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 | ||
7fad9b39 FD |
175 | /* |
176 | * Stage 1.2 of the trace event_notifier. | |
177 | * | |
178 | * Create dummy trace prototypes for each event class, and for each used | |
179 | * template. This will allow checking whether the prototypes from the | |
180 | * class and the instance using the class actually match. | |
181 | */ | |
182 | ||
183 | #include <lttng/events-reset.h> /* Reset all macros within TRACE_EVENT */ | |
184 | ||
185 | #undef TP_PROTO | |
186 | #define TP_PROTO(...) __VA_ARGS__ | |
187 | ||
188 | #undef TP_ARGS | |
189 | #define TP_ARGS(...) __VA_ARGS__ | |
190 | ||
191 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
192 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
193 | void __event_notifier_template_proto___##_template(_proto); | |
194 | ||
195 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
196 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
197 | void __event_notifier_template_proto___##_template(void); | |
198 | ||
199 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE | |
200 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ | |
201 | void __event_notifier_template_proto___##_name(_proto); | |
202 | ||
203 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS | |
204 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ | |
205 | void __event_notifier_template_proto___##_name(void); | |
206 | ||
207 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
208 | ||
209 | ||
141ddf28 MD |
210 | /* |
211 | * Stage 1.2 of tracepoint event generation | |
212 | * | |
213 | * Unfolding the enums | |
214 | */ | |
3b4aafcb | 215 | #include <lttng/events-reset.h> /* Reset all macros within TRACE_EVENT */ |
141ddf28 MD |
216 | |
217 | /* Enumeration entry (single value) */ | |
218 | #undef ctf_enum_value | |
219 | #define ctf_enum_value(_string, _value) \ | |
437d5aa5 | 220 | lttng_kernel_static_enum_entry_value(_string, _value) |
141ddf28 MD |
221 | |
222 | /* Enumeration entry (range) */ | |
223 | #undef ctf_enum_range | |
224 | #define ctf_enum_range(_string, _range_start, _range_end) \ | |
437d5aa5 | 225 | lttng_kernel_static_enum_entry_range(_string, _range_start, _range_end) |
141ddf28 | 226 | |
08ad1061 PP |
227 | /* Enumeration entry (automatic value; follows the rules of CTF) */ |
228 | #undef ctf_enum_auto | |
437d5aa5 MD |
229 | #define ctf_enum_auto(_string) \ |
230 | lttng_kernel_static_enum_entry_auto(_string) | |
08ad1061 | 231 | |
141ddf28 MD |
232 | #undef TP_ENUM_VALUES |
233 | #define TP_ENUM_VALUES(...) \ | |
234 | __VA_ARGS__ | |
235 | ||
236 | #undef LTTNG_TRACEPOINT_ENUM | |
237 | #define LTTNG_TRACEPOINT_ENUM(_name, _values) \ | |
437d5aa5 | 238 | static const struct lttng_kernel_enum_entry *__enum_values__##_name[] = { \ |
141ddf28 MD |
239 | _values \ |
240 | }; | |
241 | ||
242 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
243 | ||
6db3d13b | 244 | /* |
c099397a | 245 | * Stage 2 of the trace events. |
6db3d13b MD |
246 | * |
247 | * Create event field type metadata section. | |
248 | * Each event produce an array of fields. | |
249 | */ | |
250 | ||
f127e61e | 251 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb MD |
252 | #include <lttng/events-reset.h> |
253 | #include <lttng/events-write.h> | |
254 | #include <lttng/events-nowrite.h> | |
6db3d13b | 255 | |
f127e61e | 256 | #undef _ctf_integer_ext |
437d5aa5 MD |
257 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ |
258 | lttng_kernel_static_event_field(#_item, \ | |
259 | lttng_kernel_static_type_integer_from_type(_type, _byte_order, _base), \ | |
260 | _nowrite, _user, 0), | |
40652b65 | 261 | |
f127e61e | 262 | #undef _ctf_array_encoded |
ceabb767 MD |
263 | #define _ctf_array_encoded(_type, _item, _src, _length, \ |
264 | _encoding, _byte_order, _elem_type_base, _user, _nowrite) \ | |
437d5aa5 MD |
265 | lttng_kernel_static_event_field(#_item, \ |
266 | lttng_kernel_static_type_array(_length, \ | |
267 | lttng_kernel_static_type_integer_from_type(_type, _byte_order, _elem_type_base), \ | |
268 | 0, \ | |
269 | _encoding), \ | |
270 | _nowrite, _user, 0), | |
40652b65 | 271 | |
43803cf2 MD |
272 | #undef _ctf_array_bitfield |
273 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
437d5aa5 MD |
274 | lttng_kernel_static_event_field(#_item, \ |
275 | lttng_kernel_static_type_array((_length) * sizeof(_type) * CHAR_BIT, \ | |
276 | lttng_kernel_static_type_integer(1, 1, 0, __LITTLE_ENDIAN, 10), \ | |
277 | lttng_alignof(_type), \ | |
278 | none), \ | |
279 | _nowrite, _user, 0), | |
43803cf2 | 280 | |
f127e61e MD |
281 | #undef _ctf_sequence_encoded |
282 | #define _ctf_sequence_encoded(_type, _item, _src, \ | |
283 | _length_type, _src_length, _encoding, \ | |
ceabb767 | 284 | _byte_order, _elem_type_base, _user, _nowrite) \ |
437d5aa5 MD |
285 | lttng_kernel_static_event_field("_" #_item "_length", \ |
286 | lttng_kernel_static_type_integer_from_type(_length_type, __BYTE_ORDER, 10), \ | |
287 | _nowrite, 0, 1), \ | |
288 | lttng_kernel_static_event_field(#_item, \ | |
289 | lttng_kernel_static_type_sequence("_" #_item "_length", \ | |
290 | lttng_kernel_static_type_integer_from_type(_type, _byte_order, _elem_type_base), \ | |
291 | 0, \ | |
292 | _encoding), \ | |
293 | _nowrite, _user, 0), | |
43803cf2 MD |
294 | |
295 | #undef _ctf_sequence_bitfield | |
296 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
297 | _length_type, _src_length, \ | |
298 | _user, _nowrite) \ | |
437d5aa5 MD |
299 | lttng_kernel_static_event_field("_" #_item "_length", \ |
300 | lttng_kernel_static_type_integer_from_type(_length_type, __BYTE_ORDER, 10), \ | |
301 | _nowrite, 0, 1), \ | |
302 | lttng_kernel_static_event_field(#_item, \ | |
303 | lttng_kernel_static_type_sequence("_" #_item "_length", \ | |
304 | lttng_kernel_static_type_integer(1, 1, 0, __LITTLE_ENDIAN, 10), \ | |
305 | lttng_alignof(_type), \ | |
306 | none), \ | |
307 | _nowrite, _user, 0), | |
40652b65 | 308 | |
f127e61e MD |
309 | #undef _ctf_string |
310 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
437d5aa5 MD |
311 | lttng_kernel_static_event_field(#_item, \ |
312 | lttng_kernel_static_type_string(UTF8), \ | |
313 | _nowrite, _user, 0), | |
314 | ||
315 | #undef _ctf_unused | |
316 | #define _ctf_unused(_src) | |
1d12cebd | 317 | |
141ddf28 MD |
318 | #undef _ctf_enum |
319 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
437d5aa5 MD |
320 | lttng_kernel_static_event_field(#_item, \ |
321 | lttng_kernel_static_type_enum(&__enum_##_name, \ | |
322 | lttng_kernel_static_type_integer_from_type(_type, __BYTE_ORDER, 10)), \ | |
323 | _nowrite, _user, 0), | |
f64dd4be MD |
324 | |
325 | #undef ctf_custom_field | |
326 | #define ctf_custom_field(_type, _item, _code) \ | |
437d5aa5 | 327 | lttng_kernel_static_event_field(#_item, PARAMS(_type), 0, 0, 1), |
f64dd4be MD |
328 | |
329 | #undef ctf_custom_type | |
330 | #define ctf_custom_type(...) __VA_ARGS__ | |
331 | ||
f127e61e MD |
332 | #undef TP_FIELDS |
333 | #define TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */ | |
1d12cebd | 334 | |
3bc29f0a | 335 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 336 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
437d5aa5 | 337 | static const struct lttng_kernel_event_field *__event_fields___##_name[] = { \ |
f127e61e | 338 | _fields \ |
299338c8 MD |
339 | }; |
340 | ||
3bc29f0a | 341 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae MD |
342 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
343 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, PARAMS(_fields), _code_post) | |
f7bdf4db | 344 | |
141ddf28 MD |
345 | #undef LTTNG_TRACEPOINT_ENUM |
346 | #define LTTNG_TRACEPOINT_ENUM(_name, _values) \ | |
d96a4a7a | 347 | static const struct lttng_kernel_enum_desc __enum_##_name = { \ |
141ddf28 MD |
348 | .name = #_name, \ |
349 | .entries = __enum_values__##_name, \ | |
350 | .nr_entries = ARRAY_SIZE(__enum_values__##_name), \ | |
351 | }; | |
352 | ||
437d5aa5 | 353 | #define LTTNG_CREATE_FIELD_METADATA |
299338c8 | 354 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
437d5aa5 | 355 | #undef LTTNG_CREATE_FIELD_METADATA |
299338c8 | 356 | |
19c57fbf | 357 | /* |
c099397a | 358 | * Stage 3 of the trace events. |
19c57fbf MD |
359 | * |
360 | * Create probe callback prototypes. | |
361 | */ | |
362 | ||
f127e61e | 363 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb | 364 | #include <lttng/events-reset.h> |
19c57fbf MD |
365 | |
366 | #undef TP_PROTO | |
f127e61e | 367 | #define TP_PROTO(...) __VA_ARGS__ |
19c57fbf | 368 | |
3bc29f0a | 369 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 370 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
19c57fbf MD |
371 | static void __event_probe__##_name(void *__data, _proto); |
372 | ||
3bc29f0a | 373 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 374 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f7bdf4db MD |
375 | static void __event_probe__##_name(void *__data); |
376 | ||
19c57fbf MD |
377 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
378 | ||
7fad9b39 FD |
379 | /* |
380 | * Stage 3.1 of the trace event_notifiers. | |
381 | * | |
382 | * Create event_notifier probe callback prototypes. | |
383 | */ | |
384 | ||
385 | /* Reset all macros within TRACEPOINT_EVENT */ | |
386 | #include <lttng/events-reset.h> | |
387 | ||
388 | #undef TP_PROTO | |
389 | #define TP_PROTO(...) __VA_ARGS__ | |
390 | ||
391 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE | |
392 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ | |
393 | static void __event_notifier_probe__##_name(void *__data, _proto); | |
394 | ||
395 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS | |
396 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ | |
397 | static void __event_notifier_probe__##_name(void *__data); | |
398 | ||
399 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
400 | ||
f7bdf4db MD |
401 | /* |
402 | * Stage 4 of the trace events. | |
403 | * | |
40652b65 MD |
404 | * Create static inline function that calculates event size. |
405 | */ | |
406 | ||
f127e61e | 407 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb MD |
408 | #include <lttng/events-reset.h> |
409 | #include <lttng/events-write.h> | |
6db3d13b | 410 | |
f127e61e MD |
411 | #undef _ctf_integer_ext |
412 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ | |
a90917c3 | 413 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
0d1d4002 | 414 | __event_len += sizeof(_type); |
6db3d13b | 415 | |
f127e61e | 416 | #undef _ctf_array_encoded |
3834b99f | 417 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
a90917c3 | 418 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
0d1d4002 | 419 | __event_len += sizeof(_type) * (_length); |
6db3d13b | 420 | |
43803cf2 MD |
421 | #undef _ctf_array_bitfield |
422 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
3834b99f | 423 | _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite) |
43803cf2 | 424 | |
f127e61e MD |
425 | #undef _ctf_sequence_encoded |
426 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 427 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
428 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_length_type)); \ |
429 | __event_len += sizeof(_length_type); \ | |
a90917c3 | 430 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
114667d5 MD |
431 | { \ |
432 | size_t __seqlen = (_src_length); \ | |
433 | \ | |
434 | if (unlikely(++this_cpu_ptr(<tng_dynamic_len_stack)->offset >= LTTNG_DYNAMIC_LEN_STACK_SIZE)) \ | |
435 | goto error; \ | |
436 | barrier(); /* reserve before use. */ \ | |
437 | this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = __seqlen; \ | |
438 | __event_len += sizeof(_type) * __seqlen; \ | |
439 | } | |
6db3d13b | 440 | |
43803cf2 MD |
441 | #undef _ctf_sequence_bitfield |
442 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
443 | _length_type, _src_length, \ | |
444 | _user, _nowrite) \ | |
445 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
446 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
447 | ||
d0255731 | 448 | /* |
f127e61e | 449 | * ctf_user_string includes \0. If returns 0, it faulted, so we set size to |
786b8312 | 450 | * 1 (\0 only). |
d0255731 | 451 | */ |
f127e61e MD |
452 | #undef _ctf_string |
453 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
114667d5 MD |
454 | if (unlikely(++this_cpu_ptr(<tng_dynamic_len_stack)->offset >= LTTNG_DYNAMIC_LEN_STACK_SIZE)) \ |
455 | goto error; \ | |
456 | barrier(); /* reserve before use. */ \ | |
457 | if (_user) { \ | |
458 | __event_len += this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = \ | |
96d0248a | 459 | max_t(size_t, lttng_strlen_user_inatomic(_src), 1); \ |
114667d5 MD |
460 | } else { \ |
461 | __event_len += this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = \ | |
1d84e8e7 | 462 | strlen((_src) ? (_src) : __LTTNG_NULL_STRING) + 1; \ |
114667d5 | 463 | } |
c6e3f225 | 464 | |
141ddf28 MD |
465 | #undef _ctf_enum |
466 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
467 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
468 | ||
f64dd4be MD |
469 | #undef ctf_align |
470 | #define ctf_align(_type) \ | |
471 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); | |
472 | ||
473 | #undef ctf_custom_field | |
474 | #define ctf_custom_field(_type, _item, _code) \ | |
475 | { \ | |
476 | _code \ | |
477 | } | |
478 | ||
479 | #undef ctf_custom_code | |
480 | #define ctf_custom_code(...) __VA_ARGS__ | |
481 | ||
0d1d4002 | 482 | #undef TP_PROTO |
f127e61e | 483 | #define TP_PROTO(...) __VA_ARGS__ |
6db3d13b | 484 | |
f127e61e MD |
485 | #undef TP_FIELDS |
486 | #define TP_FIELDS(...) __VA_ARGS__ | |
6db3d13b | 487 | |
7ca580f8 MD |
488 | #undef TP_locvar |
489 | #define TP_locvar(...) __VA_ARGS__ | |
490 | ||
3bc29f0a | 491 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 492 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
114667d5 | 493 | static inline ssize_t __event_get_size__##_name(void *__tp_locvar, _proto) \ |
0d1d4002 MD |
494 | { \ |
495 | size_t __event_len = 0; \ | |
d3de7f14 | 496 | unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \ |
7ca580f8 | 497 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
d3de7f14 | 498 | \ |
f127e61e | 499 | _fields \ |
d3de7f14 | 500 | return __event_len; \ |
114667d5 MD |
501 | \ |
502 | error: \ | |
503 | __attribute__((unused)); \ | |
504 | return -1; \ | |
d3de7f14 MD |
505 | } |
506 | ||
3bc29f0a | 507 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 508 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
114667d5 | 509 | static inline ssize_t __event_get_size__##_name(void *__tp_locvar) \ |
d3de7f14 MD |
510 | { \ |
511 | size_t __event_len = 0; \ | |
512 | unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \ | |
7ca580f8 | 513 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
0d1d4002 | 514 | \ |
f127e61e | 515 | _fields \ |
0d1d4002 | 516 | return __event_len; \ |
114667d5 MD |
517 | \ |
518 | error: \ | |
519 | __attribute__((unused)); \ | |
520 | return -1; \ | |
6db3d13b | 521 | } |
40652b65 MD |
522 | |
523 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
524 | ||
f127e61e | 525 | |
40652b65 | 526 | /* |
f127e61e | 527 | * Stage 4.1 of tracepoint event generation. |
e763dbf5 | 528 | * |
f127e61e MD |
529 | * Create static inline function that layout the filter stack data. |
530 | * We make both write and nowrite data available to the filter. | |
e763dbf5 MD |
531 | */ |
532 | ||
f127e61e | 533 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb MD |
534 | #include <lttng/events-reset.h> |
535 | #include <lttng/events-write.h> | |
536 | #include <lttng/events-nowrite.h> | |
f127e61e MD |
537 | |
538 | #undef _ctf_integer_ext_fetched | |
539 | #define _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
540 | if (lttng_is_signed_type(_type)) { \ | |
541 | int64_t __ctf_tmp_int64; \ | |
542 | switch (sizeof(_type)) { \ | |
543 | case 1: \ | |
544 | { \ | |
545 | union { _type t; int8_t v; } __tmp = { (_type) (_src) }; \ | |
546 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ | |
547 | break; \ | |
548 | } \ | |
549 | case 2: \ | |
550 | { \ | |
551 | union { _type t; int16_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
552 | if (_byte_order != __BYTE_ORDER) \ |
553 | __swab16s(&__tmp.v); \ | |
f127e61e MD |
554 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
555 | break; \ | |
556 | } \ | |
557 | case 4: \ | |
558 | { \ | |
559 | union { _type t; int32_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
560 | if (_byte_order != __BYTE_ORDER) \ |
561 | __swab32s(&__tmp.v); \ | |
f127e61e MD |
562 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
563 | break; \ | |
564 | } \ | |
565 | case 8: \ | |
566 | { \ | |
567 | union { _type t; int64_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
568 | if (_byte_order != __BYTE_ORDER) \ |
569 | __swab64s(&__tmp.v); \ | |
f127e61e MD |
570 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
571 | break; \ | |
572 | } \ | |
573 | default: \ | |
574 | BUG_ON(1); \ | |
575 | }; \ | |
576 | memcpy(__stack_data, &__ctf_tmp_int64, sizeof(int64_t)); \ | |
577 | } else { \ | |
578 | uint64_t __ctf_tmp_uint64; \ | |
579 | switch (sizeof(_type)) { \ | |
580 | case 1: \ | |
581 | { \ | |
582 | union { _type t; uint8_t v; } __tmp = { (_type) (_src) }; \ | |
583 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ | |
584 | break; \ | |
585 | } \ | |
586 | case 2: \ | |
587 | { \ | |
588 | union { _type t; uint16_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
589 | if (_byte_order != __BYTE_ORDER) \ |
590 | __swab16s(&__tmp.v); \ | |
f127e61e MD |
591 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
592 | break; \ | |
593 | } \ | |
594 | case 4: \ | |
595 | { \ | |
596 | union { _type t; uint32_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
597 | if (_byte_order != __BYTE_ORDER) \ |
598 | __swab32s(&__tmp.v); \ | |
f127e61e MD |
599 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
600 | break; \ | |
601 | } \ | |
602 | case 8: \ | |
603 | { \ | |
604 | union { _type t; uint64_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
605 | if (_byte_order != __BYTE_ORDER) \ |
606 | __swab64s(&__tmp.v); \ | |
f127e61e MD |
607 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
608 | break; \ | |
609 | } \ | |
610 | default: \ | |
611 | BUG_ON(1); \ | |
612 | }; \ | |
613 | memcpy(__stack_data, &__ctf_tmp_uint64, sizeof(uint64_t)); \ | |
614 | } \ | |
615 | __stack_data += sizeof(int64_t); | |
616 | ||
617 | #undef _ctf_integer_ext_isuser0 | |
618 | #define _ctf_integer_ext_isuser0(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
619 | _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) | |
620 | ||
621 | #undef _ctf_integer_ext_isuser1 | |
622 | #define _ctf_integer_ext_isuser1(_type, _item, _user_src, _byte_order, _base, _nowrite) \ | |
3c8ebbc8 MD |
623 | { \ |
624 | union { \ | |
625 | char __array[sizeof(_user_src)]; \ | |
626 | __typeof__(_user_src) __v; \ | |
627 | } __tmp_fetch; \ | |
628 | if (lib_ring_buffer_copy_from_user_check_nofault(__tmp_fetch.__array, \ | |
629 | &(_user_src), sizeof(_user_src))) \ | |
630 | memset(__tmp_fetch.__array, 0, sizeof(__tmp_fetch.__array)); \ | |
631 | _ctf_integer_ext_fetched(_type, _item, __tmp_fetch.__v, _byte_order, _base, _nowrite) \ | |
f127e61e | 632 | } |
e763dbf5 | 633 | |
f127e61e MD |
634 | #undef _ctf_integer_ext |
635 | #define _ctf_integer_ext(_type, _item, _user_src, _byte_order, _base, _user, _nowrite) \ | |
636 | _ctf_integer_ext_isuser##_user(_type, _item, _user_src, _byte_order, _base, _nowrite) | |
637 | ||
638 | #undef _ctf_array_encoded | |
3834b99f | 639 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
640 | { \ |
641 | unsigned long __ctf_tmp_ulong = (unsigned long) (_length); \ | |
642 | const void *__ctf_tmp_ptr = (_src); \ | |
643 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ | |
644 | __stack_data += sizeof(unsigned long); \ | |
6b272cda MD |
645 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
646 | __stack_data += sizeof(void *); \ | |
f127e61e MD |
647 | } |
648 | ||
43803cf2 MD |
649 | #undef _ctf_array_bitfield |
650 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
3834b99f | 651 | _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite) |
43803cf2 | 652 | |
f127e61e MD |
653 | #undef _ctf_sequence_encoded |
654 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 655 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
656 | { \ |
657 | unsigned long __ctf_tmp_ulong = (unsigned long) (_src_length); \ | |
658 | const void *__ctf_tmp_ptr = (_src); \ | |
659 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ | |
660 | __stack_data += sizeof(unsigned long); \ | |
6b272cda MD |
661 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
662 | __stack_data += sizeof(void *); \ | |
f127e61e MD |
663 | } |
664 | ||
43803cf2 MD |
665 | #undef _ctf_sequence_bitfield |
666 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
667 | _length_type, _src_length, \ | |
668 | _user, _nowrite) \ | |
669 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
670 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
671 | ||
f127e61e MD |
672 | #undef _ctf_string |
673 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
674 | { \ | |
1d84e8e7 MD |
675 | const void *__ctf_tmp_ptr = \ |
676 | ((_src) ? (_src) : __LTTNG_NULL_STRING); \ | |
6b272cda MD |
677 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
678 | __stack_data += sizeof(void *); \ | |
f127e61e | 679 | } |
c6e3f225 | 680 | |
141ddf28 MD |
681 | #undef _ctf_enum |
682 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
683 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
684 | ||
e763dbf5 | 685 | #undef TP_PROTO |
f127e61e | 686 | #define TP_PROTO(...) __VA_ARGS__ |
e763dbf5 | 687 | |
f127e61e MD |
688 | #undef TP_FIELDS |
689 | #define TP_FIELDS(...) __VA_ARGS__ | |
e763dbf5 | 690 | |
7ca580f8 MD |
691 | #undef TP_locvar |
692 | #define TP_locvar(...) __VA_ARGS__ | |
693 | ||
f127e61e | 694 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 695 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e | 696 | static inline \ |
99d223ad | 697 | void __event_prepare_interpreter_stack__##_name(char *__stack_data, \ |
f127e61e | 698 | void *__tp_locvar) \ |
e763dbf5 | 699 | { \ |
7ca580f8 MD |
700 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
701 | \ | |
f127e61e | 702 | _fields \ |
e763dbf5 MD |
703 | } |
704 | ||
f127e61e | 705 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 706 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e | 707 | static inline \ |
99d223ad | 708 | void __event_prepare_interpreter_stack__##_name(char *__stack_data, \ |
f127e61e | 709 | void *__tp_locvar, _proto) \ |
d3de7f14 | 710 | { \ |
7ca580f8 MD |
711 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
712 | \ | |
f127e61e | 713 | _fields \ |
d3de7f14 MD |
714 | } |
715 | ||
e763dbf5 MD |
716 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
717 | ||
e763dbf5 | 718 | /* |
f127e61e | 719 | * Stage 5 of the trace events. |
40652b65 | 720 | * |
f127e61e | 721 | * Create static inline function that calculates event payload alignment. |
3c4ffab9 MD |
722 | */ |
723 | ||
f127e61e | 724 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb MD |
725 | #include <lttng/events-reset.h> |
726 | #include <lttng/events-write.h> | |
3c4ffab9 | 727 | |
f127e61e MD |
728 | #undef _ctf_integer_ext |
729 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ | |
730 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
3c4ffab9 | 731 | |
f127e61e | 732 | #undef _ctf_array_encoded |
3834b99f | 733 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e | 734 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); |
3c4ffab9 | 735 | |
43803cf2 MD |
736 | #undef _ctf_array_bitfield |
737 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
3834b99f | 738 | _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite) |
43803cf2 | 739 | |
f127e61e MD |
740 | #undef _ctf_sequence_encoded |
741 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 742 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
743 | __event_align = max_t(size_t, __event_align, lttng_alignof(_length_type)); \ |
744 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
64c796d8 | 745 | |
43803cf2 MD |
746 | #undef _ctf_sequence_bitfield |
747 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
748 | _length_type, _src_length, \ | |
749 | _user, _nowrite) \ | |
750 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
751 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
752 | ||
f127e61e MD |
753 | #undef _ctf_string |
754 | #define _ctf_string(_item, _src, _user, _nowrite) | |
64c796d8 | 755 | |
141ddf28 MD |
756 | #undef _ctf_enum |
757 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
758 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
759 | ||
f64dd4be MD |
760 | #undef ctf_align |
761 | #define ctf_align(_type) \ | |
762 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
763 | ||
f127e61e MD |
764 | #undef TP_PROTO |
765 | #define TP_PROTO(...) __VA_ARGS__ | |
84da5206 | 766 | |
f127e61e MD |
767 | #undef TP_FIELDS |
768 | #define TP_FIELDS(...) __VA_ARGS__ | |
c6e3f225 | 769 | |
f127e61e MD |
770 | #undef TP_locvar |
771 | #define TP_locvar(...) __VA_ARGS__ | |
3c4ffab9 | 772 | |
f64dd4be MD |
773 | #undef ctf_custom_field |
774 | #define ctf_custom_field(_type, _item, _code) _code | |
775 | ||
776 | #undef ctf_custom_code | |
777 | #define ctf_custom_code(...) \ | |
778 | { \ | |
779 | __VA_ARGS__ \ | |
780 | } | |
781 | ||
f127e61e | 782 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 783 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
784 | static inline size_t __event_get_align__##_name(void *__tp_locvar, _proto) \ |
785 | { \ | |
786 | size_t __event_align = 1; \ | |
787 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ | |
788 | \ | |
789 | _fields \ | |
790 | return __event_align; \ | |
791 | } | |
3c4ffab9 | 792 | |
3bc29f0a | 793 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 794 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
795 | static inline size_t __event_get_align__##_name(void *__tp_locvar) \ |
796 | { \ | |
797 | size_t __event_align = 1; \ | |
798 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ | |
799 | \ | |
800 | _fields \ | |
801 | return __event_align; \ | |
802 | } | |
d3de7f14 | 803 | |
3c4ffab9 MD |
804 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
805 | ||
3c4ffab9 | 806 | /* |
f127e61e | 807 | * Stage 6 of tracepoint event generation. |
e763dbf5 | 808 | * |
f127e61e MD |
809 | * Create the probe function. This function calls event size calculation |
810 | * and writes event data into the buffer. | |
40652b65 MD |
811 | */ |
812 | ||
f127e61e | 813 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb MD |
814 | #include <lttng/events-reset.h> |
815 | #include <lttng/events-write.h> | |
c6e3f225 | 816 | |
f127e61e MD |
817 | #undef _ctf_integer_ext_fetched |
818 | #define _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
e763dbf5 | 819 | { \ |
f127e61e MD |
820 | _type __tmp = _src; \ |
821 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\ | |
aaa4004a | 822 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ |
f127e61e MD |
823 | } |
824 | ||
825 | #undef _ctf_integer_ext_isuser0 | |
826 | #define _ctf_integer_ext_isuser0(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
827 | _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) | |
828 | ||
829 | #undef _ctf_integer_ext_isuser1 | |
830 | #define _ctf_integer_ext_isuser1(_type, _item, _user_src, _byte_order, _base, _nowrite) \ | |
831 | { \ | |
3c8ebbc8 MD |
832 | union { \ |
833 | char __array[sizeof(_user_src)]; \ | |
834 | __typeof__(_user_src) __v; \ | |
835 | } __tmp_fetch; \ | |
836 | if (lib_ring_buffer_copy_from_user_check_nofault(__tmp_fetch.__array, \ | |
837 | &(_user_src), sizeof(_user_src))) \ | |
838 | memset(__tmp_fetch.__array, 0, sizeof(__tmp_fetch.__array)); \ | |
839 | _ctf_integer_ext_fetched(_type, _item, __tmp_fetch.__v, _byte_order, _base, _nowrite) \ | |
f127e61e MD |
840 | } |
841 | ||
842 | #undef _ctf_integer_ext | |
843 | #define _ctf_integer_ext(_type, _item, _user_src, _byte_order, _base, _user, _nowrite) \ | |
844 | _ctf_integer_ext_isuser##_user(_type, _item, _user_src, _byte_order, _base, _nowrite) | |
845 | ||
846 | #undef _ctf_array_encoded | |
3834b99f | 847 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
848 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ |
849 | if (_user) { \ | |
850 | __chan->ops->event_write_from_user(&__ctx, _src, sizeof(_type) * (_length)); \ | |
851 | } else { \ | |
852 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); \ | |
853 | } | |
854 | ||
43803cf2 MD |
855 | #if (__BYTE_ORDER == __LITTLE_ENDIAN) |
856 | #undef _ctf_array_bitfield | |
857 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
858 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
859 | if (_user) { \ | |
860 | __chan->ops->event_write_from_user(&__ctx, _src, sizeof(_type) * (_length)); \ | |
861 | } else { \ | |
862 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); \ | |
863 | } | |
864 | #else /* #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
865 | /* | |
866 | * For big endian, we need to byteswap into little endian. | |
867 | */ | |
868 | #undef _ctf_array_bitfield | |
869 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
870 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
871 | { \ | |
872 | size_t _i; \ | |
873 | \ | |
874 | for (_i = 0; _i < (_length); _i++) { \ | |
875 | _type _tmp; \ | |
876 | \ | |
877 | if (_user) { \ | |
878 | if (get_user(_tmp, (_type *) _src + _i)) \ | |
879 | _tmp = 0; \ | |
880 | } else { \ | |
881 | _tmp = ((_type *) _src)[_i]; \ | |
882 | } \ | |
883 | switch (sizeof(_type)) { \ | |
884 | case 1: \ | |
885 | break; \ | |
886 | case 2: \ | |
887 | _tmp = cpu_to_le16(_tmp); \ | |
888 | break; \ | |
889 | case 4: \ | |
890 | _tmp = cpu_to_le32(_tmp); \ | |
891 | break; \ | |
892 | case 8: \ | |
893 | _tmp = cpu_to_le64(_tmp); \ | |
894 | break; \ | |
895 | default: \ | |
896 | BUG_ON(1); \ | |
897 | } \ | |
898 | __chan->ops->event_write(&__ctx, &_tmp, sizeof(_type)); \ | |
899 | } \ | |
900 | } | |
901 | #endif /* #else #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
902 | ||
f127e61e MD |
903 | #undef _ctf_sequence_encoded |
904 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 905 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
84da5206 | 906 | { \ |
114667d5 | 907 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx]; \ |
f127e61e MD |
908 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
909 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
84da5206 | 910 | } \ |
f127e61e MD |
911 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ |
912 | if (_user) { \ | |
913 | __chan->ops->event_write_from_user(&__ctx, _src, \ | |
914 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
915 | } else { \ | |
916 | __chan->ops->event_write(&__ctx, _src, \ | |
917 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
918 | } | |
919 | ||
43803cf2 MD |
920 | #if (__BYTE_ORDER == __LITTLE_ENDIAN) |
921 | #undef _ctf_sequence_bitfield | |
922 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
923 | _length_type, _src_length, \ | |
924 | _user, _nowrite) \ | |
925 | { \ | |
114667d5 | 926 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx] * sizeof(_type) * CHAR_BIT; \ |
43803cf2 MD |
927 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
928 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
929 | } \ | |
930 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
931 | if (_user) { \ | |
932 | __chan->ops->event_write_from_user(&__ctx, _src, \ | |
933 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
934 | } else { \ | |
935 | __chan->ops->event_write(&__ctx, _src, \ | |
936 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
937 | } | |
938 | #else /* #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
939 | /* | |
940 | * For big endian, we need to byteswap into little endian. | |
941 | */ | |
942 | #undef _ctf_sequence_bitfield | |
943 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
944 | _length_type, _src_length, \ | |
945 | _user, _nowrite) \ | |
946 | { \ | |
114667d5 | 947 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx] * sizeof(_type) * CHAR_BIT; \ |
43803cf2 MD |
948 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
949 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
950 | } \ | |
951 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
952 | { \ | |
953 | size_t _i, _length; \ | |
954 | \ | |
955 | _length = __get_dynamic_len(dest); \ | |
956 | for (_i = 0; _i < _length; _i++) { \ | |
957 | _type _tmp; \ | |
958 | \ | |
959 | if (_user) { \ | |
960 | if (get_user(_tmp, (_type *) _src + _i)) \ | |
961 | _tmp = 0; \ | |
962 | } else { \ | |
963 | _tmp = ((_type *) _src)[_i]; \ | |
964 | } \ | |
965 | switch (sizeof(_type)) { \ | |
966 | case 1: \ | |
967 | break; \ | |
968 | case 2: \ | |
969 | _tmp = cpu_to_le16(_tmp); \ | |
970 | break; \ | |
971 | case 4: \ | |
972 | _tmp = cpu_to_le32(_tmp); \ | |
973 | break; \ | |
974 | case 8: \ | |
975 | _tmp = cpu_to_le64(_tmp); \ | |
976 | break; \ | |
977 | default: \ | |
978 | BUG_ON(1); \ | |
979 | } \ | |
980 | __chan->ops->event_write(&__ctx, &_tmp, sizeof(_type)); \ | |
981 | } \ | |
982 | } | |
983 | #endif /* #else #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
984 | ||
f127e61e MD |
985 | #undef _ctf_string |
986 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
f127e61e | 987 | if (_user) { \ |
1d84e8e7 | 988 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(*(_src))); \ |
f127e61e MD |
989 | __chan->ops->event_strcpy_from_user(&__ctx, _src, \ |
990 | __get_dynamic_len(dest)); \ | |
991 | } else { \ | |
1d84e8e7 MD |
992 | const char *__ctf_tmp_string = \ |
993 | ((_src) ? (_src) : __LTTNG_NULL_STRING); \ | |
994 | lib_ring_buffer_align_ctx(&__ctx, \ | |
995 | lttng_alignof(*__ctf_tmp_string)); \ | |
996 | __chan->ops->event_strcpy(&__ctx, __ctf_tmp_string, \ | |
f127e61e MD |
997 | __get_dynamic_len(dest)); \ |
998 | } | |
e763dbf5 | 999 | |
141ddf28 MD |
1000 | #undef _ctf_enum |
1001 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
1002 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
f64dd4be MD |
1003 | |
1004 | #undef ctf_align | |
1005 | #define ctf_align(_type) \ | |
1006 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); | |
1007 | ||
1008 | #undef ctf_custom_field | |
1009 | #define ctf_custom_field(_type, _item, _code) _code | |
1010 | ||
1011 | #undef ctf_custom_code | |
1012 | #define ctf_custom_code(...) \ | |
1013 | { \ | |
1014 | __VA_ARGS__ \ | |
1015 | } | |
1016 | ||
e763dbf5 | 1017 | /* Beware: this get len actually consumes the len value */ |
f127e61e | 1018 | #undef __get_dynamic_len |
114667d5 | 1019 | #define __get_dynamic_len(field) this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx++] |
e763dbf5 MD |
1020 | |
1021 | #undef TP_PROTO | |
f127e61e | 1022 | #define TP_PROTO(...) __VA_ARGS__ |
e763dbf5 MD |
1023 | |
1024 | #undef TP_ARGS | |
f127e61e | 1025 | #define TP_ARGS(...) __VA_ARGS__ |
e763dbf5 | 1026 | |
f127e61e MD |
1027 | #undef TP_FIELDS |
1028 | #define TP_FIELDS(...) __VA_ARGS__ | |
e763dbf5 | 1029 | |
7ca580f8 MD |
1030 | #undef TP_locvar |
1031 | #define TP_locvar(...) __VA_ARGS__ | |
1032 | ||
265822ae MD |
1033 | #undef TP_code_pre |
1034 | #define TP_code_pre(...) __VA_ARGS__ | |
1035 | ||
1036 | #undef TP_code_post | |
1037 | #define TP_code_post(...) __VA_ARGS__ | |
7ca580f8 | 1038 | |
c337ddc2 MD |
1039 | /* |
1040 | * For state dump, check that "session" argument (mandatory) matches the | |
1041 | * session this event belongs to. Ensures that we write state dump data only | |
1042 | * into the started session, not into all sessions. | |
1043 | */ | |
1044 | #ifdef TP_SESSION_CHECK | |
1045 | #define _TP_SESSION_CHECK(session, csession) (session == csession) | |
1046 | #else /* TP_SESSION_CHECK */ | |
1047 | #define _TP_SESSION_CHECK(session, csession) 1 | |
1048 | #endif /* TP_SESSION_CHECK */ | |
1049 | ||
f9771d39 | 1050 | /* |
f127e61e MD |
1051 | * Using twice size for filter stack data to hold size and pointer for |
1052 | * each field (worse case). For integers, max size required is 64-bit. | |
1053 | * Same for double-precision floats. Those fit within | |
1054 | * 2*sizeof(unsigned long) for all supported architectures. | |
1055 | * Perform UNION (||) of filter runtime list. | |
f9771d39 | 1056 | */ |
3bc29f0a | 1057 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 1058 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
e763dbf5 MD |
1059 | static void __event_probe__##_name(void *__data, _proto) \ |
1060 | { \ | |
7ca580f8 | 1061 | struct probe_local_vars { _locvar }; \ |
a90917c3 | 1062 | struct lttng_event *__event = __data; \ |
7fad9b39 | 1063 | struct lttng_probe_ctx __lttng_probe_ctx = { \ |
79150a49 | 1064 | .event = __event, \ |
7fad9b39 | 1065 | .event_notifier = NULL, \ |
ccecf3fb | 1066 | .interruptible = !irqs_disabled(), \ |
79150a49 | 1067 | }; \ |
a90917c3 | 1068 | struct lttng_channel *__chan = __event->chan; \ |
e0130fab | 1069 | struct lttng_session *__session = __chan->session; \ |
aaa4004a | 1070 | struct lib_ring_buffer_ctx __ctx; \ |
114667d5 MD |
1071 | ssize_t __event_len; \ |
1072 | size_t __event_align; \ | |
ec0a7fba | 1073 | size_t __orig_dynamic_len_offset, __dynamic_len_idx __attribute__((unused)); \ |
f127e61e | 1074 | union { \ |
114667d5 | 1075 | size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)]; \ |
f127e61e MD |
1076 | char __filter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \ |
1077 | } __stackvar; \ | |
e763dbf5 | 1078 | int __ret; \ |
7ca580f8 MD |
1079 | struct probe_local_vars __tp_locvar; \ |
1080 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
1081 | &__tp_locvar; \ | |
d1f652f8 | 1082 | struct lttng_id_tracker_rcu *__lf; \ |
e763dbf5 | 1083 | \ |
e0130fab | 1084 | if (!_TP_SESSION_CHECK(session, __session)) \ |
c337ddc2 | 1085 | return; \ |
585e5dcc | 1086 | if (unlikely(!LTTNG_READ_ONCE(__session->active))) \ |
e64957da | 1087 | return; \ |
585e5dcc | 1088 | if (unlikely(!LTTNG_READ_ONCE(__chan->enabled))) \ |
e64957da | 1089 | return; \ |
585e5dcc | 1090 | if (unlikely(!LTTNG_READ_ONCE(__event->enabled))) \ |
52fc2e1f | 1091 | return; \ |
d1f652f8 MD |
1092 | __lf = lttng_rcu_dereference(__session->pid_tracker.p); \ |
1093 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, current->tgid))) \ | |
1094 | return; \ | |
1095 | __lf = lttng_rcu_dereference(__session->vpid_tracker.p); \ | |
1096 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, task_tgid_vnr(current)))) \ | |
1097 | return; \ | |
1098 | __lf = lttng_rcu_dereference(__session->uid_tracker.p); \ | |
1099 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1100 | lttng_current_uid()))) \ |
d1f652f8 MD |
1101 | return; \ |
1102 | __lf = lttng_rcu_dereference(__session->vuid_tracker.p); \ | |
1103 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1104 | lttng_current_vuid()))) \ |
d1f652f8 MD |
1105 | return; \ |
1106 | __lf = lttng_rcu_dereference(__session->gid_tracker.p); \ | |
1107 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1108 | lttng_current_gid()))) \ |
d1f652f8 MD |
1109 | return; \ |
1110 | __lf = lttng_rcu_dereference(__session->vgid_tracker.p); \ | |
1111 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1112 | lttng_current_vgid()))) \ |
e0130fab | 1113 | return; \ |
114667d5 MD |
1114 | __orig_dynamic_len_offset = this_cpu_ptr(<tng_dynamic_len_stack)->offset; \ |
1115 | __dynamic_len_idx = __orig_dynamic_len_offset; \ | |
265822ae | 1116 | _code_pre \ |
183e8b3a | 1117 | if (unlikely(!list_empty(&__event->filter_bytecode_runtime_head))) { \ |
f127e61e MD |
1118 | struct lttng_bytecode_runtime *bc_runtime; \ |
1119 | int __filter_record = __event->has_enablers_without_bytecode; \ | |
1120 | \ | |
99d223ad | 1121 | __event_prepare_interpreter_stack__##_name(__stackvar.__filter_stack_data, \ |
f127e61e | 1122 | tp_locvar, _args); \ |
183e8b3a | 1123 | lttng_list_for_each_entry_rcu(bc_runtime, &__event->filter_bytecode_runtime_head, node) { \ |
3d650c7b | 1124 | if (unlikely(bc_runtime->interpreter_funcs.filter(bc_runtime, &__lttng_probe_ctx, \ |
80c2a69a | 1125 | __stackvar.__filter_stack_data) & LTTNG_INTERPRETER_RECORD_FLAG)) { \ |
f127e61e | 1126 | __filter_record = 1; \ |
8904bcfa FD |
1127 | break; \ |
1128 | } \ | |
f127e61e MD |
1129 | } \ |
1130 | if (likely(!__filter_record)) \ | |
265822ae | 1131 | goto __post; \ |
f127e61e | 1132 | } \ |
114667d5 MD |
1133 | __event_len = __event_get_size__##_name(tp_locvar, _args); \ |
1134 | if (unlikely(__event_len < 0)) { \ | |
1135 | lib_ring_buffer_lost_event_too_big(__chan->chan); \ | |
1136 | goto __post; \ | |
1137 | } \ | |
7ca580f8 | 1138 | __event_align = __event_get_align__##_name(tp_locvar, _args); \ |
79150a49 | 1139 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, &__lttng_probe_ctx, __event_len, \ |
e763dbf5 | 1140 | __event_align, -1); \ |
aaa4004a | 1141 | __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ |
e763dbf5 | 1142 | if (__ret < 0) \ |
265822ae | 1143 | goto __post; \ |
f127e61e | 1144 | _fields \ |
aaa4004a | 1145 | __chan->ops->event_commit(&__ctx); \ |
265822ae MD |
1146 | __post: \ |
1147 | _code_post \ | |
114667d5 MD |
1148 | barrier(); /* use before un-reserve. */ \ |
1149 | this_cpu_ptr(<tng_dynamic_len_stack)->offset = __orig_dynamic_len_offset; \ | |
265822ae | 1150 | return; \ |
e763dbf5 MD |
1151 | } |
1152 | ||
3bc29f0a | 1153 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 1154 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f7bdf4db MD |
1155 | static void __event_probe__##_name(void *__data) \ |
1156 | { \ | |
7ca580f8 | 1157 | struct probe_local_vars { _locvar }; \ |
a90917c3 | 1158 | struct lttng_event *__event = __data; \ |
7fad9b39 | 1159 | struct lttng_probe_ctx __lttng_probe_ctx = { \ |
79150a49 | 1160 | .event = __event, \ |
7fad9b39 | 1161 | .event_notifier = NULL, \ |
ccecf3fb | 1162 | .interruptible = !irqs_disabled(), \ |
79150a49 | 1163 | }; \ |
a90917c3 | 1164 | struct lttng_channel *__chan = __event->chan; \ |
e0130fab | 1165 | struct lttng_session *__session = __chan->session; \ |
f7bdf4db | 1166 | struct lib_ring_buffer_ctx __ctx; \ |
114667d5 MD |
1167 | ssize_t __event_len; \ |
1168 | size_t __event_align; \ | |
ec0a7fba | 1169 | size_t __orig_dynamic_len_offset, __dynamic_len_idx __attribute__((unused)); \ |
f127e61e | 1170 | union { \ |
114667d5 | 1171 | size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)]; \ |
f127e61e MD |
1172 | char __filter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \ |
1173 | } __stackvar; \ | |
f7bdf4db | 1174 | int __ret; \ |
7ca580f8 MD |
1175 | struct probe_local_vars __tp_locvar; \ |
1176 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
1177 | &__tp_locvar; \ | |
d1f652f8 | 1178 | struct lttng_id_tracker_rcu *__lf; \ |
f7bdf4db | 1179 | \ |
e0130fab | 1180 | if (!_TP_SESSION_CHECK(session, __session)) \ |
c337ddc2 | 1181 | return; \ |
585e5dcc | 1182 | if (unlikely(!LTTNG_READ_ONCE(__session->active))) \ |
f7bdf4db | 1183 | return; \ |
585e5dcc | 1184 | if (unlikely(!LTTNG_READ_ONCE(__chan->enabled))) \ |
f7bdf4db | 1185 | return; \ |
585e5dcc | 1186 | if (unlikely(!LTTNG_READ_ONCE(__event->enabled))) \ |
f7bdf4db | 1187 | return; \ |
d1f652f8 MD |
1188 | __lf = lttng_rcu_dereference(__session->pid_tracker.p); \ |
1189 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, current->tgid))) \ | |
1190 | return; \ | |
1191 | __lf = lttng_rcu_dereference(__session->vpid_tracker.p); \ | |
1192 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, task_tgid_vnr(current)))) \ | |
1193 | return; \ | |
1194 | __lf = lttng_rcu_dereference(__session->uid_tracker.p); \ | |
1195 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1196 | lttng_current_uid()))) \ |
d1f652f8 MD |
1197 | return; \ |
1198 | __lf = lttng_rcu_dereference(__session->vuid_tracker.p); \ | |
1199 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1200 | lttng_current_vuid()))) \ |
d1f652f8 MD |
1201 | return; \ |
1202 | __lf = lttng_rcu_dereference(__session->gid_tracker.p); \ | |
1203 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1204 | lttng_current_gid()))) \ |
d1f652f8 MD |
1205 | return; \ |
1206 | __lf = lttng_rcu_dereference(__session->vgid_tracker.p); \ | |
1207 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1208 | lttng_current_vgid()))) \ |
e0130fab | 1209 | return; \ |
114667d5 MD |
1210 | __orig_dynamic_len_offset = this_cpu_ptr(<tng_dynamic_len_stack)->offset; \ |
1211 | __dynamic_len_idx = __orig_dynamic_len_offset; \ | |
265822ae | 1212 | _code_pre \ |
183e8b3a | 1213 | if (unlikely(!list_empty(&__event->filter_bytecode_runtime_head))) { \ |
f127e61e MD |
1214 | struct lttng_bytecode_runtime *bc_runtime; \ |
1215 | int __filter_record = __event->has_enablers_without_bytecode; \ | |
1216 | \ | |
99d223ad | 1217 | __event_prepare_interpreter_stack__##_name(__stackvar.__filter_stack_data, \ |
f127e61e | 1218 | tp_locvar); \ |
183e8b3a | 1219 | lttng_list_for_each_entry_rcu(bc_runtime, &__event->filter_bytecode_runtime_head, node) { \ |
3d650c7b | 1220 | if (unlikely(bc_runtime->interpreter_funcs.filter(bc_runtime, &__lttng_probe_ctx, \ |
80c2a69a | 1221 | __stackvar.__filter_stack_data) & LTTNG_INTERPRETER_RECORD_FLAG)) { \ |
f127e61e | 1222 | __filter_record = 1; \ |
8904bcfa FD |
1223 | break; \ |
1224 | } \ | |
f127e61e MD |
1225 | } \ |
1226 | if (likely(!__filter_record)) \ | |
265822ae | 1227 | goto __post; \ |
f127e61e | 1228 | } \ |
114667d5 MD |
1229 | __event_len = __event_get_size__##_name(tp_locvar); \ |
1230 | if (unlikely(__event_len < 0)) { \ | |
1231 | lib_ring_buffer_lost_event_too_big(__chan->chan); \ | |
1232 | goto __post; \ | |
1233 | } \ | |
7ca580f8 | 1234 | __event_align = __event_get_align__##_name(tp_locvar); \ |
79150a49 | 1235 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, &__lttng_probe_ctx, __event_len, \ |
f7bdf4db MD |
1236 | __event_align, -1); \ |
1237 | __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ | |
1238 | if (__ret < 0) \ | |
265822ae | 1239 | goto __post; \ |
f127e61e | 1240 | _fields \ |
f7bdf4db | 1241 | __chan->ops->event_commit(&__ctx); \ |
265822ae MD |
1242 | __post: \ |
1243 | _code_post \ | |
114667d5 MD |
1244 | barrier(); /* use before un-reserve. */ \ |
1245 | this_cpu_ptr(<tng_dynamic_len_stack)->offset = __orig_dynamic_len_offset; \ | |
265822ae | 1246 | return; \ |
f7bdf4db MD |
1247 | } |
1248 | ||
e763dbf5 MD |
1249 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
1250 | ||
f127e61e MD |
1251 | #undef __get_dynamic_len |
1252 | ||
7fad9b39 FD |
1253 | /* |
1254 | * Stage 6.1 of tracepoint generation: generate event notifier probes | |
1255 | * | |
1256 | * Create the probe function. This function evaluates the filter bytecode and | |
1257 | * queue a notification to be sent to userspace. | |
1258 | */ | |
1259 | ||
1260 | #include <lttng/events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ | |
1261 | ||
1262 | #undef TP_PROTO | |
1263 | #define TP_PROTO(...) __VA_ARGS__ | |
1264 | ||
1265 | #undef TP_ARGS | |
1266 | #define TP_ARGS(...) __VA_ARGS__ | |
1267 | ||
1268 | #undef TP_FIELDS | |
1269 | #define TP_FIELDS(...) __VA_ARGS__ | |
1270 | ||
1271 | #undef TP_locvar | |
1272 | #define TP_locvar(...) __VA_ARGS__ | |
1273 | ||
1274 | #undef TP_code_pre | |
1275 | #define TP_code_pre(...) __VA_ARGS__ | |
1276 | ||
1277 | #undef TP_code_post | |
1278 | #define TP_code_post(...) __VA_ARGS__ | |
1279 | ||
1280 | /* | |
1281 | * Using twice size for filter stack data to hold size and pointer for | |
1282 | * each field (worse case). For integers, max size required is 64-bit. | |
1283 | * Same for double-precision floats. Those fit within | |
1284 | * 2*sizeof(unsigned long) for all supported architectures. | |
1285 | * Perform UNION (||) of filter runtime list. | |
1286 | */ | |
1287 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE | |
1288 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ | |
1289 | static void __event_notifier_probe__##_name(void *__data, _proto) \ | |
1290 | { \ | |
1291 | struct probe_local_vars { _locvar }; \ | |
1292 | struct lttng_event_notifier *__event_notifier = __data; \ | |
1293 | struct lttng_probe_ctx __lttng_probe_ctx = { \ | |
1294 | .event = NULL, \ | |
1295 | .event_notifier = __event_notifier, \ | |
1296 | .interruptible = !irqs_disabled(), \ | |
1297 | }; \ | |
1298 | union { \ | |
1299 | size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)]; \ | |
99d223ad | 1300 | char __interpreter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \ |
7fad9b39 FD |
1301 | } __stackvar; \ |
1302 | struct probe_local_vars __tp_locvar; \ | |
1303 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
1304 | &__tp_locvar; \ | |
c3eddb2e MD |
1305 | struct lttng_kernel_notifier_ctx __notif_ctx; \ |
1306 | bool __interpreter_stack_prepared = false; \ | |
7fad9b39 FD |
1307 | \ |
1308 | if (unlikely(!READ_ONCE(__event_notifier->enabled))) \ | |
1309 | return; \ | |
1310 | _code_pre \ | |
183e8b3a | 1311 | if (unlikely(!list_empty(&__event_notifier->filter_bytecode_runtime_head))) { \ |
99d223ad | 1312 | struct lttng_bytecode_runtime *bc_runtime; \ |
7fad9b39 | 1313 | int __filter_record = __event_notifier->has_enablers_without_bytecode; \ |
99d223ad FD |
1314 | \ |
1315 | __event_prepare_interpreter_stack__##_name(__stackvar.__interpreter_stack_data, \ | |
1316 | tp_locvar, _args); \ | |
c3eddb2e | 1317 | __interpreter_stack_prepared = true; \ |
183e8b3a | 1318 | lttng_list_for_each_entry_rcu(bc_runtime, &__event_notifier->filter_bytecode_runtime_head, node) { \ |
99d223ad FD |
1319 | if (unlikely(bc_runtime->interpreter_funcs.filter(bc_runtime, &__lttng_probe_ctx, \ |
1320 | __stackvar.__interpreter_stack_data) & LTTNG_INTERPRETER_RECORD_FLAG)) \ | |
7fad9b39 FD |
1321 | __filter_record = 1; \ |
1322 | } \ | |
1323 | if (likely(!__filter_record)) \ | |
1324 | goto __post; \ | |
1325 | } \ | |
1326 | \ | |
c3eddb2e MD |
1327 | __notif_ctx.eval_capture = LTTNG_READ_ONCE(__event_notifier->eval_capture); \ |
1328 | if (unlikely(!__interpreter_stack_prepared && __notif_ctx.eval_capture)) \ | |
99d223ad FD |
1329 | __event_prepare_interpreter_stack__##_name( \ |
1330 | __stackvar.__interpreter_stack_data, \ | |
1331 | tp_locvar, _args); \ | |
1332 | \ | |
1333 | __event_notifier->send_notification(__event_notifier, \ | |
1334 | &__lttng_probe_ctx, \ | |
c3eddb2e MD |
1335 | __stackvar.__interpreter_stack_data, \ |
1336 | &__notif_ctx); \ | |
99d223ad | 1337 | \ |
7fad9b39 FD |
1338 | __post: \ |
1339 | _code_post \ | |
1340 | return; \ | |
1341 | } | |
1342 | ||
1343 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS | |
1344 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ | |
1345 | static void __event_notifier_probe__##_name(void *__data) \ | |
1346 | { \ | |
1347 | struct probe_local_vars { _locvar }; \ | |
1348 | struct lttng_event_notifier *__event_notifier = __data; \ | |
1349 | struct lttng_probe_ctx __lttng_probe_ctx = { \ | |
1350 | .event = NULL, \ | |
1351 | .event_notifier = __event_notifier, \ | |
1352 | .interruptible = !irqs_disabled(), \ | |
1353 | }; \ | |
1354 | union { \ | |
1355 | size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)]; \ | |
99d223ad | 1356 | char __interpreter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \ |
7fad9b39 FD |
1357 | } __stackvar; \ |
1358 | struct probe_local_vars __tp_locvar; \ | |
1359 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
1360 | &__tp_locvar; \ | |
c3eddb2e MD |
1361 | struct lttng_kernel_notifier_ctx __notif_ctx; \ |
1362 | bool __interpreter_stack_prepared = false; \ | |
7fad9b39 FD |
1363 | \ |
1364 | if (unlikely(!READ_ONCE(__event_notifier->enabled))) \ | |
1365 | return; \ | |
1366 | _code_pre \ | |
99d223ad FD |
1367 | if (unlikely(!list_empty(&__event_notifier->filter_bytecode_runtime_head))) { \ |
1368 | struct lttng_bytecode_runtime *bc_runtime; \ | |
1369 | int __filter_record = __event_notifier->has_enablers_without_bytecode; \ | |
1370 | \ | |
1371 | __event_prepare_interpreter_stack__##_name(__stackvar.__interpreter_stack_data, \ | |
1372 | tp_locvar); \ | |
c3eddb2e | 1373 | __interpreter_stack_prepared = true; \ |
183e8b3a | 1374 | lttng_list_for_each_entry_rcu(bc_runtime, &__event_notifier->filter_bytecode_runtime_head, node) { \ |
99d223ad FD |
1375 | if (unlikely(bc_runtime->interpreter_funcs.filter(bc_runtime, &__lttng_probe_ctx, \ |
1376 | __stackvar.__interpreter_stack_data) & LTTNG_INTERPRETER_RECORD_FLAG)) \ | |
7fad9b39 FD |
1377 | __filter_record = 1; \ |
1378 | } \ | |
1379 | if (likely(!__filter_record)) \ | |
1380 | goto __post; \ | |
1381 | } \ | |
1382 | \ | |
c3eddb2e MD |
1383 | __notif_ctx.eval_capture = LTTNG_READ_ONCE(__event_notifier->eval_capture); \ |
1384 | if (unlikely(!__interpreter_stack_prepared && __notif_ctx.eval_capture)) \ | |
99d223ad FD |
1385 | __event_prepare_interpreter_stack__##_name( \ |
1386 | __stackvar.__interpreter_stack_data, \ | |
1387 | tp_locvar); \ | |
1388 | \ | |
1389 | __event_notifier->send_notification(__event_notifier, \ | |
1390 | &__lttng_probe_ctx, \ | |
c3eddb2e MD |
1391 | __stackvar.__interpreter_stack_data, \ |
1392 | &__notif_ctx); \ | |
7fad9b39 FD |
1393 | __post: \ |
1394 | _code_post \ | |
1395 | return; \ | |
1396 | } | |
1397 | ||
1398 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
f127e61e MD |
1399 | /* |
1400 | * Stage 7 of the trace events. | |
1401 | * | |
1402 | * Create event descriptions. | |
1403 | */ | |
1404 | ||
1405 | /* Named field types must be defined in lttng-types.h */ | |
1406 | ||
3b4aafcb | 1407 | #include <lttng/events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
f127e61e MD |
1408 | |
1409 | #ifndef TP_PROBE_CB | |
1410 | #define TP_PROBE_CB(_template) &__event_probe__##_template | |
1411 | #endif | |
1412 | ||
7fad9b39 FD |
1413 | #ifndef TP_EVENT_NOTIFIER_PROBE_CB |
1414 | #define TP_EVENT_NOTIFIER_PROBE_CB(_template) &__event_notifier_probe__##_template | |
1415 | #endif | |
1416 | ||
f127e61e MD |
1417 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS |
1418 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
437d5aa5 MD |
1419 | static const struct lttng_kernel_event_desc __event_desc___##_map = { \ |
1420 | .event_name = #_map, \ | |
1421 | .event_kname = #_name, \ | |
1422 | .probe_callback = (void *) TP_PROBE_CB(_template), \ | |
f127e61e | 1423 | .fields = __event_fields___##_template, \ |
f127e61e MD |
1424 | .nr_fields = ARRAY_SIZE(__event_fields___##_template), \ |
1425 | .owner = THIS_MODULE, \ | |
437d5aa5 | 1426 | .event_notifier_callback = (void *) TP_EVENT_NOTIFIER_PROBE_CB(_template), \ |
f127e61e MD |
1427 | }; |
1428 | ||
1429 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
1430 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
1431 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) | |
1432 | ||
1433 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
1434 | ||
1435 | /* | |
1436 | * Stage 8 of the trace events. | |
1437 | * | |
1438 | * Create an array of event description pointers. | |
1439 | */ | |
1440 | ||
3b4aafcb | 1441 | #include <lttng/events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
f127e61e MD |
1442 | |
1443 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
1444 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
1445 | &__event_desc___##_map, | |
1446 | ||
1447 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
1448 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
1449 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) | |
1450 | ||
1451 | #define TP_ID1(_token, _system) _token##_system | |
1452 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1453 | ||
437d5aa5 | 1454 | static const struct lttng_kernel_event_desc *TP_ID(__event_desc___, TRACE_SYSTEM)[] = { |
f127e61e MD |
1455 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
1456 | }; | |
1457 | ||
1458 | #undef TP_ID1 | |
1459 | #undef TP_ID | |
1460 | ||
1461 | /* | |
1462 | * Stage 9 of the trace events. | |
1463 | * | |
1464 | * Create a toplevel descriptor for the whole probe. | |
1465 | */ | |
1466 | ||
1467 | #define TP_ID1(_token, _system) _token##_system | |
1468 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1469 | ||
1470 | /* non-const because list head will be modified when registered. */ | |
437d5aa5 MD |
1471 | static __used struct lttng_kernel_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = { |
1472 | .provider_name = __stringify(TRACE_SYSTEM), | |
f127e61e MD |
1473 | .event_desc = TP_ID(__event_desc___, TRACE_SYSTEM), |
1474 | .nr_events = ARRAY_SIZE(TP_ID(__event_desc___, TRACE_SYSTEM)), | |
1475 | .head = { NULL, NULL }, | |
1476 | .lazy_init_head = { NULL, NULL }, | |
1477 | .lazy = 0, | |
1478 | }; | |
1479 | ||
1480 | #undef TP_ID1 | |
1481 | #undef TP_ID | |
1482 | ||
3afe7aac | 1483 | /* |
c099397a | 1484 | * Stage 10 of the trace events. |
3afe7aac MD |
1485 | * |
1486 | * Register/unregister probes at module load/unload. | |
1487 | */ | |
1488 | ||
3b4aafcb | 1489 | #include <lttng/events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
3afe7aac MD |
1490 | |
1491 | #define TP_ID1(_token, _system) _token##_system | |
1492 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1493 | #define module_init_eval1(_token, _system) module_init(_token##_system) | |
1494 | #define module_init_eval(_token, _system) module_init_eval1(_token, _system) | |
1495 | #define module_exit_eval1(_token, _system) module_exit(_token##_system) | |
1496 | #define module_exit_eval(_token, _system) module_exit_eval1(_token, _system) | |
1497 | ||
2655f9ad | 1498 | #ifndef TP_MODULE_NOINIT |
3afe7aac MD |
1499 | static int TP_ID(__lttng_events_init__, TRACE_SYSTEM)(void) |
1500 | { | |
263b6c88 | 1501 | wrapper_vmalloc_sync_mappings(); |
a90917c3 | 1502 | return lttng_probe_register(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
1503 | } |
1504 | ||
3afe7aac MD |
1505 | static void TP_ID(__lttng_events_exit__, TRACE_SYSTEM)(void) |
1506 | { | |
a90917c3 | 1507 | lttng_probe_unregister(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
1508 | } |
1509 | ||
2655f9ad MD |
1510 | #ifndef TP_MODULE_NOAUTOLOAD |
1511 | module_init_eval(__lttng_events_init__, TRACE_SYSTEM); | |
3afe7aac | 1512 | module_exit_eval(__lttng_events_exit__, TRACE_SYSTEM); |
259b6cb3 | 1513 | #endif |
3afe7aac | 1514 | |
2655f9ad MD |
1515 | #endif |
1516 | ||
3afe7aac MD |
1517 | #undef module_init_eval |
1518 | #undef module_exit_eval | |
1519 | #undef TP_ID1 | |
1520 | #undef TP_ID | |
177b3692 MD |
1521 | |
1522 | #undef TP_PROTO | |
1523 | #undef TP_ARGS |