Commit | Line | Data |
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b7cdc182 | 1 | /* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only) |
9f36eaed | 2 | * |
3b4aafcb | 3 | * lttng/tracepoint-event-impl.h |
17baffe2 MD |
4 | * |
5 | * Copyright (C) 2009 Steven Rostedt <rostedt@goodmis.org> | |
f127e61e | 6 | * Copyright (C) 2009-2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
17baffe2 | 7 | */ |
f127e61e | 8 | |
d28686c1 | 9 | #include <linux/uaccess.h> |
d0dd2ecb | 10 | #include <linux/debugfs.h> |
f127e61e | 11 | #include <linux/rculist.h> |
43803cf2 | 12 | #include <asm/byteorder.h> |
bf1a9179 | 13 | #include <linux/swab.h> |
8d43abb7 | 14 | |
263b6c88 | 15 | #include <wrapper/vmalloc.h> /* for wrapper_vmalloc_sync_mappings() */ |
24591303 MD |
16 | #include <ringbuffer/frontend_types.h> |
17 | #include <ringbuffer/backend.h> | |
8d43abb7 | 18 | #include <wrapper/rcu.h> |
608416e1 | 19 | #include <wrapper/user_namespace.h> |
2df37e95 MD |
20 | #include <lttng/types.h> |
21 | #include <lttng/probe-user.h> | |
22 | #include <lttng/events.h> | |
a67ba386 | 23 | #include <lttng/events-internal.h> /* TODO: remove this include after refactoring is done. */ |
2df37e95 MD |
24 | #include <lttng/tracer-core.h> |
25 | #include <lttng/tp-mempool.h> | |
40652b65 | 26 | |
1d84e8e7 MD |
27 | #define __LTTNG_NULL_STRING "(null)" |
28 | ||
3b4aafcb MD |
29 | #undef PARAMS |
30 | #define PARAMS(args...) args | |
31 | ||
40652b65 | 32 | /* |
6db3d13b | 33 | * Macro declarations used for all stages. |
40652b65 MD |
34 | */ |
35 | ||
76e4f017 MD |
36 | /* |
37 | * LTTng name mapping macros. LTTng remaps some of the kernel events to | |
38 | * enforce name-spacing. | |
39 | */ | |
3bc29f0a | 40 | #undef LTTNG_TRACEPOINT_EVENT_MAP |
f127e61e | 41 | #define LTTNG_TRACEPOINT_EVENT_MAP(name, map, proto, args, fields) \ |
3bc29f0a | 42 | LTTNG_TRACEPOINT_EVENT_CLASS(map, \ |
76e4f017 MD |
43 | PARAMS(proto), \ |
44 | PARAMS(args), \ | |
f127e61e | 45 | PARAMS(fields)) \ |
3bc29f0a | 46 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(map, name, map, PARAMS(proto), PARAMS(args)) |
76e4f017 | 47 | |
3bc29f0a | 48 | #undef LTTNG_TRACEPOINT_EVENT_MAP_NOARGS |
f127e61e | 49 | #define LTTNG_TRACEPOINT_EVENT_MAP_NOARGS(name, map, fields) \ |
3bc29f0a | 50 | LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(map, \ |
f127e61e | 51 | PARAMS(fields)) \ |
3bc29f0a | 52 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(map, name, map) |
76e4f017 | 53 | |
f127e61e | 54 | #undef LTTNG_TRACEPOINT_EVENT_CODE_MAP |
265822ae | 55 | #define LTTNG_TRACEPOINT_EVENT_CODE_MAP(name, map, proto, args, _locvar, _code_pre, fields, _code_post) \ |
f127e61e MD |
56 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE(map, \ |
57 | PARAMS(proto), \ | |
58 | PARAMS(args), \ | |
59 | PARAMS(_locvar), \ | |
265822ae MD |
60 | PARAMS(_code_pre), \ |
61 | PARAMS(fields), \ | |
62 | PARAMS(_code_post)) \ | |
f127e61e MD |
63 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(map, name, map, PARAMS(proto), PARAMS(args)) |
64 | ||
3bc29f0a | 65 | #undef LTTNG_TRACEPOINT_EVENT_CODE |
265822ae | 66 | #define LTTNG_TRACEPOINT_EVENT_CODE(name, proto, args, _locvar, _code_pre, fields, _code_post) \ |
f127e61e | 67 | LTTNG_TRACEPOINT_EVENT_CODE_MAP(name, name, \ |
7ca580f8 MD |
68 | PARAMS(proto), \ |
69 | PARAMS(args), \ | |
70 | PARAMS(_locvar), \ | |
265822ae MD |
71 | PARAMS(_code_pre), \ |
72 | PARAMS(fields), \ | |
73 | PARAMS(_code_post)) | |
fcf7fa33 | 74 | |
40652b65 | 75 | /* |
3bc29f0a MD |
76 | * LTTNG_TRACEPOINT_EVENT_CLASS can be used to add a generic function |
77 | * handlers for events. That is, if all events have the same parameters | |
78 | * and just have distinct trace points. Each tracepoint can be defined | |
79 | * with LTTNG_TRACEPOINT_EVENT_INSTANCE and that will map the | |
80 | * LTTNG_TRACEPOINT_EVENT_CLASS to the tracepoint. | |
40652b65 | 81 | * |
3bc29f0a MD |
82 | * LTTNG_TRACEPOINT_EVENT is a one to one mapping between tracepoint and |
83 | * template. | |
40652b65 | 84 | */ |
6db3d13b | 85 | |
3bc29f0a | 86 | #undef LTTNG_TRACEPOINT_EVENT |
f127e61e | 87 | #define LTTNG_TRACEPOINT_EVENT(name, proto, args, fields) \ |
3bc29f0a MD |
88 | LTTNG_TRACEPOINT_EVENT_MAP(name, name, \ |
89 | PARAMS(proto), \ | |
90 | PARAMS(args), \ | |
f127e61e | 91 | PARAMS(fields)) |
40652b65 | 92 | |
3bc29f0a | 93 | #undef LTTNG_TRACEPOINT_EVENT_NOARGS |
f127e61e MD |
94 | #define LTTNG_TRACEPOINT_EVENT_NOARGS(name, fields) \ |
95 | LTTNG_TRACEPOINT_EVENT_MAP_NOARGS(name, name, PARAMS(fields)) | |
76e4f017 | 96 | |
3bc29f0a MD |
97 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE |
98 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE(template, name, proto, args) \ | |
99 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(template, name, name, PARAMS(proto), PARAMS(args)) | |
76e4f017 | 100 | |
3bc29f0a MD |
101 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS |
102 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(template, name) \ | |
103 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(template, name, name) | |
76e4f017 | 104 | |
3bc29f0a | 105 | #undef LTTNG_TRACEPOINT_EVENT_CLASS |
f127e61e | 106 | #define LTTNG_TRACEPOINT_EVENT_CLASS(_name, _proto, _args, _fields) \ |
3bc29f0a | 107 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, PARAMS(_proto), PARAMS(_args), , , \ |
265822ae | 108 | PARAMS(_fields), ) |
7ca580f8 | 109 | |
3bc29f0a | 110 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS |
f127e61e | 111 | #define LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(_name, _fields) \ |
265822ae | 112 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, , , PARAMS(_fields), ) |
7ca580f8 MD |
113 | |
114 | ||
f62b389e | 115 | /* |
c099397a | 116 | * Stage 1 of the trace events. |
f62b389e MD |
117 | * |
118 | * Create dummy trace calls for each events, verifying that the LTTng module | |
3bc29f0a MD |
119 | * instrumentation headers match the kernel arguments. Will be optimized |
120 | * out by the compiler. | |
f62b389e MD |
121 | */ |
122 | ||
f127e61e | 123 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb | 124 | #include <lttng/events-reset.h> |
f62b389e MD |
125 | |
126 | #undef TP_PROTO | |
f127e61e | 127 | #define TP_PROTO(...) __VA_ARGS__ |
f62b389e MD |
128 | |
129 | #undef TP_ARGS | |
f127e61e | 130 | #define TP_ARGS(...) __VA_ARGS__ |
f62b389e | 131 | |
3bc29f0a MD |
132 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP |
133 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
7eb827f2 | 134 | void trace_##_name(_proto); |
f62b389e | 135 | |
3bc29f0a MD |
136 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS |
137 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
cb1aa0c7 | 138 | void trace_##_name(void); |
f7bdf4db | 139 | |
f62b389e MD |
140 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
141 | ||
d0558de2 MD |
142 | /* |
143 | * Stage 1.1 of the trace events. | |
144 | * | |
145 | * Create dummy trace prototypes for each event class, and for each used | |
146 | * template. This will allow checking whether the prototypes from the | |
147 | * class and the instance using the class actually match. | |
148 | */ | |
149 | ||
3b4aafcb | 150 | #include <lttng/events-reset.h> /* Reset all macros within TRACE_EVENT */ |
d0558de2 MD |
151 | |
152 | #undef TP_PROTO | |
153 | #define TP_PROTO(...) __VA_ARGS__ | |
154 | ||
155 | #undef TP_ARGS | |
156 | #define TP_ARGS(...) __VA_ARGS__ | |
157 | ||
158 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
159 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
160 | void __event_template_proto___##_template(_proto); | |
161 | ||
162 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
163 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
164 | void __event_template_proto___##_template(void); | |
165 | ||
166 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE | |
265822ae | 167 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
d0558de2 MD |
168 | void __event_template_proto___##_name(_proto); |
169 | ||
170 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS | |
265822ae | 171 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
d0558de2 MD |
172 | void __event_template_proto___##_name(void); |
173 | ||
174 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
175 | ||
141ddf28 MD |
176 | /* |
177 | * Stage 1.2 of tracepoint event generation | |
178 | * | |
179 | * Unfolding the enums | |
180 | */ | |
3b4aafcb | 181 | #include <lttng/events-reset.h> /* Reset all macros within TRACE_EVENT */ |
141ddf28 MD |
182 | |
183 | /* Enumeration entry (single value) */ | |
184 | #undef ctf_enum_value | |
185 | #define ctf_enum_value(_string, _value) \ | |
437d5aa5 | 186 | lttng_kernel_static_enum_entry_value(_string, _value) |
141ddf28 MD |
187 | |
188 | /* Enumeration entry (range) */ | |
189 | #undef ctf_enum_range | |
190 | #define ctf_enum_range(_string, _range_start, _range_end) \ | |
437d5aa5 | 191 | lttng_kernel_static_enum_entry_range(_string, _range_start, _range_end) |
141ddf28 | 192 | |
08ad1061 PP |
193 | /* Enumeration entry (automatic value; follows the rules of CTF) */ |
194 | #undef ctf_enum_auto | |
437d5aa5 MD |
195 | #define ctf_enum_auto(_string) \ |
196 | lttng_kernel_static_enum_entry_auto(_string) | |
08ad1061 | 197 | |
141ddf28 MD |
198 | #undef TP_ENUM_VALUES |
199 | #define TP_ENUM_VALUES(...) \ | |
200 | __VA_ARGS__ | |
201 | ||
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 | }; | |
207 | ||
208 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
209 | ||
6db3d13b | 210 | /* |
c099397a | 211 | * Stage 2 of the trace events. |
6db3d13b MD |
212 | * |
213 | * Create event field type metadata section. | |
214 | * Each event produce an array of fields. | |
215 | */ | |
216 | ||
f127e61e | 217 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb MD |
218 | #include <lttng/events-reset.h> |
219 | #include <lttng/events-write.h> | |
220 | #include <lttng/events-nowrite.h> | |
6db3d13b | 221 | |
f127e61e | 222 | #undef _ctf_integer_ext |
437d5aa5 MD |
223 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ |
224 | lttng_kernel_static_event_field(#_item, \ | |
225 | lttng_kernel_static_type_integer_from_type(_type, _byte_order, _base), \ | |
226 | _nowrite, _user, 0), | |
40652b65 | 227 | |
f127e61e | 228 | #undef _ctf_array_encoded |
ceabb767 MD |
229 | #define _ctf_array_encoded(_type, _item, _src, _length, \ |
230 | _encoding, _byte_order, _elem_type_base, _user, _nowrite) \ | |
437d5aa5 MD |
231 | lttng_kernel_static_event_field(#_item, \ |
232 | lttng_kernel_static_type_array(_length, \ | |
233 | lttng_kernel_static_type_integer_from_type(_type, _byte_order, _elem_type_base), \ | |
234 | 0, \ | |
235 | _encoding), \ | |
236 | _nowrite, _user, 0), | |
40652b65 | 237 | |
43803cf2 MD |
238 | #undef _ctf_array_bitfield |
239 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
437d5aa5 MD |
240 | lttng_kernel_static_event_field(#_item, \ |
241 | lttng_kernel_static_type_array((_length) * sizeof(_type) * CHAR_BIT, \ | |
242 | lttng_kernel_static_type_integer(1, 1, 0, __LITTLE_ENDIAN, 10), \ | |
243 | lttng_alignof(_type), \ | |
244 | none), \ | |
245 | _nowrite, _user, 0), | |
43803cf2 | 246 | |
f127e61e MD |
247 | #undef _ctf_sequence_encoded |
248 | #define _ctf_sequence_encoded(_type, _item, _src, \ | |
249 | _length_type, _src_length, _encoding, \ | |
ceabb767 | 250 | _byte_order, _elem_type_base, _user, _nowrite) \ |
437d5aa5 MD |
251 | lttng_kernel_static_event_field("_" #_item "_length", \ |
252 | lttng_kernel_static_type_integer_from_type(_length_type, __BYTE_ORDER, 10), \ | |
253 | _nowrite, 0, 1), \ | |
254 | lttng_kernel_static_event_field(#_item, \ | |
f0039724 | 255 | lttng_kernel_static_type_sequence(NULL, /* Use previous field. */ \ |
437d5aa5 MD |
256 | lttng_kernel_static_type_integer_from_type(_type, _byte_order, _elem_type_base), \ |
257 | 0, \ | |
258 | _encoding), \ | |
259 | _nowrite, _user, 0), | |
43803cf2 MD |
260 | |
261 | #undef _ctf_sequence_bitfield | |
262 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
263 | _length_type, _src_length, \ | |
264 | _user, _nowrite) \ | |
437d5aa5 MD |
265 | lttng_kernel_static_event_field("_" #_item "_length", \ |
266 | lttng_kernel_static_type_integer_from_type(_length_type, __BYTE_ORDER, 10), \ | |
267 | _nowrite, 0, 1), \ | |
268 | lttng_kernel_static_event_field(#_item, \ | |
f0039724 | 269 | lttng_kernel_static_type_sequence(NULL, /* Use previous field. */ \ |
437d5aa5 MD |
270 | lttng_kernel_static_type_integer(1, 1, 0, __LITTLE_ENDIAN, 10), \ |
271 | lttng_alignof(_type), \ | |
272 | none), \ | |
273 | _nowrite, _user, 0), | |
40652b65 | 274 | |
f127e61e MD |
275 | #undef _ctf_string |
276 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
437d5aa5 MD |
277 | lttng_kernel_static_event_field(#_item, \ |
278 | lttng_kernel_static_type_string(UTF8), \ | |
279 | _nowrite, _user, 0), | |
280 | ||
281 | #undef _ctf_unused | |
282 | #define _ctf_unused(_src) | |
1d12cebd | 283 | |
141ddf28 MD |
284 | #undef _ctf_enum |
285 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
437d5aa5 MD |
286 | lttng_kernel_static_event_field(#_item, \ |
287 | lttng_kernel_static_type_enum(&__enum_##_name, \ | |
288 | lttng_kernel_static_type_integer_from_type(_type, __BYTE_ORDER, 10)), \ | |
289 | _nowrite, _user, 0), | |
f64dd4be MD |
290 | |
291 | #undef ctf_custom_field | |
292 | #define ctf_custom_field(_type, _item, _code) \ | |
437d5aa5 | 293 | lttng_kernel_static_event_field(#_item, PARAMS(_type), 0, 0, 1), |
f64dd4be MD |
294 | |
295 | #undef ctf_custom_type | |
296 | #define ctf_custom_type(...) __VA_ARGS__ | |
297 | ||
f127e61e MD |
298 | #undef TP_FIELDS |
299 | #define TP_FIELDS(...) __VA_ARGS__ /* Only one used in this phase */ | |
1d12cebd | 300 | |
3bc29f0a | 301 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 302 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
437d5aa5 | 303 | static const struct lttng_kernel_event_field *__event_fields___##_name[] = { \ |
f127e61e | 304 | _fields \ |
299338c8 MD |
305 | }; |
306 | ||
3bc29f0a | 307 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae MD |
308 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
309 | LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, PARAMS(_fields), _code_post) | |
f7bdf4db | 310 | |
141ddf28 MD |
311 | #undef LTTNG_TRACEPOINT_ENUM |
312 | #define LTTNG_TRACEPOINT_ENUM(_name, _values) \ | |
d96a4a7a | 313 | static const struct lttng_kernel_enum_desc __enum_##_name = { \ |
141ddf28 MD |
314 | .name = #_name, \ |
315 | .entries = __enum_values__##_name, \ | |
316 | .nr_entries = ARRAY_SIZE(__enum_values__##_name), \ | |
317 | }; | |
318 | ||
437d5aa5 | 319 | #define LTTNG_CREATE_FIELD_METADATA |
299338c8 | 320 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
437d5aa5 | 321 | #undef LTTNG_CREATE_FIELD_METADATA |
299338c8 | 322 | |
19c57fbf | 323 | /* |
c099397a | 324 | * Stage 3 of the trace events. |
19c57fbf MD |
325 | * |
326 | * Create probe callback prototypes. | |
327 | */ | |
328 | ||
f127e61e | 329 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb | 330 | #include <lttng/events-reset.h> |
19c57fbf MD |
331 | |
332 | #undef TP_PROTO | |
f127e61e | 333 | #define TP_PROTO(...) __VA_ARGS__ |
19c57fbf | 334 | |
3bc29f0a | 335 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 336 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
19c57fbf MD |
337 | static void __event_probe__##_name(void *__data, _proto); |
338 | ||
3bc29f0a | 339 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 340 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f7bdf4db MD |
341 | static void __event_probe__##_name(void *__data); |
342 | ||
19c57fbf MD |
343 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
344 | ||
f7bdf4db MD |
345 | /* |
346 | * Stage 4 of the trace events. | |
347 | * | |
40652b65 MD |
348 | * Create static inline function that calculates event size. |
349 | */ | |
350 | ||
f127e61e | 351 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb MD |
352 | #include <lttng/events-reset.h> |
353 | #include <lttng/events-write.h> | |
6db3d13b | 354 | |
f127e61e MD |
355 | #undef _ctf_integer_ext |
356 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ | |
a90917c3 | 357 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
0d1d4002 | 358 | __event_len += sizeof(_type); |
6db3d13b | 359 | |
f127e61e | 360 | #undef _ctf_array_encoded |
3834b99f | 361 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
a90917c3 | 362 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
0d1d4002 | 363 | __event_len += sizeof(_type) * (_length); |
6db3d13b | 364 | |
43803cf2 MD |
365 | #undef _ctf_array_bitfield |
366 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
3834b99f | 367 | _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite) |
43803cf2 | 368 | |
f127e61e MD |
369 | #undef _ctf_sequence_encoded |
370 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 371 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
372 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_length_type)); \ |
373 | __event_len += sizeof(_length_type); \ | |
a90917c3 | 374 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \ |
114667d5 MD |
375 | { \ |
376 | size_t __seqlen = (_src_length); \ | |
377 | \ | |
378 | if (unlikely(++this_cpu_ptr(<tng_dynamic_len_stack)->offset >= LTTNG_DYNAMIC_LEN_STACK_SIZE)) \ | |
379 | goto error; \ | |
380 | barrier(); /* reserve before use. */ \ | |
381 | this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = __seqlen; \ | |
382 | __event_len += sizeof(_type) * __seqlen; \ | |
383 | } | |
6db3d13b | 384 | |
43803cf2 MD |
385 | #undef _ctf_sequence_bitfield |
386 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
387 | _length_type, _src_length, \ | |
388 | _user, _nowrite) \ | |
389 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
390 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
391 | ||
d0255731 | 392 | /* |
f127e61e | 393 | * ctf_user_string includes \0. If returns 0, it faulted, so we set size to |
786b8312 | 394 | * 1 (\0 only). |
d0255731 | 395 | */ |
f127e61e MD |
396 | #undef _ctf_string |
397 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
114667d5 MD |
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 | if (_user) { \ | |
402 | __event_len += this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = \ | |
96d0248a | 403 | max_t(size_t, lttng_strlen_user_inatomic(_src), 1); \ |
114667d5 MD |
404 | } else { \ |
405 | __event_len += this_cpu_ptr(<tng_dynamic_len_stack)->stack[this_cpu_ptr(<tng_dynamic_len_stack)->offset - 1] = \ | |
1d84e8e7 | 406 | strlen((_src) ? (_src) : __LTTNG_NULL_STRING) + 1; \ |
114667d5 | 407 | } |
c6e3f225 | 408 | |
141ddf28 MD |
409 | #undef _ctf_enum |
410 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
411 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
412 | ||
f64dd4be MD |
413 | #undef ctf_align |
414 | #define ctf_align(_type) \ | |
415 | __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); | |
416 | ||
417 | #undef ctf_custom_field | |
418 | #define ctf_custom_field(_type, _item, _code) \ | |
419 | { \ | |
420 | _code \ | |
421 | } | |
422 | ||
423 | #undef ctf_custom_code | |
424 | #define ctf_custom_code(...) __VA_ARGS__ | |
425 | ||
0d1d4002 | 426 | #undef TP_PROTO |
f127e61e | 427 | #define TP_PROTO(...) __VA_ARGS__ |
6db3d13b | 428 | |
f127e61e MD |
429 | #undef TP_FIELDS |
430 | #define TP_FIELDS(...) __VA_ARGS__ | |
6db3d13b | 431 | |
7ca580f8 MD |
432 | #undef TP_locvar |
433 | #define TP_locvar(...) __VA_ARGS__ | |
434 | ||
3bc29f0a | 435 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 436 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
114667d5 | 437 | static inline ssize_t __event_get_size__##_name(void *__tp_locvar, _proto) \ |
0d1d4002 MD |
438 | { \ |
439 | size_t __event_len = 0; \ | |
d3de7f14 | 440 | unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \ |
7ca580f8 | 441 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
d3de7f14 | 442 | \ |
f127e61e | 443 | _fields \ |
d3de7f14 | 444 | return __event_len; \ |
114667d5 MD |
445 | \ |
446 | error: \ | |
447 | __attribute__((unused)); \ | |
448 | return -1; \ | |
d3de7f14 MD |
449 | } |
450 | ||
3bc29f0a | 451 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 452 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
114667d5 | 453 | static inline ssize_t __event_get_size__##_name(void *__tp_locvar) \ |
d3de7f14 MD |
454 | { \ |
455 | size_t __event_len = 0; \ | |
456 | unsigned int __dynamic_len_idx __attribute__((unused)) = 0; \ | |
7ca580f8 | 457 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
0d1d4002 | 458 | \ |
f127e61e | 459 | _fields \ |
0d1d4002 | 460 | return __event_len; \ |
114667d5 MD |
461 | \ |
462 | error: \ | |
463 | __attribute__((unused)); \ | |
464 | return -1; \ | |
6db3d13b | 465 | } |
40652b65 MD |
466 | |
467 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
468 | ||
f127e61e | 469 | |
40652b65 | 470 | /* |
f127e61e | 471 | * Stage 4.1 of tracepoint event generation. |
e763dbf5 | 472 | * |
f127e61e MD |
473 | * Create static inline function that layout the filter stack data. |
474 | * We make both write and nowrite data available to the filter. | |
e763dbf5 MD |
475 | */ |
476 | ||
f127e61e | 477 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb MD |
478 | #include <lttng/events-reset.h> |
479 | #include <lttng/events-write.h> | |
480 | #include <lttng/events-nowrite.h> | |
f127e61e MD |
481 | |
482 | #undef _ctf_integer_ext_fetched | |
483 | #define _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
484 | if (lttng_is_signed_type(_type)) { \ | |
485 | int64_t __ctf_tmp_int64; \ | |
486 | switch (sizeof(_type)) { \ | |
487 | case 1: \ | |
488 | { \ | |
489 | union { _type t; int8_t v; } __tmp = { (_type) (_src) }; \ | |
490 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ | |
491 | break; \ | |
492 | } \ | |
493 | case 2: \ | |
494 | { \ | |
495 | union { _type t; int16_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
496 | if (_byte_order != __BYTE_ORDER) \ |
497 | __swab16s(&__tmp.v); \ | |
f127e61e MD |
498 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
499 | break; \ | |
500 | } \ | |
501 | case 4: \ | |
502 | { \ | |
503 | union { _type t; int32_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
504 | if (_byte_order != __BYTE_ORDER) \ |
505 | __swab32s(&__tmp.v); \ | |
f127e61e MD |
506 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
507 | break; \ | |
508 | } \ | |
509 | case 8: \ | |
510 | { \ | |
511 | union { _type t; int64_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
512 | if (_byte_order != __BYTE_ORDER) \ |
513 | __swab64s(&__tmp.v); \ | |
f127e61e MD |
514 | __ctf_tmp_int64 = (int64_t) __tmp.v; \ |
515 | break; \ | |
516 | } \ | |
517 | default: \ | |
518 | BUG_ON(1); \ | |
519 | }; \ | |
520 | memcpy(__stack_data, &__ctf_tmp_int64, sizeof(int64_t)); \ | |
521 | } else { \ | |
522 | uint64_t __ctf_tmp_uint64; \ | |
523 | switch (sizeof(_type)) { \ | |
524 | case 1: \ | |
525 | { \ | |
526 | union { _type t; uint8_t v; } __tmp = { (_type) (_src) }; \ | |
527 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ | |
528 | break; \ | |
529 | } \ | |
530 | case 2: \ | |
531 | { \ | |
532 | union { _type t; uint16_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
533 | if (_byte_order != __BYTE_ORDER) \ |
534 | __swab16s(&__tmp.v); \ | |
f127e61e MD |
535 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
536 | break; \ | |
537 | } \ | |
538 | case 4: \ | |
539 | { \ | |
540 | union { _type t; uint32_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
541 | if (_byte_order != __BYTE_ORDER) \ |
542 | __swab32s(&__tmp.v); \ | |
f127e61e MD |
543 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
544 | break; \ | |
545 | } \ | |
546 | case 8: \ | |
547 | { \ | |
548 | union { _type t; uint64_t v; } __tmp = { (_type) (_src) }; \ | |
bf1a9179 MD |
549 | if (_byte_order != __BYTE_ORDER) \ |
550 | __swab64s(&__tmp.v); \ | |
f127e61e MD |
551 | __ctf_tmp_uint64 = (uint64_t) __tmp.v; \ |
552 | break; \ | |
553 | } \ | |
554 | default: \ | |
555 | BUG_ON(1); \ | |
556 | }; \ | |
557 | memcpy(__stack_data, &__ctf_tmp_uint64, sizeof(uint64_t)); \ | |
558 | } \ | |
559 | __stack_data += sizeof(int64_t); | |
560 | ||
561 | #undef _ctf_integer_ext_isuser0 | |
562 | #define _ctf_integer_ext_isuser0(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
563 | _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) | |
564 | ||
565 | #undef _ctf_integer_ext_isuser1 | |
566 | #define _ctf_integer_ext_isuser1(_type, _item, _user_src, _byte_order, _base, _nowrite) \ | |
3c8ebbc8 MD |
567 | { \ |
568 | union { \ | |
569 | char __array[sizeof(_user_src)]; \ | |
570 | __typeof__(_user_src) __v; \ | |
571 | } __tmp_fetch; \ | |
572 | if (lib_ring_buffer_copy_from_user_check_nofault(__tmp_fetch.__array, \ | |
573 | &(_user_src), sizeof(_user_src))) \ | |
574 | memset(__tmp_fetch.__array, 0, sizeof(__tmp_fetch.__array)); \ | |
575 | _ctf_integer_ext_fetched(_type, _item, __tmp_fetch.__v, _byte_order, _base, _nowrite) \ | |
f127e61e | 576 | } |
e763dbf5 | 577 | |
f127e61e MD |
578 | #undef _ctf_integer_ext |
579 | #define _ctf_integer_ext(_type, _item, _user_src, _byte_order, _base, _user, _nowrite) \ | |
580 | _ctf_integer_ext_isuser##_user(_type, _item, _user_src, _byte_order, _base, _nowrite) | |
581 | ||
582 | #undef _ctf_array_encoded | |
3834b99f | 583 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
584 | { \ |
585 | unsigned long __ctf_tmp_ulong = (unsigned long) (_length); \ | |
586 | const void *__ctf_tmp_ptr = (_src); \ | |
587 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ | |
588 | __stack_data += sizeof(unsigned long); \ | |
6b272cda MD |
589 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
590 | __stack_data += sizeof(void *); \ | |
f127e61e MD |
591 | } |
592 | ||
43803cf2 MD |
593 | #undef _ctf_array_bitfield |
594 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
3834b99f | 595 | _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite) |
43803cf2 | 596 | |
f127e61e MD |
597 | #undef _ctf_sequence_encoded |
598 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 599 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
600 | { \ |
601 | unsigned long __ctf_tmp_ulong = (unsigned long) (_src_length); \ | |
602 | const void *__ctf_tmp_ptr = (_src); \ | |
603 | memcpy(__stack_data, &__ctf_tmp_ulong, sizeof(unsigned long)); \ | |
604 | __stack_data += sizeof(unsigned long); \ | |
6b272cda MD |
605 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
606 | __stack_data += sizeof(void *); \ | |
f127e61e MD |
607 | } |
608 | ||
43803cf2 MD |
609 | #undef _ctf_sequence_bitfield |
610 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
611 | _length_type, _src_length, \ | |
612 | _user, _nowrite) \ | |
613 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
614 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
615 | ||
f127e61e MD |
616 | #undef _ctf_string |
617 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
618 | { \ | |
1d84e8e7 MD |
619 | const void *__ctf_tmp_ptr = \ |
620 | ((_src) ? (_src) : __LTTNG_NULL_STRING); \ | |
6b272cda MD |
621 | memcpy(__stack_data, &__ctf_tmp_ptr, sizeof(void *)); \ |
622 | __stack_data += sizeof(void *); \ | |
f127e61e | 623 | } |
c6e3f225 | 624 | |
141ddf28 MD |
625 | #undef _ctf_enum |
626 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
627 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
628 | ||
e763dbf5 | 629 | #undef TP_PROTO |
f127e61e | 630 | #define TP_PROTO(...) __VA_ARGS__ |
e763dbf5 | 631 | |
f127e61e MD |
632 | #undef TP_FIELDS |
633 | #define TP_FIELDS(...) __VA_ARGS__ | |
e763dbf5 | 634 | |
7ca580f8 MD |
635 | #undef TP_locvar |
636 | #define TP_locvar(...) __VA_ARGS__ | |
637 | ||
f127e61e | 638 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 639 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e | 640 | static inline \ |
99d223ad | 641 | void __event_prepare_interpreter_stack__##_name(char *__stack_data, \ |
f127e61e | 642 | void *__tp_locvar) \ |
e763dbf5 | 643 | { \ |
7ca580f8 MD |
644 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
645 | \ | |
f127e61e | 646 | _fields \ |
e763dbf5 MD |
647 | } |
648 | ||
f127e61e | 649 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 650 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e | 651 | static inline \ |
99d223ad | 652 | void __event_prepare_interpreter_stack__##_name(char *__stack_data, \ |
f127e61e | 653 | void *__tp_locvar, _proto) \ |
d3de7f14 | 654 | { \ |
7ca580f8 MD |
655 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ |
656 | \ | |
f127e61e | 657 | _fields \ |
d3de7f14 MD |
658 | } |
659 | ||
e763dbf5 MD |
660 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
661 | ||
e763dbf5 | 662 | /* |
f127e61e | 663 | * Stage 5 of the trace events. |
40652b65 | 664 | * |
f127e61e | 665 | * Create static inline function that calculates event payload alignment. |
3c4ffab9 MD |
666 | */ |
667 | ||
f127e61e | 668 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb MD |
669 | #include <lttng/events-reset.h> |
670 | #include <lttng/events-write.h> | |
3c4ffab9 | 671 | |
f127e61e MD |
672 | #undef _ctf_integer_ext |
673 | #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ | |
674 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
3c4ffab9 | 675 | |
f127e61e | 676 | #undef _ctf_array_encoded |
3834b99f | 677 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e | 678 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); |
3c4ffab9 | 679 | |
43803cf2 MD |
680 | #undef _ctf_array_bitfield |
681 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
3834b99f | 682 | _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite) |
43803cf2 | 683 | |
f127e61e MD |
684 | #undef _ctf_sequence_encoded |
685 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 686 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
687 | __event_align = max_t(size_t, __event_align, lttng_alignof(_length_type)); \ |
688 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
64c796d8 | 689 | |
43803cf2 MD |
690 | #undef _ctf_sequence_bitfield |
691 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
692 | _length_type, _src_length, \ | |
693 | _user, _nowrite) \ | |
694 | _ctf_sequence_encoded(_type, _item, _src, _length_type, _src_length, \ | |
695 | none, __LITTLE_ENDIAN, 10, _user, _nowrite) | |
696 | ||
f127e61e MD |
697 | #undef _ctf_string |
698 | #define _ctf_string(_item, _src, _user, _nowrite) | |
64c796d8 | 699 | |
141ddf28 MD |
700 | #undef _ctf_enum |
701 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
702 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
703 | ||
f64dd4be MD |
704 | #undef ctf_align |
705 | #define ctf_align(_type) \ | |
706 | __event_align = max_t(size_t, __event_align, lttng_alignof(_type)); | |
707 | ||
f127e61e MD |
708 | #undef TP_PROTO |
709 | #define TP_PROTO(...) __VA_ARGS__ | |
84da5206 | 710 | |
f127e61e MD |
711 | #undef TP_FIELDS |
712 | #define TP_FIELDS(...) __VA_ARGS__ | |
c6e3f225 | 713 | |
f127e61e MD |
714 | #undef TP_locvar |
715 | #define TP_locvar(...) __VA_ARGS__ | |
3c4ffab9 | 716 | |
f64dd4be MD |
717 | #undef ctf_custom_field |
718 | #define ctf_custom_field(_type, _item, _code) _code | |
719 | ||
720 | #undef ctf_custom_code | |
721 | #define ctf_custom_code(...) \ | |
722 | { \ | |
723 | __VA_ARGS__ \ | |
724 | } | |
725 | ||
f127e61e | 726 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 727 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
728 | static inline size_t __event_get_align__##_name(void *__tp_locvar, _proto) \ |
729 | { \ | |
730 | size_t __event_align = 1; \ | |
731 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ | |
732 | \ | |
733 | _fields \ | |
734 | return __event_align; \ | |
735 | } | |
3c4ffab9 | 736 | |
3bc29f0a | 737 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 738 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
f127e61e MD |
739 | static inline size_t __event_get_align__##_name(void *__tp_locvar) \ |
740 | { \ | |
741 | size_t __event_align = 1; \ | |
742 | struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar; \ | |
743 | \ | |
744 | _fields \ | |
745 | return __event_align; \ | |
746 | } | |
d3de7f14 | 747 | |
3c4ffab9 MD |
748 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
749 | ||
3c4ffab9 | 750 | /* |
f127e61e | 751 | * Stage 6 of tracepoint event generation. |
e763dbf5 | 752 | * |
f127e61e MD |
753 | * Create the probe function. This function calls event size calculation |
754 | * and writes event data into the buffer. | |
40652b65 MD |
755 | */ |
756 | ||
f127e61e | 757 | /* Reset all macros within TRACEPOINT_EVENT */ |
3b4aafcb MD |
758 | #include <lttng/events-reset.h> |
759 | #include <lttng/events-write.h> | |
c6e3f225 | 760 | |
f127e61e MD |
761 | #undef _ctf_integer_ext_fetched |
762 | #define _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
e763dbf5 | 763 | { \ |
f127e61e MD |
764 | _type __tmp = _src; \ |
765 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\ | |
aaa4004a | 766 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ |
f127e61e MD |
767 | } |
768 | ||
769 | #undef _ctf_integer_ext_isuser0 | |
770 | #define _ctf_integer_ext_isuser0(_type, _item, _src, _byte_order, _base, _nowrite) \ | |
771 | _ctf_integer_ext_fetched(_type, _item, _src, _byte_order, _base, _nowrite) | |
772 | ||
773 | #undef _ctf_integer_ext_isuser1 | |
774 | #define _ctf_integer_ext_isuser1(_type, _item, _user_src, _byte_order, _base, _nowrite) \ | |
775 | { \ | |
3c8ebbc8 MD |
776 | union { \ |
777 | char __array[sizeof(_user_src)]; \ | |
778 | __typeof__(_user_src) __v; \ | |
779 | } __tmp_fetch; \ | |
780 | if (lib_ring_buffer_copy_from_user_check_nofault(__tmp_fetch.__array, \ | |
781 | &(_user_src), sizeof(_user_src))) \ | |
782 | memset(__tmp_fetch.__array, 0, sizeof(__tmp_fetch.__array)); \ | |
783 | _ctf_integer_ext_fetched(_type, _item, __tmp_fetch.__v, _byte_order, _base, _nowrite) \ | |
f127e61e MD |
784 | } |
785 | ||
786 | #undef _ctf_integer_ext | |
787 | #define _ctf_integer_ext(_type, _item, _user_src, _byte_order, _base, _user, _nowrite) \ | |
788 | _ctf_integer_ext_isuser##_user(_type, _item, _user_src, _byte_order, _base, _nowrite) | |
789 | ||
790 | #undef _ctf_array_encoded | |
3834b99f | 791 | #define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \ |
f127e61e MD |
792 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ |
793 | if (_user) { \ | |
794 | __chan->ops->event_write_from_user(&__ctx, _src, sizeof(_type) * (_length)); \ | |
795 | } else { \ | |
796 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); \ | |
797 | } | |
798 | ||
43803cf2 MD |
799 | #if (__BYTE_ORDER == __LITTLE_ENDIAN) |
800 | #undef _ctf_array_bitfield | |
801 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
802 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
803 | if (_user) { \ | |
804 | __chan->ops->event_write_from_user(&__ctx, _src, sizeof(_type) * (_length)); \ | |
805 | } else { \ | |
806 | __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length)); \ | |
807 | } | |
808 | #else /* #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
809 | /* | |
810 | * For big endian, we need to byteswap into little endian. | |
811 | */ | |
812 | #undef _ctf_array_bitfield | |
813 | #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ | |
814 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
815 | { \ | |
816 | size_t _i; \ | |
817 | \ | |
818 | for (_i = 0; _i < (_length); _i++) { \ | |
819 | _type _tmp; \ | |
820 | \ | |
821 | if (_user) { \ | |
822 | if (get_user(_tmp, (_type *) _src + _i)) \ | |
823 | _tmp = 0; \ | |
824 | } else { \ | |
825 | _tmp = ((_type *) _src)[_i]; \ | |
826 | } \ | |
827 | switch (sizeof(_type)) { \ | |
828 | case 1: \ | |
829 | break; \ | |
830 | case 2: \ | |
831 | _tmp = cpu_to_le16(_tmp); \ | |
832 | break; \ | |
833 | case 4: \ | |
834 | _tmp = cpu_to_le32(_tmp); \ | |
835 | break; \ | |
836 | case 8: \ | |
837 | _tmp = cpu_to_le64(_tmp); \ | |
838 | break; \ | |
839 | default: \ | |
840 | BUG_ON(1); \ | |
841 | } \ | |
842 | __chan->ops->event_write(&__ctx, &_tmp, sizeof(_type)); \ | |
843 | } \ | |
844 | } | |
845 | #endif /* #else #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
846 | ||
f127e61e MD |
847 | #undef _ctf_sequence_encoded |
848 | #define _ctf_sequence_encoded(_type, _item, _src, _length_type, \ | |
57ede728 | 849 | _src_length, _encoding, _byte_order, _base, _user, _nowrite) \ |
84da5206 | 850 | { \ |
114667d5 | 851 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx]; \ |
f127e61e MD |
852 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
853 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
84da5206 | 854 | } \ |
f127e61e MD |
855 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ |
856 | if (_user) { \ | |
857 | __chan->ops->event_write_from_user(&__ctx, _src, \ | |
858 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
859 | } else { \ | |
860 | __chan->ops->event_write(&__ctx, _src, \ | |
861 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
862 | } | |
863 | ||
43803cf2 MD |
864 | #if (__BYTE_ORDER == __LITTLE_ENDIAN) |
865 | #undef _ctf_sequence_bitfield | |
866 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
867 | _length_type, _src_length, \ | |
868 | _user, _nowrite) \ | |
869 | { \ | |
114667d5 | 870 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx] * sizeof(_type) * CHAR_BIT; \ |
43803cf2 MD |
871 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
872 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
873 | } \ | |
874 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
875 | if (_user) { \ | |
876 | __chan->ops->event_write_from_user(&__ctx, _src, \ | |
877 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
878 | } else { \ | |
879 | __chan->ops->event_write(&__ctx, _src, \ | |
880 | sizeof(_type) * __get_dynamic_len(dest)); \ | |
881 | } | |
882 | #else /* #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
883 | /* | |
884 | * For big endian, we need to byteswap into little endian. | |
885 | */ | |
886 | #undef _ctf_sequence_bitfield | |
887 | #define _ctf_sequence_bitfield(_type, _item, _src, \ | |
888 | _length_type, _src_length, \ | |
889 | _user, _nowrite) \ | |
890 | { \ | |
114667d5 | 891 | _length_type __tmpl = this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx] * sizeof(_type) * CHAR_BIT; \ |
43803cf2 MD |
892 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\ |
893 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\ | |
894 | } \ | |
895 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \ | |
896 | { \ | |
897 | size_t _i, _length; \ | |
898 | \ | |
899 | _length = __get_dynamic_len(dest); \ | |
900 | for (_i = 0; _i < _length; _i++) { \ | |
901 | _type _tmp; \ | |
902 | \ | |
903 | if (_user) { \ | |
904 | if (get_user(_tmp, (_type *) _src + _i)) \ | |
905 | _tmp = 0; \ | |
906 | } else { \ | |
907 | _tmp = ((_type *) _src)[_i]; \ | |
908 | } \ | |
909 | switch (sizeof(_type)) { \ | |
910 | case 1: \ | |
911 | break; \ | |
912 | case 2: \ | |
913 | _tmp = cpu_to_le16(_tmp); \ | |
914 | break; \ | |
915 | case 4: \ | |
916 | _tmp = cpu_to_le32(_tmp); \ | |
917 | break; \ | |
918 | case 8: \ | |
919 | _tmp = cpu_to_le64(_tmp); \ | |
920 | break; \ | |
921 | default: \ | |
922 | BUG_ON(1); \ | |
923 | } \ | |
924 | __chan->ops->event_write(&__ctx, &_tmp, sizeof(_type)); \ | |
925 | } \ | |
926 | } | |
927 | #endif /* #else #if (__BYTE_ORDER == __LITTLE_ENDIAN) */ | |
928 | ||
f127e61e MD |
929 | #undef _ctf_string |
930 | #define _ctf_string(_item, _src, _user, _nowrite) \ | |
f127e61e | 931 | if (_user) { \ |
1d84e8e7 | 932 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(*(_src))); \ |
f127e61e MD |
933 | __chan->ops->event_strcpy_from_user(&__ctx, _src, \ |
934 | __get_dynamic_len(dest)); \ | |
935 | } else { \ | |
1d84e8e7 MD |
936 | const char *__ctf_tmp_string = \ |
937 | ((_src) ? (_src) : __LTTNG_NULL_STRING); \ | |
938 | lib_ring_buffer_align_ctx(&__ctx, \ | |
939 | lttng_alignof(*__ctf_tmp_string)); \ | |
940 | __chan->ops->event_strcpy(&__ctx, __ctf_tmp_string, \ | |
f127e61e MD |
941 | __get_dynamic_len(dest)); \ |
942 | } | |
e763dbf5 | 943 | |
141ddf28 MD |
944 | #undef _ctf_enum |
945 | #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ | |
946 | _ctf_integer_ext(_type, _item, _src, __BYTE_ORDER, 10, _user, _nowrite) | |
f64dd4be MD |
947 | |
948 | #undef ctf_align | |
949 | #define ctf_align(_type) \ | |
950 | lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); | |
951 | ||
952 | #undef ctf_custom_field | |
953 | #define ctf_custom_field(_type, _item, _code) _code | |
954 | ||
955 | #undef ctf_custom_code | |
956 | #define ctf_custom_code(...) \ | |
957 | { \ | |
958 | __VA_ARGS__ \ | |
959 | } | |
960 | ||
e763dbf5 | 961 | /* Beware: this get len actually consumes the len value */ |
f127e61e | 962 | #undef __get_dynamic_len |
114667d5 | 963 | #define __get_dynamic_len(field) this_cpu_ptr(<tng_dynamic_len_stack)->stack[__dynamic_len_idx++] |
e763dbf5 MD |
964 | |
965 | #undef TP_PROTO | |
f127e61e | 966 | #define TP_PROTO(...) __VA_ARGS__ |
e763dbf5 MD |
967 | |
968 | #undef TP_ARGS | |
f127e61e | 969 | #define TP_ARGS(...) __VA_ARGS__ |
e763dbf5 | 970 | |
f127e61e MD |
971 | #undef TP_FIELDS |
972 | #define TP_FIELDS(...) __VA_ARGS__ | |
e763dbf5 | 973 | |
7ca580f8 MD |
974 | #undef TP_locvar |
975 | #define TP_locvar(...) __VA_ARGS__ | |
976 | ||
265822ae MD |
977 | #undef TP_code_pre |
978 | #define TP_code_pre(...) __VA_ARGS__ | |
979 | ||
980 | #undef TP_code_post | |
981 | #define TP_code_post(...) __VA_ARGS__ | |
7ca580f8 | 982 | |
c337ddc2 MD |
983 | /* |
984 | * For state dump, check that "session" argument (mandatory) matches the | |
985 | * session this event belongs to. Ensures that we write state dump data only | |
986 | * into the started session, not into all sessions. | |
987 | */ | |
988 | #ifdef TP_SESSION_CHECK | |
989 | #define _TP_SESSION_CHECK(session, csession) (session == csession) | |
990 | #else /* TP_SESSION_CHECK */ | |
991 | #define _TP_SESSION_CHECK(session, csession) 1 | |
992 | #endif /* TP_SESSION_CHECK */ | |
993 | ||
f9771d39 | 994 | /* |
f127e61e MD |
995 | * Using twice size for filter stack data to hold size and pointer for |
996 | * each field (worse case). For integers, max size required is 64-bit. | |
997 | * Same for double-precision floats. Those fit within | |
998 | * 2*sizeof(unsigned long) for all supported architectures. | |
999 | * Perform UNION (||) of filter runtime list. | |
f9771d39 | 1000 | */ |
e2d5dbc7 MD |
1001 | #undef _LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
1002 | #define _LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _data_proto, _locvar_args, _locvar, _code_pre, _fields, _code_post) \ | |
1003 | static void __event_probe__##_name(_data_proto) \ | |
1004 | { \ | |
1005 | struct probe_local_vars { _locvar }; \ | |
1006 | struct lttng_kernel_event_common *__event = __data; \ | |
1007 | struct lttng_probe_ctx __lttng_probe_ctx = { \ | |
1008 | .event = __event, \ | |
1009 | .interruptible = !irqs_disabled(), \ | |
1010 | }; \ | |
1011 | union { \ | |
1012 | size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)]; \ | |
1013 | char __interpreter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \ | |
1014 | } __stackvar; \ | |
1015 | size_t __orig_dynamic_len_offset, __dynamic_len_idx __attribute__((unused)); \ | |
1016 | struct probe_local_vars __tp_locvar; \ | |
1017 | struct probe_local_vars *tp_locvar __attribute__((unused)) = \ | |
1018 | &__tp_locvar; \ | |
1019 | bool __interpreter_stack_prepared = false; \ | |
1020 | \ | |
1021 | switch (__event->type) { \ | |
1022 | case LTTNG_KERNEL_EVENT_TYPE_RECORDER: \ | |
1023 | { \ | |
1024 | struct lttng_kernel_event_recorder *__event_recorder = \ | |
1025 | container_of(__event, struct lttng_kernel_event_recorder, parent); \ | |
1026 | struct lttng_channel *__chan = __event_recorder->chan; \ | |
1027 | struct lttng_session *__session = __chan->session; \ | |
1028 | struct lttng_id_tracker_rcu *__lf; \ | |
1029 | \ | |
1030 | if (!_TP_SESSION_CHECK(session, __session)) \ | |
1031 | return; \ | |
1032 | if (unlikely(!LTTNG_READ_ONCE(__session->active))) \ | |
1033 | return; \ | |
1034 | if (unlikely(!LTTNG_READ_ONCE(__chan->enabled))) \ | |
1035 | return; \ | |
1036 | __lf = lttng_rcu_dereference(__session->pid_tracker.p); \ | |
1037 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, current->tgid))) \ | |
1038 | return; \ | |
1039 | __lf = lttng_rcu_dereference(__session->vpid_tracker.p); \ | |
1040 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, task_tgid_vnr(current)))) \ | |
1041 | return; \ | |
1042 | __lf = lttng_rcu_dereference(__session->uid_tracker.p); \ | |
1043 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
1044 | lttng_current_uid()))) \ | |
1045 | return; \ | |
1046 | __lf = lttng_rcu_dereference(__session->vuid_tracker.p); \ | |
1047 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
1048 | lttng_current_vuid()))) \ | |
1049 | return; \ | |
1050 | __lf = lttng_rcu_dereference(__session->gid_tracker.p); \ | |
1051 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
1052 | lttng_current_gid()))) \ | |
1053 | return; \ | |
1054 | __lf = lttng_rcu_dereference(__session->vgid_tracker.p); \ | |
1055 | if (__lf && likely(!lttng_id_tracker_lookup(__lf, \ | |
1056 | lttng_current_vgid()))) \ | |
1057 | return; \ | |
1058 | break; \ | |
1059 | } \ | |
1060 | case LTTNG_KERNEL_EVENT_TYPE_NOTIFIER: \ | |
1061 | break; \ | |
1062 | default: \ | |
1063 | WARN_ON_ONCE(1); \ | |
1064 | } \ | |
1065 | if (unlikely(!READ_ONCE(__event->enabled))) \ | |
1066 | return; \ | |
1067 | __orig_dynamic_len_offset = this_cpu_ptr(<tng_dynamic_len_stack)->offset; \ | |
1068 | __dynamic_len_idx = __orig_dynamic_len_offset; \ | |
1069 | _code_pre \ | |
1070 | if (unlikely(READ_ONCE(__event->eval_filter))) { \ | |
e2d5dbc7 MD |
1071 | __event_prepare_interpreter_stack__##_name(__stackvar.__interpreter_stack_data, \ |
1072 | _locvar_args); \ | |
1073 | __interpreter_stack_prepared = true; \ | |
8a445457 MD |
1074 | if (likely(__event->run_filter(__event, \ |
1075 | __stackvar.__interpreter_stack_data, &__lttng_probe_ctx, NULL) != LTTNG_KERNEL_EVENT_FILTER_ACCEPT)) \ | |
e2d5dbc7 MD |
1076 | goto __post; \ |
1077 | } \ | |
1078 | switch (__event->type) { \ | |
1079 | case LTTNG_KERNEL_EVENT_TYPE_RECORDER: \ | |
1080 | { \ | |
1081 | struct lttng_kernel_event_recorder *__event_recorder = \ | |
1082 | container_of(__event, struct lttng_kernel_event_recorder, parent); \ | |
1083 | struct lttng_channel *__chan = __event_recorder->chan; \ | |
1084 | struct lib_ring_buffer_ctx __ctx; \ | |
1085 | ssize_t __event_len; \ | |
1086 | size_t __event_align; \ | |
1087 | int __ret; \ | |
1088 | \ | |
1089 | __event_len = __event_get_size__##_name(_locvar_args); \ | |
1090 | if (unlikely(__event_len < 0)) { \ | |
1091 | lib_ring_buffer_lost_event_too_big(__chan->chan); \ | |
1092 | goto __post; \ | |
1093 | } \ | |
1094 | __event_align = __event_get_align__##_name(_locvar_args); \ | |
c7d9db61 MD |
1095 | lib_ring_buffer_ctx_init(&__ctx, __event_recorder, __event_len, \ |
1096 | __event_align, &__lttng_probe_ctx); \ | |
cefd899f | 1097 | __ret = __chan->ops->event_reserve(&__ctx); \ |
e2d5dbc7 MD |
1098 | if (__ret < 0) \ |
1099 | goto __post; \ | |
1100 | _fields \ | |
1101 | __chan->ops->event_commit(&__ctx); \ | |
1102 | break; \ | |
1103 | } \ | |
1104 | case LTTNG_KERNEL_EVENT_TYPE_NOTIFIER: \ | |
1105 | { \ | |
1106 | struct lttng_kernel_event_notifier *__event_notifier = \ | |
1107 | container_of(__event, struct lttng_kernel_event_notifier, parent); \ | |
1108 | struct lttng_kernel_notification_ctx __notif_ctx; \ | |
1109 | \ | |
1110 | __notif_ctx.eval_capture = LTTNG_READ_ONCE(__event_notifier->eval_capture); \ | |
1111 | if (unlikely(!__interpreter_stack_prepared && __notif_ctx.eval_capture)) \ | |
1112 | __event_prepare_interpreter_stack__##_name( \ | |
1113 | __stackvar.__interpreter_stack_data, \ | |
1114 | _locvar_args); \ | |
1115 | \ | |
1116 | __event_notifier->notification_send(__event_notifier, \ | |
e2d5dbc7 | 1117 | __stackvar.__interpreter_stack_data, \ |
a775608d | 1118 | &__lttng_probe_ctx, \ |
e2d5dbc7 MD |
1119 | &__notif_ctx); \ |
1120 | break; \ | |
1121 | } \ | |
1122 | default: \ | |
1123 | WARN_ON_ONCE(1); \ | |
1124 | } \ | |
1125 | __post: \ | |
1126 | _code_post \ | |
1127 | barrier(); /* use before un-reserve. */ \ | |
1128 | this_cpu_ptr(<tng_dynamic_len_stack)->offset = __orig_dynamic_len_offset; \ | |
1129 | return; \ | |
1130 | } | |
1131 | ||
3bc29f0a | 1132 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE |
265822ae | 1133 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ |
e2d5dbc7 MD |
1134 | _LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, PARAMS(void *__data, _proto), PARAMS(tp_locvar, _args), \ |
1135 | PARAMS(_locvar), PARAMS(_code_pre), PARAMS(_fields), PARAMS(_code_post)) | |
e763dbf5 | 1136 | |
3bc29f0a | 1137 | #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS |
265822ae | 1138 | #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ |
e2d5dbc7 MD |
1139 | _LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, PARAMS(void *__data), PARAMS(tp_locvar), PARAMS(_locvar), \ |
1140 | PARAMS(_code_pre), PARAMS(_fields), PARAMS(_code_post)) | |
f7bdf4db | 1141 | |
e763dbf5 MD |
1142 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
1143 | ||
f127e61e MD |
1144 | #undef __get_dynamic_len |
1145 | ||
1146 | /* | |
1147 | * Stage 7 of the trace events. | |
1148 | * | |
1149 | * Create event descriptions. | |
1150 | */ | |
1151 | ||
1152 | /* Named field types must be defined in lttng-types.h */ | |
1153 | ||
3b4aafcb | 1154 | #include <lttng/events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
f127e61e MD |
1155 | |
1156 | #ifndef TP_PROBE_CB | |
1157 | #define TP_PROBE_CB(_template) &__event_probe__##_template | |
1158 | #endif | |
1159 | ||
1160 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
1161 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
437d5aa5 MD |
1162 | static const struct lttng_kernel_event_desc __event_desc___##_map = { \ |
1163 | .event_name = #_map, \ | |
1164 | .event_kname = #_name, \ | |
e2d5dbc7 | 1165 | .probe_callback = (void (*)(void)) TP_PROBE_CB(_template), \ |
f127e61e | 1166 | .fields = __event_fields___##_template, \ |
f127e61e MD |
1167 | .nr_fields = ARRAY_SIZE(__event_fields___##_template), \ |
1168 | .owner = THIS_MODULE, \ | |
1169 | }; | |
1170 | ||
1171 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
1172 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
1173 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) | |
1174 | ||
1175 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
1176 | ||
1177 | /* | |
1178 | * Stage 8 of the trace events. | |
1179 | * | |
1180 | * Create an array of event description pointers. | |
1181 | */ | |
1182 | ||
3b4aafcb | 1183 | #include <lttng/events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
f127e61e MD |
1184 | |
1185 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS | |
1186 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ | |
1187 | &__event_desc___##_map, | |
1188 | ||
1189 | #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP | |
1190 | #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ | |
1191 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) | |
1192 | ||
1193 | #define TP_ID1(_token, _system) _token##_system | |
1194 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1195 | ||
437d5aa5 | 1196 | static const struct lttng_kernel_event_desc *TP_ID(__event_desc___, TRACE_SYSTEM)[] = { |
f127e61e MD |
1197 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
1198 | }; | |
1199 | ||
1200 | #undef TP_ID1 | |
1201 | #undef TP_ID | |
1202 | ||
1203 | /* | |
1204 | * Stage 9 of the trace events. | |
1205 | * | |
1206 | * Create a toplevel descriptor for the whole probe. | |
1207 | */ | |
1208 | ||
1209 | #define TP_ID1(_token, _system) _token##_system | |
1210 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1211 | ||
1212 | /* non-const because list head will be modified when registered. */ | |
437d5aa5 MD |
1213 | static __used struct lttng_kernel_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = { |
1214 | .provider_name = __stringify(TRACE_SYSTEM), | |
f127e61e MD |
1215 | .event_desc = TP_ID(__event_desc___, TRACE_SYSTEM), |
1216 | .nr_events = ARRAY_SIZE(TP_ID(__event_desc___, TRACE_SYSTEM)), | |
1217 | .head = { NULL, NULL }, | |
1218 | .lazy_init_head = { NULL, NULL }, | |
1219 | .lazy = 0, | |
1220 | }; | |
1221 | ||
1222 | #undef TP_ID1 | |
1223 | #undef TP_ID | |
1224 | ||
3afe7aac | 1225 | /* |
c099397a | 1226 | * Stage 10 of the trace events. |
3afe7aac MD |
1227 | * |
1228 | * Register/unregister probes at module load/unload. | |
1229 | */ | |
1230 | ||
3b4aafcb | 1231 | #include <lttng/events-reset.h> /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ |
3afe7aac MD |
1232 | |
1233 | #define TP_ID1(_token, _system) _token##_system | |
1234 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
1235 | #define module_init_eval1(_token, _system) module_init(_token##_system) | |
1236 | #define module_init_eval(_token, _system) module_init_eval1(_token, _system) | |
1237 | #define module_exit_eval1(_token, _system) module_exit(_token##_system) | |
1238 | #define module_exit_eval(_token, _system) module_exit_eval1(_token, _system) | |
1239 | ||
2655f9ad | 1240 | #ifndef TP_MODULE_NOINIT |
3afe7aac MD |
1241 | static int TP_ID(__lttng_events_init__, TRACE_SYSTEM)(void) |
1242 | { | |
263b6c88 | 1243 | wrapper_vmalloc_sync_mappings(); |
a90917c3 | 1244 | return lttng_probe_register(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
1245 | } |
1246 | ||
3afe7aac MD |
1247 | static void TP_ID(__lttng_events_exit__, TRACE_SYSTEM)(void) |
1248 | { | |
a90917c3 | 1249 | lttng_probe_unregister(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
1250 | } |
1251 | ||
2655f9ad MD |
1252 | #ifndef TP_MODULE_NOAUTOLOAD |
1253 | module_init_eval(__lttng_events_init__, TRACE_SYSTEM); | |
3afe7aac | 1254 | module_exit_eval(__lttng_events_exit__, TRACE_SYSTEM); |
259b6cb3 | 1255 | #endif |
3afe7aac | 1256 | |
2655f9ad MD |
1257 | #endif |
1258 | ||
3afe7aac MD |
1259 | #undef module_init_eval |
1260 | #undef module_exit_eval | |
1261 | #undef TP_ID1 | |
1262 | #undef TP_ID | |
177b3692 MD |
1263 | |
1264 | #undef TP_PROTO | |
1265 | #undef TP_ARGS |