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> | |
263b6c88 | 18 | #include <wrapper/vmalloc.h> /* for wrapper_vmalloc_sync_mappings() */ |
8d43abb7 | 19 | #include <wrapper/ringbuffer/frontend_types.h> |
3c8ebbc8 | 20 | #include <wrapper/ringbuffer/backend.h> |
8d43abb7 | 21 | #include <wrapper/rcu.h> |
608416e1 | 22 | #include <wrapper/user_namespace.h> |
8d43abb7 MD |
23 | #include <lttng-events.h> |
24 | #include <lttng-tracer-core.h> | |
ec85ce1d | 25 | #include <lttng-tp-mempool.h> |
40652b65 | 26 | |
1d84e8e7 MD |
27 | #define __LTTNG_NULL_STRING "(null)" |
28 | ||
40652b65 | 29 | /* |
6db3d13b | 30 | * Macro declarations used for all stages. |
40652b65 MD |
31 | */ |
32 | ||
76e4f017 MD |
33 | /* |
34 | * LTTng name mapping macros. LTTng remaps some of the kernel events to | |
35 | * enforce name-spacing. | |
36 | */ | |
3bc29f0a | 37 | #undef LTTNG_TRACEPOINT_EVENT_MAP |
f127e61e | 38 | #define LTTNG_TRACEPOINT_EVENT_MAP(name, map, proto, args, fields) \ |
3bc29f0a | 39 | LTTNG_TRACEPOINT_EVENT_CLASS(map, \ |
76e4f017 MD |
40 | PARAMS(proto), \ |
41 | PARAMS(args), \ | |
f127e61e | 42 | PARAMS(fields)) \ |
3bc29f0a | 43 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(map, name, map, PARAMS(proto), PARAMS(args)) |
76e4f017 | 44 | |
3bc29f0a | 45 | #undef LTTNG_TRACEPOINT_EVENT_MAP_NOARGS |
f127e61e | 46 | #define LTTNG_TRACEPOINT_EVENT_MAP_NOARGS(name, map, fields) \ |
3bc29f0a | 47 | LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(map, \ |
f127e61e | 48 | PARAMS(fields)) \ |
3bc29f0a | 49 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(map, name, map) |
76e4f017 | 50 | |
f127e61e | 51 | #undef LTTNG_TRACEPOINT_EVENT_CODE_MAP |
265822ae | 52 | #define LTTNG_TRACEPOINT_EVENT_CODE_MAP(name, map, proto, args, _locvar, _code_pre, fields, _code_post) \ |
f127e61e MD |
53 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE(map, \ |
54 | PARAMS(proto), \ | |
55 | PARAMS(args), \ | |
56 | PARAMS(_locvar), \ | |
265822ae MD |
57 | PARAMS(_code_pre), \ |
58 | PARAMS(fields), \ | |
59 | PARAMS(_code_post)) \ | |
f127e61e MD |
60 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(map, name, map, PARAMS(proto), PARAMS(args)) |
61 | ||
3bc29f0a | 62 | #undef LTTNG_TRACEPOINT_EVENT_CODE |
265822ae | 63 | #define LTTNG_TRACEPOINT_EVENT_CODE(name, proto, args, _locvar, _code_pre, fields, _code_post) \ |
f127e61e | 64 | LTTNG_TRACEPOINT_EVENT_CODE_MAP(name, name, \ |
7ca580f8 MD |
65 | PARAMS(proto), \ |
66 | PARAMS(args), \ | |
67 | PARAMS(_locvar), \ | |
265822ae MD |
68 | PARAMS(_code_pre), \ |
69 | PARAMS(fields), \ | |
70 | PARAMS(_code_post)) | |
fcf7fa33 | 71 | |
40652b65 | 72 | /* |
3bc29f0a MD |
73 | * LTTNG_TRACEPOINT_EVENT_CLASS can be used to add a generic function |
74 | * handlers for events. That is, if all events have the same parameters | |
75 | * and just have distinct trace points. Each tracepoint can be defined | |
76 | * with LTTNG_TRACEPOINT_EVENT_INSTANCE and that will map the | |
77 | * LTTNG_TRACEPOINT_EVENT_CLASS to the tracepoint. | |
40652b65 | 78 | * |
3bc29f0a MD |
79 | * LTTNG_TRACEPOINT_EVENT is a one to one mapping between tracepoint and |
80 | * template. | |
40652b65 | 81 | */ |
6db3d13b | 82 | |
3bc29f0a | 83 | #undef LTTNG_TRACEPOINT_EVENT |
f127e61e | 84 | #define LTTNG_TRACEPOINT_EVENT(name, proto, args, fields) \ |
3bc29f0a MD |
85 | LTTNG_TRACEPOINT_EVENT_MAP(name, name, \ |
86 | PARAMS(proto), \ | |
87 | PARAMS(args), \ | |
f127e61e | 88 | PARAMS(fields)) |
40652b65 | 89 | |
3bc29f0a | 90 | #undef LTTNG_TRACEPOINT_EVENT_NOARGS |
f127e61e MD |
91 | #define LTTNG_TRACEPOINT_EVENT_NOARGS(name, fields) \ |
92 | LTTNG_TRACEPOINT_EVENT_MAP_NOARGS(name, name, PARAMS(fields)) | |
76e4f017 | 93 | |
3bc29f0a MD |
94 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE |
95 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE(template, name, proto, args) \ | |
96 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(template, name, name, PARAMS(proto), PARAMS(args)) | |
76e4f017 | 97 | |
3bc29f0a MD |
98 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS |
99 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(template, name) \ | |
100 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(template, name, name) | |
76e4f017 | 101 | |
3bc29f0a | 102 | #undef LTTNG_TRACEPOINT_EVENT_CLASS |
f127e61e | 103 | #define LTTNG_TRACEPOINT_EVENT_CLASS(_name, _proto, _args, _fields) \ |
3bc29f0a | 104 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, PARAMS(_proto), PARAMS(_args), , , \ |
265822ae | 105 | PARAMS(_fields), ) |
7ca580f8 | 106 | |
3bc29f0a | 107 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS |
f127e61e | 108 | #define LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(_name, _fields) \ |
265822ae | 109 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, , , PARAMS(_fields), ) |
7ca580f8 MD |
110 | |
111 | ||
f62b389e | 112 | /* |
c099397a | 113 | * Stage 1 of the trace events. |
f62b389e MD |
114 | * |
115 | * Create dummy trace calls for each events, verifying that the LTTng module | |
3bc29f0a MD |
116 | * instrumentation headers match the kernel arguments. Will be optimized |
117 | * out by the compiler. | |
f62b389e MD |
118 | */ |
119 | ||
f127e61e | 120 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 | 121 | #include <probes/lttng-events-reset.h> |
f62b389e MD |
122 | |
123 | #undef TP_PROTO | |
f127e61e | 124 | #define TP_PROTO(...) __VA_ARGS__ |
f62b389e MD |
125 | |
126 | #undef TP_ARGS | |
f127e61e | 127 | #define TP_ARGS(...) __VA_ARGS__ |
f62b389e | 128 | |
3bc29f0a MD |
129 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP |
130 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
7eb827f2 | 131 | void trace_##_name(_proto); |
f62b389e | 132 | |
3bc29f0a MD |
133 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS |
134 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
cb1aa0c7 | 135 | void trace_##_name(void); |
f7bdf4db | 136 | |
f62b389e MD |
137 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
138 | ||
d0558de2 MD |
139 | /* |
140 | * Stage 1.1 of the trace events. | |
141 | * | |
142 | * Create dummy trace prototypes for each event class, and for each used | |
143 | * template. This will allow checking whether the prototypes from the | |
144 | * class and the instance using the class actually match. | |
145 | */ | |
146 | ||
ba012e22 | 147 | #include <probes/lttng-events-reset.h> /* Reset all macros within TRACE_EVENT */ |
d0558de2 MD |
148 | |
149 | #undef TP_PROTO | |
150 | #define TP_PROTO(...) __VA_ARGS__ | |
151 | ||
152 | #undef TP_ARGS | |
153 | #define TP_ARGS(...) __VA_ARGS__ | |
154 | ||
155 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
156 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
157 | void __event_template_proto___##_template(_proto); | |
158 | ||
159 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
160 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
161 | void __event_template_proto___##_template(void); | |
162 | ||
163 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE | |
265822ae | 164 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
d0558de2 MD |
165 | void __event_template_proto___##_name(_proto); |
166 | ||
167 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS | |
265822ae | 168 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
d0558de2 MD |
169 | void __event_template_proto___##_name(void); |
170 | ||
171 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
172 | ||
141ddf28 MD |
173 | /* |
174 | * Stage 1.2 of tracepoint event generation | |
175 | * | |
176 | * Unfolding the enums | |
177 | */ | |
178 | #include <probes/lttng-events-reset.h> /* Reset all macros within TRACE_EVENT */ | |
179 | ||
180 | /* Enumeration entry (single value) */ | |
181 | #undef ctf_enum_value | |
182 | #define ctf_enum_value(_string, _value) \ | |
183 | { \ | |
184 | .start = { \ | |
185 | .signedness = lttng_is_signed_type(__typeof__(_value)), \ | |
186 | .value = lttng_is_signed_type(__typeof__(_value)) ? \ | |
187 | (long long) (_value) : (_value), \ | |
188 | }, \ | |
189 | .end = { \ | |
190 | .signedness = lttng_is_signed_type(__typeof__(_value)), \ | |
191 | .value = lttng_is_signed_type(__typeof__(_value)) ? \ | |
192 | (long long) (_value) : (_value), \ | |
193 | }, \ | |
194 | .string = (_string), \ | |
195 | }, | |
196 | ||
197 | /* Enumeration entry (range) */ | |
198 | #undef ctf_enum_range | |
199 | #define ctf_enum_range(_string, _range_start, _range_end) \ | |
200 | { \ | |
201 | .start = { \ | |
202 | .signedness = lttng_is_signed_type(__typeof__(_range_start)), \ | |
203 | .value = lttng_is_signed_type(__typeof__(_range_start)) ? \ | |
204 | (long long) (_range_start) : (_range_start), \ | |
205 | }, \ | |
206 | .end = { \ | |
207 | .signedness = lttng_is_signed_type(__typeof__(_range_end)), \ | |
208 | .value = lttng_is_signed_type(__typeof__(_range_end)) ? \ | |
209 | (long long) (_range_end) : (_range_end), \ | |
210 | }, \ | |
211 | .string = (_string), \ | |
212 | }, | |
213 | ||
08ad1061 PP |
214 | /* Enumeration entry (automatic value; follows the rules of CTF) */ |
215 | #undef ctf_enum_auto | |
216 | #define ctf_enum_auto(_string) \ | |
217 | { \ | |
218 | .start = { \ | |
219 | .signedness = -1, \ | |
220 | .value = -1, \ | |
221 | }, \ | |
222 | .end = { \ | |
223 | .signedness = -1, \ | |
224 | .value = -1, \ | |
225 | }, \ | |
226 | .string = (_string), \ | |
227 | .options = { \ | |
228 | .is_auto = 1, \ | |
229 | } \ | |
230 | }, | |
231 | ||
141ddf28 MD |
232 | #undef TP_ENUM_VALUES |
233 | #define TP_ENUM_VALUES(...) \ | |
234 | __VA_ARGS__ | |
235 | ||
236 | #undef LTTNG_TRACEPOINT_ENUM | |
237 | #define LTTNG_TRACEPOINT_ENUM(_name, _values) \ | |
238 | const struct lttng_enum_entry __enum_values__##_name[] = { \ | |
239 | _values \ | |
240 | }; | |
241 | ||
242 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
243 | ||
6db3d13b | 244 | /* |
c099397a | 245 | * Stage 2 of the trace events. |
6db3d13b MD |
246 | * |
247 | * Create event field type metadata section. | |
248 | * Each event produce an array of fields. | |
249 | */ | |
250 | ||
f127e61e | 251 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 MD |
252 | #include <probes/lttng-events-reset.h> |
253 | #include <probes/lttng-events-write.h> | |
254 | #include <probes/lttng-events-nowrite.h> | |
6db3d13b | 255 | |
f127e61e MD |
256 | #undef _ctf_integer_ext |
257 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ | |
c099397a MD |
258 | { \ |
259 | .name = #_item, \ | |
ceabb767 | 260 | .type = __type_integer(_type, 0, 0, -1, _byte_order, _base, none), \ |
f127e61e MD |
261 | .nowrite = _nowrite, \ |
262 | .user = _user, \ | |
ceabb767 | 263 | .nofilter = 0, \ |
c099397a | 264 | }, |
40652b65 | 265 | |
f127e61e | 266 | #undef _ctf_array_encoded |
ceabb767 MD |
267 | #define _ctf_array_encoded(_type, _item, _src, _length, \ |
268 | _encoding, _byte_order, _elem_type_base, _user, _nowrite) \ | |
299338c8 | 269 | { \ |
c099397a MD |
270 | .name = #_item, \ |
271 | .type = \ | |
272 | { \ | |
ceabb767 | 273 | .atype = atype_array_nestable, \ |
f127e61e | 274 | .u = \ |
c099397a | 275 | { \ |
ceabb767 | 276 | .array_nestable = \ |
f127e61e | 277 | { \ |
ceabb767 MD |
278 | .elem_type = __LTTNG_COMPOUND_LITERAL(struct lttng_type, \ |
279 | __type_integer(_type, 0, 0, -1, _byte_order, _elem_type_base, _encoding)), \ | |
f127e61e | 280 | .length = _length, \ |
ceabb767 | 281 | .alignment = 0, \ |
f127e61e MD |
282 | } \ |
283 | } \ | |
299338c8 | 284 | }, \ |
f127e61e MD |
285 | .nowrite = _nowrite, \ |
286 | .user = _user, \ | |
ceabb767 | 287 | .nofilter = 0, \ |
299338c8 | 288 | }, |
40652b65 | 289 | |
43803cf2 MD |
290 | #undef _ctf_array_bitfield |
291 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
292 | { \ | |
293 | .name = #_item, \ | |
294 | .type = \ | |
295 | { \ | |
ceabb767 | 296 | .atype = atype_array_nestable, \ |
43803cf2 MD |
297 | .u = \ |
298 | { \ | |
ceabb767 | 299 | .array_nestable = \ |
43803cf2 | 300 | { \ |
ceabb767 MD |
301 | .elem_type = __LTTNG_COMPOUND_LITERAL(struct lttng_type, \ |
302 | __type_integer(_type, 1, 1, 0, __LITTLE_ENDIAN, 10, none)), \ | |
43803cf2 | 303 | .length = (_length) * sizeof(_type) * CHAR_BIT, \ |
ceabb767 | 304 | .alignment = lttng_alignof(_type), \ |
43803cf2 MD |
305 | } \ |
306 | } \ | |
307 | }, \ | |
308 | .nowrite = _nowrite, \ | |
309 | .user = _user, \ | |
ceabb767 | 310 | .nofilter = 0, \ |
43803cf2 MD |
311 | }, |
312 | ||
313 | ||
f127e61e MD |
314 | #undef _ctf_sequence_encoded |
315 | #define _ctf_sequence_encoded(_type, _item, _src, \ | |
316 | _length_type, _src_length, _encoding, \ | |
ceabb767 MD |
317 | _byte_order, _elem_type_base, _user, _nowrite) \ |
318 | { \ | |
319 | .name = "_" #_item "_length", \ | |
320 | .type = __type_integer(_length_type, 0, 0, -1, __BYTE_ORDER, 10, none), \ | |
321 | .nowrite = _nowrite, \ | |
322 | .nofilter = 1, \ | |
323 | }, \ | |
299338c8 | 324 | { \ |
c099397a MD |
325 | .name = #_item, \ |
326 | .type = \ | |
327 | { \ | |
ceabb767 | 328 | .atype = atype_sequence_nestable, \ |
f127e61e | 329 | .u = \ |
c099397a | 330 | { \ |
ceabb767 | 331 | .sequence_nestable = \ |
f127e61e | 332 | { \ |
ceabb767 MD |
333 | .length_name = "_" #_item "_length", \ |
334 | .elem_type = __LTTNG_COMPOUND_LITERAL(struct lttng_type, \ | |
335 | __type_integer(_type, 0, 0, -1, _byte_order, _elem_type_base, _encoding)), \ | |
336 | .alignment = 0, \ | |
43803cf2 MD |
337 | }, \ |
338 | }, \ | |
339 | }, \ | |
340 | .nowrite = _nowrite, \ | |
341 | .user = _user, \ | |
ceabb767 | 342 | .nofilter = 0, \ |
43803cf2 MD |
343 | }, |
344 | ||
345 | #undef _ctf_sequence_bitfield | |
346 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
347 | _length_type, _src_length, \ | |
348 | _user, _nowrite) \ | |
ceabb767 MD |
349 | { \ |
350 | .name = "_" #_item "_length", \ | |
351 | .type = __type_integer(_length_type, 0, 0, -1, __BYTE_ORDER, 10, none), \ | |
352 | .nowrite = _nowrite, \ | |
353 | .nofilter = 1, \ | |
354 | }, \ | |
43803cf2 MD |
355 | { \ |
356 | .name = #_item, \ | |
357 | .type = \ | |
358 | { \ | |
ceabb767 | 359 | .atype = atype_sequence_nestable, \ |
43803cf2 MD |
360 | .u = \ |
361 | { \ | |
ceabb767 | 362 | .sequence_nestable = \ |
43803cf2 | 363 | { \ |
ceabb767 MD |
364 | .length_name = "_" #_item "_length", \ |
365 | .elem_type = __LTTNG_COMPOUND_LITERAL(struct lttng_type, \ | |
366 | __type_integer(_type, 1, 1, 0, __LITTLE_ENDIAN, 10, none)), \ | |
367 | .alignment = lttng_alignof(_type), \ | |
f127e61e | 368 | }, \ |
c099397a | 369 | }, \ |
299338c8 | 370 | }, \ |
f127e61e MD |
371 | .nowrite = _nowrite, \ |
372 | .user = _user, \ | |
ceabb767 | 373 | .nofilter = 0, \ |
299338c8 | 374 | }, |
40652b65 | 375 | |
f127e61e MD |
376 | #undef _ctf_string |
377 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
299338c8 | 378 | { \ |
c099397a MD |
379 | .name = #_item, \ |
380 | .type = \ | |
381 | { \ | |
299338c8 | 382 | .atype = atype_string, \ |
f127e61e MD |
383 | .u = \ |
384 | { \ | |
ceabb767 | 385 | .string = { .encoding = lttng_encode_UTF8 }, \ |
f127e61e | 386 | }, \ |
299338c8 | 387 | }, \ |
f127e61e MD |
388 | .nowrite = _nowrite, \ |
389 | .user = _user, \ | |
ceabb767 | 390 | .nofilter = 0, \ |
299338c8 | 391 | }, |
1d12cebd | 392 | |
141ddf28 MD |
393 | #undef _ctf_enum |
394 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
395 | { \ | |
396 | .name = #_item, \ | |
397 | .type = { \ | |
ceabb767 | 398 | .atype = atype_enum_nestable, \ |
141ddf28 | 399 | .u = { \ |
ceabb767 MD |
400 | .enum_nestable = { \ |
401 | .desc = &__enum_##_name, \ | |
402 | .container_type = __LTTNG_COMPOUND_LITERAL(struct lttng_type, \ | |
403 | __type_integer(_type, 0, 0, -1, __BYTE_ORDER, 10, none)), \ | |
404 | }, \ | |
141ddf28 MD |
405 | }, \ |
406 | }, \ | |
407 | .nowrite = _nowrite, \ | |
408 | .user = _user, \ | |
ceabb767 | 409 | .nofilter = 0, \ |
141ddf28 | 410 | }, |
f64dd4be MD |
411 | |
412 | #undef ctf_custom_field | |
413 | #define ctf_custom_field(_type, _item, _code) \ | |
414 | { \ | |
415 | .name = #_item, \ | |
ceabb767 | 416 | .type = _type, \ |
f64dd4be MD |
417 | .nowrite = 0, \ |
418 | .user = 0, \ | |
ceabb767 | 419 | .nofilter = 1, \ |
f64dd4be MD |
420 | }, |
421 | ||
422 | #undef ctf_custom_type | |
423 | #define ctf_custom_type(...) __VA_ARGS__ | |
424 | ||
f127e61e MD |
425 | #undef TP_FIELDS |
426 | #define TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */ | |
1d12cebd | 427 | |
3bc29f0a | 428 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 429 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
0d1d4002 | 430 | static const struct lttng_event_field __event_fields___##_name[] = { \ |
f127e61e | 431 | _fields \ |
299338c8 MD |
432 | }; |
433 | ||
3bc29f0a | 434 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae MD |
435 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
436 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, PARAMS(_fields), _code_post) | |
f7bdf4db | 437 | |
141ddf28 MD |
438 | #undef LTTNG_TRACEPOINT_ENUM |
439 | #define LTTNG_TRACEPOINT_ENUM(_name, _values) \ | |
440 | static const struct lttng_enum_desc __enum_##_name = { \ | |
441 | .name = #_name, \ | |
442 | .entries = __enum_values__##_name, \ | |
443 | .nr_entries = ARRAY_SIZE(__enum_values__##_name), \ | |
444 | }; | |
445 | ||
299338c8 MD |
446 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
447 | ||
19c57fbf | 448 | /* |
c099397a | 449 | * Stage 3 of the trace events. |
19c57fbf MD |
450 | * |
451 | * Create probe callback prototypes. | |
452 | */ | |
453 | ||
f127e61e | 454 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 | 455 | #include <probes/lttng-events-reset.h> |
19c57fbf MD |
456 | |
457 | #undef TP_PROTO | |
f127e61e | 458 | #define TP_PROTO(...) __VA_ARGS__ |
19c57fbf | 459 | |
3bc29f0a | 460 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 461 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
19c57fbf MD |
462 | static void __event_probe__##_name(void *__data, _proto); |
463 | ||
3bc29f0a | 464 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 465 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f7bdf4db MD |
466 | static void __event_probe__##_name(void *__data); |
467 | ||
19c57fbf MD |
468 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
469 | ||
f7bdf4db MD |
470 | /* |
471 | * Stage 4 of the trace events. | |
472 | * | |
40652b65 MD |
473 | * Create static inline function that calculates event size. |
474 | */ | |
475 | ||
f127e61e | 476 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 MD |
477 | #include <probes/lttng-events-reset.h> |
478 | #include <probes/lttng-events-write.h> | |
6db3d13b | 479 | |
f127e61e MD |
480 | #undef _ctf_integer_ext |
481 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ | |
a90917c3 | 482 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
0d1d4002 | 483 | __event_len += sizeof(_type); |
6db3d13b | 484 | |
f127e61e | 485 | #undef _ctf_array_encoded |
3834b99f | 486 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
a90917c3 | 487 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
0d1d4002 | 488 | __event_len += sizeof(_type) * (_length); |
6db3d13b | 489 | |
43803cf2 MD |
490 | #undef _ctf_array_bitfield |
491 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
3834b99f | 492 | _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite) |
43803cf2 | 493 | |
f127e61e MD |
494 | #undef _ctf_sequence_encoded |
495 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 496 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
497 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_length_type)); \ |
498 | __event_len += sizeof(_length_type); \ | |
a90917c3 | 499 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
114667d5 MD |
500 | { \ |
501 | size_t __seqlen = (_src_length); \ | |
502 | \ | |
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 | this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = __seqlen; \ | |
507 | __event_len += sizeof(_type) * __seqlen; \ | |
508 | } | |
6db3d13b | 509 | |
43803cf2 MD |
510 | #undef _ctf_sequence_bitfield |
511 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
512 | _length_type, _src_length, \ | |
513 | _user, _nowrite) \ | |
514 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
515 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
516 | ||
d0255731 | 517 | /* |
f127e61e | 518 | * ctf_user_string includes \0. If returns 0, it faulted, so we set size to |
786b8312 | 519 | * 1 (\0 only). |
d0255731 | 520 | */ |
f127e61e MD |
521 | #undef _ctf_string |
522 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
114667d5 MD |
523 | if (unlikely(++this_cpu_ptr(<tng_dynamic_len_stack)->offset >= LTTNG_DYNAMIC_LEN_STACK_SIZE)) \ |
524 | goto error; \ | |
525 | barrier(); /* reserve before use. */ \ | |
526 | if (_user) { \ | |
527 | __event_len += this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = \ | |
96d0248a | 528 | max_t(size_t, lttng_strlen_user_inatomic(_src), 1); \ |
114667d5 MD |
529 | } else { \ |
530 | __event_len += this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = \ | |
1d84e8e7 | 531 | strlen((_src) ? (_src) : __LTTNG_NULL_STRING) + 1; \ |
114667d5 | 532 | } |
c6e3f225 | 533 | |
141ddf28 MD |
534 | #undef _ctf_enum |
535 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
536 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
537 | ||
f64dd4be MD |
538 | #undef ctf_align |
539 | #define ctf_align(_type) \ | |
540 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); | |
541 | ||
542 | #undef ctf_custom_field | |
543 | #define ctf_custom_field(_type, _item, _code) \ | |
544 | { \ | |
545 | _code \ | |
546 | } | |
547 | ||
548 | #undef ctf_custom_code | |
549 | #define ctf_custom_code(...) __VA_ARGS__ | |
550 | ||
0d1d4002 | 551 | #undef TP_PROTO |
f127e61e | 552 | #define TP_PROTO(...) __VA_ARGS__ |
6db3d13b | 553 | |
f127e61e MD |
554 | #undef TP_FIELDS |
555 | #define TP_FIELDS(...) __VA_ARGS__ | |
6db3d13b | 556 | |
7ca580f8 MD |
557 | #undef TP_locvar |
558 | #define TP_locvar(...) __VA_ARGS__ | |
559 | ||
3bc29f0a | 560 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 561 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
114667d5 | 562 | static inline ssize_t __event_get_size__##_name(void *__tp_locvar, _proto) \ |
0d1d4002 MD |
563 | { \ |
564 | size_t __event_len = 0; \ | |
d3de7f14 | 565 | unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \ |
7ca580f8 | 566 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
d3de7f14 | 567 | \ |
f127e61e | 568 | _fields \ |
d3de7f14 | 569 | return __event_len; \ |
114667d5 MD |
570 | \ |
571 | error: \ | |
572 | __attribute__((unused)); \ | |
573 | return -1; \ | |
d3de7f14 MD |
574 | } |
575 | ||
3bc29f0a | 576 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 577 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
114667d5 | 578 | static inline ssize_t __event_get_size__##_name(void *__tp_locvar) \ |
d3de7f14 MD |
579 | { \ |
580 | size_t __event_len = 0; \ | |
581 | unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \ | |
7ca580f8 | 582 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
0d1d4002 | 583 | \ |
f127e61e | 584 | _fields \ |
0d1d4002 | 585 | return __event_len; \ |
114667d5 MD |
586 | \ |
587 | error: \ | |
588 | __attribute__((unused)); \ | |
589 | return -1; \ | |
6db3d13b | 590 | } |
40652b65 MD |
591 | |
592 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
593 | ||
f127e61e | 594 | |
40652b65 | 595 | /* |
f127e61e | 596 | * Stage 4.1 of tracepoint event generation. |
e763dbf5 | 597 | * |
f127e61e MD |
598 | * Create static inline function that layout the filter stack data. |
599 | * We make both write and nowrite data available to the filter. | |
e763dbf5 MD |
600 | */ |
601 | ||
f127e61e | 602 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 MD |
603 | #include <probes/lttng-events-reset.h> |
604 | #include <probes/lttng-events-write.h> | |
605 | #include <probes/lttng-events-nowrite.h> | |
f127e61e MD |
606 | |
607 | #undef _ctf_integer_ext_fetched | |
608 | #define _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
609 | if (lttng_is_signed_type(_type)) { \ | |
610 | int64_t __ctf_tmp_int64; \ | |
611 | switch (sizeof(_type)) { \ | |
612 | case 1: \ | |
613 | { \ | |
614 | union { _type t; int8_t v; } __tmp = { (_type) (_src) }; \ | |
615 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ | |
616 | break; \ | |
617 | } \ | |
618 | case 2: \ | |
619 | { \ | |
620 | union { _type t; int16_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
621 | if (_byte_order != __BYTE_ORDER) \ |
622 | __swab16s(&__tmp.v); \ | |
f127e61e MD |
623 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
624 | break; \ | |
625 | } \ | |
626 | case 4: \ | |
627 | { \ | |
628 | union { _type t; int32_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
629 | if (_byte_order != __BYTE_ORDER) \ |
630 | __swab32s(&__tmp.v); \ | |
f127e61e MD |
631 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
632 | break; \ | |
633 | } \ | |
634 | case 8: \ | |
635 | { \ | |
636 | union { _type t; int64_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
637 | if (_byte_order != __BYTE_ORDER) \ |
638 | __swab64s(&__tmp.v); \ | |
f127e61e MD |
639 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
640 | break; \ | |
641 | } \ | |
642 | default: \ | |
643 | BUG_ON(1); \ | |
644 | }; \ | |
645 | memcpy(__stack_data, &__ctf_tmp_int64, sizeof(int64_t)); \ | |
646 | } else { \ | |
647 | uint64_t __ctf_tmp_uint64; \ | |
648 | switch (sizeof(_type)) { \ | |
649 | case 1: \ | |
650 | { \ | |
651 | union { _type t; uint8_t v; } __tmp = { (_type) (_src) }; \ | |
652 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ | |
653 | break; \ | |
654 | } \ | |
655 | case 2: \ | |
656 | { \ | |
657 | union { _type t; uint16_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
658 | if (_byte_order != __BYTE_ORDER) \ |
659 | __swab16s(&__tmp.v); \ | |
f127e61e MD |
660 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
661 | break; \ | |
662 | } \ | |
663 | case 4: \ | |
664 | { \ | |
665 | union { _type t; uint32_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
666 | if (_byte_order != __BYTE_ORDER) \ |
667 | __swab32s(&__tmp.v); \ | |
f127e61e MD |
668 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
669 | break; \ | |
670 | } \ | |
671 | case 8: \ | |
672 | { \ | |
673 | union { _type t; uint64_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
674 | if (_byte_order != __BYTE_ORDER) \ |
675 | __swab64s(&__tmp.v); \ | |
f127e61e MD |
676 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
677 | break; \ | |
678 | } \ | |
679 | default: \ | |
680 | BUG_ON(1); \ | |
681 | }; \ | |
682 | memcpy(__stack_data, &__ctf_tmp_uint64, sizeof(uint64_t)); \ | |
683 | } \ | |
684 | __stack_data += sizeof(int64_t); | |
685 | ||
686 | #undef _ctf_integer_ext_isuser0 | |
687 | #define _ctf_integer_ext_isuser0(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
688 | _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) | |
689 | ||
690 | #undef _ctf_integer_ext_isuser1 | |
691 | #define _ctf_integer_ext_isuser1(_type, _item, _user_src, _byte_order, _base, _nowrite) \ | |
3c8ebbc8 MD |
692 | { \ |
693 | union { \ | |
694 | char __array[sizeof(_user_src)]; \ | |
695 | __typeof__(_user_src) __v; \ | |
696 | } __tmp_fetch; \ | |
697 | if (lib_ring_buffer_copy_from_user_check_nofault(__tmp_fetch.__array, \ | |
698 | &(_user_src), sizeof(_user_src))) \ | |
699 | memset(__tmp_fetch.__array, 0, sizeof(__tmp_fetch.__array)); \ | |
700 | _ctf_integer_ext_fetched(_type, _item, __tmp_fetch.__v, _byte_order, _base, _nowrite) \ | |
f127e61e | 701 | } |
e763dbf5 | 702 | |
f127e61e MD |
703 | #undef _ctf_integer_ext |
704 | #define _ctf_integer_ext(_type, _item, _user_src, _byte_order, _base, _user, _nowrite) \ | |
705 | _ctf_integer_ext_isuser##_user(_type, _item, _user_src, _byte_order, _base, _nowrite) | |
706 | ||
707 | #undef _ctf_array_encoded | |
3834b99f | 708 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
709 | { \ |
710 | unsigned long __ctf_tmp_ulong = (unsigned long) (_length); \ | |
711 | const void *__ctf_tmp_ptr = (_src); \ | |
712 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ | |
713 | __stack_data += sizeof(unsigned long); \ | |
6b272cda MD |
714 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
715 | __stack_data += sizeof(void *); \ | |
f127e61e MD |
716 | } |
717 | ||
43803cf2 MD |
718 | #undef _ctf_array_bitfield |
719 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
3834b99f | 720 | _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite) |
43803cf2 | 721 | |
f127e61e MD |
722 | #undef _ctf_sequence_encoded |
723 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 724 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
725 | { \ |
726 | unsigned long __ctf_tmp_ulong = (unsigned long) (_src_length); \ | |
727 | const void *__ctf_tmp_ptr = (_src); \ | |
728 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ | |
729 | __stack_data += sizeof(unsigned long); \ | |
6b272cda MD |
730 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
731 | __stack_data += sizeof(void *); \ | |
f127e61e MD |
732 | } |
733 | ||
43803cf2 MD |
734 | #undef _ctf_sequence_bitfield |
735 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
736 | _length_type, _src_length, \ | |
737 | _user, _nowrite) \ | |
738 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
739 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
740 | ||
f127e61e MD |
741 | #undef _ctf_string |
742 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
743 | { \ | |
1d84e8e7 MD |
744 | const void *__ctf_tmp_ptr = \ |
745 | ((_src) ? (_src) : __LTTNG_NULL_STRING); \ | |
6b272cda MD |
746 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
747 | __stack_data += sizeof(void *); \ | |
f127e61e | 748 | } |
c6e3f225 | 749 | |
141ddf28 MD |
750 | #undef _ctf_enum |
751 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
752 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
753 | ||
e763dbf5 | 754 | #undef TP_PROTO |
f127e61e | 755 | #define TP_PROTO(...) __VA_ARGS__ |
e763dbf5 | 756 | |
f127e61e MD |
757 | #undef TP_FIELDS |
758 | #define TP_FIELDS(...) __VA_ARGS__ | |
e763dbf5 | 759 | |
7ca580f8 MD |
760 | #undef TP_locvar |
761 | #define TP_locvar(...) __VA_ARGS__ | |
762 | ||
f127e61e | 763 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 764 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
765 | static inline \ |
766 | void __event_prepare_filter_stack__##_name(char *__stack_data, \ | |
767 | void *__tp_locvar) \ | |
e763dbf5 | 768 | { \ |
7ca580f8 MD |
769 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
770 | \ | |
f127e61e | 771 | _fields \ |
e763dbf5 MD |
772 | } |
773 | ||
f127e61e | 774 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 775 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
776 | static inline \ |
777 | void __event_prepare_filter_stack__##_name(char *__stack_data, \ | |
778 | void *__tp_locvar, _proto) \ | |
d3de7f14 | 779 | { \ |
7ca580f8 MD |
780 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
781 | \ | |
f127e61e | 782 | _fields \ |
d3de7f14 MD |
783 | } |
784 | ||
e763dbf5 MD |
785 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
786 | ||
e763dbf5 | 787 | /* |
f127e61e | 788 | * Stage 5 of the trace events. |
40652b65 | 789 | * |
f127e61e | 790 | * Create static inline function that calculates event payload alignment. |
3c4ffab9 MD |
791 | */ |
792 | ||
f127e61e | 793 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 MD |
794 | #include <probes/lttng-events-reset.h> |
795 | #include <probes/lttng-events-write.h> | |
3c4ffab9 | 796 | |
f127e61e MD |
797 | #undef _ctf_integer_ext |
798 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ | |
799 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
3c4ffab9 | 800 | |
f127e61e | 801 | #undef _ctf_array_encoded |
3834b99f | 802 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e | 803 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); |
3c4ffab9 | 804 | |
43803cf2 MD |
805 | #undef _ctf_array_bitfield |
806 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
3834b99f | 807 | _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite) |
43803cf2 | 808 | |
f127e61e MD |
809 | #undef _ctf_sequence_encoded |
810 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 811 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
812 | __event_align = max_t(size_t, __event_align, lttng_alignof(_length_type)); \ |
813 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
64c796d8 | 814 | |
43803cf2 MD |
815 | #undef _ctf_sequence_bitfield |
816 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
817 | _length_type, _src_length, \ | |
818 | _user, _nowrite) \ | |
819 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
820 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
821 | ||
f127e61e MD |
822 | #undef _ctf_string |
823 | #define _ctf_string(_item, _src, _user, _nowrite) | |
64c796d8 | 824 | |
141ddf28 MD |
825 | #undef _ctf_enum |
826 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
827 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
828 | ||
f64dd4be MD |
829 | #undef ctf_align |
830 | #define ctf_align(_type) \ | |
831 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
832 | ||
f127e61e MD |
833 | #undef TP_PROTO |
834 | #define TP_PROTO(...) __VA_ARGS__ | |
84da5206 | 835 | |
f127e61e MD |
836 | #undef TP_FIELDS |
837 | #define TP_FIELDS(...) __VA_ARGS__ | |
c6e3f225 | 838 | |
f127e61e MD |
839 | #undef TP_locvar |
840 | #define TP_locvar(...) __VA_ARGS__ | |
3c4ffab9 | 841 | |
f64dd4be MD |
842 | #undef ctf_custom_field |
843 | #define ctf_custom_field(_type, _item, _code) _code | |
844 | ||
845 | #undef ctf_custom_code | |
846 | #define ctf_custom_code(...) \ | |
847 | { \ | |
848 | __VA_ARGS__ \ | |
849 | } | |
850 | ||
f127e61e | 851 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 852 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
853 | static inline size_t __event_get_align__##_name(void *__tp_locvar, _proto) \ |
854 | { \ | |
855 | size_t __event_align = 1; \ | |
856 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ | |
857 | \ | |
858 | _fields \ | |
859 | return __event_align; \ | |
860 | } | |
3c4ffab9 | 861 | |
3bc29f0a | 862 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 863 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
864 | static inline size_t __event_get_align__##_name(void *__tp_locvar) \ |
865 | { \ | |
866 | size_t __event_align = 1; \ | |
867 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ | |
868 | \ | |
869 | _fields \ | |
870 | return __event_align; \ | |
871 | } | |
d3de7f14 | 872 | |
3c4ffab9 MD |
873 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
874 | ||
3c4ffab9 | 875 | /* |
f127e61e | 876 | * Stage 6 of tracepoint event generation. |
e763dbf5 | 877 | * |
f127e61e MD |
878 | * Create the probe function. This function calls event size calculation |
879 | * and writes event data into the buffer. | |
40652b65 MD |
880 | */ |
881 | ||
f127e61e | 882 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 MD |
883 | #include <probes/lttng-events-reset.h> |
884 | #include <probes/lttng-events-write.h> | |
c6e3f225 | 885 | |
f127e61e MD |
886 | #undef _ctf_integer_ext_fetched |
887 | #define _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
e763dbf5 | 888 | { \ |
f127e61e MD |
889 | _type __tmp = _src; \ |
890 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\ | |
aaa4004a | 891 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ |
f127e61e MD |
892 | } |
893 | ||
894 | #undef _ctf_integer_ext_isuser0 | |
895 | #define _ctf_integer_ext_isuser0(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
896 | _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) | |
897 | ||
898 | #undef _ctf_integer_ext_isuser1 | |
899 | #define _ctf_integer_ext_isuser1(_type, _item, _user_src, _byte_order, _base, _nowrite) \ | |
900 | { \ | |
3c8ebbc8 MD |
901 | union { \ |
902 | char __array[sizeof(_user_src)]; \ | |
903 | __typeof__(_user_src) __v; \ | |
904 | } __tmp_fetch; \ | |
905 | if (lib_ring_buffer_copy_from_user_check_nofault(__tmp_fetch.__array, \ | |
906 | &(_user_src), sizeof(_user_src))) \ | |
907 | memset(__tmp_fetch.__array, 0, sizeof(__tmp_fetch.__array)); \ | |
908 | _ctf_integer_ext_fetched(_type, _item, __tmp_fetch.__v, _byte_order, _base, _nowrite) \ | |
f127e61e MD |
909 | } |
910 | ||
911 | #undef _ctf_integer_ext | |
912 | #define _ctf_integer_ext(_type, _item, _user_src, _byte_order, _base, _user, _nowrite) \ | |
913 | _ctf_integer_ext_isuser##_user(_type, _item, _user_src, _byte_order, _base, _nowrite) | |
914 | ||
915 | #undef _ctf_array_encoded | |
3834b99f | 916 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
917 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ |
918 | if (_user) { \ | |
919 | __chan->ops->event_write_from_user(&__ctx, _src, sizeof(_type) * (_length)); \ | |
920 | } else { \ | |
921 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); \ | |
922 | } | |
923 | ||
43803cf2 MD |
924 | #if (__BYTE_ORDER == __LITTLE_ENDIAN) |
925 | #undef _ctf_array_bitfield | |
926 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
927 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
928 | if (_user) { \ | |
929 | __chan->ops->event_write_from_user(&__ctx, _src, sizeof(_type) * (_length)); \ | |
930 | } else { \ | |
931 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); \ | |
932 | } | |
933 | #else /* #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
934 | /* | |
935 | * For big endian, we need to byteswap into little endian. | |
936 | */ | |
937 | #undef _ctf_array_bitfield | |
938 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
939 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
940 | { \ | |
941 | size_t _i; \ | |
942 | \ | |
943 | for (_i = 0; _i < (_length); _i++) { \ | |
944 | _type _tmp; \ | |
945 | \ | |
946 | if (_user) { \ | |
947 | if (get_user(_tmp, (_type *) _src + _i)) \ | |
948 | _tmp = 0; \ | |
949 | } else { \ | |
950 | _tmp = ((_type *) _src)[_i]; \ | |
951 | } \ | |
952 | switch (sizeof(_type)) { \ | |
953 | case 1: \ | |
954 | break; \ | |
955 | case 2: \ | |
956 | _tmp = cpu_to_le16(_tmp); \ | |
957 | break; \ | |
958 | case 4: \ | |
959 | _tmp = cpu_to_le32(_tmp); \ | |
960 | break; \ | |
961 | case 8: \ | |
962 | _tmp = cpu_to_le64(_tmp); \ | |
963 | break; \ | |
964 | default: \ | |
965 | BUG_ON(1); \ | |
966 | } \ | |
967 | __chan->ops->event_write(&__ctx, &_tmp, sizeof(_type)); \ | |
968 | } \ | |
969 | } | |
970 | #endif /* #else #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
971 | ||
f127e61e MD |
972 | #undef _ctf_sequence_encoded |
973 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 974 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
84da5206 | 975 | { \ |
114667d5 | 976 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx]; \ |
f127e61e MD |
977 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
978 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
84da5206 | 979 | } \ |
f127e61e MD |
980 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ |
981 | if (_user) { \ | |
982 | __chan->ops->event_write_from_user(&__ctx, _src, \ | |
983 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
984 | } else { \ | |
985 | __chan->ops->event_write(&__ctx, _src, \ | |
986 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
987 | } | |
988 | ||
43803cf2 MD |
989 | #if (__BYTE_ORDER == __LITTLE_ENDIAN) |
990 | #undef _ctf_sequence_bitfield | |
991 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
992 | _length_type, _src_length, \ | |
993 | _user, _nowrite) \ | |
994 | { \ | |
114667d5 | 995 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx] * sizeof(_type) * CHAR_BIT; \ |
43803cf2 MD |
996 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
997 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
998 | } \ | |
999 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
1000 | if (_user) { \ | |
1001 | __chan->ops->event_write_from_user(&__ctx, _src, \ | |
1002 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
1003 | } else { \ | |
1004 | __chan->ops->event_write(&__ctx, _src, \ | |
1005 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
1006 | } | |
1007 | #else /* #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
1008 | /* | |
1009 | * For big endian, we need to byteswap into little endian. | |
1010 | */ | |
1011 | #undef _ctf_sequence_bitfield | |
1012 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
1013 | _length_type, _src_length, \ | |
1014 | _user, _nowrite) \ | |
1015 | { \ | |
114667d5 | 1016 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx] * sizeof(_type) * CHAR_BIT; \ |
43803cf2 MD |
1017 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
1018 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
1019 | } \ | |
1020 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
1021 | { \ | |
1022 | size_t _i, _length; \ | |
1023 | \ | |
1024 | _length = __get_dynamic_len(dest); \ | |
1025 | for (_i = 0; _i < _length; _i++) { \ | |
1026 | _type _tmp; \ | |
1027 | \ | |
1028 | if (_user) { \ | |
1029 | if (get_user(_tmp, (_type *) _src + _i)) \ | |
1030 | _tmp = 0; \ | |
1031 | } else { \ | |
1032 | _tmp = ((_type *) _src)[_i]; \ | |
1033 | } \ | |
1034 | switch (sizeof(_type)) { \ | |
1035 | case 1: \ | |
1036 | break; \ | |
1037 | case 2: \ | |
1038 | _tmp = cpu_to_le16(_tmp); \ | |
1039 | break; \ | |
1040 | case 4: \ | |
1041 | _tmp = cpu_to_le32(_tmp); \ | |
1042 | break; \ | |
1043 | case 8: \ | |
1044 | _tmp = cpu_to_le64(_tmp); \ | |
1045 | break; \ | |
1046 | default: \ | |
1047 | BUG_ON(1); \ | |
1048 | } \ | |
1049 | __chan->ops->event_write(&__ctx, &_tmp, sizeof(_type)); \ | |
1050 | } \ | |
1051 | } | |
1052 | #endif /* #else #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
1053 | ||
f127e61e MD |
1054 | #undef _ctf_string |
1055 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
f127e61e | 1056 | if (_user) { \ |
1d84e8e7 | 1057 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(*(_src))); \ |
f127e61e MD |
1058 | __chan->ops->event_strcpy_from_user(&__ctx, _src, \ |
1059 | __get_dynamic_len(dest)); \ | |
1060 | } else { \ | |
1d84e8e7 MD |
1061 | const char *__ctf_tmp_string = \ |
1062 | ((_src) ? (_src) : __LTTNG_NULL_STRING); \ | |
1063 | lib_ring_buffer_align_ctx(&__ctx, \ | |
1064 | lttng_alignof(*__ctf_tmp_string)); \ | |
1065 | __chan->ops->event_strcpy(&__ctx, __ctf_tmp_string, \ | |
f127e61e MD |
1066 | __get_dynamic_len(dest)); \ |
1067 | } | |
e763dbf5 | 1068 | |
141ddf28 MD |
1069 | #undef _ctf_enum |
1070 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
1071 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
f64dd4be MD |
1072 | |
1073 | #undef ctf_align | |
1074 | #define ctf_align(_type) \ | |
1075 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); | |
1076 | ||
1077 | #undef ctf_custom_field | |
1078 | #define ctf_custom_field(_type, _item, _code) _code | |
1079 | ||
1080 | #undef ctf_custom_code | |
1081 | #define ctf_custom_code(...) \ | |
1082 | { \ | |
1083 | __VA_ARGS__ \ | |
1084 | } | |
1085 | ||
e763dbf5 | 1086 | /* Beware: this get len actually consumes the len value */ |
f127e61e | 1087 | #undef __get_dynamic_len |
114667d5 | 1088 | #define __get_dynamic_len(field) this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx++] |
e763dbf5 MD |
1089 | |
1090 | #undef TP_PROTO | |
f127e61e | 1091 | #define TP_PROTO(...) __VA_ARGS__ |
e763dbf5 MD |
1092 | |
1093 | #undef TP_ARGS | |
f127e61e | 1094 | #define TP_ARGS(...) __VA_ARGS__ |
e763dbf5 | 1095 | |
f127e61e MD |
1096 | #undef TP_FIELDS |
1097 | #define TP_FIELDS(...) __VA_ARGS__ | |
e763dbf5 | 1098 | |
7ca580f8 MD |
1099 | #undef TP_locvar |
1100 | #define TP_locvar(...) __VA_ARGS__ | |
1101 | ||
265822ae MD |
1102 | #undef TP_code_pre |
1103 | #define TP_code_pre(...) __VA_ARGS__ | |
1104 | ||
1105 | #undef TP_code_post | |
1106 | #define TP_code_post(...) __VA_ARGS__ | |
7ca580f8 | 1107 | |
c337ddc2 MD |
1108 | /* |
1109 | * For state dump, check that "session" argument (mandatory) matches the | |
1110 | * session this event belongs to. Ensures that we write state dump data only | |
1111 | * into the started session, not into all sessions. | |
1112 | */ | |
1113 | #ifdef TP_SESSION_CHECK | |
1114 | #define _TP_SESSION_CHECK(session, csession) (session == csession) | |
1115 | #else /* TP_SESSION_CHECK */ | |
1116 | #define _TP_SESSION_CHECK(session, csession) 1 | |
1117 | #endif /* TP_SESSION_CHECK */ | |
1118 | ||
f9771d39 | 1119 | /* |
f127e61e MD |
1120 | * Using twice size for filter stack data to hold size and pointer for |
1121 | * each field (worse case). For integers, max size required is 64-bit. | |
1122 | * Same for double-precision floats. Those fit within | |
1123 | * 2*sizeof(unsigned long) for all supported architectures. | |
1124 | * Perform UNION (||) of filter runtime list. | |
f9771d39 | 1125 | */ |
3bc29f0a | 1126 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 1127 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
e763dbf5 MD |
1128 | static void __event_probe__##_name(void *__data, _proto) \ |
1129 | { \ | |
7ca580f8 | 1130 | struct probe_local_vars { _locvar }; \ |
a90917c3 | 1131 | struct lttng_event *__event = __data; \ |
79150a49 JD |
1132 | struct lttng_probe_ctx __lttng_probe_ctx = { \ |
1133 | .event = __event, \ | |
ccecf3fb | 1134 | .interruptible = !irqs_disabled(), \ |
79150a49 | 1135 | }; \ |
a90917c3 | 1136 | struct lttng_channel *__chan = __event->chan; \ |
e0130fab | 1137 | struct lttng_session *__session = __chan->session; \ |
aaa4004a | 1138 | struct lib_ring_buffer_ctx __ctx; \ |
114667d5 MD |
1139 | ssize_t __event_len; \ |
1140 | size_t __event_align; \ | |
ec0a7fba | 1141 | size_t __orig_dynamic_len_offset, __dynamic_len_idx __attribute__((unused)); \ |
f127e61e | 1142 | union { \ |
114667d5 | 1143 | size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)]; \ |
f127e61e MD |
1144 | char __filter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \ |
1145 | } __stackvar; \ | |
e763dbf5 | 1146 | int __ret; \ |
7ca580f8 MD |
1147 | struct probe_local_vars __tp_locvar; \ |
1148 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
1149 | &__tp_locvar; \ | |
d1f652f8 | 1150 | struct lttng_id_tracker_rcu *__lf; \ |
e763dbf5 | 1151 | \ |
e0130fab | 1152 | if (!_TP_SESSION_CHECK(session, __session)) \ |
c337ddc2 | 1153 | return; \ |
a8f2d0c7 | 1154 | if (unlikely(!READ_ONCE(__session->active))) \ |
e64957da | 1155 | return; \ |
a8f2d0c7 | 1156 | if (unlikely(!READ_ONCE(__chan->enabled))) \ |
e64957da | 1157 | return; \ |
a8f2d0c7 | 1158 | if (unlikely(!READ_ONCE(__event->enabled))) \ |
52fc2e1f | 1159 | return; \ |
d1f652f8 MD |
1160 | __lf = lttng_rcu_dereference(__session->pid_tracker.p); \ |
1161 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, current->tgid))) \ | |
1162 | return; \ | |
1163 | __lf = lttng_rcu_dereference(__session->vpid_tracker.p); \ | |
1164 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, task_tgid_vnr(current)))) \ | |
1165 | return; \ | |
1166 | __lf = lttng_rcu_dereference(__session->uid_tracker.p); \ | |
1167 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1168 | lttng_current_uid()))) \ |
d1f652f8 MD |
1169 | return; \ |
1170 | __lf = lttng_rcu_dereference(__session->vuid_tracker.p); \ | |
1171 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1172 | lttng_current_vuid()))) \ |
d1f652f8 MD |
1173 | return; \ |
1174 | __lf = lttng_rcu_dereference(__session->gid_tracker.p); \ | |
1175 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1176 | lttng_current_gid()))) \ |
d1f652f8 MD |
1177 | return; \ |
1178 | __lf = lttng_rcu_dereference(__session->vgid_tracker.p); \ | |
1179 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1180 | lttng_current_vgid()))) \ |
e0130fab | 1181 | return; \ |
114667d5 MD |
1182 | __orig_dynamic_len_offset = this_cpu_ptr(<tng_dynamic_len_stack)->offset; \ |
1183 | __dynamic_len_idx = __orig_dynamic_len_offset; \ | |
265822ae | 1184 | _code_pre \ |
f127e61e MD |
1185 | if (unlikely(!list_empty(&__event->bytecode_runtime_head))) { \ |
1186 | struct lttng_bytecode_runtime *bc_runtime; \ | |
1187 | int __filter_record = __event->has_enablers_without_bytecode; \ | |
1188 | \ | |
1189 | __event_prepare_filter_stack__##_name(__stackvar.__filter_stack_data, \ | |
1190 | tp_locvar, _args); \ | |
7a09dcb7 | 1191 | lttng_list_for_each_entry_rcu(bc_runtime, &__event->bytecode_runtime_head, node) { \ |
79150a49 | 1192 | if (unlikely(bc_runtime->filter(bc_runtime, &__lttng_probe_ctx, \ |
8904bcfa | 1193 | __stackvar.__filter_stack_data) & LTTNG_FILTER_RECORD_FLAG)) { \ |
f127e61e | 1194 | __filter_record = 1; \ |
8904bcfa FD |
1195 | break; \ |
1196 | } \ | |
f127e61e MD |
1197 | } \ |
1198 | if (likely(!__filter_record)) \ | |
265822ae | 1199 | goto __post; \ |
f127e61e | 1200 | } \ |
114667d5 MD |
1201 | __event_len = __event_get_size__##_name(tp_locvar, _args); \ |
1202 | if (unlikely(__event_len < 0)) { \ | |
1203 | lib_ring_buffer_lost_event_too_big(__chan->chan); \ | |
1204 | goto __post; \ | |
1205 | } \ | |
7ca580f8 | 1206 | __event_align = __event_get_align__##_name(tp_locvar, _args); \ |
79150a49 | 1207 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, &__lttng_probe_ctx, __event_len, \ |
e763dbf5 | 1208 | __event_align, -1); \ |
aaa4004a | 1209 | __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ |
e763dbf5 | 1210 | if (__ret < 0) \ |
265822ae | 1211 | goto __post; \ |
f127e61e | 1212 | _fields \ |
aaa4004a | 1213 | __chan->ops->event_commit(&__ctx); \ |
265822ae MD |
1214 | __post: \ |
1215 | _code_post \ | |
114667d5 MD |
1216 | barrier(); /* use before un-reserve. */ \ |
1217 | this_cpu_ptr(<tng_dynamic_len_stack)->offset = __orig_dynamic_len_offset; \ | |
265822ae | 1218 | return; \ |
e763dbf5 MD |
1219 | } |
1220 | ||
3bc29f0a | 1221 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 1222 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f7bdf4db MD |
1223 | static void __event_probe__##_name(void *__data) \ |
1224 | { \ | |
7ca580f8 | 1225 | struct probe_local_vars { _locvar }; \ |
a90917c3 | 1226 | struct lttng_event *__event = __data; \ |
79150a49 JD |
1227 | struct lttng_probe_ctx __lttng_probe_ctx = { \ |
1228 | .event = __event, \ | |
ccecf3fb | 1229 | .interruptible = !irqs_disabled(), \ |
79150a49 | 1230 | }; \ |
a90917c3 | 1231 | struct lttng_channel *__chan = __event->chan; \ |
e0130fab | 1232 | struct lttng_session *__session = __chan->session; \ |
f7bdf4db | 1233 | struct lib_ring_buffer_ctx __ctx; \ |
114667d5 MD |
1234 | ssize_t __event_len; \ |
1235 | size_t __event_align; \ | |
ec0a7fba | 1236 | size_t __orig_dynamic_len_offset, __dynamic_len_idx __attribute__((unused)); \ |
f127e61e | 1237 | union { \ |
114667d5 | 1238 | size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)]; \ |
f127e61e MD |
1239 | char __filter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \ |
1240 | } __stackvar; \ | |
f7bdf4db | 1241 | int __ret; \ |
7ca580f8 MD |
1242 | struct probe_local_vars __tp_locvar; \ |
1243 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
1244 | &__tp_locvar; \ | |
d1f652f8 | 1245 | struct lttng_id_tracker_rcu *__lf; \ |
f7bdf4db | 1246 | \ |
e0130fab | 1247 | if (!_TP_SESSION_CHECK(session, __session)) \ |
c337ddc2 | 1248 | return; \ |
a8f2d0c7 | 1249 | if (unlikely(!READ_ONCE(__session->active))) \ |
f7bdf4db | 1250 | return; \ |
a8f2d0c7 | 1251 | if (unlikely(!READ_ONCE(__chan->enabled))) \ |
f7bdf4db | 1252 | return; \ |
a8f2d0c7 | 1253 | if (unlikely(!READ_ONCE(__event->enabled))) \ |
f7bdf4db | 1254 | return; \ |
d1f652f8 MD |
1255 | __lf = lttng_rcu_dereference(__session->pid_tracker.p); \ |
1256 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, current->tgid))) \ | |
1257 | return; \ | |
1258 | __lf = lttng_rcu_dereference(__session->vpid_tracker.p); \ | |
1259 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, task_tgid_vnr(current)))) \ | |
1260 | return; \ | |
1261 | __lf = lttng_rcu_dereference(__session->uid_tracker.p); \ | |
1262 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1263 | lttng_current_uid()))) \ |
d1f652f8 MD |
1264 | return; \ |
1265 | __lf = lttng_rcu_dereference(__session->vuid_tracker.p); \ | |
1266 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1267 | lttng_current_vuid()))) \ |
d1f652f8 MD |
1268 | return; \ |
1269 | __lf = lttng_rcu_dereference(__session->gid_tracker.p); \ | |
1270 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1271 | lttng_current_gid()))) \ |
d1f652f8 MD |
1272 | return; \ |
1273 | __lf = lttng_rcu_dereference(__session->vgid_tracker.p); \ | |
1274 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1275 | lttng_current_vgid()))) \ |
e0130fab | 1276 | return; \ |
114667d5 MD |
1277 | __orig_dynamic_len_offset = this_cpu_ptr(<tng_dynamic_len_stack)->offset; \ |
1278 | __dynamic_len_idx = __orig_dynamic_len_offset; \ | |
265822ae | 1279 | _code_pre \ |
f127e61e MD |
1280 | if (unlikely(!list_empty(&__event->bytecode_runtime_head))) { \ |
1281 | struct lttng_bytecode_runtime *bc_runtime; \ | |
1282 | int __filter_record = __event->has_enablers_without_bytecode; \ | |
1283 | \ | |
1284 | __event_prepare_filter_stack__##_name(__stackvar.__filter_stack_data, \ | |
1285 | tp_locvar); \ | |
7a09dcb7 | 1286 | lttng_list_for_each_entry_rcu(bc_runtime, &__event->bytecode_runtime_head, node) { \ |
79150a49 | 1287 | if (unlikely(bc_runtime->filter(bc_runtime, &__lttng_probe_ctx, \ |
8904bcfa | 1288 | __stackvar.__filter_stack_data) & LTTNG_FILTER_RECORD_FLAG)) { \ |
f127e61e | 1289 | __filter_record = 1; \ |
8904bcfa FD |
1290 | break; \ |
1291 | } \ | |
f127e61e MD |
1292 | } \ |
1293 | if (likely(!__filter_record)) \ | |
265822ae | 1294 | goto __post; \ |
f127e61e | 1295 | } \ |
114667d5 MD |
1296 | __event_len = __event_get_size__##_name(tp_locvar); \ |
1297 | if (unlikely(__event_len < 0)) { \ | |
1298 | lib_ring_buffer_lost_event_too_big(__chan->chan); \ | |
1299 | goto __post; \ | |
1300 | } \ | |
7ca580f8 | 1301 | __event_align = __event_get_align__##_name(tp_locvar); \ |
79150a49 | 1302 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, &__lttng_probe_ctx, __event_len, \ |
f7bdf4db MD |
1303 | __event_align, -1); \ |
1304 | __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ | |
1305 | if (__ret < 0) \ | |
265822ae | 1306 | goto __post; \ |
f127e61e | 1307 | _fields \ |
f7bdf4db | 1308 | __chan->ops->event_commit(&__ctx); \ |
265822ae MD |
1309 | __post: \ |
1310 | _code_post \ | |
114667d5 MD |
1311 | barrier(); /* use before un-reserve. */ \ |
1312 | this_cpu_ptr(<tng_dynamic_len_stack)->offset = __orig_dynamic_len_offset; \ | |
265822ae | 1313 | return; \ |
f7bdf4db MD |
1314 | } |
1315 | ||
e763dbf5 MD |
1316 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
1317 | ||
f127e61e MD |
1318 | #undef __get_dynamic_len |
1319 | ||
1320 | /* | |
1321 | * Stage 7 of the trace events. | |
1322 | * | |
1323 | * Create event descriptions. | |
1324 | */ | |
1325 | ||
1326 | /* Named field types must be defined in lttng-types.h */ | |
1327 | ||
ba012e22 | 1328 | #include <probes/lttng-events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
f127e61e MD |
1329 | |
1330 | #ifndef TP_PROBE_CB | |
1331 | #define TP_PROBE_CB(_template) &__event_probe__##_template | |
1332 | #endif | |
1333 | ||
1334 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
1335 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
1336 | static const struct lttng_event_desc __event_desc___##_map = { \ | |
1337 | .fields = __event_fields___##_template, \ | |
1338 | .name = #_map, \ | |
1339 | .kname = #_name, \ | |
1340 | .probe_callback = (void *) TP_PROBE_CB(_template), \ | |
1341 | .nr_fields = ARRAY_SIZE(__event_fields___##_template), \ | |
1342 | .owner = THIS_MODULE, \ | |
1343 | }; | |
1344 | ||
1345 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
1346 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
1347 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) | |
1348 | ||
1349 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
1350 | ||
1351 | /* | |
1352 | * Stage 8 of the trace events. | |
1353 | * | |
1354 | * Create an array of event description pointers. | |
1355 | */ | |
1356 | ||
ba012e22 | 1357 | #include <probes/lttng-events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
f127e61e MD |
1358 | |
1359 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
1360 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
1361 | &__event_desc___##_map, | |
1362 | ||
1363 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
1364 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
1365 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) | |
1366 | ||
1367 | #define TP_ID1(_token, _system) _token##_system | |
1368 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1369 | ||
1370 | static const struct lttng_event_desc *TP_ID(__event_desc___, TRACE_SYSTEM)[] = { | |
1371 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
1372 | }; | |
1373 | ||
1374 | #undef TP_ID1 | |
1375 | #undef TP_ID | |
1376 | ||
1377 | /* | |
1378 | * Stage 9 of the trace events. | |
1379 | * | |
1380 | * Create a toplevel descriptor for the whole probe. | |
1381 | */ | |
1382 | ||
1383 | #define TP_ID1(_token, _system) _token##_system | |
1384 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1385 | ||
1386 | /* non-const because list head will be modified when registered. */ | |
1387 | static __used struct lttng_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = { | |
1388 | .provider = __stringify(TRACE_SYSTEM), | |
1389 | .event_desc = TP_ID(__event_desc___, TRACE_SYSTEM), | |
1390 | .nr_events = ARRAY_SIZE(TP_ID(__event_desc___, TRACE_SYSTEM)), | |
1391 | .head = { NULL, NULL }, | |
1392 | .lazy_init_head = { NULL, NULL }, | |
1393 | .lazy = 0, | |
1394 | }; | |
1395 | ||
1396 | #undef TP_ID1 | |
1397 | #undef TP_ID | |
1398 | ||
3afe7aac | 1399 | /* |
c099397a | 1400 | * Stage 10 of the trace events. |
3afe7aac MD |
1401 | * |
1402 | * Register/unregister probes at module load/unload. | |
1403 | */ | |
1404 | ||
ba012e22 | 1405 | #include <probes/lttng-events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
3afe7aac MD |
1406 | |
1407 | #define TP_ID1(_token, _system) _token##_system | |
1408 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1409 | #define module_init_eval1(_token, _system) module_init(_token##_system) | |
1410 | #define module_init_eval(_token, _system) module_init_eval1(_token, _system) | |
1411 | #define module_exit_eval1(_token, _system) module_exit(_token##_system) | |
1412 | #define module_exit_eval(_token, _system) module_exit_eval1(_token, _system) | |
1413 | ||
2655f9ad | 1414 | #ifndef TP_MODULE_NOINIT |
3afe7aac MD |
1415 | static int TP_ID(__lttng_events_init__, TRACE_SYSTEM)(void) |
1416 | { | |
263b6c88 | 1417 | wrapper_vmalloc_sync_mappings(); |
a90917c3 | 1418 | return lttng_probe_register(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
1419 | } |
1420 | ||
3afe7aac MD |
1421 | static void TP_ID(__lttng_events_exit__, TRACE_SYSTEM)(void) |
1422 | { | |
a90917c3 | 1423 | lttng_probe_unregister(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
1424 | } |
1425 | ||
2655f9ad MD |
1426 | #ifndef TP_MODULE_NOAUTOLOAD |
1427 | module_init_eval(__lttng_events_init__, TRACE_SYSTEM); | |
3afe7aac | 1428 | module_exit_eval(__lttng_events_exit__, TRACE_SYSTEM); |
259b6cb3 | 1429 | #endif |
3afe7aac | 1430 | |
2655f9ad MD |
1431 | #endif |
1432 | ||
3afe7aac MD |
1433 | #undef module_init_eval |
1434 | #undef module_exit_eval | |
1435 | #undef TP_ID1 | |
1436 | #undef TP_ID | |
177b3692 MD |
1437 | |
1438 | #undef TP_PROTO | |
1439 | #undef TP_ARGS |