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> | |
a67ba386 | 23 | #include <lttng/events-internal.h> /* TODO: remove this include after refactoring is done. */ |
2df37e95 MD |
24 | #include <lttng/tracer-core.h> |
25 | #include <lttng/tp-mempool.h> | |
40652b65 | 26 | |
1d84e8e7 MD |
27 | #define __LTTNG_NULL_STRING "(null)" |
28 | ||
3b4aafcb MD |
29 | #undef PARAMS |
30 | #define PARAMS(args...) args | |
31 | ||
40652b65 | 32 | /* |
6db3d13b | 33 | * Macro declarations used for all stages. |
40652b65 MD |
34 | */ |
35 | ||
76e4f017 MD |
36 | /* |
37 | * LTTng name mapping macros. LTTng remaps some of the kernel events to | |
38 | * enforce name-spacing. | |
39 | */ | |
3bc29f0a | 40 | #undef LTTNG_TRACEPOINT_EVENT_MAP |
f127e61e | 41 | #define LTTNG_TRACEPOINT_EVENT_MAP(name, map, proto, args, fields) \ |
3bc29f0a | 42 | LTTNG_TRACEPOINT_EVENT_CLASS(map, \ |
76e4f017 MD |
43 | PARAMS(proto), \ |
44 | PARAMS(args), \ | |
f127e61e | 45 | PARAMS(fields)) \ |
3bc29f0a | 46 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(map, name, map, PARAMS(proto), PARAMS(args)) |
76e4f017 | 47 | |
3bc29f0a | 48 | #undef LTTNG_TRACEPOINT_EVENT_MAP_NOARGS |
f127e61e | 49 | #define LTTNG_TRACEPOINT_EVENT_MAP_NOARGS(name, map, fields) \ |
3bc29f0a | 50 | LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(map, \ |
f127e61e | 51 | PARAMS(fields)) \ |
3bc29f0a | 52 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(map, name, map) |
76e4f017 | 53 | |
f127e61e | 54 | #undef LTTNG_TRACEPOINT_EVENT_CODE_MAP |
265822ae | 55 | #define LTTNG_TRACEPOINT_EVENT_CODE_MAP(name, map, proto, args, _locvar, _code_pre, fields, _code_post) \ |
f127e61e MD |
56 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE(map, \ |
57 | PARAMS(proto), \ | |
58 | PARAMS(args), \ | |
59 | PARAMS(_locvar), \ | |
265822ae MD |
60 | PARAMS(_code_pre), \ |
61 | PARAMS(fields), \ | |
62 | PARAMS(_code_post)) \ | |
f127e61e MD |
63 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(map, name, map, PARAMS(proto), PARAMS(args)) |
64 | ||
3bc29f0a | 65 | #undef LTTNG_TRACEPOINT_EVENT_CODE |
265822ae | 66 | #define LTTNG_TRACEPOINT_EVENT_CODE(name, proto, args, _locvar, _code_pre, fields, _code_post) \ |
f127e61e | 67 | LTTNG_TRACEPOINT_EVENT_CODE_MAP(name, name, \ |
7ca580f8 MD |
68 | PARAMS(proto), \ |
69 | PARAMS(args), \ | |
70 | PARAMS(_locvar), \ | |
265822ae MD |
71 | PARAMS(_code_pre), \ |
72 | PARAMS(fields), \ | |
73 | PARAMS(_code_post)) | |
fcf7fa33 | 74 | |
40652b65 | 75 | /* |
3bc29f0a MD |
76 | * LTTNG_TRACEPOINT_EVENT_CLASS can be used to add a generic function |
77 | * handlers for events. That is, if all events have the same parameters | |
78 | * and just have distinct trace points. Each tracepoint can be defined | |
79 | * with LTTNG_TRACEPOINT_EVENT_INSTANCE and that will map the | |
80 | * LTTNG_TRACEPOINT_EVENT_CLASS to the tracepoint. | |
40652b65 | 81 | * |
3bc29f0a MD |
82 | * LTTNG_TRACEPOINT_EVENT is a one to one mapping between tracepoint and |
83 | * template. | |
40652b65 | 84 | */ |
6db3d13b | 85 | |
3bc29f0a | 86 | #undef LTTNG_TRACEPOINT_EVENT |
f127e61e | 87 | #define LTTNG_TRACEPOINT_EVENT(name, proto, args, fields) \ |
3bc29f0a MD |
88 | LTTNG_TRACEPOINT_EVENT_MAP(name, name, \ |
89 | PARAMS(proto), \ | |
90 | PARAMS(args), \ | |
f127e61e | 91 | PARAMS(fields)) |
40652b65 | 92 | |
3bc29f0a | 93 | #undef LTTNG_TRACEPOINT_EVENT_NOARGS |
f127e61e MD |
94 | #define LTTNG_TRACEPOINT_EVENT_NOARGS(name, fields) \ |
95 | LTTNG_TRACEPOINT_EVENT_MAP_NOARGS(name, name, PARAMS(fields)) | |
76e4f017 | 96 | |
3bc29f0a MD |
97 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE |
98 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE(template, name, proto, args) \ | |
99 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(template, name, name, PARAMS(proto), PARAMS(args)) | |
76e4f017 | 100 | |
3bc29f0a MD |
101 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS |
102 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(template, name) \ | |
103 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(template, name, name) | |
76e4f017 | 104 | |
3bc29f0a | 105 | #undef LTTNG_TRACEPOINT_EVENT_CLASS |
f127e61e | 106 | #define LTTNG_TRACEPOINT_EVENT_CLASS(_name, _proto, _args, _fields) \ |
3bc29f0a | 107 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, PARAMS(_proto), PARAMS(_args), , , \ |
265822ae | 108 | PARAMS(_fields), ) |
7ca580f8 | 109 | |
3bc29f0a | 110 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS |
f127e61e | 111 | #define LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(_name, _fields) \ |
265822ae | 112 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, , , PARAMS(_fields), ) |
7ca580f8 MD |
113 | |
114 | ||
f62b389e | 115 | /* |
c099397a | 116 | * Stage 1 of the trace events. |
f62b389e MD |
117 | * |
118 | * Create dummy trace calls for each events, verifying that the LTTng module | |
3bc29f0a MD |
119 | * instrumentation headers match the kernel arguments. Will be optimized |
120 | * out by the compiler. | |
f62b389e MD |
121 | */ |
122 | ||
f127e61e | 123 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb | 124 | #include <lttng/events-reset.h> |
f62b389e MD |
125 | |
126 | #undef TP_PROTO | |
f127e61e | 127 | #define TP_PROTO(...) __VA_ARGS__ |
f62b389e MD |
128 | |
129 | #undef TP_ARGS | |
f127e61e | 130 | #define TP_ARGS(...) __VA_ARGS__ |
f62b389e | 131 | |
3bc29f0a MD |
132 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP |
133 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
7eb827f2 | 134 | void trace_##_name(_proto); |
f62b389e | 135 | |
3bc29f0a MD |
136 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS |
137 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
cb1aa0c7 | 138 | void trace_##_name(void); |
f7bdf4db | 139 | |
f62b389e MD |
140 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
141 | ||
d0558de2 MD |
142 | /* |
143 | * Stage 1.1 of the trace events. | |
144 | * | |
145 | * Create dummy trace prototypes for each event class, and for each used | |
146 | * template. This will allow checking whether the prototypes from the | |
147 | * class and the instance using the class actually match. | |
148 | */ | |
149 | ||
3b4aafcb | 150 | #include <lttng/events-reset.h> /* Reset all macros within TRACE_EVENT */ |
d0558de2 MD |
151 | |
152 | #undef TP_PROTO | |
153 | #define TP_PROTO(...) __VA_ARGS__ | |
154 | ||
155 | #undef TP_ARGS | |
156 | #define TP_ARGS(...) __VA_ARGS__ | |
157 | ||
158 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
159 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
160 | void __event_template_proto___##_template(_proto); | |
161 | ||
162 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
163 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
164 | void __event_template_proto___##_template(void); | |
165 | ||
166 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE | |
265822ae | 167 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
d0558de2 MD |
168 | void __event_template_proto___##_name(_proto); |
169 | ||
170 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS | |
265822ae | 171 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
d0558de2 MD |
172 | void __event_template_proto___##_name(void); |
173 | ||
174 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
175 | ||
7fad9b39 FD |
176 | /* |
177 | * Stage 1.2 of the trace event_notifier. | |
178 | * | |
179 | * Create dummy trace prototypes for each event class, and for each used | |
180 | * template. This will allow checking whether the prototypes from the | |
181 | * class and the instance using the class actually match. | |
182 | */ | |
183 | ||
184 | #include <lttng/events-reset.h> /* Reset all macros within TRACE_EVENT */ | |
185 | ||
186 | #undef TP_PROTO | |
187 | #define TP_PROTO(...) __VA_ARGS__ | |
188 | ||
189 | #undef TP_ARGS | |
190 | #define TP_ARGS(...) __VA_ARGS__ | |
191 | ||
192 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
193 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
194 | void __event_notifier_template_proto___##_template(_proto); | |
195 | ||
196 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
197 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
198 | void __event_notifier_template_proto___##_template(void); | |
199 | ||
200 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE | |
201 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ | |
202 | void __event_notifier_template_proto___##_name(_proto); | |
203 | ||
204 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS | |
205 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ | |
206 | void __event_notifier_template_proto___##_name(void); | |
207 | ||
208 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
209 | ||
210 | ||
141ddf28 MD |
211 | /* |
212 | * Stage 1.2 of tracepoint event generation | |
213 | * | |
214 | * Unfolding the enums | |
215 | */ | |
3b4aafcb | 216 | #include <lttng/events-reset.h> /* Reset all macros within TRACE_EVENT */ |
141ddf28 MD |
217 | |
218 | /* Enumeration entry (single value) */ | |
219 | #undef ctf_enum_value | |
220 | #define ctf_enum_value(_string, _value) \ | |
437d5aa5 | 221 | lttng_kernel_static_enum_entry_value(_string, _value) |
141ddf28 MD |
222 | |
223 | /* Enumeration entry (range) */ | |
224 | #undef ctf_enum_range | |
225 | #define ctf_enum_range(_string, _range_start, _range_end) \ | |
437d5aa5 | 226 | lttng_kernel_static_enum_entry_range(_string, _range_start, _range_end) |
141ddf28 | 227 | |
08ad1061 PP |
228 | /* Enumeration entry (automatic value; follows the rules of CTF) */ |
229 | #undef ctf_enum_auto | |
437d5aa5 MD |
230 | #define ctf_enum_auto(_string) \ |
231 | lttng_kernel_static_enum_entry_auto(_string) | |
08ad1061 | 232 | |
141ddf28 MD |
233 | #undef TP_ENUM_VALUES |
234 | #define TP_ENUM_VALUES(...) \ | |
235 | __VA_ARGS__ | |
236 | ||
237 | #undef LTTNG_TRACEPOINT_ENUM | |
238 | #define LTTNG_TRACEPOINT_ENUM(_name, _values) \ | |
437d5aa5 | 239 | static const struct lttng_kernel_enum_entry *__enum_values__##_name[] = { \ |
141ddf28 MD |
240 | _values \ |
241 | }; | |
242 | ||
243 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
244 | ||
6db3d13b | 245 | /* |
c099397a | 246 | * Stage 2 of the trace events. |
6db3d13b MD |
247 | * |
248 | * Create event field type metadata section. | |
249 | * Each event produce an array of fields. | |
250 | */ | |
251 | ||
f127e61e | 252 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb MD |
253 | #include <lttng/events-reset.h> |
254 | #include <lttng/events-write.h> | |
255 | #include <lttng/events-nowrite.h> | |
6db3d13b | 256 | |
f127e61e | 257 | #undef _ctf_integer_ext |
437d5aa5 MD |
258 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ |
259 | lttng_kernel_static_event_field(#_item, \ | |
260 | lttng_kernel_static_type_integer_from_type(_type, _byte_order, _base), \ | |
261 | _nowrite, _user, 0), | |
40652b65 | 262 | |
f127e61e | 263 | #undef _ctf_array_encoded |
ceabb767 MD |
264 | #define _ctf_array_encoded(_type, _item, _src, _length, \ |
265 | _encoding, _byte_order, _elem_type_base, _user, _nowrite) \ | |
437d5aa5 MD |
266 | lttng_kernel_static_event_field(#_item, \ |
267 | lttng_kernel_static_type_array(_length, \ | |
268 | lttng_kernel_static_type_integer_from_type(_type, _byte_order, _elem_type_base), \ | |
269 | 0, \ | |
270 | _encoding), \ | |
271 | _nowrite, _user, 0), | |
40652b65 | 272 | |
43803cf2 MD |
273 | #undef _ctf_array_bitfield |
274 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
437d5aa5 MD |
275 | lttng_kernel_static_event_field(#_item, \ |
276 | lttng_kernel_static_type_array((_length) * sizeof(_type) * CHAR_BIT, \ | |
277 | lttng_kernel_static_type_integer(1, 1, 0, __LITTLE_ENDIAN, 10), \ | |
278 | lttng_alignof(_type), \ | |
279 | none), \ | |
280 | _nowrite, _user, 0), | |
43803cf2 | 281 | |
f127e61e MD |
282 | #undef _ctf_sequence_encoded |
283 | #define _ctf_sequence_encoded(_type, _item, _src, \ | |
284 | _length_type, _src_length, _encoding, \ | |
ceabb767 | 285 | _byte_order, _elem_type_base, _user, _nowrite) \ |
437d5aa5 MD |
286 | lttng_kernel_static_event_field("_" #_item "_length", \ |
287 | lttng_kernel_static_type_integer_from_type(_length_type, __BYTE_ORDER, 10), \ | |
288 | _nowrite, 0, 1), \ | |
289 | lttng_kernel_static_event_field(#_item, \ | |
290 | lttng_kernel_static_type_sequence("_" #_item "_length", \ | |
291 | lttng_kernel_static_type_integer_from_type(_type, _byte_order, _elem_type_base), \ | |
292 | 0, \ | |
293 | _encoding), \ | |
294 | _nowrite, _user, 0), | |
43803cf2 MD |
295 | |
296 | #undef _ctf_sequence_bitfield | |
297 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
298 | _length_type, _src_length, \ | |
299 | _user, _nowrite) \ | |
437d5aa5 MD |
300 | lttng_kernel_static_event_field("_" #_item "_length", \ |
301 | lttng_kernel_static_type_integer_from_type(_length_type, __BYTE_ORDER, 10), \ | |
302 | _nowrite, 0, 1), \ | |
303 | lttng_kernel_static_event_field(#_item, \ | |
304 | lttng_kernel_static_type_sequence("_" #_item "_length", \ | |
305 | lttng_kernel_static_type_integer(1, 1, 0, __LITTLE_ENDIAN, 10), \ | |
306 | lttng_alignof(_type), \ | |
307 | none), \ | |
308 | _nowrite, _user, 0), | |
40652b65 | 309 | |
f127e61e MD |
310 | #undef _ctf_string |
311 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
437d5aa5 MD |
312 | lttng_kernel_static_event_field(#_item, \ |
313 | lttng_kernel_static_type_string(UTF8), \ | |
314 | _nowrite, _user, 0), | |
315 | ||
316 | #undef _ctf_unused | |
317 | #define _ctf_unused(_src) | |
1d12cebd | 318 | |
141ddf28 MD |
319 | #undef _ctf_enum |
320 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
437d5aa5 MD |
321 | lttng_kernel_static_event_field(#_item, \ |
322 | lttng_kernel_static_type_enum(&__enum_##_name, \ | |
323 | lttng_kernel_static_type_integer_from_type(_type, __BYTE_ORDER, 10)), \ | |
324 | _nowrite, _user, 0), | |
f64dd4be MD |
325 | |
326 | #undef ctf_custom_field | |
327 | #define ctf_custom_field(_type, _item, _code) \ | |
437d5aa5 | 328 | lttng_kernel_static_event_field(#_item, PARAMS(_type), 0, 0, 1), |
f64dd4be MD |
329 | |
330 | #undef ctf_custom_type | |
331 | #define ctf_custom_type(...) __VA_ARGS__ | |
332 | ||
f127e61e MD |
333 | #undef TP_FIELDS |
334 | #define TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */ | |
1d12cebd | 335 | |
3bc29f0a | 336 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 337 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
437d5aa5 | 338 | static const struct lttng_kernel_event_field *__event_fields___##_name[] = { \ |
f127e61e | 339 | _fields \ |
299338c8 MD |
340 | }; |
341 | ||
3bc29f0a | 342 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae MD |
343 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
344 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, PARAMS(_fields), _code_post) | |
f7bdf4db | 345 | |
141ddf28 MD |
346 | #undef LTTNG_TRACEPOINT_ENUM |
347 | #define LTTNG_TRACEPOINT_ENUM(_name, _values) \ | |
d96a4a7a | 348 | static const struct lttng_kernel_enum_desc __enum_##_name = { \ |
141ddf28 MD |
349 | .name = #_name, \ |
350 | .entries = __enum_values__##_name, \ | |
351 | .nr_entries = ARRAY_SIZE(__enum_values__##_name), \ | |
352 | }; | |
353 | ||
437d5aa5 | 354 | #define LTTNG_CREATE_FIELD_METADATA |
299338c8 | 355 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
437d5aa5 | 356 | #undef LTTNG_CREATE_FIELD_METADATA |
299338c8 | 357 | |
19c57fbf | 358 | /* |
c099397a | 359 | * Stage 3 of the trace events. |
19c57fbf MD |
360 | * |
361 | * Create probe callback prototypes. | |
362 | */ | |
363 | ||
f127e61e | 364 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb | 365 | #include <lttng/events-reset.h> |
19c57fbf MD |
366 | |
367 | #undef TP_PROTO | |
f127e61e | 368 | #define TP_PROTO(...) __VA_ARGS__ |
19c57fbf | 369 | |
3bc29f0a | 370 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 371 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
19c57fbf MD |
372 | static void __event_probe__##_name(void *__data, _proto); |
373 | ||
3bc29f0a | 374 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 375 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f7bdf4db MD |
376 | static void __event_probe__##_name(void *__data); |
377 | ||
19c57fbf MD |
378 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
379 | ||
7fad9b39 FD |
380 | /* |
381 | * Stage 3.1 of the trace event_notifiers. | |
382 | * | |
383 | * Create event_notifier probe callback prototypes. | |
384 | */ | |
385 | ||
386 | /* Reset all macros within TRACEPOINT_EVENT */ | |
387 | #include <lttng/events-reset.h> | |
388 | ||
389 | #undef TP_PROTO | |
390 | #define TP_PROTO(...) __VA_ARGS__ | |
391 | ||
392 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE | |
393 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ | |
394 | static void __event_notifier_probe__##_name(void *__data, _proto); | |
395 | ||
396 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS | |
397 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ | |
398 | static void __event_notifier_probe__##_name(void *__data); | |
399 | ||
400 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
401 | ||
f7bdf4db MD |
402 | /* |
403 | * Stage 4 of the trace events. | |
404 | * | |
40652b65 MD |
405 | * Create static inline function that calculates event size. |
406 | */ | |
407 | ||
f127e61e | 408 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb MD |
409 | #include <lttng/events-reset.h> |
410 | #include <lttng/events-write.h> | |
6db3d13b | 411 | |
f127e61e MD |
412 | #undef _ctf_integer_ext |
413 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ | |
a90917c3 | 414 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
0d1d4002 | 415 | __event_len += sizeof(_type); |
6db3d13b | 416 | |
f127e61e | 417 | #undef _ctf_array_encoded |
3834b99f | 418 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
a90917c3 | 419 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
0d1d4002 | 420 | __event_len += sizeof(_type) * (_length); |
6db3d13b | 421 | |
43803cf2 MD |
422 | #undef _ctf_array_bitfield |
423 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
3834b99f | 424 | _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite) |
43803cf2 | 425 | |
f127e61e MD |
426 | #undef _ctf_sequence_encoded |
427 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 428 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
429 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_length_type)); \ |
430 | __event_len += sizeof(_length_type); \ | |
a90917c3 | 431 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
114667d5 MD |
432 | { \ |
433 | size_t __seqlen = (_src_length); \ | |
434 | \ | |
435 | if (unlikely(++this_cpu_ptr(<tng_dynamic_len_stack)->offset >= LTTNG_DYNAMIC_LEN_STACK_SIZE)) \ | |
436 | goto error; \ | |
437 | barrier(); /* reserve before use. */ \ | |
438 | this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = __seqlen; \ | |
439 | __event_len += sizeof(_type) * __seqlen; \ | |
440 | } | |
6db3d13b | 441 | |
43803cf2 MD |
442 | #undef _ctf_sequence_bitfield |
443 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
444 | _length_type, _src_length, \ | |
445 | _user, _nowrite) \ | |
446 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
447 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
448 | ||
d0255731 | 449 | /* |
f127e61e | 450 | * ctf_user_string includes \0. If returns 0, it faulted, so we set size to |
786b8312 | 451 | * 1 (\0 only). |
d0255731 | 452 | */ |
f127e61e MD |
453 | #undef _ctf_string |
454 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
114667d5 MD |
455 | if (unlikely(++this_cpu_ptr(<tng_dynamic_len_stack)->offset >= LTTNG_DYNAMIC_LEN_STACK_SIZE)) \ |
456 | goto error; \ | |
457 | barrier(); /* reserve before use. */ \ | |
458 | if (_user) { \ | |
459 | __event_len += this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = \ | |
96d0248a | 460 | max_t(size_t, lttng_strlen_user_inatomic(_src), 1); \ |
114667d5 MD |
461 | } else { \ |
462 | __event_len += this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = \ | |
1d84e8e7 | 463 | strlen((_src) ? (_src) : __LTTNG_NULL_STRING) + 1; \ |
114667d5 | 464 | } |
c6e3f225 | 465 | |
141ddf28 MD |
466 | #undef _ctf_enum |
467 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
468 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
469 | ||
f64dd4be MD |
470 | #undef ctf_align |
471 | #define ctf_align(_type) \ | |
472 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); | |
473 | ||
474 | #undef ctf_custom_field | |
475 | #define ctf_custom_field(_type, _item, _code) \ | |
476 | { \ | |
477 | _code \ | |
478 | } | |
479 | ||
480 | #undef ctf_custom_code | |
481 | #define ctf_custom_code(...) __VA_ARGS__ | |
482 | ||
0d1d4002 | 483 | #undef TP_PROTO |
f127e61e | 484 | #define TP_PROTO(...) __VA_ARGS__ |
6db3d13b | 485 | |
f127e61e MD |
486 | #undef TP_FIELDS |
487 | #define TP_FIELDS(...) __VA_ARGS__ | |
6db3d13b | 488 | |
7ca580f8 MD |
489 | #undef TP_locvar |
490 | #define TP_locvar(...) __VA_ARGS__ | |
491 | ||
3bc29f0a | 492 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 493 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
114667d5 | 494 | static inline ssize_t __event_get_size__##_name(void *__tp_locvar, _proto) \ |
0d1d4002 MD |
495 | { \ |
496 | size_t __event_len = 0; \ | |
d3de7f14 | 497 | unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \ |
7ca580f8 | 498 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
d3de7f14 | 499 | \ |
f127e61e | 500 | _fields \ |
d3de7f14 | 501 | return __event_len; \ |
114667d5 MD |
502 | \ |
503 | error: \ | |
504 | __attribute__((unused)); \ | |
505 | return -1; \ | |
d3de7f14 MD |
506 | } |
507 | ||
3bc29f0a | 508 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 509 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
114667d5 | 510 | static inline ssize_t __event_get_size__##_name(void *__tp_locvar) \ |
d3de7f14 MD |
511 | { \ |
512 | size_t __event_len = 0; \ | |
513 | unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \ | |
7ca580f8 | 514 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
0d1d4002 | 515 | \ |
f127e61e | 516 | _fields \ |
0d1d4002 | 517 | return __event_len; \ |
114667d5 MD |
518 | \ |
519 | error: \ | |
520 | __attribute__((unused)); \ | |
521 | return -1; \ | |
6db3d13b | 522 | } |
40652b65 MD |
523 | |
524 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
525 | ||
f127e61e | 526 | |
40652b65 | 527 | /* |
f127e61e | 528 | * Stage 4.1 of tracepoint event generation. |
e763dbf5 | 529 | * |
f127e61e MD |
530 | * Create static inline function that layout the filter stack data. |
531 | * We make both write and nowrite data available to the filter. | |
e763dbf5 MD |
532 | */ |
533 | ||
f127e61e | 534 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb MD |
535 | #include <lttng/events-reset.h> |
536 | #include <lttng/events-write.h> | |
537 | #include <lttng/events-nowrite.h> | |
f127e61e MD |
538 | |
539 | #undef _ctf_integer_ext_fetched | |
540 | #define _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
541 | if (lttng_is_signed_type(_type)) { \ | |
542 | int64_t __ctf_tmp_int64; \ | |
543 | switch (sizeof(_type)) { \ | |
544 | case 1: \ | |
545 | { \ | |
546 | union { _type t; int8_t v; } __tmp = { (_type) (_src) }; \ | |
547 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ | |
548 | break; \ | |
549 | } \ | |
550 | case 2: \ | |
551 | { \ | |
552 | union { _type t; int16_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
553 | if (_byte_order != __BYTE_ORDER) \ |
554 | __swab16s(&__tmp.v); \ | |
f127e61e MD |
555 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
556 | break; \ | |
557 | } \ | |
558 | case 4: \ | |
559 | { \ | |
560 | union { _type t; int32_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
561 | if (_byte_order != __BYTE_ORDER) \ |
562 | __swab32s(&__tmp.v); \ | |
f127e61e MD |
563 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
564 | break; \ | |
565 | } \ | |
566 | case 8: \ | |
567 | { \ | |
568 | union { _type t; int64_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
569 | if (_byte_order != __BYTE_ORDER) \ |
570 | __swab64s(&__tmp.v); \ | |
f127e61e MD |
571 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
572 | break; \ | |
573 | } \ | |
574 | default: \ | |
575 | BUG_ON(1); \ | |
576 | }; \ | |
577 | memcpy(__stack_data, &__ctf_tmp_int64, sizeof(int64_t)); \ | |
578 | } else { \ | |
579 | uint64_t __ctf_tmp_uint64; \ | |
580 | switch (sizeof(_type)) { \ | |
581 | case 1: \ | |
582 | { \ | |
583 | union { _type t; uint8_t v; } __tmp = { (_type) (_src) }; \ | |
584 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ | |
585 | break; \ | |
586 | } \ | |
587 | case 2: \ | |
588 | { \ | |
589 | union { _type t; uint16_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
590 | if (_byte_order != __BYTE_ORDER) \ |
591 | __swab16s(&__tmp.v); \ | |
f127e61e MD |
592 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
593 | break; \ | |
594 | } \ | |
595 | case 4: \ | |
596 | { \ | |
597 | union { _type t; uint32_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
598 | if (_byte_order != __BYTE_ORDER) \ |
599 | __swab32s(&__tmp.v); \ | |
f127e61e MD |
600 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
601 | break; \ | |
602 | } \ | |
603 | case 8: \ | |
604 | { \ | |
605 | union { _type t; uint64_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
606 | if (_byte_order != __BYTE_ORDER) \ |
607 | __swab64s(&__tmp.v); \ | |
f127e61e MD |
608 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
609 | break; \ | |
610 | } \ | |
611 | default: \ | |
612 | BUG_ON(1); \ | |
613 | }; \ | |
614 | memcpy(__stack_data, &__ctf_tmp_uint64, sizeof(uint64_t)); \ | |
615 | } \ | |
616 | __stack_data += sizeof(int64_t); | |
617 | ||
618 | #undef _ctf_integer_ext_isuser0 | |
619 | #define _ctf_integer_ext_isuser0(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
620 | _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) | |
621 | ||
622 | #undef _ctf_integer_ext_isuser1 | |
623 | #define _ctf_integer_ext_isuser1(_type, _item, _user_src, _byte_order, _base, _nowrite) \ | |
3c8ebbc8 MD |
624 | { \ |
625 | union { \ | |
626 | char __array[sizeof(_user_src)]; \ | |
627 | __typeof__(_user_src) __v; \ | |
628 | } __tmp_fetch; \ | |
629 | if (lib_ring_buffer_copy_from_user_check_nofault(__tmp_fetch.__array, \ | |
630 | &(_user_src), sizeof(_user_src))) \ | |
631 | memset(__tmp_fetch.__array, 0, sizeof(__tmp_fetch.__array)); \ | |
632 | _ctf_integer_ext_fetched(_type, _item, __tmp_fetch.__v, _byte_order, _base, _nowrite) \ | |
f127e61e | 633 | } |
e763dbf5 | 634 | |
f127e61e MD |
635 | #undef _ctf_integer_ext |
636 | #define _ctf_integer_ext(_type, _item, _user_src, _byte_order, _base, _user, _nowrite) \ | |
637 | _ctf_integer_ext_isuser##_user(_type, _item, _user_src, _byte_order, _base, _nowrite) | |
638 | ||
639 | #undef _ctf_array_encoded | |
3834b99f | 640 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
641 | { \ |
642 | unsigned long __ctf_tmp_ulong = (unsigned long) (_length); \ | |
643 | const void *__ctf_tmp_ptr = (_src); \ | |
644 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ | |
645 | __stack_data += sizeof(unsigned long); \ | |
6b272cda MD |
646 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
647 | __stack_data += sizeof(void *); \ | |
f127e61e MD |
648 | } |
649 | ||
43803cf2 MD |
650 | #undef _ctf_array_bitfield |
651 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
3834b99f | 652 | _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite) |
43803cf2 | 653 | |
f127e61e MD |
654 | #undef _ctf_sequence_encoded |
655 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 656 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
657 | { \ |
658 | unsigned long __ctf_tmp_ulong = (unsigned long) (_src_length); \ | |
659 | const void *__ctf_tmp_ptr = (_src); \ | |
660 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ | |
661 | __stack_data += sizeof(unsigned long); \ | |
6b272cda MD |
662 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
663 | __stack_data += sizeof(void *); \ | |
f127e61e MD |
664 | } |
665 | ||
43803cf2 MD |
666 | #undef _ctf_sequence_bitfield |
667 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
668 | _length_type, _src_length, \ | |
669 | _user, _nowrite) \ | |
670 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
671 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
672 | ||
f127e61e MD |
673 | #undef _ctf_string |
674 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
675 | { \ | |
1d84e8e7 MD |
676 | const void *__ctf_tmp_ptr = \ |
677 | ((_src) ? (_src) : __LTTNG_NULL_STRING); \ | |
6b272cda MD |
678 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
679 | __stack_data += sizeof(void *); \ | |
f127e61e | 680 | } |
c6e3f225 | 681 | |
141ddf28 MD |
682 | #undef _ctf_enum |
683 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
684 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
685 | ||
e763dbf5 | 686 | #undef TP_PROTO |
f127e61e | 687 | #define TP_PROTO(...) __VA_ARGS__ |
e763dbf5 | 688 | |
f127e61e MD |
689 | #undef TP_FIELDS |
690 | #define TP_FIELDS(...) __VA_ARGS__ | |
e763dbf5 | 691 | |
7ca580f8 MD |
692 | #undef TP_locvar |
693 | #define TP_locvar(...) __VA_ARGS__ | |
694 | ||
f127e61e | 695 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 696 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e | 697 | static inline \ |
99d223ad | 698 | void __event_prepare_interpreter_stack__##_name(char *__stack_data, \ |
f127e61e | 699 | void *__tp_locvar) \ |
e763dbf5 | 700 | { \ |
7ca580f8 MD |
701 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
702 | \ | |
f127e61e | 703 | _fields \ |
e763dbf5 MD |
704 | } |
705 | ||
f127e61e | 706 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 707 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e | 708 | static inline \ |
99d223ad | 709 | void __event_prepare_interpreter_stack__##_name(char *__stack_data, \ |
f127e61e | 710 | void *__tp_locvar, _proto) \ |
d3de7f14 | 711 | { \ |
7ca580f8 MD |
712 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
713 | \ | |
f127e61e | 714 | _fields \ |
d3de7f14 MD |
715 | } |
716 | ||
e763dbf5 MD |
717 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
718 | ||
e763dbf5 | 719 | /* |
f127e61e | 720 | * Stage 5 of the trace events. |
40652b65 | 721 | * |
f127e61e | 722 | * Create static inline function that calculates event payload alignment. |
3c4ffab9 MD |
723 | */ |
724 | ||
f127e61e | 725 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb MD |
726 | #include <lttng/events-reset.h> |
727 | #include <lttng/events-write.h> | |
3c4ffab9 | 728 | |
f127e61e MD |
729 | #undef _ctf_integer_ext |
730 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ | |
731 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
3c4ffab9 | 732 | |
f127e61e | 733 | #undef _ctf_array_encoded |
3834b99f | 734 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e | 735 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); |
3c4ffab9 | 736 | |
43803cf2 MD |
737 | #undef _ctf_array_bitfield |
738 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
3834b99f | 739 | _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite) |
43803cf2 | 740 | |
f127e61e MD |
741 | #undef _ctf_sequence_encoded |
742 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 743 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
744 | __event_align = max_t(size_t, __event_align, lttng_alignof(_length_type)); \ |
745 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
64c796d8 | 746 | |
43803cf2 MD |
747 | #undef _ctf_sequence_bitfield |
748 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
749 | _length_type, _src_length, \ | |
750 | _user, _nowrite) \ | |
751 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
752 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
753 | ||
f127e61e MD |
754 | #undef _ctf_string |
755 | #define _ctf_string(_item, _src, _user, _nowrite) | |
64c796d8 | 756 | |
141ddf28 MD |
757 | #undef _ctf_enum |
758 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
759 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
760 | ||
f64dd4be MD |
761 | #undef ctf_align |
762 | #define ctf_align(_type) \ | |
763 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
764 | ||
f127e61e MD |
765 | #undef TP_PROTO |
766 | #define TP_PROTO(...) __VA_ARGS__ | |
84da5206 | 767 | |
f127e61e MD |
768 | #undef TP_FIELDS |
769 | #define TP_FIELDS(...) __VA_ARGS__ | |
c6e3f225 | 770 | |
f127e61e MD |
771 | #undef TP_locvar |
772 | #define TP_locvar(...) __VA_ARGS__ | |
3c4ffab9 | 773 | |
f64dd4be MD |
774 | #undef ctf_custom_field |
775 | #define ctf_custom_field(_type, _item, _code) _code | |
776 | ||
777 | #undef ctf_custom_code | |
778 | #define ctf_custom_code(...) \ | |
779 | { \ | |
780 | __VA_ARGS__ \ | |
781 | } | |
782 | ||
f127e61e | 783 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 784 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
785 | static inline size_t __event_get_align__##_name(void *__tp_locvar, _proto) \ |
786 | { \ | |
787 | size_t __event_align = 1; \ | |
788 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ | |
789 | \ | |
790 | _fields \ | |
791 | return __event_align; \ | |
792 | } | |
3c4ffab9 | 793 | |
3bc29f0a | 794 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 795 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
796 | static inline size_t __event_get_align__##_name(void *__tp_locvar) \ |
797 | { \ | |
798 | size_t __event_align = 1; \ | |
799 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ | |
800 | \ | |
801 | _fields \ | |
802 | return __event_align; \ | |
803 | } | |
d3de7f14 | 804 | |
3c4ffab9 MD |
805 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
806 | ||
3c4ffab9 | 807 | /* |
f127e61e | 808 | * Stage 6 of tracepoint event generation. |
e763dbf5 | 809 | * |
f127e61e MD |
810 | * Create the probe function. This function calls event size calculation |
811 | * and writes event data into the buffer. | |
40652b65 MD |
812 | */ |
813 | ||
f127e61e | 814 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb MD |
815 | #include <lttng/events-reset.h> |
816 | #include <lttng/events-write.h> | |
c6e3f225 | 817 | |
f127e61e MD |
818 | #undef _ctf_integer_ext_fetched |
819 | #define _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
e763dbf5 | 820 | { \ |
f127e61e MD |
821 | _type __tmp = _src; \ |
822 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\ | |
aaa4004a | 823 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ |
f127e61e MD |
824 | } |
825 | ||
826 | #undef _ctf_integer_ext_isuser0 | |
827 | #define _ctf_integer_ext_isuser0(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
828 | _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) | |
829 | ||
830 | #undef _ctf_integer_ext_isuser1 | |
831 | #define _ctf_integer_ext_isuser1(_type, _item, _user_src, _byte_order, _base, _nowrite) \ | |
832 | { \ | |
3c8ebbc8 MD |
833 | union { \ |
834 | char __array[sizeof(_user_src)]; \ | |
835 | __typeof__(_user_src) __v; \ | |
836 | } __tmp_fetch; \ | |
837 | if (lib_ring_buffer_copy_from_user_check_nofault(__tmp_fetch.__array, \ | |
838 | &(_user_src), sizeof(_user_src))) \ | |
839 | memset(__tmp_fetch.__array, 0, sizeof(__tmp_fetch.__array)); \ | |
840 | _ctf_integer_ext_fetched(_type, _item, __tmp_fetch.__v, _byte_order, _base, _nowrite) \ | |
f127e61e MD |
841 | } |
842 | ||
843 | #undef _ctf_integer_ext | |
844 | #define _ctf_integer_ext(_type, _item, _user_src, _byte_order, _base, _user, _nowrite) \ | |
845 | _ctf_integer_ext_isuser##_user(_type, _item, _user_src, _byte_order, _base, _nowrite) | |
846 | ||
847 | #undef _ctf_array_encoded | |
3834b99f | 848 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
849 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ |
850 | if (_user) { \ | |
851 | __chan->ops->event_write_from_user(&__ctx, _src, sizeof(_type) * (_length)); \ | |
852 | } else { \ | |
853 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); \ | |
854 | } | |
855 | ||
43803cf2 MD |
856 | #if (__BYTE_ORDER == __LITTLE_ENDIAN) |
857 | #undef _ctf_array_bitfield | |
858 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
859 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
860 | if (_user) { \ | |
861 | __chan->ops->event_write_from_user(&__ctx, _src, sizeof(_type) * (_length)); \ | |
862 | } else { \ | |
863 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); \ | |
864 | } | |
865 | #else /* #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
866 | /* | |
867 | * For big endian, we need to byteswap into little endian. | |
868 | */ | |
869 | #undef _ctf_array_bitfield | |
870 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
871 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
872 | { \ | |
873 | size_t _i; \ | |
874 | \ | |
875 | for (_i = 0; _i < (_length); _i++) { \ | |
876 | _type _tmp; \ | |
877 | \ | |
878 | if (_user) { \ | |
879 | if (get_user(_tmp, (_type *) _src + _i)) \ | |
880 | _tmp = 0; \ | |
881 | } else { \ | |
882 | _tmp = ((_type *) _src)[_i]; \ | |
883 | } \ | |
884 | switch (sizeof(_type)) { \ | |
885 | case 1: \ | |
886 | break; \ | |
887 | case 2: \ | |
888 | _tmp = cpu_to_le16(_tmp); \ | |
889 | break; \ | |
890 | case 4: \ | |
891 | _tmp = cpu_to_le32(_tmp); \ | |
892 | break; \ | |
893 | case 8: \ | |
894 | _tmp = cpu_to_le64(_tmp); \ | |
895 | break; \ | |
896 | default: \ | |
897 | BUG_ON(1); \ | |
898 | } \ | |
899 | __chan->ops->event_write(&__ctx, &_tmp, sizeof(_type)); \ | |
900 | } \ | |
901 | } | |
902 | #endif /* #else #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
903 | ||
f127e61e MD |
904 | #undef _ctf_sequence_encoded |
905 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 906 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
84da5206 | 907 | { \ |
114667d5 | 908 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx]; \ |
f127e61e MD |
909 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
910 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
84da5206 | 911 | } \ |
f127e61e MD |
912 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ |
913 | if (_user) { \ | |
914 | __chan->ops->event_write_from_user(&__ctx, _src, \ | |
915 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
916 | } else { \ | |
917 | __chan->ops->event_write(&__ctx, _src, \ | |
918 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
919 | } | |
920 | ||
43803cf2 MD |
921 | #if (__BYTE_ORDER == __LITTLE_ENDIAN) |
922 | #undef _ctf_sequence_bitfield | |
923 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
924 | _length_type, _src_length, \ | |
925 | _user, _nowrite) \ | |
926 | { \ | |
114667d5 | 927 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx] * sizeof(_type) * CHAR_BIT; \ |
43803cf2 MD |
928 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
929 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
930 | } \ | |
931 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
932 | if (_user) { \ | |
933 | __chan->ops->event_write_from_user(&__ctx, _src, \ | |
934 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
935 | } else { \ | |
936 | __chan->ops->event_write(&__ctx, _src, \ | |
937 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
938 | } | |
939 | #else /* #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
940 | /* | |
941 | * For big endian, we need to byteswap into little endian. | |
942 | */ | |
943 | #undef _ctf_sequence_bitfield | |
944 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
945 | _length_type, _src_length, \ | |
946 | _user, _nowrite) \ | |
947 | { \ | |
114667d5 | 948 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx] * sizeof(_type) * CHAR_BIT; \ |
43803cf2 MD |
949 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
950 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
951 | } \ | |
952 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
953 | { \ | |
954 | size_t _i, _length; \ | |
955 | \ | |
956 | _length = __get_dynamic_len(dest); \ | |
957 | for (_i = 0; _i < _length; _i++) { \ | |
958 | _type _tmp; \ | |
959 | \ | |
960 | if (_user) { \ | |
961 | if (get_user(_tmp, (_type *) _src + _i)) \ | |
962 | _tmp = 0; \ | |
963 | } else { \ | |
964 | _tmp = ((_type *) _src)[_i]; \ | |
965 | } \ | |
966 | switch (sizeof(_type)) { \ | |
967 | case 1: \ | |
968 | break; \ | |
969 | case 2: \ | |
970 | _tmp = cpu_to_le16(_tmp); \ | |
971 | break; \ | |
972 | case 4: \ | |
973 | _tmp = cpu_to_le32(_tmp); \ | |
974 | break; \ | |
975 | case 8: \ | |
976 | _tmp = cpu_to_le64(_tmp); \ | |
977 | break; \ | |
978 | default: \ | |
979 | BUG_ON(1); \ | |
980 | } \ | |
981 | __chan->ops->event_write(&__ctx, &_tmp, sizeof(_type)); \ | |
982 | } \ | |
983 | } | |
984 | #endif /* #else #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
985 | ||
f127e61e MD |
986 | #undef _ctf_string |
987 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
f127e61e | 988 | if (_user) { \ |
1d84e8e7 | 989 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(*(_src))); \ |
f127e61e MD |
990 | __chan->ops->event_strcpy_from_user(&__ctx, _src, \ |
991 | __get_dynamic_len(dest)); \ | |
992 | } else { \ | |
1d84e8e7 MD |
993 | const char *__ctf_tmp_string = \ |
994 | ((_src) ? (_src) : __LTTNG_NULL_STRING); \ | |
995 | lib_ring_buffer_align_ctx(&__ctx, \ | |
996 | lttng_alignof(*__ctf_tmp_string)); \ | |
997 | __chan->ops->event_strcpy(&__ctx, __ctf_tmp_string, \ | |
f127e61e MD |
998 | __get_dynamic_len(dest)); \ |
999 | } | |
e763dbf5 | 1000 | |
141ddf28 MD |
1001 | #undef _ctf_enum |
1002 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
1003 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
f64dd4be MD |
1004 | |
1005 | #undef ctf_align | |
1006 | #define ctf_align(_type) \ | |
1007 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); | |
1008 | ||
1009 | #undef ctf_custom_field | |
1010 | #define ctf_custom_field(_type, _item, _code) _code | |
1011 | ||
1012 | #undef ctf_custom_code | |
1013 | #define ctf_custom_code(...) \ | |
1014 | { \ | |
1015 | __VA_ARGS__ \ | |
1016 | } | |
1017 | ||
e763dbf5 | 1018 | /* Beware: this get len actually consumes the len value */ |
f127e61e | 1019 | #undef __get_dynamic_len |
114667d5 | 1020 | #define __get_dynamic_len(field) this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx++] |
e763dbf5 MD |
1021 | |
1022 | #undef TP_PROTO | |
f127e61e | 1023 | #define TP_PROTO(...) __VA_ARGS__ |
e763dbf5 MD |
1024 | |
1025 | #undef TP_ARGS | |
f127e61e | 1026 | #define TP_ARGS(...) __VA_ARGS__ |
e763dbf5 | 1027 | |
f127e61e MD |
1028 | #undef TP_FIELDS |
1029 | #define TP_FIELDS(...) __VA_ARGS__ | |
e763dbf5 | 1030 | |
7ca580f8 MD |
1031 | #undef TP_locvar |
1032 | #define TP_locvar(...) __VA_ARGS__ | |
1033 | ||
265822ae MD |
1034 | #undef TP_code_pre |
1035 | #define TP_code_pre(...) __VA_ARGS__ | |
1036 | ||
1037 | #undef TP_code_post | |
1038 | #define TP_code_post(...) __VA_ARGS__ | |
7ca580f8 | 1039 | |
c337ddc2 MD |
1040 | /* |
1041 | * For state dump, check that "session" argument (mandatory) matches the | |
1042 | * session this event belongs to. Ensures that we write state dump data only | |
1043 | * into the started session, not into all sessions. | |
1044 | */ | |
1045 | #ifdef TP_SESSION_CHECK | |
1046 | #define _TP_SESSION_CHECK(session, csession) (session == csession) | |
1047 | #else /* TP_SESSION_CHECK */ | |
1048 | #define _TP_SESSION_CHECK(session, csession) 1 | |
1049 | #endif /* TP_SESSION_CHECK */ | |
1050 | ||
f9771d39 | 1051 | /* |
f127e61e MD |
1052 | * Using twice size for filter stack data to hold size and pointer for |
1053 | * each field (worse case). For integers, max size required is 64-bit. | |
1054 | * Same for double-precision floats. Those fit within | |
1055 | * 2*sizeof(unsigned long) for all supported architectures. | |
1056 | * Perform UNION (||) of filter runtime list. | |
f9771d39 | 1057 | */ |
3bc29f0a | 1058 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 1059 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
e763dbf5 MD |
1060 | static void __event_probe__##_name(void *__data, _proto) \ |
1061 | { \ | |
7ca580f8 | 1062 | struct probe_local_vars { _locvar }; \ |
a67ba386 | 1063 | struct lttng_kernel_event_recorder *__event_recorder = __data; \ |
7fad9b39 | 1064 | struct lttng_probe_ctx __lttng_probe_ctx = { \ |
a67ba386 | 1065 | .event = __event_recorder, \ |
7fad9b39 | 1066 | .event_notifier = NULL, \ |
ccecf3fb | 1067 | .interruptible = !irqs_disabled(), \ |
79150a49 | 1068 | }; \ |
a67ba386 | 1069 | struct lttng_channel *__chan = __event_recorder->chan; \ |
e0130fab | 1070 | struct lttng_session *__session = __chan->session; \ |
aaa4004a | 1071 | struct lib_ring_buffer_ctx __ctx; \ |
114667d5 MD |
1072 | ssize_t __event_len; \ |
1073 | size_t __event_align; \ | |
ec0a7fba | 1074 | size_t __orig_dynamic_len_offset, __dynamic_len_idx __attribute__((unused)); \ |
f127e61e | 1075 | union { \ |
114667d5 | 1076 | size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)]; \ |
f127e61e MD |
1077 | char __filter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \ |
1078 | } __stackvar; \ | |
e763dbf5 | 1079 | int __ret; \ |
7ca580f8 MD |
1080 | struct probe_local_vars __tp_locvar; \ |
1081 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
1082 | &__tp_locvar; \ | |
d1f652f8 | 1083 | struct lttng_id_tracker_rcu *__lf; \ |
e763dbf5 | 1084 | \ |
e0130fab | 1085 | if (!_TP_SESSION_CHECK(session, __session)) \ |
c337ddc2 | 1086 | return; \ |
585e5dcc | 1087 | if (unlikely(!LTTNG_READ_ONCE(__session->active))) \ |
e64957da | 1088 | return; \ |
585e5dcc | 1089 | if (unlikely(!LTTNG_READ_ONCE(__chan->enabled))) \ |
e64957da | 1090 | return; \ |
a67ba386 | 1091 | if (unlikely(!LTTNG_READ_ONCE(__event_recorder->parent.enabled))) \ |
52fc2e1f | 1092 | return; \ |
d1f652f8 MD |
1093 | __lf = lttng_rcu_dereference(__session->pid_tracker.p); \ |
1094 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, current->tgid))) \ | |
1095 | return; \ | |
1096 | __lf = lttng_rcu_dereference(__session->vpid_tracker.p); \ | |
1097 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, task_tgid_vnr(current)))) \ | |
1098 | return; \ | |
1099 | __lf = lttng_rcu_dereference(__session->uid_tracker.p); \ | |
1100 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1101 | lttng_current_uid()))) \ |
d1f652f8 MD |
1102 | return; \ |
1103 | __lf = lttng_rcu_dereference(__session->vuid_tracker.p); \ | |
1104 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1105 | lttng_current_vuid()))) \ |
d1f652f8 MD |
1106 | return; \ |
1107 | __lf = lttng_rcu_dereference(__session->gid_tracker.p); \ | |
1108 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1109 | lttng_current_gid()))) \ |
d1f652f8 MD |
1110 | return; \ |
1111 | __lf = lttng_rcu_dereference(__session->vgid_tracker.p); \ | |
1112 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1113 | lttng_current_vgid()))) \ |
e0130fab | 1114 | return; \ |
114667d5 MD |
1115 | __orig_dynamic_len_offset = this_cpu_ptr(<tng_dynamic_len_stack)->offset; \ |
1116 | __dynamic_len_idx = __orig_dynamic_len_offset; \ | |
265822ae | 1117 | _code_pre \ |
a67ba386 | 1118 | if (unlikely(!list_empty(&__event_recorder->priv->parent.filter_bytecode_runtime_head))) { \ |
f127e61e | 1119 | struct lttng_bytecode_runtime *bc_runtime; \ |
a67ba386 | 1120 | int __filter_record = __event_recorder->priv->parent.has_enablers_without_filter_bytecode; \ |
f127e61e | 1121 | \ |
99d223ad | 1122 | __event_prepare_interpreter_stack__##_name(__stackvar.__filter_stack_data, \ |
f127e61e | 1123 | tp_locvar, _args); \ |
a67ba386 | 1124 | lttng_list_for_each_entry_rcu(bc_runtime, &__event_recorder->priv->parent.filter_bytecode_runtime_head, node) { \ |
3d650c7b | 1125 | if (unlikely(bc_runtime->interpreter_funcs.filter(bc_runtime, &__lttng_probe_ctx, \ |
80c2a69a | 1126 | __stackvar.__filter_stack_data) & LTTNG_INTERPRETER_RECORD_FLAG)) { \ |
f127e61e | 1127 | __filter_record = 1; \ |
8904bcfa FD |
1128 | break; \ |
1129 | } \ | |
f127e61e MD |
1130 | } \ |
1131 | if (likely(!__filter_record)) \ | |
265822ae | 1132 | goto __post; \ |
f127e61e | 1133 | } \ |
114667d5 MD |
1134 | __event_len = __event_get_size__##_name(tp_locvar, _args); \ |
1135 | if (unlikely(__event_len < 0)) { \ | |
1136 | lib_ring_buffer_lost_event_too_big(__chan->chan); \ | |
1137 | goto __post; \ | |
1138 | } \ | |
7ca580f8 | 1139 | __event_align = __event_get_align__##_name(tp_locvar, _args); \ |
79150a49 | 1140 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, &__lttng_probe_ctx, __event_len, \ |
e763dbf5 | 1141 | __event_align, -1); \ |
a67ba386 | 1142 | __ret = __chan->ops->event_reserve(&__ctx, __event_recorder->priv->id); \ |
e763dbf5 | 1143 | if (__ret < 0) \ |
265822ae | 1144 | goto __post; \ |
f127e61e | 1145 | _fields \ |
aaa4004a | 1146 | __chan->ops->event_commit(&__ctx); \ |
265822ae MD |
1147 | __post: \ |
1148 | _code_post \ | |
114667d5 MD |
1149 | barrier(); /* use before un-reserve. */ \ |
1150 | this_cpu_ptr(<tng_dynamic_len_stack)->offset = __orig_dynamic_len_offset; \ | |
265822ae | 1151 | return; \ |
e763dbf5 MD |
1152 | } |
1153 | ||
3bc29f0a | 1154 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 1155 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f7bdf4db MD |
1156 | static void __event_probe__##_name(void *__data) \ |
1157 | { \ | |
7ca580f8 | 1158 | struct probe_local_vars { _locvar }; \ |
a67ba386 | 1159 | struct lttng_kernel_event_recorder *__event_recorder = __data; \ |
7fad9b39 | 1160 | struct lttng_probe_ctx __lttng_probe_ctx = { \ |
a67ba386 | 1161 | .event = __event_recorder, \ |
7fad9b39 | 1162 | .event_notifier = NULL, \ |
ccecf3fb | 1163 | .interruptible = !irqs_disabled(), \ |
79150a49 | 1164 | }; \ |
a67ba386 | 1165 | struct lttng_channel *__chan = __event_recorder->chan; \ |
e0130fab | 1166 | struct lttng_session *__session = __chan->session; \ |
f7bdf4db | 1167 | struct lib_ring_buffer_ctx __ctx; \ |
114667d5 MD |
1168 | ssize_t __event_len; \ |
1169 | size_t __event_align; \ | |
ec0a7fba | 1170 | size_t __orig_dynamic_len_offset, __dynamic_len_idx __attribute__((unused)); \ |
f127e61e | 1171 | union { \ |
114667d5 | 1172 | size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)]; \ |
f127e61e MD |
1173 | char __filter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \ |
1174 | } __stackvar; \ | |
f7bdf4db | 1175 | int __ret; \ |
7ca580f8 MD |
1176 | struct probe_local_vars __tp_locvar; \ |
1177 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
1178 | &__tp_locvar; \ | |
d1f652f8 | 1179 | struct lttng_id_tracker_rcu *__lf; \ |
f7bdf4db | 1180 | \ |
e0130fab | 1181 | if (!_TP_SESSION_CHECK(session, __session)) \ |
c337ddc2 | 1182 | return; \ |
585e5dcc | 1183 | if (unlikely(!LTTNG_READ_ONCE(__session->active))) \ |
f7bdf4db | 1184 | return; \ |
585e5dcc | 1185 | if (unlikely(!LTTNG_READ_ONCE(__chan->enabled))) \ |
f7bdf4db | 1186 | return; \ |
a67ba386 | 1187 | if (unlikely(!LTTNG_READ_ONCE(__event_recorder->parent.enabled))) \ |
f7bdf4db | 1188 | return; \ |
d1f652f8 MD |
1189 | __lf = lttng_rcu_dereference(__session->pid_tracker.p); \ |
1190 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, current->tgid))) \ | |
1191 | return; \ | |
1192 | __lf = lttng_rcu_dereference(__session->vpid_tracker.p); \ | |
1193 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, task_tgid_vnr(current)))) \ | |
1194 | return; \ | |
1195 | __lf = lttng_rcu_dereference(__session->uid_tracker.p); \ | |
1196 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1197 | lttng_current_uid()))) \ |
d1f652f8 MD |
1198 | return; \ |
1199 | __lf = lttng_rcu_dereference(__session->vuid_tracker.p); \ | |
1200 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1201 | lttng_current_vuid()))) \ |
d1f652f8 MD |
1202 | return; \ |
1203 | __lf = lttng_rcu_dereference(__session->gid_tracker.p); \ | |
1204 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1205 | lttng_current_gid()))) \ |
d1f652f8 MD |
1206 | return; \ |
1207 | __lf = lttng_rcu_dereference(__session->vgid_tracker.p); \ | |
1208 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
608416e1 | 1209 | lttng_current_vgid()))) \ |
e0130fab | 1210 | return; \ |
114667d5 MD |
1211 | __orig_dynamic_len_offset = this_cpu_ptr(<tng_dynamic_len_stack)->offset; \ |
1212 | __dynamic_len_idx = __orig_dynamic_len_offset; \ | |
265822ae | 1213 | _code_pre \ |
a67ba386 | 1214 | if (unlikely(!list_empty(&__event_recorder->priv->parent.filter_bytecode_runtime_head))) { \ |
f127e61e | 1215 | struct lttng_bytecode_runtime *bc_runtime; \ |
a67ba386 | 1216 | int __filter_record = __event_recorder->priv->parent.has_enablers_without_filter_bytecode; \ |
f127e61e | 1217 | \ |
99d223ad | 1218 | __event_prepare_interpreter_stack__##_name(__stackvar.__filter_stack_data, \ |
f127e61e | 1219 | tp_locvar); \ |
a67ba386 | 1220 | lttng_list_for_each_entry_rcu(bc_runtime, &__event_recorder->priv->parent.filter_bytecode_runtime_head, node) { \ |
3d650c7b | 1221 | if (unlikely(bc_runtime->interpreter_funcs.filter(bc_runtime, &__lttng_probe_ctx, \ |
80c2a69a | 1222 | __stackvar.__filter_stack_data) & LTTNG_INTERPRETER_RECORD_FLAG)) { \ |
f127e61e | 1223 | __filter_record = 1; \ |
8904bcfa FD |
1224 | break; \ |
1225 | } \ | |
f127e61e MD |
1226 | } \ |
1227 | if (likely(!__filter_record)) \ | |
265822ae | 1228 | goto __post; \ |
f127e61e | 1229 | } \ |
114667d5 MD |
1230 | __event_len = __event_get_size__##_name(tp_locvar); \ |
1231 | if (unlikely(__event_len < 0)) { \ | |
1232 | lib_ring_buffer_lost_event_too_big(__chan->chan); \ | |
1233 | goto __post; \ | |
1234 | } \ | |
7ca580f8 | 1235 | __event_align = __event_get_align__##_name(tp_locvar); \ |
79150a49 | 1236 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, &__lttng_probe_ctx, __event_len, \ |
f7bdf4db | 1237 | __event_align, -1); \ |
a67ba386 | 1238 | __ret = __chan->ops->event_reserve(&__ctx, __event_recorder->priv->id); \ |
f7bdf4db | 1239 | if (__ret < 0) \ |
265822ae | 1240 | goto __post; \ |
f127e61e | 1241 | _fields \ |
f7bdf4db | 1242 | __chan->ops->event_commit(&__ctx); \ |
265822ae MD |
1243 | __post: \ |
1244 | _code_post \ | |
114667d5 MD |
1245 | barrier(); /* use before un-reserve. */ \ |
1246 | this_cpu_ptr(<tng_dynamic_len_stack)->offset = __orig_dynamic_len_offset; \ | |
265822ae | 1247 | return; \ |
f7bdf4db MD |
1248 | } |
1249 | ||
e763dbf5 MD |
1250 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
1251 | ||
f127e61e MD |
1252 | #undef __get_dynamic_len |
1253 | ||
7fad9b39 FD |
1254 | /* |
1255 | * Stage 6.1 of tracepoint generation: generate event notifier probes | |
1256 | * | |
1257 | * Create the probe function. This function evaluates the filter bytecode and | |
1258 | * queue a notification to be sent to userspace. | |
1259 | */ | |
1260 | ||
1261 | #include <lttng/events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ | |
1262 | ||
1263 | #undef TP_PROTO | |
1264 | #define TP_PROTO(...) __VA_ARGS__ | |
1265 | ||
1266 | #undef TP_ARGS | |
1267 | #define TP_ARGS(...) __VA_ARGS__ | |
1268 | ||
1269 | #undef TP_FIELDS | |
1270 | #define TP_FIELDS(...) __VA_ARGS__ | |
1271 | ||
1272 | #undef TP_locvar | |
1273 | #define TP_locvar(...) __VA_ARGS__ | |
1274 | ||
1275 | #undef TP_code_pre | |
1276 | #define TP_code_pre(...) __VA_ARGS__ | |
1277 | ||
1278 | #undef TP_code_post | |
1279 | #define TP_code_post(...) __VA_ARGS__ | |
1280 | ||
1281 | /* | |
1282 | * Using twice size for filter stack data to hold size and pointer for | |
1283 | * each field (worse case). For integers, max size required is 64-bit. | |
1284 | * Same for double-precision floats. Those fit within | |
1285 | * 2*sizeof(unsigned long) for all supported architectures. | |
1286 | * Perform UNION (||) of filter runtime list. | |
1287 | */ | |
1288 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE | |
1289 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ | |
1290 | static void __event_notifier_probe__##_name(void *__data, _proto) \ | |
1291 | { \ | |
1292 | struct probe_local_vars { _locvar }; \ | |
a67ba386 | 1293 | struct lttng_kernel_event_notifier *__event_notifier = __data; \ |
7fad9b39 FD |
1294 | struct lttng_probe_ctx __lttng_probe_ctx = { \ |
1295 | .event = NULL, \ | |
1296 | .event_notifier = __event_notifier, \ | |
1297 | .interruptible = !irqs_disabled(), \ | |
1298 | }; \ | |
1299 | union { \ | |
1300 | size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)]; \ | |
99d223ad | 1301 | char __interpreter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \ |
7fad9b39 FD |
1302 | } __stackvar; \ |
1303 | struct probe_local_vars __tp_locvar; \ | |
1304 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
1305 | &__tp_locvar; \ | |
a67ba386 | 1306 | struct lttng_kernel_notification_ctx __notif_ctx; \ |
c3eddb2e | 1307 | bool __interpreter_stack_prepared = false; \ |
7fad9b39 | 1308 | \ |
a67ba386 | 1309 | if (unlikely(!READ_ONCE(__event_notifier->parent.enabled))) \ |
7fad9b39 FD |
1310 | return; \ |
1311 | _code_pre \ | |
a67ba386 | 1312 | if (unlikely(!list_empty(&__event_notifier->priv->parent.filter_bytecode_runtime_head))) { \ |
99d223ad | 1313 | struct lttng_bytecode_runtime *bc_runtime; \ |
a67ba386 | 1314 | int __filter_record = __event_notifier->priv->parent.has_enablers_without_filter_bytecode; \ |
99d223ad FD |
1315 | \ |
1316 | __event_prepare_interpreter_stack__##_name(__stackvar.__interpreter_stack_data, \ | |
1317 | tp_locvar, _args); \ | |
c3eddb2e | 1318 | __interpreter_stack_prepared = true; \ |
a67ba386 | 1319 | lttng_list_for_each_entry_rcu(bc_runtime, &__event_notifier->priv->parent.filter_bytecode_runtime_head, node) { \ |
99d223ad FD |
1320 | if (unlikely(bc_runtime->interpreter_funcs.filter(bc_runtime, &__lttng_probe_ctx, \ |
1321 | __stackvar.__interpreter_stack_data) & LTTNG_INTERPRETER_RECORD_FLAG)) \ | |
7fad9b39 FD |
1322 | __filter_record = 1; \ |
1323 | } \ | |
1324 | if (likely(!__filter_record)) \ | |
1325 | goto __post; \ | |
1326 | } \ | |
1327 | \ | |
c3eddb2e MD |
1328 | __notif_ctx.eval_capture = LTTNG_READ_ONCE(__event_notifier->eval_capture); \ |
1329 | if (unlikely(!__interpreter_stack_prepared && __notif_ctx.eval_capture)) \ | |
99d223ad FD |
1330 | __event_prepare_interpreter_stack__##_name( \ |
1331 | __stackvar.__interpreter_stack_data, \ | |
1332 | tp_locvar, _args); \ | |
1333 | \ | |
a67ba386 | 1334 | __event_notifier->notification_send(__event_notifier, \ |
99d223ad | 1335 | &__lttng_probe_ctx, \ |
c3eddb2e MD |
1336 | __stackvar.__interpreter_stack_data, \ |
1337 | &__notif_ctx); \ | |
99d223ad | 1338 | \ |
7fad9b39 FD |
1339 | __post: \ |
1340 | _code_post \ | |
1341 | return; \ | |
1342 | } | |
1343 | ||
1344 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS | |
1345 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ | |
1346 | static void __event_notifier_probe__##_name(void *__data) \ | |
1347 | { \ | |
1348 | struct probe_local_vars { _locvar }; \ | |
a67ba386 | 1349 | struct lttng_kernel_event_notifier *__event_notifier = __data; \ |
7fad9b39 FD |
1350 | struct lttng_probe_ctx __lttng_probe_ctx = { \ |
1351 | .event = NULL, \ | |
1352 | .event_notifier = __event_notifier, \ | |
1353 | .interruptible = !irqs_disabled(), \ | |
1354 | }; \ | |
1355 | union { \ | |
1356 | size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)]; \ | |
99d223ad | 1357 | char __interpreter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \ |
7fad9b39 FD |
1358 | } __stackvar; \ |
1359 | struct probe_local_vars __tp_locvar; \ | |
1360 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
1361 | &__tp_locvar; \ | |
a67ba386 | 1362 | struct lttng_kernel_notification_ctx __notif_ctx; \ |
c3eddb2e | 1363 | bool __interpreter_stack_prepared = false; \ |
7fad9b39 | 1364 | \ |
a67ba386 | 1365 | if (unlikely(!READ_ONCE(__event_notifier->parent.enabled))) \ |
7fad9b39 FD |
1366 | return; \ |
1367 | _code_pre \ | |
a67ba386 | 1368 | if (unlikely(!list_empty(&__event_notifier->priv->parent.filter_bytecode_runtime_head))) { \ |
99d223ad | 1369 | struct lttng_bytecode_runtime *bc_runtime; \ |
a67ba386 | 1370 | int __filter_record = __event_notifier->priv->parent.has_enablers_without_filter_bytecode; \ |
99d223ad FD |
1371 | \ |
1372 | __event_prepare_interpreter_stack__##_name(__stackvar.__interpreter_stack_data, \ | |
1373 | tp_locvar); \ | |
c3eddb2e | 1374 | __interpreter_stack_prepared = true; \ |
a67ba386 | 1375 | lttng_list_for_each_entry_rcu(bc_runtime, &__event_notifier->priv->parent.filter_bytecode_runtime_head, node) { \ |
99d223ad FD |
1376 | if (unlikely(bc_runtime->interpreter_funcs.filter(bc_runtime, &__lttng_probe_ctx, \ |
1377 | __stackvar.__interpreter_stack_data) & LTTNG_INTERPRETER_RECORD_FLAG)) \ | |
7fad9b39 FD |
1378 | __filter_record = 1; \ |
1379 | } \ | |
1380 | if (likely(!__filter_record)) \ | |
1381 | goto __post; \ | |
1382 | } \ | |
1383 | \ | |
c3eddb2e MD |
1384 | __notif_ctx.eval_capture = LTTNG_READ_ONCE(__event_notifier->eval_capture); \ |
1385 | if (unlikely(!__interpreter_stack_prepared && __notif_ctx.eval_capture)) \ | |
99d223ad FD |
1386 | __event_prepare_interpreter_stack__##_name( \ |
1387 | __stackvar.__interpreter_stack_data, \ | |
1388 | tp_locvar); \ | |
1389 | \ | |
a67ba386 | 1390 | __event_notifier->notification_send(__event_notifier, \ |
99d223ad | 1391 | &__lttng_probe_ctx, \ |
c3eddb2e MD |
1392 | __stackvar.__interpreter_stack_data, \ |
1393 | &__notif_ctx); \ | |
7fad9b39 FD |
1394 | __post: \ |
1395 | _code_post \ | |
1396 | return; \ | |
1397 | } | |
1398 | ||
1399 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
f127e61e MD |
1400 | /* |
1401 | * Stage 7 of the trace events. | |
1402 | * | |
1403 | * Create event descriptions. | |
1404 | */ | |
1405 | ||
1406 | /* Named field types must be defined in lttng-types.h */ | |
1407 | ||
3b4aafcb | 1408 | #include <lttng/events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
f127e61e MD |
1409 | |
1410 | #ifndef TP_PROBE_CB | |
1411 | #define TP_PROBE_CB(_template) &__event_probe__##_template | |
1412 | #endif | |
1413 | ||
7fad9b39 FD |
1414 | #ifndef TP_EVENT_NOTIFIER_PROBE_CB |
1415 | #define TP_EVENT_NOTIFIER_PROBE_CB(_template) &__event_notifier_probe__##_template | |
1416 | #endif | |
1417 | ||
f127e61e MD |
1418 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS |
1419 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
437d5aa5 MD |
1420 | static const struct lttng_kernel_event_desc __event_desc___##_map = { \ |
1421 | .event_name = #_map, \ | |
1422 | .event_kname = #_name, \ | |
1423 | .probe_callback = (void *) TP_PROBE_CB(_template), \ | |
f127e61e | 1424 | .fields = __event_fields___##_template, \ |
f127e61e MD |
1425 | .nr_fields = ARRAY_SIZE(__event_fields___##_template), \ |
1426 | .owner = THIS_MODULE, \ | |
437d5aa5 | 1427 | .event_notifier_callback = (void *) TP_EVENT_NOTIFIER_PROBE_CB(_template), \ |
f127e61e MD |
1428 | }; |
1429 | ||
1430 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
1431 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
1432 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) | |
1433 | ||
1434 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
1435 | ||
1436 | /* | |
1437 | * Stage 8 of the trace events. | |
1438 | * | |
1439 | * Create an array of event description pointers. | |
1440 | */ | |
1441 | ||
3b4aafcb | 1442 | #include <lttng/events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
f127e61e MD |
1443 | |
1444 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
1445 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
1446 | &__event_desc___##_map, | |
1447 | ||
1448 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
1449 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
1450 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) | |
1451 | ||
1452 | #define TP_ID1(_token, _system) _token##_system | |
1453 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1454 | ||
437d5aa5 | 1455 | static const struct lttng_kernel_event_desc *TP_ID(__event_desc___, TRACE_SYSTEM)[] = { |
f127e61e MD |
1456 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
1457 | }; | |
1458 | ||
1459 | #undef TP_ID1 | |
1460 | #undef TP_ID | |
1461 | ||
1462 | /* | |
1463 | * Stage 9 of the trace events. | |
1464 | * | |
1465 | * Create a toplevel descriptor for the whole probe. | |
1466 | */ | |
1467 | ||
1468 | #define TP_ID1(_token, _system) _token##_system | |
1469 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1470 | ||
1471 | /* non-const because list head will be modified when registered. */ | |
437d5aa5 MD |
1472 | static __used struct lttng_kernel_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = { |
1473 | .provider_name = __stringify(TRACE_SYSTEM), | |
f127e61e MD |
1474 | .event_desc = TP_ID(__event_desc___, TRACE_SYSTEM), |
1475 | .nr_events = ARRAY_SIZE(TP_ID(__event_desc___, TRACE_SYSTEM)), | |
1476 | .head = { NULL, NULL }, | |
1477 | .lazy_init_head = { NULL, NULL }, | |
1478 | .lazy = 0, | |
1479 | }; | |
1480 | ||
1481 | #undef TP_ID1 | |
1482 | #undef TP_ID | |
1483 | ||
3afe7aac | 1484 | /* |
c099397a | 1485 | * Stage 10 of the trace events. |
3afe7aac MD |
1486 | * |
1487 | * Register/unregister probes at module load/unload. | |
1488 | */ | |
1489 | ||
3b4aafcb | 1490 | #include <lttng/events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
3afe7aac MD |
1491 | |
1492 | #define TP_ID1(_token, _system) _token##_system | |
1493 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1494 | #define module_init_eval1(_token, _system) module_init(_token##_system) | |
1495 | #define module_init_eval(_token, _system) module_init_eval1(_token, _system) | |
1496 | #define module_exit_eval1(_token, _system) module_exit(_token##_system) | |
1497 | #define module_exit_eval(_token, _system) module_exit_eval1(_token, _system) | |
1498 | ||
2655f9ad | 1499 | #ifndef TP_MODULE_NOINIT |
3afe7aac MD |
1500 | static int TP_ID(__lttng_events_init__, TRACE_SYSTEM)(void) |
1501 | { | |
263b6c88 | 1502 | wrapper_vmalloc_sync_mappings(); |
a90917c3 | 1503 | return lttng_probe_register(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
1504 | } |
1505 | ||
3afe7aac MD |
1506 | static void TP_ID(__lttng_events_exit__, TRACE_SYSTEM)(void) |
1507 | { | |
a90917c3 | 1508 | lttng_probe_unregister(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
1509 | } |
1510 | ||
2655f9ad MD |
1511 | #ifndef TP_MODULE_NOAUTOLOAD |
1512 | module_init_eval(__lttng_events_init__, TRACE_SYSTEM); | |
3afe7aac | 1513 | module_exit_eval(__lttng_events_exit__, TRACE_SYSTEM); |
259b6cb3 | 1514 | #endif |
3afe7aac | 1515 | |
2655f9ad MD |
1516 | #endif |
1517 | ||
3afe7aac MD |
1518 | #undef module_init_eval |
1519 | #undef module_exit_eval | |
1520 | #undef TP_ID1 | |
1521 | #undef TP_ID | |
177b3692 MD |
1522 | |
1523 | #undef TP_PROTO | |
1524 | #undef TP_ARGS |