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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
10#include <linux/debugfs.h>
11#include "lttng.h"
12#include "lttng-types.h"
13#include "../wrapper/vmalloc.h" /* for wrapper_vmalloc_sync_all() */
14#include "../wrapper/ringbuffer/frontend_types.h"
15#include "../ltt-events.h"
16#include "../ltt-tracer-core.h"
17
18/*
19 * Macro declarations used for all stages.
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 */
31
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), \
39 PARAMS(print)) \
40 DEFINE_EVENT(name, name, PARAMS(proto), PARAMS(args))
41
42#undef TRACE_EVENT_NOARGS
43#define TRACE_EVENT_NOARGS(name, tstruct, assign, print) \
44 DECLARE_EVENT_CLASS_NOARGS(name, \
45 PARAMS(tstruct), \
46 PARAMS(assign), \
47 PARAMS(print)) \
48 DEFINE_EVENT_NOARGS(name, name)
49
50
51#undef DEFINE_EVENT_PRINT
52#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
53 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
54
55/* Callbacks are meaningless to LTTng. */
56#undef TRACE_EVENT_FN
57#define TRACE_EVENT_FN(name, proto, args, tstruct, \
58 assign, print, reg, unreg) \
59 TRACE_EVENT(name, PARAMS(proto), PARAMS(args), \
60 PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \
61
62/*
63 * Stage 1 of the trace events.
64 *
65 * Create dummy trace calls for each events, verifying that the LTTng module
66 * TRACE_EVENT headers match the kernel arguments. Will be optimized out by the
67 * compiler.
68 */
69
70#include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
71
72#undef TP_PROTO
73#define TP_PROTO(args...) args
74
75#undef TP_ARGS
76#define TP_ARGS(args...) args
77
78#undef DEFINE_EVENT
79#define DEFINE_EVENT(_template, _name, _proto, _args) \
80void trace_##_name(_proto);
81
82#undef DEFINE_EVENT_NOARGS
83#define DEFINE_EVENT_NOARGS(_template, _name) \
84void trace_##_name(void *__data);
85
86#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
87
88/*
89 * Stage 2 of the trace events.
90 *
91 * Create event field type metadata section.
92 * Each event produce an array of fields.
93 */
94
95#include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
96
97/* Named field types must be defined in lttng-types.h */
98
99#undef __field_full
100#define __field_full(_type, _item, _order, _base) \
101 { \
102 .name = #_item, \
103 .type = __type_integer(_type, _order, _base, none), \
104 },
105
106#undef __field
107#define __field(_type, _item) \
108 __field_full(_type, _item, __BYTE_ORDER, 10)
109
110#undef __field_ext
111#define __field_ext(_type, _item, _filter_type) \
112 __field(_type, _item)
113
114#undef __field_hex
115#define __field_hex(_type, _item) \
116 __field_full(_type, _item, __BYTE_ORDER, 16)
117
118#undef __field_network
119#define __field_network(_type, _item) \
120 __field_full(_type, _item, __BIG_ENDIAN, 10)
121
122#undef __field_network_hex
123#define __field_network_hex(_type, _item) \
124 __field_full(_type, _item, __BIG_ENDIAN, 16)
125
126#undef __array_enc_ext
127#define __array_enc_ext(_type, _item, _length, _order, _base, _encoding)\
128 { \
129 .name = #_item, \
130 .type = \
131 { \
132 .atype = atype_array, \
133 .u.array = \
134 { \
135 .length = _length, \
136 .elem_type = __type_integer(_type, _order, _base, _encoding), \
137 }, \
138 }, \
139 },
140
141#undef __array
142#define __array(_type, _item, _length) \
143 __array_enc_ext(_type, _item, _length, __BYTE_ORDER, 10, none)
144
145#undef __array_text
146#define __array_text(_type, _item, _length) \
147 __array_enc_ext(_type, _item, _length, __BYTE_ORDER, 10, UTF8)
148
149#undef __array_hex
150#define __array_hex(_type, _item, _length) \
151 __array_enc_ext(_type, _item, _length, __BYTE_ORDER, 16, none)
152
153#undef __dynamic_array_enc_ext
154#define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding) \
155 { \
156 .name = #_item, \
157 .type = \
158 { \
159 .atype = atype_sequence, \
160 .u.sequence = \
161 { \
162 .length_type = __type_integer(u32, __BYTE_ORDER, 10, none), \
163 .elem_type = __type_integer(_type, _order, _base, _encoding), \
164 }, \
165 }, \
166 },
167
168#undef __dynamic_array
169#define __dynamic_array(_type, _item, _length) \
170 __dynamic_array_enc_ext(_type, _item, _length, __BYTE_ORDER, 10, none)
171
172#undef __dynamic_array_text
173#define __dynamic_array_text(_type, _item, _length) \
174 __dynamic_array_enc_ext(_type, _item, _length, __BYTE_ORDER, 10, UTF8)
175
176#undef __dynamic_array_hex
177#define __dynamic_array_hex(_type, _item, _length) \
178 __dynamic_array_enc_ext(_type, _item, _length, __BYTE_ORDER, 16, none)
179
180#undef __string
181#define __string(_item, _src) \
182 { \
183 .name = #_item, \
184 .type = \
185 { \
186 .atype = atype_string, \
187 .u.basic.string.encoding = lttng_encode_UTF8, \
188 }, \
189 },
190
191#undef __string_from_user
192#define __string_from_user(_item, _src) \
193 __string(_item, _src)
194
195#undef TP_STRUCT__entry
196#define TP_STRUCT__entry(args...) args /* Only one used in this phase */
197
198#undef DECLARE_EVENT_CLASS_NOARGS
199#define DECLARE_EVENT_CLASS_NOARGS(_name, _tstruct, _assign, _print) \
200 static const struct lttng_event_field __event_fields___##_name[] = { \
201 _tstruct \
202 };
203
204#undef DECLARE_EVENT_CLASS
205#define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \
206 DECLARE_EVENT_CLASS_NOARGS(_name, PARAMS(_tstruct), PARAMS(_assign), \
207 PARAMS(_print))
208
209#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
210
211/*
212 * Stage 3 of the trace events.
213 *
214 * Create probe callback prototypes.
215 */
216
217#include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
218
219#undef TP_PROTO
220#define TP_PROTO(args...) args
221
222#undef DECLARE_EVENT_CLASS
223#define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \
224static void __event_probe__##_name(void *__data, _proto);
225
226#undef DECLARE_EVENT_CLASS_NOARGS
227#define DECLARE_EVENT_CLASS_NOARGS(_name, _tstruct, _assign, _print) \
228static void __event_probe__##_name(void *__data);
229
230#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
231
232/*
233 * Stage 3.9 of the trace events.
234 *
235 * Create event descriptions.
236 */
237
238/* Named field types must be defined in lttng-types.h */
239
240#include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
241
242#ifndef TP_PROBE_CB
243#define TP_PROBE_CB(_template) &__event_probe__##_template
244#endif
245
246#undef DEFINE_EVENT_NOARGS
247#define DEFINE_EVENT_NOARGS(_template, _name) \
248static const struct lttng_event_desc __event_desc___##_name = { \
249 .fields = __event_fields___##_template, \
250 .name = #_name, \
251 .probe_callback = (void *) TP_PROBE_CB(_template), \
252 .nr_fields = ARRAY_SIZE(__event_fields___##_template), \
253 .owner = THIS_MODULE, \
254};
255
256#undef DEFINE_EVENT
257#define DEFINE_EVENT(_template, _name, _proto, _args) \
258 DEFINE_EVENT_NOARGS(_template, _name)
259
260#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
261
262
263/*
264 * Stage 4 of the trace events.
265 *
266 * Create an array of event description pointers.
267 */
268
269/* Named field types must be defined in lttng-types.h */
270
271#include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
272
273#undef DEFINE_EVENT_NOARGS
274#define DEFINE_EVENT_NOARGS(_template, _name) \
275 &__event_desc___##_name,
276
277#undef DEFINE_EVENT
278#define DEFINE_EVENT(_template, _name, _proto, _args) \
279 DEFINE_EVENT_NOARGS(_template, _name)
280
281#define TP_ID1(_token, _system) _token##_system
282#define TP_ID(_token, _system) TP_ID1(_token, _system)
283
284static const struct lttng_event_desc *TP_ID(__event_desc___, TRACE_SYSTEM)[] = {
285#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
286};
287
288#undef TP_ID1
289#undef TP_ID
290
291
292/*
293 * Stage 5 of the trace events.
294 *
295 * Create a toplevel descriptor for the whole probe.
296 */
297
298#define TP_ID1(_token, _system) _token##_system
299#define TP_ID(_token, _system) TP_ID1(_token, _system)
300
301/* non-const because list head will be modified when registered. */
302static __used struct lttng_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = {
303 .event_desc = TP_ID(__event_desc___, TRACE_SYSTEM),
304 .nr_events = ARRAY_SIZE(TP_ID(__event_desc___, TRACE_SYSTEM)),
305};
306
307#undef TP_ID1
308#undef TP_ID
309
310/*
311 * Stage 6 of the trace events.
312 *
313 * Create static inline function that calculates event size.
314 */
315
316#include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
317
318/* Named field types must be defined in lttng-types.h */
319
320#undef __field_full
321#define __field_full(_type, _item, _order, _base) \
322 __event_len += lib_ring_buffer_align(__event_len, ltt_alignof(_type)); \
323 __event_len += sizeof(_type);
324
325#undef __array_enc_ext
326#define __array_enc_ext(_type, _item, _length, _order, _base, _encoding) \
327 __event_len += lib_ring_buffer_align(__event_len, ltt_alignof(_type)); \
328 __event_len += sizeof(_type) * (_length);
329
330#undef __dynamic_array_enc_ext
331#define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding)\
332 __event_len += lib_ring_buffer_align(__event_len, ltt_alignof(u32)); \
333 __event_len += sizeof(u32); \
334 __event_len += lib_ring_buffer_align(__event_len, ltt_alignof(_type)); \
335 __dynamic_len[__dynamic_len_idx] = (_length); \
336 __event_len += sizeof(_type) * __dynamic_len[__dynamic_len_idx]; \
337 __dynamic_len_idx++;
338
339#undef __string
340#define __string(_item, _src) \
341 __event_len += __dynamic_len[__dynamic_len_idx++] = strlen(_src) + 1;
342
343/*
344 * strlen_user includes \0. If returns 0, it faulted, so we set size to
345 * 1 (\0 only).
346 */
347#undef __string_from_user
348#define __string_from_user(_item, _src) \
349 __event_len += __dynamic_len[__dynamic_len_idx++] = \
350 max_t(size_t, strlen_user(_src), 1);
351
352#undef TP_PROTO
353#define TP_PROTO(args...) args
354
355#undef TP_STRUCT__entry
356#define TP_STRUCT__entry(args...) args
357
358#undef DECLARE_EVENT_CLASS
359#define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \
360static inline size_t __event_get_size__##_name(size_t *__dynamic_len, _proto) \
361{ \
362 size_t __event_len = 0; \
363 unsigned int __dynamic_len_idx = 0; \
364 \
365 if (0) \
366 (void) __dynamic_len_idx; /* don't warn if unused */ \
367 _tstruct \
368 return __event_len; \
369}
370
371#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
372
373/*
374 * Stage 7 of the trace events.
375 *
376 * Create static inline function that calculates event payload alignment.
377 */
378
379#include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
380
381/* Named field types must be defined in lttng-types.h */
382
383#undef __field_full
384#define __field_full(_type, _item, _order, _base) \
385 __event_align = max_t(size_t, __event_align, ltt_alignof(_type));
386
387#undef __array_enc_ext
388#define __array_enc_ext(_type, _item, _length, _order, _base, _encoding) \
389 __event_align = max_t(size_t, __event_align, ltt_alignof(_type));
390
391#undef __dynamic_array_enc_ext
392#define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding)\
393 __event_align = max_t(size_t, __event_align, ltt_alignof(u32)); \
394 __event_align = max_t(size_t, __event_align, ltt_alignof(_type));
395
396#undef __string
397#define __string(_item, _src)
398
399#undef __string_from_user
400#define __string_from_user(_item, _src)
401
402#undef TP_PROTO
403#define TP_PROTO(args...) args
404
405#undef TP_STRUCT__entry
406#define TP_STRUCT__entry(args...) args
407
408#undef DECLARE_EVENT_CLASS
409#define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \
410static inline size_t __event_get_align__##_name(_proto) \
411{ \
412 size_t __event_align = 1; \
413 _tstruct \
414 return __event_align; \
415}
416
417#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
418
419
420/*
421 * Stage 8 of the trace events.
422 *
423 * Create structure declaration that allows the "assign" macros to access the
424 * field types.
425 */
426
427#include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
428
429/* Named field types must be defined in lttng-types.h */
430
431#undef __field_full
432#define __field_full(_type, _item, _order, _base) _type _item;
433
434#undef __array_enc_ext
435#define __array_enc_ext(_type, _item, _length, _order, _base, _encoding) \
436 _type _item;
437
438#undef __dynamic_array_enc_ext
439#define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding)\
440 _type _item;
441
442#undef __string
443#define __string(_item, _src) char _item;
444
445#undef __string_from_user
446#define __string_from_user(_item, _src) \
447 __string(_item, _src)
448
449#undef TP_STRUCT__entry
450#define TP_STRUCT__entry(args...) args
451
452#undef DECLARE_EVENT_CLASS
453#define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \
454struct __event_typemap__##_name { \
455 _tstruct \
456};
457
458#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
459
460
461/*
462 * Stage 9 of the trace events.
463 *
464 * Create the probe function : call even size calculation and write event data
465 * into the buffer.
466 *
467 * We use both the field and assignment macros to write the fields in the order
468 * defined in the field declaration. The field declarations control the
469 * execution order, jumping to the appropriate assignment block.
470 */
471
472#include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
473
474#undef __field_full
475#define __field_full(_type, _item, _order, _base) \
476 goto __assign_##_item; \
477__end_field_##_item:
478
479#undef __array_enc_ext
480#define __array_enc_ext(_type, _item, _length, _order, _base, _encoding)\
481 goto __assign_##_item; \
482__end_field_##_item:
483
484#undef __dynamic_array_enc_ext
485#define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding)\
486 goto __assign_##_item##_1; \
487__end_field_##_item##_1: \
488 goto __assign_##_item##_2; \
489__end_field_##_item##_2:
490
491#undef __string
492#define __string(_item, _src) \
493 goto __assign_##_item; \
494__end_field_##_item:
495
496#undef __string_from_user
497#define __string_from_user(_item, _src) \
498 __string(_item, _src)
499
500/*
501 * Macros mapping tp_assign() to "=", tp_memcpy() to memcpy() and tp_strcpy() to
502 * strcpy().
503 */
504#undef tp_assign
505#define tp_assign(dest, src) \
506__assign_##dest: \
507 { \
508 __typeof__(__typemap.dest) __tmp = (src); \
509 lib_ring_buffer_align_ctx(&__ctx, ltt_alignof(__tmp)); \
510 __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\
511 } \
512 goto __end_field_##dest;
513
514#undef tp_memcpy
515#define tp_memcpy(dest, src, len) \
516__assign_##dest: \
517 if (0) \
518 (void) __typemap.dest; \
519 lib_ring_buffer_align_ctx(&__ctx, ltt_alignof(__typemap.dest)); \
520 __chan->ops->event_write(&__ctx, src, len); \
521 goto __end_field_##dest;
522
523#undef tp_memcpy_dyn
524#define tp_memcpy_dyn(dest, src) \
525__assign_##dest##_1: \
526 { \
527 u32 __tmpl = __dynamic_len[__dynamic_len_idx]; \
528 lib_ring_buffer_align_ctx(&__ctx, ltt_alignof(u32)); \
529 __chan->ops->event_write(&__ctx, &__tmpl, sizeof(u32)); \
530 } \
531 goto __end_field_##dest##_1; \
532__assign_##dest##_2: \
533 lib_ring_buffer_align_ctx(&__ctx, ltt_alignof(__typemap.dest)); \
534 __chan->ops->event_write(&__ctx, src, \
535 sizeof(__typemap.dest) * __get_dynamic_array_len(dest));\
536 goto __end_field_##dest##_2;
537
538#undef tp_memcpy_from_user
539#define tp_memcpy_from_user(dest, src, len) \
540 __assign_##dest: \
541 if (0) \
542 (void) __typemap.dest; \
543 lib_ring_buffer_align_ctx(&__ctx, ltt_alignof(__typemap.dest)); \
544 __chan->ops->event_write_from_user(&__ctx, src, len); \
545 goto __end_field_##dest;
546
547/*
548 * The string length including the final \0.
549 */
550#undef tp_copy_string_from_user
551#define tp_copy_string_from_user(dest, src) \
552 __assign_##dest: \
553 { \
554 size_t __ustrlen; \
555 \
556 if (0) \
557 (void) __typemap.dest; \
558 lib_ring_buffer_align_ctx(&__ctx, ltt_alignof(__typemap.dest));\
559 __ustrlen = __get_dynamic_array_len(dest); \
560 if (likely(__ustrlen > 1)) { \
561 __chan->ops->event_write_from_user(&__ctx, src, \
562 __ustrlen - 1); \
563 } \
564 __chan->ops->event_memset(&__ctx, 0, 1); \
565 } \
566 goto __end_field_##dest;
567#undef tp_strcpy
568#define tp_strcpy(dest, src) \
569 tp_memcpy(dest, src, __get_dynamic_array_len(dest))
570
571/* Named field types must be defined in lttng-types.h */
572
573#undef __get_str
574#define __get_str(field) field
575
576#undef __get_dynamic_array
577#define __get_dynamic_array(field) field
578
579/* Beware: this get len actually consumes the len value */
580#undef __get_dynamic_array_len
581#define __get_dynamic_array_len(field) __dynamic_len[__dynamic_len_idx++]
582
583#undef TP_PROTO
584#define TP_PROTO(args...) args
585
586#undef TP_ARGS
587#define TP_ARGS(args...) args
588
589#undef TP_STRUCT__entry
590#define TP_STRUCT__entry(args...) args
591
592#undef TP_fast_assign
593#define TP_fast_assign(args...) args
594
595#undef DECLARE_EVENT_CLASS
596#define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \
597static void __event_probe__##_name(void *__data, _proto) \
598{ \
599 struct ltt_event *__event = __data; \
600 struct ltt_channel *__chan = __event->chan; \
601 struct lib_ring_buffer_ctx __ctx; \
602 size_t __event_len, __event_align; \
603 size_t __dynamic_len_idx = 0; \
604 size_t __dynamic_len[ARRAY_SIZE(__event_fields___##_name)]; \
605 struct __event_typemap__##_name __typemap; \
606 int __ret; \
607 \
608 if (0) \
609 (void) __dynamic_len_idx; /* don't warn if unused */ \
610 if (unlikely(!ACCESS_ONCE(__chan->session->active))) \
611 return; \
612 if (unlikely(!ACCESS_ONCE(__chan->enabled))) \
613 return; \
614 if (unlikely(!ACCESS_ONCE(__event->enabled))) \
615 return; \
616 __event_len = __event_get_size__##_name(__dynamic_len, _args); \
617 __event_align = __event_get_align__##_name(_args); \
618 lib_ring_buffer_ctx_init(&__ctx, __chan->chan, __event, __event_len, \
619 __event_align, -1); \
620 __ret = __chan->ops->event_reserve(&__ctx, __event->id); \
621 if (__ret < 0) \
622 return; \
623 /* Control code (field ordering) */ \
624 _tstruct \
625 __chan->ops->event_commit(&__ctx); \
626 return; \
627 /* Copy code, steered by control code */ \
628 _assign \
629}
630
631#undef DECLARE_EVENT_CLASS_NOARGS
632#define DECLARE_EVENT_CLASS_NOARGS(_name, _tstruct, _assign, _print) \
633static void __event_probe__##_name(void *__data) \
634{ \
635 struct ltt_event *__event = __data; \
636 struct ltt_channel *__chan = __event->chan; \
637 struct lib_ring_buffer_ctx __ctx; \
638 size_t __event_len, __event_align; \
639 int __ret; \
640 \
641 if (unlikely(!ACCESS_ONCE(__chan->session->active))) \
642 return; \
643 if (unlikely(!ACCESS_ONCE(__chan->enabled))) \
644 return; \
645 if (unlikely(!ACCESS_ONCE(__event->enabled))) \
646 return; \
647 __event_len = 0; \
648 __event_align = 1; \
649 lib_ring_buffer_ctx_init(&__ctx, __chan->chan, __event, __event_len, \
650 __event_align, -1); \
651 __ret = __chan->ops->event_reserve(&__ctx, __event->id); \
652 if (__ret < 0) \
653 return; \
654 /* Control code (field ordering) */ \
655 _tstruct \
656 __chan->ops->event_commit(&__ctx); \
657 return; \
658 /* Copy code, steered by control code */ \
659 _assign \
660}
661
662#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
663
664/*
665 * Stage 10 of the trace events.
666 *
667 * Register/unregister probes at module load/unload.
668 */
669
670#include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
671
672#define TP_ID1(_token, _system) _token##_system
673#define TP_ID(_token, _system) TP_ID1(_token, _system)
674#define module_init_eval1(_token, _system) module_init(_token##_system)
675#define module_init_eval(_token, _system) module_init_eval1(_token, _system)
676#define module_exit_eval1(_token, _system) module_exit(_token##_system)
677#define module_exit_eval(_token, _system) module_exit_eval1(_token, _system)
678
679#ifndef TP_MODULE_OVERRIDE
680static int TP_ID(__lttng_events_init__, TRACE_SYSTEM)(void)
681{
682 wrapper_vmalloc_sync_all();
683 return ltt_probe_register(&TP_ID(__probe_desc___, TRACE_SYSTEM));
684}
685
686module_init_eval(__lttng_events_init__, TRACE_SYSTEM);
687
688static void TP_ID(__lttng_events_exit__, TRACE_SYSTEM)(void)
689{
690 ltt_probe_unregister(&TP_ID(__probe_desc___, TRACE_SYSTEM));
691}
692
693module_exit_eval(__lttng_events_exit__, TRACE_SYSTEM);
694#endif
695
696#undef module_init_eval
697#undef module_exit_eval
698#undef TP_ID1
699#undef TP_ID
700
701#undef TP_PROTO
702#undef TP_ARGS
703#undef TRACE_EVENT_FLAGS
LTTng 2.0/0.x modules
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