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 | ||
6db3d13b | 211 | /* |
c099397a | 212 | * Stage 2 of the trace events. |
6db3d13b MD |
213 | * |
214 | * Create event field type metadata section. | |
215 | * Each event produce an array of fields. | |
216 | */ | |
217 | ||
f127e61e | 218 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb MD |
219 | #include <lttng/events-reset.h> |
220 | #include <lttng/events-write.h> | |
221 | #include <lttng/events-nowrite.h> | |
6db3d13b | 222 | |
f127e61e | 223 | #undef _ctf_integer_ext |
437d5aa5 MD |
224 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ |
225 | lttng_kernel_static_event_field(#_item, \ | |
226 | lttng_kernel_static_type_integer_from_type(_type, _byte_order, _base), \ | |
227 | _nowrite, _user, 0), | |
40652b65 | 228 | |
f127e61e | 229 | #undef _ctf_array_encoded |
ceabb767 MD |
230 | #define _ctf_array_encoded(_type, _item, _src, _length, \ |
231 | _encoding, _byte_order, _elem_type_base, _user, _nowrite) \ | |
437d5aa5 MD |
232 | lttng_kernel_static_event_field(#_item, \ |
233 | lttng_kernel_static_type_array(_length, \ | |
234 | lttng_kernel_static_type_integer_from_type(_type, _byte_order, _elem_type_base), \ | |
235 | 0, \ | |
236 | _encoding), \ | |
237 | _nowrite, _user, 0), | |
40652b65 | 238 | |
43803cf2 MD |
239 | #undef _ctf_array_bitfield |
240 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
437d5aa5 MD |
241 | lttng_kernel_static_event_field(#_item, \ |
242 | lttng_kernel_static_type_array((_length) * sizeof(_type) * CHAR_BIT, \ | |
243 | lttng_kernel_static_type_integer(1, 1, 0, __LITTLE_ENDIAN, 10), \ | |
244 | lttng_alignof(_type), \ | |
245 | none), \ | |
246 | _nowrite, _user, 0), | |
43803cf2 | 247 | |
f127e61e MD |
248 | #undef _ctf_sequence_encoded |
249 | #define _ctf_sequence_encoded(_type, _item, _src, \ | |
250 | _length_type, _src_length, _encoding, \ | |
ceabb767 | 251 | _byte_order, _elem_type_base, _user, _nowrite) \ |
437d5aa5 MD |
252 | lttng_kernel_static_event_field("_" #_item "_length", \ |
253 | lttng_kernel_static_type_integer_from_type(_length_type, __BYTE_ORDER, 10), \ | |
254 | _nowrite, 0, 1), \ | |
255 | lttng_kernel_static_event_field(#_item, \ | |
f0039724 | 256 | lttng_kernel_static_type_sequence(NULL, /* Use previous field. */ \ |
437d5aa5 MD |
257 | lttng_kernel_static_type_integer_from_type(_type, _byte_order, _elem_type_base), \ |
258 | 0, \ | |
259 | _encoding), \ | |
260 | _nowrite, _user, 0), | |
43803cf2 MD |
261 | |
262 | #undef _ctf_sequence_bitfield | |
263 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
264 | _length_type, _src_length, \ | |
265 | _user, _nowrite) \ | |
437d5aa5 MD |
266 | lttng_kernel_static_event_field("_" #_item "_length", \ |
267 | lttng_kernel_static_type_integer_from_type(_length_type, __BYTE_ORDER, 10), \ | |
268 | _nowrite, 0, 1), \ | |
269 | lttng_kernel_static_event_field(#_item, \ | |
f0039724 | 270 | lttng_kernel_static_type_sequence(NULL, /* Use previous field. */ \ |
437d5aa5 MD |
271 | lttng_kernel_static_type_integer(1, 1, 0, __LITTLE_ENDIAN, 10), \ |
272 | lttng_alignof(_type), \ | |
273 | none), \ | |
274 | _nowrite, _user, 0), | |
40652b65 | 275 | |
f127e61e MD |
276 | #undef _ctf_string |
277 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
437d5aa5 MD |
278 | lttng_kernel_static_event_field(#_item, \ |
279 | lttng_kernel_static_type_string(UTF8), \ | |
280 | _nowrite, _user, 0), | |
281 | ||
282 | #undef _ctf_unused | |
283 | #define _ctf_unused(_src) | |
1d12cebd | 284 | |
141ddf28 MD |
285 | #undef _ctf_enum |
286 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
437d5aa5 MD |
287 | lttng_kernel_static_event_field(#_item, \ |
288 | lttng_kernel_static_type_enum(&__enum_##_name, \ | |
289 | lttng_kernel_static_type_integer_from_type(_type, __BYTE_ORDER, 10)), \ | |
290 | _nowrite, _user, 0), | |
f64dd4be MD |
291 | |
292 | #undef ctf_custom_field | |
293 | #define ctf_custom_field(_type, _item, _code) \ | |
437d5aa5 | 294 | lttng_kernel_static_event_field(#_item, PARAMS(_type), 0, 0, 1), |
f64dd4be MD |
295 | |
296 | #undef ctf_custom_type | |
297 | #define ctf_custom_type(...) __VA_ARGS__ | |
298 | ||
f127e61e MD |
299 | #undef TP_FIELDS |
300 | #define TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */ | |
1d12cebd | 301 | |
3bc29f0a | 302 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 303 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
437d5aa5 | 304 | static const struct lttng_kernel_event_field *__event_fields___##_name[] = { \ |
f127e61e | 305 | _fields \ |
299338c8 MD |
306 | }; |
307 | ||
3bc29f0a | 308 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae MD |
309 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
310 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, PARAMS(_fields), _code_post) | |
f7bdf4db | 311 | |
16e1064f FD |
312 | #ifdef LTTNG_TRACEPOINT_TYPE_EXTERN |
313 | # undef LTTNG_TRACEPOINT_TYPE | |
314 | # define LTTNG_TRACEPOINT_TYPE(_prototype, _init) \ | |
315 | extern _prototype; | |
316 | #elif defined (LTTNG_TRACEPOINT_TYPE_DEFINE_EXPORT) | |
317 | # define LTTNG_TRACEPOINT_TYPE_VISIBILITY __attribute__((visibility("hidden"))) | |
318 | #else | |
319 | # define LTTNG_TRACEPOINT_TYPE_VISIBILITY static | |
320 | #endif | |
321 | ||
322 | #ifdef LTTNG_TRACEPOINT_TYPE_VISIBILITY | |
323 | # undef LTTNG_TRACEPOINT_TYPE | |
324 | # define LTTNG_TRACEPOINT_TYPE(_prototype, _init) \ | |
325 | LTTNG_TRACEPOINT_TYPE_VISIBILITY _prototype = _init; | |
326 | #endif | |
327 | ||
328 | # undef LTTNG_TRACEPOINT_ENUM | |
329 | # define LTTNG_TRACEPOINT_ENUM(_name, _values) \ | |
330 | LTTNG_TRACEPOINT_TYPE(PARAMS(const struct lttng_kernel_enum_desc __enum_##_name), \ | |
331 | PARAMS({ \ | |
332 | .name = #_name, \ | |
333 | .entries = __enum_values__##_name, \ | |
334 | .nr_entries = ARRAY_SIZE(__enum_values__##_name), \ | |
335 | })) | |
141ddf28 | 336 | |
437d5aa5 | 337 | #define LTTNG_CREATE_FIELD_METADATA |
299338c8 | 338 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
437d5aa5 | 339 | #undef LTTNG_CREATE_FIELD_METADATA |
299338c8 | 340 | |
16e1064f FD |
341 | #undef LTTNG_TRACEPOINT_TYPE_VISIBILITY |
342 | ||
19c57fbf | 343 | /* |
c099397a | 344 | * Stage 3 of the trace events. |
19c57fbf MD |
345 | * |
346 | * Create probe callback prototypes. | |
347 | */ | |
348 | ||
f127e61e | 349 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb | 350 | #include <lttng/events-reset.h> |
19c57fbf MD |
351 | |
352 | #undef TP_PROTO | |
f127e61e | 353 | #define TP_PROTO(...) __VA_ARGS__ |
19c57fbf | 354 | |
3bc29f0a | 355 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 356 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
19c57fbf MD |
357 | static void __event_probe__##_name(void *__data, _proto); |
358 | ||
3bc29f0a | 359 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 360 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f7bdf4db MD |
361 | static void __event_probe__##_name(void *__data); |
362 | ||
19c57fbf MD |
363 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
364 | ||
f7bdf4db MD |
365 | /* |
366 | * Stage 4 of the trace events. | |
367 | * | |
40652b65 MD |
368 | * Create static inline function that calculates event size. |
369 | */ | |
370 | ||
f127e61e | 371 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb MD |
372 | #include <lttng/events-reset.h> |
373 | #include <lttng/events-write.h> | |
6db3d13b | 374 | |
f127e61e MD |
375 | #undef _ctf_integer_ext |
376 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ | |
a90917c3 | 377 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
0d1d4002 | 378 | __event_len += sizeof(_type); |
6db3d13b | 379 | |
f127e61e | 380 | #undef _ctf_array_encoded |
3834b99f | 381 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
a90917c3 | 382 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
0d1d4002 | 383 | __event_len += sizeof(_type) * (_length); |
6db3d13b | 384 | |
43803cf2 MD |
385 | #undef _ctf_array_bitfield |
386 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
3834b99f | 387 | _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite) |
43803cf2 | 388 | |
f127e61e MD |
389 | #undef _ctf_sequence_encoded |
390 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 391 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
392 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_length_type)); \ |
393 | __event_len += sizeof(_length_type); \ | |
a90917c3 | 394 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
114667d5 MD |
395 | { \ |
396 | size_t __seqlen = (_src_length); \ | |
397 | \ | |
398 | if (unlikely(++this_cpu_ptr(<tng_dynamic_len_stack)->offset >= LTTNG_DYNAMIC_LEN_STACK_SIZE)) \ | |
399 | goto error; \ | |
400 | barrier(); /* reserve before use. */ \ | |
401 | this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = __seqlen; \ | |
402 | __event_len += sizeof(_type) * __seqlen; \ | |
403 | } | |
6db3d13b | 404 | |
43803cf2 MD |
405 | #undef _ctf_sequence_bitfield |
406 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
407 | _length_type, _src_length, \ | |
408 | _user, _nowrite) \ | |
409 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
410 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
411 | ||
d0255731 | 412 | /* |
f127e61e | 413 | * ctf_user_string includes \0. If returns 0, it faulted, so we set size to |
786b8312 | 414 | * 1 (\0 only). |
d0255731 | 415 | */ |
f127e61e MD |
416 | #undef _ctf_string |
417 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
114667d5 MD |
418 | if (unlikely(++this_cpu_ptr(<tng_dynamic_len_stack)->offset >= LTTNG_DYNAMIC_LEN_STACK_SIZE)) \ |
419 | goto error; \ | |
420 | barrier(); /* reserve before use. */ \ | |
421 | if (_user) { \ | |
422 | __event_len += this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = \ | |
96d0248a | 423 | max_t(size_t, lttng_strlen_user_inatomic(_src), 1); \ |
114667d5 MD |
424 | } else { \ |
425 | __event_len += this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = \ | |
1d84e8e7 | 426 | strlen((_src) ? (_src) : __LTTNG_NULL_STRING) + 1; \ |
114667d5 | 427 | } |
c6e3f225 | 428 | |
141ddf28 MD |
429 | #undef _ctf_enum |
430 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
431 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
432 | ||
f64dd4be MD |
433 | #undef ctf_align |
434 | #define ctf_align(_type) \ | |
435 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); | |
436 | ||
437 | #undef ctf_custom_field | |
438 | #define ctf_custom_field(_type, _item, _code) \ | |
439 | { \ | |
440 | _code \ | |
441 | } | |
442 | ||
443 | #undef ctf_custom_code | |
444 | #define ctf_custom_code(...) __VA_ARGS__ | |
445 | ||
0d1d4002 | 446 | #undef TP_PROTO |
f127e61e | 447 | #define TP_PROTO(...) __VA_ARGS__ |
6db3d13b | 448 | |
f127e61e MD |
449 | #undef TP_FIELDS |
450 | #define TP_FIELDS(...) __VA_ARGS__ | |
6db3d13b | 451 | |
7ca580f8 MD |
452 | #undef TP_locvar |
453 | #define TP_locvar(...) __VA_ARGS__ | |
454 | ||
3bc29f0a | 455 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 456 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
114667d5 | 457 | static inline ssize_t __event_get_size__##_name(void *__tp_locvar, _proto) \ |
0d1d4002 MD |
458 | { \ |
459 | size_t __event_len = 0; \ | |
d3de7f14 | 460 | unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \ |
7ca580f8 | 461 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
d3de7f14 | 462 | \ |
f127e61e | 463 | _fields \ |
d3de7f14 | 464 | return __event_len; \ |
114667d5 MD |
465 | \ |
466 | error: \ | |
467 | __attribute__((unused)); \ | |
468 | return -1; \ | |
d3de7f14 MD |
469 | } |
470 | ||
3bc29f0a | 471 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 472 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
114667d5 | 473 | static inline ssize_t __event_get_size__##_name(void *__tp_locvar) \ |
d3de7f14 MD |
474 | { \ |
475 | size_t __event_len = 0; \ | |
476 | unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \ | |
7ca580f8 | 477 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
0d1d4002 | 478 | \ |
f127e61e | 479 | _fields \ |
0d1d4002 | 480 | return __event_len; \ |
114667d5 MD |
481 | \ |
482 | error: \ | |
483 | __attribute__((unused)); \ | |
484 | return -1; \ | |
6db3d13b | 485 | } |
40652b65 MD |
486 | |
487 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
488 | ||
f127e61e | 489 | |
40652b65 | 490 | /* |
f127e61e | 491 | * Stage 4.1 of tracepoint event generation. |
e763dbf5 | 492 | * |
f127e61e MD |
493 | * Create static inline function that layout the filter stack data. |
494 | * We make both write and nowrite data available to the filter. | |
e763dbf5 MD |
495 | */ |
496 | ||
f127e61e | 497 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb MD |
498 | #include <lttng/events-reset.h> |
499 | #include <lttng/events-write.h> | |
500 | #include <lttng/events-nowrite.h> | |
f127e61e MD |
501 | |
502 | #undef _ctf_integer_ext_fetched | |
503 | #define _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
504 | if (lttng_is_signed_type(_type)) { \ | |
505 | int64_t __ctf_tmp_int64; \ | |
506 | switch (sizeof(_type)) { \ | |
507 | case 1: \ | |
508 | { \ | |
509 | union { _type t; int8_t v; } __tmp = { (_type) (_src) }; \ | |
510 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ | |
511 | break; \ | |
512 | } \ | |
513 | case 2: \ | |
514 | { \ | |
515 | union { _type t; int16_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
516 | if (_byte_order != __BYTE_ORDER) \ |
517 | __swab16s(&__tmp.v); \ | |
f127e61e MD |
518 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
519 | break; \ | |
520 | } \ | |
521 | case 4: \ | |
522 | { \ | |
523 | union { _type t; int32_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
524 | if (_byte_order != __BYTE_ORDER) \ |
525 | __swab32s(&__tmp.v); \ | |
f127e61e MD |
526 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
527 | break; \ | |
528 | } \ | |
529 | case 8: \ | |
530 | { \ | |
531 | union { _type t; int64_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
532 | if (_byte_order != __BYTE_ORDER) \ |
533 | __swab64s(&__tmp.v); \ | |
f127e61e MD |
534 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
535 | break; \ | |
536 | } \ | |
537 | default: \ | |
538 | BUG_ON(1); \ | |
539 | }; \ | |
540 | memcpy(__stack_data, &__ctf_tmp_int64, sizeof(int64_t)); \ | |
541 | } else { \ | |
542 | uint64_t __ctf_tmp_uint64; \ | |
543 | switch (sizeof(_type)) { \ | |
544 | case 1: \ | |
545 | { \ | |
546 | union { _type t; uint8_t v; } __tmp = { (_type) (_src) }; \ | |
547 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ | |
548 | break; \ | |
549 | } \ | |
550 | case 2: \ | |
551 | { \ | |
552 | union { _type t; uint16_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
553 | if (_byte_order != __BYTE_ORDER) \ |
554 | __swab16s(&__tmp.v); \ | |
f127e61e MD |
555 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
556 | break; \ | |
557 | } \ | |
558 | case 4: \ | |
559 | { \ | |
560 | union { _type t; uint32_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
561 | if (_byte_order != __BYTE_ORDER) \ |
562 | __swab32s(&__tmp.v); \ | |
f127e61e MD |
563 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
564 | break; \ | |
565 | } \ | |
566 | case 8: \ | |
567 | { \ | |
568 | union { _type t; uint64_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
569 | if (_byte_order != __BYTE_ORDER) \ |
570 | __swab64s(&__tmp.v); \ | |
f127e61e MD |
571 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
572 | break; \ | |
573 | } \ | |
574 | default: \ | |
575 | BUG_ON(1); \ | |
576 | }; \ | |
577 | memcpy(__stack_data, &__ctf_tmp_uint64, sizeof(uint64_t)); \ | |
578 | } \ | |
579 | __stack_data += sizeof(int64_t); | |
580 | ||
581 | #undef _ctf_integer_ext_isuser0 | |
582 | #define _ctf_integer_ext_isuser0(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
583 | _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) | |
584 | ||
585 | #undef _ctf_integer_ext_isuser1 | |
586 | #define _ctf_integer_ext_isuser1(_type, _item, _user_src, _byte_order, _base, _nowrite) \ | |
3c8ebbc8 MD |
587 | { \ |
588 | union { \ | |
589 | char __array[sizeof(_user_src)]; \ | |
590 | __typeof__(_user_src) __v; \ | |
591 | } __tmp_fetch; \ | |
592 | if (lib_ring_buffer_copy_from_user_check_nofault(__tmp_fetch.__array, \ | |
593 | &(_user_src), sizeof(_user_src))) \ | |
594 | memset(__tmp_fetch.__array, 0, sizeof(__tmp_fetch.__array)); \ | |
595 | _ctf_integer_ext_fetched(_type, _item, __tmp_fetch.__v, _byte_order, _base, _nowrite) \ | |
f127e61e | 596 | } |
e763dbf5 | 597 | |
f127e61e MD |
598 | #undef _ctf_integer_ext |
599 | #define _ctf_integer_ext(_type, _item, _user_src, _byte_order, _base, _user, _nowrite) \ | |
600 | _ctf_integer_ext_isuser##_user(_type, _item, _user_src, _byte_order, _base, _nowrite) | |
601 | ||
602 | #undef _ctf_array_encoded | |
3834b99f | 603 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
604 | { \ |
605 | unsigned long __ctf_tmp_ulong = (unsigned long) (_length); \ | |
606 | const void *__ctf_tmp_ptr = (_src); \ | |
607 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ | |
608 | __stack_data += sizeof(unsigned long); \ | |
6b272cda MD |
609 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
610 | __stack_data += sizeof(void *); \ | |
f127e61e MD |
611 | } |
612 | ||
43803cf2 MD |
613 | #undef _ctf_array_bitfield |
614 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
3834b99f | 615 | _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite) |
43803cf2 | 616 | |
f127e61e MD |
617 | #undef _ctf_sequence_encoded |
618 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 619 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
620 | { \ |
621 | unsigned long __ctf_tmp_ulong = (unsigned long) (_src_length); \ | |
622 | const void *__ctf_tmp_ptr = (_src); \ | |
623 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ | |
624 | __stack_data += sizeof(unsigned long); \ | |
6b272cda MD |
625 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
626 | __stack_data += sizeof(void *); \ | |
f127e61e MD |
627 | } |
628 | ||
43803cf2 MD |
629 | #undef _ctf_sequence_bitfield |
630 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
631 | _length_type, _src_length, \ | |
632 | _user, _nowrite) \ | |
633 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
634 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
635 | ||
f127e61e MD |
636 | #undef _ctf_string |
637 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
638 | { \ | |
1d84e8e7 MD |
639 | const void *__ctf_tmp_ptr = \ |
640 | ((_src) ? (_src) : __LTTNG_NULL_STRING); \ | |
6b272cda MD |
641 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
642 | __stack_data += sizeof(void *); \ | |
f127e61e | 643 | } |
c6e3f225 | 644 | |
141ddf28 MD |
645 | #undef _ctf_enum |
646 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
647 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
648 | ||
e763dbf5 | 649 | #undef TP_PROTO |
f127e61e | 650 | #define TP_PROTO(...) __VA_ARGS__ |
e763dbf5 | 651 | |
f127e61e MD |
652 | #undef TP_FIELDS |
653 | #define TP_FIELDS(...) __VA_ARGS__ | |
e763dbf5 | 654 | |
7ca580f8 MD |
655 | #undef TP_locvar |
656 | #define TP_locvar(...) __VA_ARGS__ | |
657 | ||
f127e61e | 658 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 659 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e | 660 | static inline \ |
99d223ad | 661 | void __event_prepare_interpreter_stack__##_name(char *__stack_data, \ |
f127e61e | 662 | void *__tp_locvar) \ |
e763dbf5 | 663 | { \ |
7ca580f8 MD |
664 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
665 | \ | |
f127e61e | 666 | _fields \ |
e763dbf5 MD |
667 | } |
668 | ||
f127e61e | 669 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 670 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e | 671 | static inline \ |
99d223ad | 672 | void __event_prepare_interpreter_stack__##_name(char *__stack_data, \ |
f127e61e | 673 | void *__tp_locvar, _proto) \ |
d3de7f14 | 674 | { \ |
7ca580f8 MD |
675 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
676 | \ | |
f127e61e | 677 | _fields \ |
d3de7f14 MD |
678 | } |
679 | ||
e763dbf5 MD |
680 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
681 | ||
e763dbf5 | 682 | /* |
f127e61e | 683 | * Stage 5 of the trace events. |
40652b65 | 684 | * |
f127e61e | 685 | * Create static inline function that calculates event payload alignment. |
3c4ffab9 MD |
686 | */ |
687 | ||
f127e61e | 688 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb MD |
689 | #include <lttng/events-reset.h> |
690 | #include <lttng/events-write.h> | |
3c4ffab9 | 691 | |
f127e61e MD |
692 | #undef _ctf_integer_ext |
693 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ | |
694 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
3c4ffab9 | 695 | |
f127e61e | 696 | #undef _ctf_array_encoded |
3834b99f | 697 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e | 698 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); |
3c4ffab9 | 699 | |
43803cf2 MD |
700 | #undef _ctf_array_bitfield |
701 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
3834b99f | 702 | _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite) |
43803cf2 | 703 | |
f127e61e MD |
704 | #undef _ctf_sequence_encoded |
705 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 706 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
707 | __event_align = max_t(size_t, __event_align, lttng_alignof(_length_type)); \ |
708 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
64c796d8 | 709 | |
43803cf2 MD |
710 | #undef _ctf_sequence_bitfield |
711 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
712 | _length_type, _src_length, \ | |
713 | _user, _nowrite) \ | |
714 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
715 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
716 | ||
f127e61e MD |
717 | #undef _ctf_string |
718 | #define _ctf_string(_item, _src, _user, _nowrite) | |
64c796d8 | 719 | |
141ddf28 MD |
720 | #undef _ctf_enum |
721 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
722 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
723 | ||
f64dd4be MD |
724 | #undef ctf_align |
725 | #define ctf_align(_type) \ | |
726 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
727 | ||
f127e61e MD |
728 | #undef TP_PROTO |
729 | #define TP_PROTO(...) __VA_ARGS__ | |
84da5206 | 730 | |
f127e61e MD |
731 | #undef TP_FIELDS |
732 | #define TP_FIELDS(...) __VA_ARGS__ | |
c6e3f225 | 733 | |
f127e61e MD |
734 | #undef TP_locvar |
735 | #define TP_locvar(...) __VA_ARGS__ | |
3c4ffab9 | 736 | |
f64dd4be MD |
737 | #undef ctf_custom_field |
738 | #define ctf_custom_field(_type, _item, _code) _code | |
739 | ||
740 | #undef ctf_custom_code | |
741 | #define ctf_custom_code(...) \ | |
742 | { \ | |
743 | __VA_ARGS__ \ | |
744 | } | |
745 | ||
f127e61e | 746 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 747 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
748 | static inline size_t __event_get_align__##_name(void *__tp_locvar, _proto) \ |
749 | { \ | |
750 | size_t __event_align = 1; \ | |
751 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ | |
752 | \ | |
753 | _fields \ | |
754 | return __event_align; \ | |
755 | } | |
3c4ffab9 | 756 | |
3bc29f0a | 757 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 758 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
759 | static inline size_t __event_get_align__##_name(void *__tp_locvar) \ |
760 | { \ | |
761 | size_t __event_align = 1; \ | |
762 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ | |
763 | \ | |
764 | _fields \ | |
765 | return __event_align; \ | |
766 | } | |
d3de7f14 | 767 | |
3c4ffab9 MD |
768 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
769 | ||
3c4ffab9 | 770 | /* |
f127e61e | 771 | * Stage 6 of tracepoint event generation. |
e763dbf5 | 772 | * |
f127e61e MD |
773 | * Create the probe function. This function calls event size calculation |
774 | * and writes event data into the buffer. | |
40652b65 MD |
775 | */ |
776 | ||
f127e61e | 777 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb MD |
778 | #include <lttng/events-reset.h> |
779 | #include <lttng/events-write.h> | |
c6e3f225 | 780 | |
f127e61e MD |
781 | #undef _ctf_integer_ext_fetched |
782 | #define _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
e763dbf5 | 783 | { \ |
f127e61e MD |
784 | _type __tmp = _src; \ |
785 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\ | |
aaa4004a | 786 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ |
f127e61e MD |
787 | } |
788 | ||
789 | #undef _ctf_integer_ext_isuser0 | |
790 | #define _ctf_integer_ext_isuser0(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
791 | _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) | |
792 | ||
793 | #undef _ctf_integer_ext_isuser1 | |
794 | #define _ctf_integer_ext_isuser1(_type, _item, _user_src, _byte_order, _base, _nowrite) \ | |
795 | { \ | |
3c8ebbc8 MD |
796 | union { \ |
797 | char __array[sizeof(_user_src)]; \ | |
798 | __typeof__(_user_src) __v; \ | |
799 | } __tmp_fetch; \ | |
800 | if (lib_ring_buffer_copy_from_user_check_nofault(__tmp_fetch.__array, \ | |
801 | &(_user_src), sizeof(_user_src))) \ | |
802 | memset(__tmp_fetch.__array, 0, sizeof(__tmp_fetch.__array)); \ | |
803 | _ctf_integer_ext_fetched(_type, _item, __tmp_fetch.__v, _byte_order, _base, _nowrite) \ | |
f127e61e MD |
804 | } |
805 | ||
806 | #undef _ctf_integer_ext | |
807 | #define _ctf_integer_ext(_type, _item, _user_src, _byte_order, _base, _user, _nowrite) \ | |
808 | _ctf_integer_ext_isuser##_user(_type, _item, _user_src, _byte_order, _base, _nowrite) | |
809 | ||
810 | #undef _ctf_array_encoded | |
3834b99f | 811 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
812 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ |
813 | if (_user) { \ | |
814 | __chan->ops->event_write_from_user(&__ctx, _src, sizeof(_type) * (_length)); \ | |
815 | } else { \ | |
816 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); \ | |
817 | } | |
818 | ||
43803cf2 MD |
819 | #if (__BYTE_ORDER == __LITTLE_ENDIAN) |
820 | #undef _ctf_array_bitfield | |
821 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
822 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
823 | if (_user) { \ | |
824 | __chan->ops->event_write_from_user(&__ctx, _src, sizeof(_type) * (_length)); \ | |
825 | } else { \ | |
826 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); \ | |
827 | } | |
828 | #else /* #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
829 | /* | |
830 | * For big endian, we need to byteswap into little endian. | |
831 | */ | |
832 | #undef _ctf_array_bitfield | |
833 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
834 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
835 | { \ | |
836 | size_t _i; \ | |
837 | \ | |
838 | for (_i = 0; _i < (_length); _i++) { \ | |
839 | _type _tmp; \ | |
840 | \ | |
841 | if (_user) { \ | |
842 | if (get_user(_tmp, (_type *) _src + _i)) \ | |
843 | _tmp = 0; \ | |
844 | } else { \ | |
845 | _tmp = ((_type *) _src)[_i]; \ | |
846 | } \ | |
847 | switch (sizeof(_type)) { \ | |
848 | case 1: \ | |
849 | break; \ | |
850 | case 2: \ | |
851 | _tmp = cpu_to_le16(_tmp); \ | |
852 | break; \ | |
853 | case 4: \ | |
854 | _tmp = cpu_to_le32(_tmp); \ | |
855 | break; \ | |
856 | case 8: \ | |
857 | _tmp = cpu_to_le64(_tmp); \ | |
858 | break; \ | |
859 | default: \ | |
860 | BUG_ON(1); \ | |
861 | } \ | |
862 | __chan->ops->event_write(&__ctx, &_tmp, sizeof(_type)); \ | |
863 | } \ | |
864 | } | |
865 | #endif /* #else #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
866 | ||
f127e61e MD |
867 | #undef _ctf_sequence_encoded |
868 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 869 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
84da5206 | 870 | { \ |
114667d5 | 871 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx]; \ |
f127e61e MD |
872 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
873 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
84da5206 | 874 | } \ |
f127e61e MD |
875 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ |
876 | if (_user) { \ | |
877 | __chan->ops->event_write_from_user(&__ctx, _src, \ | |
878 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
879 | } else { \ | |
880 | __chan->ops->event_write(&__ctx, _src, \ | |
881 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
882 | } | |
883 | ||
43803cf2 MD |
884 | #if (__BYTE_ORDER == __LITTLE_ENDIAN) |
885 | #undef _ctf_sequence_bitfield | |
886 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
887 | _length_type, _src_length, \ | |
888 | _user, _nowrite) \ | |
889 | { \ | |
114667d5 | 890 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx] * sizeof(_type) * CHAR_BIT; \ |
43803cf2 MD |
891 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
892 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
893 | } \ | |
894 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
895 | if (_user) { \ | |
896 | __chan->ops->event_write_from_user(&__ctx, _src, \ | |
897 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
898 | } else { \ | |
899 | __chan->ops->event_write(&__ctx, _src, \ | |
900 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
901 | } | |
902 | #else /* #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
903 | /* | |
904 | * For big endian, we need to byteswap into little endian. | |
905 | */ | |
906 | #undef _ctf_sequence_bitfield | |
907 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
908 | _length_type, _src_length, \ | |
909 | _user, _nowrite) \ | |
910 | { \ | |
114667d5 | 911 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx] * sizeof(_type) * CHAR_BIT; \ |
43803cf2 MD |
912 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
913 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
914 | } \ | |
915 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
916 | { \ | |
917 | size_t _i, _length; \ | |
918 | \ | |
919 | _length = __get_dynamic_len(dest); \ | |
920 | for (_i = 0; _i < _length; _i++) { \ | |
921 | _type _tmp; \ | |
922 | \ | |
923 | if (_user) { \ | |
924 | if (get_user(_tmp, (_type *) _src + _i)) \ | |
925 | _tmp = 0; \ | |
926 | } else { \ | |
927 | _tmp = ((_type *) _src)[_i]; \ | |
928 | } \ | |
929 | switch (sizeof(_type)) { \ | |
930 | case 1: \ | |
931 | break; \ | |
932 | case 2: \ | |
933 | _tmp = cpu_to_le16(_tmp); \ | |
934 | break; \ | |
935 | case 4: \ | |
936 | _tmp = cpu_to_le32(_tmp); \ | |
937 | break; \ | |
938 | case 8: \ | |
939 | _tmp = cpu_to_le64(_tmp); \ | |
940 | break; \ | |
941 | default: \ | |
942 | BUG_ON(1); \ | |
943 | } \ | |
944 | __chan->ops->event_write(&__ctx, &_tmp, sizeof(_type)); \ | |
945 | } \ | |
946 | } | |
947 | #endif /* #else #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
948 | ||
f127e61e MD |
949 | #undef _ctf_string |
950 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
f127e61e | 951 | if (_user) { \ |
1d84e8e7 | 952 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(*(_src))); \ |
f127e61e MD |
953 | __chan->ops->event_strcpy_from_user(&__ctx, _src, \ |
954 | __get_dynamic_len(dest)); \ | |
955 | } else { \ | |
1d84e8e7 MD |
956 | const char *__ctf_tmp_string = \ |
957 | ((_src) ? (_src) : __LTTNG_NULL_STRING); \ | |
958 | lib_ring_buffer_align_ctx(&__ctx, \ | |
959 | lttng_alignof(*__ctf_tmp_string)); \ | |
960 | __chan->ops->event_strcpy(&__ctx, __ctf_tmp_string, \ | |
f127e61e MD |
961 | __get_dynamic_len(dest)); \ |
962 | } | |
e763dbf5 | 963 | |
141ddf28 MD |
964 | #undef _ctf_enum |
965 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
966 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
f64dd4be MD |
967 | |
968 | #undef ctf_align | |
969 | #define ctf_align(_type) \ | |
970 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); | |
971 | ||
972 | #undef ctf_custom_field | |
973 | #define ctf_custom_field(_type, _item, _code) _code | |
974 | ||
975 | #undef ctf_custom_code | |
976 | #define ctf_custom_code(...) \ | |
977 | { \ | |
978 | __VA_ARGS__ \ | |
979 | } | |
980 | ||
e763dbf5 | 981 | /* Beware: this get len actually consumes the len value */ |
f127e61e | 982 | #undef __get_dynamic_len |
114667d5 | 983 | #define __get_dynamic_len(field) this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx++] |
e763dbf5 MD |
984 | |
985 | #undef TP_PROTO | |
f127e61e | 986 | #define TP_PROTO(...) __VA_ARGS__ |
e763dbf5 MD |
987 | |
988 | #undef TP_ARGS | |
f127e61e | 989 | #define TP_ARGS(...) __VA_ARGS__ |
e763dbf5 | 990 | |
f127e61e MD |
991 | #undef TP_FIELDS |
992 | #define TP_FIELDS(...) __VA_ARGS__ | |
e763dbf5 | 993 | |
7ca580f8 MD |
994 | #undef TP_locvar |
995 | #define TP_locvar(...) __VA_ARGS__ | |
996 | ||
265822ae MD |
997 | #undef TP_code_pre |
998 | #define TP_code_pre(...) __VA_ARGS__ | |
999 | ||
1000 | #undef TP_code_post | |
1001 | #define TP_code_post(...) __VA_ARGS__ | |
7ca580f8 | 1002 | |
c337ddc2 MD |
1003 | /* |
1004 | * For state dump, check that "session" argument (mandatory) matches the | |
1005 | * session this event belongs to. Ensures that we write state dump data only | |
1006 | * into the started session, not into all sessions. | |
1007 | */ | |
1008 | #ifdef TP_SESSION_CHECK | |
1009 | #define _TP_SESSION_CHECK(session, csession) (session == csession) | |
1010 | #else /* TP_SESSION_CHECK */ | |
1011 | #define _TP_SESSION_CHECK(session, csession) 1 | |
1012 | #endif /* TP_SESSION_CHECK */ | |
1013 | ||
f9771d39 | 1014 | /* |
f127e61e MD |
1015 | * Using twice size for filter stack data to hold size and pointer for |
1016 | * each field (worse case). For integers, max size required is 64-bit. | |
1017 | * Same for double-precision floats. Those fit within | |
1018 | * 2*sizeof(unsigned long) for all supported architectures. | |
1019 | * Perform UNION (||) of filter runtime list. | |
f9771d39 | 1020 | */ |
e2d5dbc7 MD |
1021 | #undef _LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
1022 | #define _LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _data_proto, _locvar_args, _locvar, _code_pre, _fields, _code_post) \ | |
1023 | static void __event_probe__##_name(_data_proto) \ | |
1024 | { \ | |
1025 | struct probe_local_vars { _locvar }; \ | |
1026 | struct lttng_kernel_event_common *__event = __data; \ | |
346cb5ee | 1027 | struct lttng_kernel_probe_ctx __lttng_probe_ctx = { \ |
e2d5dbc7 MD |
1028 | .event = __event, \ |
1029 | .interruptible = !irqs_disabled(), \ | |
1030 | }; \ | |
1031 | union { \ | |
1032 | size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)]; \ | |
1033 | char __interpreter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \ | |
1034 | } __stackvar; \ | |
1035 | size_t __orig_dynamic_len_offset, __dynamic_len_idx __attribute__((unused)); \ | |
1036 | struct probe_local_vars __tp_locvar; \ | |
1037 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
1038 | &__tp_locvar; \ | |
1039 | bool __interpreter_stack_prepared = false; \ | |
1040 | \ | |
1041 | switch (__event->type) { \ | |
1042 | case LTTNG_KERNEL_EVENT_TYPE_RECORDER: \ | |
1043 | { \ | |
1044 | struct lttng_kernel_event_recorder *__event_recorder = \ | |
1045 | container_of(__event, struct lttng_kernel_event_recorder, parent); \ | |
1046 | struct lttng_channel *__chan = __event_recorder->chan; \ | |
a2fa977a MD |
1047 | struct lttng_kernel_session *__session = __chan->session; \ |
1048 | struct lttng_kernel_id_tracker_rcu *__lf; \ | |
e2d5dbc7 MD |
1049 | \ |
1050 | if (!_TP_SESSION_CHECK(session, __session)) \ | |
1051 | return; \ | |
1052 | if (unlikely(!LTTNG_READ_ONCE(__session->active))) \ | |
1053 | return; \ | |
1054 | if (unlikely(!LTTNG_READ_ONCE(__chan->enabled))) \ | |
1055 | return; \ | |
1056 | __lf = lttng_rcu_dereference(__session->pid_tracker.p); \ | |
1057 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, current->tgid))) \ | |
1058 | return; \ | |
1059 | __lf = lttng_rcu_dereference(__session->vpid_tracker.p); \ | |
1060 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, task_tgid_vnr(current)))) \ | |
1061 | return; \ | |
1062 | __lf = lttng_rcu_dereference(__session->uid_tracker.p); \ | |
1063 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
1064 | lttng_current_uid()))) \ | |
1065 | return; \ | |
1066 | __lf = lttng_rcu_dereference(__session->vuid_tracker.p); \ | |
1067 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
1068 | lttng_current_vuid()))) \ | |
1069 | return; \ | |
1070 | __lf = lttng_rcu_dereference(__session->gid_tracker.p); \ | |
1071 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
1072 | lttng_current_gid()))) \ | |
1073 | return; \ | |
1074 | __lf = lttng_rcu_dereference(__session->vgid_tracker.p); \ | |
1075 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
1076 | lttng_current_vgid()))) \ | |
1077 | return; \ | |
1078 | break; \ | |
1079 | } \ | |
1080 | case LTTNG_KERNEL_EVENT_TYPE_NOTIFIER: \ | |
1081 | break; \ | |
1082 | default: \ | |
1083 | WARN_ON_ONCE(1); \ | |
1084 | } \ | |
1085 | if (unlikely(!READ_ONCE(__event->enabled))) \ | |
1086 | return; \ | |
1087 | __orig_dynamic_len_offset = this_cpu_ptr(<tng_dynamic_len_stack)->offset; \ | |
1088 | __dynamic_len_idx = __orig_dynamic_len_offset; \ | |
1089 | _code_pre \ | |
1090 | if (unlikely(READ_ONCE(__event->eval_filter))) { \ | |
e2d5dbc7 MD |
1091 | __event_prepare_interpreter_stack__##_name(__stackvar.__interpreter_stack_data, \ |
1092 | _locvar_args); \ | |
1093 | __interpreter_stack_prepared = true; \ | |
8a445457 MD |
1094 | if (likely(__event->run_filter(__event, \ |
1095 | __stackvar.__interpreter_stack_data, &__lttng_probe_ctx, NULL) != LTTNG_KERNEL_EVENT_FILTER_ACCEPT)) \ | |
e2d5dbc7 MD |
1096 | goto __post; \ |
1097 | } \ | |
1098 | switch (__event->type) { \ | |
1099 | case LTTNG_KERNEL_EVENT_TYPE_RECORDER: \ | |
1100 | { \ | |
1101 | struct lttng_kernel_event_recorder *__event_recorder = \ | |
1102 | container_of(__event, struct lttng_kernel_event_recorder, parent); \ | |
1103 | struct lttng_channel *__chan = __event_recorder->chan; \ | |
e27e4381 | 1104 | struct lttng_kernel_ring_buffer_ctx __ctx; \ |
e2d5dbc7 MD |
1105 | ssize_t __event_len; \ |
1106 | size_t __event_align; \ | |
1107 | int __ret; \ | |
1108 | \ | |
1109 | __event_len = __event_get_size__##_name(_locvar_args); \ | |
1110 | if (unlikely(__event_len < 0)) { \ | |
1111 | lib_ring_buffer_lost_event_too_big(__chan->chan); \ | |
1112 | goto __post; \ | |
1113 | } \ | |
1114 | __event_align = __event_get_align__##_name(_locvar_args); \ | |
c7d9db61 MD |
1115 | lib_ring_buffer_ctx_init(&__ctx, __event_recorder, __event_len, \ |
1116 | __event_align, &__lttng_probe_ctx); \ | |
cefd899f | 1117 | __ret = __chan->ops->event_reserve(&__ctx); \ |
e2d5dbc7 MD |
1118 | if (__ret < 0) \ |
1119 | goto __post; \ | |
1120 | _fields \ | |
1121 | __chan->ops->event_commit(&__ctx); \ | |
1122 | break; \ | |
1123 | } \ | |
1124 | case LTTNG_KERNEL_EVENT_TYPE_NOTIFIER: \ | |
1125 | { \ | |
1126 | struct lttng_kernel_event_notifier *__event_notifier = \ | |
1127 | container_of(__event, struct lttng_kernel_event_notifier, parent); \ | |
1128 | struct lttng_kernel_notification_ctx __notif_ctx; \ | |
1129 | \ | |
1130 | __notif_ctx.eval_capture = LTTNG_READ_ONCE(__event_notifier->eval_capture); \ | |
1131 | if (unlikely(!__interpreter_stack_prepared && __notif_ctx.eval_capture)) \ | |
1132 | __event_prepare_interpreter_stack__##_name( \ | |
1133 | __stackvar.__interpreter_stack_data, \ | |
1134 | _locvar_args); \ | |
1135 | \ | |
1136 | __event_notifier->notification_send(__event_notifier, \ | |
e2d5dbc7 | 1137 | __stackvar.__interpreter_stack_data, \ |
a775608d | 1138 | &__lttng_probe_ctx, \ |
e2d5dbc7 MD |
1139 | &__notif_ctx); \ |
1140 | break; \ | |
1141 | } \ | |
1142 | default: \ | |
1143 | WARN_ON_ONCE(1); \ | |
1144 | } \ | |
1145 | __post: \ | |
1146 | _code_post \ | |
1147 | barrier(); /* use before un-reserve. */ \ | |
1148 | this_cpu_ptr(<tng_dynamic_len_stack)->offset = __orig_dynamic_len_offset; \ | |
1149 | return; \ | |
1150 | } | |
1151 | ||
3bc29f0a | 1152 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 1153 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
e2d5dbc7 MD |
1154 | _LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, PARAMS(void *__data, _proto), PARAMS(tp_locvar, _args), \ |
1155 | PARAMS(_locvar), PARAMS(_code_pre), PARAMS(_fields), PARAMS(_code_post)) | |
e763dbf5 | 1156 | |
3bc29f0a | 1157 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 1158 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
e2d5dbc7 MD |
1159 | _LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, PARAMS(void *__data), PARAMS(tp_locvar), PARAMS(_locvar), \ |
1160 | PARAMS(_code_pre), PARAMS(_fields), PARAMS(_code_post)) | |
f7bdf4db | 1161 | |
e763dbf5 MD |
1162 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
1163 | ||
f127e61e MD |
1164 | #undef __get_dynamic_len |
1165 | ||
1166 | /* | |
325e5da6 MD |
1167 | * Stage 7.0 of tracepoint event generation. |
1168 | * | |
1169 | * Declare toplevel descriptor for the whole probe. | |
1170 | */ | |
1171 | ||
1172 | #define TP_ID1(_token, _system) _token##_system | |
1173 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1174 | ||
1175 | static __used struct lttng_kernel_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM); | |
1176 | ||
1177 | #undef TP_ID1 | |
1178 | #undef TP_ID | |
1179 | ||
1180 | /* | |
1181 | * Stage 7.1 of the trace events. | |
f127e61e MD |
1182 | * |
1183 | * Create event descriptions. | |
1184 | */ | |
1185 | ||
1186 | /* Named field types must be defined in lttng-types.h */ | |
1187 | ||
3b4aafcb | 1188 | #include <lttng/events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
f127e61e MD |
1189 | |
1190 | #ifndef TP_PROBE_CB | |
1191 | #define TP_PROBE_CB(_template) &__event_probe__##_template | |
1192 | #endif | |
1193 | ||
1194 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
1195 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
437d5aa5 MD |
1196 | static const struct lttng_kernel_event_desc __event_desc___##_map = { \ |
1197 | .event_name = #_map, \ | |
1198 | .event_kname = #_name, \ | |
325e5da6 | 1199 | .probe_desc = &TP_ID(__probe_desc___, TRACE_SYSTEM), \ |
e2d5dbc7 | 1200 | .probe_callback = (void (*)(void)) TP_PROBE_CB(_template), \ |
f127e61e | 1201 | .fields = __event_fields___##_template, \ |
f127e61e MD |
1202 | .nr_fields = ARRAY_SIZE(__event_fields___##_template), \ |
1203 | .owner = THIS_MODULE, \ | |
1204 | }; | |
1205 | ||
1206 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
1207 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
1208 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) | |
1209 | ||
325e5da6 MD |
1210 | #define TP_ID1(_token, _system) _token##_system |
1211 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1212 | ||
f127e61e MD |
1213 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
1214 | ||
325e5da6 MD |
1215 | #undef TP_ID1 |
1216 | #undef TP_ID | |
1217 | ||
f127e61e MD |
1218 | /* |
1219 | * Stage 8 of the trace events. | |
1220 | * | |
1221 | * Create an array of event description pointers. | |
1222 | */ | |
1223 | ||
3b4aafcb | 1224 | #include <lttng/events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
f127e61e MD |
1225 | |
1226 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
1227 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
1228 | &__event_desc___##_map, | |
1229 | ||
1230 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
1231 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
1232 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) | |
1233 | ||
1234 | #define TP_ID1(_token, _system) _token##_system | |
1235 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1236 | ||
437d5aa5 | 1237 | static const struct lttng_kernel_event_desc *TP_ID(__event_desc___, TRACE_SYSTEM)[] = { |
f127e61e MD |
1238 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
1239 | }; | |
1240 | ||
1241 | #undef TP_ID1 | |
1242 | #undef TP_ID | |
1243 | ||
1244 | /* | |
1245 | * Stage 9 of the trace events. | |
1246 | * | |
1247 | * Create a toplevel descriptor for the whole probe. | |
1248 | */ | |
1249 | ||
1250 | #define TP_ID1(_token, _system) _token##_system | |
1251 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1252 | ||
1253 | /* non-const because list head will be modified when registered. */ | |
437d5aa5 MD |
1254 | static __used struct lttng_kernel_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = { |
1255 | .provider_name = __stringify(TRACE_SYSTEM), | |
f127e61e MD |
1256 | .event_desc = TP_ID(__event_desc___, TRACE_SYSTEM), |
1257 | .nr_events = ARRAY_SIZE(TP_ID(__event_desc___, TRACE_SYSTEM)), | |
1258 | .head = { NULL, NULL }, | |
1259 | .lazy_init_head = { NULL, NULL }, | |
1260 | .lazy = 0, | |
1261 | }; | |
1262 | ||
1263 | #undef TP_ID1 | |
1264 | #undef TP_ID | |
1265 | ||
3afe7aac | 1266 | /* |
c099397a | 1267 | * Stage 10 of the trace events. |
3afe7aac MD |
1268 | * |
1269 | * Register/unregister probes at module load/unload. | |
1270 | */ | |
1271 | ||
3b4aafcb | 1272 | #include <lttng/events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
3afe7aac MD |
1273 | |
1274 | #define TP_ID1(_token, _system) _token##_system | |
1275 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1276 | #define module_init_eval1(_token, _system) module_init(_token##_system) | |
1277 | #define module_init_eval(_token, _system) module_init_eval1(_token, _system) | |
1278 | #define module_exit_eval1(_token, _system) module_exit(_token##_system) | |
1279 | #define module_exit_eval(_token, _system) module_exit_eval1(_token, _system) | |
1280 | ||
2655f9ad | 1281 | #ifndef TP_MODULE_NOINIT |
3afe7aac MD |
1282 | static int TP_ID(__lttng_events_init__, TRACE_SYSTEM)(void) |
1283 | { | |
263b6c88 | 1284 | wrapper_vmalloc_sync_mappings(); |
c93ed3b0 | 1285 | return lttng_kernel_probe_register(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
1286 | } |
1287 | ||
3afe7aac MD |
1288 | static void TP_ID(__lttng_events_exit__, TRACE_SYSTEM)(void) |
1289 | { | |
c93ed3b0 | 1290 | lttng_kernel_probe_unregister(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
1291 | } |
1292 | ||
2655f9ad MD |
1293 | #ifndef TP_MODULE_NOAUTOLOAD |
1294 | module_init_eval(__lttng_events_init__, TRACE_SYSTEM); | |
3afe7aac | 1295 | module_exit_eval(__lttng_events_exit__, TRACE_SYSTEM); |
259b6cb3 | 1296 | #endif |
3afe7aac | 1297 | |
2655f9ad MD |
1298 | #endif |
1299 | ||
3afe7aac MD |
1300 | #undef module_init_eval |
1301 | #undef module_exit_eval | |
1302 | #undef TP_ID1 | |
1303 | #undef TP_ID | |
177b3692 MD |
1304 | |
1305 | #undef TP_PROTO | |
1306 | #undef TP_ARGS |