_ARGS | |
f127e61e | 1074 | #define TP_ARGS(...) __VA_ARGS__ |
e763dbf5 | 1075 | |
f127e61e MD |
1076 | #undef TP_FIELDS |
1077 | #define TP_FIELDS(...) __VA_ARGS__ | |
e763dbf5 | 1078 | |
7ca580f8 MD |
1079 | #undef TP_locvar |
1080 | #define TP_locvar(...) __VA_ARGS__ | |
1081 | ||
265822ae MD |
1082 | #undef TP_code_pre |
1083 | #define TP_code_pre(...) __VA_ARGS__ | |
1084 | ||
1085 | #undef TP_code_post | |
1086 | #define TP_code_post(...) __VA_ARGS__ | |
7ca580f8 | 1087 | |
c337ddc2 MD |
1088 | /* |
1089 | * For state dump, check that "session" argument (mandatory) matches the | |
1090 | * session this event belongs to. Ensures that we write state dump data only | |
1091 | * into the started session, not into all sessions. | |
1092 | */ | |
1093 | #ifdef TP_SESSION_CHECK | |
1094 | #define _TP_SESSION_CHECK(session, csession) (session == csession) | |
1095 | #else /* TP_SESSION_CHECK */ | |
1096 | #define _TP_SESSION_CHECK(session, csession) 1 | |
1097 | #endif /* TP_SESSION_CHECK */ | |
1098 | ||
f9771d39 | 1099 | /* |
f127e61e MD |
1100 | * Using twice size for filter stack data to hold size and pointer for |
1101 | * each field (worse case). For integers, max size required is 64-bit. | |
1102 | * Same for double-precision floats. Those fit within | |
1103 | * 2*sizeof(unsigned long) for all supported architectures. | |
1104 | * Perform UNION (||) of filter runtime list. | |
f9771d39 | 1105 | */ |
3bc29f0a | 1106 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 1107 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
e763dbf5 MD |
1108 | static void __event_probe__##_name(void *__data, _proto) \ |
1109 | { \ | |
7ca580f8 | 1110 | struct probe_local_vars { _locvar }; \ |
a90917c3 | 1111 | struct lttng_event *__event = __data; \ |
79150a49 JD |
1112 | struct lttng_probe_ctx __lttng_probe_ctx = { \ |
1113 | .event = __event, \ | |
ccecf3fb | 1114 | .interruptible = !irqs_disabled(), \ |
79150a49 | 1115 | }; \ |
a90917c3 | 1116 | struct lttng_channel *__chan = __event->chan; \ |
e0130fab | 1117 | struct lttng_session *__session = __chan->session; \ |
aaa4004a | 1118 | struct lib_ring_buffer_ctx __ctx; \ |
114667d5 MD |
1119 | ssize_t __event_len; \ |
1120 | size_t __event_align; \ | |
ec0a7fba | 1121 | size_t __orig_dynamic_len_offset, __dynamic_len_idx __attribute__((unused)); \ |
f127e61e | 1122 | union { \ |
114667d5 | 1123 | size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)]; \ |
f127e61e MD |
1124 | char __filter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \ |
1125 | } __stackvar; \ | |
e763dbf5 | 1126 | int __ret; \ |
7ca580f8 MD |
1127 | struct probe_local_vars __tp_locvar; \ |
1128 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
1129 | &__tp_locvar; \ | |
e0130fab | 1130 | struct lttng_pid_tracker *__lpf; \ |
e763dbf5 | 1131 | \ |
e0130fab | 1132 | if (!_TP_SESSION_CHECK(session, __session)) \ |
c337ddc2 | 1133 | return; \ |
a8f2d0c7 | 1134 | if (unlikely(!READ_ONCE(__session->active))) \ |
e64957da | 1135 | return; \ |
a8f2d0c7 | 1136 | if (unlikely(!READ_ONCE(__chan->enabled))) \ |
e64957da | 1137 | return; \ |
a8f2d0c7 | 1138 | if (unlikely(!READ_ONCE(__event->enabled))) \ |
52fc2e1f | 1139 | return; \ |
7a09dcb7 | 1140 | __lpf = lttng_rcu_dereference(__session->pid_tracker); \ |
12d47027 | 1141 | if (__lpf && likely(!lttng_pid_tracker_lookup(__lpf, current->tgid))) \ |
e0130fab | 1142 | return; \ |
114667d5 MD |
1143 | __orig_dynamic_len_offset = this_cpu_ptr(<tng_dynamic_len_stack)->offset; \ |
1144 | __dynamic_len_idx = __orig_dynamic_len_offset; \ | |
265822ae | 1145 | _code_pre \ |
f127e61e MD |
1146 | if (unlikely(!list_empty(&__event->bytecode_runtime_head))) { \ |
1147 | struct lttng_bytecode_runtime *bc_runtime; \ | |
1148 | int __filter_record = __event->has_enablers_without_bytecode; \ | |
1149 | \ | |
1150 | __event_prepare_filter_stack__##_name(__stackvar.__filter_stack_data, \ | |
1151 | tp_locvar, _args); \ | |
7a09dcb7 | 1152 | lttng_list_for_each_entry_rcu(bc_runtime, &__event->bytecode_runtime_head, node) { \ |
79150a49 | 1153 | if (unlikely(bc_runtime->filter(bc_runtime, &__lttng_probe_ctx, \ |
f127e61e MD |
1154 | __stackvar.__filter_stack_data) & LTTNG_FILTER_RECORD_FLAG)) \ |
1155 | __filter_record = 1; \ | |
1156 | } \ | |
1157 | if (likely(!__filter_record)) \ | |
265822ae | 1158 | goto __post; \ |
f127e61e | 1159 | } \ |
114667d5 MD |
1160 | __event_len = __event_get_size__##_name(tp_locvar, _args); \ |
1161 | if (unlikely(__event_len < 0)) { \ | |
1162 | lib_ring_buffer_lost_event_too_big(__chan->chan); \ | |
1163 | goto __post; \ | |
1164 | } \ | |
7ca580f8 | 1165 | __event_align = __event_get_align__##_name(tp_locvar, _args); \ |
79150a49 | 1166 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, &__lttng_probe_ctx, __event_len, \ |
e763dbf5 | 1167 | __event_align, -1); \ |
aaa4004a | 1168 | __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ |
e763dbf5 | 1169 | if (__ret < 0) \ |
265822ae | 1170 | goto __post; \ |
f127e61e | 1171 | _fields \ |
aaa4004a | 1172 | __chan->ops->event_commit(&__ctx); \ |
265822ae MD |
1173 | __post: \ |
1174 | _code_post \ | |
114667d5 MD |
1175 | barrier(); /* use before un-reserve. */ \ |
1176 | this_cpu_ptr(<tng_dynamic_len_stack)->offset = __orig_dynamic_len_offset; \ | |
265822ae | 1177 | return; \ |
e763dbf5 MD |
1178 | } |
1179 | ||
3bc29f0a | 1180 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 1181 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f7bdf4db MD |
1182 | static void __event_probe__##_name(void *__data) \ |
1183 | { \ | |
7ca580f8 | 1184 | struct probe_local_vars { _locvar }; \ |
a90917c3 | 1185 | struct lttng_event *__event = __data; \ |
79150a49 JD |
1186 | struct lttng_probe_ctx __lttng_probe_ctx = { \ |
1187 | .event = __event, \ | |
ccecf3fb | 1188 | .interruptible = !irqs_disabled(), \ |
79150a49 | 1189 | }; \ |
a90917c3 | 1190 | struct lttng_channel *__chan = __event->chan; \ |
e0130fab | 1191 | struct lttng_session *__session = __chan->session; \ |
f7bdf4db | 1192 | struct lib_ring_buffer_ctx __ctx; \ |
114667d5 MD |
1193 | ssize_t __event_len; \ |
1194 | size_t __event_align; \ | |
ec0a7fba | 1195 | size_t __orig_dynamic_len_offset, __dynamic_len_idx __attribute__((unused)); \ |
f127e61e | 1196 | union { \ |
114667d5 | 1197 | size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)]; \ |
f127e61e MD |
1198 | char __filter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \ |
1199 | } __stackvar; \ | |
f7bdf4db | 1200 | int __ret; \ |
7ca580f8 MD |
1201 | struct probe_local_vars __tp_locvar; \ |
1202 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
1203 | &__tp_locvar; \ | |
e0130fab | 1204 | struct lttng_pid_tracker *__lpf; \ |
f7bdf4db | 1205 | \ |
e0130fab | 1206 | if (!_TP_SESSION_CHECK(session, __session)) \ |
c337ddc2 | 1207 | return; \ |
a8f2d0c7 | 1208 | if (unlikely(!READ_ONCE(__session->active))) \ |
f7bdf4db | 1209 | return; \ |
a8f2d0c7 | 1210 | if (unlikely(!READ_ONCE(__chan->enabled))) \ |
f7bdf4db | 1211 | return; \ |
a8f2d0c7 | 1212 | if (unlikely(!READ_ONCE(__event->enabled))) \ |
f7bdf4db | 1213 | return; \ |
7a09dcb7 | 1214 | __lpf = lttng_rcu_dereference(__session->pid_tracker); \ |
3980750d | 1215 | if (__lpf && likely(!lttng_pid_tracker_lookup(__lpf, current->tgid))) \ |
e0130fab | 1216 | return; \ |
114667d5 MD |
1217 | __orig_dynamic_len_offset = this_cpu_ptr(<tng_dynamic_len_stack)->offset; \ |
1218 | __dynamic_len_idx = __orig_dynamic_len_offset; \ | |
265822ae | 1219 | _code_pre \ |
f127e61e MD |
1220 | if (unlikely(!list_empty(&__event->bytecode_runtime_head))) { \ |
1221 | struct lttng_bytecode_runtime *bc_runtime; \ | |
1222 | int __filter_record = __event->has_enablers_without_bytecode; \ | |
1223 | \ | |
1224 | __event_prepare_filter_stack__##_name(__stackvar.__filter_stack_data, \ | |
1225 | tp_locvar); \ | |
7a09dcb7 | 1226 | lttng_list_for_each_entry_rcu(bc_runtime, &__event->bytecode_runtime_head, node) { \ |
79150a49 | 1227 | if (unlikely(bc_runtime->filter(bc_runtime, &__lttng_probe_ctx, \ |
f127e61e MD |
1228 | __stackvar.__filter_stack_data) & LTTNG_FILTER_RECORD_FLAG)) \ |
1229 | __filter_record = 1; \ | |
1230 | } \ | |
1231 | if (likely(!__filter_record)) \ | |
265822ae | 1232 | goto __post; \ |
f127e61e | 1233 | } \ |
114667d5 MD |
1234 | __event_len = __event_get_size__##_name(tp_locvar); \ |
1235 | if (unlikely(__event_len < 0)) { \ | |
1236 | lib_ring_buffer_lost_event_too_big(__chan->chan); \ | |
1237 | goto __post; \ | |
1238 | } \ | |
7ca580f8 | 1239 | __event_align = __event_get_align__##_name(tp_locvar); \ |
79150a49 | 1240 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, &__lttng_probe_ctx, __event_len, \ |
f7bdf4db MD |
1241 | __event_align, -1); \ |
1242 | __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ | |
1243 | if (__ret < 0) \ | |
265822ae | 1244 | goto __post; \ |
f127e61e | 1245 | _fields \ |
f7bdf4db | 1246 | __chan->ops->event_commit(&__ctx); \ |
265822ae MD |
1247 | __post: \ |
1248 | _code_post \ | |
114667d5 MD |
1249 | barrier(); /* use before un-reserve. */ \ |
1250 | this_cpu_ptr(<tng_dynamic_len_stack)->offset = __orig_dynamic_len_offset; \ | |
265822ae | 1251 | return; \ |
f7bdf4db MD |
1252 | } |
1253 | ||
e763dbf5 MD |
1254 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
1255 | ||
f127e61e MD |
1256 | #undef __get_dynamic_len |
1257 | ||
1258 | /* | |
1259 | * Stage 7 of the trace events. | |
1260 | * | |
1261 | * Create event descriptions. | |
1262 | */ | |
1263 | ||
1264 | /* Named field types must be defined in lttng-types.h */ | |
1265 | ||
ba012e22 | 1266 | #include <probes/lttng-events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
f127e61e MD |
1267 | |
1268 | #ifndef TP_PROBE_CB | |
1269 | #define TP_PROBE_CB(_template) &__event_probe__##_template | |
1270 | #endif | |
1271 | ||
1272 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
1273 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
1274 | static const struct lttng_event_desc __event_desc___##_map = { \ | |
1275 | .fields = __event_fields___##_template, \ | |
1276 | .name = #_map, \ | |
1277 | .kname = #_name, \ | |
1278 | .probe_callback = (void *) TP_PROBE_CB(_template), \ | |
1279 | .nr_fields = ARRAY_SIZE(__event_fields___##_template), \ | |
1280 | .owner = THIS_MODULE, \ | |
1281 | }; | |
1282 | ||
1283 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
1284 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
1285 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) | |
1286 | ||
1287 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
1288 | ||
1289 | /* | |
1290 | * Stage 8 of the trace events. | |
1291 | * | |
1292 | * Create an array of event description pointers. | |
1293 | */ | |
1294 | ||
ba012e22 | 1295 | #include <probes/lttng-events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
f127e61e MD |
1296 | |
1297 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
1298 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
1299 | &__event_desc___##_map, | |
1300 | ||
1301 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
1302 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
1303 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) | |
1304 | ||
1305 | #define TP_ID1(_token, _system) _token##_system | |
1306 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1307 | ||
1308 | static const struct lttng_event_desc *TP_ID(__event_desc___, TRACE_SYSTEM)[] = { | |
1309 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
1310 | }; | |
1311 | ||
1312 | #undef TP_ID1 | |
1313 | #undef TP_ID | |
1314 | ||
1315 | /* | |
1316 | * Stage 9 of the trace events. | |
1317 | * | |
1318 | * Create a toplevel descriptor for the whole probe. | |
1319 | */ | |
1320 | ||
1321 | #define TP_ID1(_token, _system) _token##_system | |
1322 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1323 | ||
1324 | /* non-const because list head will be modified when registered. */ | |
1325 | static __used struct lttng_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = { | |
1326 | .provider = __stringify(TRACE_SYSTEM), | |
1327 | .event_desc = TP_ID(__event_desc___, TRACE_SYSTEM), | |
1328 | .nr_events = ARRAY_SIZE(TP_ID(__event_desc___, TRACE_SYSTEM)), | |
1329 | .head = { NULL, NULL }, | |
1330 | .lazy_init_head = { NULL, NULL }, | |
1331 | .lazy = 0, | |
1332 | }; | |
1333 | ||
1334 | #undef TP_ID1 | |
1335 | #undef TP_ID | |
1336 | ||
3afe7aac | 1337 | /* |
c099397a | 1338 | * Stage 10 of the trace events. |
3afe7aac MD |
1339 | * |
1340 | * Register/unregister probes at module load/unload. | |
1341 | */ | |
1342 | ||
ba012e22 | 1343 | #include <probes/lttng-events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
3afe7aac MD |
1344 | |
1345 | #define TP_ID1(_token, _system) _token##_system | |
1346 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1347 | #define module_init_eval1(_token, _system) module_init(_token##_system) | |
1348 | #define module_init_eval(_token, _system) module_init_eval1(_token, _system) | |
1349 | #define module_exit_eval1(_token, _system) module_exit(_token##_system) | |
1350 | #define module_exit_eval(_token, _system) module_exit_eval1(_token, _system) | |
1351 | ||
2655f9ad | 1352 | #ifndef TP_MODULE_NOINIT |
3afe7aac MD |
1353 | static int TP_ID(__lttng_events_init__, TRACE_SYSTEM)(void) |
1354 | { | |
6d2a620c | 1355 | wrapper_vmalloc_sync_all(); |
a90917c3 | 1356 | return lttng_probe_register(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
1357 | } |
1358 | ||
3afe7aac MD |
1359 | static void TP_ID(__lttng_events_exit__, TRACE_SYSTEM)(void) |
1360 | { | |
a90917c3 | 1361 | lttng_probe_unregister(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
1362 | } |
1363 | ||
2655f9ad MD |
1364 | #ifndef TP_MODULE_NOAUTOLOAD |
1365 | module_init_eval(__lttng_events_init__, TRACE_SYSTEM); | |
3afe7aac | 1366 | module_exit_eval(__lttng_events_exit__, TRACE_SYSTEM); |
259b6cb3 | 1367 | #endif |
3afe7aac | 1368 | |
2655f9ad MD |
1369 | #endif |
1370 | ||
3afe7aac MD |
1371 | #undef module_init_eval |
1372 | #undef module_exit_eval | |
1373 | #undef TP_ID1 | |
1374 | #undef TP_ID | |
177b3692 MD |
1375 | |
1376 | #undef TP_PROTO | |
1377 | #undef TP_ARGS |