Commit | Line | Data |
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d0dd2ecb | 1 | #include <linux/debugfs.h> |
c0edae1d MD |
2 | #include "lttng.h" |
3 | #include "lttng-types.h" | |
b13f3ebe | 4 | #include "../wrapper/vmalloc.h" /* for wrapper_vmalloc_sync_all() */ |
f3bc08c5 | 5 | #include "../wrapper/ringbuffer/frontend_types.h" |
e763dbf5 | 6 | #include "../ltt-events.h" |
6db3d13b | 7 | #include "../ltt-tracer-core.h" |
40652b65 | 8 | |
40652b65 | 9 | /* |
6db3d13b | 10 | * Macro declarations used for all stages. |
40652b65 MD |
11 | */ |
12 | ||
13 | /* | |
14 | * DECLARE_EVENT_CLASS can be used to add a generic function | |
15 | * handlers for events. That is, if all events have the same | |
16 | * parameters and just have distinct trace points. | |
17 | * Each tracepoint can be defined with DEFINE_EVENT and that | |
18 | * will map the DECLARE_EVENT_CLASS to the tracepoint. | |
19 | * | |
20 | * TRACE_EVENT is a one to one mapping between tracepoint and template. | |
21 | */ | |
6db3d13b | 22 | |
40652b65 MD |
23 | #undef TRACE_EVENT |
24 | #define TRACE_EVENT(name, proto, args, tstruct, assign, print) \ | |
25 | DECLARE_EVENT_CLASS(name, \ | |
26 | PARAMS(proto), \ | |
27 | PARAMS(args), \ | |
28 | PARAMS(tstruct), \ | |
29 | PARAMS(assign), \ | |
299338c8 MD |
30 | PARAMS(print)) \ |
31 | DEFINE_EVENT(name, name, PARAMS(proto), PARAMS(args)) | |
40652b65 | 32 | |
6db3d13b MD |
33 | #undef DEFINE_EVENT_PRINT |
34 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ | |
35 | DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) | |
36 | ||
37 | /* Callbacks are meaningless to LTTng. */ | |
38 | #undef TRACE_EVENT_FN | |
39 | #define TRACE_EVENT_FN(name, proto, args, tstruct, \ | |
40 | assign, print, reg, unreg) \ | |
41 | TRACE_EVENT(name, PARAMS(proto), PARAMS(args), \ | |
42 | PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \ | |
43 | ||
f62b389e | 44 | /* |
c099397a | 45 | * Stage 1 of the trace events. |
f62b389e MD |
46 | * |
47 | * Create dummy trace calls for each events, verifying that the LTTng module | |
48 | * TRACE_EVENT headers match the kernel arguments. Will be optimized out by the | |
49 | * compiler. | |
50 | */ | |
51 | ||
52 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
53 | ||
54 | #undef TP_PROTO | |
55 | #define TP_PROTO(args...) args | |
56 | ||
57 | #undef TP_ARGS | |
58 | #define TP_ARGS(args...) args | |
59 | ||
60 | #undef DEFINE_EVENT | |
61 | #define DEFINE_EVENT(_template, _name, _proto, _args) \ | |
7eb827f2 | 62 | void trace_##_name(_proto); |
f62b389e MD |
63 | |
64 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
65 | ||
6db3d13b | 66 | /* |
c099397a | 67 | * Stage 2 of the trace events. |
6db3d13b MD |
68 | * |
69 | * Create event field type metadata section. | |
70 | * Each event produce an array of fields. | |
71 | */ | |
72 | ||
73 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
74 | ||
1d12cebd MD |
75 | /* Named field types must be defined in lttng-types.h */ |
76 | ||
40652b65 | 77 | #undef __field |
299338c8 | 78 | #define __field(_type, _item) \ |
c099397a MD |
79 | { \ |
80 | .name = #_item, \ | |
64c796d8 | 81 | .type = __type_integer(_type, __BYTE_ORDER, 10, none),\ |
c099397a | 82 | }, |
40652b65 MD |
83 | |
84 | #undef __field_ext | |
6db3d13b | 85 | #define __field_ext(_type, _item, _filter_type) __field(_type, _item) |
40652b65 | 86 | |
c099397a MD |
87 | #undef __field_network |
88 | #define __field_network(_type, _item) \ | |
89 | { \ | |
90 | .name = #_item, \ | |
64c796d8 | 91 | .type = __type_integer(_type, __BIG_ENDIAN, 10, none),\ |
c099397a MD |
92 | }, |
93 | ||
64c796d8 MD |
94 | #undef __array_enc |
95 | #define __array_enc(_type, _item, _length, _encoding) \ | |
299338c8 | 96 | { \ |
c099397a MD |
97 | .name = #_item, \ |
98 | .type = \ | |
99 | { \ | |
299338c8 | 100 | .atype = atype_array, \ |
c099397a MD |
101 | .u.array = \ |
102 | { \ | |
103 | .length = _length, \ | |
64c796d8 | 104 | .elem_type = __type_integer(_type, __BYTE_ORDER, 10, _encoding), \ |
c099397a | 105 | }, \ |
299338c8 MD |
106 | }, \ |
107 | }, | |
40652b65 | 108 | |
64c796d8 MD |
109 | #undef __array |
110 | #define __array(_type, _item, _length) \ | |
111 | __array_enc(_type, _item, _length, none) | |
112 | ||
113 | #undef __array_text | |
114 | #define __array_text(_type, _item, _length) \ | |
115 | __array_enc(_type, _item, _length, UTF8) | |
116 | ||
117 | #undef __dynamic_array_enc | |
118 | #define __dynamic_array_enc(_type, _item, _length, _encoding) \ | |
299338c8 | 119 | { \ |
c099397a MD |
120 | .name = #_item, \ |
121 | .type = \ | |
122 | { \ | |
299338c8 | 123 | .atype = atype_sequence, \ |
c099397a MD |
124 | .u.sequence = \ |
125 | { \ | |
64c796d8 MD |
126 | .length_type = __type_integer(u32, __BYTE_ORDER, 10, none), \ |
127 | .elem_type = __type_integer(_type, __BYTE_ORDER, 10, _encoding), \ | |
c099397a | 128 | }, \ |
299338c8 MD |
129 | }, \ |
130 | }, | |
40652b65 | 131 | |
64c796d8 MD |
132 | #undef __dynamic_array |
133 | #define __dynamic_array(_type, _item, _length) \ | |
134 | __dynamic_array_enc(_type, _item, _length, none) | |
135 | ||
136 | #undef __dynamic_array_text | |
137 | #define __dynamic_array_text(_type, _item, _length) \ | |
138 | __dynamic_array_enc(_type, _item, _length, UTF8) | |
139 | ||
40652b65 | 140 | #undef __string |
1d12cebd | 141 | #define __string(_item, _src) \ |
299338c8 | 142 | { \ |
c099397a MD |
143 | .name = #_item, \ |
144 | .type = \ | |
145 | { \ | |
299338c8 | 146 | .atype = atype_string, \ |
c099397a | 147 | .u.basic.string.encoding = lttng_encode_UTF8, \ |
299338c8 MD |
148 | }, \ |
149 | }, | |
1d12cebd | 150 | |
40652b65 | 151 | #undef TP_STRUCT__entry |
1d12cebd MD |
152 | #define TP_STRUCT__entry(args...) args /* Only one used in this phase */ |
153 | ||
40652b65 | 154 | #undef DECLARE_EVENT_CLASS |
0d1d4002 MD |
155 | #define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \ |
156 | static const struct lttng_event_field __event_fields___##_name[] = { \ | |
157 | _tstruct \ | |
299338c8 MD |
158 | }; |
159 | ||
299338c8 MD |
160 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
161 | ||
c099397a MD |
162 | #undef __type_integer |
163 | ||
19c57fbf | 164 | /* |
c099397a | 165 | * Stage 3 of the trace events. |
19c57fbf MD |
166 | * |
167 | * Create probe callback prototypes. | |
168 | */ | |
169 | ||
170 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
171 | ||
172 | #undef TP_PROTO | |
173 | #define TP_PROTO(args...) args | |
174 | ||
175 | #undef DECLARE_EVENT_CLASS | |
176 | #define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \ | |
177 | static void __event_probe__##_name(void *__data, _proto); | |
178 | ||
179 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
180 | ||
299338c8 | 181 | /* |
c099397a | 182 | * Stage 4 of the trace events. |
299338c8 MD |
183 | * |
184 | * Create an array of events. | |
185 | */ | |
186 | ||
299338c8 MD |
187 | /* Named field types must be defined in lttng-types.h */ |
188 | ||
6db3d13b | 189 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ |
299338c8 | 190 | |
d32a57a2 MD |
191 | #undef DEFINE_EVENT |
192 | #define DEFINE_EVENT(_template, _name, _proto, _args) \ | |
193 | { \ | |
194 | .fields = __event_fields___##_template, \ | |
195 | .name = #_name, \ | |
19c57fbf | 196 | .probe_callback = (void *) &__event_probe__##_template,\ |
d32a57a2 | 197 | .nr_fields = ARRAY_SIZE(__event_fields___##_template), \ |
dc7f600a | 198 | .owner = THIS_MODULE, \ |
6db3d13b | 199 | }, |
40652b65 | 200 | |
d0dd2ecb MD |
201 | #define TP_ID1(_token, _system) _token##_system |
202 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
40652b65 | 203 | |
d0dd2ecb | 204 | static const struct lttng_event_desc TP_ID(__event_desc___, TRACE_SYSTEM)[] = { |
40652b65 | 205 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
299338c8 MD |
206 | }; |
207 | ||
d0dd2ecb MD |
208 | #undef TP_ID1 |
209 | #undef TP_ID | |
210 | ||
85a9ca7f MD |
211 | |
212 | /* | |
c099397a | 213 | * Stage 5 of the trace events. |
85a9ca7f MD |
214 | * |
215 | * Create a toplevel descriptor for the whole probe. | |
216 | */ | |
217 | ||
218 | #define TP_ID1(_token, _system) _token##_system | |
219 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
220 | ||
221 | /* non-const because list head will be modified when registered. */ | |
222 | static struct lttng_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = { | |
223 | .event_desc = TP_ID(__event_desc___, TRACE_SYSTEM), | |
224 | .nr_events = ARRAY_SIZE(TP_ID(__event_desc___, TRACE_SYSTEM)), | |
225 | }; | |
226 | ||
227 | #undef TP_ID1 | |
228 | #undef TP_ID | |
229 | ||
d0dd2ecb | 230 | /* |
c099397a | 231 | * Stage 6 of the trace events. |
40652b65 MD |
232 | * |
233 | * Create static inline function that calculates event size. | |
234 | */ | |
235 | ||
6db3d13b | 236 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ |
40652b65 | 237 | |
6db3d13b MD |
238 | /* Named field types must be defined in lttng-types.h */ |
239 | ||
240 | #undef __field | |
85a80742 | 241 | #define __field(_type, _item) \ |
d793d5e1 | 242 | __event_len += lib_ring_buffer_align(__event_len, ltt_alignof(_type)); \ |
0d1d4002 | 243 | __event_len += sizeof(_type); |
6db3d13b MD |
244 | |
245 | #undef __field_ext | |
246 | #define __field_ext(_type, _item, _filter_type) __field(_type, _item) | |
247 | ||
248 | #undef __array | |
85a80742 | 249 | #define __array(_type, _item, _length) \ |
d793d5e1 | 250 | __event_len += lib_ring_buffer_align(__event_len, ltt_alignof(_type)); \ |
0d1d4002 | 251 | __event_len += sizeof(_type) * (_length); |
6db3d13b | 252 | |
64c796d8 MD |
253 | #undef __array_text |
254 | #define __array_text(_type, _item, _length) \ | |
255 | __array(_type, _item, _length) | |
256 | ||
6db3d13b | 257 | #undef __dynamic_array |
85a80742 | 258 | #define __dynamic_array(_type, _item, _length) \ |
d793d5e1 | 259 | __event_len += lib_ring_buffer_align(__event_len, ltt_alignof(u32)); \ |
85a80742 | 260 | __event_len += sizeof(u32); \ |
d793d5e1 | 261 | __event_len += lib_ring_buffer_align(__event_len, ltt_alignof(_type)); \ |
41b59694 MD |
262 | __dynamic_len[__dynamic_len_idx] = (_length); \ |
263 | __event_len += sizeof(_type) * __dynamic_len[__dynamic_len_idx]; \ | |
264 | __dynamic_len_idx++; | |
6db3d13b | 265 | |
64c796d8 MD |
266 | #undef __dynamic_array_text |
267 | #define __dynamic_array_text(_type, _item, _length) \ | |
268 | __dynamic_array(_type, _item, _length) | |
269 | ||
6db3d13b | 270 | #undef __string |
85a80742 | 271 | #define __string(_item, _src) \ |
0d1d4002 MD |
272 | __event_len += __dynamic_len[__dynamic_len_idx++] = strlen(_src) + 1; |
273 | ||
274 | #undef TP_PROTO | |
275 | #define TP_PROTO(args...) args | |
6db3d13b MD |
276 | |
277 | #undef TP_STRUCT__entry | |
0d1d4002 | 278 | #define TP_STRUCT__entry(args...) args |
6db3d13b MD |
279 | |
280 | #undef DECLARE_EVENT_CLASS | |
0d1d4002 MD |
281 | #define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \ |
282 | static inline size_t __event_get_size__##_name(size_t *__dynamic_len, _proto) \ | |
283 | { \ | |
284 | size_t __event_len = 0; \ | |
285 | unsigned int __dynamic_len_idx = 0; \ | |
286 | \ | |
287 | if (0) \ | |
288 | (void) __dynamic_len_idx; /* don't warn if unused */ \ | |
289 | _tstruct \ | |
290 | return __event_len; \ | |
6db3d13b | 291 | } |
40652b65 MD |
292 | |
293 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
294 | ||
295 | /* | |
c099397a | 296 | * Stage 7 of the trace events. |
e763dbf5 MD |
297 | * |
298 | * Create static inline function that calculates event payload alignment. | |
299 | */ | |
300 | ||
301 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
302 | ||
303 | /* Named field types must be defined in lttng-types.h */ | |
304 | ||
305 | #undef __field | |
306 | #define __field(_type, _item) \ | |
d793d5e1 | 307 | __event_align = max_t(size_t, __event_align, ltt_alignof(_type)); |
e763dbf5 MD |
308 | |
309 | #undef __field_ext | |
310 | #define __field_ext(_type, _item, _filter_type) __field(_type, _item) | |
311 | ||
312 | #undef __array | |
313 | #define __array(_type, _item, _length) \ | |
d793d5e1 | 314 | __event_align = max_t(size_t, __event_align, ltt_alignof(_type)); |
e763dbf5 | 315 | |
64c796d8 MD |
316 | #undef __array_text |
317 | #define __array_text(_type, _item, _length) \ | |
318 | __array(_type, _item, _length) | |
319 | ||
e763dbf5 MD |
320 | #undef __dynamic_array |
321 | #define __dynamic_array(_type, _item, _length) \ | |
d793d5e1 MD |
322 | __event_align = max_t(size_t, __event_align, ltt_alignof(u32)); \ |
323 | __event_align = max_t(size_t, __event_align, ltt_alignof(_type)); | |
e763dbf5 | 324 | |
64c796d8 MD |
325 | #undef __dynamic_array_text |
326 | #define __dynamic_array_text(_type, _item, _length) \ | |
327 | __dynamic_array(_type, _item, _length) | |
328 | ||
e763dbf5 MD |
329 | #undef __string |
330 | #define __string(_item, _src) | |
331 | ||
332 | #undef TP_PROTO | |
333 | #define TP_PROTO(args...) args | |
334 | ||
335 | #undef TP_STRUCT__entry | |
336 | #define TP_STRUCT__entry(args...) args | |
337 | ||
338 | #undef DECLARE_EVENT_CLASS | |
339 | #define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \ | |
340 | static inline size_t __event_get_align__##_name(_proto) \ | |
341 | { \ | |
342 | size_t __event_align = 1; \ | |
343 | _tstruct \ | |
344 | return __event_align; \ | |
345 | } | |
346 | ||
347 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
348 | ||
349 | ||
e763dbf5 | 350 | /* |
c099397a | 351 | * Stage 8 of the trace events. |
40652b65 | 352 | * |
3c4ffab9 MD |
353 | * Create structure declaration that allows the "assign" macros to access the |
354 | * field types. | |
355 | */ | |
356 | ||
357 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
358 | ||
359 | /* Named field types must be defined in lttng-types.h */ | |
360 | ||
361 | #undef __field | |
362 | #define __field(_type, _item) _type _item; | |
363 | ||
364 | #undef __field_ext | |
365 | #define __field_ext(_type, _item, _filter_type) __field(_type, _item) | |
366 | ||
367 | #undef __array | |
368 | #define __array(_type, _item, _length) _type _item; | |
369 | ||
64c796d8 MD |
370 | #undef __array_text |
371 | #define __array_text(_type, _item, _length) \ | |
372 | __array(_type, _item, _length) | |
373 | ||
3c4ffab9 MD |
374 | #undef __dynamic_array |
375 | #define __dynamic_array(_type, _item, _length) _type _item; | |
376 | ||
64c796d8 MD |
377 | #undef __dynamic_array_text |
378 | #define __dynamic_array_text(_type, _item, _length) \ | |
379 | __dynamic_array(_type, _item, _length) | |
380 | ||
3c4ffab9 MD |
381 | #undef __string |
382 | #define __string(_item, _src) char _item; | |
383 | ||
384 | #undef TP_STRUCT__entry | |
385 | #define TP_STRUCT__entry(args...) args | |
386 | ||
387 | #undef DECLARE_EVENT_CLASS | |
388 | #define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \ | |
389 | struct __event_typemap__##_name { \ | |
390 | _tstruct \ | |
391 | }; | |
392 | ||
393 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
394 | ||
395 | ||
396 | /* | |
c099397a | 397 | * Stage 9 of the trace events. |
3c4ffab9 | 398 | * |
40652b65 MD |
399 | * Create the probe function : call even size calculation and write event data |
400 | * into the buffer. | |
e763dbf5 | 401 | * |
67e5e60c MD |
402 | * We use both the field and assignment macros to write the fields in the order |
403 | * defined in the field declaration. The field declarations control the | |
404 | * execution order, jumping to the appropriate assignment block. | |
40652b65 MD |
405 | */ |
406 | ||
e763dbf5 MD |
407 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ |
408 | ||
409 | #undef __field | |
410 | #define __field(_type, _item) \ | |
e763dbf5 MD |
411 | goto __assign_##_item; \ |
412 | __end_field_##_item: | |
40652b65 | 413 | |
e763dbf5 MD |
414 | #undef __field_ext |
415 | #define __field_ext(_type, _item, _filter_type) __field(_type, _item) | |
40652b65 | 416 | |
e763dbf5 MD |
417 | #undef __array |
418 | #define __array(_type, _item, _length) \ | |
e763dbf5 MD |
419 | goto __assign_##_item; \ |
420 | __end_field_##_item: | |
40652b65 | 421 | |
64c796d8 MD |
422 | #undef __array_text |
423 | #define __array_text(_type, _item, _length) \ | |
424 | __array(_type, _item, _length) | |
425 | ||
e763dbf5 MD |
426 | #undef __dynamic_array |
427 | #define __dynamic_array(_type, _item, _length) \ | |
e763dbf5 MD |
428 | goto __assign_##_item##_1; \ |
429 | __end_field_##_item##_1: \ | |
e763dbf5 MD |
430 | goto __assign_##_item##_2; \ |
431 | __end_field_##_item##_2: | |
40652b65 | 432 | |
64c796d8 MD |
433 | #undef __dynamic_array_text |
434 | #define __dynamic_array_text(_type, _item, _length) \ | |
435 | __dynamic_array(_type, _item, _length) | |
436 | ||
e763dbf5 MD |
437 | #undef __string |
438 | #define __string(_item, _src) \ | |
439 | goto __assign_##_item; \ | |
440 | __end_field_##_item: | |
441 | ||
442 | /* | |
443 | * Macros mapping tp_assign() to "=", tp_memcpy() to memcpy() and tp_strcpy() to | |
444 | * strcpy(). | |
445 | */ | |
446 | #undef tp_assign | |
447 | #define tp_assign(dest, src) \ | |
448 | __assign_##dest: \ | |
449 | { \ | |
3c4ffab9 | 450 | __typeof__(__typemap.dest) __tmp = (src); \ |
d793d5e1 | 451 | lib_ring_buffer_align_ctx(&ctx, ltt_alignof(__tmp)); \ |
3c4ffab9 | 452 | __chan->ops->event_write(&ctx, &__tmp, sizeof(__tmp)); \ |
e763dbf5 MD |
453 | } \ |
454 | goto __end_field_##dest; | |
455 | ||
456 | #undef tp_memcpy | |
457 | #define tp_memcpy(dest, src, len) \ | |
458 | __assign_##dest: \ | |
d793d5e1 MD |
459 | if (0) \ |
460 | (void) __typemap.dest; \ | |
461 | lib_ring_buffer_align_ctx(&ctx, ltt_alignof(__typemap.dest)); \ | |
e763dbf5 MD |
462 | __chan->ops->event_write(&ctx, src, len); \ |
463 | goto __end_field_##dest; | |
464 | ||
465 | #undef tp_memcpy_dyn | |
41b59694 | 466 | #define tp_memcpy_dyn(dest, src) \ |
e763dbf5 MD |
467 | __assign_##dest##_1: \ |
468 | { \ | |
41b59694 | 469 | u32 __tmpl = __dynamic_len[__dynamic_len_idx]; \ |
d793d5e1 | 470 | lib_ring_buffer_align_ctx(&ctx, ltt_alignof(u32)); \ |
e763dbf5 MD |
471 | __chan->ops->event_write(&ctx, &__tmpl, sizeof(u32)); \ |
472 | } \ | |
473 | goto __end_field_##dest##_1; \ | |
474 | __assign_##dest##_2: \ | |
d793d5e1 | 475 | lib_ring_buffer_align_ctx(&ctx, ltt_alignof(__typemap.dest)); \ |
41b59694 MD |
476 | __chan->ops->event_write(&ctx, src, \ |
477 | sizeof(__typemap.dest) * __get_dynamic_array_len(dest));\ | |
e763dbf5 MD |
478 | goto __end_field_##dest##_2; |
479 | ||
480 | #undef tp_strcpy | |
481 | #define tp_strcpy(dest, src) \ | |
3c4ffab9 | 482 | tp_memcpy(dest, src, __get_dynamic_array_len(dest)) |
40652b65 | 483 | |
e763dbf5 MD |
484 | /* Named field types must be defined in lttng-types.h */ |
485 | ||
486 | #undef __get_str | |
487 | #define __get_str(field) field | |
488 | ||
489 | #undef __get_dynamic_array | |
490 | #define __get_dynamic_array(field) field | |
491 | ||
492 | /* Beware: this get len actually consumes the len value */ | |
493 | #undef __get_dynamic_array_len | |
494 | #define __get_dynamic_array_len(field) __dynamic_len[__dynamic_len_idx++] | |
495 | ||
496 | #undef TP_PROTO | |
497 | #define TP_PROTO(args...) args | |
498 | ||
499 | #undef TP_ARGS | |
500 | #define TP_ARGS(args...) args | |
501 | ||
502 | #undef TP_STRUCT__entry | |
503 | #define TP_STRUCT__entry(args...) args | |
504 | ||
505 | #undef TP_fast_assign | |
506 | #define TP_fast_assign(args...) args | |
507 | ||
508 | #undef DECLARE_EVENT_CLASS | |
509 | #define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \ | |
510 | static void __event_probe__##_name(void *__data, _proto) \ | |
511 | { \ | |
512 | struct ltt_event *__event = __data; \ | |
513 | struct ltt_channel *__chan = __event->chan; \ | |
514 | struct lib_ring_buffer_ctx ctx; \ | |
515 | size_t __event_len, __event_align; \ | |
516 | size_t __dynamic_len_idx = 0; \ | |
517 | size_t __dynamic_len[ARRAY_SIZE(__event_fields___##_name)]; \ | |
3c4ffab9 | 518 | struct __event_typemap__##_name __typemap; \ |
e763dbf5 MD |
519 | int __ret; \ |
520 | \ | |
521 | if (0) \ | |
522 | (void) __dynamic_len_idx; /* don't warn if unused */ \ | |
52fc2e1f MD |
523 | if (!ACCESS_ONCE(__chan->session->active)) \ |
524 | return; \ | |
e763dbf5 MD |
525 | __event_len = __event_get_size__##_name(__dynamic_len, _args); \ |
526 | __event_align = __event_get_align__##_name(_args); \ | |
f1676205 | 527 | lib_ring_buffer_ctx_init(&ctx, __chan->chan, __event, __event_len, \ |
e763dbf5 | 528 | __event_align, -1); \ |
4e1f08f4 | 529 | __ret = __chan->ops->event_reserve(&ctx, __event->id); \ |
e763dbf5 MD |
530 | if (__ret < 0) \ |
531 | return; \ | |
532 | /* Control code (field ordering) */ \ | |
533 | _tstruct \ | |
534 | __chan->ops->event_commit(&ctx); \ | |
535 | return; \ | |
536 | /* Copy code, steered by control code */ \ | |
537 | _assign \ | |
538 | } | |
539 | ||
540 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
541 | ||
3afe7aac | 542 | /* |
c099397a | 543 | * Stage 10 of the trace events. |
3afe7aac MD |
544 | * |
545 | * Register/unregister probes at module load/unload. | |
546 | */ | |
547 | ||
548 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
549 | ||
550 | #define TP_ID1(_token, _system) _token##_system | |
551 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
552 | #define module_init_eval1(_token, _system) module_init(_token##_system) | |
553 | #define module_init_eval(_token, _system) module_init_eval1(_token, _system) | |
554 | #define module_exit_eval1(_token, _system) module_exit(_token##_system) | |
555 | #define module_exit_eval(_token, _system) module_exit_eval1(_token, _system) | |
556 | ||
3afe7aac MD |
557 | static int TP_ID(__lttng_events_init__, TRACE_SYSTEM)(void) |
558 | { | |
6d2a620c | 559 | wrapper_vmalloc_sync_all(); |
85a9ca7f | 560 | return ltt_probe_register(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
561 | } |
562 | ||
563 | module_init_eval(__lttng_events_init__, TRACE_SYSTEM); | |
564 | ||
3afe7aac MD |
565 | static void TP_ID(__lttng_events_exit__, TRACE_SYSTEM)(void) |
566 | { | |
85a9ca7f | 567 | ltt_probe_unregister(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
568 | } |
569 | ||
570 | module_exit_eval(__lttng_events_exit__, TRACE_SYSTEM); | |
571 | ||
572 | #undef module_init_eval | |
573 | #undef module_exit_eval | |
574 | #undef TP_ID1 | |
575 | #undef TP_ID |