Commit | Line | Data |
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b7cdc182 | 1 | /* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only) |
9f36eaed | 2 | * |
3b4aafcb | 3 | * lttng/tracepoint-event-impl.h |
17baffe2 MD |
4 | * |
5 | * Copyright (C) 2009 Steven Rostedt <rostedt@goodmis.org> | |
f127e61e | 6 | * Copyright (C) 2009-2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
17baffe2 | 7 | */ |
f127e61e | 8 | |
d28686c1 | 9 | #include <linux/uaccess.h> |
d0dd2ecb | 10 | #include <linux/debugfs.h> |
f127e61e | 11 | #include <linux/rculist.h> |
43803cf2 | 12 | #include <asm/byteorder.h> |
bf1a9179 | 13 | #include <linux/swab.h> |
8d43abb7 | 14 | |
263b6c88 | 15 | #include <wrapper/vmalloc.h> /* for wrapper_vmalloc_sync_mappings() */ |
24591303 MD |
16 | #include <ringbuffer/frontend_types.h> |
17 | #include <ringbuffer/backend.h> | |
8d43abb7 | 18 | #include <wrapper/rcu.h> |
608416e1 | 19 | #include <wrapper/user_namespace.h> |
2df37e95 MD |
20 | #include <lttng/types.h> |
21 | #include <lttng/probe-user.h> | |
22 | #include <lttng/events.h> | |
23 | #include <lttng/tracer-core.h> | |
24 | #include <lttng/tp-mempool.h> | |
40652b65 | 25 | |
1d84e8e7 MD |
26 | #define __LTTNG_NULL_STRING "(null)" |
27 | ||
3b4aafcb MD |
28 | #undef PARAMS |
29 | #define PARAMS(args...) args | |
30 | ||
40652b65 | 31 | /* |
6db3d13b | 32 | * Macro declarations used for all stages. |
40652b65 MD |
33 | */ |
34 | ||
76e4f017 MD |
35 | /* |
36 | * LTTng name mapping macros. LTTng remaps some of the kernel events to | |
37 | * enforce name-spacing. | |
38 | */ | |
3bc29f0a | 39 | #undef LTTNG_TRACEPOINT_EVENT_MAP |
f127e61e | 40 | #define LTTNG_TRACEPOINT_EVENT_MAP(name, map, proto, args, fields) \ |
3bc29f0a | 41 | LTTNG_TRACEPOINT_EVENT_CLASS(map, \ |
76e4f017 MD |
42 | PARAMS(proto), \ |
43 | PARAMS(args), \ | |
f127e61e | 44 | PARAMS(fields)) \ |
3bc29f0a | 45 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(map, name, map, PARAMS(proto), PARAMS(args)) |
76e4f017 | 46 | |
3bc29f0a | 47 | #undef LTTNG_TRACEPOINT_EVENT_MAP_NOARGS |
f127e61e | 48 | #define LTTNG_TRACEPOINT_EVENT_MAP_NOARGS(name, map, fields) \ |
3bc29f0a | 49 | LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(map, \ |
f127e61e | 50 | PARAMS(fields)) \ |
3bc29f0a | 51 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(map, name, map) |
76e4f017 | 52 | |
f127e61e | 53 | #undef LTTNG_TRACEPOINT_EVENT_CODE_MAP |
265822ae | 54 | #define LTTNG_TRACEPOINT_EVENT_CODE_MAP(name, map, proto, args, _locvar, _code_pre, fields, _code_post) \ |
f127e61e MD |
55 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE(map, \ |
56 | PARAMS(proto), \ | |
57 | PARAMS(args), \ | |
58 | PARAMS(_locvar), \ | |
265822ae MD |
59 | PARAMS(_code_pre), \ |
60 | PARAMS(fields), \ | |
61 | PARAMS(_code_post)) \ | |
f127e61e MD |
62 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(map, name, map, PARAMS(proto), PARAMS(args)) |
63 | ||
3bc29f0a | 64 | #undef LTTNG_TRACEPOINT_EVENT_CODE |
265822ae | 65 | #define LTTNG_TRACEPOINT_EVENT_CODE(name, proto, args, _locvar, _code_pre, fields, _code_post) \ |
f127e61e | 66 | LTTNG_TRACEPOINT_EVENT_CODE_MAP(name, name, \ |
7ca580f8 MD |
67 | PARAMS(proto), \ |
68 | PARAMS(args), \ | |
69 | PARAMS(_locvar), \ | |
265822ae MD |
70 | PARAMS(_code_pre), \ |
71 | PARAMS(fields), \ | |
72 | PARAMS(_code_post)) | |
fcf7fa33 | 73 | |
40652b65 | 74 | /* |
3bc29f0a MD |
75 | * LTTNG_TRACEPOINT_EVENT_CLASS can be used to add a generic function |
76 | * handlers for events. That is, if all events have the same parameters | |
77 | * and just have distinct trace points. Each tracepoint can be defined | |
78 | * with LTTNG_TRACEPOINT_EVENT_INSTANCE and that will map the | |
79 | * LTTNG_TRACEPOINT_EVENT_CLASS to the tracepoint. | |
40652b65 | 80 | * |
3bc29f0a MD |
81 | * LTTNG_TRACEPOINT_EVENT is a one to one mapping between tracepoint and |
82 | * template. | |
40652b65 | 83 | */ |
6db3d13b | 84 | |
3bc29f0a | 85 | #undef LTTNG_TRACEPOINT_EVENT |
f127e61e | 86 | #define LTTNG_TRACEPOINT_EVENT(name, proto, args, fields) \ |
3bc29f0a MD |
87 | LTTNG_TRACEPOINT_EVENT_MAP(name, name, \ |
88 | PARAMS(proto), \ | |
89 | PARAMS(args), \ | |
f127e61e | 90 | PARAMS(fields)) |
40652b65 | 91 | |
3bc29f0a | 92 | #undef LTTNG_TRACEPOINT_EVENT_NOARGS |
f127e61e MD |
93 | #define LTTNG_TRACEPOINT_EVENT_NOARGS(name, fields) \ |
94 | LTTNG_TRACEPOINT_EVENT_MAP_NOARGS(name, name, PARAMS(fields)) | |
76e4f017 | 95 | |
3bc29f0a MD |
96 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE |
97 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE(template, name, proto, args) \ | |
98 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(template, name, name, PARAMS(proto), PARAMS(args)) | |
76e4f017 | 99 | |
3bc29f0a MD |
100 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS |
101 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(template, name) \ | |
102 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(template, name, name) | |
76e4f017 | 103 | |
3bc29f0a | 104 | #undef LTTNG_TRACEPOINT_EVENT_CLASS |
f127e61e | 105 | #define LTTNG_TRACEPOINT_EVENT_CLASS(_name, _proto, _args, _fields) \ |
3bc29f0a | 106 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, PARAMS(_proto), PARAMS(_args), , , \ |
265822ae | 107 | PARAMS(_fields), ) |
7ca580f8 | 108 | |
3bc29f0a | 109 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS |
f127e61e | 110 | #define LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(_name, _fields) \ |
265822ae | 111 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, , , PARAMS(_fields), ) |
7ca580f8 MD |
112 | |
113 | ||
f62b389e | 114 | /* |
c099397a | 115 | * Stage 1 of the trace events. |
f62b389e MD |
116 | * |
117 | * Create dummy trace calls for each events, verifying that the LTTng module | |
3bc29f0a MD |
118 | * instrumentation headers match the kernel arguments. Will be optimized |
119 | * out by the compiler. | |
f62b389e MD |
120 | */ |
121 | ||
f127e61e | 122 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb | 123 | #include <lttng/events-reset.h> |
f62b389e MD |
124 | |
125 | #undef TP_PROTO | |
f127e61e | 126 | #define TP_PROTO(...) __VA_ARGS__ |
f62b389e MD |
127 | |
128 | #undef TP_ARGS | |
f127e61e | 129 | #define TP_ARGS(...) __VA_ARGS__ |
f62b389e | 130 | |
3bc29f0a MD |
131 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP |
132 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
7eb827f2 | 133 | void trace_##_name(_proto); |
f62b389e | 134 | |
3bc29f0a MD |
135 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS |
136 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
cb1aa0c7 | 137 | void trace_##_name(void); |
f7bdf4db | 138 | |
f62b389e MD |
139 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
140 | ||
d0558de2 MD |
141 | /* |
142 | * Stage 1.1 of the trace events. | |
143 | * | |
144 | * Create dummy trace prototypes for each event class, and for each used | |
145 | * template. This will allow checking whether the prototypes from the | |
146 | * class and the instance using the class actually match. | |
147 | */ | |
148 | ||
3b4aafcb | 149 | #include <lttng/events-reset.h> /* Reset all macros within TRACE_EVENT */ |
d0558de2 MD |
150 | |
151 | #undef TP_PROTO | |
152 | #define TP_PROTO(...) __VA_ARGS__ | |
153 | ||
154 | #undef TP_ARGS | |
155 | #define TP_ARGS(...) __VA_ARGS__ | |
156 | ||
157 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
158 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
159 | void __event_template_proto___##_template(_proto); | |
160 | ||
161 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
162 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
163 | void __event_template_proto___##_template(void); | |
164 | ||
165 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE | |
265822ae | 166 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
d0558de2 MD |
167 | void __event_template_proto___##_name(_proto); |
168 | ||
169 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS | |
265822ae | 170 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
d0558de2 MD |
171 | void __event_template_proto___##_name(void); |
172 | ||
173 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
174 | ||
141ddf28 MD |
175 | /* |
176 | * Stage 1.2 of tracepoint event generation | |
177 | * | |
178 | * Unfolding the enums | |
179 | */ | |
3b4aafcb | 180 | #include <lttng/events-reset.h> /* Reset all macros within TRACE_EVENT */ |
141ddf28 MD |
181 | |
182 | /* Enumeration entry (single value) */ | |
183 | #undef ctf_enum_value | |
184 | #define ctf_enum_value(_string, _value) \ | |
437d5aa5 | 185 | lttng_kernel_static_enum_entry_value(_string, _value) |
141ddf28 MD |
186 | |
187 | /* Enumeration entry (range) */ | |
188 | #undef ctf_enum_range | |
189 | #define ctf_enum_range(_string, _range_start, _range_end) \ | |
437d5aa5 | 190 | lttng_kernel_static_enum_entry_range(_string, _range_start, _range_end) |
141ddf28 | 191 | |
08ad1061 PP |
192 | /* Enumeration entry (automatic value; follows the rules of CTF) */ |
193 | #undef ctf_enum_auto | |
437d5aa5 MD |
194 | #define ctf_enum_auto(_string) \ |
195 | lttng_kernel_static_enum_entry_auto(_string) | |
08ad1061 | 196 | |
141ddf28 MD |
197 | #undef TP_ENUM_VALUES |
198 | #define TP_ENUM_VALUES(...) \ | |
199 | __VA_ARGS__ | |
200 | ||
16e1064f FD |
201 | #ifndef LTTNG_TRACEPOINT_TYPE_EXTERN |
202 | # undef LTTNG_TRACEPOINT_ENUM | |
203 | # define LTTNG_TRACEPOINT_ENUM(_name, _values) \ | |
437d5aa5 | 204 | static const struct lttng_kernel_enum_entry *__enum_values__##_name[] = { \ |
141ddf28 MD |
205 | _values \ |
206 | }; | |
16e1064f | 207 | #endif |
141ddf28 MD |
208 | |
209 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
210 | ||
e69abdfd MD |
211 | /* |
212 | * Stage 1.3 of the trace events. | |
213 | * | |
214 | * Create probe callback prototypes. | |
215 | */ | |
216 | ||
217 | /* Reset all macros within TRACEPOINT_EVENT */ | |
218 | #include <lttng/events-reset.h> | |
219 | ||
220 | #undef TP_PROTO | |
221 | #define TP_PROTO(...) __VA_ARGS__ | |
222 | ||
223 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE | |
224 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ | |
225 | static void __event_probe__##_name(void *__data, _proto); | |
226 | ||
227 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS | |
228 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ | |
229 | static void __event_probe__##_name(void *__data); | |
230 | ||
231 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
232 | ||
233 | /* | |
234 | * Stage 1.4 of tracepoint event generation. | |
235 | * | |
236 | * Declare toplevel descriptor for the whole probe. | |
237 | */ | |
238 | ||
239 | #define TP_ID1(_token, _system) _token##_system | |
240 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
241 | ||
242 | static __used struct lttng_kernel_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM); | |
243 | ||
244 | #undef TP_ID1 | |
245 | #undef TP_ID | |
246 | ||
6db3d13b | 247 | /* |
c099397a | 248 | * Stage 2 of the trace events. |
6db3d13b MD |
249 | * |
250 | * Create event field type metadata section. | |
251 | * Each event produce an array of fields. | |
252 | */ | |
253 | ||
f127e61e | 254 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb MD |
255 | #include <lttng/events-reset.h> |
256 | #include <lttng/events-write.h> | |
257 | #include <lttng/events-nowrite.h> | |
6db3d13b | 258 | |
f127e61e | 259 | #undef _ctf_integer_ext |
437d5aa5 MD |
260 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ |
261 | lttng_kernel_static_event_field(#_item, \ | |
262 | lttng_kernel_static_type_integer_from_type(_type, _byte_order, _base), \ | |
263 | _nowrite, _user, 0), | |
40652b65 | 264 | |
f127e61e | 265 | #undef _ctf_array_encoded |
ceabb767 MD |
266 | #define _ctf_array_encoded(_type, _item, _src, _length, \ |
267 | _encoding, _byte_order, _elem_type_base, _user, _nowrite) \ | |
437d5aa5 MD |
268 | lttng_kernel_static_event_field(#_item, \ |
269 | lttng_kernel_static_type_array(_length, \ | |
270 | lttng_kernel_static_type_integer_from_type(_type, _byte_order, _elem_type_base), \ | |
271 | 0, \ | |
272 | _encoding), \ | |
273 | _nowrite, _user, 0), | |
40652b65 | 274 | |
43803cf2 MD |
275 | #undef _ctf_array_bitfield |
276 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
437d5aa5 MD |
277 | lttng_kernel_static_event_field(#_item, \ |
278 | lttng_kernel_static_type_array((_length) * sizeof(_type) * CHAR_BIT, \ | |
279 | lttng_kernel_static_type_integer(1, 1, 0, __LITTLE_ENDIAN, 10), \ | |
280 | lttng_alignof(_type), \ | |
281 | none), \ | |
282 | _nowrite, _user, 0), | |
43803cf2 | 283 | |
f127e61e MD |
284 | #undef _ctf_sequence_encoded |
285 | #define _ctf_sequence_encoded(_type, _item, _src, \ | |
286 | _length_type, _src_length, _encoding, \ | |
ceabb767 | 287 | _byte_order, _elem_type_base, _user, _nowrite) \ |
437d5aa5 MD |
288 | lttng_kernel_static_event_field("_" #_item "_length", \ |
289 | lttng_kernel_static_type_integer_from_type(_length_type, __BYTE_ORDER, 10), \ | |
290 | _nowrite, 0, 1), \ | |
291 | lttng_kernel_static_event_field(#_item, \ | |
f0039724 | 292 | lttng_kernel_static_type_sequence(NULL, /* Use previous field. */ \ |
437d5aa5 MD |
293 | lttng_kernel_static_type_integer_from_type(_type, _byte_order, _elem_type_base), \ |
294 | 0, \ | |
295 | _encoding), \ | |
296 | _nowrite, _user, 0), | |
43803cf2 MD |
297 | |
298 | #undef _ctf_sequence_bitfield | |
299 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
300 | _length_type, _src_length, \ | |
301 | _user, _nowrite) \ | |
437d5aa5 MD |
302 | lttng_kernel_static_event_field("_" #_item "_length", \ |
303 | lttng_kernel_static_type_integer_from_type(_length_type, __BYTE_ORDER, 10), \ | |
304 | _nowrite, 0, 1), \ | |
305 | lttng_kernel_static_event_field(#_item, \ | |
f0039724 | 306 | lttng_kernel_static_type_sequence(NULL, /* Use previous field. */ \ |
437d5aa5 MD |
307 | lttng_kernel_static_type_integer(1, 1, 0, __LITTLE_ENDIAN, 10), \ |
308 | lttng_alignof(_type), \ | |
309 | none), \ | |
310 | _nowrite, _user, 0), | |
40652b65 | 311 | |
f127e61e MD |
312 | #undef _ctf_string |
313 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
437d5aa5 MD |
314 | lttng_kernel_static_event_field(#_item, \ |
315 | lttng_kernel_static_type_string(UTF8), \ | |
316 | _nowrite, _user, 0), | |
317 | ||
318 | #undef _ctf_unused | |
319 | #define _ctf_unused(_src) | |
1d12cebd | 320 | |
141ddf28 MD |
321 | #undef _ctf_enum |
322 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
437d5aa5 MD |
323 | lttng_kernel_static_event_field(#_item, \ |
324 | lttng_kernel_static_type_enum(&__enum_##_name, \ | |
325 | lttng_kernel_static_type_integer_from_type(_type, __BYTE_ORDER, 10)), \ | |
326 | _nowrite, _user, 0), | |
f64dd4be MD |
327 | |
328 | #undef ctf_custom_field | |
329 | #define ctf_custom_field(_type, _item, _code) \ | |
437d5aa5 | 330 | lttng_kernel_static_event_field(#_item, PARAMS(_type), 0, 0, 1), |
f64dd4be MD |
331 | |
332 | #undef ctf_custom_type | |
333 | #define ctf_custom_type(...) __VA_ARGS__ | |
334 | ||
f127e61e MD |
335 | #undef TP_FIELDS |
336 | #define TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */ | |
1d12cebd | 337 | |
e69abdfd MD |
338 | #ifndef TP_PROBE_CB |
339 | #define TP_PROBE_CB(_template) &__event_probe__##_template | |
340 | #endif | |
341 | ||
3bc29f0a | 342 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 343 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
437d5aa5 | 344 | static const struct lttng_kernel_event_field *__event_fields___##_name[] = { \ |
f127e61e | 345 | _fields \ |
e69abdfd MD |
346 | }; \ |
347 | static const struct lttng_kernel_tracepoint_class lttng_kernel__event_class___##_name = { \ | |
348 | .fields = __event_fields___##_name, \ | |
349 | .nr_fields = ARRAY_SIZE(__event_fields___##_name), \ | |
350 | .probe_callback = (void (*)(void)) TP_PROBE_CB(_name), \ | |
351 | .probe_desc = &TP_ID(__probe_desc___, TRACE_SYSTEM), \ | |
299338c8 MD |
352 | }; |
353 | ||
3bc29f0a | 354 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae MD |
355 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
356 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, PARAMS(_fields), _code_post) | |
f7bdf4db | 357 | |
16e1064f FD |
358 | #ifdef LTTNG_TRACEPOINT_TYPE_EXTERN |
359 | # undef LTTNG_TRACEPOINT_TYPE | |
360 | # define LTTNG_TRACEPOINT_TYPE(_prototype, _init) \ | |
361 | extern _prototype; | |
362 | #elif defined (LTTNG_TRACEPOINT_TYPE_DEFINE_EXPORT) | |
363 | # define LTTNG_TRACEPOINT_TYPE_VISIBILITY __attribute__((visibility("hidden"))) | |
364 | #else | |
365 | # define LTTNG_TRACEPOINT_TYPE_VISIBILITY static | |
366 | #endif | |
367 | ||
368 | #ifdef LTTNG_TRACEPOINT_TYPE_VISIBILITY | |
369 | # undef LTTNG_TRACEPOINT_TYPE | |
370 | # define LTTNG_TRACEPOINT_TYPE(_prototype, _init) \ | |
371 | LTTNG_TRACEPOINT_TYPE_VISIBILITY _prototype = _init; | |
372 | #endif | |
373 | ||
374 | # undef LTTNG_TRACEPOINT_ENUM | |
375 | # define LTTNG_TRACEPOINT_ENUM(_name, _values) \ | |
376 | LTTNG_TRACEPOINT_TYPE(PARAMS(const struct lttng_kernel_enum_desc __enum_##_name), \ | |
377 | PARAMS({ \ | |
378 | .name = #_name, \ | |
379 | .entries = __enum_values__##_name, \ | |
380 | .nr_entries = ARRAY_SIZE(__enum_values__##_name), \ | |
e69abdfd | 381 | .probe_desc = &TP_ID(__probe_desc___, TRACE_SYSTEM), \ |
16e1064f | 382 | })) |
141ddf28 | 383 | |
e69abdfd MD |
384 | #define TP_ID1(_token, _system) _token##_system |
385 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
386 | ||
437d5aa5 | 387 | #define LTTNG_CREATE_FIELD_METADATA |
299338c8 | 388 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
437d5aa5 | 389 | #undef LTTNG_CREATE_FIELD_METADATA |
299338c8 | 390 | |
16e1064f FD |
391 | #undef LTTNG_TRACEPOINT_TYPE_VISIBILITY |
392 | ||
e69abdfd MD |
393 | #undef TP_ID1 |
394 | #undef TP_ID | |
19c57fbf | 395 | |
f7bdf4db MD |
396 | /* |
397 | * Stage 4 of the trace events. | |
398 | * | |
40652b65 MD |
399 | * Create static inline function that calculates event size. |
400 | */ | |
401 | ||
f127e61e | 402 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb MD |
403 | #include <lttng/events-reset.h> |
404 | #include <lttng/events-write.h> | |
6db3d13b | 405 | |
f127e61e MD |
406 | #undef _ctf_integer_ext |
407 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ | |
a90917c3 | 408 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
0d1d4002 | 409 | __event_len += sizeof(_type); |
6db3d13b | 410 | |
f127e61e | 411 | #undef _ctf_array_encoded |
3834b99f | 412 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
a90917c3 | 413 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
0d1d4002 | 414 | __event_len += sizeof(_type) * (_length); |
6db3d13b | 415 | |
43803cf2 MD |
416 | #undef _ctf_array_bitfield |
417 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
3834b99f | 418 | _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite) |
43803cf2 | 419 | |
f127e61e MD |
420 | #undef _ctf_sequence_encoded |
421 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 422 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
423 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_length_type)); \ |
424 | __event_len += sizeof(_length_type); \ | |
a90917c3 | 425 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
114667d5 MD |
426 | { \ |
427 | size_t __seqlen = (_src_length); \ | |
428 | \ | |
429 | if (unlikely(++this_cpu_ptr(<tng_dynamic_len_stack)->offset >= LTTNG_DYNAMIC_LEN_STACK_SIZE)) \ | |
430 | goto error; \ | |
431 | barrier(); /* reserve before use. */ \ | |
432 | this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = __seqlen; \ | |
433 | __event_len += sizeof(_type) * __seqlen; \ | |
434 | } | |
6db3d13b | 435 | |
43803cf2 MD |
436 | #undef _ctf_sequence_bitfield |
437 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
438 | _length_type, _src_length, \ | |
439 | _user, _nowrite) \ | |
440 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
441 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
442 | ||
d0255731 | 443 | /* |
f127e61e | 444 | * ctf_user_string includes \0. If returns 0, it faulted, so we set size to |
786b8312 | 445 | * 1 (\0 only). |
d0255731 | 446 | */ |
f127e61e MD |
447 | #undef _ctf_string |
448 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
114667d5 MD |
449 | if (unlikely(++this_cpu_ptr(<tng_dynamic_len_stack)->offset >= LTTNG_DYNAMIC_LEN_STACK_SIZE)) \ |
450 | goto error; \ | |
451 | barrier(); /* reserve before use. */ \ | |
452 | if (_user) { \ | |
453 | __event_len += this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = \ | |
96d0248a | 454 | max_t(size_t, lttng_strlen_user_inatomic(_src), 1); \ |
114667d5 MD |
455 | } else { \ |
456 | __event_len += this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = \ | |
1d84e8e7 | 457 | strlen((_src) ? (_src) : __LTTNG_NULL_STRING) + 1; \ |
114667d5 | 458 | } |
c6e3f225 | 459 | |
141ddf28 MD |
460 | #undef _ctf_enum |
461 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
462 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
463 | ||
f64dd4be MD |
464 | #undef ctf_align |
465 | #define ctf_align(_type) \ | |
466 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); | |
467 | ||
468 | #undef ctf_custom_field | |
469 | #define ctf_custom_field(_type, _item, _code) \ | |
470 | { \ | |
471 | _code \ | |
472 | } | |
473 | ||
474 | #undef ctf_custom_code | |
475 | #define ctf_custom_code(...) __VA_ARGS__ | |
476 | ||
0d1d4002 | 477 | #undef TP_PROTO |
f127e61e | 478 | #define TP_PROTO(...) __VA_ARGS__ |
6db3d13b | 479 | |
f127e61e MD |
480 | #undef TP_FIELDS |
481 | #define TP_FIELDS(...) __VA_ARGS__ | |
6db3d13b | 482 | |
7ca580f8 MD |
483 | #undef TP_locvar |
484 | #define TP_locvar(...) __VA_ARGS__ | |
485 | ||
3bc29f0a | 486 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 487 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
114667d5 | 488 | static inline ssize_t __event_get_size__##_name(void *__tp_locvar, _proto) \ |
0d1d4002 MD |
489 | { \ |
490 | size_t __event_len = 0; \ | |
d3de7f14 | 491 | unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \ |
7ca580f8 | 492 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
d3de7f14 | 493 | \ |
f127e61e | 494 | _fields \ |
d3de7f14 | 495 | return __event_len; \ |
114667d5 MD |
496 | \ |
497 | error: \ | |
498 | __attribute__((unused)); \ | |
499 | return -1; \ | |
d3de7f14 MD |
500 | } |
501 | ||
3bc29f0a | 502 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 503 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
114667d5 | 504 | static inline ssize_t __event_get_size__##_name(void *__tp_locvar) \ |
d3de7f14 MD |
505 | { \ |
506 | size_t __event_len = 0; \ | |
507 | unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \ | |
7ca580f8 | 508 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
0d1d4002 | 509 | \ |
f127e61e | 510 | _fields \ |
0d1d4002 | 511 | return __event_len; \ |
114667d5 MD |
512 | \ |
513 | error: \ | |
514 | __attribute__((unused)); \ | |
515 | return -1; \ | |
6db3d13b | 516 | } |
40652b65 MD |
517 | |
518 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
519 | ||
f127e61e | 520 | |
40652b65 | 521 | /* |
f127e61e | 522 | * Stage 4.1 of tracepoint event generation. |
e763dbf5 | 523 | * |
f127e61e MD |
524 | * Create static inline function that layout the filter stack data. |
525 | * We make both write and nowrite data available to the filter. | |
e763dbf5 MD |
526 | */ |
527 | ||
f127e61e | 528 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb MD |
529 | #include <lttng/events-reset.h> |
530 | #include <lttng/events-write.h> | |
531 | #include <lttng/events-nowrite.h> | |
f127e61e MD |
532 | |
533 | #undef _ctf_integer_ext_fetched | |
534 | #define _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
535 | if (lttng_is_signed_type(_type)) { \ | |
536 | int64_t __ctf_tmp_int64; \ | |
537 | switch (sizeof(_type)) { \ | |
538 | case 1: \ | |
539 | { \ | |
540 | union { _type t; int8_t v; } __tmp = { (_type) (_src) }; \ | |
541 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ | |
542 | break; \ | |
543 | } \ | |
544 | case 2: \ | |
545 | { \ | |
546 | union { _type t; int16_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
547 | if (_byte_order != __BYTE_ORDER) \ |
548 | __swab16s(&__tmp.v); \ | |
f127e61e MD |
549 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
550 | break; \ | |
551 | } \ | |
552 | case 4: \ | |
553 | { \ | |
554 | union { _type t; int32_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
555 | if (_byte_order != __BYTE_ORDER) \ |
556 | __swab32s(&__tmp.v); \ | |
f127e61e MD |
557 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
558 | break; \ | |
559 | } \ | |
560 | case 8: \ | |
561 | { \ | |
562 | union { _type t; int64_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
563 | if (_byte_order != __BYTE_ORDER) \ |
564 | __swab64s(&__tmp.v); \ | |
f127e61e MD |
565 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
566 | break; \ | |
567 | } \ | |
568 | default: \ | |
569 | BUG_ON(1); \ | |
570 | }; \ | |
571 | memcpy(__stack_data, &__ctf_tmp_int64, sizeof(int64_t)); \ | |
572 | } else { \ | |
573 | uint64_t __ctf_tmp_uint64; \ | |
574 | switch (sizeof(_type)) { \ | |
575 | case 1: \ | |
576 | { \ | |
577 | union { _type t; uint8_t v; } __tmp = { (_type) (_src) }; \ | |
578 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ | |
579 | break; \ | |
580 | } \ | |
581 | case 2: \ | |
582 | { \ | |
583 | union { _type t; uint16_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
584 | if (_byte_order != __BYTE_ORDER) \ |
585 | __swab16s(&__tmp.v); \ | |
f127e61e MD |
586 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
587 | break; \ | |
588 | } \ | |
589 | case 4: \ | |
590 | { \ | |
591 | union { _type t; uint32_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
592 | if (_byte_order != __BYTE_ORDER) \ |
593 | __swab32s(&__tmp.v); \ | |
f127e61e MD |
594 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
595 | break; \ | |
596 | } \ | |
597 | case 8: \ | |
598 | { \ | |
599 | union { _type t; uint64_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
600 | if (_byte_order != __BYTE_ORDER) \ |
601 | __swab64s(&__tmp.v); \ | |
f127e61e MD |
602 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
603 | break; \ | |
604 | } \ | |
605 | default: \ | |
606 | BUG_ON(1); \ | |
607 | }; \ | |
608 | memcpy(__stack_data, &__ctf_tmp_uint64, sizeof(uint64_t)); \ | |
609 | } \ | |
610 | __stack_data += sizeof(int64_t); | |
611 | ||
612 | #undef _ctf_integer_ext_isuser0 | |
613 | #define _ctf_integer_ext_isuser0(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
614 | _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) | |
615 | ||
616 | #undef _ctf_integer_ext_isuser1 | |
617 | #define _ctf_integer_ext_isuser1(_type, _item, _user_src, _byte_order, _base, _nowrite) \ | |
3c8ebbc8 MD |
618 | { \ |
619 | union { \ | |
620 | char __array[sizeof(_user_src)]; \ | |
621 | __typeof__(_user_src) __v; \ | |
622 | } __tmp_fetch; \ | |
623 | if (lib_ring_buffer_copy_from_user_check_nofault(__tmp_fetch.__array, \ | |
624 | &(_user_src), sizeof(_user_src))) \ | |
625 | memset(__tmp_fetch.__array, 0, sizeof(__tmp_fetch.__array)); \ | |
626 | _ctf_integer_ext_fetched(_type, _item, __tmp_fetch.__v, _byte_order, _base, _nowrite) \ | |
f127e61e | 627 | } |
e763dbf5 | 628 | |
f127e61e MD |
629 | #undef _ctf_integer_ext |
630 | #define _ctf_integer_ext(_type, _item, _user_src, _byte_order, _base, _user, _nowrite) \ | |
631 | _ctf_integer_ext_isuser##_user(_type, _item, _user_src, _byte_order, _base, _nowrite) | |
632 | ||
633 | #undef _ctf_array_encoded | |
3834b99f | 634 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
635 | { \ |
636 | unsigned long __ctf_tmp_ulong = (unsigned long) (_length); \ | |
637 | const void *__ctf_tmp_ptr = (_src); \ | |
638 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ | |
639 | __stack_data += sizeof(unsigned long); \ | |
6b272cda MD |
640 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
641 | __stack_data += sizeof(void *); \ | |
f127e61e MD |
642 | } |
643 | ||
43803cf2 MD |
644 | #undef _ctf_array_bitfield |
645 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
3834b99f | 646 | _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite) |
43803cf2 | 647 | |
f127e61e MD |
648 | #undef _ctf_sequence_encoded |
649 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 650 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
651 | { \ |
652 | unsigned long __ctf_tmp_ulong = (unsigned long) (_src_length); \ | |
653 | const void *__ctf_tmp_ptr = (_src); \ | |
654 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ | |
655 | __stack_data += sizeof(unsigned long); \ | |
6b272cda MD |
656 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
657 | __stack_data += sizeof(void *); \ | |
f127e61e MD |
658 | } |
659 | ||
43803cf2 MD |
660 | #undef _ctf_sequence_bitfield |
661 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
662 | _length_type, _src_length, \ | |
663 | _user, _nowrite) \ | |
664 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
665 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
666 | ||
f127e61e MD |
667 | #undef _ctf_string |
668 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
669 | { \ | |
1d84e8e7 MD |
670 | const void *__ctf_tmp_ptr = \ |
671 | ((_src) ? (_src) : __LTTNG_NULL_STRING); \ | |
6b272cda MD |
672 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
673 | __stack_data += sizeof(void *); \ | |
f127e61e | 674 | } |
c6e3f225 | 675 | |
141ddf28 MD |
676 | #undef _ctf_enum |
677 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
678 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
679 | ||
e763dbf5 | 680 | #undef TP_PROTO |
f127e61e | 681 | #define TP_PROTO(...) __VA_ARGS__ |
e763dbf5 | 682 | |
f127e61e MD |
683 | #undef TP_FIELDS |
684 | #define TP_FIELDS(...) __VA_ARGS__ | |
e763dbf5 | 685 | |
7ca580f8 MD |
686 | #undef TP_locvar |
687 | #define TP_locvar(...) __VA_ARGS__ | |
688 | ||
f127e61e | 689 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 690 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e | 691 | static inline \ |
99d223ad | 692 | void __event_prepare_interpreter_stack__##_name(char *__stack_data, \ |
f127e61e | 693 | void *__tp_locvar) \ |
e763dbf5 | 694 | { \ |
7ca580f8 MD |
695 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
696 | \ | |
f127e61e | 697 | _fields \ |
e763dbf5 MD |
698 | } |
699 | ||
f127e61e | 700 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 701 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e | 702 | static inline \ |
99d223ad | 703 | void __event_prepare_interpreter_stack__##_name(char *__stack_data, \ |
f127e61e | 704 | void *__tp_locvar, _proto) \ |
d3de7f14 | 705 | { \ |
7ca580f8 MD |
706 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
707 | \ | |
f127e61e | 708 | _fields \ |
d3de7f14 MD |
709 | } |
710 | ||
e763dbf5 MD |
711 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
712 | ||
e763dbf5 | 713 | /* |
f127e61e | 714 | * Stage 5 of the trace events. |
40652b65 | 715 | * |
f127e61e | 716 | * Create static inline function that calculates event payload alignment. |
3c4ffab9 MD |
717 | */ |
718 | ||
f127e61e | 719 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb MD |
720 | #include <lttng/events-reset.h> |
721 | #include <lttng/events-write.h> | |
3c4ffab9 | 722 | |
f127e61e MD |
723 | #undef _ctf_integer_ext |
724 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ | |
725 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
3c4ffab9 | 726 | |
f127e61e | 727 | #undef _ctf_array_encoded |
3834b99f | 728 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e | 729 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); |
3c4ffab9 | 730 | |
43803cf2 MD |
731 | #undef _ctf_array_bitfield |
732 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
3834b99f | 733 | _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite) |
43803cf2 | 734 | |
f127e61e MD |
735 | #undef _ctf_sequence_encoded |
736 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 737 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
738 | __event_align = max_t(size_t, __event_align, lttng_alignof(_length_type)); \ |
739 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
64c796d8 | 740 | |
43803cf2 MD |
741 | #undef _ctf_sequence_bitfield |
742 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
743 | _length_type, _src_length, \ | |
744 | _user, _nowrite) \ | |
745 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
746 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
747 | ||
f127e61e MD |
748 | #undef _ctf_string |
749 | #define _ctf_string(_item, _src, _user, _nowrite) | |
64c796d8 | 750 | |
141ddf28 MD |
751 | #undef _ctf_enum |
752 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
753 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
754 | ||
f64dd4be MD |
755 | #undef ctf_align |
756 | #define ctf_align(_type) \ | |
757 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
758 | ||
f127e61e MD |
759 | #undef TP_PROTO |
760 | #define TP_PROTO(...) __VA_ARGS__ | |
84da5206 | 761 | |
f127e61e MD |
762 | #undef TP_FIELDS |
763 | #define TP_FIELDS(...) __VA_ARGS__ | |
c6e3f225 | 764 | |
f127e61e MD |
765 | #undef TP_locvar |
766 | #define TP_locvar(...) __VA_ARGS__ | |
3c4ffab9 | 767 | |
f64dd4be MD |
768 | #undef ctf_custom_field |
769 | #define ctf_custom_field(_type, _item, _code) _code | |
770 | ||
771 | #undef ctf_custom_code | |
772 | #define ctf_custom_code(...) \ | |
773 | { \ | |
774 | __VA_ARGS__ \ | |
775 | } | |
776 | ||
f127e61e | 777 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 778 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
779 | static inline size_t __event_get_align__##_name(void *__tp_locvar, _proto) \ |
780 | { \ | |
781 | size_t __event_align = 1; \ | |
782 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ | |
783 | \ | |
784 | _fields \ | |
785 | return __event_align; \ | |
786 | } | |
3c4ffab9 | 787 | |
3bc29f0a | 788 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 789 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
790 | static inline size_t __event_get_align__##_name(void *__tp_locvar) \ |
791 | { \ | |
792 | size_t __event_align = 1; \ | |
793 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ | |
794 | \ | |
795 | _fields \ | |
796 | return __event_align; \ | |
797 | } | |
d3de7f14 | 798 | |
3c4ffab9 MD |
799 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
800 | ||
3c4ffab9 | 801 | /* |
f127e61e | 802 | * Stage 6 of tracepoint event generation. |
e763dbf5 | 803 | * |
f127e61e MD |
804 | * Create the probe function. This function calls event size calculation |
805 | * and writes event data into the buffer. | |
40652b65 MD |
806 | */ |
807 | ||
f127e61e | 808 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb MD |
809 | #include <lttng/events-reset.h> |
810 | #include <lttng/events-write.h> | |
c6e3f225 | 811 | |
f127e61e MD |
812 | #undef _ctf_integer_ext_fetched |
813 | #define _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
e763dbf5 | 814 | { \ |
f127e61e MD |
815 | _type __tmp = _src; \ |
816 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\ | |
aaa4004a | 817 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ |
f127e61e MD |
818 | } |
819 | ||
820 | #undef _ctf_integer_ext_isuser0 | |
821 | #define _ctf_integer_ext_isuser0(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
822 | _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) | |
823 | ||
824 | #undef _ctf_integer_ext_isuser1 | |
825 | #define _ctf_integer_ext_isuser1(_type, _item, _user_src, _byte_order, _base, _nowrite) \ | |
826 | { \ | |
3c8ebbc8 MD |
827 | union { \ |
828 | char __array[sizeof(_user_src)]; \ | |
829 | __typeof__(_user_src) __v; \ | |
830 | } __tmp_fetch; \ | |
831 | if (lib_ring_buffer_copy_from_user_check_nofault(__tmp_fetch.__array, \ | |
832 | &(_user_src), sizeof(_user_src))) \ | |
833 | memset(__tmp_fetch.__array, 0, sizeof(__tmp_fetch.__array)); \ | |
834 | _ctf_integer_ext_fetched(_type, _item, __tmp_fetch.__v, _byte_order, _base, _nowrite) \ | |
f127e61e MD |
835 | } |
836 | ||
837 | #undef _ctf_integer_ext | |
838 | #define _ctf_integer_ext(_type, _item, _user_src, _byte_order, _base, _user, _nowrite) \ | |
839 | _ctf_integer_ext_isuser##_user(_type, _item, _user_src, _byte_order, _base, _nowrite) | |
840 | ||
841 | #undef _ctf_array_encoded | |
3834b99f | 842 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
843 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ |
844 | if (_user) { \ | |
845 | __chan->ops->event_write_from_user(&__ctx, _src, sizeof(_type) * (_length)); \ | |
846 | } else { \ | |
847 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); \ | |
848 | } | |
849 | ||
43803cf2 MD |
850 | #if (__BYTE_ORDER == __LITTLE_ENDIAN) |
851 | #undef _ctf_array_bitfield | |
852 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
853 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
854 | if (_user) { \ | |
855 | __chan->ops->event_write_from_user(&__ctx, _src, sizeof(_type) * (_length)); \ | |
856 | } else { \ | |
857 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); \ | |
858 | } | |
859 | #else /* #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
860 | /* | |
861 | * For big endian, we need to byteswap into little endian. | |
862 | */ | |
863 | #undef _ctf_array_bitfield | |
864 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
865 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
866 | { \ | |
867 | size_t _i; \ | |
868 | \ | |
869 | for (_i = 0; _i < (_length); _i++) { \ | |
870 | _type _tmp; \ | |
871 | \ | |
872 | if (_user) { \ | |
873 | if (get_user(_tmp, (_type *) _src + _i)) \ | |
874 | _tmp = 0; \ | |
875 | } else { \ | |
876 | _tmp = ((_type *) _src)[_i]; \ | |
877 | } \ | |
878 | switch (sizeof(_type)) { \ | |
879 | case 1: \ | |
880 | break; \ | |
881 | case 2: \ | |
882 | _tmp = cpu_to_le16(_tmp); \ | |
883 | break; \ | |
884 | case 4: \ | |
885 | _tmp = cpu_to_le32(_tmp); \ | |
886 | break; \ | |
887 | case 8: \ | |
888 | _tmp = cpu_to_le64(_tmp); \ | |
889 | break; \ | |
890 | default: \ | |
891 | BUG_ON(1); \ | |
892 | } \ | |
893 | __chan->ops->event_write(&__ctx, &_tmp, sizeof(_type)); \ | |
894 | } \ | |
895 | } | |
896 | #endif /* #else #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
897 | ||
f127e61e MD |
898 | #undef _ctf_sequence_encoded |
899 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 900 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
84da5206 | 901 | { \ |
114667d5 | 902 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx]; \ |
f127e61e MD |
903 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
904 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
84da5206 | 905 | } \ |
f127e61e MD |
906 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ |
907 | if (_user) { \ | |
908 | __chan->ops->event_write_from_user(&__ctx, _src, \ | |
909 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
910 | } else { \ | |
911 | __chan->ops->event_write(&__ctx, _src, \ | |
912 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
913 | } | |
914 | ||
43803cf2 MD |
915 | #if (__BYTE_ORDER == __LITTLE_ENDIAN) |
916 | #undef _ctf_sequence_bitfield | |
917 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
918 | _length_type, _src_length, \ | |
919 | _user, _nowrite) \ | |
920 | { \ | |
114667d5 | 921 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx] * sizeof(_type) * CHAR_BIT; \ |
43803cf2 MD |
922 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
923 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
924 | } \ | |
925 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
926 | if (_user) { \ | |
927 | __chan->ops->event_write_from_user(&__ctx, _src, \ | |
928 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
929 | } else { \ | |
930 | __chan->ops->event_write(&__ctx, _src, \ | |
931 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
932 | } | |
933 | #else /* #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
934 | /* | |
935 | * For big endian, we need to byteswap into little endian. | |
936 | */ | |
937 | #undef _ctf_sequence_bitfield | |
938 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
939 | _length_type, _src_length, \ | |
940 | _user, _nowrite) \ | |
941 | { \ | |
114667d5 | 942 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx] * sizeof(_type) * CHAR_BIT; \ |
43803cf2 MD |
943 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
944 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
945 | } \ | |
946 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
947 | { \ | |
948 | size_t _i, _length; \ | |
949 | \ | |
950 | _length = __get_dynamic_len(dest); \ | |
951 | for (_i = 0; _i < _length; _i++) { \ | |
952 | _type _tmp; \ | |
953 | \ | |
954 | if (_user) { \ | |
955 | if (get_user(_tmp, (_type *) _src + _i)) \ | |
956 | _tmp = 0; \ | |
957 | } else { \ | |
958 | _tmp = ((_type *) _src)[_i]; \ | |
959 | } \ | |
960 | switch (sizeof(_type)) { \ | |
961 | case 1: \ | |
962 | break; \ | |
963 | case 2: \ | |
964 | _tmp = cpu_to_le16(_tmp); \ | |
965 | break; \ | |
966 | case 4: \ | |
967 | _tmp = cpu_to_le32(_tmp); \ | |
968 | break; \ | |
969 | case 8: \ | |
970 | _tmp = cpu_to_le64(_tmp); \ | |
971 | break; \ | |
972 | default: \ | |
973 | BUG_ON(1); \ | |
974 | } \ | |
975 | __chan->ops->event_write(&__ctx, &_tmp, sizeof(_type)); \ | |
976 | } \ | |
977 | } | |
978 | #endif /* #else #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
979 | ||
f127e61e MD |
980 | #undef _ctf_string |
981 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
f127e61e | 982 | if (_user) { \ |
1d84e8e7 | 983 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(*(_src))); \ |
f127e61e MD |
984 | __chan->ops->event_strcpy_from_user(&__ctx, _src, \ |
985 | __get_dynamic_len(dest)); \ | |
986 | } else { \ | |
1d84e8e7 MD |
987 | const char *__ctf_tmp_string = \ |
988 | ((_src) ? (_src) : __LTTNG_NULL_STRING); \ | |
989 | lib_ring_buffer_align_ctx(&__ctx, \ | |
990 | lttng_alignof(*__ctf_tmp_string)); \ | |
991 | __chan->ops->event_strcpy(&__ctx, __ctf_tmp_string, \ | |
f127e61e MD |
992 | __get_dynamic_len(dest)); \ |
993 | } | |
e763dbf5 | 994 | |
141ddf28 MD |
995 | #undef _ctf_enum |
996 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
997 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
f64dd4be MD |
998 | |
999 | #undef ctf_align | |
1000 | #define ctf_align(_type) \ | |
1001 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); | |
1002 | ||
1003 | #undef ctf_custom_field | |
1004 | #define ctf_custom_field(_type, _item, _code) _code | |
1005 | ||
1006 | #undef ctf_custom_code | |
1007 | #define ctf_custom_code(...) \ | |
1008 | { \ | |
1009 | __VA_ARGS__ \ | |
1010 | } | |
1011 | ||
e763dbf5 | 1012 | /* Beware: this get len actually consumes the len value */ |
f127e61e | 1013 | #undef __get_dynamic_len |
114667d5 | 1014 | #define __get_dynamic_len(field) this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx++] |
e763dbf5 MD |
1015 | |
1016 | #undef TP_PROTO | |
f127e61e | 1017 | #define TP_PROTO(...) __VA_ARGS__ |
e763dbf5 MD |
1018 | |
1019 | #undef TP_ARGS | |
f127e61e | 1020 | #define TP_ARGS(...) __VA_ARGS__ |
e763dbf5 | 1021 | |
f127e61e MD |
1022 | #undef TP_FIELDS |
1023 | #define TP_FIELDS(...) __VA_ARGS__ | |
e763dbf5 | 1024 | |
7ca580f8 MD |
1025 | #undef TP_locvar |
1026 | #define TP_locvar(...) __VA_ARGS__ | |
1027 | ||
265822ae MD |
1028 | #undef TP_code_pre |
1029 | #define TP_code_pre(...) __VA_ARGS__ | |
1030 | ||
1031 | #undef TP_code_post | |
1032 | #define TP_code_post(...) __VA_ARGS__ | |
7ca580f8 | 1033 | |
c337ddc2 MD |
1034 | /* |
1035 | * For state dump, check that "session" argument (mandatory) matches the | |
1036 | * session this event belongs to. Ensures that we write state dump data only | |
1037 | * into the started session, not into all sessions. | |
1038 | */ | |
1039 | #ifdef TP_SESSION_CHECK | |
1040 | #define _TP_SESSION_CHECK(session, csession) (session == csession) | |
1041 | #else /* TP_SESSION_CHECK */ | |
1042 | #define _TP_SESSION_CHECK(session, csession) 1 | |
1043 | #endif /* TP_SESSION_CHECK */ | |
1044 | ||
f9771d39 | 1045 | /* |
f127e61e MD |
1046 | * Using twice size for filter stack data to hold size and pointer for |
1047 | * each field (worse case). For integers, max size required is 64-bit. | |
1048 | * Same for double-precision floats. Those fit within | |
1049 | * 2*sizeof(unsigned long) for all supported architectures. | |
1050 | * Perform UNION (||) of filter runtime list. | |
f9771d39 | 1051 | */ |
e2d5dbc7 MD |
1052 | #undef _LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
1053 | #define _LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _data_proto, _locvar_args, _locvar, _code_pre, _fields, _code_post) \ | |
1054 | static void __event_probe__##_name(_data_proto) \ | |
1055 | { \ | |
1056 | struct probe_local_vars { _locvar }; \ | |
1057 | struct lttng_kernel_event_common *__event = __data; \ | |
346cb5ee | 1058 | struct lttng_kernel_probe_ctx __lttng_probe_ctx = { \ |
e2d5dbc7 MD |
1059 | .event = __event, \ |
1060 | .interruptible = !irqs_disabled(), \ | |
1061 | }; \ | |
1062 | union { \ | |
1063 | size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)]; \ | |
1064 | char __interpreter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \ | |
1065 | } __stackvar; \ | |
1066 | size_t __orig_dynamic_len_offset, __dynamic_len_idx __attribute__((unused)); \ | |
1067 | struct probe_local_vars __tp_locvar; \ | |
1068 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
1069 | &__tp_locvar; \ | |
1070 | bool __interpreter_stack_prepared = false; \ | |
1071 | \ | |
1072 | switch (__event->type) { \ | |
1073 | case LTTNG_KERNEL_EVENT_TYPE_RECORDER: \ | |
1074 | { \ | |
1075 | struct lttng_kernel_event_recorder *__event_recorder = \ | |
1076 | container_of(__event, struct lttng_kernel_event_recorder, parent); \ | |
ac847066 MD |
1077 | struct lttng_kernel_channel_buffer *__chan = __event_recorder->chan; \ |
1078 | struct lttng_kernel_session *__session = __chan->parent.session; \ | |
a2fa977a | 1079 | struct lttng_kernel_id_tracker_rcu *__lf; \ |
e2d5dbc7 MD |
1080 | \ |
1081 | if (!_TP_SESSION_CHECK(session, __session)) \ | |
1082 | return; \ | |
1083 | if (unlikely(!LTTNG_READ_ONCE(__session->active))) \ | |
1084 | return; \ | |
ac847066 | 1085 | if (unlikely(!LTTNG_READ_ONCE(__chan->parent.enabled))) \ |
e2d5dbc7 MD |
1086 | return; \ |
1087 | __lf = lttng_rcu_dereference(__session->pid_tracker.p); \ | |
1088 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, current->tgid))) \ | |
1089 | return; \ | |
1090 | __lf = lttng_rcu_dereference(__session->vpid_tracker.p); \ | |
1091 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, task_tgid_vnr(current)))) \ | |
1092 | return; \ | |
1093 | __lf = lttng_rcu_dereference(__session->uid_tracker.p); \ | |
1094 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
1095 | lttng_current_uid()))) \ | |
1096 | return; \ | |
1097 | __lf = lttng_rcu_dereference(__session->vuid_tracker.p); \ | |
1098 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
1099 | lttng_current_vuid()))) \ | |
1100 | return; \ | |
1101 | __lf = lttng_rcu_dereference(__session->gid_tracker.p); \ | |
1102 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
1103 | lttng_current_gid()))) \ | |
1104 | return; \ | |
1105 | __lf = lttng_rcu_dereference(__session->vgid_tracker.p); \ | |
1106 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
1107 | lttng_current_vgid()))) \ | |
1108 | return; \ | |
1109 | break; \ | |
1110 | } \ | |
1111 | case LTTNG_KERNEL_EVENT_TYPE_NOTIFIER: \ | |
1112 | break; \ | |
1113 | default: \ | |
1114 | WARN_ON_ONCE(1); \ | |
1115 | } \ | |
1116 | if (unlikely(!READ_ONCE(__event->enabled))) \ | |
1117 | return; \ | |
1118 | __orig_dynamic_len_offset = this_cpu_ptr(<tng_dynamic_len_stack)->offset; \ | |
1119 | __dynamic_len_idx = __orig_dynamic_len_offset; \ | |
1120 | _code_pre \ | |
1121 | if (unlikely(READ_ONCE(__event->eval_filter))) { \ | |
e2d5dbc7 MD |
1122 | __event_prepare_interpreter_stack__##_name(__stackvar.__interpreter_stack_data, \ |
1123 | _locvar_args); \ | |
1124 | __interpreter_stack_prepared = true; \ | |
8a445457 MD |
1125 | if (likely(__event->run_filter(__event, \ |
1126 | __stackvar.__interpreter_stack_data, &__lttng_probe_ctx, NULL) != LTTNG_KERNEL_EVENT_FILTER_ACCEPT)) \ | |
e2d5dbc7 MD |
1127 | goto __post; \ |
1128 | } \ | |
1129 | switch (__event->type) { \ | |
1130 | case LTTNG_KERNEL_EVENT_TYPE_RECORDER: \ | |
1131 | { \ | |
1132 | struct lttng_kernel_event_recorder *__event_recorder = \ | |
1133 | container_of(__event, struct lttng_kernel_event_recorder, parent); \ | |
ac847066 | 1134 | struct lttng_kernel_channel_buffer *__chan = __event_recorder->chan; \ |
e27e4381 | 1135 | struct lttng_kernel_ring_buffer_ctx __ctx; \ |
e2d5dbc7 MD |
1136 | ssize_t __event_len; \ |
1137 | size_t __event_align; \ | |
1138 | int __ret; \ | |
1139 | \ | |
1140 | __event_len = __event_get_size__##_name(_locvar_args); \ | |
1141 | if (unlikely(__event_len < 0)) { \ | |
ac847066 | 1142 | __chan->ops->lost_event_too_big(__chan); \ |
e2d5dbc7 MD |
1143 | goto __post; \ |
1144 | } \ | |
1145 | __event_align = __event_get_align__##_name(_locvar_args); \ | |
c7d9db61 MD |
1146 | lib_ring_buffer_ctx_init(&__ctx, __event_recorder, __event_len, \ |
1147 | __event_align, &__lttng_probe_ctx); \ | |
cefd899f | 1148 | __ret = __chan->ops->event_reserve(&__ctx); \ |
e2d5dbc7 MD |
1149 | if (__ret < 0) \ |
1150 | goto __post; \ | |
1151 | _fields \ | |
1152 | __chan->ops->event_commit(&__ctx); \ | |
1153 | break; \ | |
1154 | } \ | |
1155 | case LTTNG_KERNEL_EVENT_TYPE_NOTIFIER: \ | |
1156 | { \ | |
1157 | struct lttng_kernel_event_notifier *__event_notifier = \ | |
1158 | container_of(__event, struct lttng_kernel_event_notifier, parent); \ | |
1159 | struct lttng_kernel_notification_ctx __notif_ctx; \ | |
1160 | \ | |
1161 | __notif_ctx.eval_capture = LTTNG_READ_ONCE(__event_notifier->eval_capture); \ | |
1162 | if (unlikely(!__interpreter_stack_prepared && __notif_ctx.eval_capture)) \ | |
1163 | __event_prepare_interpreter_stack__##_name( \ | |
1164 | __stackvar.__interpreter_stack_data, \ | |
1165 | _locvar_args); \ | |
1166 | \ | |
1167 | __event_notifier->notification_send(__event_notifier, \ | |
e2d5dbc7 | 1168 | __stackvar.__interpreter_stack_data, \ |
a775608d | 1169 | &__lttng_probe_ctx, \ |
e2d5dbc7 MD |
1170 | &__notif_ctx); \ |
1171 | break; \ | |
1172 | } \ | |
1173 | default: \ | |
1174 | WARN_ON_ONCE(1); \ | |
1175 | } \ | |
1176 | __post: \ | |
1177 | _code_post \ | |
1178 | barrier(); /* use before un-reserve. */ \ | |
1179 | this_cpu_ptr(<tng_dynamic_len_stack)->offset = __orig_dynamic_len_offset; \ | |
1180 | return; \ | |
1181 | } | |
1182 | ||
3bc29f0a | 1183 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 1184 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
e2d5dbc7 MD |
1185 | _LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, PARAMS(void *__data, _proto), PARAMS(tp_locvar, _args), \ |
1186 | PARAMS(_locvar), PARAMS(_code_pre), PARAMS(_fields), PARAMS(_code_post)) | |
e763dbf5 | 1187 | |
3bc29f0a | 1188 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 1189 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
e2d5dbc7 MD |
1190 | _LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, PARAMS(void *__data), PARAMS(tp_locvar), PARAMS(_locvar), \ |
1191 | PARAMS(_code_pre), PARAMS(_fields), PARAMS(_code_post)) | |
f7bdf4db | 1192 | |
e763dbf5 MD |
1193 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
1194 | ||
f127e61e MD |
1195 | #undef __get_dynamic_len |
1196 | ||
325e5da6 MD |
1197 | /* |
1198 | * Stage 7.1 of the trace events. | |
f127e61e MD |
1199 | * |
1200 | * Create event descriptions. | |
1201 | */ | |
1202 | ||
1203 | /* Named field types must be defined in lttng-types.h */ | |
1204 | ||
3b4aafcb | 1205 | #include <lttng/events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
f127e61e | 1206 | |
f127e61e MD |
1207 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS |
1208 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
437d5aa5 MD |
1209 | static const struct lttng_kernel_event_desc __event_desc___##_map = { \ |
1210 | .event_name = #_map, \ | |
1211 | .event_kname = #_name, \ | |
e69abdfd | 1212 | .tp_class = <tng_kernel__event_class___##_template, \ |
325e5da6 | 1213 | .probe_desc = &TP_ID(__probe_desc___, TRACE_SYSTEM), \ |
f127e61e MD |
1214 | .owner = THIS_MODULE, \ |
1215 | }; | |
1216 | ||
1217 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
1218 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
1219 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) | |
1220 | ||
325e5da6 MD |
1221 | #define TP_ID1(_token, _system) _token##_system |
1222 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1223 | ||
f127e61e MD |
1224 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
1225 | ||
325e5da6 MD |
1226 | #undef TP_ID1 |
1227 | #undef TP_ID | |
1228 | ||
f127e61e MD |
1229 | /* |
1230 | * Stage 8 of the trace events. | |
1231 | * | |
1232 | * Create an array of event description pointers. | |
1233 | */ | |
1234 | ||
3b4aafcb | 1235 | #include <lttng/events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
f127e61e MD |
1236 | |
1237 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
1238 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
1239 | &__event_desc___##_map, | |
1240 | ||
1241 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
1242 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
1243 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) | |
1244 | ||
1245 | #define TP_ID1(_token, _system) _token##_system | |
1246 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1247 | ||
437d5aa5 | 1248 | static const struct lttng_kernel_event_desc *TP_ID(__event_desc___, TRACE_SYSTEM)[] = { |
f127e61e MD |
1249 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
1250 | }; | |
1251 | ||
1252 | #undef TP_ID1 | |
1253 | #undef TP_ID | |
1254 | ||
1255 | /* | |
1256 | * Stage 9 of the trace events. | |
1257 | * | |
1258 | * Create a toplevel descriptor for the whole probe. | |
1259 | */ | |
1260 | ||
1261 | #define TP_ID1(_token, _system) _token##_system | |
1262 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1263 | ||
1264 | /* non-const because list head will be modified when registered. */ | |
437d5aa5 MD |
1265 | static __used struct lttng_kernel_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = { |
1266 | .provider_name = __stringify(TRACE_SYSTEM), | |
f127e61e MD |
1267 | .event_desc = TP_ID(__event_desc___, TRACE_SYSTEM), |
1268 | .nr_events = ARRAY_SIZE(TP_ID(__event_desc___, TRACE_SYSTEM)), | |
1269 | .head = { NULL, NULL }, | |
1270 | .lazy_init_head = { NULL, NULL }, | |
1271 | .lazy = 0, | |
1272 | }; | |
1273 | ||
1274 | #undef TP_ID1 | |
1275 | #undef TP_ID | |
1276 | ||
3afe7aac | 1277 | /* |
c099397a | 1278 | * Stage 10 of the trace events. |
3afe7aac MD |
1279 | * |
1280 | * Register/unregister probes at module load/unload. | |
1281 | */ | |
1282 | ||
3b4aafcb | 1283 | #include <lttng/events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
3afe7aac MD |
1284 | |
1285 | #define TP_ID1(_token, _system) _token##_system | |
1286 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1287 | #define module_init_eval1(_token, _system) module_init(_token##_system) | |
1288 | #define module_init_eval(_token, _system) module_init_eval1(_token, _system) | |
1289 | #define module_exit_eval1(_token, _system) module_exit(_token##_system) | |
1290 | #define module_exit_eval(_token, _system) module_exit_eval1(_token, _system) | |
1291 | ||
2655f9ad | 1292 | #ifndef TP_MODULE_NOINIT |
3afe7aac MD |
1293 | static int TP_ID(__lttng_events_init__, TRACE_SYSTEM)(void) |
1294 | { | |
263b6c88 | 1295 | wrapper_vmalloc_sync_mappings(); |
c93ed3b0 | 1296 | return lttng_kernel_probe_register(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
1297 | } |
1298 | ||
3afe7aac MD |
1299 | static void TP_ID(__lttng_events_exit__, TRACE_SYSTEM)(void) |
1300 | { | |
c93ed3b0 | 1301 | lttng_kernel_probe_unregister(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
1302 | } |
1303 | ||
2655f9ad MD |
1304 | #ifndef TP_MODULE_NOAUTOLOAD |
1305 | module_init_eval(__lttng_events_init__, TRACE_SYSTEM); | |
3afe7aac | 1306 | module_exit_eval(__lttng_events_exit__, TRACE_SYSTEM); |
259b6cb3 | 1307 | #endif |
3afe7aac | 1308 | |
2655f9ad MD |
1309 | #endif |
1310 | ||
3afe7aac MD |
1311 | #undef module_init_eval |
1312 | #undef module_exit_eval | |
1313 | #undef TP_ID1 | |
1314 | #undef TP_ID | |
177b3692 MD |
1315 | |
1316 | #undef TP_PROTO | |
1317 | #undef TP_ARGS |