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17baffe2 | 1 | /* |
451e462f | 2 | * lttng-tracepoint-event-impl.h |
17baffe2 MD |
3 | * |
4 | * Copyright (C) 2009 Steven Rostedt <rostedt@goodmis.org> | |
f127e61e | 5 | * Copyright (C) 2009-2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
17baffe2 | 6 | * |
886d51a3 MD |
7 | * This library is free software; you can redistribute it and/or |
8 | * modify it under the terms of the GNU Lesser General Public | |
9 | * License as published by the Free Software Foundation; only | |
10 | * version 2.1 of the License. | |
11 | * | |
12 | * This library is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public | |
18 | * License along with this library; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
17baffe2 | 20 | */ |
f127e61e | 21 | |
d28686c1 | 22 | #include <linux/uaccess.h> |
d0dd2ecb | 23 | #include <linux/debugfs.h> |
f127e61e | 24 | #include <linux/rculist.h> |
43803cf2 | 25 | #include <asm/byteorder.h> |
814f7d25 | 26 | #include <linux/swab.h> |
8d43abb7 MD |
27 | |
28 | #include <probes/lttng.h> | |
29 | #include <probes/lttng-types.h> | |
30 | #include <probes/lttng-probe-user.h> | |
31 | #include <wrapper/vmalloc.h> /* for wrapper_vmalloc_sync_all() */ | |
32 | #include <wrapper/ringbuffer/frontend_types.h> | |
85522867 | 33 | #include <wrapper/ringbuffer/backend.h> |
8d43abb7 MD |
34 | #include <wrapper/rcu.h> |
35 | #include <lttng-events.h> | |
36 | #include <lttng-tracer-core.h> | |
40652b65 | 37 | |
40652b65 | 38 | /* |
6db3d13b | 39 | * Macro declarations used for all stages. |
40652b65 MD |
40 | */ |
41 | ||
76e4f017 MD |
42 | /* |
43 | * LTTng name mapping macros. LTTng remaps some of the kernel events to | |
44 | * enforce name-spacing. | |
45 | */ | |
3bc29f0a | 46 | #undef LTTNG_TRACEPOINT_EVENT_MAP |
f127e61e | 47 | #define LTTNG_TRACEPOINT_EVENT_MAP(name, map, proto, args, fields) \ |
3bc29f0a | 48 | LTTNG_TRACEPOINT_EVENT_CLASS(map, \ |
76e4f017 MD |
49 | PARAMS(proto), \ |
50 | PARAMS(args), \ | |
f127e61e | 51 | PARAMS(fields)) \ |
3bc29f0a | 52 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(map, name, map, PARAMS(proto), PARAMS(args)) |
76e4f017 | 53 | |
3bc29f0a | 54 | #undef LTTNG_TRACEPOINT_EVENT_MAP_NOARGS |
f127e61e | 55 | #define LTTNG_TRACEPOINT_EVENT_MAP_NOARGS(name, map, fields) \ |
3bc29f0a | 56 | LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(map, \ |
f127e61e | 57 | PARAMS(fields)) \ |
3bc29f0a | 58 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(map, name, map) |
76e4f017 | 59 | |
f127e61e | 60 | #undef LTTNG_TRACEPOINT_EVENT_CODE_MAP |
265822ae | 61 | #define LTTNG_TRACEPOINT_EVENT_CODE_MAP(name, map, proto, args, _locvar, _code_pre, fields, _code_post) \ |
f127e61e MD |
62 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE(map, \ |
63 | PARAMS(proto), \ | |
64 | PARAMS(args), \ | |
65 | PARAMS(_locvar), \ | |
265822ae MD |
66 | PARAMS(_code_pre), \ |
67 | PARAMS(fields), \ | |
68 | PARAMS(_code_post)) \ | |
f127e61e MD |
69 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(map, name, map, PARAMS(proto), PARAMS(args)) |
70 | ||
3bc29f0a | 71 | #undef LTTNG_TRACEPOINT_EVENT_CODE |
265822ae | 72 | #define LTTNG_TRACEPOINT_EVENT_CODE(name, proto, args, _locvar, _code_pre, fields, _code_post) \ |
f127e61e | 73 | LTTNG_TRACEPOINT_EVENT_CODE_MAP(name, name, \ |
7ca580f8 MD |
74 | PARAMS(proto), \ |
75 | PARAMS(args), \ | |
76 | PARAMS(_locvar), \ | |
265822ae MD |
77 | PARAMS(_code_pre), \ |
78 | PARAMS(fields), \ | |
79 | PARAMS(_code_post)) | |
fcf7fa33 | 80 | |
40652b65 | 81 | /* |
3bc29f0a MD |
82 | * LTTNG_TRACEPOINT_EVENT_CLASS can be used to add a generic function |
83 | * handlers for events. That is, if all events have the same parameters | |
84 | * and just have distinct trace points. Each tracepoint can be defined | |
85 | * with LTTNG_TRACEPOINT_EVENT_INSTANCE and that will map the | |
86 | * LTTNG_TRACEPOINT_EVENT_CLASS to the tracepoint. | |
40652b65 | 87 | * |
3bc29f0a MD |
88 | * LTTNG_TRACEPOINT_EVENT is a one to one mapping between tracepoint and |
89 | * template. | |
40652b65 | 90 | */ |
6db3d13b | 91 | |
3bc29f0a | 92 | #undef LTTNG_TRACEPOINT_EVENT |
f127e61e | 93 | #define LTTNG_TRACEPOINT_EVENT(name, proto, args, fields) \ |
3bc29f0a MD |
94 | LTTNG_TRACEPOINT_EVENT_MAP(name, name, \ |
95 | PARAMS(proto), \ | |
96 | PARAMS(args), \ | |
f127e61e | 97 | PARAMS(fields)) |
40652b65 | 98 | |
3bc29f0a | 99 | #undef LTTNG_TRACEPOINT_EVENT_NOARGS |
f127e61e MD |
100 | #define LTTNG_TRACEPOINT_EVENT_NOARGS(name, fields) \ |
101 | LTTNG_TRACEPOINT_EVENT_MAP_NOARGS(name, name, PARAMS(fields)) | |
76e4f017 | 102 | |
3bc29f0a MD |
103 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE |
104 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE(template, name, proto, args) \ | |
105 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(template, name, name, PARAMS(proto), PARAMS(args)) | |
76e4f017 | 106 | |
3bc29f0a MD |
107 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS |
108 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(template, name) \ | |
109 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(template, name, name) | |
76e4f017 | 110 | |
3bc29f0a | 111 | #undef LTTNG_TRACEPOINT_EVENT_CLASS |
f127e61e | 112 | #define LTTNG_TRACEPOINT_EVENT_CLASS(_name, _proto, _args, _fields) \ |
3bc29f0a | 113 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, PARAMS(_proto), PARAMS(_args), , , \ |
265822ae | 114 | PARAMS(_fields), ) |
7ca580f8 | 115 | |
3bc29f0a | 116 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS |
f127e61e | 117 | #define LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(_name, _fields) \ |
265822ae | 118 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, , , PARAMS(_fields), ) |
7ca580f8 MD |
119 | |
120 | ||
f62b389e | 121 | /* |
c099397a | 122 | * Stage 1 of the trace events. |
f62b389e MD |
123 | * |
124 | * Create dummy trace calls for each events, verifying that the LTTng module | |
3bc29f0a MD |
125 | * instrumentation headers match the kernel arguments. Will be optimized |
126 | * out by the compiler. | |
f62b389e MD |
127 | */ |
128 | ||
f127e61e | 129 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 | 130 | #include <probes/lttng-events-reset.h> |
f62b389e MD |
131 | |
132 | #undef TP_PROTO | |
f127e61e | 133 | #define TP_PROTO(...) __VA_ARGS__ |
f62b389e MD |
134 | |
135 | #undef TP_ARGS | |
f127e61e | 136 | #define TP_ARGS(...) __VA_ARGS__ |
f62b389e | 137 | |
3bc29f0a MD |
138 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP |
139 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
7eb827f2 | 140 | void trace_##_name(_proto); |
f62b389e | 141 | |
3bc29f0a MD |
142 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS |
143 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
cb1aa0c7 | 144 | void trace_##_name(void); |
f7bdf4db | 145 | |
f62b389e MD |
146 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
147 | ||
d0558de2 MD |
148 | /* |
149 | * Stage 1.1 of the trace events. | |
150 | * | |
151 | * Create dummy trace prototypes for each event class, and for each used | |
152 | * template. This will allow checking whether the prototypes from the | |
153 | * class and the instance using the class actually match. | |
154 | */ | |
155 | ||
ba012e22 | 156 | #include <probes/lttng-events-reset.h> /* Reset all macros within TRACE_EVENT */ |
d0558de2 MD |
157 | |
158 | #undef TP_PROTO | |
159 | #define TP_PROTO(...) __VA_ARGS__ | |
160 | ||
161 | #undef TP_ARGS | |
162 | #define TP_ARGS(...) __VA_ARGS__ | |
163 | ||
164 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
165 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
166 | void __event_template_proto___##_template(_proto); | |
167 | ||
168 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
169 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
170 | void __event_template_proto___##_template(void); | |
171 | ||
172 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE | |
265822ae | 173 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
d0558de2 MD |
174 | void __event_template_proto___##_name(_proto); |
175 | ||
176 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS | |
265822ae | 177 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
d0558de2 MD |
178 | void __event_template_proto___##_name(void); |
179 | ||
180 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
181 | ||
6db3d13b | 182 | /* |
c099397a | 183 | * Stage 2 of the trace events. |
6db3d13b MD |
184 | * |
185 | * Create event field type metadata section. | |
186 | * Each event produce an array of fields. | |
187 | */ | |
188 | ||
f127e61e | 189 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 MD |
190 | #include <probes/lttng-events-reset.h> |
191 | #include <probes/lttng-events-write.h> | |
192 | #include <probes/lttng-events-nowrite.h> | |
6db3d13b | 193 | |
f127e61e MD |
194 | #undef _ctf_integer_ext |
195 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ | |
c099397a MD |
196 | { \ |
197 | .name = #_item, \ | |
43803cf2 | 198 | .type = __type_integer(_type, 0, 0, -1, _byte_order, _base, none),\ |
f127e61e MD |
199 | .nowrite = _nowrite, \ |
200 | .user = _user, \ | |
c099397a | 201 | }, |
40652b65 | 202 | |
f127e61e MD |
203 | #undef _ctf_array_encoded |
204 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _user, _nowrite) \ | |
299338c8 | 205 | { \ |
c099397a MD |
206 | .name = #_item, \ |
207 | .type = \ | |
208 | { \ | |
299338c8 | 209 | .atype = atype_array, \ |
f127e61e | 210 | .u = \ |
c099397a | 211 | { \ |
f127e61e MD |
212 | .array = \ |
213 | { \ | |
43803cf2 | 214 | .elem_type = __type_integer(_type, 0, 0, 0, __BYTE_ORDER, 10, _encoding), \ |
f127e61e MD |
215 | .length = _length, \ |
216 | } \ | |
217 | } \ | |
299338c8 | 218 | }, \ |
f127e61e MD |
219 | .nowrite = _nowrite, \ |
220 | .user = _user, \ | |
299338c8 | 221 | }, |
40652b65 | 222 | |
43803cf2 MD |
223 | #undef _ctf_array_bitfield |
224 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
225 | { \ | |
226 | .name = #_item, \ | |
227 | .type = \ | |
228 | { \ | |
229 | .atype = atype_array, \ | |
230 | .u = \ | |
231 | { \ | |
232 | .array = \ | |
233 | { \ | |
234 | .elem_type = __type_integer(_type, 1, 1, 0, __LITTLE_ENDIAN, 10, none), \ | |
235 | .length = (_length) * sizeof(_type) * CHAR_BIT, \ | |
236 | .elem_alignment = lttng_alignof(_type), \ | |
237 | } \ | |
238 | } \ | |
239 | }, \ | |
240 | .nowrite = _nowrite, \ | |
241 | .user = _user, \ | |
242 | }, | |
243 | ||
244 | ||
f127e61e MD |
245 | #undef _ctf_sequence_encoded |
246 | #define _ctf_sequence_encoded(_type, _item, _src, \ | |
247 | _length_type, _src_length, _encoding, \ | |
57ede728 | 248 | _byte_order, _base, _user, _nowrite) \ |
299338c8 | 249 | { \ |
c099397a MD |
250 | .name = #_item, \ |
251 | .type = \ | |
252 | { \ | |
299338c8 | 253 | .atype = atype_sequence, \ |
f127e61e | 254 | .u = \ |
c099397a | 255 | { \ |
f127e61e MD |
256 | .sequence = \ |
257 | { \ | |
43803cf2 MD |
258 | .length_type = __type_integer(_length_type, 0, 0, 0, __BYTE_ORDER, 10, none), \ |
259 | .elem_type = __type_integer(_type, 0, 0, -1, _byte_order, _base, _encoding), \ | |
260 | }, \ | |
261 | }, \ | |
262 | }, \ | |
263 | .nowrite = _nowrite, \ | |
264 | .user = _user, \ | |
265 | }, | |
266 | ||
267 | #undef _ctf_sequence_bitfield | |
268 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
269 | _length_type, _src_length, \ | |
270 | _user, _nowrite) \ | |
271 | { \ | |
272 | .name = #_item, \ | |
273 | .type = \ | |
274 | { \ | |
275 | .atype = atype_sequence, \ | |
276 | .u = \ | |
277 | { \ | |
278 | .sequence = \ | |
279 | { \ | |
280 | .length_type = __type_integer(_length_type, 0, 0, 0, __BYTE_ORDER, 10, none), \ | |
281 | .elem_type = __type_integer(_type, 1, 1, 0, __LITTLE_ENDIAN, 10, none), \ | |
282 | .elem_alignment = lttng_alignof(_type), \ | |
f127e61e | 283 | }, \ |
c099397a | 284 | }, \ |
299338c8 | 285 | }, \ |
f127e61e MD |
286 | .nowrite = _nowrite, \ |
287 | .user = _user, \ | |
299338c8 | 288 | }, |
40652b65 | 289 | |
f127e61e MD |
290 | #undef _ctf_string |
291 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
299338c8 | 292 | { \ |
c099397a MD |
293 | .name = #_item, \ |
294 | .type = \ | |
295 | { \ | |
299338c8 | 296 | .atype = atype_string, \ |
f127e61e MD |
297 | .u = \ |
298 | { \ | |
299 | .basic = { .string = { .encoding = lttng_encode_UTF8 } } \ | |
300 | }, \ | |
299338c8 | 301 | }, \ |
f127e61e MD |
302 | .nowrite = _nowrite, \ |
303 | .user = _user, \ | |
299338c8 | 304 | }, |
1d12cebd | 305 | |
f127e61e MD |
306 | #undef TP_FIELDS |
307 | #define TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */ | |
1d12cebd | 308 | |
3bc29f0a | 309 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 310 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
0d1d4002 | 311 | static const struct lttng_event_field __event_fields___##_name[] = { \ |
f127e61e | 312 | _fields \ |
299338c8 MD |
313 | }; |
314 | ||
3bc29f0a | 315 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae MD |
316 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
317 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, PARAMS(_fields), _code_post) | |
f7bdf4db | 318 | |
299338c8 MD |
319 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
320 | ||
19c57fbf | 321 | /* |
c099397a | 322 | * Stage 3 of the trace events. |
19c57fbf MD |
323 | * |
324 | * Create probe callback prototypes. | |
325 | */ | |
326 | ||
f127e61e | 327 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 | 328 | #include <probes/lttng-events-reset.h> |
19c57fbf MD |
329 | |
330 | #undef TP_PROTO | |
f127e61e | 331 | #define TP_PROTO(...) __VA_ARGS__ |
19c57fbf | 332 | |
3bc29f0a | 333 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 334 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
19c57fbf MD |
335 | static void __event_probe__##_name(void *__data, _proto); |
336 | ||
3bc29f0a | 337 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 338 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f7bdf4db MD |
339 | static void __event_probe__##_name(void *__data); |
340 | ||
19c57fbf MD |
341 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
342 | ||
f7bdf4db MD |
343 | /* |
344 | * Stage 4 of the trace events. | |
345 | * | |
40652b65 MD |
346 | * Create static inline function that calculates event size. |
347 | */ | |
348 | ||
f127e61e | 349 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 MD |
350 | #include <probes/lttng-events-reset.h> |
351 | #include <probes/lttng-events-write.h> | |
6db3d13b | 352 | |
f127e61e MD |
353 | #undef _ctf_integer_ext |
354 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ | |
a90917c3 | 355 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
0d1d4002 | 356 | __event_len += sizeof(_type); |
6db3d13b | 357 | |
f127e61e MD |
358 | #undef _ctf_array_encoded |
359 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _user, _nowrite) \ | |
a90917c3 | 360 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
0d1d4002 | 361 | __event_len += sizeof(_type) * (_length); |
6db3d13b | 362 | |
43803cf2 MD |
363 | #undef _ctf_array_bitfield |
364 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
365 | _ctf_array_encoded(_type, _item, _src, _length, none, _user, _nowrite) | |
366 | ||
f127e61e MD |
367 | #undef _ctf_sequence_encoded |
368 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 369 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
370 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_length_type)); \ |
371 | __event_len += sizeof(_length_type); \ | |
a90917c3 | 372 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
f127e61e | 373 | __dynamic_len[__dynamic_len_idx] = (_src_length); \ |
41b59694 MD |
374 | __event_len += sizeof(_type) * __dynamic_len[__dynamic_len_idx]; \ |
375 | __dynamic_len_idx++; | |
6db3d13b | 376 | |
43803cf2 MD |
377 | #undef _ctf_sequence_bitfield |
378 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
379 | _length_type, _src_length, \ | |
380 | _user, _nowrite) \ | |
381 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
382 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
383 | ||
d0255731 | 384 | /* |
f127e61e | 385 | * ctf_user_string includes \0. If returns 0, it faulted, so we set size to |
786b8312 | 386 | * 1 (\0 only). |
d0255731 | 387 | */ |
f127e61e MD |
388 | #undef _ctf_string |
389 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
390 | if (_user) \ | |
391 | __event_len += __dynamic_len[__dynamic_len_idx++] = \ | |
96d0248a | 392 | max_t(size_t, lttng_strlen_user_inatomic(_src), 1); \ |
f127e61e MD |
393 | else \ |
394 | __event_len += __dynamic_len[__dynamic_len_idx++] = \ | |
96d0248a | 395 | strlen(_src) + 1; |
c6e3f225 | 396 | |
0d1d4002 | 397 | #undef TP_PROTO |
f127e61e | 398 | #define TP_PROTO(...) __VA_ARGS__ |
6db3d13b | 399 | |
f127e61e MD |
400 | #undef TP_FIELDS |
401 | #define TP_FIELDS(...) __VA_ARGS__ | |
6db3d13b | 402 | |
7ca580f8 MD |
403 | #undef TP_locvar |
404 | #define TP_locvar(...) __VA_ARGS__ | |
405 | ||
3bc29f0a | 406 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 407 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
7ca580f8 MD |
408 | static inline size_t __event_get_size__##_name(size_t *__dynamic_len, \ |
409 | void *__tp_locvar, _proto) \ | |
0d1d4002 MD |
410 | { \ |
411 | size_t __event_len = 0; \ | |
d3de7f14 | 412 | unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \ |
7ca580f8 | 413 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
d3de7f14 | 414 | \ |
f127e61e | 415 | _fields \ |
d3de7f14 MD |
416 | return __event_len; \ |
417 | } | |
418 | ||
3bc29f0a | 419 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 420 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
7ca580f8 MD |
421 | static inline size_t __event_get_size__##_name(size_t *__dynamic_len, \ |
422 | void *__tp_locvar) \ | |
d3de7f14 MD |
423 | { \ |
424 | size_t __event_len = 0; \ | |
425 | unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \ | |
7ca580f8 | 426 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
0d1d4002 | 427 | \ |
f127e61e | 428 | _fields \ |
0d1d4002 | 429 | return __event_len; \ |
6db3d13b | 430 | } |
40652b65 MD |
431 | |
432 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
433 | ||
f127e61e | 434 | |
40652b65 | 435 | /* |
f127e61e | 436 | * Stage 4.1 of tracepoint event generation. |
e763dbf5 | 437 | * |
f127e61e MD |
438 | * Create static inline function that layout the filter stack data. |
439 | * We make both write and nowrite data available to the filter. | |
e763dbf5 MD |
440 | */ |
441 | ||
f127e61e | 442 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 MD |
443 | #include <probes/lttng-events-reset.h> |
444 | #include <probes/lttng-events-write.h> | |
445 | #include <probes/lttng-events-nowrite.h> | |
f127e61e MD |
446 | |
447 | #undef _ctf_integer_ext_fetched | |
448 | #define _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
449 | if (lttng_is_signed_type(_type)) { \ | |
450 | int64_t __ctf_tmp_int64; \ | |
451 | switch (sizeof(_type)) { \ | |
452 | case 1: \ | |
453 | { \ | |
454 | union { _type t; int8_t v; } __tmp = { (_type) (_src) }; \ | |
455 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ | |
456 | break; \ | |
457 | } \ | |
458 | case 2: \ | |
459 | { \ | |
460 | union { _type t; int16_t v; } __tmp = { (_type) (_src) }; \ | |
814f7d25 MD |
461 | if (_byte_order != __BYTE_ORDER) \ |
462 | __swab16s(&__tmp.v); \ | |
f127e61e MD |
463 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
464 | break; \ | |
465 | } \ | |
466 | case 4: \ | |
467 | { \ | |
468 | union { _type t; int32_t v; } __tmp = { (_type) (_src) }; \ | |
814f7d25 MD |
469 | if (_byte_order != __BYTE_ORDER) \ |
470 | __swab32s(&__tmp.v); \ | |
f127e61e MD |
471 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
472 | break; \ | |
473 | } \ | |
474 | case 8: \ | |
475 | { \ | |
476 | union { _type t; int64_t v; } __tmp = { (_type) (_src) }; \ | |
814f7d25 MD |
477 | if (_byte_order != __BYTE_ORDER) \ |
478 | __swab64s(&__tmp.v); \ | |
f127e61e MD |
479 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
480 | break; \ | |
481 | } \ | |
482 | default: \ | |
483 | BUG_ON(1); \ | |
484 | }; \ | |
485 | memcpy(__stack_data, &__ctf_tmp_int64, sizeof(int64_t)); \ | |
486 | } else { \ | |
487 | uint64_t __ctf_tmp_uint64; \ | |
488 | switch (sizeof(_type)) { \ | |
489 | case 1: \ | |
490 | { \ | |
491 | union { _type t; uint8_t v; } __tmp = { (_type) (_src) }; \ | |
492 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ | |
493 | break; \ | |
494 | } \ | |
495 | case 2: \ | |
496 | { \ | |
497 | union { _type t; uint16_t v; } __tmp = { (_type) (_src) }; \ | |
814f7d25 MD |
498 | if (_byte_order != __BYTE_ORDER) \ |
499 | __swab16s(&__tmp.v); \ | |
f127e61e MD |
500 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
501 | break; \ | |
502 | } \ | |
503 | case 4: \ | |
504 | { \ | |
505 | union { _type t; uint32_t v; } __tmp = { (_type) (_src) }; \ | |
814f7d25 MD |
506 | if (_byte_order != __BYTE_ORDER) \ |
507 | __swab32s(&__tmp.v); \ | |
f127e61e MD |
508 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
509 | break; \ | |
510 | } \ | |
511 | case 8: \ | |
512 | { \ | |
513 | union { _type t; uint64_t v; } __tmp = { (_type) (_src) }; \ | |
814f7d25 MD |
514 | if (_byte_order != __BYTE_ORDER) \ |
515 | __swab64s(&__tmp.v); \ | |
f127e61e MD |
516 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
517 | break; \ | |
518 | } \ | |
519 | default: \ | |
520 | BUG_ON(1); \ | |
521 | }; \ | |
522 | memcpy(__stack_data, &__ctf_tmp_uint64, sizeof(uint64_t)); \ | |
523 | } \ | |
524 | __stack_data += sizeof(int64_t); | |
525 | ||
526 | #undef _ctf_integer_ext_isuser0 | |
527 | #define _ctf_integer_ext_isuser0(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
528 | _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) | |
529 | ||
530 | #undef _ctf_integer_ext_isuser1 | |
531 | #define _ctf_integer_ext_isuser1(_type, _item, _user_src, _byte_order, _base, _nowrite) \ | |
85522867 MD |
532 | { \ |
533 | union { \ | |
534 | char __array[sizeof(_user_src)]; \ | |
535 | __typeof__(_user_src) __v; \ | |
536 | } __tmp_fetch; \ | |
537 | if (lib_ring_buffer_copy_from_user_check_nofault(__tmp_fetch.__array, \ | |
538 | &(_user_src), sizeof(_user_src))) \ | |
539 | memset(__tmp_fetch.__array, 0, sizeof(__tmp_fetch.__array)); \ | |
540 | _ctf_integer_ext_fetched(_type, _item, __tmp_fetch.__v, _byte_order, _base, _nowrite) \ | |
f127e61e | 541 | } |
e763dbf5 | 542 | |
f127e61e MD |
543 | #undef _ctf_integer_ext |
544 | #define _ctf_integer_ext(_type, _item, _user_src, _byte_order, _base, _user, _nowrite) \ | |
545 | _ctf_integer_ext_isuser##_user(_type, _item, _user_src, _byte_order, _base, _nowrite) | |
546 | ||
547 | #undef _ctf_array_encoded | |
548 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _user, _nowrite) \ | |
549 | { \ | |
550 | unsigned long __ctf_tmp_ulong = (unsigned long) (_length); \ | |
551 | const void *__ctf_tmp_ptr = (_src); \ | |
552 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ | |
553 | __stack_data += sizeof(unsigned long); \ | |
6b272cda MD |
554 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
555 | __stack_data += sizeof(void *); \ | |
f127e61e MD |
556 | } |
557 | ||
43803cf2 MD |
558 | #undef _ctf_array_bitfield |
559 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
560 | _ctf_array_encoded(_type, _item, _src, _length, none, _user, _nowrite) | |
561 | ||
f127e61e MD |
562 | #undef _ctf_sequence_encoded |
563 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 564 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
565 | { \ |
566 | unsigned long __ctf_tmp_ulong = (unsigned long) (_src_length); \ | |
567 | const void *__ctf_tmp_ptr = (_src); \ | |
568 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ | |
569 | __stack_data += sizeof(unsigned long); \ | |
6b272cda MD |
570 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
571 | __stack_data += sizeof(void *); \ | |
f127e61e MD |
572 | } |
573 | ||
43803cf2 MD |
574 | #undef _ctf_sequence_bitfield |
575 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
576 | _length_type, _src_length, \ | |
577 | _user, _nowrite) \ | |
578 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
579 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
580 | ||
f127e61e MD |
581 | #undef _ctf_string |
582 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
583 | { \ | |
584 | const void *__ctf_tmp_ptr = (_src); \ | |
6b272cda MD |
585 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
586 | __stack_data += sizeof(void *); \ | |
f127e61e | 587 | } |
c6e3f225 | 588 | |
e763dbf5 | 589 | #undef TP_PROTO |
f127e61e | 590 | #define TP_PROTO(...) __VA_ARGS__ |
e763dbf5 | 591 | |
f127e61e MD |
592 | #undef TP_FIELDS |
593 | #define TP_FIELDS(...) __VA_ARGS__ | |
e763dbf5 | 594 | |
7ca580f8 MD |
595 | #undef TP_locvar |
596 | #define TP_locvar(...) __VA_ARGS__ | |
597 | ||
f127e61e | 598 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 599 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
600 | static inline \ |
601 | void __event_prepare_filter_stack__##_name(char *__stack_data, \ | |
602 | void *__tp_locvar) \ | |
e763dbf5 | 603 | { \ |
7ca580f8 MD |
604 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
605 | \ | |
f127e61e | 606 | _fields \ |
e763dbf5 MD |
607 | } |
608 | ||
f127e61e | 609 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 610 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
611 | static inline \ |
612 | void __event_prepare_filter_stack__##_name(char *__stack_data, \ | |
613 | void *__tp_locvar, _proto) \ | |
d3de7f14 | 614 | { \ |
7ca580f8 MD |
615 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
616 | \ | |
f127e61e | 617 | _fields \ |
d3de7f14 MD |
618 | } |
619 | ||
e763dbf5 MD |
620 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
621 | ||
e763dbf5 | 622 | /* |
f127e61e | 623 | * Stage 5 of the trace events. |
40652b65 | 624 | * |
f127e61e | 625 | * Create static inline function that calculates event payload alignment. |
3c4ffab9 MD |
626 | */ |
627 | ||
f127e61e | 628 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 MD |
629 | #include <probes/lttng-events-reset.h> |
630 | #include <probes/lttng-events-write.h> | |
3c4ffab9 | 631 | |
f127e61e MD |
632 | #undef _ctf_integer_ext |
633 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ | |
634 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
3c4ffab9 | 635 | |
f127e61e MD |
636 | #undef _ctf_array_encoded |
637 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _user, _nowrite) \ | |
638 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
3c4ffab9 | 639 | |
43803cf2 MD |
640 | #undef _ctf_array_bitfield |
641 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
642 | _ctf_array_encoded(_type, _item, _src, _length, none, _user, _nowrite) | |
643 | ||
f127e61e MD |
644 | #undef _ctf_sequence_encoded |
645 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 646 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
647 | __event_align = max_t(size_t, __event_align, lttng_alignof(_length_type)); \ |
648 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
64c796d8 | 649 | |
43803cf2 MD |
650 | #undef _ctf_sequence_bitfield |
651 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
652 | _length_type, _src_length, \ | |
653 | _user, _nowrite) \ | |
654 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
655 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
656 | ||
f127e61e MD |
657 | #undef _ctf_string |
658 | #define _ctf_string(_item, _src, _user, _nowrite) | |
64c796d8 | 659 | |
f127e61e MD |
660 | #undef TP_PROTO |
661 | #define TP_PROTO(...) __VA_ARGS__ | |
84da5206 | 662 | |
f127e61e MD |
663 | #undef TP_FIELDS |
664 | #define TP_FIELDS(...) __VA_ARGS__ | |
c6e3f225 | 665 | |
f127e61e MD |
666 | #undef TP_locvar |
667 | #define TP_locvar(...) __VA_ARGS__ | |
3c4ffab9 | 668 | |
f127e61e | 669 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 670 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
671 | static inline size_t __event_get_align__##_name(void *__tp_locvar, _proto) \ |
672 | { \ | |
673 | size_t __event_align = 1; \ | |
674 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ | |
675 | \ | |
676 | _fields \ | |
677 | return __event_align; \ | |
678 | } | |
3c4ffab9 | 679 | |
3bc29f0a | 680 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 681 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
682 | static inline size_t __event_get_align__##_name(void *__tp_locvar) \ |
683 | { \ | |
684 | size_t __event_align = 1; \ | |
685 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ | |
686 | \ | |
687 | _fields \ | |
688 | return __event_align; \ | |
689 | } | |
d3de7f14 | 690 | |
3c4ffab9 MD |
691 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
692 | ||
3c4ffab9 | 693 | /* |
f127e61e | 694 | * Stage 6 of tracepoint event generation. |
e763dbf5 | 695 | * |
f127e61e MD |
696 | * Create the probe function. This function calls event size calculation |
697 | * and writes event data into the buffer. | |
40652b65 MD |
698 | */ |
699 | ||
f127e61e | 700 | /* Reset all macros within TRACEPOINT_EVENT */ |
ba012e22 MD |
701 | #include <probes/lttng-events-reset.h> |
702 | #include <probes/lttng-events-write.h> | |
c6e3f225 | 703 | |
f127e61e MD |
704 | #undef _ctf_integer_ext_fetched |
705 | #define _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
e763dbf5 | 706 | { \ |
f127e61e MD |
707 | _type __tmp = _src; \ |
708 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\ | |
aaa4004a | 709 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ |
f127e61e MD |
710 | } |
711 | ||
712 | #undef _ctf_integer_ext_isuser0 | |
713 | #define _ctf_integer_ext_isuser0(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
714 | _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) | |
715 | ||
716 | #undef _ctf_integer_ext_isuser1 | |
717 | #define _ctf_integer_ext_isuser1(_type, _item, _user_src, _byte_order, _base, _nowrite) \ | |
718 | { \ | |
85522867 MD |
719 | union { \ |
720 | char __array[sizeof(_user_src)]; \ | |
721 | __typeof__(_user_src) __v; \ | |
722 | } __tmp_fetch; \ | |
723 | if (lib_ring_buffer_copy_from_user_check_nofault(__tmp_fetch.__array, \ | |
724 | &(_user_src), sizeof(_user_src))) \ | |
725 | memset(__tmp_fetch.__array, 0, sizeof(__tmp_fetch.__array)); \ | |
726 | _ctf_integer_ext_fetched(_type, _item, __tmp_fetch.__v, _byte_order, _base, _nowrite) \ | |
f127e61e MD |
727 | } |
728 | ||
729 | #undef _ctf_integer_ext | |
730 | #define _ctf_integer_ext(_type, _item, _user_src, _byte_order, _base, _user, _nowrite) \ | |
731 | _ctf_integer_ext_isuser##_user(_type, _item, _user_src, _byte_order, _base, _nowrite) | |
732 | ||
733 | #undef _ctf_array_encoded | |
734 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _user, _nowrite) \ | |
735 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
736 | if (_user) { \ | |
737 | __chan->ops->event_write_from_user(&__ctx, _src, sizeof(_type) * (_length)); \ | |
738 | } else { \ | |
739 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); \ | |
740 | } | |
741 | ||
43803cf2 MD |
742 | #if (__BYTE_ORDER == __LITTLE_ENDIAN) |
743 | #undef _ctf_array_bitfield | |
744 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
745 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
746 | if (_user) { \ | |
747 | __chan->ops->event_write_from_user(&__ctx, _src, sizeof(_type) * (_length)); \ | |
748 | } else { \ | |
749 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); \ | |
750 | } | |
751 | #else /* #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
752 | /* | |
753 | * For big endian, we need to byteswap into little endian. | |
754 | */ | |
755 | #undef _ctf_array_bitfield | |
756 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
757 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
758 | { \ | |
759 | size_t _i; \ | |
760 | \ | |
761 | for (_i = 0; _i < (_length); _i++) { \ | |
762 | _type _tmp; \ | |
763 | \ | |
764 | if (_user) { \ | |
765 | if (get_user(_tmp, (_type *) _src + _i)) \ | |
766 | _tmp = 0; \ | |
767 | } else { \ | |
768 | _tmp = ((_type *) _src)[_i]; \ | |
769 | } \ | |
770 | switch (sizeof(_type)) { \ | |
771 | case 1: \ | |
772 | break; \ | |
773 | case 2: \ | |
774 | _tmp = cpu_to_le16(_tmp); \ | |
775 | break; \ | |
776 | case 4: \ | |
777 | _tmp = cpu_to_le32(_tmp); \ | |
778 | break; \ | |
779 | case 8: \ | |
780 | _tmp = cpu_to_le64(_tmp); \ | |
781 | break; \ | |
782 | default: \ | |
783 | BUG_ON(1); \ | |
784 | } \ | |
785 | __chan->ops->event_write(&__ctx, &_tmp, sizeof(_type)); \ | |
786 | } \ | |
787 | } | |
788 | #endif /* #else #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
789 | ||
f127e61e MD |
790 | #undef _ctf_sequence_encoded |
791 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 792 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
84da5206 | 793 | { \ |
f127e61e MD |
794 | _length_type __tmpl = __stackvar.__dynamic_len[__dynamic_len_idx]; \ |
795 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ | |
796 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
84da5206 | 797 | } \ |
f127e61e MD |
798 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ |
799 | if (_user) { \ | |
800 | __chan->ops->event_write_from_user(&__ctx, _src, \ | |
801 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
802 | } else { \ | |
803 | __chan->ops->event_write(&__ctx, _src, \ | |
804 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
805 | } | |
806 | ||
43803cf2 MD |
807 | #if (__BYTE_ORDER == __LITTLE_ENDIAN) |
808 | #undef _ctf_sequence_bitfield | |
809 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
810 | _length_type, _src_length, \ | |
811 | _user, _nowrite) \ | |
812 | { \ | |
813 | _length_type __tmpl = __stackvar.__dynamic_len[__dynamic_len_idx] * sizeof(_type) * CHAR_BIT; \ | |
814 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ | |
815 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
816 | } \ | |
817 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
818 | if (_user) { \ | |
819 | __chan->ops->event_write_from_user(&__ctx, _src, \ | |
820 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
821 | } else { \ | |
822 | __chan->ops->event_write(&__ctx, _src, \ | |
823 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
824 | } | |
825 | #else /* #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
826 | /* | |
827 | * For big endian, we need to byteswap into little endian. | |
828 | */ | |
829 | #undef _ctf_sequence_bitfield | |
830 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
831 | _length_type, _src_length, \ | |
832 | _user, _nowrite) \ | |
833 | { \ | |
834 | _length_type __tmpl = __stackvar.__dynamic_len[__dynamic_len_idx] * sizeof(_type) * CHAR_BIT; \ | |
835 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ | |
836 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
837 | } \ | |
838 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
839 | { \ | |
840 | size_t _i, _length; \ | |
841 | \ | |
842 | _length = __get_dynamic_len(dest); \ | |
843 | for (_i = 0; _i < _length; _i++) { \ | |
844 | _type _tmp; \ | |
845 | \ | |
846 | if (_user) { \ | |
847 | if (get_user(_tmp, (_type *) _src + _i)) \ | |
848 | _tmp = 0; \ | |
849 | } else { \ | |
850 | _tmp = ((_type *) _src)[_i]; \ | |
851 | } \ | |
852 | switch (sizeof(_type)) { \ | |
853 | case 1: \ | |
854 | break; \ | |
855 | case 2: \ | |
856 | _tmp = cpu_to_le16(_tmp); \ | |
857 | break; \ | |
858 | case 4: \ | |
859 | _tmp = cpu_to_le32(_tmp); \ | |
860 | break; \ | |
861 | case 8: \ | |
862 | _tmp = cpu_to_le64(_tmp); \ | |
863 | break; \ | |
864 | default: \ | |
865 | BUG_ON(1); \ | |
866 | } \ | |
867 | __chan->ops->event_write(&__ctx, &_tmp, sizeof(_type)); \ | |
868 | } \ | |
869 | } | |
870 | #endif /* #else #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
871 | ||
f127e61e MD |
872 | #undef _ctf_string |
873 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
874 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(*(_src))); \ | |
875 | if (_user) { \ | |
876 | __chan->ops->event_strcpy_from_user(&__ctx, _src, \ | |
877 | __get_dynamic_len(dest)); \ | |
878 | } else { \ | |
879 | __chan->ops->event_strcpy(&__ctx, _src, \ | |
880 | __get_dynamic_len(dest)); \ | |
881 | } | |
e763dbf5 MD |
882 | |
883 | /* Beware: this get len actually consumes the len value */ | |
f127e61e MD |
884 | #undef __get_dynamic_len |
885 | #define __get_dynamic_len(field) __stackvar.__dynamic_len[__dynamic_len_idx++] | |
e763dbf5 MD |
886 | |
887 | #undef TP_PROTO | |
f127e61e | 888 | #define TP_PROTO(...) __VA_ARGS__ |
e763dbf5 MD |
889 | |
890 | #undef TP_ARGS | |
f127e61e | 891 | #define TP_ARGS(...) __VA_ARGS__ |
e763dbf5 | 892 | |
f127e61e MD |
893 | #undef TP_FIELDS |
894 | #define TP_FIELDS(...) __VA_ARGS__ | |
e763dbf5 | 895 | |
7ca580f8 MD |
896 | #undef TP_locvar |
897 | #define TP_locvar(...) __VA_ARGS__ | |
898 | ||
265822ae MD |
899 | #undef TP_code_pre |
900 | #define TP_code_pre(...) __VA_ARGS__ | |
901 | ||
902 | #undef TP_code_post | |
903 | #define TP_code_post(...) __VA_ARGS__ | |
7ca580f8 | 904 | |
c337ddc2 MD |
905 | /* |
906 | * For state dump, check that "session" argument (mandatory) matches the | |
907 | * session this event belongs to. Ensures that we write state dump data only | |
908 | * into the started session, not into all sessions. | |
909 | */ | |
910 | #ifdef TP_SESSION_CHECK | |
911 | #define _TP_SESSION_CHECK(session, csession) (session == csession) | |
912 | #else /* TP_SESSION_CHECK */ | |
913 | #define _TP_SESSION_CHECK(session, csession) 1 | |
914 | #endif /* TP_SESSION_CHECK */ | |
915 | ||
f9771d39 | 916 | /* |
f127e61e MD |
917 | * Using twice size for filter stack data to hold size and pointer for |
918 | * each field (worse case). For integers, max size required is 64-bit. | |
919 | * Same for double-precision floats. Those fit within | |
920 | * 2*sizeof(unsigned long) for all supported architectures. | |
921 | * Perform UNION (||) of filter runtime list. | |
f9771d39 | 922 | */ |
3bc29f0a | 923 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 924 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
e763dbf5 MD |
925 | static void __event_probe__##_name(void *__data, _proto) \ |
926 | { \ | |
7ca580f8 | 927 | struct probe_local_vars { _locvar }; \ |
a90917c3 | 928 | struct lttng_event *__event = __data; \ |
79150a49 JD |
929 | struct lttng_probe_ctx __lttng_probe_ctx = { \ |
930 | .event = __event, \ | |
ccecf3fb | 931 | .interruptible = !irqs_disabled(), \ |
79150a49 | 932 | }; \ |
a90917c3 | 933 | struct lttng_channel *__chan = __event->chan; \ |
e0130fab | 934 | struct lttng_session *__session = __chan->session; \ |
aaa4004a | 935 | struct lib_ring_buffer_ctx __ctx; \ |
e763dbf5 | 936 | size_t __event_len, __event_align; \ |
d3de7f14 | 937 | size_t __dynamic_len_idx __attribute__((unused)) = 0; \ |
f127e61e MD |
938 | union { \ |
939 | size_t __dynamic_len[ARRAY_SIZE(__event_fields___##_name)]; \ | |
940 | char __filter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \ | |
941 | } __stackvar; \ | |
e763dbf5 | 942 | int __ret; \ |
7ca580f8 MD |
943 | struct probe_local_vars __tp_locvar; \ |
944 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
945 | &__tp_locvar; \ | |
e0130fab | 946 | struct lttng_pid_tracker *__lpf; \ |
e763dbf5 | 947 | \ |
e0130fab | 948 | if (!_TP_SESSION_CHECK(session, __session)) \ |
c337ddc2 | 949 | return; \ |
e0130fab | 950 | if (unlikely(!ACCESS_ONCE(__session->active))) \ |
e64957da MD |
951 | return; \ |
952 | if (unlikely(!ACCESS_ONCE(__chan->enabled))) \ | |
953 | return; \ | |
954 | if (unlikely(!ACCESS_ONCE(__event->enabled))) \ | |
52fc2e1f | 955 | return; \ |
7a09dcb7 | 956 | __lpf = lttng_rcu_dereference(__session->pid_tracker); \ |
e0130fab MD |
957 | if (__lpf && likely(!lttng_pid_tracker_lookup(__lpf, current->pid))) \ |
958 | return; \ | |
265822ae | 959 | _code_pre \ |
f127e61e MD |
960 | if (unlikely(!list_empty(&__event->bytecode_runtime_head))) { \ |
961 | struct lttng_bytecode_runtime *bc_runtime; \ | |
962 | int __filter_record = __event->has_enablers_without_bytecode; \ | |
963 | \ | |
964 | __event_prepare_filter_stack__##_name(__stackvar.__filter_stack_data, \ | |
965 | tp_locvar, _args); \ | |
7a09dcb7 | 966 | lttng_list_for_each_entry_rcu(bc_runtime, &__event->bytecode_runtime_head, node) { \ |
79150a49 | 967 | if (unlikely(bc_runtime->filter(bc_runtime, &__lttng_probe_ctx, \ |
f127e61e MD |
968 | __stackvar.__filter_stack_data) & LTTNG_FILTER_RECORD_FLAG)) \ |
969 | __filter_record = 1; \ | |
970 | } \ | |
971 | if (likely(!__filter_record)) \ | |
265822ae | 972 | goto __post; \ |
f127e61e MD |
973 | } \ |
974 | __event_len = __event_get_size__##_name(__stackvar.__dynamic_len, \ | |
975 | tp_locvar, _args); \ | |
7ca580f8 | 976 | __event_align = __event_get_align__##_name(tp_locvar, _args); \ |
79150a49 | 977 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, &__lttng_probe_ctx, __event_len, \ |
e763dbf5 | 978 | __event_align, -1); \ |
aaa4004a | 979 | __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ |
e763dbf5 | 980 | if (__ret < 0) \ |
265822ae | 981 | goto __post; \ |
f127e61e | 982 | _fields \ |
aaa4004a | 983 | __chan->ops->event_commit(&__ctx); \ |
265822ae MD |
984 | __post: \ |
985 | _code_post \ | |
986 | return; \ | |
e763dbf5 MD |
987 | } |
988 | ||
3bc29f0a | 989 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 990 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f7bdf4db MD |
991 | static void __event_probe__##_name(void *__data) \ |
992 | { \ | |
7ca580f8 | 993 | struct probe_local_vars { _locvar }; \ |
a90917c3 | 994 | struct lttng_event *__event = __data; \ |
79150a49 JD |
995 | struct lttng_probe_ctx __lttng_probe_ctx = { \ |
996 | .event = __event, \ | |
ccecf3fb | 997 | .interruptible = !irqs_disabled(), \ |
79150a49 | 998 | }; \ |
a90917c3 | 999 | struct lttng_channel *__chan = __event->chan; \ |
e0130fab | 1000 | struct lttng_session *__session = __chan->session; \ |
f7bdf4db MD |
1001 | struct lib_ring_buffer_ctx __ctx; \ |
1002 | size_t __event_len, __event_align; \ | |
d3de7f14 | 1003 | size_t __dynamic_len_idx __attribute__((unused)) = 0; \ |
f127e61e MD |
1004 | union { \ |
1005 | size_t __dynamic_len[ARRAY_SIZE(__event_fields___##_name)]; \ | |
1006 | char __filter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \ | |
1007 | } __stackvar; \ | |
f7bdf4db | 1008 | int __ret; \ |
7ca580f8 MD |
1009 | struct probe_local_vars __tp_locvar; \ |
1010 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
1011 | &__tp_locvar; \ | |
e0130fab | 1012 | struct lttng_pid_tracker *__lpf; \ |
f7bdf4db | 1013 | \ |
e0130fab | 1014 | if (!_TP_SESSION_CHECK(session, __session)) \ |
c337ddc2 | 1015 | return; \ |
e0130fab | 1016 | if (unlikely(!ACCESS_ONCE(__session->active))) \ |
f7bdf4db MD |
1017 | return; \ |
1018 | if (unlikely(!ACCESS_ONCE(__chan->enabled))) \ | |
1019 | return; \ | |
1020 | if (unlikely(!ACCESS_ONCE(__event->enabled))) \ | |
1021 | return; \ | |
7a09dcb7 | 1022 | __lpf = lttng_rcu_dereference(__session->pid_tracker); \ |
e0130fab MD |
1023 | if (__lpf && likely(!lttng_pid_tracker_lookup(__lpf, current->pid))) \ |
1024 | return; \ | |
265822ae | 1025 | _code_pre \ |
f127e61e MD |
1026 | if (unlikely(!list_empty(&__event->bytecode_runtime_head))) { \ |
1027 | struct lttng_bytecode_runtime *bc_runtime; \ | |
1028 | int __filter_record = __event->has_enablers_without_bytecode; \ | |
1029 | \ | |
1030 | __event_prepare_filter_stack__##_name(__stackvar.__filter_stack_data, \ | |
1031 | tp_locvar); \ | |
7a09dcb7 | 1032 | lttng_list_for_each_entry_rcu(bc_runtime, &__event->bytecode_runtime_head, node) { \ |
79150a49 | 1033 | if (unlikely(bc_runtime->filter(bc_runtime, &__lttng_probe_ctx, \ |
f127e61e MD |
1034 | __stackvar.__filter_stack_data) & LTTNG_FILTER_RECORD_FLAG)) \ |
1035 | __filter_record = 1; \ | |
1036 | } \ | |
1037 | if (likely(!__filter_record)) \ | |
265822ae | 1038 | goto __post; \ |
f127e61e MD |
1039 | } \ |
1040 | __event_len = __event_get_size__##_name(__stackvar.__dynamic_len, tp_locvar); \ | |
7ca580f8 | 1041 | __event_align = __event_get_align__##_name(tp_locvar); \ |
79150a49 | 1042 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, &__lttng_probe_ctx, __event_len, \ |
f7bdf4db MD |
1043 | __event_align, -1); \ |
1044 | __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ | |
1045 | if (__ret < 0) \ | |
265822ae | 1046 | goto __post; \ |
f127e61e | 1047 | _fields \ |
f7bdf4db | 1048 | __chan->ops->event_commit(&__ctx); \ |
265822ae MD |
1049 | __post: \ |
1050 | _code_post \ | |
1051 | return; \ | |
f7bdf4db MD |
1052 | } |
1053 | ||
e763dbf5 MD |
1054 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
1055 | ||
f127e61e MD |
1056 | #undef __get_dynamic_len |
1057 | ||
1058 | /* | |
1059 | * Stage 7 of the trace events. | |
1060 | * | |
1061 | * Create event descriptions. | |
1062 | */ | |
1063 | ||
1064 | /* Named field types must be defined in lttng-types.h */ | |
1065 | ||
ba012e22 | 1066 | #include <probes/lttng-events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
f127e61e MD |
1067 | |
1068 | #ifndef TP_PROBE_CB | |
1069 | #define TP_PROBE_CB(_template) &__event_probe__##_template | |
1070 | #endif | |
1071 | ||
1072 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
1073 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
1074 | static const struct lttng_event_desc __event_desc___##_map = { \ | |
1075 | .fields = __event_fields___##_template, \ | |
1076 | .name = #_map, \ | |
1077 | .kname = #_name, \ | |
1078 | .probe_callback = (void *) TP_PROBE_CB(_template), \ | |
1079 | .nr_fields = ARRAY_SIZE(__event_fields___##_template), \ | |
1080 | .owner = THIS_MODULE, \ | |
1081 | }; | |
1082 | ||
1083 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
1084 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
1085 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) | |
1086 | ||
1087 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
1088 | ||
1089 | /* | |
1090 | * Stage 8 of the trace events. | |
1091 | * | |
1092 | * Create an array of event description pointers. | |
1093 | */ | |
1094 | ||
ba012e22 | 1095 | #include <probes/lttng-events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
f127e61e MD |
1096 | |
1097 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
1098 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
1099 | &__event_desc___##_map, | |
1100 | ||
1101 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
1102 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
1103 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) | |
1104 | ||
1105 | #define TP_ID1(_token, _system) _token##_system | |
1106 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1107 | ||
1108 | static const struct lttng_event_desc *TP_ID(__event_desc___, TRACE_SYSTEM)[] = { | |
1109 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
1110 | }; | |
1111 | ||
1112 | #undef TP_ID1 | |
1113 | #undef TP_ID | |
1114 | ||
1115 | /* | |
1116 | * Stage 9 of the trace events. | |
1117 | * | |
1118 | * Create a toplevel descriptor for the whole probe. | |
1119 | */ | |
1120 | ||
1121 | #define TP_ID1(_token, _system) _token##_system | |
1122 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1123 | ||
1124 | /* non-const because list head will be modified when registered. */ | |
1125 | static __used struct lttng_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = { | |
1126 | .provider = __stringify(TRACE_SYSTEM), | |
1127 | .event_desc = TP_ID(__event_desc___, TRACE_SYSTEM), | |
1128 | .nr_events = ARRAY_SIZE(TP_ID(__event_desc___, TRACE_SYSTEM)), | |
1129 | .head = { NULL, NULL }, | |
1130 | .lazy_init_head = { NULL, NULL }, | |
1131 | .lazy = 0, | |
1132 | }; | |
1133 | ||
1134 | #undef TP_ID1 | |
1135 | #undef TP_ID | |
1136 | ||
3afe7aac | 1137 | /* |
c099397a | 1138 | * Stage 10 of the trace events. |
3afe7aac MD |
1139 | * |
1140 | * Register/unregister probes at module load/unload. | |
1141 | */ | |
1142 | ||
ba012e22 | 1143 | #include <probes/lttng-events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
3afe7aac MD |
1144 | |
1145 | #define TP_ID1(_token, _system) _token##_system | |
1146 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1147 | #define module_init_eval1(_token, _system) module_init(_token##_system) | |
1148 | #define module_init_eval(_token, _system) module_init_eval1(_token, _system) | |
1149 | #define module_exit_eval1(_token, _system) module_exit(_token##_system) | |
1150 | #define module_exit_eval(_token, _system) module_exit_eval1(_token, _system) | |
1151 | ||
2655f9ad | 1152 | #ifndef TP_MODULE_NOINIT |
3afe7aac MD |
1153 | static int TP_ID(__lttng_events_init__, TRACE_SYSTEM)(void) |
1154 | { | |
6d2a620c | 1155 | wrapper_vmalloc_sync_all(); |
a90917c3 | 1156 | return lttng_probe_register(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
1157 | } |
1158 | ||
3afe7aac MD |
1159 | static void TP_ID(__lttng_events_exit__, TRACE_SYSTEM)(void) |
1160 | { | |
a90917c3 | 1161 | lttng_probe_unregister(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
1162 | } |
1163 | ||
2655f9ad MD |
1164 | #ifndef TP_MODULE_NOAUTOLOAD |
1165 | module_init_eval(__lttng_events_init__, TRACE_SYSTEM); | |
3afe7aac | 1166 | module_exit_eval(__lttng_events_exit__, TRACE_SYSTEM); |
259b6cb3 | 1167 | #endif |
3afe7aac | 1168 | |
2655f9ad MD |
1169 | #endif |
1170 | ||
3afe7aac MD |
1171 | #undef module_init_eval |
1172 | #undef module_exit_eval | |
1173 | #undef TP_ID1 | |
1174 | #undef TP_ID | |
177b3692 MD |
1175 | |
1176 | #undef TP_PROTO | |
1177 | #undef TP_ARGS |