Commit | Line | Data |
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9f36eaed MJ |
1 | /* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1) |
2 | * | |
451e462f | 3 | * lttng-tracepoint-event-impl.h |
17baffe2 MD |
4 | * |
5 | * Copyright (C) 2009 Steven Rostedt <rostedt@goodmis.org> | |
f127e61e | 6 | * Copyright (C) 2009-2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
17baffe2 | 7 | */ |
f127e61e | 8 | |
d28686c1 | 9 | #include <linux/uaccess.h> |
d0dd2ecb | 10 | #include <linux/debugfs.h> |
f127e61e | 11 | #include <linux/rculist.h> |
43803cf2 | 12 | #include <asm/byteorder.h> |
bf1a9179 | 13 | #include <linux/swab.h> |
8d43abb7 MD |
14 | |
15 | #include <probes/lttng.h> | |
16 | #include <probes/lttng-types.h> | |
17 | #include <probes/lttng-probe-user.h> | |
18 | #include <wrapper/vmalloc.h> /* for wrapper_vmalloc_sync_all() */ | |
19 | #include <wrapper/ringbuffer/frontend_types.h> | |
3c8ebbc8 | 20 | #include <wrapper/ringbuffer/backend.h> |
8d43abb7 | 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 | ||
63629d86 FD |
173 | /* |
174 | * Stage 1.2 of the trace trigger. | |
175 | * | |
176 | * Create dummy trace prototypes for each event class, and for each used | |
177 | * template. This will allow checking whether the prototypes from the | |
178 | * class and the instance using the class actually match. | |
179 | */ | |
180 | ||
181 | #include <probes/lttng-events-reset.h> /* Reset all macros within TRACE_EVENT */ | |
182 | ||
183 | #undef TP_PROTO | |
184 | #define TP_PROTO(...) __VA_ARGS__ | |
185 | ||
186 | #undef TP_ARGS | |
187 | #define TP_ARGS(...) __VA_ARGS__ | |
188 | ||
189 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
190 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
191 | void __trigger_template_proto___##_template(_proto); | |
192 | ||
193 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
194 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
195 | void __trigger_template_proto___##_template(void); | |
196 | ||
197 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE | |
198 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ | |
199 | void __trigger_template_proto___##_name(_proto); | |
200 | ||
201 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS | |
202 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ | |
203 | void __trigger_template_proto___##_name(void); | |
204 | ||
205 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
206 | ||
207 | ||
141ddf28 MD |
208 | /* |
209 | * Stage 1.2 of tracepoint event generation | |
210 | * | |
211 | * Unfolding the enums | |
212 | */ | |
213 | #include <probes/lttng-events-reset.h> /* Reset all macros within TRACE_EVENT */ | |
214 | ||
215 | /* Enumeration entry (single value) */ | |
216 | #undef ctf_enum_value | |
217 | #define ctf_enum_value(_string, _value) \ | |
218 | { \ | |
219 | .start = { \ | |
220 | .signedness = lttng_is_signed_type(__typeof__(_value)), \ | |
221 | .value = lttng_is_signed_type(__typeof__(_value)) ? \ | |
222 | (long long) (_value) : (_value), \ | |
223 | }, \ | |
224 | .end = { \ | |
225 | .signedness = lttng_is_signed_type(__typeof__(_value)), \ | |
226 | .value = lttng_is_signed_type(__typeof__(_value)) ? \ | |
227 | (long long) (_value) : (_value), \ | |
228 | }, \ | |
229 | .string = (_string), \ | |
230 | }, | |
231 | ||
232 | /* Enumeration entry (range) */ | |
233 | #undef ctf_enum_range | |
234 | #define ctf_enum_range(_string, _range_start, _range_end) \ | |
235 | { \ | |
236 | .start = { \ | |
237 | .signedness = lttng_is_signed_type(__typeof__(_range_start)), \ | |
238 | .value = lttng_is_signed_type(__typeof__(_range_start)) ? \ | |
239 | (long long) (_range_start) : (_range_start), \ | |
240 | }, \ | |
241 | .end = { \ | |
242 | .signedness = lttng_is_signed_type(__typeof__(_range_end)), \ | |
243 | .value = lttng_is_signed_type(__typeof__(_range_end)) ? \ | |
244 | (long long) (_range_end) : (_range_end), \ | |
245 | }, \ | |
246 | .string = (_string), \ | |
247 | }, | |
248 | ||
08ad1061 PP |
249 | /* Enumeration entry (automatic value; follows the rules of CTF) */ |
250 | #undef ctf_enum_auto | |
251 | #define ctf_enum_auto(_string) \ | |
252 | { \ | |
253 | .start = { \ | |
254 | .signedness = -1, \ | |
255 | .value = -1, \ | |
256 | }, \ | |
257 | .end = { \ | |
258 | .signedness = -1, \ | |
259 | .value = -1, \ | |
260 | }, \ | |
261 | .string = (_string), \ | |
262 | .options = { \ | |
263 | .is_auto = 1, \ | |
264 | } \ | |
265 | }, | |
266 | ||
141ddf28 MD |
267 | #undef TP_ENUM_VALUES |
268 | #define TP_ENUM_VALUES(...) \ | |
269 | __VA_ARGS__ | |
270 | ||
271 | #undef LTTNG_TRACEPOINT_ENUM | |
272 | #define LTTNG_TRACEPOINT_ENUM(_name, _values) \ | |
273 | const struct lttng_enum_entry __enum_values__##_name[] = { \ | |
274 | _values \ | |
275 | }; | |
276 | ||
277 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
278 | ||
6db3d13b | 279 | /* |
c099397a | 280 | * Stage 2 of the trace events. |
6db3d13b MD |
281 | * |
282 | * Create event field type metadata section. | |
283 | * Each event produce an array of fields. | |
284 | */ | |
285 | ||
f127e61e | 286 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 MD |
287 | #include <probes/lttng-events-reset.h> |
288 | #include <probes/lttng-events-write.h> | |
289 | #include <probes/lttng-events-nowrite.h> | |
6db3d13b | 290 | |
f127e61e MD |
291 | #undef _ctf_integer_ext |
292 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ | |
c099397a MD |
293 | { \ |
294 | .name = #_item, \ | |
43803cf2 | 295 | .type = __type_integer(_type, 0, 0, -1, _byte_order, _base, none),\ |
f127e61e MD |
296 | .nowrite = _nowrite, \ |
297 | .user = _user, \ | |
c099397a | 298 | }, |
40652b65 | 299 | |
f127e61e | 300 | #undef _ctf_array_encoded |
3834b99f | 301 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
299338c8 | 302 | { \ |
c099397a MD |
303 | .name = #_item, \ |
304 | .type = \ | |
305 | { \ | |
299338c8 | 306 | .atype = atype_array, \ |
f127e61e | 307 | .u = \ |
c099397a | 308 | { \ |
f127e61e MD |
309 | .array = \ |
310 | { \ | |
3834b99f | 311 | .elem_type = __type_integer(_type, 0, 0, 0, _byte_order, _base, _encoding), \ |
f127e61e MD |
312 | .length = _length, \ |
313 | } \ | |
314 | } \ | |
299338c8 | 315 | }, \ |
f127e61e MD |
316 | .nowrite = _nowrite, \ |
317 | .user = _user, \ | |
299338c8 | 318 | }, |
40652b65 | 319 | |
43803cf2 MD |
320 | #undef _ctf_array_bitfield |
321 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
322 | { \ | |
323 | .name = #_item, \ | |
324 | .type = \ | |
325 | { \ | |
3834b99f | 326 | .atype = atype_array_bitfield, \ |
43803cf2 MD |
327 | .u = \ |
328 | { \ | |
329 | .array = \ | |
330 | { \ | |
331 | .elem_type = __type_integer(_type, 1, 1, 0, __LITTLE_ENDIAN, 10, none), \ | |
332 | .length = (_length) * sizeof(_type) * CHAR_BIT, \ | |
333 | .elem_alignment = lttng_alignof(_type), \ | |
334 | } \ | |
335 | } \ | |
336 | }, \ | |
337 | .nowrite = _nowrite, \ | |
338 | .user = _user, \ | |
339 | }, | |
340 | ||
341 | ||
f127e61e MD |
342 | #undef _ctf_sequence_encoded |
343 | #define _ctf_sequence_encoded(_type, _item, _src, \ | |
344 | _length_type, _src_length, _encoding, \ | |
57ede728 | 345 | _byte_order, _base, _user, _nowrite) \ |
299338c8 | 346 | { \ |
c099397a MD |
347 | .name = #_item, \ |
348 | .type = \ | |
349 | { \ | |
299338c8 | 350 | .atype = atype_sequence, \ |
f127e61e | 351 | .u = \ |
c099397a | 352 | { \ |
f127e61e MD |
353 | .sequence = \ |
354 | { \ | |
43803cf2 MD |
355 | .length_type = __type_integer(_length_type, 0, 0, 0, __BYTE_ORDER, 10, none), \ |
356 | .elem_type = __type_integer(_type, 0, 0, -1, _byte_order, _base, _encoding), \ | |
357 | }, \ | |
358 | }, \ | |
359 | }, \ | |
360 | .nowrite = _nowrite, \ | |
361 | .user = _user, \ | |
362 | }, | |
363 | ||
364 | #undef _ctf_sequence_bitfield | |
365 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
366 | _length_type, _src_length, \ | |
367 | _user, _nowrite) \ | |
368 | { \ | |
369 | .name = #_item, \ | |
370 | .type = \ | |
371 | { \ | |
3834b99f | 372 | .atype = atype_sequence_bitfield, \ |
43803cf2 MD |
373 | .u = \ |
374 | { \ | |
375 | .sequence = \ | |
376 | { \ | |
377 | .length_type = __type_integer(_length_type, 0, 0, 0, __BYTE_ORDER, 10, none), \ | |
378 | .elem_type = __type_integer(_type, 1, 1, 0, __LITTLE_ENDIAN, 10, none), \ | |
379 | .elem_alignment = lttng_alignof(_type), \ | |
f127e61e | 380 | }, \ |
c099397a | 381 | }, \ |
299338c8 | 382 | }, \ |
f127e61e MD |
383 | .nowrite = _nowrite, \ |
384 | .user = _user, \ | |
299338c8 | 385 | }, |
40652b65 | 386 | |
f127e61e MD |
387 | #undef _ctf_string |
388 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
299338c8 | 389 | { \ |
c099397a MD |
390 | .name = #_item, \ |
391 | .type = \ | |
392 | { \ | |
299338c8 | 393 | .atype = atype_string, \ |
f127e61e MD |
394 | .u = \ |
395 | { \ | |
396 | .basic = { .string = { .encoding = lttng_encode_UTF8 } } \ | |
397 | }, \ | |
299338c8 | 398 | }, \ |
f127e61e MD |
399 | .nowrite = _nowrite, \ |
400 | .user = _user, \ | |
299338c8 | 401 | }, |
1d12cebd | 402 | |
141ddf28 MD |
403 | #undef _ctf_enum |
404 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
405 | { \ | |
406 | .name = #_item, \ | |
407 | .type = { \ | |
408 | .atype = atype_enum, \ | |
409 | .u = { \ | |
410 | .basic = { \ | |
411 | .enumeration = { \ | |
412 | .desc = &__enum_##_name, \ | |
413 | .container_type = { \ | |
414 | .size = sizeof(_type) * CHAR_BIT, \ | |
415 | .alignment = lttng_alignof(_type) * CHAR_BIT, \ | |
416 | .signedness = lttng_is_signed_type(_type), \ | |
417 | .reverse_byte_order = 0, \ | |
418 | .base = 10, \ | |
419 | .encoding = lttng_encode_none, \ | |
420 | }, \ | |
421 | }, \ | |
422 | }, \ | |
423 | }, \ | |
424 | }, \ | |
425 | .nowrite = _nowrite, \ | |
426 | .user = _user, \ | |
427 | }, | |
f64dd4be MD |
428 | |
429 | #undef ctf_custom_field | |
430 | #define ctf_custom_field(_type, _item, _code) \ | |
431 | { \ | |
432 | .name = #_item, \ | |
433 | .type = { _type }, \ | |
434 | .nowrite = 0, \ | |
435 | .user = 0, \ | |
436 | }, | |
437 | ||
438 | #undef ctf_custom_type | |
439 | #define ctf_custom_type(...) __VA_ARGS__ | |
440 | ||
f127e61e MD |
441 | #undef TP_FIELDS |
442 | #define TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */ | |
1d12cebd | 443 | |
3bc29f0a | 444 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 445 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
0d1d4002 | 446 | static const struct lttng_event_field __event_fields___##_name[] = { \ |
f127e61e | 447 | _fields \ |
299338c8 MD |
448 | }; |
449 | ||
3bc29f0a | 450 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae MD |
451 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
452 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, PARAMS(_fields), _code_post) | |
f7bdf4db | 453 | |
141ddf28 MD |
454 | #undef LTTNG_TRACEPOINT_ENUM |
455 | #define LTTNG_TRACEPOINT_ENUM(_name, _values) \ | |
456 | static const struct lttng_enum_desc __enum_##_name = { \ | |
457 | .name = #_name, \ | |
458 | .entries = __enum_values__##_name, \ | |
459 | .nr_entries = ARRAY_SIZE(__enum_values__##_name), \ | |
460 | }; | |
461 | ||
299338c8 MD |
462 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
463 | ||
19c57fbf | 464 | /* |
c099397a | 465 | * Stage 3 of the trace events. |
19c57fbf MD |
466 | * |
467 | * Create probe callback prototypes. | |
468 | */ | |
469 | ||
f127e61e | 470 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 | 471 | #include <probes/lttng-events-reset.h> |
19c57fbf MD |
472 | |
473 | #undef TP_PROTO | |
f127e61e | 474 | #define TP_PROTO(...) __VA_ARGS__ |
19c57fbf | 475 | |
3bc29f0a | 476 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 477 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
19c57fbf MD |
478 | static void __event_probe__##_name(void *__data, _proto); |
479 | ||
3bc29f0a | 480 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 481 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f7bdf4db MD |
482 | static void __event_probe__##_name(void *__data); |
483 | ||
19c57fbf MD |
484 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
485 | ||
63629d86 FD |
486 | /* |
487 | * Stage 3.1 of the trace triggers. | |
488 | * | |
489 | * Create trigger probe callback prototypes. | |
490 | */ | |
491 | ||
492 | /* Reset all macros within TRACEPOINT_EVENT */ | |
493 | #include <probes/lttng-events-reset.h> | |
494 | ||
495 | #undef TP_PROTO | |
496 | #define TP_PROTO(...) __VA_ARGS__ | |
497 | ||
498 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE | |
499 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ | |
500 | static void __trigger_probe__##_name(void *__data, _proto); | |
501 | ||
502 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS | |
503 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ | |
504 | static void __trigger_probe__##_name(void *__data); | |
505 | ||
506 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
507 | ||
f7bdf4db MD |
508 | /* |
509 | * Stage 4 of the trace events. | |
510 | * | |
40652b65 MD |
511 | * Create static inline function that calculates event size. |
512 | */ | |
513 | ||
f127e61e | 514 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 MD |
515 | #include <probes/lttng-events-reset.h> |
516 | #include <probes/lttng-events-write.h> | |
6db3d13b | 517 | |
f127e61e MD |
518 | #undef _ctf_integer_ext |
519 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ | |
a90917c3 | 520 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
0d1d4002 | 521 | __event_len += sizeof(_type); |
6db3d13b | 522 | |
f127e61e | 523 | #undef _ctf_array_encoded |
3834b99f | 524 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
a90917c3 | 525 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
0d1d4002 | 526 | __event_len += sizeof(_type) * (_length); |
6db3d13b | 527 | |
43803cf2 MD |
528 | #undef _ctf_array_bitfield |
529 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
3834b99f | 530 | _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite) |
43803cf2 | 531 | |
f127e61e MD |
532 | #undef _ctf_sequence_encoded |
533 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 534 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
535 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_length_type)); \ |
536 | __event_len += sizeof(_length_type); \ | |
a90917c3 | 537 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
114667d5 MD |
538 | { \ |
539 | size_t __seqlen = (_src_length); \ | |
540 | \ | |
541 | if (unlikely(++this_cpu_ptr(<tng_dynamic_len_stack)->offset >= LTTNG_DYNAMIC_LEN_STACK_SIZE)) \ | |
542 | goto error; \ | |
543 | barrier(); /* reserve before use. */ \ | |
544 | this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = __seqlen; \ | |
545 | __event_len += sizeof(_type) * __seqlen; \ | |
546 | } | |
6db3d13b | 547 | |
43803cf2 MD |
548 | #undef _ctf_sequence_bitfield |
549 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
550 | _length_type, _src_length, \ | |
551 | _user, _nowrite) \ | |
552 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
553 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
554 | ||
d0255731 | 555 | /* |
f127e61e | 556 | * ctf_user_string includes \0. If returns 0, it faulted, so we set size to |
786b8312 | 557 | * 1 (\0 only). |
d0255731 | 558 | */ |
f127e61e MD |
559 | #undef _ctf_string |
560 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
114667d5 MD |
561 | if (unlikely(++this_cpu_ptr(<tng_dynamic_len_stack)->offset >= LTTNG_DYNAMIC_LEN_STACK_SIZE)) \ |
562 | goto error; \ | |
563 | barrier(); /* reserve before use. */ \ | |
564 | if (_user) { \ | |
565 | __event_len += this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = \ | |
96d0248a | 566 | max_t(size_t, lttng_strlen_user_inatomic(_src), 1); \ |
114667d5 MD |
567 | } else { \ |
568 | __event_len += this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = \ | |
1d84e8e7 | 569 | strlen((_src) ? (_src) : __LTTNG_NULL_STRING) + 1; \ |
114667d5 | 570 | } |
c6e3f225 | 571 | |
141ddf28 MD |
572 | #undef _ctf_enum |
573 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
574 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
575 | ||
f64dd4be MD |
576 | #undef ctf_align |
577 | #define ctf_align(_type) \ | |
578 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); | |
579 | ||
580 | #undef ctf_custom_field | |
581 | #define ctf_custom_field(_type, _item, _code) \ | |
582 | { \ | |
583 | _code \ | |
584 | } | |
585 | ||
586 | #undef ctf_custom_code | |
587 | #define ctf_custom_code(...) __VA_ARGS__ | |
588 | ||
0d1d4002 | 589 | #undef TP_PROTO |
f127e61e | 590 | #define TP_PROTO(...) __VA_ARGS__ |
6db3d13b | 591 | |
f127e61e MD |
592 | #undef TP_FIELDS |
593 | #define TP_FIELDS(...) __VA_ARGS__ | |
6db3d13b | 594 | |
7ca580f8 MD |
595 | #undef TP_locvar |
596 | #define TP_locvar(...) __VA_ARGS__ | |
597 | ||
3bc29f0a | 598 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 599 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
114667d5 | 600 | static inline ssize_t __event_get_size__##_name(void *__tp_locvar, _proto) \ |
0d1d4002 MD |
601 | { \ |
602 | size_t __event_len = 0; \ | |
d3de7f14 | 603 | unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \ |
7ca580f8 | 604 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
d3de7f14 | 605 | \ |
f127e61e | 606 | _fields \ |
d3de7f14 | 607 | return __event_len; \ |
114667d5 MD |
608 | \ |
609 | error: \ | |
610 | __attribute__((unused)); \ | |
611 | return -1; \ | |
d3de7f14 MD |
612 | } |
613 | ||
3bc29f0a | 614 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 615 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
114667d5 | 616 | static inline ssize_t __event_get_size__##_name(void *__tp_locvar) \ |
d3de7f14 MD |
617 | { \ |
618 | size_t __event_len = 0; \ | |
619 | unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \ | |
7ca580f8 | 620 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
0d1d4002 | 621 | \ |
f127e61e | 622 | _fields \ |
0d1d4002 | 623 | return __event_len; \ |
114667d5 MD |
624 | \ |
625 | error: \ | |
626 | __attribute__((unused)); \ | |
627 | return -1; \ | |
6db3d13b | 628 | } |
40652b65 MD |
629 | |
630 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
631 | ||
f127e61e | 632 | |
40652b65 | 633 | /* |
f127e61e | 634 | * Stage 4.1 of tracepoint event generation. |
e763dbf5 | 635 | * |
f127e61e MD |
636 | * Create static inline function that layout the filter stack data. |
637 | * We make both write and nowrite data available to the filter. | |
e763dbf5 MD |
638 | */ |
639 | ||
f127e61e | 640 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 MD |
641 | #include <probes/lttng-events-reset.h> |
642 | #include <probes/lttng-events-write.h> | |
643 | #include <probes/lttng-events-nowrite.h> | |
f127e61e MD |
644 | |
645 | #undef _ctf_integer_ext_fetched | |
646 | #define _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
647 | if (lttng_is_signed_type(_type)) { \ | |
648 | int64_t __ctf_tmp_int64; \ | |
649 | switch (sizeof(_type)) { \ | |
650 | case 1: \ | |
651 | { \ | |
652 | union { _type t; int8_t v; } __tmp = { (_type) (_src) }; \ | |
653 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ | |
654 | break; \ | |
655 | } \ | |
656 | case 2: \ | |
657 | { \ | |
658 | union { _type t; int16_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
659 | if (_byte_order != __BYTE_ORDER) \ |
660 | __swab16s(&__tmp.v); \ | |
f127e61e MD |
661 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
662 | break; \ | |
663 | } \ | |
664 | case 4: \ | |
665 | { \ | |
666 | union { _type t; int32_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
667 | if (_byte_order != __BYTE_ORDER) \ |
668 | __swab32s(&__tmp.v); \ | |
f127e61e MD |
669 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
670 | break; \ | |
671 | } \ | |
672 | case 8: \ | |
673 | { \ | |
674 | union { _type t; int64_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
675 | if (_byte_order != __BYTE_ORDER) \ |
676 | __swab64s(&__tmp.v); \ | |
f127e61e MD |
677 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
678 | break; \ | |
679 | } \ | |
680 | default: \ | |
681 | BUG_ON(1); \ | |
682 | }; \ | |
683 | memcpy(__stack_data, &__ctf_tmp_int64, sizeof(int64_t)); \ | |
684 | } else { \ | |
685 | uint64_t __ctf_tmp_uint64; \ | |
686 | switch (sizeof(_type)) { \ | |
687 | case 1: \ | |
688 | { \ | |
689 | union { _type t; uint8_t v; } __tmp = { (_type) (_src) }; \ | |
690 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ | |
691 | break; \ | |
692 | } \ | |
693 | case 2: \ | |
694 | { \ | |
695 | union { _type t; uint16_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
696 | if (_byte_order != __BYTE_ORDER) \ |
697 | __swab16s(&__tmp.v); \ | |
f127e61e MD |
698 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
699 | break; \ | |
700 | } \ | |
701 | case 4: \ | |
702 | { \ | |
703 | union { _type t; uint32_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
704 | if (_byte_order != __BYTE_ORDER) \ |
705 | __swab32s(&__tmp.v); \ | |
f127e61e MD |
706 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
707 | break; \ | |
708 | } \ | |
709 | case 8: \ | |
710 | { \ | |
711 | union { _type t; uint64_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
712 | if (_byte_order != __BYTE_ORDER) \ |
713 | __swab64s(&__tmp.v); \ | |
f127e61e MD |
714 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
715 | break; \ | |
716 | } \ | |
717 | default: \ | |
718 | BUG_ON(1); \ | |
719 | }; \ | |
720 | memcpy(__stack_data, &__ctf_tmp_uint64, sizeof(uint64_t)); \ | |
721 | } \ | |
722 | __stack_data += sizeof(int64_t); | |
723 | ||
724 | #undef _ctf_integer_ext_isuser0 | |
725 | #define _ctf_integer_ext_isuser0(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
726 | _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) | |
727 | ||
728 | #undef _ctf_integer_ext_isuser1 | |
729 | #define _ctf_integer_ext_isuser1(_type, _item, _user_src, _byte_order, _base, _nowrite) \ | |
3c8ebbc8 MD |
730 | { \ |
731 | union { \ | |
732 | char __array[sizeof(_user_src)]; \ | |
733 | __typeof__(_user_src) __v; \ | |
734 | } __tmp_fetch; \ | |
735 | if (lib_ring_buffer_copy_from_user_check_nofault(__tmp_fetch.__array, \ | |
736 | &(_user_src), sizeof(_user_src))) \ | |
737 | memset(__tmp_fetch.__array, 0, sizeof(__tmp_fetch.__array)); \ | |
738 | _ctf_integer_ext_fetched(_type, _item, __tmp_fetch.__v, _byte_order, _base, _nowrite) \ | |
f127e61e | 739 | } |
e763dbf5 | 740 | |
f127e61e MD |
741 | #undef _ctf_integer_ext |
742 | #define _ctf_integer_ext(_type, _item, _user_src, _byte_order, _base, _user, _nowrite) \ | |
743 | _ctf_integer_ext_isuser##_user(_type, _item, _user_src, _byte_order, _base, _nowrite) | |
744 | ||
745 | #undef _ctf_array_encoded | |
3834b99f | 746 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
747 | { \ |
748 | unsigned long __ctf_tmp_ulong = (unsigned long) (_length); \ | |
749 | const void *__ctf_tmp_ptr = (_src); \ | |
750 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ | |
751 | __stack_data += sizeof(unsigned long); \ | |
6b272cda MD |
752 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
753 | __stack_data += sizeof(void *); \ | |
f127e61e MD |
754 | } |
755 | ||
43803cf2 MD |
756 | #undef _ctf_array_bitfield |
757 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
3834b99f | 758 | _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite) |
43803cf2 | 759 | |
f127e61e MD |
760 | #undef _ctf_sequence_encoded |
761 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 762 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
763 | { \ |
764 | unsigned long __ctf_tmp_ulong = (unsigned long) (_src_length); \ | |
765 | const void *__ctf_tmp_ptr = (_src); \ | |
766 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ | |
767 | __stack_data += sizeof(unsigned long); \ | |
6b272cda MD |
768 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
769 | __stack_data += sizeof(void *); \ | |
f127e61e MD |
770 | } |
771 | ||
43803cf2 MD |
772 | #undef _ctf_sequence_bitfield |
773 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
774 | _length_type, _src_length, \ | |
775 | _user, _nowrite) \ | |
776 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
777 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
778 | ||
f127e61e MD |
779 | #undef _ctf_string |
780 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
781 | { \ | |
1d84e8e7 MD |
782 | const void *__ctf_tmp_ptr = \ |
783 | ((_src) ? (_src) : __LTTNG_NULL_STRING); \ | |
6b272cda MD |
784 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
785 | __stack_data += sizeof(void *); \ | |
f127e61e | 786 | } |
c6e3f225 | 787 | |
141ddf28 MD |
788 | #undef _ctf_enum |
789 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
790 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
791 | ||
e763dbf5 | 792 | #undef TP_PROTO |
f127e61e | 793 | #define TP_PROTO(...) __VA_ARGS__ |
e763dbf5 | 794 | |
f127e61e MD |
795 | #undef TP_FIELDS |
796 | #define TP_FIELDS(...) __VA_ARGS__ | |
e763dbf5 | 797 | |
7ca580f8 MD |
798 | #undef TP_locvar |
799 | #define TP_locvar(...) __VA_ARGS__ | |
800 | ||
f127e61e | 801 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 802 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
803 | static inline \ |
804 | void __event_prepare_filter_stack__##_name(char *__stack_data, \ | |
805 | void *__tp_locvar) \ | |
e763dbf5 | 806 | { \ |
7ca580f8 MD |
807 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
808 | \ | |
f127e61e | 809 | _fields \ |
e763dbf5 MD |
810 | } |
811 | ||
f127e61e | 812 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 813 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
814 | static inline \ |
815 | void __event_prepare_filter_stack__##_name(char *__stack_data, \ | |
816 | void *__tp_locvar, _proto) \ | |
d3de7f14 | 817 | { \ |
7ca580f8 MD |
818 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
819 | \ | |
f127e61e | 820 | _fields \ |
d3de7f14 MD |
821 | } |
822 | ||
e763dbf5 MD |
823 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
824 | ||
e763dbf5 | 825 | /* |
f127e61e | 826 | * Stage 5 of the trace events. |
40652b65 | 827 | * |
f127e61e | 828 | * Create static inline function that calculates event payload alignment. |
3c4ffab9 MD |
829 | */ |
830 | ||
f127e61e | 831 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 MD |
832 | #include <probes/lttng-events-reset.h> |
833 | #include <probes/lttng-events-write.h> | |
3c4ffab9 | 834 | |
f127e61e MD |
835 | #undef _ctf_integer_ext |
836 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ | |
837 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
3c4ffab9 | 838 | |
f127e61e | 839 | #undef _ctf_array_encoded |
3834b99f | 840 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e | 841 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); |
3c4ffab9 | 842 | |
43803cf2 MD |
843 | #undef _ctf_array_bitfield |
844 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
3834b99f | 845 | _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite) |
43803cf2 | 846 | |
f127e61e MD |
847 | #undef _ctf_sequence_encoded |
848 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 849 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
850 | __event_align = max_t(size_t, __event_align, lttng_alignof(_length_type)); \ |
851 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
64c796d8 | 852 | |
43803cf2 MD |
853 | #undef _ctf_sequence_bitfield |
854 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
855 | _length_type, _src_length, \ | |
856 | _user, _nowrite) \ | |
857 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
858 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
859 | ||
f127e61e MD |
860 | #undef _ctf_string |
861 | #define _ctf_string(_item, _src, _user, _nowrite) | |
64c796d8 | 862 | |
141ddf28 MD |
863 | #undef _ctf_enum |
864 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
865 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
866 | ||
f64dd4be MD |
867 | #undef ctf_align |
868 | #define ctf_align(_type) \ | |
869 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
870 | ||
f127e61e MD |
871 | #undef TP_PROTO |
872 | #define TP_PROTO(...) __VA_ARGS__ | |
84da5206 | 873 | |
f127e61e MD |
874 | #undef TP_FIELDS |
875 | #define TP_FIELDS(...) __VA_ARGS__ | |
c6e3f225 | 876 | |
f127e61e MD |
877 | #undef TP_locvar |
878 | #define TP_locvar(...) __VA_ARGS__ | |
3c4ffab9 | 879 | |
f64dd4be MD |
880 | #undef ctf_custom_field |
881 | #define ctf_custom_field(_type, _item, _code) _code | |
882 | ||
883 | #undef ctf_custom_code | |
884 | #define ctf_custom_code(...) \ | |
885 | { \ | |
886 | __VA_ARGS__ \ | |
887 | } | |
888 | ||
f127e61e | 889 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 890 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
891 | static inline size_t __event_get_align__##_name(void *__tp_locvar, _proto) \ |
892 | { \ | |
893 | size_t __event_align = 1; \ | |
894 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ | |
895 | \ | |
896 | _fields \ | |
897 | return __event_align; \ | |
898 | } | |
3c4ffab9 | 899 | |
3bc29f0a | 900 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 901 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
902 | static inline size_t __event_get_align__##_name(void *__tp_locvar) \ |
903 | { \ | |
904 | size_t __event_align = 1; \ | |
905 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ | |
906 | \ | |
907 | _fields \ | |
908 | return __event_align; \ | |
909 | } | |
d3de7f14 | 910 | |
3c4ffab9 MD |
911 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
912 | ||
3c4ffab9 | 913 | /* |
f127e61e | 914 | * Stage 6 of tracepoint event generation. |
e763dbf5 | 915 | * |
f127e61e MD |
916 | * Create the probe function. This function calls event size calculation |
917 | * and writes event data into the buffer. | |
40652b65 MD |
918 | */ |
919 | ||
f127e61e | 920 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 MD |
921 | #include <probes/lttng-events-reset.h> |
922 | #include <probes/lttng-events-write.h> | |
c6e3f225 | 923 | |
f127e61e MD |
924 | #undef _ctf_integer_ext_fetched |
925 | #define _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
e763dbf5 | 926 | { \ |
f127e61e MD |
927 | _type __tmp = _src; \ |
928 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\ | |
aaa4004a | 929 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ |
f127e61e MD |
930 | } |
931 | ||
932 | #undef _ctf_integer_ext_isuser0 | |
933 | #define _ctf_integer_ext_isuser0(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
934 | _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) | |
935 | ||
936 | #undef _ctf_integer_ext_isuser1 | |
937 | #define _ctf_integer_ext_isuser1(_type, _item, _user_src, _byte_order, _base, _nowrite) \ | |
938 | { \ | |
3c8ebbc8 MD |
939 | union { \ |
940 | char __array[sizeof(_user_src)]; \ | |
941 | __typeof__(_user_src) __v; \ | |
942 | } __tmp_fetch; \ | |
943 | if (lib_ring_buffer_copy_from_user_check_nofault(__tmp_fetch.__array, \ | |
944 | &(_user_src), sizeof(_user_src))) \ | |
945 | memset(__tmp_fetch.__array, 0, sizeof(__tmp_fetch.__array)); \ | |
946 | _ctf_integer_ext_fetched(_type, _item, __tmp_fetch.__v, _byte_order, _base, _nowrite) \ | |
f127e61e MD |
947 | } |
948 | ||
949 | #undef _ctf_integer_ext | |
950 | #define _ctf_integer_ext(_type, _item, _user_src, _byte_order, _base, _user, _nowrite) \ | |
951 | _ctf_integer_ext_isuser##_user(_type, _item, _user_src, _byte_order, _base, _nowrite) | |
952 | ||
953 | #undef _ctf_array_encoded | |
3834b99f | 954 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
955 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ |
956 | if (_user) { \ | |
957 | __chan->ops->event_write_from_user(&__ctx, _src, sizeof(_type) * (_length)); \ | |
958 | } else { \ | |
959 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); \ | |
960 | } | |
961 | ||
43803cf2 MD |
962 | #if (__BYTE_ORDER == __LITTLE_ENDIAN) |
963 | #undef _ctf_array_bitfield | |
964 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
965 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
966 | if (_user) { \ | |
967 | __chan->ops->event_write_from_user(&__ctx, _src, sizeof(_type) * (_length)); \ | |
968 | } else { \ | |
969 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); \ | |
970 | } | |
971 | #else /* #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
972 | /* | |
973 | * For big endian, we need to byteswap into little endian. | |
974 | */ | |
975 | #undef _ctf_array_bitfield | |
976 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
977 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
978 | { \ | |
979 | size_t _i; \ | |
980 | \ | |
981 | for (_i = 0; _i < (_length); _i++) { \ | |
982 | _type _tmp; \ | |
983 | \ | |
984 | if (_user) { \ | |
985 | if (get_user(_tmp, (_type *) _src + _i)) \ | |
986 | _tmp = 0; \ | |
987 | } else { \ | |
988 | _tmp = ((_type *) _src)[_i]; \ | |
989 | } \ | |
990 | switch (sizeof(_type)) { \ | |
991 | case 1: \ | |
992 | break; \ | |
993 | case 2: \ | |
994 | _tmp = cpu_to_le16(_tmp); \ | |
995 | break; \ | |
996 | case 4: \ | |
997 | _tmp = cpu_to_le32(_tmp); \ | |
998 | break; \ | |
999 | case 8: \ | |
1000 | _tmp = cpu_to_le64(_tmp); \ | |
1001 | break; \ | |
1002 | default: \ | |
1003 | BUG_ON(1); \ | |
1004 | } \ | |
1005 | __chan->ops->event_write(&__ctx, &_tmp, sizeof(_type)); \ | |
1006 | } \ | |
1007 | } | |
1008 | #endif /* #else #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
1009 | ||
f127e61e MD |
1010 | #undef _ctf_sequence_encoded |
1011 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 1012 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
84da5206 | 1013 | { \ |
114667d5 | 1014 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx]; \ |
f127e61e MD |
1015 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
1016 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
84da5206 | 1017 | } \ |
f127e61e MD |
1018 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ |
1019 | if (_user) { \ | |
1020 | __chan->ops->event_write_from_user(&__ctx, _src, \ | |
1021 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
1022 | } else { \ | |
1023 | __chan->ops->event_write(&__ctx, _src, \ | |
1024 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
1025 | } | |
1026 | ||
43803cf2 MD |
1027 | #if (__BYTE_ORDER == __LITTLE_ENDIAN) |
1028 | #undef _ctf_sequence_bitfield | |
1029 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
1030 | _length_type, _src_length, \ | |
1031 | _user, _nowrite) \ | |
1032 | { \ | |
114667d5 | 1033 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx] * sizeof(_type) * CHAR_BIT; \ |
43803cf2 MD |
1034 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
1035 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
1036 | } \ | |
1037 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
1038 | if (_user) { \ | |
1039 | __chan->ops->event_write_from_user(&__ctx, _src, \ | |
1040 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
1041 | } else { \ | |
1042 | __chan->ops->event_write(&__ctx, _src, \ | |
1043 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
1044 | } | |
1045 | #else /* #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
1046 | /* | |
1047 | * For big endian, we need to byteswap into little endian. | |
1048 | */ | |
1049 | #undef _ctf_sequence_bitfield | |
1050 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
1051 | _length_type, _src_length, \ | |
1052 | _user, _nowrite) \ | |
1053 | { \ | |
114667d5 | 1054 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx] * sizeof(_type) * CHAR_BIT; \ |
43803cf2 MD |
1055 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
1056 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
1057 | } \ | |
1058 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
1059 | { \ | |
1060 | size_t _i, _length; \ | |
1061 | \ | |
1062 | _length = __get_dynamic_len(dest); \ | |
1063 | for (_i = 0; _i < _length; _i++) { \ | |
1064 | _type _tmp; \ | |
1065 | \ | |
1066 | if (_user) { \ | |
1067 | if (get_user(_tmp, (_type *) _src + _i)) \ | |
1068 | _tmp = 0; \ | |
1069 | } else { \ | |
1070 | _tmp = ((_type *) _src)[_i]; \ | |
1071 | } \ | |
1072 | switch (sizeof(_type)) { \ | |
1073 | case 1: \ | |
1074 | break; \ | |
1075 | case 2: \ | |
1076 | _tmp = cpu_to_le16(_tmp); \ | |
1077 | break; \ | |
1078 | case 4: \ | |
1079 | _tmp = cpu_to_le32(_tmp); \ | |
1080 | break; \ | |
1081 | case 8: \ | |
1082 | _tmp = cpu_to_le64(_tmp); \ | |
1083 | break; \ | |
1084 | default: \ | |
1085 | BUG_ON(1); \ | |
1086 | } \ | |
1087 | __chan->ops->event_write(&__ctx, &_tmp, sizeof(_type)); \ | |
1088 | } \ | |
1089 | } | |
1090 | #endif /* #else #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
1091 | ||
f127e61e MD |
1092 | #undef _ctf_string |
1093 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
f127e61e | 1094 | if (_user) { \ |
1d84e8e7 | 1095 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(*(_src))); \ |
f127e61e MD |
1096 | __chan->ops->event_strcpy_from_user(&__ctx, _src, \ |
1097 | __get_dynamic_len(dest)); \ | |
1098 | } else { \ | |
1d84e8e7 MD |
1099 | const char *__ctf_tmp_string = \ |
1100 | ((_src) ? (_src) : __LTTNG_NULL_STRING); \ | |
1101 | lib_ring_buffer_align_ctx(&__ctx, \ | |
1102 | lttng_alignof(*__ctf_tmp_string)); \ | |
1103 | __chan->ops->event_strcpy(&__ctx, __ctf_tmp_string, \ | |
f127e61e MD |
1104 | __get_dynamic_len(dest)); \ |
1105 | } | |
e763dbf5 | 1106 | |
141ddf28 MD |
1107 | #undef _ctf_enum |
1108 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
1109 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
f64dd4be MD |
1110 | |
1111 | #undef ctf_align | |
1112 | #define ctf_align(_type) \ | |
1113 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); | |
1114 | ||
1115 | #undef ctf_custom_field | |
1116 | #define ctf_custom_field(_type, _item, _code) _code | |
1117 | ||
1118 | #undef ctf_custom_code | |
1119 | #define ctf_custom_code(...) \ | |
1120 | { \ | |
1121 | __VA_ARGS__ \ | |
1122 | } | |
1123 | ||
e763dbf5 | 1124 | /* Beware: this get len actually consumes the len value */ |
f127e61e | 1125 | #undef __get_dynamic_len |
114667d5 | 1126 | #define __get_dynamic_len(field) this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx++] |
e763dbf5 MD |
1127 | |
1128 | #undef TP_PROTO | |
f127e61e | 1129 | #define TP_PROTO(...) __VA_ARGS__ |
e763dbf5 MD |
1130 | |
1131 | #undef TP_ARGS | |
f127e61e | 1132 | #define TP_ARGS(...) __VA_ARGS__ |
e763dbf5 | 1133 | |
f127e61e MD |
1134 | #undef TP_FIELDS |
1135 | #define TP_FIELDS(...) __VA_ARGS__ | |
e763dbf5 | 1136 | |
7ca580f8 MD |
1137 | #undef TP_locvar |
1138 | #define TP_locvar(...) __VA_ARGS__ | |
1139 | ||
265822ae MD |
1140 | #undef TP_code_pre |
1141 | #define TP_code_pre(...) __VA_ARGS__ | |
1142 | ||
1143 | #undef TP_code_post | |
1144 | #define TP_code_post(...) __VA_ARGS__ | |
7ca580f8 | 1145 | |
c337ddc2 MD |
1146 | /* |
1147 | * For state dump, check that "session" argument (mandatory) matches the | |
1148 | * session this event belongs to. Ensures that we write state dump data only | |
1149 | * into the started session, not into all sessions. | |
1150 | */ | |
1151 | #ifdef TP_SESSION_CHECK | |
1152 | #define _TP_SESSION_CHECK(session, csession) (session == csession) | |
1153 | #else /* TP_SESSION_CHECK */ | |
1154 | #define _TP_SESSION_CHECK(session, csession) 1 | |
1155 | #endif /* TP_SESSION_CHECK */ | |
1156 | ||
f9771d39 | 1157 | /* |
f127e61e MD |
1158 | * Using twice size for filter stack data to hold size and pointer for |
1159 | * each field (worse case). For integers, max size required is 64-bit. | |
1160 | * Same for double-precision floats. Those fit within | |
1161 | * 2*sizeof(unsigned long) for all supported architectures. | |
1162 | * Perform UNION (||) of filter runtime list. | |
f9771d39 | 1163 | */ |
3bc29f0a | 1164 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 1165 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
e763dbf5 MD |
1166 | static void __event_probe__##_name(void *__data, _proto) \ |
1167 | { \ | |
7ca580f8 | 1168 | struct probe_local_vars { _locvar }; \ |
a90917c3 | 1169 | struct lttng_event *__event = __data; \ |
79150a49 JD |
1170 | struct lttng_probe_ctx __lttng_probe_ctx = { \ |
1171 | .event = __event, \ | |
63629d86 | 1172 | .trigger = NULL, \ |
ccecf3fb | 1173 | .interruptible = !irqs_disabled(), \ |
79150a49 | 1174 | }; \ |
a90917c3 | 1175 | struct lttng_channel *__chan = __event->chan; \ |
e0130fab | 1176 | struct lttng_session *__session = __chan->session; \ |
aaa4004a | 1177 | struct lib_ring_buffer_ctx __ctx; \ |
114667d5 MD |
1178 | ssize_t __event_len; \ |
1179 | size_t __event_align; \ | |
ec0a7fba | 1180 | size_t __orig_dynamic_len_offset, __dynamic_len_idx __attribute__((unused)); \ |
f127e61e | 1181 | union { \ |
114667d5 | 1182 | size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)]; \ |
f127e61e MD |
1183 | char __filter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \ |
1184 | } __stackvar; \ | |
e763dbf5 | 1185 | int __ret; \ |
7ca580f8 MD |
1186 | struct probe_local_vars __tp_locvar; \ |
1187 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
1188 | &__tp_locvar; \ | |
d1f652f8 | 1189 | struct lttng_id_tracker_rcu *__lf; \ |
e763dbf5 | 1190 | \ |
e0130fab | 1191 | if (!_TP_SESSION_CHECK(session, __session)) \ |
c337ddc2 | 1192 | return; \ |
a8f2d0c7 | 1193 | if (unlikely(!READ_ONCE(__session->active))) \ |
e64957da | 1194 | return; \ |
a8f2d0c7 | 1195 | if (unlikely(!READ_ONCE(__chan->enabled))) \ |
e64957da | 1196 | return; \ |
a8f2d0c7 | 1197 | if (unlikely(!READ_ONCE(__event->enabled))) \ |
52fc2e1f | 1198 | return; \ |
d1f652f8 MD |
1199 | __lf = lttng_rcu_dereference(__session->pid_tracker.p); \ |
1200 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, current->tgid))) \ | |
1201 | return; \ | |
1202 | __lf = lttng_rcu_dereference(__session->vpid_tracker.p); \ | |
1203 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, task_tgid_vnr(current)))) \ | |
1204 | return; \ | |
1205 | __lf = lttng_rcu_dereference(__session->uid_tracker.p); \ | |
1206 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1207 | lttng_current_uid()))) \ |
d1f652f8 MD |
1208 | return; \ |
1209 | __lf = lttng_rcu_dereference(__session->vuid_tracker.p); \ | |
1210 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1211 | lttng_current_vuid()))) \ |
d1f652f8 MD |
1212 | return; \ |
1213 | __lf = lttng_rcu_dereference(__session->gid_tracker.p); \ | |
1214 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1215 | lttng_current_gid()))) \ |
d1f652f8 MD |
1216 | return; \ |
1217 | __lf = lttng_rcu_dereference(__session->vgid_tracker.p); \ | |
1218 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1219 | lttng_current_vgid()))) \ |
e0130fab | 1220 | return; \ |
114667d5 MD |
1221 | __orig_dynamic_len_offset = this_cpu_ptr(<tng_dynamic_len_stack)->offset; \ |
1222 | __dynamic_len_idx = __orig_dynamic_len_offset; \ | |
265822ae | 1223 | _code_pre \ |
f127e61e MD |
1224 | if (unlikely(!list_empty(&__event->bytecode_runtime_head))) { \ |
1225 | struct lttng_bytecode_runtime *bc_runtime; \ | |
1226 | int __filter_record = __event->has_enablers_without_bytecode; \ | |
1227 | \ | |
1228 | __event_prepare_filter_stack__##_name(__stackvar.__filter_stack_data, \ | |
1229 | tp_locvar, _args); \ | |
7a09dcb7 | 1230 | lttng_list_for_each_entry_rcu(bc_runtime, &__event->bytecode_runtime_head, node) { \ |
79150a49 | 1231 | if (unlikely(bc_runtime->filter(bc_runtime, &__lttng_probe_ctx, \ |
f127e61e MD |
1232 | __stackvar.__filter_stack_data) & LTTNG_FILTER_RECORD_FLAG)) \ |
1233 | __filter_record = 1; \ | |
1234 | } \ | |
1235 | if (likely(!__filter_record)) \ | |
265822ae | 1236 | goto __post; \ |
f127e61e | 1237 | } \ |
114667d5 MD |
1238 | __event_len = __event_get_size__##_name(tp_locvar, _args); \ |
1239 | if (unlikely(__event_len < 0)) { \ | |
1240 | lib_ring_buffer_lost_event_too_big(__chan->chan); \ | |
1241 | goto __post; \ | |
1242 | } \ | |
7ca580f8 | 1243 | __event_align = __event_get_align__##_name(tp_locvar, _args); \ |
79150a49 | 1244 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, &__lttng_probe_ctx, __event_len, \ |
e763dbf5 | 1245 | __event_align, -1); \ |
aaa4004a | 1246 | __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ |
e763dbf5 | 1247 | if (__ret < 0) \ |
265822ae | 1248 | goto __post; \ |
f127e61e | 1249 | _fields \ |
aaa4004a | 1250 | __chan->ops->event_commit(&__ctx); \ |
265822ae MD |
1251 | __post: \ |
1252 | _code_post \ | |
114667d5 MD |
1253 | barrier(); /* use before un-reserve. */ \ |
1254 | this_cpu_ptr(<tng_dynamic_len_stack)->offset = __orig_dynamic_len_offset; \ | |
265822ae | 1255 | return; \ |
e763dbf5 MD |
1256 | } |
1257 | ||
3bc29f0a | 1258 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 1259 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f7bdf4db MD |
1260 | static void __event_probe__##_name(void *__data) \ |
1261 | { \ | |
7ca580f8 | 1262 | struct probe_local_vars { _locvar }; \ |
a90917c3 | 1263 | struct lttng_event *__event = __data; \ |
79150a49 JD |
1264 | struct lttng_probe_ctx __lttng_probe_ctx = { \ |
1265 | .event = __event, \ | |
63629d86 | 1266 | .trigger = NULL, \ |
ccecf3fb | 1267 | .interruptible = !irqs_disabled(), \ |
79150a49 | 1268 | }; \ |
a90917c3 | 1269 | struct lttng_channel *__chan = __event->chan; \ |
e0130fab | 1270 | struct lttng_session *__session = __chan->session; \ |
f7bdf4db | 1271 | struct lib_ring_buffer_ctx __ctx; \ |
114667d5 MD |
1272 | ssize_t __event_len; \ |
1273 | size_t __event_align; \ | |
ec0a7fba | 1274 | size_t __orig_dynamic_len_offset, __dynamic_len_idx __attribute__((unused)); \ |
f127e61e | 1275 | union { \ |
114667d5 | 1276 | size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)]; \ |
f127e61e MD |
1277 | char __filter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \ |
1278 | } __stackvar; \ | |
f7bdf4db | 1279 | int __ret; \ |
7ca580f8 MD |
1280 | struct probe_local_vars __tp_locvar; \ |
1281 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
1282 | &__tp_locvar; \ | |
d1f652f8 | 1283 | struct lttng_id_tracker_rcu *__lf; \ |
f7bdf4db | 1284 | \ |
e0130fab | 1285 | if (!_TP_SESSION_CHECK(session, __session)) \ |
c337ddc2 | 1286 | return; \ |
a8f2d0c7 | 1287 | if (unlikely(!READ_ONCE(__session->active))) \ |
f7bdf4db | 1288 | return; \ |
a8f2d0c7 | 1289 | if (unlikely(!READ_ONCE(__chan->enabled))) \ |
f7bdf4db | 1290 | return; \ |
a8f2d0c7 | 1291 | if (unlikely(!READ_ONCE(__event->enabled))) \ |
f7bdf4db | 1292 | return; \ |
d1f652f8 MD |
1293 | __lf = lttng_rcu_dereference(__session->pid_tracker.p); \ |
1294 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, current->tgid))) \ | |
1295 | return; \ | |
1296 | __lf = lttng_rcu_dereference(__session->vpid_tracker.p); \ | |
1297 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, task_tgid_vnr(current)))) \ | |
1298 | return; \ | |
1299 | __lf = lttng_rcu_dereference(__session->uid_tracker.p); \ | |
1300 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1301 | lttng_current_uid()))) \ |
d1f652f8 MD |
1302 | return; \ |
1303 | __lf = lttng_rcu_dereference(__session->vuid_tracker.p); \ | |
1304 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1305 | lttng_current_vuid()))) \ |
d1f652f8 MD |
1306 | return; \ |
1307 | __lf = lttng_rcu_dereference(__session->gid_tracker.p); \ | |
1308 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1309 | lttng_current_gid()))) \ |
d1f652f8 MD |
1310 | return; \ |
1311 | __lf = lttng_rcu_dereference(__session->vgid_tracker.p); \ | |
1312 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1313 | lttng_current_vgid()))) \ |
e0130fab | 1314 | return; \ |
114667d5 MD |
1315 | __orig_dynamic_len_offset = this_cpu_ptr(<tng_dynamic_len_stack)->offset; \ |
1316 | __dynamic_len_idx = __orig_dynamic_len_offset; \ | |
265822ae | 1317 | _code_pre \ |
f127e61e MD |
1318 | if (unlikely(!list_empty(&__event->bytecode_runtime_head))) { \ |
1319 | struct lttng_bytecode_runtime *bc_runtime; \ | |
1320 | int __filter_record = __event->has_enablers_without_bytecode; \ | |
1321 | \ | |
1322 | __event_prepare_filter_stack__##_name(__stackvar.__filter_stack_data, \ | |
1323 | tp_locvar); \ | |
7a09dcb7 | 1324 | lttng_list_for_each_entry_rcu(bc_runtime, &__event->bytecode_runtime_head, node) { \ |
79150a49 | 1325 | if (unlikely(bc_runtime->filter(bc_runtime, &__lttng_probe_ctx, \ |
f127e61e MD |
1326 | __stackvar.__filter_stack_data) & LTTNG_FILTER_RECORD_FLAG)) \ |
1327 | __filter_record = 1; \ | |
1328 | } \ | |
1329 | if (likely(!__filter_record)) \ | |
265822ae | 1330 | goto __post; \ |
f127e61e | 1331 | } \ |
114667d5 MD |
1332 | __event_len = __event_get_size__##_name(tp_locvar); \ |
1333 | if (unlikely(__event_len < 0)) { \ | |
1334 | lib_ring_buffer_lost_event_too_big(__chan->chan); \ | |
1335 | goto __post; \ | |
1336 | } \ | |
7ca580f8 | 1337 | __event_align = __event_get_align__##_name(tp_locvar); \ |
79150a49 | 1338 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, &__lttng_probe_ctx, __event_len, \ |
f7bdf4db MD |
1339 | __event_align, -1); \ |
1340 | __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ | |
1341 | if (__ret < 0) \ | |
265822ae | 1342 | goto __post; \ |
f127e61e | 1343 | _fields \ |
f7bdf4db | 1344 | __chan->ops->event_commit(&__ctx); \ |
265822ae MD |
1345 | __post: \ |
1346 | _code_post \ | |
114667d5 MD |
1347 | barrier(); /* use before un-reserve. */ \ |
1348 | this_cpu_ptr(<tng_dynamic_len_stack)->offset = __orig_dynamic_len_offset; \ | |
265822ae | 1349 | return; \ |
f7bdf4db MD |
1350 | } |
1351 | ||
e763dbf5 MD |
1352 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
1353 | ||
f127e61e MD |
1354 | #undef __get_dynamic_len |
1355 | ||
63629d86 FD |
1356 | /* |
1357 | * | |
1358 | */ | |
1359 | ||
1360 | #include <probes/lttng-events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ | |
1361 | ||
1362 | #undef TP_PROTO | |
1363 | #define TP_PROTO(...) __VA_ARGS__ | |
1364 | ||
1365 | #undef TP_ARGS | |
1366 | #define TP_ARGS(...) __VA_ARGS__ | |
1367 | ||
1368 | #undef TP_FIELDS | |
1369 | #define TP_FIELDS(...) __VA_ARGS__ | |
1370 | ||
1371 | #undef TP_locvar | |
1372 | #define TP_locvar(...) __VA_ARGS__ | |
1373 | ||
1374 | #undef TP_code_pre | |
1375 | #define TP_code_pre(...) __VA_ARGS__ | |
1376 | ||
1377 | #undef TP_code_post | |
1378 | #define TP_code_post(...) __VA_ARGS__ | |
1379 | ||
1380 | /* | |
1381 | * Using twice size for filter stack data to hold size and pointer for | |
1382 | * each field (worse case). For integers, max size required is 64-bit. | |
1383 | * Same for double-precision floats. Those fit within | |
1384 | * 2*sizeof(unsigned long) for all supported architectures. | |
1385 | * Perform UNION (||) of filter runtime list. | |
1386 | */ | |
1387 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE | |
1388 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ | |
1389 | static void __trigger_probe__##_name(void *__data, _proto) \ | |
1390 | { \ | |
1391 | struct probe_local_vars { _locvar }; \ | |
1392 | struct lttng_trigger *__trigger = __data; \ | |
1393 | struct lttng_probe_ctx __lttng_probe_ctx = { \ | |
1394 | .event = NULL, \ | |
1395 | .trigger = __trigger, \ | |
1396 | .interruptible = !irqs_disabled(), \ | |
1397 | }; \ | |
1398 | union { \ | |
1399 | size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)]; \ | |
1400 | char __filter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \ | |
1401 | } __stackvar; \ | |
1402 | struct probe_local_vars __tp_locvar; \ | |
1403 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
1404 | &__tp_locvar; \ | |
1405 | \ | |
1406 | if (unlikely(!READ_ONCE(__trigger->enabled))) \ | |
1407 | return; \ | |
1408 | _code_pre \ | |
1409 | if (unlikely(!list_empty(&__trigger->bytecode_runtime_head))) { \ | |
1410 | struct lttng_bytecode_runtime *bc_runtime; \ | |
1411 | int __filter_record = __trigger->has_enablers_without_bytecode; \ | |
1412 | \ | |
1413 | __event_prepare_filter_stack__##_name(__stackvar.__filter_stack_data, \ | |
1414 | tp_locvar, _args); \ | |
1415 | lttng_list_for_each_entry_rcu(bc_runtime, &__trigger->bytecode_runtime_head, node) { \ | |
1416 | if (unlikely(bc_runtime->filter(bc_runtime, &__lttng_probe_ctx, \ | |
1417 | __stackvar.__filter_stack_data) & LTTNG_FILTER_RECORD_FLAG)) \ | |
1418 | __filter_record = 1; \ | |
1419 | } \ | |
1420 | if (likely(!__filter_record)) \ | |
1421 | goto __post; \ | |
1422 | } \ | |
1423 | \ | |
1424 | __trigger->send_notification(__trigger); \ | |
1425 | __post: \ | |
1426 | _code_post \ | |
1427 | return; \ | |
1428 | } | |
1429 | ||
1430 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS | |
1431 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ | |
1432 | static void __trigger_probe__##_name(void *__data) \ | |
1433 | { \ | |
1434 | struct probe_local_vars { _locvar }; \ | |
1435 | struct lttng_trigger *__trigger = __data; \ | |
1436 | struct lttng_probe_ctx __lttng_probe_ctx = { \ | |
1437 | .event = NULL, \ | |
1438 | .trigger = __trigger, \ | |
1439 | .interruptible = !irqs_disabled(), \ | |
1440 | }; \ | |
1441 | union { \ | |
1442 | size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)]; \ | |
1443 | char __filter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \ | |
1444 | } __stackvar; \ | |
1445 | struct probe_local_vars __tp_locvar; \ | |
1446 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
1447 | &__tp_locvar; \ | |
1448 | \ | |
1449 | if (unlikely(!READ_ONCE(__trigger->enabled))) \ | |
1450 | return; \ | |
1451 | _code_pre \ | |
1452 | if (unlikely(!list_empty(&__trigger->bytecode_runtime_head))) { \ | |
1453 | struct lttng_bytecode_runtime *bc_runtime; \ | |
1454 | int __filter_record = __trigger->has_enablers_without_bytecode; \ | |
1455 | \ | |
1456 | __event_prepare_filter_stack__##_name(__stackvar.__filter_stack_data, \ | |
1457 | tp_locvar); \ | |
1458 | lttng_list_for_each_entry_rcu(bc_runtime, &__trigger->bytecode_runtime_head, node) { \ | |
1459 | if (unlikely(bc_runtime->filter(bc_runtime, &__lttng_probe_ctx, \ | |
1460 | __stackvar.__filter_stack_data) & LTTNG_FILTER_RECORD_FLAG)) \ | |
1461 | __filter_record = 1; \ | |
1462 | } \ | |
1463 | if (likely(!__filter_record)) \ | |
1464 | goto __post; \ | |
1465 | } \ | |
1466 | \ | |
1467 | __trigger->send_notification(__trigger); \ | |
1468 | __post: \ | |
1469 | _code_post \ | |
1470 | return; \ | |
1471 | } | |
1472 | ||
1473 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
f127e61e MD |
1474 | /* |
1475 | * Stage 7 of the trace events. | |
1476 | * | |
1477 | * Create event descriptions. | |
1478 | */ | |
1479 | ||
1480 | /* Named field types must be defined in lttng-types.h */ | |
1481 | ||
ba012e22 | 1482 | #include <probes/lttng-events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
f127e61e MD |
1483 | |
1484 | #ifndef TP_PROBE_CB | |
1485 | #define TP_PROBE_CB(_template) &__event_probe__##_template | |
1486 | #endif | |
1487 | ||
63629d86 FD |
1488 | #ifndef TP_TRIGGER_PROBE_CB |
1489 | #define TP_TRIGGER_PROBE_CB(_template) &__trigger_probe__##_template | |
1490 | #endif | |
1491 | ||
f127e61e MD |
1492 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS |
1493 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
1494 | static const struct lttng_event_desc __event_desc___##_map = { \ | |
1495 | .fields = __event_fields___##_template, \ | |
1496 | .name = #_map, \ | |
1497 | .kname = #_name, \ | |
1498 | .probe_callback = (void *) TP_PROBE_CB(_template), \ | |
1499 | .nr_fields = ARRAY_SIZE(__event_fields___##_template), \ | |
1500 | .owner = THIS_MODULE, \ | |
63629d86 | 1501 | .trigger_callback = (void *) TP_TRIGGER_PROBE_CB(_template), \ |
f127e61e MD |
1502 | }; |
1503 | ||
1504 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
1505 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
1506 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) | |
1507 | ||
1508 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
1509 | ||
1510 | /* | |
1511 | * Stage 8 of the trace events. | |
1512 | * | |
1513 | * Create an array of event description pointers. | |
1514 | */ | |
1515 | ||
ba012e22 | 1516 | #include <probes/lttng-events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
f127e61e MD |
1517 | |
1518 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
1519 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
1520 | &__event_desc___##_map, | |
1521 | ||
1522 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
1523 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
1524 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) | |
1525 | ||
1526 | #define TP_ID1(_token, _system) _token##_system | |
1527 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1528 | ||
1529 | static const struct lttng_event_desc *TP_ID(__event_desc___, TRACE_SYSTEM)[] = { | |
1530 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
1531 | }; | |
1532 | ||
1533 | #undef TP_ID1 | |
1534 | #undef TP_ID | |
1535 | ||
1536 | /* | |
1537 | * Stage 9 of the trace events. | |
1538 | * | |
1539 | * Create a toplevel descriptor for the whole probe. | |
1540 | */ | |
1541 | ||
1542 | #define TP_ID1(_token, _system) _token##_system | |
1543 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1544 | ||
1545 | /* non-const because list head will be modified when registered. */ | |
1546 | static __used struct lttng_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = { | |
1547 | .provider = __stringify(TRACE_SYSTEM), | |
1548 | .event_desc = TP_ID(__event_desc___, TRACE_SYSTEM), | |
1549 | .nr_events = ARRAY_SIZE(TP_ID(__event_desc___, TRACE_SYSTEM)), | |
1550 | .head = { NULL, NULL }, | |
1551 | .lazy_init_head = { NULL, NULL }, | |
1552 | .lazy = 0, | |
1553 | }; | |
1554 | ||
1555 | #undef TP_ID1 | |
1556 | #undef TP_ID | |
1557 | ||
3afe7aac | 1558 | /* |
c099397a | 1559 | * Stage 10 of the trace events. |
3afe7aac MD |
1560 | * |
1561 | * Register/unregister probes at module load/unload. | |
1562 | */ | |
1563 | ||
ba012e22 | 1564 | #include <probes/lttng-events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
3afe7aac MD |
1565 | |
1566 | #define TP_ID1(_token, _system) _token##_system | |
1567 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1568 | #define module_init_eval1(_token, _system) module_init(_token##_system) | |
1569 | #define module_init_eval(_token, _system) module_init_eval1(_token, _system) | |
1570 | #define module_exit_eval1(_token, _system) module_exit(_token##_system) | |
1571 | #define module_exit_eval(_token, _system) module_exit_eval1(_token, _system) | |
1572 | ||
2655f9ad | 1573 | #ifndef TP_MODULE_NOINIT |
3afe7aac MD |
1574 | static int TP_ID(__lttng_events_init__, TRACE_SYSTEM)(void) |
1575 | { | |
6d2a620c | 1576 | wrapper_vmalloc_sync_all(); |
a90917c3 | 1577 | return lttng_probe_register(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
1578 | } |
1579 | ||
3afe7aac MD |
1580 | static void TP_ID(__lttng_events_exit__, TRACE_SYSTEM)(void) |
1581 | { | |
a90917c3 | 1582 | lttng_probe_unregister(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
1583 | } |
1584 | ||
2655f9ad MD |
1585 | #ifndef TP_MODULE_NOAUTOLOAD |
1586 | module_init_eval(__lttng_events_init__, TRACE_SYSTEM); | |
3afe7aac | 1587 | module_exit_eval(__lttng_events_exit__, TRACE_SYSTEM); |
259b6cb3 | 1588 | #endif |
3afe7aac | 1589 | |
2655f9ad MD |
1590 | #endif |
1591 | ||
3afe7aac MD |
1592 | #undef module_init_eval |
1593 | #undef module_exit_eval | |
1594 | #undef TP_ID1 | |
1595 | #undef TP_ID | |
177b3692 MD |
1596 | |
1597 | #undef TP_PROTO | |
1598 | #undef TP_ARGS |