Commit | Line | Data |
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b7cdc182 | 1 | /* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only) |
9f36eaed | 2 | * |
3b4aafcb | 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 | 14 | |
263b6c88 | 15 | #include <wrapper/vmalloc.h> /* for wrapper_vmalloc_sync_mappings() */ |
24591303 MD |
16 | #include <ringbuffer/frontend_types.h> |
17 | #include <ringbuffer/backend.h> | |
8d43abb7 | 18 | #include <wrapper/rcu.h> |
608416e1 | 19 | #include <wrapper/user_namespace.h> |
2df37e95 MD |
20 | #include <lttng/types.h> |
21 | #include <lttng/probe-user.h> | |
22 | #include <lttng/events.h> | |
23 | #include <lttng/tracer-core.h> | |
24 | #include <lttng/tp-mempool.h> | |
40652b65 | 25 | |
1d84e8e7 MD |
26 | #define __LTTNG_NULL_STRING "(null)" |
27 | ||
3b4aafcb MD |
28 | #undef PARAMS |
29 | #define PARAMS(args...) args | |
30 | ||
40652b65 | 31 | /* |
6db3d13b | 32 | * Macro declarations used for all stages. |
40652b65 MD |
33 | */ |
34 | ||
76e4f017 MD |
35 | /* |
36 | * LTTng name mapping macros. LTTng remaps some of the kernel events to | |
37 | * enforce name-spacing. | |
38 | */ | |
3bc29f0a | 39 | #undef LTTNG_TRACEPOINT_EVENT_MAP |
f127e61e | 40 | #define LTTNG_TRACEPOINT_EVENT_MAP(name, map, proto, args, fields) \ |
3bc29f0a | 41 | LTTNG_TRACEPOINT_EVENT_CLASS(map, \ |
76e4f017 MD |
42 | PARAMS(proto), \ |
43 | PARAMS(args), \ | |
f127e61e | 44 | PARAMS(fields)) \ |
3bc29f0a | 45 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(map, name, map, PARAMS(proto), PARAMS(args)) |
76e4f017 | 46 | |
3bc29f0a | 47 | #undef LTTNG_TRACEPOINT_EVENT_MAP_NOARGS |
f127e61e | 48 | #define LTTNG_TRACEPOINT_EVENT_MAP_NOARGS(name, map, fields) \ |
3bc29f0a | 49 | LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(map, \ |
f127e61e | 50 | PARAMS(fields)) \ |
3bc29f0a | 51 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(map, name, map) |
76e4f017 | 52 | |
f127e61e | 53 | #undef LTTNG_TRACEPOINT_EVENT_CODE_MAP |
265822ae | 54 | #define LTTNG_TRACEPOINT_EVENT_CODE_MAP(name, map, proto, args, _locvar, _code_pre, fields, _code_post) \ |
f127e61e MD |
55 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE(map, \ |
56 | PARAMS(proto), \ | |
57 | PARAMS(args), \ | |
58 | PARAMS(_locvar), \ | |
265822ae MD |
59 | PARAMS(_code_pre), \ |
60 | PARAMS(fields), \ | |
61 | PARAMS(_code_post)) \ | |
f127e61e MD |
62 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(map, name, map, PARAMS(proto), PARAMS(args)) |
63 | ||
3bc29f0a | 64 | #undef LTTNG_TRACEPOINT_EVENT_CODE |
265822ae | 65 | #define LTTNG_TRACEPOINT_EVENT_CODE(name, proto, args, _locvar, _code_pre, fields, _code_post) \ |
f127e61e | 66 | LTTNG_TRACEPOINT_EVENT_CODE_MAP(name, name, \ |
7ca580f8 MD |
67 | PARAMS(proto), \ |
68 | PARAMS(args), \ | |
69 | PARAMS(_locvar), \ | |
265822ae MD |
70 | PARAMS(_code_pre), \ |
71 | PARAMS(fields), \ | |
72 | PARAMS(_code_post)) | |
fcf7fa33 | 73 | |
40652b65 | 74 | /* |
3bc29f0a MD |
75 | * LTTNG_TRACEPOINT_EVENT_CLASS can be used to add a generic function |
76 | * handlers for events. That is, if all events have the same parameters | |
77 | * and just have distinct trace points. Each tracepoint can be defined | |
78 | * with LTTNG_TRACEPOINT_EVENT_INSTANCE and that will map the | |
79 | * LTTNG_TRACEPOINT_EVENT_CLASS to the tracepoint. | |
40652b65 | 80 | * |
3bc29f0a MD |
81 | * LTTNG_TRACEPOINT_EVENT is a one to one mapping between tracepoint and |
82 | * template. | |
40652b65 | 83 | */ |
6db3d13b | 84 | |
3bc29f0a | 85 | #undef LTTNG_TRACEPOINT_EVENT |
f127e61e | 86 | #define LTTNG_TRACEPOINT_EVENT(name, proto, args, fields) \ |
3bc29f0a MD |
87 | LTTNG_TRACEPOINT_EVENT_MAP(name, name, \ |
88 | PARAMS(proto), \ | |
89 | PARAMS(args), \ | |
f127e61e | 90 | PARAMS(fields)) |
40652b65 | 91 | |
3bc29f0a | 92 | #undef LTTNG_TRACEPOINT_EVENT_NOARGS |
f127e61e MD |
93 | #define LTTNG_TRACEPOINT_EVENT_NOARGS(name, fields) \ |
94 | LTTNG_TRACEPOINT_EVENT_MAP_NOARGS(name, name, PARAMS(fields)) | |
76e4f017 | 95 | |
3bc29f0a MD |
96 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE |
97 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE(template, name, proto, args) \ | |
98 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(template, name, name, PARAMS(proto), PARAMS(args)) | |
76e4f017 | 99 | |
3bc29f0a MD |
100 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS |
101 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(template, name) \ | |
102 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(template, name, name) | |
76e4f017 | 103 | |
3bc29f0a | 104 | #undef LTTNG_TRACEPOINT_EVENT_CLASS |
f127e61e | 105 | #define LTTNG_TRACEPOINT_EVENT_CLASS(_name, _proto, _args, _fields) \ |
3bc29f0a | 106 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, PARAMS(_proto), PARAMS(_args), , , \ |
265822ae | 107 | PARAMS(_fields), ) |
7ca580f8 | 108 | |
3bc29f0a | 109 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS |
f127e61e | 110 | #define LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(_name, _fields) \ |
265822ae | 111 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, , , PARAMS(_fields), ) |
7ca580f8 MD |
112 | |
113 | ||
f62b389e | 114 | /* |
c099397a | 115 | * Stage 1 of the trace events. |
f62b389e MD |
116 | * |
117 | * Create dummy trace calls for each events, verifying that the LTTng module | |
3bc29f0a MD |
118 | * instrumentation headers match the kernel arguments. Will be optimized |
119 | * out by the compiler. | |
f62b389e MD |
120 | */ |
121 | ||
f127e61e | 122 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb | 123 | #include <lttng/events-reset.h> |
f62b389e MD |
124 | |
125 | #undef TP_PROTO | |
f127e61e | 126 | #define TP_PROTO(...) __VA_ARGS__ |
f62b389e MD |
127 | |
128 | #undef TP_ARGS | |
f127e61e | 129 | #define TP_ARGS(...) __VA_ARGS__ |
f62b389e | 130 | |
3bc29f0a MD |
131 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP |
132 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
7eb827f2 | 133 | void trace_##_name(_proto); |
f62b389e | 134 | |
3bc29f0a MD |
135 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS |
136 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
cb1aa0c7 | 137 | void trace_##_name(void); |
f7bdf4db | 138 | |
f62b389e MD |
139 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
140 | ||
d0558de2 MD |
141 | /* |
142 | * Stage 1.1 of the trace events. | |
143 | * | |
144 | * Create dummy trace prototypes for each event class, and for each used | |
145 | * template. This will allow checking whether the prototypes from the | |
146 | * class and the instance using the class actually match. | |
147 | */ | |
148 | ||
3b4aafcb | 149 | #include <lttng/events-reset.h> /* Reset all macros within TRACE_EVENT */ |
d0558de2 MD |
150 | |
151 | #undef TP_PROTO | |
152 | #define TP_PROTO(...) __VA_ARGS__ | |
153 | ||
154 | #undef TP_ARGS | |
155 | #define TP_ARGS(...) __VA_ARGS__ | |
156 | ||
157 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
158 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
159 | void __event_template_proto___##_template(_proto); | |
160 | ||
161 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
162 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
163 | void __event_template_proto___##_template(void); | |
164 | ||
165 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE | |
265822ae | 166 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
d0558de2 MD |
167 | void __event_template_proto___##_name(_proto); |
168 | ||
169 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS | |
265822ae | 170 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
d0558de2 MD |
171 | void __event_template_proto___##_name(void); |
172 | ||
173 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
174 | ||
141ddf28 MD |
175 | /* |
176 | * Stage 1.2 of tracepoint event generation | |
177 | * | |
178 | * Unfolding the enums | |
179 | */ | |
3b4aafcb | 180 | #include <lttng/events-reset.h> /* Reset all macros within TRACE_EVENT */ |
141ddf28 MD |
181 | |
182 | /* Enumeration entry (single value) */ | |
183 | #undef ctf_enum_value | |
184 | #define ctf_enum_value(_string, _value) \ | |
185 | { \ | |
186 | .start = { \ | |
187 | .signedness = lttng_is_signed_type(__typeof__(_value)), \ | |
188 | .value = lttng_is_signed_type(__typeof__(_value)) ? \ | |
189 | (long long) (_value) : (_value), \ | |
190 | }, \ | |
191 | .end = { \ | |
192 | .signedness = lttng_is_signed_type(__typeof__(_value)), \ | |
193 | .value = lttng_is_signed_type(__typeof__(_value)) ? \ | |
194 | (long long) (_value) : (_value), \ | |
195 | }, \ | |
196 | .string = (_string), \ | |
197 | }, | |
198 | ||
199 | /* Enumeration entry (range) */ | |
200 | #undef ctf_enum_range | |
201 | #define ctf_enum_range(_string, _range_start, _range_end) \ | |
202 | { \ | |
203 | .start = { \ | |
204 | .signedness = lttng_is_signed_type(__typeof__(_range_start)), \ | |
205 | .value = lttng_is_signed_type(__typeof__(_range_start)) ? \ | |
206 | (long long) (_range_start) : (_range_start), \ | |
207 | }, \ | |
208 | .end = { \ | |
209 | .signedness = lttng_is_signed_type(__typeof__(_range_end)), \ | |
210 | .value = lttng_is_signed_type(__typeof__(_range_end)) ? \ | |
211 | (long long) (_range_end) : (_range_end), \ | |
212 | }, \ | |
213 | .string = (_string), \ | |
214 | }, | |
215 | ||
08ad1061 PP |
216 | /* Enumeration entry (automatic value; follows the rules of CTF) */ |
217 | #undef ctf_enum_auto | |
218 | #define ctf_enum_auto(_string) \ | |
219 | { \ | |
220 | .start = { \ | |
221 | .signedness = -1, \ | |
222 | .value = -1, \ | |
223 | }, \ | |
224 | .end = { \ | |
225 | .signedness = -1, \ | |
226 | .value = -1, \ | |
227 | }, \ | |
228 | .string = (_string), \ | |
229 | .options = { \ | |
230 | .is_auto = 1, \ | |
231 | } \ | |
232 | }, | |
233 | ||
141ddf28 MD |
234 | #undef TP_ENUM_VALUES |
235 | #define TP_ENUM_VALUES(...) \ | |
236 | __VA_ARGS__ | |
237 | ||
238 | #undef LTTNG_TRACEPOINT_ENUM | |
239 | #define LTTNG_TRACEPOINT_ENUM(_name, _values) \ | |
240 | const struct lttng_enum_entry __enum_values__##_name[] = { \ | |
241 | _values \ | |
242 | }; | |
243 | ||
244 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
245 | ||
6db3d13b | 246 | /* |
c099397a | 247 | * Stage 2 of the trace events. |
6db3d13b MD |
248 | * |
249 | * Create event field type metadata section. | |
250 | * Each event produce an array of fields. | |
251 | */ | |
252 | ||
f127e61e | 253 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb MD |
254 | #include <lttng/events-reset.h> |
255 | #include <lttng/events-write.h> | |
256 | #include <lttng/events-nowrite.h> | |
6db3d13b | 257 | |
f127e61e MD |
258 | #undef _ctf_integer_ext |
259 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ | |
c099397a MD |
260 | { \ |
261 | .name = #_item, \ | |
ceabb767 | 262 | .type = __type_integer(_type, 0, 0, -1, _byte_order, _base, none), \ |
f127e61e MD |
263 | .nowrite = _nowrite, \ |
264 | .user = _user, \ | |
ceabb767 | 265 | .nofilter = 0, \ |
c099397a | 266 | }, |
40652b65 | 267 | |
f127e61e | 268 | #undef _ctf_array_encoded |
ceabb767 MD |
269 | #define _ctf_array_encoded(_type, _item, _src, _length, \ |
270 | _encoding, _byte_order, _elem_type_base, _user, _nowrite) \ | |
299338c8 | 271 | { \ |
c099397a MD |
272 | .name = #_item, \ |
273 | .type = \ | |
274 | { \ | |
ceabb767 | 275 | .atype = atype_array_nestable, \ |
f127e61e | 276 | .u = \ |
c099397a | 277 | { \ |
ceabb767 | 278 | .array_nestable = \ |
f127e61e | 279 | { \ |
ceabb767 MD |
280 | .elem_type = __LTTNG_COMPOUND_LITERAL(struct lttng_type, \ |
281 | __type_integer(_type, 0, 0, -1, _byte_order, _elem_type_base, _encoding)), \ | |
f127e61e | 282 | .length = _length, \ |
ceabb767 | 283 | .alignment = 0, \ |
f127e61e MD |
284 | } \ |
285 | } \ | |
299338c8 | 286 | }, \ |
f127e61e MD |
287 | .nowrite = _nowrite, \ |
288 | .user = _user, \ | |
ceabb767 | 289 | .nofilter = 0, \ |
299338c8 | 290 | }, |
40652b65 | 291 | |
43803cf2 MD |
292 | #undef _ctf_array_bitfield |
293 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
294 | { \ | |
295 | .name = #_item, \ | |
296 | .type = \ | |
297 | { \ | |
ceabb767 | 298 | .atype = atype_array_nestable, \ |
43803cf2 MD |
299 | .u = \ |
300 | { \ | |
ceabb767 | 301 | .array_nestable = \ |
43803cf2 | 302 | { \ |
ceabb767 MD |
303 | .elem_type = __LTTNG_COMPOUND_LITERAL(struct lttng_type, \ |
304 | __type_integer(_type, 1, 1, 0, __LITTLE_ENDIAN, 10, none)), \ | |
43803cf2 | 305 | .length = (_length) * sizeof(_type) * CHAR_BIT, \ |
ceabb767 | 306 | .alignment = lttng_alignof(_type), \ |
43803cf2 MD |
307 | } \ |
308 | } \ | |
309 | }, \ | |
310 | .nowrite = _nowrite, \ | |
311 | .user = _user, \ | |
ceabb767 | 312 | .nofilter = 0, \ |
43803cf2 MD |
313 | }, |
314 | ||
315 | ||
f127e61e MD |
316 | #undef _ctf_sequence_encoded |
317 | #define _ctf_sequence_encoded(_type, _item, _src, \ | |
318 | _length_type, _src_length, _encoding, \ | |
ceabb767 MD |
319 | _byte_order, _elem_type_base, _user, _nowrite) \ |
320 | { \ | |
321 | .name = "_" #_item "_length", \ | |
322 | .type = __type_integer(_length_type, 0, 0, -1, __BYTE_ORDER, 10, none), \ | |
323 | .nowrite = _nowrite, \ | |
324 | .nofilter = 1, \ | |
325 | }, \ | |
299338c8 | 326 | { \ |
c099397a MD |
327 | .name = #_item, \ |
328 | .type = \ | |
329 | { \ | |
ceabb767 | 330 | .atype = atype_sequence_nestable, \ |
f127e61e | 331 | .u = \ |
c099397a | 332 | { \ |
ceabb767 | 333 | .sequence_nestable = \ |
f127e61e | 334 | { \ |
ceabb767 MD |
335 | .length_name = "_" #_item "_length", \ |
336 | .elem_type = __LTTNG_COMPOUND_LITERAL(struct lttng_type, \ | |
337 | __type_integer(_type, 0, 0, -1, _byte_order, _elem_type_base, _encoding)), \ | |
338 | .alignment = 0, \ | |
43803cf2 MD |
339 | }, \ |
340 | }, \ | |
341 | }, \ | |
342 | .nowrite = _nowrite, \ | |
343 | .user = _user, \ | |
ceabb767 | 344 | .nofilter = 0, \ |
43803cf2 MD |
345 | }, |
346 | ||
347 | #undef _ctf_sequence_bitfield | |
348 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
349 | _length_type, _src_length, \ | |
350 | _user, _nowrite) \ | |
ceabb767 MD |
351 | { \ |
352 | .name = "_" #_item "_length", \ | |
353 | .type = __type_integer(_length_type, 0, 0, -1, __BYTE_ORDER, 10, none), \ | |
354 | .nowrite = _nowrite, \ | |
355 | .nofilter = 1, \ | |
356 | }, \ | |
43803cf2 MD |
357 | { \ |
358 | .name = #_item, \ | |
359 | .type = \ | |
360 | { \ | |
ceabb767 | 361 | .atype = atype_sequence_nestable, \ |
43803cf2 MD |
362 | .u = \ |
363 | { \ | |
ceabb767 | 364 | .sequence_nestable = \ |
43803cf2 | 365 | { \ |
ceabb767 MD |
366 | .length_name = "_" #_item "_length", \ |
367 | .elem_type = __LTTNG_COMPOUND_LITERAL(struct lttng_type, \ | |
368 | __type_integer(_type, 1, 1, 0, __LITTLE_ENDIAN, 10, none)), \ | |
369 | .alignment = lttng_alignof(_type), \ | |
f127e61e | 370 | }, \ |
c099397a | 371 | }, \ |
299338c8 | 372 | }, \ |
f127e61e MD |
373 | .nowrite = _nowrite, \ |
374 | .user = _user, \ | |
ceabb767 | 375 | .nofilter = 0, \ |
299338c8 | 376 | }, |
40652b65 | 377 | |
f127e61e MD |
378 | #undef _ctf_string |
379 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
299338c8 | 380 | { \ |
c099397a MD |
381 | .name = #_item, \ |
382 | .type = \ | |
383 | { \ | |
299338c8 | 384 | .atype = atype_string, \ |
f127e61e MD |
385 | .u = \ |
386 | { \ | |
ceabb767 | 387 | .string = { .encoding = lttng_encode_UTF8 }, \ |
f127e61e | 388 | }, \ |
299338c8 | 389 | }, \ |
f127e61e MD |
390 | .nowrite = _nowrite, \ |
391 | .user = _user, \ | |
ceabb767 | 392 | .nofilter = 0, \ |
299338c8 | 393 | }, |
1d12cebd | 394 | |
141ddf28 MD |
395 | #undef _ctf_enum |
396 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
397 | { \ | |
398 | .name = #_item, \ | |
399 | .type = { \ | |
ceabb767 | 400 | .atype = atype_enum_nestable, \ |
141ddf28 | 401 | .u = { \ |
ceabb767 MD |
402 | .enum_nestable = { \ |
403 | .desc = &__enum_##_name, \ | |
404 | .container_type = __LTTNG_COMPOUND_LITERAL(struct lttng_type, \ | |
405 | __type_integer(_type, 0, 0, -1, __BYTE_ORDER, 10, none)), \ | |
406 | }, \ | |
141ddf28 MD |
407 | }, \ |
408 | }, \ | |
409 | .nowrite = _nowrite, \ | |
410 | .user = _user, \ | |
ceabb767 | 411 | .nofilter = 0, \ |
141ddf28 | 412 | }, |
f64dd4be MD |
413 | |
414 | #undef ctf_custom_field | |
415 | #define ctf_custom_field(_type, _item, _code) \ | |
416 | { \ | |
417 | .name = #_item, \ | |
ceabb767 | 418 | .type = _type, \ |
f64dd4be MD |
419 | .nowrite = 0, \ |
420 | .user = 0, \ | |
ceabb767 | 421 | .nofilter = 1, \ |
f64dd4be MD |
422 | }, |
423 | ||
424 | #undef ctf_custom_type | |
425 | #define ctf_custom_type(...) __VA_ARGS__ | |
426 | ||
f127e61e MD |
427 | #undef TP_FIELDS |
428 | #define TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */ | |
1d12cebd | 429 | |
3bc29f0a | 430 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 431 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
0d1d4002 | 432 | static const struct lttng_event_field __event_fields___##_name[] = { \ |
f127e61e | 433 | _fields \ |
299338c8 MD |
434 | }; |
435 | ||
3bc29f0a | 436 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae MD |
437 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
438 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, PARAMS(_fields), _code_post) | |
f7bdf4db | 439 | |
141ddf28 MD |
440 | #undef LTTNG_TRACEPOINT_ENUM |
441 | #define LTTNG_TRACEPOINT_ENUM(_name, _values) \ | |
442 | static const struct lttng_enum_desc __enum_##_name = { \ | |
443 | .name = #_name, \ | |
444 | .entries = __enum_values__##_name, \ | |
445 | .nr_entries = ARRAY_SIZE(__enum_values__##_name), \ | |
446 | }; | |
447 | ||
299338c8 MD |
448 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
449 | ||
19c57fbf | 450 | /* |
c099397a | 451 | * Stage 3 of the trace events. |
19c57fbf MD |
452 | * |
453 | * Create probe callback prototypes. | |
454 | */ | |
455 | ||
f127e61e | 456 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb | 457 | #include <lttng/events-reset.h> |
19c57fbf MD |
458 | |
459 | #undef TP_PROTO | |
f127e61e | 460 | #define TP_PROTO(...) __VA_ARGS__ |
19c57fbf | 461 | |
3bc29f0a | 462 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 463 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
19c57fbf MD |
464 | static void __event_probe__##_name(void *__data, _proto); |
465 | ||
3bc29f0a | 466 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 467 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f7bdf4db MD |
468 | static void __event_probe__##_name(void *__data); |
469 | ||
19c57fbf MD |
470 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
471 | ||
f7bdf4db MD |
472 | /* |
473 | * Stage 4 of the trace events. | |
474 | * | |
40652b65 MD |
475 | * Create static inline function that calculates event size. |
476 | */ | |
477 | ||
f127e61e | 478 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb MD |
479 | #include <lttng/events-reset.h> |
480 | #include <lttng/events-write.h> | |
6db3d13b | 481 | |
f127e61e MD |
482 | #undef _ctf_integer_ext |
483 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ | |
a90917c3 | 484 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
0d1d4002 | 485 | __event_len += sizeof(_type); |
6db3d13b | 486 | |
f127e61e | 487 | #undef _ctf_array_encoded |
3834b99f | 488 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
a90917c3 | 489 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
0d1d4002 | 490 | __event_len += sizeof(_type) * (_length); |
6db3d13b | 491 | |
43803cf2 MD |
492 | #undef _ctf_array_bitfield |
493 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
3834b99f | 494 | _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite) |
43803cf2 | 495 | |
f127e61e MD |
496 | #undef _ctf_sequence_encoded |
497 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 498 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
499 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_length_type)); \ |
500 | __event_len += sizeof(_length_type); \ | |
a90917c3 | 501 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
114667d5 MD |
502 | { \ |
503 | size_t __seqlen = (_src_length); \ | |
504 | \ | |
505 | if (unlikely(++this_cpu_ptr(<tng_dynamic_len_stack)->offset >= LTTNG_DYNAMIC_LEN_STACK_SIZE)) \ | |
506 | goto error; \ | |
507 | barrier(); /* reserve before use. */ \ | |
508 | this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = __seqlen; \ | |
509 | __event_len += sizeof(_type) * __seqlen; \ | |
510 | } | |
6db3d13b | 511 | |
43803cf2 MD |
512 | #undef _ctf_sequence_bitfield |
513 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
514 | _length_type, _src_length, \ | |
515 | _user, _nowrite) \ | |
516 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
517 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
518 | ||
d0255731 | 519 | /* |
f127e61e | 520 | * ctf_user_string includes \0. If returns 0, it faulted, so we set size to |
786b8312 | 521 | * 1 (\0 only). |
d0255731 | 522 | */ |
f127e61e MD |
523 | #undef _ctf_string |
524 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
114667d5 MD |
525 | if (unlikely(++this_cpu_ptr(<tng_dynamic_len_stack)->offset >= LTTNG_DYNAMIC_LEN_STACK_SIZE)) \ |
526 | goto error; \ | |
527 | barrier(); /* reserve before use. */ \ | |
528 | if (_user) { \ | |
529 | __event_len += this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = \ | |
96d0248a | 530 | max_t(size_t, lttng_strlen_user_inatomic(_src), 1); \ |
114667d5 MD |
531 | } else { \ |
532 | __event_len += this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = \ | |
1d84e8e7 | 533 | strlen((_src) ? (_src) : __LTTNG_NULL_STRING) + 1; \ |
114667d5 | 534 | } |
c6e3f225 | 535 | |
141ddf28 MD |
536 | #undef _ctf_enum |
537 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
538 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
539 | ||
f64dd4be MD |
540 | #undef ctf_align |
541 | #define ctf_align(_type) \ | |
542 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); | |
543 | ||
544 | #undef ctf_custom_field | |
545 | #define ctf_custom_field(_type, _item, _code) \ | |
546 | { \ | |
547 | _code \ | |
548 | } | |
549 | ||
550 | #undef ctf_custom_code | |
551 | #define ctf_custom_code(...) __VA_ARGS__ | |
552 | ||
0d1d4002 | 553 | #undef TP_PROTO |
f127e61e | 554 | #define TP_PROTO(...) __VA_ARGS__ |
6db3d13b | 555 | |
f127e61e MD |
556 | #undef TP_FIELDS |
557 | #define TP_FIELDS(...) __VA_ARGS__ | |
6db3d13b | 558 | |
7ca580f8 MD |
559 | #undef TP_locvar |
560 | #define TP_locvar(...) __VA_ARGS__ | |
561 | ||
3bc29f0a | 562 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 563 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
114667d5 | 564 | static inline ssize_t __event_get_size__##_name(void *__tp_locvar, _proto) \ |
0d1d4002 MD |
565 | { \ |
566 | size_t __event_len = 0; \ | |
d3de7f14 | 567 | unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \ |
7ca580f8 | 568 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
d3de7f14 | 569 | \ |
f127e61e | 570 | _fields \ |
d3de7f14 | 571 | return __event_len; \ |
114667d5 MD |
572 | \ |
573 | error: \ | |
574 | __attribute__((unused)); \ | |
575 | return -1; \ | |
d3de7f14 MD |
576 | } |
577 | ||
3bc29f0a | 578 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 579 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
114667d5 | 580 | static inline ssize_t __event_get_size__##_name(void *__tp_locvar) \ |
d3de7f14 MD |
581 | { \ |
582 | size_t __event_len = 0; \ | |
583 | unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \ | |
7ca580f8 | 584 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
0d1d4002 | 585 | \ |
f127e61e | 586 | _fields \ |
0d1d4002 | 587 | return __event_len; \ |
114667d5 MD |
588 | \ |
589 | error: \ | |
590 | __attribute__((unused)); \ | |
591 | return -1; \ | |
6db3d13b | 592 | } |
40652b65 MD |
593 | |
594 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
595 | ||
f127e61e | 596 | |
40652b65 | 597 | /* |
f127e61e | 598 | * Stage 4.1 of tracepoint event generation. |
e763dbf5 | 599 | * |
f127e61e MD |
600 | * Create static inline function that layout the filter stack data. |
601 | * We make both write and nowrite data available to the filter. | |
e763dbf5 MD |
602 | */ |
603 | ||
f127e61e | 604 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb MD |
605 | #include <lttng/events-reset.h> |
606 | #include <lttng/events-write.h> | |
607 | #include <lttng/events-nowrite.h> | |
f127e61e MD |
608 | |
609 | #undef _ctf_integer_ext_fetched | |
610 | #define _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
611 | if (lttng_is_signed_type(_type)) { \ | |
612 | int64_t __ctf_tmp_int64; \ | |
613 | switch (sizeof(_type)) { \ | |
614 | case 1: \ | |
615 | { \ | |
616 | union { _type t; int8_t v; } __tmp = { (_type) (_src) }; \ | |
617 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ | |
618 | break; \ | |
619 | } \ | |
620 | case 2: \ | |
621 | { \ | |
622 | union { _type t; int16_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
623 | if (_byte_order != __BYTE_ORDER) \ |
624 | __swab16s(&__tmp.v); \ | |
f127e61e MD |
625 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
626 | break; \ | |
627 | } \ | |
628 | case 4: \ | |
629 | { \ | |
630 | union { _type t; int32_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
631 | if (_byte_order != __BYTE_ORDER) \ |
632 | __swab32s(&__tmp.v); \ | |
f127e61e MD |
633 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
634 | break; \ | |
635 | } \ | |
636 | case 8: \ | |
637 | { \ | |
638 | union { _type t; int64_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
639 | if (_byte_order != __BYTE_ORDER) \ |
640 | __swab64s(&__tmp.v); \ | |
f127e61e MD |
641 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
642 | break; \ | |
643 | } \ | |
644 | default: \ | |
645 | BUG_ON(1); \ | |
646 | }; \ | |
647 | memcpy(__stack_data, &__ctf_tmp_int64, sizeof(int64_t)); \ | |
648 | } else { \ | |
649 | uint64_t __ctf_tmp_uint64; \ | |
650 | switch (sizeof(_type)) { \ | |
651 | case 1: \ | |
652 | { \ | |
653 | union { _type t; uint8_t v; } __tmp = { (_type) (_src) }; \ | |
654 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ | |
655 | break; \ | |
656 | } \ | |
657 | case 2: \ | |
658 | { \ | |
659 | union { _type t; uint16_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
660 | if (_byte_order != __BYTE_ORDER) \ |
661 | __swab16s(&__tmp.v); \ | |
f127e61e MD |
662 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
663 | break; \ | |
664 | } \ | |
665 | case 4: \ | |
666 | { \ | |
667 | union { _type t; uint32_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
668 | if (_byte_order != __BYTE_ORDER) \ |
669 | __swab32s(&__tmp.v); \ | |
f127e61e MD |
670 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
671 | break; \ | |
672 | } \ | |
673 | case 8: \ | |
674 | { \ | |
675 | union { _type t; uint64_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
676 | if (_byte_order != __BYTE_ORDER) \ |
677 | __swab64s(&__tmp.v); \ | |
f127e61e MD |
678 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
679 | break; \ | |
680 | } \ | |
681 | default: \ | |
682 | BUG_ON(1); \ | |
683 | }; \ | |
684 | memcpy(__stack_data, &__ctf_tmp_uint64, sizeof(uint64_t)); \ | |
685 | } \ | |
686 | __stack_data += sizeof(int64_t); | |
687 | ||
688 | #undef _ctf_integer_ext_isuser0 | |
689 | #define _ctf_integer_ext_isuser0(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
690 | _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) | |
691 | ||
692 | #undef _ctf_integer_ext_isuser1 | |
693 | #define _ctf_integer_ext_isuser1(_type, _item, _user_src, _byte_order, _base, _nowrite) \ | |
3c8ebbc8 MD |
694 | { \ |
695 | union { \ | |
696 | char __array[sizeof(_user_src)]; \ | |
697 | __typeof__(_user_src) __v; \ | |
698 | } __tmp_fetch; \ | |
699 | if (lib_ring_buffer_copy_from_user_check_nofault(__tmp_fetch.__array, \ | |
700 | &(_user_src), sizeof(_user_src))) \ | |
701 | memset(__tmp_fetch.__array, 0, sizeof(__tmp_fetch.__array)); \ | |
702 | _ctf_integer_ext_fetched(_type, _item, __tmp_fetch.__v, _byte_order, _base, _nowrite) \ | |
f127e61e | 703 | } |
e763dbf5 | 704 | |
f127e61e MD |
705 | #undef _ctf_integer_ext |
706 | #define _ctf_integer_ext(_type, _item, _user_src, _byte_order, _base, _user, _nowrite) \ | |
707 | _ctf_integer_ext_isuser##_user(_type, _item, _user_src, _byte_order, _base, _nowrite) | |
708 | ||
709 | #undef _ctf_array_encoded | |
3834b99f | 710 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
711 | { \ |
712 | unsigned long __ctf_tmp_ulong = (unsigned long) (_length); \ | |
713 | const void *__ctf_tmp_ptr = (_src); \ | |
714 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ | |
715 | __stack_data += sizeof(unsigned long); \ | |
6b272cda MD |
716 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
717 | __stack_data += sizeof(void *); \ | |
f127e61e MD |
718 | } |
719 | ||
43803cf2 MD |
720 | #undef _ctf_array_bitfield |
721 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
3834b99f | 722 | _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite) |
43803cf2 | 723 | |
f127e61e MD |
724 | #undef _ctf_sequence_encoded |
725 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 726 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
727 | { \ |
728 | unsigned long __ctf_tmp_ulong = (unsigned long) (_src_length); \ | |
729 | const void *__ctf_tmp_ptr = (_src); \ | |
730 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ | |
731 | __stack_data += sizeof(unsigned long); \ | |
6b272cda MD |
732 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
733 | __stack_data += sizeof(void *); \ | |
f127e61e MD |
734 | } |
735 | ||
43803cf2 MD |
736 | #undef _ctf_sequence_bitfield |
737 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
738 | _length_type, _src_length, \ | |
739 | _user, _nowrite) \ | |
740 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
741 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
742 | ||
f127e61e MD |
743 | #undef _ctf_string |
744 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
745 | { \ | |
1d84e8e7 MD |
746 | const void *__ctf_tmp_ptr = \ |
747 | ((_src) ? (_src) : __LTTNG_NULL_STRING); \ | |
6b272cda MD |
748 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
749 | __stack_data += sizeof(void *); \ | |
f127e61e | 750 | } |
c6e3f225 | 751 | |
141ddf28 MD |
752 | #undef _ctf_enum |
753 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
754 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
755 | ||
e763dbf5 | 756 | #undef TP_PROTO |
f127e61e | 757 | #define TP_PROTO(...) __VA_ARGS__ |
e763dbf5 | 758 | |
f127e61e MD |
759 | #undef TP_FIELDS |
760 | #define TP_FIELDS(...) __VA_ARGS__ | |
e763dbf5 | 761 | |
7ca580f8 MD |
762 | #undef TP_locvar |
763 | #define TP_locvar(...) __VA_ARGS__ | |
764 | ||
f127e61e | 765 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 766 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
767 | static inline \ |
768 | void __event_prepare_filter_stack__##_name(char *__stack_data, \ | |
769 | void *__tp_locvar) \ | |
e763dbf5 | 770 | { \ |
7ca580f8 MD |
771 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
772 | \ | |
f127e61e | 773 | _fields \ |
e763dbf5 MD |
774 | } |
775 | ||
f127e61e | 776 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 777 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
778 | static inline \ |
779 | void __event_prepare_filter_stack__##_name(char *__stack_data, \ | |
780 | void *__tp_locvar, _proto) \ | |
d3de7f14 | 781 | { \ |
7ca580f8 MD |
782 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
783 | \ | |
f127e61e | 784 | _fields \ |
d3de7f14 MD |
785 | } |
786 | ||
e763dbf5 MD |
787 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
788 | ||
e763dbf5 | 789 | /* |
f127e61e | 790 | * Stage 5 of the trace events. |
40652b65 | 791 | * |
f127e61e | 792 | * Create static inline function that calculates event payload alignment. |
3c4ffab9 MD |
793 | */ |
794 | ||
f127e61e | 795 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb MD |
796 | #include <lttng/events-reset.h> |
797 | #include <lttng/events-write.h> | |
3c4ffab9 | 798 | |
f127e61e MD |
799 | #undef _ctf_integer_ext |
800 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ | |
801 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
3c4ffab9 | 802 | |
f127e61e | 803 | #undef _ctf_array_encoded |
3834b99f | 804 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e | 805 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); |
3c4ffab9 | 806 | |
43803cf2 MD |
807 | #undef _ctf_array_bitfield |
808 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
3834b99f | 809 | _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite) |
43803cf2 | 810 | |
f127e61e MD |
811 | #undef _ctf_sequence_encoded |
812 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 813 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
814 | __event_align = max_t(size_t, __event_align, lttng_alignof(_length_type)); \ |
815 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
64c796d8 | 816 | |
43803cf2 MD |
817 | #undef _ctf_sequence_bitfield |
818 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
819 | _length_type, _src_length, \ | |
820 | _user, _nowrite) \ | |
821 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
822 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
823 | ||
f127e61e MD |
824 | #undef _ctf_string |
825 | #define _ctf_string(_item, _src, _user, _nowrite) | |
64c796d8 | 826 | |
141ddf28 MD |
827 | #undef _ctf_enum |
828 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
829 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
830 | ||
f64dd4be MD |
831 | #undef ctf_align |
832 | #define ctf_align(_type) \ | |
833 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
834 | ||
f127e61e MD |
835 | #undef TP_PROTO |
836 | #define TP_PROTO(...) __VA_ARGS__ | |
84da5206 | 837 | |
f127e61e MD |
838 | #undef TP_FIELDS |
839 | #define TP_FIELDS(...) __VA_ARGS__ | |
c6e3f225 | 840 | |
f127e61e MD |
841 | #undef TP_locvar |
842 | #define TP_locvar(...) __VA_ARGS__ | |
3c4ffab9 | 843 | |
f64dd4be MD |
844 | #undef ctf_custom_field |
845 | #define ctf_custom_field(_type, _item, _code) _code | |
846 | ||
847 | #undef ctf_custom_code | |
848 | #define ctf_custom_code(...) \ | |
849 | { \ | |
850 | __VA_ARGS__ \ | |
851 | } | |
852 | ||
f127e61e | 853 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 854 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
855 | static inline size_t __event_get_align__##_name(void *__tp_locvar, _proto) \ |
856 | { \ | |
857 | size_t __event_align = 1; \ | |
858 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ | |
859 | \ | |
860 | _fields \ | |
861 | return __event_align; \ | |
862 | } | |
3c4ffab9 | 863 | |
3bc29f0a | 864 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 865 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
866 | static inline size_t __event_get_align__##_name(void *__tp_locvar) \ |
867 | { \ | |
868 | size_t __event_align = 1; \ | |
869 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ | |
870 | \ | |
871 | _fields \ | |
872 | return __event_align; \ | |
873 | } | |
d3de7f14 | 874 | |
3c4ffab9 MD |
875 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
876 | ||
3c4ffab9 | 877 | /* |
f127e61e | 878 | * Stage 6 of tracepoint event generation. |
e763dbf5 | 879 | * |
f127e61e MD |
880 | * Create the probe function. This function calls event size calculation |
881 | * and writes event data into the buffer. | |
40652b65 MD |
882 | */ |
883 | ||
f127e61e | 884 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb MD |
885 | #include <lttng/events-reset.h> |
886 | #include <lttng/events-write.h> | |
c6e3f225 | 887 | |
f127e61e MD |
888 | #undef _ctf_integer_ext_fetched |
889 | #define _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
e763dbf5 | 890 | { \ |
f127e61e MD |
891 | _type __tmp = _src; \ |
892 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\ | |
aaa4004a | 893 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ |
f127e61e MD |
894 | } |
895 | ||
896 | #undef _ctf_integer_ext_isuser0 | |
897 | #define _ctf_integer_ext_isuser0(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
898 | _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) | |
899 | ||
900 | #undef _ctf_integer_ext_isuser1 | |
901 | #define _ctf_integer_ext_isuser1(_type, _item, _user_src, _byte_order, _base, _nowrite) \ | |
902 | { \ | |
3c8ebbc8 MD |
903 | union { \ |
904 | char __array[sizeof(_user_src)]; \ | |
905 | __typeof__(_user_src) __v; \ | |
906 | } __tmp_fetch; \ | |
907 | if (lib_ring_buffer_copy_from_user_check_nofault(__tmp_fetch.__array, \ | |
908 | &(_user_src), sizeof(_user_src))) \ | |
909 | memset(__tmp_fetch.__array, 0, sizeof(__tmp_fetch.__array)); \ | |
910 | _ctf_integer_ext_fetched(_type, _item, __tmp_fetch.__v, _byte_order, _base, _nowrite) \ | |
f127e61e MD |
911 | } |
912 | ||
913 | #undef _ctf_integer_ext | |
914 | #define _ctf_integer_ext(_type, _item, _user_src, _byte_order, _base, _user, _nowrite) \ | |
915 | _ctf_integer_ext_isuser##_user(_type, _item, _user_src, _byte_order, _base, _nowrite) | |
916 | ||
917 | #undef _ctf_array_encoded | |
3834b99f | 918 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
919 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ |
920 | if (_user) { \ | |
921 | __chan->ops->event_write_from_user(&__ctx, _src, sizeof(_type) * (_length)); \ | |
922 | } else { \ | |
923 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); \ | |
924 | } | |
925 | ||
43803cf2 MD |
926 | #if (__BYTE_ORDER == __LITTLE_ENDIAN) |
927 | #undef _ctf_array_bitfield | |
928 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
929 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
930 | if (_user) { \ | |
931 | __chan->ops->event_write_from_user(&__ctx, _src, sizeof(_type) * (_length)); \ | |
932 | } else { \ | |
933 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); \ | |
934 | } | |
935 | #else /* #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
936 | /* | |
937 | * For big endian, we need to byteswap into little endian. | |
938 | */ | |
939 | #undef _ctf_array_bitfield | |
940 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
941 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
942 | { \ | |
943 | size_t _i; \ | |
944 | \ | |
945 | for (_i = 0; _i < (_length); _i++) { \ | |
946 | _type _tmp; \ | |
947 | \ | |
948 | if (_user) { \ | |
949 | if (get_user(_tmp, (_type *) _src + _i)) \ | |
950 | _tmp = 0; \ | |
951 | } else { \ | |
952 | _tmp = ((_type *) _src)[_i]; \ | |
953 | } \ | |
954 | switch (sizeof(_type)) { \ | |
955 | case 1: \ | |
956 | break; \ | |
957 | case 2: \ | |
958 | _tmp = cpu_to_le16(_tmp); \ | |
959 | break; \ | |
960 | case 4: \ | |
961 | _tmp = cpu_to_le32(_tmp); \ | |
962 | break; \ | |
963 | case 8: \ | |
964 | _tmp = cpu_to_le64(_tmp); \ | |
965 | break; \ | |
966 | default: \ | |
967 | BUG_ON(1); \ | |
968 | } \ | |
969 | __chan->ops->event_write(&__ctx, &_tmp, sizeof(_type)); \ | |
970 | } \ | |
971 | } | |
972 | #endif /* #else #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
973 | ||
f127e61e MD |
974 | #undef _ctf_sequence_encoded |
975 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 976 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
84da5206 | 977 | { \ |
114667d5 | 978 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx]; \ |
f127e61e MD |
979 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
980 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
84da5206 | 981 | } \ |
f127e61e MD |
982 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ |
983 | if (_user) { \ | |
984 | __chan->ops->event_write_from_user(&__ctx, _src, \ | |
985 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
986 | } else { \ | |
987 | __chan->ops->event_write(&__ctx, _src, \ | |
988 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
989 | } | |
990 | ||
43803cf2 MD |
991 | #if (__BYTE_ORDER == __LITTLE_ENDIAN) |
992 | #undef _ctf_sequence_bitfield | |
993 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
994 | _length_type, _src_length, \ | |
995 | _user, _nowrite) \ | |
996 | { \ | |
114667d5 | 997 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx] * sizeof(_type) * CHAR_BIT; \ |
43803cf2 MD |
998 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
999 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
1000 | } \ | |
1001 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
1002 | if (_user) { \ | |
1003 | __chan->ops->event_write_from_user(&__ctx, _src, \ | |
1004 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
1005 | } else { \ | |
1006 | __chan->ops->event_write(&__ctx, _src, \ | |
1007 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
1008 | } | |
1009 | #else /* #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
1010 | /* | |
1011 | * For big endian, we need to byteswap into little endian. | |
1012 | */ | |
1013 | #undef _ctf_sequence_bitfield | |
1014 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
1015 | _length_type, _src_length, \ | |
1016 | _user, _nowrite) \ | |
1017 | { \ | |
114667d5 | 1018 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx] * sizeof(_type) * CHAR_BIT; \ |
43803cf2 MD |
1019 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
1020 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
1021 | } \ | |
1022 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
1023 | { \ | |
1024 | size_t _i, _length; \ | |
1025 | \ | |
1026 | _length = __get_dynamic_len(dest); \ | |
1027 | for (_i = 0; _i < _length; _i++) { \ | |
1028 | _type _tmp; \ | |
1029 | \ | |
1030 | if (_user) { \ | |
1031 | if (get_user(_tmp, (_type *) _src + _i)) \ | |
1032 | _tmp = 0; \ | |
1033 | } else { \ | |
1034 | _tmp = ((_type *) _src)[_i]; \ | |
1035 | } \ | |
1036 | switch (sizeof(_type)) { \ | |
1037 | case 1: \ | |
1038 | break; \ | |
1039 | case 2: \ | |
1040 | _tmp = cpu_to_le16(_tmp); \ | |
1041 | break; \ | |
1042 | case 4: \ | |
1043 | _tmp = cpu_to_le32(_tmp); \ | |
1044 | break; \ | |
1045 | case 8: \ | |
1046 | _tmp = cpu_to_le64(_tmp); \ | |
1047 | break; \ | |
1048 | default: \ | |
1049 | BUG_ON(1); \ | |
1050 | } \ | |
1051 | __chan->ops->event_write(&__ctx, &_tmp, sizeof(_type)); \ | |
1052 | } \ | |
1053 | } | |
1054 | #endif /* #else #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
1055 | ||
f127e61e MD |
1056 | #undef _ctf_string |
1057 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
f127e61e | 1058 | if (_user) { \ |
1d84e8e7 | 1059 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(*(_src))); \ |
f127e61e MD |
1060 | __chan->ops->event_strcpy_from_user(&__ctx, _src, \ |
1061 | __get_dynamic_len(dest)); \ | |
1062 | } else { \ | |
1d84e8e7 MD |
1063 | const char *__ctf_tmp_string = \ |
1064 | ((_src) ? (_src) : __LTTNG_NULL_STRING); \ | |
1065 | lib_ring_buffer_align_ctx(&__ctx, \ | |
1066 | lttng_alignof(*__ctf_tmp_string)); \ | |
1067 | __chan->ops->event_strcpy(&__ctx, __ctf_tmp_string, \ | |
f127e61e MD |
1068 | __get_dynamic_len(dest)); \ |
1069 | } | |
e763dbf5 | 1070 | |
141ddf28 MD |
1071 | #undef _ctf_enum |
1072 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
1073 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
f64dd4be MD |
1074 | |
1075 | #undef ctf_align | |
1076 | #define ctf_align(_type) \ | |
1077 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); | |
1078 | ||
1079 | #undef ctf_custom_field | |
1080 | #define ctf_custom_field(_type, _item, _code) _code | |
1081 | ||
1082 | #undef ctf_custom_code | |
1083 | #define ctf_custom_code(...) \ | |
1084 | { \ | |
1085 | __VA_ARGS__ \ | |
1086 | } | |
1087 | ||
e763dbf5 | 1088 | /* Beware: this get len actually consumes the len value */ |
f127e61e | 1089 | #undef __get_dynamic_len |
114667d5 | 1090 | #define __get_dynamic_len(field) this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx++] |
e763dbf5 MD |
1091 | |
1092 | #undef TP_PROTO | |
f127e61e | 1093 | #define TP_PROTO(...) __VA_ARGS__ |
e763dbf5 MD |
1094 | |
1095 | #undef TP_ARGS | |
f127e61e | 1096 | #define TP_ARGS(...) __VA_ARGS__ |
e763dbf5 | 1097 | |
f127e61e MD |
1098 | #undef TP_FIELDS |
1099 | #define TP_FIELDS(...) __VA_ARGS__ | |
e763dbf5 | 1100 | |
7ca580f8 MD |
1101 | #undef TP_locvar |
1102 | #define TP_locvar(...) __VA_ARGS__ | |
1103 | ||
265822ae MD |
1104 | #undef TP_code_pre |
1105 | #define TP_code_pre(...) __VA_ARGS__ | |
1106 | ||
1107 | #undef TP_code_post | |
1108 | #define TP_code_post(...) __VA_ARGS__ | |
7ca580f8 | 1109 | |
c337ddc2 MD |
1110 | /* |
1111 | * For state dump, check that "session" argument (mandatory) matches the | |
1112 | * session this event belongs to. Ensures that we write state dump data only | |
1113 | * into the started session, not into all sessions. | |
1114 | */ | |
1115 | #ifdef TP_SESSION_CHECK | |
1116 | #define _TP_SESSION_CHECK(session, csession) (session == csession) | |
1117 | #else /* TP_SESSION_CHECK */ | |
1118 | #define _TP_SESSION_CHECK(session, csession) 1 | |
1119 | #endif /* TP_SESSION_CHECK */ | |
1120 | ||
f9771d39 | 1121 | /* |
f127e61e MD |
1122 | * Using twice size for filter stack data to hold size and pointer for |
1123 | * each field (worse case). For integers, max size required is 64-bit. | |
1124 | * Same for double-precision floats. Those fit within | |
1125 | * 2*sizeof(unsigned long) for all supported architectures. | |
1126 | * Perform UNION (||) of filter runtime list. | |
f9771d39 | 1127 | */ |
3bc29f0a | 1128 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 1129 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
e763dbf5 MD |
1130 | static void __event_probe__##_name(void *__data, _proto) \ |
1131 | { \ | |
7ca580f8 | 1132 | struct probe_local_vars { _locvar }; \ |
a90917c3 | 1133 | struct lttng_event *__event = __data; \ |
79150a49 JD |
1134 | struct lttng_probe_ctx __lttng_probe_ctx = { \ |
1135 | .event = __event, \ | |
ccecf3fb | 1136 | .interruptible = !irqs_disabled(), \ |
79150a49 | 1137 | }; \ |
a90917c3 | 1138 | struct lttng_channel *__chan = __event->chan; \ |
e0130fab | 1139 | struct lttng_session *__session = __chan->session; \ |
aaa4004a | 1140 | struct lib_ring_buffer_ctx __ctx; \ |
114667d5 MD |
1141 | ssize_t __event_len; \ |
1142 | size_t __event_align; \ | |
ec0a7fba | 1143 | size_t __orig_dynamic_len_offset, __dynamic_len_idx __attribute__((unused)); \ |
f127e61e | 1144 | union { \ |
114667d5 | 1145 | size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)]; \ |
f127e61e MD |
1146 | char __filter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \ |
1147 | } __stackvar; \ | |
e763dbf5 | 1148 | int __ret; \ |
7ca580f8 MD |
1149 | struct probe_local_vars __tp_locvar; \ |
1150 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
1151 | &__tp_locvar; \ | |
d1f652f8 | 1152 | struct lttng_id_tracker_rcu *__lf; \ |
e763dbf5 | 1153 | \ |
e0130fab | 1154 | if (!_TP_SESSION_CHECK(session, __session)) \ |
c337ddc2 | 1155 | return; \ |
a8f2d0c7 | 1156 | if (unlikely(!READ_ONCE(__session->active))) \ |
e64957da | 1157 | return; \ |
a8f2d0c7 | 1158 | if (unlikely(!READ_ONCE(__chan->enabled))) \ |
e64957da | 1159 | return; \ |
a8f2d0c7 | 1160 | if (unlikely(!READ_ONCE(__event->enabled))) \ |
52fc2e1f | 1161 | return; \ |
d1f652f8 MD |
1162 | __lf = lttng_rcu_dereference(__session->pid_tracker.p); \ |
1163 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, current->tgid))) \ | |
1164 | return; \ | |
1165 | __lf = lttng_rcu_dereference(__session->vpid_tracker.p); \ | |
1166 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, task_tgid_vnr(current)))) \ | |
1167 | return; \ | |
1168 | __lf = lttng_rcu_dereference(__session->uid_tracker.p); \ | |
1169 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1170 | lttng_current_uid()))) \ |
d1f652f8 MD |
1171 | return; \ |
1172 | __lf = lttng_rcu_dereference(__session->vuid_tracker.p); \ | |
1173 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1174 | lttng_current_vuid()))) \ |
d1f652f8 MD |
1175 | return; \ |
1176 | __lf = lttng_rcu_dereference(__session->gid_tracker.p); \ | |
1177 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1178 | lttng_current_gid()))) \ |
d1f652f8 MD |
1179 | return; \ |
1180 | __lf = lttng_rcu_dereference(__session->vgid_tracker.p); \ | |
1181 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1182 | lttng_current_vgid()))) \ |
e0130fab | 1183 | return; \ |
114667d5 MD |
1184 | __orig_dynamic_len_offset = this_cpu_ptr(<tng_dynamic_len_stack)->offset; \ |
1185 | __dynamic_len_idx = __orig_dynamic_len_offset; \ | |
265822ae | 1186 | _code_pre \ |
f127e61e MD |
1187 | if (unlikely(!list_empty(&__event->bytecode_runtime_head))) { \ |
1188 | struct lttng_bytecode_runtime *bc_runtime; \ | |
1189 | int __filter_record = __event->has_enablers_without_bytecode; \ | |
1190 | \ | |
1191 | __event_prepare_filter_stack__##_name(__stackvar.__filter_stack_data, \ | |
1192 | tp_locvar, _args); \ | |
7a09dcb7 | 1193 | lttng_list_for_each_entry_rcu(bc_runtime, &__event->bytecode_runtime_head, node) { \ |
79150a49 | 1194 | if (unlikely(bc_runtime->filter(bc_runtime, &__lttng_probe_ctx, \ |
8904bcfa | 1195 | __stackvar.__filter_stack_data) & LTTNG_FILTER_RECORD_FLAG)) { \ |
f127e61e | 1196 | __filter_record = 1; \ |
8904bcfa FD |
1197 | break; \ |
1198 | } \ | |
f127e61e MD |
1199 | } \ |
1200 | if (likely(!__filter_record)) \ | |
265822ae | 1201 | goto __post; \ |
f127e61e | 1202 | } \ |
114667d5 MD |
1203 | __event_len = __event_get_size__##_name(tp_locvar, _args); \ |
1204 | if (unlikely(__event_len < 0)) { \ | |
1205 | lib_ring_buffer_lost_event_too_big(__chan->chan); \ | |
1206 | goto __post; \ | |
1207 | } \ | |
7ca580f8 | 1208 | __event_align = __event_get_align__##_name(tp_locvar, _args); \ |
79150a49 | 1209 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, &__lttng_probe_ctx, __event_len, \ |
e763dbf5 | 1210 | __event_align, -1); \ |
aaa4004a | 1211 | __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ |
e763dbf5 | 1212 | if (__ret < 0) \ |
265822ae | 1213 | goto __post; \ |
f127e61e | 1214 | _fields \ |
aaa4004a | 1215 | __chan->ops->event_commit(&__ctx); \ |
265822ae MD |
1216 | __post: \ |
1217 | _code_post \ | |
114667d5 MD |
1218 | barrier(); /* use before un-reserve. */ \ |
1219 | this_cpu_ptr(<tng_dynamic_len_stack)->offset = __orig_dynamic_len_offset; \ | |
265822ae | 1220 | return; \ |
e763dbf5 MD |
1221 | } |
1222 | ||
3bc29f0a | 1223 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 1224 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f7bdf4db MD |
1225 | static void __event_probe__##_name(void *__data) \ |
1226 | { \ | |
7ca580f8 | 1227 | struct probe_local_vars { _locvar }; \ |
a90917c3 | 1228 | struct lttng_event *__event = __data; \ |
79150a49 JD |
1229 | struct lttng_probe_ctx __lttng_probe_ctx = { \ |
1230 | .event = __event, \ | |
ccecf3fb | 1231 | .interruptible = !irqs_disabled(), \ |
79150a49 | 1232 | }; \ |
a90917c3 | 1233 | struct lttng_channel *__chan = __event->chan; \ |
e0130fab | 1234 | struct lttng_session *__session = __chan->session; \ |
f7bdf4db | 1235 | struct lib_ring_buffer_ctx __ctx; \ |
114667d5 MD |
1236 | ssize_t __event_len; \ |
1237 | size_t __event_align; \ | |
ec0a7fba | 1238 | size_t __orig_dynamic_len_offset, __dynamic_len_idx __attribute__((unused)); \ |
f127e61e | 1239 | union { \ |
114667d5 | 1240 | size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)]; \ |
f127e61e MD |
1241 | char __filter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \ |
1242 | } __stackvar; \ | |
f7bdf4db | 1243 | int __ret; \ |
7ca580f8 MD |
1244 | struct probe_local_vars __tp_locvar; \ |
1245 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
1246 | &__tp_locvar; \ | |
d1f652f8 | 1247 | struct lttng_id_tracker_rcu *__lf; \ |
f7bdf4db | 1248 | \ |
e0130fab | 1249 | if (!_TP_SESSION_CHECK(session, __session)) \ |
c337ddc2 | 1250 | return; \ |
a8f2d0c7 | 1251 | if (unlikely(!READ_ONCE(__session->active))) \ |
f7bdf4db | 1252 | return; \ |
a8f2d0c7 | 1253 | if (unlikely(!READ_ONCE(__chan->enabled))) \ |
f7bdf4db | 1254 | return; \ |
a8f2d0c7 | 1255 | if (unlikely(!READ_ONCE(__event->enabled))) \ |
f7bdf4db | 1256 | return; \ |
d1f652f8 MD |
1257 | __lf = lttng_rcu_dereference(__session->pid_tracker.p); \ |
1258 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, current->tgid))) \ | |
1259 | return; \ | |
1260 | __lf = lttng_rcu_dereference(__session->vpid_tracker.p); \ | |
1261 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, task_tgid_vnr(current)))) \ | |
1262 | return; \ | |
1263 | __lf = lttng_rcu_dereference(__session->uid_tracker.p); \ | |
1264 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1265 | lttng_current_uid()))) \ |
d1f652f8 MD |
1266 | return; \ |
1267 | __lf = lttng_rcu_dereference(__session->vuid_tracker.p); \ | |
1268 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1269 | lttng_current_vuid()))) \ |
d1f652f8 MD |
1270 | return; \ |
1271 | __lf = lttng_rcu_dereference(__session->gid_tracker.p); \ | |
1272 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1273 | lttng_current_gid()))) \ |
d1f652f8 MD |
1274 | return; \ |
1275 | __lf = lttng_rcu_dereference(__session->vgid_tracker.p); \ | |
1276 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1277 | lttng_current_vgid()))) \ |
e0130fab | 1278 | return; \ |
114667d5 MD |
1279 | __orig_dynamic_len_offset = this_cpu_ptr(<tng_dynamic_len_stack)->offset; \ |
1280 | __dynamic_len_idx = __orig_dynamic_len_offset; \ | |
265822ae | 1281 | _code_pre \ |
f127e61e MD |
1282 | if (unlikely(!list_empty(&__event->bytecode_runtime_head))) { \ |
1283 | struct lttng_bytecode_runtime *bc_runtime; \ | |
1284 | int __filter_record = __event->has_enablers_without_bytecode; \ | |
1285 | \ | |
1286 | __event_prepare_filter_stack__##_name(__stackvar.__filter_stack_data, \ | |
1287 | tp_locvar); \ | |
7a09dcb7 | 1288 | lttng_list_for_each_entry_rcu(bc_runtime, &__event->bytecode_runtime_head, node) { \ |
79150a49 | 1289 | if (unlikely(bc_runtime->filter(bc_runtime, &__lttng_probe_ctx, \ |
8904bcfa | 1290 | __stackvar.__filter_stack_data) & LTTNG_FILTER_RECORD_FLAG)) { \ |
f127e61e | 1291 | __filter_record = 1; \ |
8904bcfa FD |
1292 | break; \ |
1293 | } \ | |
f127e61e MD |
1294 | } \ |
1295 | if (likely(!__filter_record)) \ | |
265822ae | 1296 | goto __post; \ |
f127e61e | 1297 | } \ |
114667d5 MD |
1298 | __event_len = __event_get_size__##_name(tp_locvar); \ |
1299 | if (unlikely(__event_len < 0)) { \ | |
1300 | lib_ring_buffer_lost_event_too_big(__chan->chan); \ | |
1301 | goto __post; \ | |
1302 | } \ | |
7ca580f8 | 1303 | __event_align = __event_get_align__##_name(tp_locvar); \ |
79150a49 | 1304 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, &__lttng_probe_ctx, __event_len, \ |
f7bdf4db MD |
1305 | __event_align, -1); \ |
1306 | __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ | |
1307 | if (__ret < 0) \ | |
265822ae | 1308 | goto __post; \ |
f127e61e | 1309 | _fields \ |
f7bdf4db | 1310 | __chan->ops->event_commit(&__ctx); \ |
265822ae MD |
1311 | __post: \ |
1312 | _code_post \ | |
114667d5 MD |
1313 | barrier(); /* use before un-reserve. */ \ |
1314 | this_cpu_ptr(<tng_dynamic_len_stack)->offset = __orig_dynamic_len_offset; \ | |
265822ae | 1315 | return; \ |
f7bdf4db MD |
1316 | } |
1317 | ||
e763dbf5 MD |
1318 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
1319 | ||
f127e61e MD |
1320 | #undef __get_dynamic_len |
1321 | ||
1322 | /* | |
1323 | * Stage 7 of the trace events. | |
1324 | * | |
1325 | * Create event descriptions. | |
1326 | */ | |
1327 | ||
1328 | /* Named field types must be defined in lttng-types.h */ | |
1329 | ||
3b4aafcb | 1330 | #include <lttng/events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
f127e61e MD |
1331 | |
1332 | #ifndef TP_PROBE_CB | |
1333 | #define TP_PROBE_CB(_template) &__event_probe__##_template | |
1334 | #endif | |
1335 | ||
1336 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
1337 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
1338 | static const struct lttng_event_desc __event_desc___##_map = { \ | |
1339 | .fields = __event_fields___##_template, \ | |
1340 | .name = #_map, \ | |
1341 | .kname = #_name, \ | |
1342 | .probe_callback = (void *) TP_PROBE_CB(_template), \ | |
1343 | .nr_fields = ARRAY_SIZE(__event_fields___##_template), \ | |
1344 | .owner = THIS_MODULE, \ | |
1345 | }; | |
1346 | ||
1347 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
1348 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
1349 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) | |
1350 | ||
1351 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
1352 | ||
1353 | /* | |
1354 | * Stage 8 of the trace events. | |
1355 | * | |
1356 | * Create an array of event description pointers. | |
1357 | */ | |
1358 | ||
3b4aafcb | 1359 | #include <lttng/events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
f127e61e MD |
1360 | |
1361 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
1362 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
1363 | &__event_desc___##_map, | |
1364 | ||
1365 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
1366 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
1367 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) | |
1368 | ||
1369 | #define TP_ID1(_token, _system) _token##_system | |
1370 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1371 | ||
1372 | static const struct lttng_event_desc *TP_ID(__event_desc___, TRACE_SYSTEM)[] = { | |
1373 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
1374 | }; | |
1375 | ||
1376 | #undef TP_ID1 | |
1377 | #undef TP_ID | |
1378 | ||
1379 | /* | |
1380 | * Stage 9 of the trace events. | |
1381 | * | |
1382 | * Create a toplevel descriptor for the whole probe. | |
1383 | */ | |
1384 | ||
1385 | #define TP_ID1(_token, _system) _token##_system | |
1386 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1387 | ||
1388 | /* non-const because list head will be modified when registered. */ | |
1389 | static __used struct lttng_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = { | |
1390 | .provider = __stringify(TRACE_SYSTEM), | |
1391 | .event_desc = TP_ID(__event_desc___, TRACE_SYSTEM), | |
1392 | .nr_events = ARRAY_SIZE(TP_ID(__event_desc___, TRACE_SYSTEM)), | |
1393 | .head = { NULL, NULL }, | |
1394 | .lazy_init_head = { NULL, NULL }, | |
1395 | .lazy = 0, | |
1396 | }; | |
1397 | ||
1398 | #undef TP_ID1 | |
1399 | #undef TP_ID | |
1400 | ||
3afe7aac | 1401 | /* |
c099397a | 1402 | * Stage 10 of the trace events. |
3afe7aac MD |
1403 | * |
1404 | * Register/unregister probes at module load/unload. | |
1405 | */ | |
1406 | ||
3b4aafcb | 1407 | #include <lttng/events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
3afe7aac MD |
1408 | |
1409 | #define TP_ID1(_token, _system) _token##_system | |
1410 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1411 | #define module_init_eval1(_token, _system) module_init(_token##_system) | |
1412 | #define module_init_eval(_token, _system) module_init_eval1(_token, _system) | |
1413 | #define module_exit_eval1(_token, _system) module_exit(_token##_system) | |
1414 | #define module_exit_eval(_token, _system) module_exit_eval1(_token, _system) | |
1415 | ||
2655f9ad | 1416 | #ifndef TP_MODULE_NOINIT |
3afe7aac MD |
1417 | static int TP_ID(__lttng_events_init__, TRACE_SYSTEM)(void) |
1418 | { | |
263b6c88 | 1419 | wrapper_vmalloc_sync_mappings(); |
a90917c3 | 1420 | return lttng_probe_register(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
1421 | } |
1422 | ||
3afe7aac MD |
1423 | static void TP_ID(__lttng_events_exit__, TRACE_SYSTEM)(void) |
1424 | { | |
a90917c3 | 1425 | lttng_probe_unregister(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
1426 | } |
1427 | ||
2655f9ad MD |
1428 | #ifndef TP_MODULE_NOAUTOLOAD |
1429 | module_init_eval(__lttng_events_init__, TRACE_SYSTEM); | |
3afe7aac | 1430 | module_exit_eval(__lttng_events_exit__, TRACE_SYSTEM); |
259b6cb3 | 1431 | #endif |
3afe7aac | 1432 | |
2655f9ad MD |
1433 | #endif |
1434 | ||
3afe7aac MD |
1435 | #undef module_init_eval |
1436 | #undef module_exit_eval | |
1437 | #undef TP_ID1 | |
1438 | #undef TP_ID | |
177b3692 MD |
1439 | |
1440 | #undef TP_PROTO | |
1441 | #undef TP_ARGS |