Commit | Line | Data |
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b7cdc182 | 1 | /* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only) |
9f36eaed | 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> | |
8d43abb7 | 18 | #include <wrapper/ringbuffer/frontend_types.h> |
3c8ebbc8 | 19 | #include <wrapper/ringbuffer/backend.h> |
8d43abb7 | 20 | #include <wrapper/rcu.h> |
608416e1 | 21 | #include <wrapper/user_namespace.h> |
8d43abb7 MD |
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, \ | |
ceabb767 | 259 | .type = __type_integer(_type, 0, 0, -1, _byte_order, _base, none), \ |
f127e61e MD |
260 | .nowrite = _nowrite, \ |
261 | .user = _user, \ | |
ceabb767 | 262 | .nofilter = 0, \ |
c099397a | 263 | }, |
40652b65 | 264 | |
f127e61e | 265 | #undef _ctf_array_encoded |
ceabb767 MD |
266 | #define _ctf_array_encoded(_type, _item, _src, _length, \ |
267 | _encoding, _byte_order, _elem_type_base, _user, _nowrite) \ | |
299338c8 | 268 | { \ |
c099397a MD |
269 | .name = #_item, \ |
270 | .type = \ | |
271 | { \ | |
ceabb767 | 272 | .atype = atype_array_nestable, \ |
f127e61e | 273 | .u = \ |
c099397a | 274 | { \ |
ceabb767 | 275 | .array_nestable = \ |
f127e61e | 276 | { \ |
ceabb767 MD |
277 | .elem_type = __LTTNG_COMPOUND_LITERAL(struct lttng_type, \ |
278 | __type_integer(_type, 0, 0, -1, _byte_order, _elem_type_base, _encoding)), \ | |
f127e61e | 279 | .length = _length, \ |
ceabb767 | 280 | .alignment = 0, \ |
f127e61e MD |
281 | } \ |
282 | } \ | |
299338c8 | 283 | }, \ |
f127e61e MD |
284 | .nowrite = _nowrite, \ |
285 | .user = _user, \ | |
ceabb767 | 286 | .nofilter = 0, \ |
299338c8 | 287 | }, |
40652b65 | 288 | |
43803cf2 MD |
289 | #undef _ctf_array_bitfield |
290 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
291 | { \ | |
292 | .name = #_item, \ | |
293 | .type = \ | |
294 | { \ | |
ceabb767 | 295 | .atype = atype_array_nestable, \ |
43803cf2 MD |
296 | .u = \ |
297 | { \ | |
ceabb767 | 298 | .array_nestable = \ |
43803cf2 | 299 | { \ |
ceabb767 MD |
300 | .elem_type = __LTTNG_COMPOUND_LITERAL(struct lttng_type, \ |
301 | __type_integer(_type, 1, 1, 0, __LITTLE_ENDIAN, 10, none)), \ | |
43803cf2 | 302 | .length = (_length) * sizeof(_type) * CHAR_BIT, \ |
ceabb767 | 303 | .alignment = lttng_alignof(_type), \ |
43803cf2 MD |
304 | } \ |
305 | } \ | |
306 | }, \ | |
307 | .nowrite = _nowrite, \ | |
308 | .user = _user, \ | |
ceabb767 | 309 | .nofilter = 0, \ |
43803cf2 MD |
310 | }, |
311 | ||
312 | ||
f127e61e MD |
313 | #undef _ctf_sequence_encoded |
314 | #define _ctf_sequence_encoded(_type, _item, _src, \ | |
315 | _length_type, _src_length, _encoding, \ | |
ceabb767 MD |
316 | _byte_order, _elem_type_base, _user, _nowrite) \ |
317 | { \ | |
318 | .name = "_" #_item "_length", \ | |
319 | .type = __type_integer(_length_type, 0, 0, -1, __BYTE_ORDER, 10, none), \ | |
320 | .nowrite = _nowrite, \ | |
321 | .nofilter = 1, \ | |
322 | }, \ | |
299338c8 | 323 | { \ |
c099397a MD |
324 | .name = #_item, \ |
325 | .type = \ | |
326 | { \ | |
ceabb767 | 327 | .atype = atype_sequence_nestable, \ |
f127e61e | 328 | .u = \ |
c099397a | 329 | { \ |
ceabb767 | 330 | .sequence_nestable = \ |
f127e61e | 331 | { \ |
ceabb767 MD |
332 | .length_name = "_" #_item "_length", \ |
333 | .elem_type = __LTTNG_COMPOUND_LITERAL(struct lttng_type, \ | |
334 | __type_integer(_type, 0, 0, -1, _byte_order, _elem_type_base, _encoding)), \ | |
335 | .alignment = 0, \ | |
43803cf2 MD |
336 | }, \ |
337 | }, \ | |
338 | }, \ | |
339 | .nowrite = _nowrite, \ | |
340 | .user = _user, \ | |
ceabb767 | 341 | .nofilter = 0, \ |
43803cf2 MD |
342 | }, |
343 | ||
344 | #undef _ctf_sequence_bitfield | |
345 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
346 | _length_type, _src_length, \ | |
347 | _user, _nowrite) \ | |
ceabb767 MD |
348 | { \ |
349 | .name = "_" #_item "_length", \ | |
350 | .type = __type_integer(_length_type, 0, 0, -1, __BYTE_ORDER, 10, none), \ | |
351 | .nowrite = _nowrite, \ | |
352 | .nofilter = 1, \ | |
353 | }, \ | |
43803cf2 MD |
354 | { \ |
355 | .name = #_item, \ | |
356 | .type = \ | |
357 | { \ | |
ceabb767 | 358 | .atype = atype_sequence_nestable, \ |
43803cf2 MD |
359 | .u = \ |
360 | { \ | |
ceabb767 | 361 | .sequence_nestable = \ |
43803cf2 | 362 | { \ |
ceabb767 MD |
363 | .length_name = "_" #_item "_length", \ |
364 | .elem_type = __LTTNG_COMPOUND_LITERAL(struct lttng_type, \ | |
365 | __type_integer(_type, 1, 1, 0, __LITTLE_ENDIAN, 10, none)), \ | |
366 | .alignment = lttng_alignof(_type), \ | |
f127e61e | 367 | }, \ |
c099397a | 368 | }, \ |
299338c8 | 369 | }, \ |
f127e61e MD |
370 | .nowrite = _nowrite, \ |
371 | .user = _user, \ | |
ceabb767 | 372 | .nofilter = 0, \ |
299338c8 | 373 | }, |
40652b65 | 374 | |
f127e61e MD |
375 | #undef _ctf_string |
376 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
299338c8 | 377 | { \ |
c099397a MD |
378 | .name = #_item, \ |
379 | .type = \ | |
380 | { \ | |
299338c8 | 381 | .atype = atype_string, \ |
f127e61e MD |
382 | .u = \ |
383 | { \ | |
ceabb767 | 384 | .string = { .encoding = lttng_encode_UTF8 }, \ |
f127e61e | 385 | }, \ |
299338c8 | 386 | }, \ |
f127e61e MD |
387 | .nowrite = _nowrite, \ |
388 | .user = _user, \ | |
ceabb767 | 389 | .nofilter = 0, \ |
299338c8 | 390 | }, |
1d12cebd | 391 | |
141ddf28 MD |
392 | #undef _ctf_enum |
393 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
394 | { \ | |
395 | .name = #_item, \ | |
396 | .type = { \ | |
ceabb767 | 397 | .atype = atype_enum_nestable, \ |
141ddf28 | 398 | .u = { \ |
ceabb767 MD |
399 | .enum_nestable = { \ |
400 | .desc = &__enum_##_name, \ | |
401 | .container_type = __LTTNG_COMPOUND_LITERAL(struct lttng_type, \ | |
402 | __type_integer(_type, 0, 0, -1, __BYTE_ORDER, 10, none)), \ | |
403 | }, \ | |
141ddf28 MD |
404 | }, \ |
405 | }, \ | |
406 | .nowrite = _nowrite, \ | |
407 | .user = _user, \ | |
ceabb767 | 408 | .nofilter = 0, \ |
141ddf28 | 409 | }, |
f64dd4be MD |
410 | |
411 | #undef ctf_custom_field | |
412 | #define ctf_custom_field(_type, _item, _code) \ | |
413 | { \ | |
414 | .name = #_item, \ | |
ceabb767 | 415 | .type = _type, \ |
f64dd4be MD |
416 | .nowrite = 0, \ |
417 | .user = 0, \ | |
ceabb767 | 418 | .nofilter = 1, \ |
f64dd4be MD |
419 | }, |
420 | ||
421 | #undef ctf_custom_type | |
422 | #define ctf_custom_type(...) __VA_ARGS__ | |
423 | ||
f127e61e MD |
424 | #undef TP_FIELDS |
425 | #define TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */ | |
1d12cebd | 426 | |
3bc29f0a | 427 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 428 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
0d1d4002 | 429 | static const struct lttng_event_field __event_fields___##_name[] = { \ |
f127e61e | 430 | _fields \ |
299338c8 MD |
431 | }; |
432 | ||
3bc29f0a | 433 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae MD |
434 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
435 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, PARAMS(_fields), _code_post) | |
f7bdf4db | 436 | |
141ddf28 MD |
437 | #undef LTTNG_TRACEPOINT_ENUM |
438 | #define LTTNG_TRACEPOINT_ENUM(_name, _values) \ | |
439 | static const struct lttng_enum_desc __enum_##_name = { \ | |
440 | .name = #_name, \ | |
441 | .entries = __enum_values__##_name, \ | |
442 | .nr_entries = ARRAY_SIZE(__enum_values__##_name), \ | |
443 | }; | |
444 | ||
299338c8 MD |
445 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
446 | ||
19c57fbf | 447 | /* |
c099397a | 448 | * Stage 3 of the trace events. |
19c57fbf MD |
449 | * |
450 | * Create probe callback prototypes. | |
451 | */ | |
452 | ||
f127e61e | 453 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 | 454 | #include <probes/lttng-events-reset.h> |
19c57fbf MD |
455 | |
456 | #undef TP_PROTO | |
f127e61e | 457 | #define TP_PROTO(...) __VA_ARGS__ |
19c57fbf | 458 | |
3bc29f0a | 459 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 460 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
19c57fbf MD |
461 | static void __event_probe__##_name(void *__data, _proto); |
462 | ||
3bc29f0a | 463 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 464 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f7bdf4db MD |
465 | static void __event_probe__##_name(void *__data); |
466 | ||
19c57fbf MD |
467 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
468 | ||
f7bdf4db MD |
469 | /* |
470 | * Stage 4 of the trace events. | |
471 | * | |
40652b65 MD |
472 | * Create static inline function that calculates event size. |
473 | */ | |
474 | ||
f127e61e | 475 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 MD |
476 | #include <probes/lttng-events-reset.h> |
477 | #include <probes/lttng-events-write.h> | |
6db3d13b | 478 | |
f127e61e MD |
479 | #undef _ctf_integer_ext |
480 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ | |
a90917c3 | 481 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
0d1d4002 | 482 | __event_len += sizeof(_type); |
6db3d13b | 483 | |
f127e61e | 484 | #undef _ctf_array_encoded |
3834b99f | 485 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
a90917c3 | 486 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
0d1d4002 | 487 | __event_len += sizeof(_type) * (_length); |
6db3d13b | 488 | |
43803cf2 MD |
489 | #undef _ctf_array_bitfield |
490 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
3834b99f | 491 | _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite) |
43803cf2 | 492 | |
f127e61e MD |
493 | #undef _ctf_sequence_encoded |
494 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 495 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
496 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_length_type)); \ |
497 | __event_len += sizeof(_length_type); \ | |
a90917c3 | 498 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
114667d5 MD |
499 | { \ |
500 | size_t __seqlen = (_src_length); \ | |
501 | \ | |
502 | if (unlikely(++this_cpu_ptr(<tng_dynamic_len_stack)->offset >= LTTNG_DYNAMIC_LEN_STACK_SIZE)) \ | |
503 | goto error; \ | |
504 | barrier(); /* reserve before use. */ \ | |
505 | this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = __seqlen; \ | |
506 | __event_len += sizeof(_type) * __seqlen; \ | |
507 | } | |
6db3d13b | 508 | |
43803cf2 MD |
509 | #undef _ctf_sequence_bitfield |
510 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
511 | _length_type, _src_length, \ | |
512 | _user, _nowrite) \ | |
513 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
514 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
515 | ||
d0255731 | 516 | /* |
f127e61e | 517 | * ctf_user_string includes \0. If returns 0, it faulted, so we set size to |
786b8312 | 518 | * 1 (\0 only). |
d0255731 | 519 | */ |
f127e61e MD |
520 | #undef _ctf_string |
521 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
114667d5 MD |
522 | if (unlikely(++this_cpu_ptr(<tng_dynamic_len_stack)->offset >= LTTNG_DYNAMIC_LEN_STACK_SIZE)) \ |
523 | goto error; \ | |
524 | barrier(); /* reserve before use. */ \ | |
525 | if (_user) { \ | |
526 | __event_len += this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = \ | |
96d0248a | 527 | max_t(size_t, lttng_strlen_user_inatomic(_src), 1); \ |
114667d5 MD |
528 | } else { \ |
529 | __event_len += this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = \ | |
1d84e8e7 | 530 | strlen((_src) ? (_src) : __LTTNG_NULL_STRING) + 1; \ |
114667d5 | 531 | } |
c6e3f225 | 532 | |
141ddf28 MD |
533 | #undef _ctf_enum |
534 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
535 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
536 | ||
f64dd4be MD |
537 | #undef ctf_align |
538 | #define ctf_align(_type) \ | |
539 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); | |
540 | ||
541 | #undef ctf_custom_field | |
542 | #define ctf_custom_field(_type, _item, _code) \ | |
543 | { \ | |
544 | _code \ | |
545 | } | |
546 | ||
547 | #undef ctf_custom_code | |
548 | #define ctf_custom_code(...) __VA_ARGS__ | |
549 | ||
0d1d4002 | 550 | #undef TP_PROTO |
f127e61e | 551 | #define TP_PROTO(...) __VA_ARGS__ |
6db3d13b | 552 | |
f127e61e MD |
553 | #undef TP_FIELDS |
554 | #define TP_FIELDS(...) __VA_ARGS__ | |
6db3d13b | 555 | |
7ca580f8 MD |
556 | #undef TP_locvar |
557 | #define TP_locvar(...) __VA_ARGS__ | |
558 | ||
3bc29f0a | 559 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 560 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
114667d5 | 561 | static inline ssize_t __event_get_size__##_name(void *__tp_locvar, _proto) \ |
0d1d4002 MD |
562 | { \ |
563 | size_t __event_len = 0; \ | |
d3de7f14 | 564 | unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \ |
7ca580f8 | 565 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
d3de7f14 | 566 | \ |
f127e61e | 567 | _fields \ |
d3de7f14 | 568 | return __event_len; \ |
114667d5 MD |
569 | \ |
570 | error: \ | |
571 | __attribute__((unused)); \ | |
572 | return -1; \ | |
d3de7f14 MD |
573 | } |
574 | ||
3bc29f0a | 575 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 576 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
114667d5 | 577 | static inline ssize_t __event_get_size__##_name(void *__tp_locvar) \ |
d3de7f14 MD |
578 | { \ |
579 | size_t __event_len = 0; \ | |
580 | unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \ | |
7ca580f8 | 581 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
0d1d4002 | 582 | \ |
f127e61e | 583 | _fields \ |
0d1d4002 | 584 | return __event_len; \ |
114667d5 MD |
585 | \ |
586 | error: \ | |
587 | __attribute__((unused)); \ | |
588 | return -1; \ | |
6db3d13b | 589 | } |
40652b65 MD |
590 | |
591 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
592 | ||
f127e61e | 593 | |
40652b65 | 594 | /* |
f127e61e | 595 | * Stage 4.1 of tracepoint event generation. |
e763dbf5 | 596 | * |
f127e61e MD |
597 | * Create static inline function that layout the filter stack data. |
598 | * We make both write and nowrite data available to the filter. | |
e763dbf5 MD |
599 | */ |
600 | ||
f127e61e | 601 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 MD |
602 | #include <probes/lttng-events-reset.h> |
603 | #include <probes/lttng-events-write.h> | |
604 | #include <probes/lttng-events-nowrite.h> | |
f127e61e MD |
605 | |
606 | #undef _ctf_integer_ext_fetched | |
607 | #define _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
608 | if (lttng_is_signed_type(_type)) { \ | |
609 | int64_t __ctf_tmp_int64; \ | |
610 | switch (sizeof(_type)) { \ | |
611 | case 1: \ | |
612 | { \ | |
613 | union { _type t; int8_t v; } __tmp = { (_type) (_src) }; \ | |
614 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ | |
615 | break; \ | |
616 | } \ | |
617 | case 2: \ | |
618 | { \ | |
619 | union { _type t; int16_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
620 | if (_byte_order != __BYTE_ORDER) \ |
621 | __swab16s(&__tmp.v); \ | |
f127e61e MD |
622 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
623 | break; \ | |
624 | } \ | |
625 | case 4: \ | |
626 | { \ | |
627 | union { _type t; int32_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
628 | if (_byte_order != __BYTE_ORDER) \ |
629 | __swab32s(&__tmp.v); \ | |
f127e61e MD |
630 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
631 | break; \ | |
632 | } \ | |
633 | case 8: \ | |
634 | { \ | |
635 | union { _type t; int64_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
636 | if (_byte_order != __BYTE_ORDER) \ |
637 | __swab64s(&__tmp.v); \ | |
f127e61e MD |
638 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
639 | break; \ | |
640 | } \ | |
641 | default: \ | |
642 | BUG_ON(1); \ | |
643 | }; \ | |
644 | memcpy(__stack_data, &__ctf_tmp_int64, sizeof(int64_t)); \ | |
645 | } else { \ | |
646 | uint64_t __ctf_tmp_uint64; \ | |
647 | switch (sizeof(_type)) { \ | |
648 | case 1: \ | |
649 | { \ | |
650 | union { _type t; uint8_t v; } __tmp = { (_type) (_src) }; \ | |
651 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ | |
652 | break; \ | |
653 | } \ | |
654 | case 2: \ | |
655 | { \ | |
656 | union { _type t; uint16_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
657 | if (_byte_order != __BYTE_ORDER) \ |
658 | __swab16s(&__tmp.v); \ | |
f127e61e MD |
659 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
660 | break; \ | |
661 | } \ | |
662 | case 4: \ | |
663 | { \ | |
664 | union { _type t; uint32_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
665 | if (_byte_order != __BYTE_ORDER) \ |
666 | __swab32s(&__tmp.v); \ | |
f127e61e MD |
667 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
668 | break; \ | |
669 | } \ | |
670 | case 8: \ | |
671 | { \ | |
672 | union { _type t; uint64_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
673 | if (_byte_order != __BYTE_ORDER) \ |
674 | __swab64s(&__tmp.v); \ | |
f127e61e MD |
675 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
676 | break; \ | |
677 | } \ | |
678 | default: \ | |
679 | BUG_ON(1); \ | |
680 | }; \ | |
681 | memcpy(__stack_data, &__ctf_tmp_uint64, sizeof(uint64_t)); \ | |
682 | } \ | |
683 | __stack_data += sizeof(int64_t); | |
684 | ||
685 | #undef _ctf_integer_ext_isuser0 | |
686 | #define _ctf_integer_ext_isuser0(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
687 | _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) | |
688 | ||
689 | #undef _ctf_integer_ext_isuser1 | |
690 | #define _ctf_integer_ext_isuser1(_type, _item, _user_src, _byte_order, _base, _nowrite) \ | |
3c8ebbc8 MD |
691 | { \ |
692 | union { \ | |
693 | char __array[sizeof(_user_src)]; \ | |
694 | __typeof__(_user_src) __v; \ | |
695 | } __tmp_fetch; \ | |
696 | if (lib_ring_buffer_copy_from_user_check_nofault(__tmp_fetch.__array, \ | |
697 | &(_user_src), sizeof(_user_src))) \ | |
698 | memset(__tmp_fetch.__array, 0, sizeof(__tmp_fetch.__array)); \ | |
699 | _ctf_integer_ext_fetched(_type, _item, __tmp_fetch.__v, _byte_order, _base, _nowrite) \ | |
f127e61e | 700 | } |
e763dbf5 | 701 | |
f127e61e MD |
702 | #undef _ctf_integer_ext |
703 | #define _ctf_integer_ext(_type, _item, _user_src, _byte_order, _base, _user, _nowrite) \ | |
704 | _ctf_integer_ext_isuser##_user(_type, _item, _user_src, _byte_order, _base, _nowrite) | |
705 | ||
706 | #undef _ctf_array_encoded | |
3834b99f | 707 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
708 | { \ |
709 | unsigned long __ctf_tmp_ulong = (unsigned long) (_length); \ | |
710 | const void *__ctf_tmp_ptr = (_src); \ | |
711 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ | |
712 | __stack_data += sizeof(unsigned long); \ | |
6b272cda MD |
713 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
714 | __stack_data += sizeof(void *); \ | |
f127e61e MD |
715 | } |
716 | ||
43803cf2 MD |
717 | #undef _ctf_array_bitfield |
718 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
3834b99f | 719 | _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite) |
43803cf2 | 720 | |
f127e61e MD |
721 | #undef _ctf_sequence_encoded |
722 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 723 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
724 | { \ |
725 | unsigned long __ctf_tmp_ulong = (unsigned long) (_src_length); \ | |
726 | const void *__ctf_tmp_ptr = (_src); \ | |
727 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ | |
728 | __stack_data += sizeof(unsigned long); \ | |
6b272cda MD |
729 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
730 | __stack_data += sizeof(void *); \ | |
f127e61e MD |
731 | } |
732 | ||
43803cf2 MD |
733 | #undef _ctf_sequence_bitfield |
734 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
735 | _length_type, _src_length, \ | |
736 | _user, _nowrite) \ | |
737 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
738 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
739 | ||
f127e61e MD |
740 | #undef _ctf_string |
741 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
742 | { \ | |
1d84e8e7 MD |
743 | const void *__ctf_tmp_ptr = \ |
744 | ((_src) ? (_src) : __LTTNG_NULL_STRING); \ | |
6b272cda MD |
745 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
746 | __stack_data += sizeof(void *); \ | |
f127e61e | 747 | } |
c6e3f225 | 748 | |
141ddf28 MD |
749 | #undef _ctf_enum |
750 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
751 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
752 | ||
e763dbf5 | 753 | #undef TP_PROTO |
f127e61e | 754 | #define TP_PROTO(...) __VA_ARGS__ |
e763dbf5 | 755 | |
f127e61e MD |
756 | #undef TP_FIELDS |
757 | #define TP_FIELDS(...) __VA_ARGS__ | |
e763dbf5 | 758 | |
7ca580f8 MD |
759 | #undef TP_locvar |
760 | #define TP_locvar(...) __VA_ARGS__ | |
761 | ||
f127e61e | 762 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 763 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
764 | static inline \ |
765 | void __event_prepare_filter_stack__##_name(char *__stack_data, \ | |
766 | void *__tp_locvar) \ | |
e763dbf5 | 767 | { \ |
7ca580f8 MD |
768 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
769 | \ | |
f127e61e | 770 | _fields \ |
e763dbf5 MD |
771 | } |
772 | ||
f127e61e | 773 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 774 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
775 | static inline \ |
776 | void __event_prepare_filter_stack__##_name(char *__stack_data, \ | |
777 | void *__tp_locvar, _proto) \ | |
d3de7f14 | 778 | { \ |
7ca580f8 MD |
779 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
780 | \ | |
f127e61e | 781 | _fields \ |
d3de7f14 MD |
782 | } |
783 | ||
e763dbf5 MD |
784 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
785 | ||
e763dbf5 | 786 | /* |
f127e61e | 787 | * Stage 5 of the trace events. |
40652b65 | 788 | * |
f127e61e | 789 | * Create static inline function that calculates event payload alignment. |
3c4ffab9 MD |
790 | */ |
791 | ||
f127e61e | 792 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 MD |
793 | #include <probes/lttng-events-reset.h> |
794 | #include <probes/lttng-events-write.h> | |
3c4ffab9 | 795 | |
f127e61e MD |
796 | #undef _ctf_integer_ext |
797 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ | |
798 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
3c4ffab9 | 799 | |
f127e61e | 800 | #undef _ctf_array_encoded |
3834b99f | 801 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e | 802 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); |
3c4ffab9 | 803 | |
43803cf2 MD |
804 | #undef _ctf_array_bitfield |
805 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
3834b99f | 806 | _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite) |
43803cf2 | 807 | |
f127e61e MD |
808 | #undef _ctf_sequence_encoded |
809 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 810 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
811 | __event_align = max_t(size_t, __event_align, lttng_alignof(_length_type)); \ |
812 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
64c796d8 | 813 | |
43803cf2 MD |
814 | #undef _ctf_sequence_bitfield |
815 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
816 | _length_type, _src_length, \ | |
817 | _user, _nowrite) \ | |
818 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
819 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
820 | ||
f127e61e MD |
821 | #undef _ctf_string |
822 | #define _ctf_string(_item, _src, _user, _nowrite) | |
64c796d8 | 823 | |
141ddf28 MD |
824 | #undef _ctf_enum |
825 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
826 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
827 | ||
f64dd4be MD |
828 | #undef ctf_align |
829 | #define ctf_align(_type) \ | |
830 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
831 | ||
f127e61e MD |
832 | #undef TP_PROTO |
833 | #define TP_PROTO(...) __VA_ARGS__ | |
84da5206 | 834 | |
f127e61e MD |
835 | #undef TP_FIELDS |
836 | #define TP_FIELDS(...) __VA_ARGS__ | |
c6e3f225 | 837 | |
f127e61e MD |
838 | #undef TP_locvar |
839 | #define TP_locvar(...) __VA_ARGS__ | |
3c4ffab9 | 840 | |
f64dd4be MD |
841 | #undef ctf_custom_field |
842 | #define ctf_custom_field(_type, _item, _code) _code | |
843 | ||
844 | #undef ctf_custom_code | |
845 | #define ctf_custom_code(...) \ | |
846 | { \ | |
847 | __VA_ARGS__ \ | |
848 | } | |
849 | ||
f127e61e | 850 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 851 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
852 | static inline size_t __event_get_align__##_name(void *__tp_locvar, _proto) \ |
853 | { \ | |
854 | size_t __event_align = 1; \ | |
855 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ | |
856 | \ | |
857 | _fields \ | |
858 | return __event_align; \ | |
859 | } | |
3c4ffab9 | 860 | |
3bc29f0a | 861 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 862 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
863 | static inline size_t __event_get_align__##_name(void *__tp_locvar) \ |
864 | { \ | |
865 | size_t __event_align = 1; \ | |
866 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ | |
867 | \ | |
868 | _fields \ | |
869 | return __event_align; \ | |
870 | } | |
d3de7f14 | 871 | |
3c4ffab9 MD |
872 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
873 | ||
3c4ffab9 | 874 | /* |
f127e61e | 875 | * Stage 6 of tracepoint event generation. |
e763dbf5 | 876 | * |
f127e61e MD |
877 | * Create the probe function. This function calls event size calculation |
878 | * and writes event data into the buffer. | |
40652b65 MD |
879 | */ |
880 | ||
f127e61e | 881 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 MD |
882 | #include <probes/lttng-events-reset.h> |
883 | #include <probes/lttng-events-write.h> | |
c6e3f225 | 884 | |
f127e61e MD |
885 | #undef _ctf_integer_ext_fetched |
886 | #define _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
e763dbf5 | 887 | { \ |
f127e61e MD |
888 | _type __tmp = _src; \ |
889 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\ | |
aaa4004a | 890 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ |
f127e61e MD |
891 | } |
892 | ||
893 | #undef _ctf_integer_ext_isuser0 | |
894 | #define _ctf_integer_ext_isuser0(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
895 | _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) | |
896 | ||
897 | #undef _ctf_integer_ext_isuser1 | |
898 | #define _ctf_integer_ext_isuser1(_type, _item, _user_src, _byte_order, _base, _nowrite) \ | |
899 | { \ | |
3c8ebbc8 MD |
900 | union { \ |
901 | char __array[sizeof(_user_src)]; \ | |
902 | __typeof__(_user_src) __v; \ | |
903 | } __tmp_fetch; \ | |
904 | if (lib_ring_buffer_copy_from_user_check_nofault(__tmp_fetch.__array, \ | |
905 | &(_user_src), sizeof(_user_src))) \ | |
906 | memset(__tmp_fetch.__array, 0, sizeof(__tmp_fetch.__array)); \ | |
907 | _ctf_integer_ext_fetched(_type, _item, __tmp_fetch.__v, _byte_order, _base, _nowrite) \ | |
f127e61e MD |
908 | } |
909 | ||
910 | #undef _ctf_integer_ext | |
911 | #define _ctf_integer_ext(_type, _item, _user_src, _byte_order, _base, _user, _nowrite) \ | |
912 | _ctf_integer_ext_isuser##_user(_type, _item, _user_src, _byte_order, _base, _nowrite) | |
913 | ||
914 | #undef _ctf_array_encoded | |
3834b99f | 915 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
916 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ |
917 | if (_user) { \ | |
918 | __chan->ops->event_write_from_user(&__ctx, _src, sizeof(_type) * (_length)); \ | |
919 | } else { \ | |
920 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); \ | |
921 | } | |
922 | ||
43803cf2 MD |
923 | #if (__BYTE_ORDER == __LITTLE_ENDIAN) |
924 | #undef _ctf_array_bitfield | |
925 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
926 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
927 | if (_user) { \ | |
928 | __chan->ops->event_write_from_user(&__ctx, _src, sizeof(_type) * (_length)); \ | |
929 | } else { \ | |
930 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); \ | |
931 | } | |
932 | #else /* #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
933 | /* | |
934 | * For big endian, we need to byteswap into little endian. | |
935 | */ | |
936 | #undef _ctf_array_bitfield | |
937 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
938 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
939 | { \ | |
940 | size_t _i; \ | |
941 | \ | |
942 | for (_i = 0; _i < (_length); _i++) { \ | |
943 | _type _tmp; \ | |
944 | \ | |
945 | if (_user) { \ | |
946 | if (get_user(_tmp, (_type *) _src + _i)) \ | |
947 | _tmp = 0; \ | |
948 | } else { \ | |
949 | _tmp = ((_type *) _src)[_i]; \ | |
950 | } \ | |
951 | switch (sizeof(_type)) { \ | |
952 | case 1: \ | |
953 | break; \ | |
954 | case 2: \ | |
955 | _tmp = cpu_to_le16(_tmp); \ | |
956 | break; \ | |
957 | case 4: \ | |
958 | _tmp = cpu_to_le32(_tmp); \ | |
959 | break; \ | |
960 | case 8: \ | |
961 | _tmp = cpu_to_le64(_tmp); \ | |
962 | break; \ | |
963 | default: \ | |
964 | BUG_ON(1); \ | |
965 | } \ | |
966 | __chan->ops->event_write(&__ctx, &_tmp, sizeof(_type)); \ | |
967 | } \ | |
968 | } | |
969 | #endif /* #else #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
970 | ||
f127e61e MD |
971 | #undef _ctf_sequence_encoded |
972 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 973 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
84da5206 | 974 | { \ |
114667d5 | 975 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx]; \ |
f127e61e MD |
976 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
977 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
84da5206 | 978 | } \ |
f127e61e MD |
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 | ||
43803cf2 MD |
988 | #if (__BYTE_ORDER == __LITTLE_ENDIAN) |
989 | #undef _ctf_sequence_bitfield | |
990 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
991 | _length_type, _src_length, \ | |
992 | _user, _nowrite) \ | |
993 | { \ | |
114667d5 | 994 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx] * sizeof(_type) * CHAR_BIT; \ |
43803cf2 MD |
995 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
996 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
997 | } \ | |
998 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
999 | if (_user) { \ | |
1000 | __chan->ops->event_write_from_user(&__ctx, _src, \ | |
1001 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
1002 | } else { \ | |
1003 | __chan->ops->event_write(&__ctx, _src, \ | |
1004 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
1005 | } | |
1006 | #else /* #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
1007 | /* | |
1008 | * For big endian, we need to byteswap into little endian. | |
1009 | */ | |
1010 | #undef _ctf_sequence_bitfield | |
1011 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
1012 | _length_type, _src_length, \ | |
1013 | _user, _nowrite) \ | |
1014 | { \ | |
114667d5 | 1015 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx] * sizeof(_type) * CHAR_BIT; \ |
43803cf2 MD |
1016 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
1017 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
1018 | } \ | |
1019 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
1020 | { \ | |
1021 | size_t _i, _length; \ | |
1022 | \ | |
1023 | _length = __get_dynamic_len(dest); \ | |
1024 | for (_i = 0; _i < _length; _i++) { \ | |
1025 | _type _tmp; \ | |
1026 | \ | |
1027 | if (_user) { \ | |
1028 | if (get_user(_tmp, (_type *) _src + _i)) \ | |
1029 | _tmp = 0; \ | |
1030 | } else { \ | |
1031 | _tmp = ((_type *) _src)[_i]; \ | |
1032 | } \ | |
1033 | switch (sizeof(_type)) { \ | |
1034 | case 1: \ | |
1035 | break; \ | |
1036 | case 2: \ | |
1037 | _tmp = cpu_to_le16(_tmp); \ | |
1038 | break; \ | |
1039 | case 4: \ | |
1040 | _tmp = cpu_to_le32(_tmp); \ | |
1041 | break; \ | |
1042 | case 8: \ | |
1043 | _tmp = cpu_to_le64(_tmp); \ | |
1044 | break; \ | |
1045 | default: \ | |
1046 | BUG_ON(1); \ | |
1047 | } \ | |
1048 | __chan->ops->event_write(&__ctx, &_tmp, sizeof(_type)); \ | |
1049 | } \ | |
1050 | } | |
1051 | #endif /* #else #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
1052 | ||
f127e61e MD |
1053 | #undef _ctf_string |
1054 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
f127e61e | 1055 | if (_user) { \ |
1d84e8e7 | 1056 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(*(_src))); \ |
f127e61e MD |
1057 | __chan->ops->event_strcpy_from_user(&__ctx, _src, \ |
1058 | __get_dynamic_len(dest)); \ | |
1059 | } else { \ | |
1d84e8e7 MD |
1060 | const char *__ctf_tmp_string = \ |
1061 | ((_src) ? (_src) : __LTTNG_NULL_STRING); \ | |
1062 | lib_ring_buffer_align_ctx(&__ctx, \ | |
1063 | lttng_alignof(*__ctf_tmp_string)); \ | |
1064 | __chan->ops->event_strcpy(&__ctx, __ctf_tmp_string, \ | |
f127e61e MD |
1065 | __get_dynamic_len(dest)); \ |
1066 | } | |
e763dbf5 | 1067 | |
141ddf28 MD |
1068 | #undef _ctf_enum |
1069 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
1070 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
f64dd4be MD |
1071 | |
1072 | #undef ctf_align | |
1073 | #define ctf_align(_type) \ | |
1074 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); | |
1075 | ||
1076 | #undef ctf_custom_field | |
1077 | #define ctf_custom_field(_type, _item, _code) _code | |
1078 | ||
1079 | #undef ctf_custom_code | |
1080 | #define ctf_custom_code(...) \ | |
1081 | { \ | |
1082 | __VA_ARGS__ \ | |
1083 | } | |
1084 | ||
e763dbf5 | 1085 | /* Beware: this get len actually consumes the len value */ |
f127e61e | 1086 | #undef __get_dynamic_len |
114667d5 | 1087 | #define __get_dynamic_len(field) this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx++] |
e763dbf5 MD |
1088 | |
1089 | #undef TP_PROTO | |
f127e61e | 1090 | #define TP_PROTO(...) __VA_ARGS__ |
e763dbf5 MD |
1091 | |
1092 | #undef TP_ARGS | |
f127e61e | 1093 | #define TP_ARGS(...) __VA_ARGS__ |
e763dbf5 | 1094 | |
f127e61e MD |
1095 | #undef TP_FIELDS |
1096 | #define TP_FIELDS(...) __VA_ARGS__ | |
e763dbf5 | 1097 | |
7ca580f8 MD |
1098 | #undef TP_locvar |
1099 | #define TP_locvar(...) __VA_ARGS__ | |
1100 | ||
265822ae MD |
1101 | #undef TP_code_pre |
1102 | #define TP_code_pre(...) __VA_ARGS__ | |
1103 | ||
1104 | #undef TP_code_post | |
1105 | #define TP_code_post(...) __VA_ARGS__ | |
7ca580f8 | 1106 | |
c337ddc2 MD |
1107 | /* |
1108 | * For state dump, check that "session" argument (mandatory) matches the | |
1109 | * session this event belongs to. Ensures that we write state dump data only | |
1110 | * into the started session, not into all sessions. | |
1111 | */ | |
1112 | #ifdef TP_SESSION_CHECK | |
1113 | #define _TP_SESSION_CHECK(session, csession) (session == csession) | |
1114 | #else /* TP_SESSION_CHECK */ | |
1115 | #define _TP_SESSION_CHECK(session, csession) 1 | |
1116 | #endif /* TP_SESSION_CHECK */ | |
1117 | ||
f9771d39 | 1118 | /* |
f127e61e MD |
1119 | * Using twice size for filter stack data to hold size and pointer for |
1120 | * each field (worse case). For integers, max size required is 64-bit. | |
1121 | * Same for double-precision floats. Those fit within | |
1122 | * 2*sizeof(unsigned long) for all supported architectures. | |
1123 | * Perform UNION (||) of filter runtime list. | |
f9771d39 | 1124 | */ |
3bc29f0a | 1125 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 1126 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
e763dbf5 MD |
1127 | static void __event_probe__##_name(void *__data, _proto) \ |
1128 | { \ | |
7ca580f8 | 1129 | struct probe_local_vars { _locvar }; \ |
a90917c3 | 1130 | struct lttng_event *__event = __data; \ |
79150a49 JD |
1131 | struct lttng_probe_ctx __lttng_probe_ctx = { \ |
1132 | .event = __event, \ | |
ccecf3fb | 1133 | .interruptible = !irqs_disabled(), \ |
79150a49 | 1134 | }; \ |
a90917c3 | 1135 | struct lttng_channel *__chan = __event->chan; \ |
e0130fab | 1136 | struct lttng_session *__session = __chan->session; \ |
aaa4004a | 1137 | struct lib_ring_buffer_ctx __ctx; \ |
114667d5 MD |
1138 | ssize_t __event_len; \ |
1139 | size_t __event_align; \ | |
ec0a7fba | 1140 | size_t __orig_dynamic_len_offset, __dynamic_len_idx __attribute__((unused)); \ |
f127e61e | 1141 | union { \ |
114667d5 | 1142 | size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)]; \ |
f127e61e MD |
1143 | char __filter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \ |
1144 | } __stackvar; \ | |
e763dbf5 | 1145 | int __ret; \ |
7ca580f8 MD |
1146 | struct probe_local_vars __tp_locvar; \ |
1147 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
1148 | &__tp_locvar; \ | |
d1f652f8 | 1149 | struct lttng_id_tracker_rcu *__lf; \ |
e763dbf5 | 1150 | \ |
e0130fab | 1151 | if (!_TP_SESSION_CHECK(session, __session)) \ |
c337ddc2 | 1152 | return; \ |
a8f2d0c7 | 1153 | if (unlikely(!READ_ONCE(__session->active))) \ |
e64957da | 1154 | return; \ |
a8f2d0c7 | 1155 | if (unlikely(!READ_ONCE(__chan->enabled))) \ |
e64957da | 1156 | return; \ |
a8f2d0c7 | 1157 | if (unlikely(!READ_ONCE(__event->enabled))) \ |
52fc2e1f | 1158 | return; \ |
d1f652f8 MD |
1159 | __lf = lttng_rcu_dereference(__session->pid_tracker.p); \ |
1160 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, current->tgid))) \ | |
1161 | return; \ | |
1162 | __lf = lttng_rcu_dereference(__session->vpid_tracker.p); \ | |
1163 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, task_tgid_vnr(current)))) \ | |
1164 | return; \ | |
1165 | __lf = lttng_rcu_dereference(__session->uid_tracker.p); \ | |
1166 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1167 | lttng_current_uid()))) \ |
d1f652f8 MD |
1168 | return; \ |
1169 | __lf = lttng_rcu_dereference(__session->vuid_tracker.p); \ | |
1170 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1171 | lttng_current_vuid()))) \ |
d1f652f8 MD |
1172 | return; \ |
1173 | __lf = lttng_rcu_dereference(__session->gid_tracker.p); \ | |
1174 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1175 | lttng_current_gid()))) \ |
d1f652f8 MD |
1176 | return; \ |
1177 | __lf = lttng_rcu_dereference(__session->vgid_tracker.p); \ | |
1178 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1179 | lttng_current_vgid()))) \ |
e0130fab | 1180 | return; \ |
114667d5 MD |
1181 | __orig_dynamic_len_offset = this_cpu_ptr(<tng_dynamic_len_stack)->offset; \ |
1182 | __dynamic_len_idx = __orig_dynamic_len_offset; \ | |
265822ae | 1183 | _code_pre \ |
f127e61e MD |
1184 | if (unlikely(!list_empty(&__event->bytecode_runtime_head))) { \ |
1185 | struct lttng_bytecode_runtime *bc_runtime; \ | |
1186 | int __filter_record = __event->has_enablers_without_bytecode; \ | |
1187 | \ | |
1188 | __event_prepare_filter_stack__##_name(__stackvar.__filter_stack_data, \ | |
1189 | tp_locvar, _args); \ | |
7a09dcb7 | 1190 | lttng_list_for_each_entry_rcu(bc_runtime, &__event->bytecode_runtime_head, node) { \ |
79150a49 | 1191 | if (unlikely(bc_runtime->filter(bc_runtime, &__lttng_probe_ctx, \ |
8904bcfa | 1192 | __stackvar.__filter_stack_data) & LTTNG_FILTER_RECORD_FLAG)) { \ |
f127e61e | 1193 | __filter_record = 1; \ |
8904bcfa FD |
1194 | break; \ |
1195 | } \ | |
f127e61e MD |
1196 | } \ |
1197 | if (likely(!__filter_record)) \ | |
265822ae | 1198 | goto __post; \ |
f127e61e | 1199 | } \ |
114667d5 MD |
1200 | __event_len = __event_get_size__##_name(tp_locvar, _args); \ |
1201 | if (unlikely(__event_len < 0)) { \ | |
1202 | lib_ring_buffer_lost_event_too_big(__chan->chan); \ | |
1203 | goto __post; \ | |
1204 | } \ | |
7ca580f8 | 1205 | __event_align = __event_get_align__##_name(tp_locvar, _args); \ |
79150a49 | 1206 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, &__lttng_probe_ctx, __event_len, \ |
e763dbf5 | 1207 | __event_align, -1); \ |
aaa4004a | 1208 | __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ |
e763dbf5 | 1209 | if (__ret < 0) \ |
265822ae | 1210 | goto __post; \ |
f127e61e | 1211 | _fields \ |
aaa4004a | 1212 | __chan->ops->event_commit(&__ctx); \ |
265822ae MD |
1213 | __post: \ |
1214 | _code_post \ | |
114667d5 MD |
1215 | barrier(); /* use before un-reserve. */ \ |
1216 | this_cpu_ptr(<tng_dynamic_len_stack)->offset = __orig_dynamic_len_offset; \ | |
265822ae | 1217 | return; \ |
e763dbf5 MD |
1218 | } |
1219 | ||
3bc29f0a | 1220 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 1221 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f7bdf4db MD |
1222 | static void __event_probe__##_name(void *__data) \ |
1223 | { \ | |
7ca580f8 | 1224 | struct probe_local_vars { _locvar }; \ |
a90917c3 | 1225 | struct lttng_event *__event = __data; \ |
79150a49 JD |
1226 | struct lttng_probe_ctx __lttng_probe_ctx = { \ |
1227 | .event = __event, \ | |
ccecf3fb | 1228 | .interruptible = !irqs_disabled(), \ |
79150a49 | 1229 | }; \ |
a90917c3 | 1230 | struct lttng_channel *__chan = __event->chan; \ |
e0130fab | 1231 | struct lttng_session *__session = __chan->session; \ |
f7bdf4db | 1232 | struct lib_ring_buffer_ctx __ctx; \ |
114667d5 MD |
1233 | ssize_t __event_len; \ |
1234 | size_t __event_align; \ | |
ec0a7fba | 1235 | size_t __orig_dynamic_len_offset, __dynamic_len_idx __attribute__((unused)); \ |
f127e61e | 1236 | union { \ |
114667d5 | 1237 | size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)]; \ |
f127e61e MD |
1238 | char __filter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \ |
1239 | } __stackvar; \ | |
f7bdf4db | 1240 | int __ret; \ |
7ca580f8 MD |
1241 | struct probe_local_vars __tp_locvar; \ |
1242 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
1243 | &__tp_locvar; \ | |
d1f652f8 | 1244 | struct lttng_id_tracker_rcu *__lf; \ |
f7bdf4db | 1245 | \ |
e0130fab | 1246 | if (!_TP_SESSION_CHECK(session, __session)) \ |
c337ddc2 | 1247 | return; \ |
a8f2d0c7 | 1248 | if (unlikely(!READ_ONCE(__session->active))) \ |
f7bdf4db | 1249 | return; \ |
a8f2d0c7 | 1250 | if (unlikely(!READ_ONCE(__chan->enabled))) \ |
f7bdf4db | 1251 | return; \ |
a8f2d0c7 | 1252 | if (unlikely(!READ_ONCE(__event->enabled))) \ |
f7bdf4db | 1253 | return; \ |
d1f652f8 MD |
1254 | __lf = lttng_rcu_dereference(__session->pid_tracker.p); \ |
1255 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, current->tgid))) \ | |
1256 | return; \ | |
1257 | __lf = lttng_rcu_dereference(__session->vpid_tracker.p); \ | |
1258 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, task_tgid_vnr(current)))) \ | |
1259 | return; \ | |
1260 | __lf = lttng_rcu_dereference(__session->uid_tracker.p); \ | |
1261 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1262 | lttng_current_uid()))) \ |
d1f652f8 MD |
1263 | return; \ |
1264 | __lf = lttng_rcu_dereference(__session->vuid_tracker.p); \ | |
1265 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1266 | lttng_current_vuid()))) \ |
d1f652f8 MD |
1267 | return; \ |
1268 | __lf = lttng_rcu_dereference(__session->gid_tracker.p); \ | |
1269 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1270 | lttng_current_gid()))) \ |
d1f652f8 MD |
1271 | return; \ |
1272 | __lf = lttng_rcu_dereference(__session->vgid_tracker.p); \ | |
1273 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1274 | lttng_current_vgid()))) \ |
e0130fab | 1275 | return; \ |
114667d5 MD |
1276 | __orig_dynamic_len_offset = this_cpu_ptr(<tng_dynamic_len_stack)->offset; \ |
1277 | __dynamic_len_idx = __orig_dynamic_len_offset; \ | |
265822ae | 1278 | _code_pre \ |
f127e61e MD |
1279 | if (unlikely(!list_empty(&__event->bytecode_runtime_head))) { \ |
1280 | struct lttng_bytecode_runtime *bc_runtime; \ | |
1281 | int __filter_record = __event->has_enablers_without_bytecode; \ | |
1282 | \ | |
1283 | __event_prepare_filter_stack__##_name(__stackvar.__filter_stack_data, \ | |
1284 | tp_locvar); \ | |
7a09dcb7 | 1285 | lttng_list_for_each_entry_rcu(bc_runtime, &__event->bytecode_runtime_head, node) { \ |
79150a49 | 1286 | if (unlikely(bc_runtime->filter(bc_runtime, &__lttng_probe_ctx, \ |
8904bcfa | 1287 | __stackvar.__filter_stack_data) & LTTNG_FILTER_RECORD_FLAG)) { \ |
f127e61e | 1288 | __filter_record = 1; \ |
8904bcfa FD |
1289 | break; \ |
1290 | } \ | |
f127e61e MD |
1291 | } \ |
1292 | if (likely(!__filter_record)) \ | |
265822ae | 1293 | goto __post; \ |
f127e61e | 1294 | } \ |
114667d5 MD |
1295 | __event_len = __event_get_size__##_name(tp_locvar); \ |
1296 | if (unlikely(__event_len < 0)) { \ | |
1297 | lib_ring_buffer_lost_event_too_big(__chan->chan); \ | |
1298 | goto __post; \ | |
1299 | } \ | |
7ca580f8 | 1300 | __event_align = __event_get_align__##_name(tp_locvar); \ |
79150a49 | 1301 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, &__lttng_probe_ctx, __event_len, \ |
f7bdf4db MD |
1302 | __event_align, -1); \ |
1303 | __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ | |
1304 | if (__ret < 0) \ | |
265822ae | 1305 | goto __post; \ |
f127e61e | 1306 | _fields \ |
f7bdf4db | 1307 | __chan->ops->event_commit(&__ctx); \ |
265822ae MD |
1308 | __post: \ |
1309 | _code_post \ | |
114667d5 MD |
1310 | barrier(); /* use before un-reserve. */ \ |
1311 | this_cpu_ptr(<tng_dynamic_len_stack)->offset = __orig_dynamic_len_offset; \ | |
265822ae | 1312 | return; \ |
f7bdf4db MD |
1313 | } |
1314 | ||
e763dbf5 MD |
1315 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
1316 | ||
f127e61e MD |
1317 | #undef __get_dynamic_len |
1318 | ||
1319 | /* | |
1320 | * Stage 7 of the trace events. | |
1321 | * | |
1322 | * Create event descriptions. | |
1323 | */ | |
1324 | ||
1325 | /* Named field types must be defined in lttng-types.h */ | |
1326 | ||
ba012e22 | 1327 | #include <probes/lttng-events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
f127e61e MD |
1328 | |
1329 | #ifndef TP_PROBE_CB | |
1330 | #define TP_PROBE_CB(_template) &__event_probe__##_template | |
1331 | #endif | |
1332 | ||
1333 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
1334 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
1335 | static const struct lttng_event_desc __event_desc___##_map = { \ | |
1336 | .fields = __event_fields___##_template, \ | |
1337 | .name = #_map, \ | |
1338 | .kname = #_name, \ | |
1339 | .probe_callback = (void *) TP_PROBE_CB(_template), \ | |
1340 | .nr_fields = ARRAY_SIZE(__event_fields___##_template), \ | |
1341 | .owner = THIS_MODULE, \ | |
1342 | }; | |
1343 | ||
1344 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
1345 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
1346 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) | |
1347 | ||
1348 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
1349 | ||
1350 | /* | |
1351 | * Stage 8 of the trace events. | |
1352 | * | |
1353 | * Create an array of event description pointers. | |
1354 | */ | |
1355 | ||
ba012e22 | 1356 | #include <probes/lttng-events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
f127e61e MD |
1357 | |
1358 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
1359 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
1360 | &__event_desc___##_map, | |
1361 | ||
1362 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
1363 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
1364 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) | |
1365 | ||
1366 | #define TP_ID1(_token, _system) _token##_system | |
1367 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1368 | ||
1369 | static const struct lttng_event_desc *TP_ID(__event_desc___, TRACE_SYSTEM)[] = { | |
1370 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
1371 | }; | |
1372 | ||
1373 | #undef TP_ID1 | |
1374 | #undef TP_ID | |
1375 | ||
1376 | /* | |
1377 | * Stage 9 of the trace events. | |
1378 | * | |
1379 | * Create a toplevel descriptor for the whole probe. | |
1380 | */ | |
1381 | ||
1382 | #define TP_ID1(_token, _system) _token##_system | |
1383 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1384 | ||
1385 | /* non-const because list head will be modified when registered. */ | |
1386 | static __used struct lttng_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = { | |
1387 | .provider = __stringify(TRACE_SYSTEM), | |
1388 | .event_desc = TP_ID(__event_desc___, TRACE_SYSTEM), | |
1389 | .nr_events = ARRAY_SIZE(TP_ID(__event_desc___, TRACE_SYSTEM)), | |
1390 | .head = { NULL, NULL }, | |
1391 | .lazy_init_head = { NULL, NULL }, | |
1392 | .lazy = 0, | |
1393 | }; | |
1394 | ||
1395 | #undef TP_ID1 | |
1396 | #undef TP_ID | |
1397 | ||
3afe7aac | 1398 | /* |
c099397a | 1399 | * Stage 10 of the trace events. |
3afe7aac MD |
1400 | * |
1401 | * Register/unregister probes at module load/unload. | |
1402 | */ | |
1403 | ||
ba012e22 | 1404 | #include <probes/lttng-events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
3afe7aac MD |
1405 | |
1406 | #define TP_ID1(_token, _system) _token##_system | |
1407 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1408 | #define module_init_eval1(_token, _system) module_init(_token##_system) | |
1409 | #define module_init_eval(_token, _system) module_init_eval1(_token, _system) | |
1410 | #define module_exit_eval1(_token, _system) module_exit(_token##_system) | |
1411 | #define module_exit_eval(_token, _system) module_exit_eval1(_token, _system) | |
1412 | ||
2655f9ad | 1413 | #ifndef TP_MODULE_NOINIT |
3afe7aac MD |
1414 | static int TP_ID(__lttng_events_init__, TRACE_SYSTEM)(void) |
1415 | { | |
a90917c3 | 1416 | return lttng_probe_register(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
1417 | } |
1418 | ||
3afe7aac MD |
1419 | static void TP_ID(__lttng_events_exit__, TRACE_SYSTEM)(void) |
1420 | { | |
a90917c3 | 1421 | lttng_probe_unregister(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
1422 | } |
1423 | ||
2655f9ad MD |
1424 | #ifndef TP_MODULE_NOAUTOLOAD |
1425 | module_init_eval(__lttng_events_init__, TRACE_SYSTEM); | |
3afe7aac | 1426 | module_exit_eval(__lttng_events_exit__, TRACE_SYSTEM); |
259b6cb3 | 1427 | #endif |
3afe7aac | 1428 | |
2655f9ad MD |
1429 | #endif |
1430 | ||
3afe7aac MD |
1431 | #undef module_init_eval |
1432 | #undef module_exit_eval | |
1433 | #undef TP_ID1 | |
1434 | #undef TP_ID | |
177b3692 MD |
1435 | |
1436 | #undef TP_PROTO | |
1437 | #undef TP_ARGS |