Commit | Line | Data |
---|---|---|
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), \ |
6db3d13b | 198 | }, |
40652b65 | 199 | |
d0dd2ecb MD |
200 | #define TP_ID1(_token, _system) _token##_system |
201 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
40652b65 | 202 | |
d0dd2ecb | 203 | static const struct lttng_event_desc TP_ID(__event_desc___, TRACE_SYSTEM)[] = { |
40652b65 | 204 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
299338c8 MD |
205 | }; |
206 | ||
d0dd2ecb MD |
207 | #undef TP_ID1 |
208 | #undef TP_ID | |
209 | ||
85a9ca7f MD |
210 | |
211 | /* | |
c099397a | 212 | * Stage 5 of the trace events. |
85a9ca7f MD |
213 | * |
214 | * Create a toplevel descriptor for the whole probe. | |
215 | */ | |
216 | ||
217 | #define TP_ID1(_token, _system) _token##_system | |
218 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
219 | ||
220 | /* non-const because list head will be modified when registered. */ | |
221 | static struct lttng_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = { | |
222 | .event_desc = TP_ID(__event_desc___, TRACE_SYSTEM), | |
223 | .nr_events = ARRAY_SIZE(TP_ID(__event_desc___, TRACE_SYSTEM)), | |
224 | }; | |
225 | ||
226 | #undef TP_ID1 | |
227 | #undef TP_ID | |
228 | ||
d0dd2ecb | 229 | /* |
c099397a | 230 | * Stage 6 of the trace events. |
40652b65 MD |
231 | * |
232 | * Create static inline function that calculates event size. | |
233 | */ | |
234 | ||
6db3d13b | 235 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ |
40652b65 | 236 | |
6db3d13b MD |
237 | /* Named field types must be defined in lttng-types.h */ |
238 | ||
239 | #undef __field | |
85a80742 | 240 | #define __field(_type, _item) \ |
d793d5e1 | 241 | __event_len += lib_ring_buffer_align(__event_len, ltt_alignof(_type)); \ |
0d1d4002 | 242 | __event_len += sizeof(_type); |
6db3d13b MD |
243 | |
244 | #undef __field_ext | |
245 | #define __field_ext(_type, _item, _filter_type) __field(_type, _item) | |
246 | ||
247 | #undef __array | |
85a80742 | 248 | #define __array(_type, _item, _length) \ |
d793d5e1 | 249 | __event_len += lib_ring_buffer_align(__event_len, ltt_alignof(_type)); \ |
0d1d4002 | 250 | __event_len += sizeof(_type) * (_length); |
6db3d13b | 251 | |
64c796d8 MD |
252 | #undef __array_text |
253 | #define __array_text(_type, _item, _length) \ | |
254 | __array(_type, _item, _length) | |
255 | ||
6db3d13b | 256 | #undef __dynamic_array |
85a80742 | 257 | #define __dynamic_array(_type, _item, _length) \ |
d793d5e1 | 258 | __event_len += lib_ring_buffer_align(__event_len, ltt_alignof(u32)); \ |
85a80742 | 259 | __event_len += sizeof(u32); \ |
d793d5e1 | 260 | __event_len += lib_ring_buffer_align(__event_len, ltt_alignof(_type)); \ |
0d1d4002 | 261 | __event_len += sizeof(_type) * (_length); |
6db3d13b | 262 | |
64c796d8 MD |
263 | #undef __dynamic_array_text |
264 | #define __dynamic_array_text(_type, _item, _length) \ | |
265 | __dynamic_array(_type, _item, _length) | |
266 | ||
6db3d13b | 267 | #undef __string |
85a80742 | 268 | #define __string(_item, _src) \ |
0d1d4002 MD |
269 | __event_len += __dynamic_len[__dynamic_len_idx++] = strlen(_src) + 1; |
270 | ||
271 | #undef TP_PROTO | |
272 | #define TP_PROTO(args...) args | |
6db3d13b MD |
273 | |
274 | #undef TP_STRUCT__entry | |
0d1d4002 | 275 | #define TP_STRUCT__entry(args...) args |
6db3d13b MD |
276 | |
277 | #undef DECLARE_EVENT_CLASS | |
0d1d4002 MD |
278 | #define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \ |
279 | static inline size_t __event_get_size__##_name(size_t *__dynamic_len, _proto) \ | |
280 | { \ | |
281 | size_t __event_len = 0; \ | |
282 | unsigned int __dynamic_len_idx = 0; \ | |
283 | \ | |
284 | if (0) \ | |
285 | (void) __dynamic_len_idx; /* don't warn if unused */ \ | |
286 | _tstruct \ | |
287 | return __event_len; \ | |
6db3d13b | 288 | } |
40652b65 MD |
289 | |
290 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
291 | ||
292 | /* | |
c099397a | 293 | * Stage 7 of the trace events. |
e763dbf5 MD |
294 | * |
295 | * Create static inline function that calculates event payload alignment. | |
296 | */ | |
297 | ||
298 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
299 | ||
300 | /* Named field types must be defined in lttng-types.h */ | |
301 | ||
302 | #undef __field | |
303 | #define __field(_type, _item) \ | |
d793d5e1 | 304 | __event_align = max_t(size_t, __event_align, ltt_alignof(_type)); |
e763dbf5 MD |
305 | |
306 | #undef __field_ext | |
307 | #define __field_ext(_type, _item, _filter_type) __field(_type, _item) | |
308 | ||
309 | #undef __array | |
310 | #define __array(_type, _item, _length) \ | |
d793d5e1 | 311 | __event_align = max_t(size_t, __event_align, ltt_alignof(_type)); |
e763dbf5 | 312 | |
64c796d8 MD |
313 | #undef __array_text |
314 | #define __array_text(_type, _item, _length) \ | |
315 | __array(_type, _item, _length) | |
316 | ||
e763dbf5 MD |
317 | #undef __dynamic_array |
318 | #define __dynamic_array(_type, _item, _length) \ | |
d793d5e1 MD |
319 | __event_align = max_t(size_t, __event_align, ltt_alignof(u32)); \ |
320 | __event_align = max_t(size_t, __event_align, ltt_alignof(_type)); | |
e763dbf5 | 321 | |
64c796d8 MD |
322 | #undef __dynamic_array_text |
323 | #define __dynamic_array_text(_type, _item, _length) \ | |
324 | __dynamic_array(_type, _item, _length) | |
325 | ||
e763dbf5 MD |
326 | #undef __string |
327 | #define __string(_item, _src) | |
328 | ||
329 | #undef TP_PROTO | |
330 | #define TP_PROTO(args...) args | |
331 | ||
332 | #undef TP_STRUCT__entry | |
333 | #define TP_STRUCT__entry(args...) args | |
334 | ||
335 | #undef DECLARE_EVENT_CLASS | |
336 | #define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \ | |
337 | static inline size_t __event_get_align__##_name(_proto) \ | |
338 | { \ | |
339 | size_t __event_align = 1; \ | |
340 | _tstruct \ | |
341 | return __event_align; \ | |
342 | } | |
343 | ||
344 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
345 | ||
346 | ||
e763dbf5 | 347 | /* |
c099397a | 348 | * Stage 8 of the trace events. |
40652b65 | 349 | * |
3c4ffab9 MD |
350 | * Create structure declaration that allows the "assign" macros to access the |
351 | * field types. | |
352 | */ | |
353 | ||
354 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
355 | ||
356 | /* Named field types must be defined in lttng-types.h */ | |
357 | ||
358 | #undef __field | |
359 | #define __field(_type, _item) _type _item; | |
360 | ||
361 | #undef __field_ext | |
362 | #define __field_ext(_type, _item, _filter_type) __field(_type, _item) | |
363 | ||
364 | #undef __array | |
365 | #define __array(_type, _item, _length) _type _item; | |
366 | ||
64c796d8 MD |
367 | #undef __array_text |
368 | #define __array_text(_type, _item, _length) \ | |
369 | __array(_type, _item, _length) | |
370 | ||
3c4ffab9 MD |
371 | #undef __dynamic_array |
372 | #define __dynamic_array(_type, _item, _length) _type _item; | |
373 | ||
64c796d8 MD |
374 | #undef __dynamic_array_text |
375 | #define __dynamic_array_text(_type, _item, _length) \ | |
376 | __dynamic_array(_type, _item, _length) | |
377 | ||
3c4ffab9 MD |
378 | #undef __string |
379 | #define __string(_item, _src) char _item; | |
380 | ||
381 | #undef TP_STRUCT__entry | |
382 | #define TP_STRUCT__entry(args...) args | |
383 | ||
384 | #undef DECLARE_EVENT_CLASS | |
385 | #define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \ | |
386 | struct __event_typemap__##_name { \ | |
387 | _tstruct \ | |
388 | }; | |
389 | ||
390 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
391 | ||
392 | ||
393 | /* | |
c099397a | 394 | * Stage 9 of the trace events. |
3c4ffab9 | 395 | * |
40652b65 MD |
396 | * Create the probe function : call even size calculation and write event data |
397 | * into the buffer. | |
e763dbf5 | 398 | * |
67e5e60c MD |
399 | * We use both the field and assignment macros to write the fields in the order |
400 | * defined in the field declaration. The field declarations control the | |
401 | * execution order, jumping to the appropriate assignment block. | |
40652b65 MD |
402 | */ |
403 | ||
e763dbf5 MD |
404 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ |
405 | ||
406 | #undef __field | |
407 | #define __field(_type, _item) \ | |
e763dbf5 MD |
408 | goto __assign_##_item; \ |
409 | __end_field_##_item: | |
40652b65 | 410 | |
e763dbf5 MD |
411 | #undef __field_ext |
412 | #define __field_ext(_type, _item, _filter_type) __field(_type, _item) | |
40652b65 | 413 | |
e763dbf5 MD |
414 | #undef __array |
415 | #define __array(_type, _item, _length) \ | |
e763dbf5 MD |
416 | goto __assign_##_item; \ |
417 | __end_field_##_item: | |
40652b65 | 418 | |
64c796d8 MD |
419 | #undef __array_text |
420 | #define __array_text(_type, _item, _length) \ | |
421 | __array(_type, _item, _length) | |
422 | ||
e763dbf5 MD |
423 | #undef __dynamic_array |
424 | #define __dynamic_array(_type, _item, _length) \ | |
e763dbf5 MD |
425 | goto __assign_##_item##_1; \ |
426 | __end_field_##_item##_1: \ | |
e763dbf5 MD |
427 | goto __assign_##_item##_2; \ |
428 | __end_field_##_item##_2: | |
40652b65 | 429 | |
64c796d8 MD |
430 | #undef __dynamic_array_text |
431 | #define __dynamic_array_text(_type, _item, _length) \ | |
432 | __dynamic_array(_type, _item, _length) | |
433 | ||
e763dbf5 MD |
434 | #undef __string |
435 | #define __string(_item, _src) \ | |
436 | goto __assign_##_item; \ | |
437 | __end_field_##_item: | |
438 | ||
439 | /* | |
440 | * Macros mapping tp_assign() to "=", tp_memcpy() to memcpy() and tp_strcpy() to | |
441 | * strcpy(). | |
442 | */ | |
443 | #undef tp_assign | |
444 | #define tp_assign(dest, src) \ | |
445 | __assign_##dest: \ | |
446 | { \ | |
3c4ffab9 | 447 | __typeof__(__typemap.dest) __tmp = (src); \ |
d793d5e1 | 448 | lib_ring_buffer_align_ctx(&ctx, ltt_alignof(__tmp)); \ |
3c4ffab9 | 449 | __chan->ops->event_write(&ctx, &__tmp, sizeof(__tmp)); \ |
e763dbf5 MD |
450 | } \ |
451 | goto __end_field_##dest; | |
452 | ||
453 | #undef tp_memcpy | |
454 | #define tp_memcpy(dest, src, len) \ | |
455 | __assign_##dest: \ | |
d793d5e1 MD |
456 | if (0) \ |
457 | (void) __typemap.dest; \ | |
458 | lib_ring_buffer_align_ctx(&ctx, ltt_alignof(__typemap.dest)); \ | |
e763dbf5 MD |
459 | __chan->ops->event_write(&ctx, src, len); \ |
460 | goto __end_field_##dest; | |
461 | ||
462 | #undef tp_memcpy_dyn | |
463 | #define tp_memcpy_dyn(dest, src, len) \ | |
464 | __assign_##dest##_1: \ | |
465 | { \ | |
3c4ffab9 | 466 | u32 __tmpl = (len); \ |
d793d5e1 | 467 | lib_ring_buffer_align_ctx(&ctx, ltt_alignof(u32)); \ |
e763dbf5 MD |
468 | __chan->ops->event_write(&ctx, &__tmpl, sizeof(u32)); \ |
469 | } \ | |
470 | goto __end_field_##dest##_1; \ | |
471 | __assign_##dest##_2: \ | |
d793d5e1 | 472 | lib_ring_buffer_align_ctx(&ctx, ltt_alignof(__typemap.dest)); \ |
e763dbf5 MD |
473 | __chan->ops->event_write(&ctx, src, len); \ |
474 | goto __end_field_##dest##_2; | |
475 | ||
476 | #undef tp_strcpy | |
477 | #define tp_strcpy(dest, src) \ | |
3c4ffab9 | 478 | tp_memcpy(dest, src, __get_dynamic_array_len(dest)) |
40652b65 | 479 | |
e763dbf5 MD |
480 | /* Named field types must be defined in lttng-types.h */ |
481 | ||
482 | #undef __get_str | |
483 | #define __get_str(field) field | |
484 | ||
485 | #undef __get_dynamic_array | |
486 | #define __get_dynamic_array(field) field | |
487 | ||
488 | /* Beware: this get len actually consumes the len value */ | |
489 | #undef __get_dynamic_array_len | |
490 | #define __get_dynamic_array_len(field) __dynamic_len[__dynamic_len_idx++] | |
491 | ||
492 | #undef TP_PROTO | |
493 | #define TP_PROTO(args...) args | |
494 | ||
495 | #undef TP_ARGS | |
496 | #define TP_ARGS(args...) args | |
497 | ||
498 | #undef TP_STRUCT__entry | |
499 | #define TP_STRUCT__entry(args...) args | |
500 | ||
501 | #undef TP_fast_assign | |
502 | #define TP_fast_assign(args...) args | |
503 | ||
504 | #undef DECLARE_EVENT_CLASS | |
505 | #define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \ | |
506 | static void __event_probe__##_name(void *__data, _proto) \ | |
507 | { \ | |
508 | struct ltt_event *__event = __data; \ | |
509 | struct ltt_channel *__chan = __event->chan; \ | |
510 | struct lib_ring_buffer_ctx ctx; \ | |
511 | size_t __event_len, __event_align; \ | |
512 | size_t __dynamic_len_idx = 0; \ | |
513 | size_t __dynamic_len[ARRAY_SIZE(__event_fields___##_name)]; \ | |
3c4ffab9 | 514 | struct __event_typemap__##_name __typemap; \ |
e763dbf5 MD |
515 | int __ret; \ |
516 | \ | |
517 | if (0) \ | |
518 | (void) __dynamic_len_idx; /* don't warn if unused */ \ | |
52fc2e1f MD |
519 | if (!ACCESS_ONCE(__chan->session->active)) \ |
520 | return; \ | |
e763dbf5 MD |
521 | __event_len = __event_get_size__##_name(__dynamic_len, _args); \ |
522 | __event_align = __event_get_align__##_name(_args); \ | |
523 | lib_ring_buffer_ctx_init(&ctx, __chan->chan, NULL, __event_len, \ | |
524 | __event_align, -1); \ | |
4e1f08f4 | 525 | __ret = __chan->ops->event_reserve(&ctx, __event->id); \ |
e763dbf5 MD |
526 | if (__ret < 0) \ |
527 | return; \ | |
528 | /* Control code (field ordering) */ \ | |
529 | _tstruct \ | |
530 | __chan->ops->event_commit(&ctx); \ | |
531 | return; \ | |
532 | /* Copy code, steered by control code */ \ | |
533 | _assign \ | |
534 | } | |
535 | ||
536 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
537 | ||
3afe7aac | 538 | /* |
c099397a | 539 | * Stage 10 of the trace events. |
3afe7aac MD |
540 | * |
541 | * Register/unregister probes at module load/unload. | |
542 | */ | |
543 | ||
544 | #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */ | |
545 | ||
546 | #define TP_ID1(_token, _system) _token##_system | |
547 | #define TP_ID(_token, _system) TP_ID1(_token, _system) | |
548 | #define module_init_eval1(_token, _system) module_init(_token##_system) | |
549 | #define module_init_eval(_token, _system) module_init_eval1(_token, _system) | |
550 | #define module_exit_eval1(_token, _system) module_exit(_token##_system) | |
551 | #define module_exit_eval(_token, _system) module_exit_eval1(_token, _system) | |
552 | ||
3afe7aac MD |
553 | static int TP_ID(__lttng_events_init__, TRACE_SYSTEM)(void) |
554 | { | |
6d2a620c | 555 | wrapper_vmalloc_sync_all(); |
85a9ca7f | 556 | return ltt_probe_register(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
557 | } |
558 | ||
559 | module_init_eval(__lttng_events_init__, TRACE_SYSTEM); | |
560 | ||
3afe7aac MD |
561 | static void TP_ID(__lttng_events_exit__, TRACE_SYSTEM)(void) |
562 | { | |
85a9ca7f | 563 | ltt_probe_unregister(&TP_ID(__probe_desc___, TRACE_SYSTEM)); |
3afe7aac MD |
564 | } |
565 | ||
566 | module_exit_eval(__lttng_events_exit__, TRACE_SYSTEM); | |
567 | ||
568 | #undef module_init_eval | |
569 | #undef module_exit_eval | |
570 | #undef TP_ID1 | |
571 | #undef TP_ID |