Commit | Line | Data |
---|---|---|
17baffe2 MD |
1 | /* |
2 | * lttng-events.h | |
3 | * | |
4 | * Copyright (C) 2009 Steven Rostedt <rostedt@goodmis.org> | |
5 | * Copyright (C) 2010-2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
6 | * | |
7 | * Dual LGPL v2.1/GPL v2 license. | |
8 | */ | |
9 | ||
d0dd2ecb | 10 | #include <linux/debugfs.h> |
c0edae1d MD |
11 | #include "lttng.h" |
12 | #include "lttng-types.h" | |
b13f3ebe | 13 | #include "../wrapper/vmalloc.h" /* for wrapper_vmalloc_sync_all() */ |
f3bc08c5 | 14 | #include "../wrapper/ringbuffer/frontend_types.h" |
e763dbf5 | 15 | #include "../ltt-events.h" |
6db3d13b | 16 | #include "../ltt-tracer-core.h" |
40652b65 | 17 | |
40652b65 | 18 | /* |
6db3d13b | 19 | * Macro declarations used for all stages. |
40652b65 MD |
20 | */ |
21 | ||
22 | /* | |
23 | * DECLARE_EVENT_CLASS can be used to add a generic function | |
24 | * handlers for events. That is, if all events have the same | |
25 | * parameters and just have distinct trace points. | |
26 | * Each tracepoint can be defined with DEFINE_EVENT and that | |
27 | * will map the DECLARE_EVENT_CLASS to the tracepoint. | |
28 | * | |
29 | * TRACE_EVENT is a one to one mapping between tracepoint and template. | |
30 | */ | |
6db3d13b | 31 | |
40652b65 MD |
32 | #undef TRACE_EVENT |
33 | #define TRACE_EVENT(name, proto, args, tstruct, assign, print) \ | |
34 | DECLARE_EVENT_CLASS(name, \ | |
35 | PARAMS(proto), \ | |
36 | PARAMS(args), \ | |
37 | PARAMS(tstruct), \ | |
38 | PARAMS(assign), \ | |
299338c8 MD |
39 | PARAMS(print)) \ |
40 | DEFINE_EVENT(name, name, PARAMS(proto), PARAMS(args)) | |
40652b65 | 41 | |
6db3d13b MD |
42 | #undef DEFINE_EVENT_PRINT |
43 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ | |
44 | DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) | |
45 | ||
46 | /* Callbacks are meaningless to LTTng. */ | |
47 | #undef TRACE_EVENT_FN | |
48 | #define TRACE_EVENT_FN(name, proto, args, tstruct, \ | |
49 | assign, print, reg, unreg) \ | |
50 | TRACE_EVENT(name, PARAMS(proto), PARAMS(args), \ | |
51 | PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \ | |
52 | ||
f62b389e | 53 | /* |
c099397a | 54 | * Stage 1 of the trace events. |
f62b389e MD |
55 | * |
56 | * Create dummy trace calls for each events, verifying that the LTTng module | |
57 | * TRACE_EVENT headers match the kernel arguments. Will be optimized out by the | |
58 | * compiler. | |
59 | */ | |
60 | ||
61 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
62 | ||
63 | #undef TP_PROTO | |
64 | #define TP_PROTO(args...) args | |
65 | ||
66 | #undef TP_ARGS | |
67 | #define TP_ARGS(args...) args | |
68 | ||
69 | #undef DEFINE_EVENT | |
70 | #define DEFINE_EVENT(_template, _name, _proto, _args) \ | |
7eb827f2 | 71 | void trace_##_name(_proto); |
f62b389e MD |
72 | |
73 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
74 | ||
6db3d13b | 75 | /* |
c099397a | 76 | * Stage 2 of the trace events. |
6db3d13b MD |
77 | * |
78 | * Create event field type metadata section. | |
79 | * Each event produce an array of fields. | |
80 | */ | |
81 | ||
82 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
83 | ||
1d12cebd MD |
84 | /* Named field types must be defined in lttng-types.h */ |
85 | ||
d71e6471 MD |
86 | #undef __field_full |
87 | #define __field_full(_type, _item, _order, _base) \ | |
c099397a MD |
88 | { \ |
89 | .name = #_item, \ | |
d71e6471 | 90 | .type = __type_integer(_type, _order, _base, none), \ |
c099397a | 91 | }, |
40652b65 | 92 | |
d71e6471 MD |
93 | #undef __field |
94 | #define __field(_type, _item) \ | |
95 | __field_full(_type, _item, __BYTE_ORDER, 10) | |
96 | ||
40652b65 | 97 | #undef __field_ext |
d71e6471 MD |
98 | #define __field_ext(_type, _item, _filter_type) \ |
99 | __field(_type, _item) | |
40652b65 | 100 | |
c099397a MD |
101 | #undef __field_network |
102 | #define __field_network(_type, _item) \ | |
d71e6471 MD |
103 | __field_full(_type, _item, __BIG_ENDIAN, 10) |
104 | ||
105 | #undef __field_network_hex | |
106 | #define __field_network_hex(_type, _item) \ | |
107 | __field_full(_type, _item, __BIG_ENDIAN, 16) | |
c099397a | 108 | |
d71e6471 MD |
109 | #undef __array_enc_ext |
110 | #define __array_enc_ext(_type, _item, _length, _order, _base, _encoding)\ | |
299338c8 | 111 | { \ |
c099397a MD |
112 | .name = #_item, \ |
113 | .type = \ | |
114 | { \ | |
299338c8 | 115 | .atype = atype_array, \ |
c099397a MD |
116 | .u.array = \ |
117 | { \ | |
118 | .length = _length, \ | |
d71e6471 | 119 | .elem_type = __type_integer(_type, _order, _base, _encoding), \ |
c099397a | 120 | }, \ |
299338c8 MD |
121 | }, \ |
122 | }, | |
40652b65 | 123 | |
64c796d8 MD |
124 | #undef __array |
125 | #define __array(_type, _item, _length) \ | |
d71e6471 | 126 | __array_enc_ext(_type, _item, _length, __BYTE_ORDER, 10, none) |
64c796d8 MD |
127 | |
128 | #undef __array_text | |
129 | #define __array_text(_type, _item, _length) \ | |
d71e6471 | 130 | __array_enc_ext(_type, _item, _length, __BYTE_ORDER, 10, UTF8) |
64c796d8 | 131 | |
d71e6471 MD |
132 | #undef __array_hex |
133 | #define __array_hex(_type, _item, _length) \ | |
134 | __array_enc_ext(_type, _item, _length, __BYTE_ORDER, 16, none) | |
135 | ||
136 | #undef __dynamic_array_enc_ext | |
137 | #define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding) \ | |
299338c8 | 138 | { \ |
c099397a MD |
139 | .name = #_item, \ |
140 | .type = \ | |
141 | { \ | |
299338c8 | 142 | .atype = atype_sequence, \ |
c099397a MD |
143 | .u.sequence = \ |
144 | { \ | |
64c796d8 | 145 | .length_type = __type_integer(u32, __BYTE_ORDER, 10, none), \ |
d71e6471 | 146 | .elem_type = __type_integer(_type, _order, _base, _encoding), \ |
c099397a | 147 | }, \ |
299338c8 MD |
148 | }, \ |
149 | }, | |
40652b65 | 150 | |
64c796d8 MD |
151 | #undef __dynamic_array |
152 | #define __dynamic_array(_type, _item, _length) \ | |
d71e6471 | 153 | __dynamic_array_enc_ext(_type, _item, _length, __BYTE_ORDER, 10, none) |
64c796d8 MD |
154 | |
155 | #undef __dynamic_array_text | |
156 | #define __dynamic_array_text(_type, _item, _length) \ | |
d71e6471 MD |
157 | __dynamic_array_enc_ext(_type, _item, _length, __BYTE_ORDER, 10, UTF8) |
158 | ||
159 | #undef __dynamic_array_hex | |
160 | #define __dynamic_array_hex(_type, _item, _length) \ | |
161 | __dynamic_array_enc_ext(_type, _item, _length, __BYTE_ORDER, 16, none) | |
64c796d8 | 162 | |
40652b65 | 163 | #undef __string |
1d12cebd | 164 | #define __string(_item, _src) \ |
299338c8 | 165 | { \ |
c099397a MD |
166 | .name = #_item, \ |
167 | .type = \ | |
168 | { \ | |
299338c8 | 169 | .atype = atype_string, \ |
c099397a | 170 | .u.basic.string.encoding = lttng_encode_UTF8, \ |
299338c8 MD |
171 | }, \ |
172 | }, | |
1d12cebd | 173 | |
40652b65 | 174 | #undef TP_STRUCT__entry |
1d12cebd MD |
175 | #define TP_STRUCT__entry(args...) args /* Only one used in this phase */ |
176 | ||
40652b65 | 177 | #undef DECLARE_EVENT_CLASS |
0d1d4002 MD |
178 | #define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \ |
179 | static const struct lttng_event_field __event_fields___##_name[] = { \ | |
180 | _tstruct \ | |
299338c8 MD |
181 | }; |
182 | ||
299338c8 MD |
183 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
184 | ||
c099397a MD |
185 | #undef __type_integer |
186 | ||
19c57fbf | 187 | /* |
c099397a | 188 | * Stage 3 of the trace events. |
19c57fbf MD |
189 | * |
190 | * Create probe callback prototypes. | |
191 | */ | |
192 | ||
193 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
194 | ||
195 | #undef TP_PROTO | |
196 | #define TP_PROTO(args...) args | |
197 | ||
198 | #undef DECLARE_EVENT_CLASS | |
199 | #define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \ | |
200 | static void __event_probe__##_name(void *__data, _proto); | |
201 | ||
202 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
203 | ||
299338c8 | 204 | /* |
c099397a | 205 | * Stage 4 of the trace events. |
299338c8 MD |
206 | * |
207 | * Create an array of events. | |
208 | */ | |
209 | ||
299338c8 MD |
210 | /* Named field types must be defined in lttng-types.h */ |
211 | ||
6db3d13b | 212 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ |
299338c8 | 213 | |
1ec65de1 MD |
214 | #ifndef TP_PROBE_CB |
215 | #define TP_PROBE_CB(_template) &__event_probe__##_template | |
216 | #endif | |
217 | ||
d32a57a2 MD |
218 | #undef DEFINE_EVENT |
219 | #define DEFINE_EVENT(_template, _name, _proto, _args) \ | |
220 | { \ | |
221 | .fields = __event_fields___##_template, \ | |
222 | .name = #_name, \ | |
1ec65de1 | 223 | .probe_callback = (void *) TP_PROBE_CB(_template), \ |
d32a57a2 | 224 | .nr_fields = ARRAY_SIZE(__event_fields___##_template), \ |
dc7f600a | 225 | .owner = THIS_MODULE, \ |
6db3d13b | 226 | }, |
40652b65 | 227 | |
d0dd2ecb MD |
228 | #define TP_ID1(_token, _system) _token##_system |
229 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
40652b65 | 230 | |
d0dd2ecb | 231 | static const struct lttng_event_desc TP_ID(__event_desc___, TRACE_SYSTEM)[] = { |
40652b65 | 232 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
299338c8 MD |
233 | }; |
234 | ||
d0dd2ecb MD |
235 | #undef TP_ID1 |
236 | #undef TP_ID | |
237 | ||
85a9ca7f MD |
238 | |
239 | /* | |
c099397a | 240 | * Stage 5 of the trace events. |
85a9ca7f MD |
241 | * |
242 | * Create a toplevel descriptor for the whole probe. | |
243 | */ | |
244 | ||
245 | #define TP_ID1(_token, _system) _token##_system | |
246 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
247 | ||
248 | /* non-const because list head will be modified when registered. */ | |
249 | static struct lttng_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = { | |
250 | .event_desc = TP_ID(__event_desc___, TRACE_SYSTEM), | |
251 | .nr_events = ARRAY_SIZE(TP_ID(__event_desc___, TRACE_SYSTEM)), | |
252 | }; | |
253 | ||
254 | #undef TP_ID1 | |
255 | #undef TP_ID | |
256 | ||
d0dd2ecb | 257 | /* |
c099397a | 258 | * Stage 6 of the trace events. |
40652b65 MD |
259 | * |
260 | * Create static inline function that calculates event size. | |
261 | */ | |
262 | ||
6db3d13b | 263 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ |
40652b65 | 264 | |
6db3d13b MD |
265 | /* Named field types must be defined in lttng-types.h */ |
266 | ||
d71e6471 MD |
267 | #undef __field_full |
268 | #define __field_full(_type, _item, _order, _base) \ | |
d793d5e1 | 269 | __event_len += lib_ring_buffer_align(__event_len, ltt_alignof(_type)); \ |
0d1d4002 | 270 | __event_len += sizeof(_type); |
6db3d13b | 271 | |
d71e6471 MD |
272 | #undef __array_enc_ext |
273 | #define __array_enc_ext(_type, _item, _length, _order, _base, _encoding) \ | |
d793d5e1 | 274 | __event_len += lib_ring_buffer_align(__event_len, ltt_alignof(_type)); \ |
0d1d4002 | 275 | __event_len += sizeof(_type) * (_length); |
6db3d13b | 276 | |
d71e6471 MD |
277 | #undef __dynamic_array_enc_ext |
278 | #define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding)\ | |
d793d5e1 | 279 | __event_len += lib_ring_buffer_align(__event_len, ltt_alignof(u32)); \ |
85a80742 | 280 | __event_len += sizeof(u32); \ |
d793d5e1 | 281 | __event_len += lib_ring_buffer_align(__event_len, ltt_alignof(_type)); \ |
41b59694 MD |
282 | __dynamic_len[__dynamic_len_idx] = (_length); \ |
283 | __event_len += sizeof(_type) * __dynamic_len[__dynamic_len_idx]; \ | |
284 | __dynamic_len_idx++; | |
6db3d13b MD |
285 | |
286 | #undef __string | |
85a80742 | 287 | #define __string(_item, _src) \ |
0d1d4002 MD |
288 | __event_len += __dynamic_len[__dynamic_len_idx++] = strlen(_src) + 1; |
289 | ||
290 | #undef TP_PROTO | |
291 | #define TP_PROTO(args...) args | |
6db3d13b MD |
292 | |
293 | #undef TP_STRUCT__entry | |
0d1d4002 | 294 | #define TP_STRUCT__entry(args...) args |
6db3d13b MD |
295 | |
296 | #undef DECLARE_EVENT_CLASS | |
0d1d4002 MD |
297 | #define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \ |
298 | static inline size_t __event_get_size__##_name(size_t *__dynamic_len, _proto) \ | |
299 | { \ | |
300 | size_t __event_len = 0; \ | |
301 | unsigned int __dynamic_len_idx = 0; \ | |
302 | \ | |
303 | if (0) \ | |
304 | (void) __dynamic_len_idx; /* don't warn if unused */ \ | |
305 | _tstruct \ | |
306 | return __event_len; \ | |
6db3d13b | 307 | } |
40652b65 MD |
308 | |
309 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
310 | ||
311 | /* | |
c099397a | 312 | * Stage 7 of the trace events. |
e763dbf5 MD |
313 | * |
314 | * Create static inline function that calculates event payload alignment. | |
315 | */ | |
316 | ||
317 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
318 | ||
319 | /* Named field types must be defined in lttng-types.h */ | |
320 | ||
d71e6471 MD |
321 | #undef __field_full |
322 | #define __field_full(_type, _item, _order, _base) \ | |
d793d5e1 | 323 | __event_align = max_t(size_t, __event_align, ltt_alignof(_type)); |
e763dbf5 | 324 | |
d71e6471 MD |
325 | #undef __array_enc_ext |
326 | #define __array_enc_ext(_type, _item, _length, _order, _base, _encoding) \ | |
d793d5e1 | 327 | __event_align = max_t(size_t, __event_align, ltt_alignof(_type)); |
e763dbf5 | 328 | |
d71e6471 MD |
329 | #undef __dynamic_array_enc_ext |
330 | #define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding)\ | |
d793d5e1 MD |
331 | __event_align = max_t(size_t, __event_align, ltt_alignof(u32)); \ |
332 | __event_align = max_t(size_t, __event_align, ltt_alignof(_type)); | |
e763dbf5 MD |
333 | |
334 | #undef __string | |
335 | #define __string(_item, _src) | |
336 | ||
337 | #undef TP_PROTO | |
338 | #define TP_PROTO(args...) args | |
339 | ||
340 | #undef TP_STRUCT__entry | |
341 | #define TP_STRUCT__entry(args...) args | |
342 | ||
343 | #undef DECLARE_EVENT_CLASS | |
344 | #define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \ | |
345 | static inline size_t __event_get_align__##_name(_proto) \ | |
346 | { \ | |
347 | size_t __event_align = 1; \ | |
348 | _tstruct \ | |
349 | return __event_align; \ | |
350 | } | |
351 | ||
352 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
353 | ||
354 | ||
e763dbf5 | 355 | /* |
c099397a | 356 | * Stage 8 of the trace events. |
40652b65 | 357 | * |
3c4ffab9 MD |
358 | * Create structure declaration that allows the "assign" macros to access the |
359 | * field types. | |
360 | */ | |
361 | ||
362 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
363 | ||
364 | /* Named field types must be defined in lttng-types.h */ | |
365 | ||
d71e6471 MD |
366 | #undef __field_full |
367 | #define __field_full(_type, _item, _order, _base) _type _item; | |
3c4ffab9 | 368 | |
d71e6471 MD |
369 | #undef __array_enc_ext |
370 | #define __array_enc_ext(_type, _item, _length, _order, _base, _encoding) \ | |
371 | _type _item; | |
64c796d8 | 372 | |
d71e6471 MD |
373 | #undef __dynamic_array_enc_ext |
374 | #define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding)\ | |
375 | _type _item; | |
64c796d8 | 376 | |
3c4ffab9 MD |
377 | #undef __string |
378 | #define __string(_item, _src) char _item; | |
379 | ||
380 | #undef TP_STRUCT__entry | |
381 | #define TP_STRUCT__entry(args...) args | |
382 | ||
383 | #undef DECLARE_EVENT_CLASS | |
384 | #define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \ | |
385 | struct __event_typemap__##_name { \ | |
386 | _tstruct \ | |
387 | }; | |
388 | ||
389 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
390 | ||
391 | ||
392 | /* | |
c099397a | 393 | * Stage 9 of the trace events. |
3c4ffab9 | 394 | * |
40652b65 MD |
395 | * Create the probe function : call even size calculation and write event data |
396 | * into the buffer. | |
e763dbf5 | 397 | * |
67e5e60c MD |
398 | * We use both the field and assignment macros to write the fields in the order |
399 | * defined in the field declaration. The field declarations control the | |
400 | * execution order, jumping to the appropriate assignment block. | |
40652b65 MD |
401 | */ |
402 | ||
e763dbf5 MD |
403 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ |
404 | ||
d71e6471 MD |
405 | #undef __field_full |
406 | #define __field_full(_type, _item, _order, _base) \ | |
e763dbf5 MD |
407 | goto __assign_##_item; \ |
408 | __end_field_##_item: | |
40652b65 | 409 | |
d71e6471 MD |
410 | #undef __array_enc_ext |
411 | #define __array_enc_ext(_type, _item, _length, _order, _base, _encoding)\ | |
e763dbf5 MD |
412 | goto __assign_##_item; \ |
413 | __end_field_##_item: | |
40652b65 | 414 | |
d71e6471 MD |
415 | #undef __dynamic_array_enc_ext |
416 | #define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding)\ | |
e763dbf5 MD |
417 | goto __assign_##_item##_1; \ |
418 | __end_field_##_item##_1: \ | |
e763dbf5 MD |
419 | goto __assign_##_item##_2; \ |
420 | __end_field_##_item##_2: | |
40652b65 | 421 | |
e763dbf5 MD |
422 | #undef __string |
423 | #define __string(_item, _src) \ | |
424 | goto __assign_##_item; \ | |
425 | __end_field_##_item: | |
426 | ||
427 | /* | |
428 | * Macros mapping tp_assign() to "=", tp_memcpy() to memcpy() and tp_strcpy() to | |
429 | * strcpy(). | |
430 | */ | |
431 | #undef tp_assign | |
432 | #define tp_assign(dest, src) \ | |
433 | __assign_##dest: \ | |
434 | { \ | |
3c4ffab9 | 435 | __typeof__(__typemap.dest) __tmp = (src); \ |
aaa4004a MD |
436 | lib_ring_buffer_align_ctx(&__ctx, ltt_alignof(__tmp)); \ |
437 | __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\ | |
e763dbf5 MD |
438 | } \ |
439 | goto __end_field_##dest; | |
440 | ||
441 | #undef tp_memcpy | |
442 | #define tp_memcpy(dest, src, len) \ | |
443 | __assign_##dest: \ | |
d793d5e1 MD |
444 | if (0) \ |
445 | (void) __typemap.dest; \ | |
aaa4004a MD |
446 | lib_ring_buffer_align_ctx(&__ctx, ltt_alignof(__typemap.dest)); \ |
447 | __chan->ops->event_write(&__ctx, src, len); \ | |
e763dbf5 MD |
448 | goto __end_field_##dest; |
449 | ||
450 | #undef tp_memcpy_dyn | |
41b59694 | 451 | #define tp_memcpy_dyn(dest, src) \ |
e763dbf5 MD |
452 | __assign_##dest##_1: \ |
453 | { \ | |
41b59694 | 454 | u32 __tmpl = __dynamic_len[__dynamic_len_idx]; \ |
aaa4004a MD |
455 | lib_ring_buffer_align_ctx(&__ctx, ltt_alignof(u32)); \ |
456 | __chan->ops->event_write(&__ctx, &__tmpl, sizeof(u32)); \ | |
e763dbf5 MD |
457 | } \ |
458 | goto __end_field_##dest##_1; \ | |
459 | __assign_##dest##_2: \ | |
aaa4004a MD |
460 | lib_ring_buffer_align_ctx(&__ctx, ltt_alignof(__typemap.dest)); \ |
461 | __chan->ops->event_write(&__ctx, src, \ | |
41b59694 | 462 | sizeof(__typemap.dest) * __get_dynamic_array_len(dest));\ |
e763dbf5 MD |
463 | goto __end_field_##dest##_2; |
464 | ||
465 | #undef tp_strcpy | |
466 | #define tp_strcpy(dest, src) \ | |
3c4ffab9 | 467 | tp_memcpy(dest, src, __get_dynamic_array_len(dest)) |
40652b65 | 468 | |
e763dbf5 MD |
469 | /* Named field types must be defined in lttng-types.h */ |
470 | ||
471 | #undef __get_str | |
472 | #define __get_str(field) field | |
473 | ||
474 | #undef __get_dynamic_array | |
475 | #define __get_dynamic_array(field) field | |
476 | ||
477 | /* Beware: this get len actually consumes the len value */ | |
478 | #undef __get_dynamic_array_len | |
479 | #define __get_dynamic_array_len(field) __dynamic_len[__dynamic_len_idx++] | |
480 | ||
481 | #undef TP_PROTO | |
482 | #define TP_PROTO(args...) args | |
483 | ||
484 | #undef TP_ARGS | |
485 | #define TP_ARGS(args...) args | |
486 | ||
487 | #undef TP_STRUCT__entry | |
488 | #define TP_STRUCT__entry(args...) args | |
489 | ||
490 | #undef TP_fast_assign | |
491 | #define TP_fast_assign(args...) args | |
492 | ||
493 | #undef DECLARE_EVENT_CLASS | |
494 | #define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \ | |
495 | static void __event_probe__##_name(void *__data, _proto) \ | |
496 | { \ | |
497 | struct ltt_event *__event = __data; \ | |
498 | struct ltt_channel *__chan = __event->chan; \ | |
aaa4004a | 499 | struct lib_ring_buffer_ctx __ctx; \ |
e763dbf5 MD |
500 | size_t __event_len, __event_align; \ |
501 | size_t __dynamic_len_idx = 0; \ | |
502 | size_t __dynamic_len[ARRAY_SIZE(__event_fields___##_name)]; \ | |
3c4ffab9 | 503 | struct __event_typemap__##_name __typemap; \ |
e763dbf5 MD |
504 | int __ret; \ |
505 | \ | |
506 | if (0) \ | |
507 | (void) __dynamic_len_idx; /* don't warn if unused */ \ | |
e64957da MD |
508 | if (unlikely(!ACCESS_ONCE(__chan->session->active))) \ |
509 | return; \ | |
510 | if (unlikely(!ACCESS_ONCE(__chan->enabled))) \ | |
511 | return; \ | |
512 | if (unlikely(!ACCESS_ONCE(__event->enabled))) \ | |
52fc2e1f | 513 | return; \ |
e763dbf5 MD |
514 | __event_len = __event_get_size__##_name(__dynamic_len, _args); \ |
515 | __event_align = __event_get_align__##_name(_args); \ | |
aaa4004a | 516 | lib_ring_buffer_ctx_init(&__ctx, __chan->chan, __event, __event_len, \ |
e763dbf5 | 517 | __event_align, -1); \ |
aaa4004a | 518 | __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ |
e763dbf5 MD |
519 | if (__ret < 0) \ |
520 | return; \ | |
521 | /* Control code (field ordering) */ \ | |
522 | _tstruct \ | |
aaa4004a | 523 | __chan->ops->event_commit(&__ctx); \ |
e763dbf5 MD |
524 | return; \ |
525 | /* Copy code, steered by control code */ \ | |
526 | _assign \ | |
527 | } | |
528 | ||
529 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
530 | ||
3afe7aac | 531 | /* |
c099397a | 532 | * Stage 10 of the trace events. |
3afe7aac MD |
533 | * |
534 | * Register/unregister probes at module load/unload. | |
535 | */ | |
536 | ||
537 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
538 | ||
1ec65de1 MD |
539 | /* Override for syscall tracing */ |
540 | #ifndef TP_REGISTER_OVERRIDE | |
541 | #define TP_REGISTER_OVERRIDE ltt_probe_register | |
542 | #endif | |
543 | ||
544 | #ifndef TP_UNREGISTER_OVERRIDE | |
545 | #define TP_UNREGISTER_OVERRIDE ltt_probe_unregister | |
546 | #endif | |
547 | ||
3afe7aac MD |
548 | #define TP_ID1(_token, _system) _token##_system |
549 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
550 | #define module_init_eval1(_token, _system) module_init(_token##_system) | |
551 | #define module_init_eval(_token, _system) module_init_eval1(_token, _system) | |
552 | #define module_exit_eval1(_token, _system) module_exit(_token##_system) | |
553 | #define module_exit_eval(_token, _system) module_exit_eval1(_token, _system) | |
554 | ||
3afe7aac MD |
555 | static int TP_ID(__lttng_events_init__, TRACE_SYSTEM)(void) |
556 | { | |
6d2a620c | 557 | wrapper_vmalloc_sync_all(); |
1ec65de1 | 558 | return TP_REGISTER_OVERRIDE(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
559 | } |
560 | ||
561 | module_init_eval(__lttng_events_init__, TRACE_SYSTEM); | |
562 | ||
3afe7aac MD |
563 | static void TP_ID(__lttng_events_exit__, TRACE_SYSTEM)(void) |
564 | { | |
1ec65de1 | 565 | TP_UNREGISTER_OVERRIDE(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
566 | } |
567 | ||
568 | module_exit_eval(__lttng_events_exit__, TRACE_SYSTEM); | |
569 | ||
570 | #undef module_init_eval | |
571 | #undef module_exit_eval | |
572 | #undef TP_ID1 | |
573 | #undef TP_ID |