8a3a886b79dfac7ea561ad4b4f14cc04c42f124b
4 * Copyright (C) 2009 Steven Rostedt <rostedt@goodmis.org>
5 * Copyright (C) 2009-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; only
10 * version 2.1 of the License.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 #include <linux/uaccess.h>
22 #include <linux/debugfs.h>
24 #include "lttng-types.h"
25 #include "lttng-probe-user.h"
26 #include "../wrapper/vmalloc.h" /* for wrapper_vmalloc_sync_all() */
27 #include "../wrapper/ringbuffer/frontend_types.h"
28 #include "../lttng-events.h"
29 #include "../lttng-tracer-core.h"
32 * Macro declarations used for all stages.
36 * LTTng name mapping macros. LTTng remaps some of the kernel events to
37 * enforce name-spacing.
39 #undef TRACE_EVENT_MAP
40 #define TRACE_EVENT_MAP(name, map, proto, args, tstruct, assign, print) \
41 DECLARE_EVENT_CLASS(map, \
47 DEFINE_EVENT_MAP(map, name, map, PARAMS(proto), PARAMS(args))
49 #undef TRACE_EVENT_MAP_NOARGS
50 #define TRACE_EVENT_MAP_NOARGS(name, map, tstruct, assign, print) \
51 DECLARE_EVENT_CLASS_NOARGS(map, \
55 DEFINE_EVENT_MAP_NOARGS(map, name, map)
57 #undef DEFINE_EVENT_PRINT_MAP
58 #define DEFINE_EVENT_PRINT_MAP(template, name, map, proto, args, print) \
59 DEFINE_EVENT_MAP(template, name, map, PARAMS(proto), PARAMS(args))
61 /* Callbacks are meaningless to LTTng. */
62 #undef TRACE_EVENT_FN_MAP
63 #define TRACE_EVENT_FN_MAP(name, map, proto, args, tstruct, \
64 assign, print, reg, unreg) \
65 TRACE_EVENT_MAP(name, map, PARAMS(proto), PARAMS(args), \
66 PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \
68 #undef TRACE_EVENT_CONDITION_MAP
69 #define TRACE_EVENT_CONDITION_MAP(name, map, proto, args, cond, tstruct, assign, print) \
70 TRACE_EVENT_MAP(name, map, \
78 * DECLARE_EVENT_CLASS can be used to add a generic function
79 * handlers for events. That is, if all events have the same
80 * parameters and just have distinct trace points.
81 * Each tracepoint can be defined with DEFINE_EVENT and that
82 * will map the DECLARE_EVENT_CLASS to the tracepoint.
84 * TRACE_EVENT is a one to one mapping between tracepoint and template.
88 #define TRACE_EVENT(name, proto, args, tstruct, assign, print) \
89 TRACE_EVENT_MAP(name, name, \
96 #undef TRACE_EVENT_NOARGS
97 #define TRACE_EVENT_NOARGS(name, tstruct, assign, print) \
98 TRACE_EVENT_MAP_NOARGS(name, name, \
103 #undef DEFINE_EVENT_PRINT
104 #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
105 DEFINE_EVENT_PRINT_MAP(template, name, name, \
106 PARAMS(proto), PARAMS(args), PARAMS(print_))
108 #undef TRACE_EVENT_FN
109 #define TRACE_EVENT_FN(name, proto, args, tstruct, \
110 assign, print, reg, unreg) \
111 TRACE_EVENT_FN_MAP(name, name, PARAMS(proto), PARAMS(args), \
112 PARAMS(tstruct), PARAMS(assign), PARAMS(print), \
113 PARAMS(reg), PARAMS(unreg)) \
116 #define DEFINE_EVENT(template, name, proto, args) \
117 DEFINE_EVENT_MAP(template, name, name, PARAMS(proto), PARAMS(args))
119 #undef DEFINE_EVENT_NOARGS
120 #define DEFINE_EVENT_NOARGS(template, name) \
121 DEFINE_EVENT_MAP_NOARGS(template, name, name)
123 #undef TRACE_EVENT_CONDITION
124 #define TRACE_EVENT_CONDITION(name, proto, args, cond, tstruct, assign, print) \
125 TRACE_EVENT_CONDITION_MAP(name, name, \
134 * Stage 1 of the trace events.
136 * Create dummy trace calls for each events, verifying that the LTTng module
137 * TRACE_EVENT headers match the kernel arguments. Will be optimized out by the
141 #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
144 #define TP_PROTO(args...) args
147 #define TP_ARGS(args...) args
149 #undef DEFINE_EVENT_MAP
150 #define DEFINE_EVENT_MAP(_template, _name, _map, _proto, _args) \
151 void trace_##_name(_proto);
153 #undef DEFINE_EVENT_MAP_NOARGS
154 #define DEFINE_EVENT_MAP_NOARGS(_template, _name, _map) \
155 void trace_##_name(void *__data);
157 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
160 * Stage 2 of the trace events.
162 * Create event field type metadata section.
163 * Each event produce an array of fields.
166 #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
168 /* Named field types must be defined in lttng-types.h */
171 #define __field_full(_type, _item, _order, _base) \
174 .type = __type_integer(_type, _order, _base, none), \
178 #define __field(_type, _item) \
179 __field_full(_type, _item, __BYTE_ORDER, 10)
182 #define __field_ext(_type, _item, _filter_type) \
183 __field(_type, _item)
186 #define __field_hex(_type, _item) \
187 __field_full(_type, _item, __BYTE_ORDER, 16)
189 #undef __field_network
190 #define __field_network(_type, _item) \
191 __field_full(_type, _item, __BIG_ENDIAN, 10)
193 #undef __field_network_hex
194 #define __field_network_hex(_type, _item) \
195 __field_full(_type, _item, __BIG_ENDIAN, 16)
197 #undef __array_enc_ext
198 #define __array_enc_ext(_type, _item, _length, _order, _base, _encoding)\
203 .atype = atype_array, \
207 .elem_type = __type_integer(_type, _order, _base, _encoding), \
213 #define __array(_type, _item, _length) \
214 __array_enc_ext(_type, _item, _length, __BYTE_ORDER, 10, none)
217 #define __array_text(_type, _item, _length) \
218 __array_enc_ext(_type, _item, _length, __BYTE_ORDER, 10, UTF8)
221 #define __array_hex(_type, _item, _length) \
222 __array_enc_ext(_type, _item, _length, __BYTE_ORDER, 16, none)
224 #undef __dynamic_array_enc_ext
225 #define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding) \
230 .atype = atype_sequence, \
233 .length_type = __type_integer(u32, __BYTE_ORDER, 10, none), \
234 .elem_type = __type_integer(_type, _order, _base, _encoding), \
239 #undef __dynamic_array
240 #define __dynamic_array(_type, _item, _length) \
241 __dynamic_array_enc_ext(_type, _item, _length, __BYTE_ORDER, 10, none)
243 #undef __dynamic_array_text
244 #define __dynamic_array_text(_type, _item, _length) \
245 __dynamic_array_enc_ext(_type, _item, _length, __BYTE_ORDER, 10, UTF8)
247 #undef __dynamic_array_hex
248 #define __dynamic_array_hex(_type, _item, _length) \
249 __dynamic_array_enc_ext(_type, _item, _length, __BYTE_ORDER, 16, none)
252 #define __string(_item, _src) \
257 .atype = atype_string, \
258 .u.basic.string.encoding = lttng_encode_UTF8, \
262 #undef __string_from_user
263 #define __string_from_user(_item, _src) \
264 __string(_item, _src)
266 #undef TP_STRUCT__entry
267 #define TP_STRUCT__entry(args...) args /* Only one used in this phase */
269 #undef DECLARE_EVENT_CLASS_NOARGS
270 #define DECLARE_EVENT_CLASS_NOARGS(_name, _tstruct, _assign, _print) \
271 static const struct lttng_event_field __event_fields___##_name[] = { \
275 #undef DECLARE_EVENT_CLASS
276 #define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \
277 DECLARE_EVENT_CLASS_NOARGS(_name, PARAMS(_tstruct), PARAMS(_assign), \
280 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
283 * Stage 3 of the trace events.
285 * Create probe callback prototypes.
288 #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
291 #define TP_PROTO(args...) args
293 #undef DECLARE_EVENT_CLASS
294 #define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \
295 static void __event_probe__##_name(void *__data, _proto);
297 #undef DECLARE_EVENT_CLASS_NOARGS
298 #define DECLARE_EVENT_CLASS_NOARGS(_name, _tstruct, _assign, _print) \
299 static void __event_probe__##_name(void *__data);
301 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
304 * Stage 3.9 of the trace events.
306 * Create event descriptions.
309 /* Named field types must be defined in lttng-types.h */
311 #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
314 #define TP_PROBE_CB(_template) &__event_probe__##_template
317 #undef DEFINE_EVENT_MAP_NOARGS
318 #define DEFINE_EVENT_MAP_NOARGS(_template, _name, _map) \
319 static const struct lttng_event_desc __event_desc___##_map = { \
320 .fields = __event_fields___##_template, \
322 .probe_callback = (void *) TP_PROBE_CB(_template), \
323 .nr_fields = ARRAY_SIZE(__event_fields___##_template), \
324 .owner = THIS_MODULE, \
327 #undef DEFINE_EVENT_MAP
328 #define DEFINE_EVENT_MAP(_template, _name, _map, _proto, _args) \
329 DEFINE_EVENT_MAP_NOARGS(_template, _name, _map)
331 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
335 * Stage 4 of the trace events.
337 * Create an array of event description pointers.
340 /* Named field types must be defined in lttng-types.h */
342 #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
344 #undef DEFINE_EVENT_MAP_NOARGS
345 #define DEFINE_EVENT_MAP_NOARGS(_template, _name, _map) \
346 &__event_desc___##_map,
348 #undef DEFINE_EVENT_MAP
349 #define DEFINE_EVENT_MAP(_template, _name, _map, _proto, _args) \
350 DEFINE_EVENT_MAP_NOARGS(_template, _name, _map)
352 #define TP_ID1(_token, _system) _token##_system
353 #define TP_ID(_token, _system) TP_ID1(_token, _system)
355 static const struct lttng_event_desc
*TP_ID(__event_desc___
, TRACE_SYSTEM
)[] = {
356 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
364 * Stage 5 of the trace events.
366 * Create a toplevel descriptor for the whole probe.
369 #define TP_ID1(_token, _system) _token##_system
370 #define TP_ID(_token, _system) TP_ID1(_token, _system)
372 /* non-const because list head will be modified when registered. */
373 static __used
struct lttng_probe_desc
TP_ID(__probe_desc___
, TRACE_SYSTEM
) = {
374 .event_desc
= TP_ID(__event_desc___
, TRACE_SYSTEM
),
375 .nr_events
= ARRAY_SIZE(TP_ID(__event_desc___
, TRACE_SYSTEM
)),
382 * Stage 6 of the trace events.
384 * Create static inline function that calculates event size.
387 #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
389 /* Named field types must be defined in lttng-types.h */
392 #define __field_full(_type, _item, _order, _base) \
393 __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \
394 __event_len += sizeof(_type);
396 #undef __array_enc_ext
397 #define __array_enc_ext(_type, _item, _length, _order, _base, _encoding) \
398 __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \
399 __event_len += sizeof(_type) * (_length);
401 #undef __dynamic_array_enc_ext
402 #define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding)\
403 __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(u32)); \
404 __event_len += sizeof(u32); \
405 __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \
406 __dynamic_len[__dynamic_len_idx] = (_length); \
407 __event_len += sizeof(_type) * __dynamic_len[__dynamic_len_idx]; \
411 #define __string(_item, _src) \
412 __event_len += __dynamic_len[__dynamic_len_idx++] = strlen(_src) + 1;
415 * strlen_user includes \0. If returns 0, it faulted, so we set size to
418 #undef __string_from_user
419 #define __string_from_user(_item, _src) \
420 __event_len += __dynamic_len[__dynamic_len_idx++] = \
421 max_t(size_t, lttng_strlen_user_inatomic(_src), 1);
424 #define TP_PROTO(args...) args
426 #undef TP_STRUCT__entry
427 #define TP_STRUCT__entry(args...) args
429 #undef DECLARE_EVENT_CLASS
430 #define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \
431 static inline size_t __event_get_size__##_name(size_t *__dynamic_len, _proto) \
433 size_t __event_len = 0; \
434 unsigned int __dynamic_len_idx = 0; \
437 (void) __dynamic_len_idx; /* don't warn if unused */ \
439 return __event_len; \
442 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
445 * Stage 7 of the trace events.
447 * Create static inline function that calculates event payload alignment.
450 #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
452 /* Named field types must be defined in lttng-types.h */
455 #define __field_full(_type, _item, _order, _base) \
456 __event_align = max_t(size_t, __event_align, lttng_alignof(_type));
458 #undef __array_enc_ext
459 #define __array_enc_ext(_type, _item, _length, _order, _base, _encoding) \
460 __event_align = max_t(size_t, __event_align, lttng_alignof(_type));
462 #undef __dynamic_array_enc_ext
463 #define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding)\
464 __event_align = max_t(size_t, __event_align, lttng_alignof(u32)); \
465 __event_align = max_t(size_t, __event_align, lttng_alignof(_type));
468 #define __string(_item, _src)
470 #undef __string_from_user
471 #define __string_from_user(_item, _src)
474 #define TP_PROTO(args...) args
476 #undef TP_STRUCT__entry
477 #define TP_STRUCT__entry(args...) args
479 #undef DECLARE_EVENT_CLASS
480 #define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \
481 static inline size_t __event_get_align__##_name(_proto) \
483 size_t __event_align = 1; \
485 return __event_align; \
488 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
492 * Stage 8 of the trace events.
494 * Create structure declaration that allows the "assign" macros to access the
498 #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
500 /* Named field types must be defined in lttng-types.h */
503 #define __field_full(_type, _item, _order, _base) _type _item;
505 #undef __array_enc_ext
506 #define __array_enc_ext(_type, _item, _length, _order, _base, _encoding) \
509 #undef __dynamic_array_enc_ext
510 #define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding)\
514 #define __string(_item, _src) char _item;
516 #undef __string_from_user
517 #define __string_from_user(_item, _src) \
518 __string(_item, _src)
520 #undef TP_STRUCT__entry
521 #define TP_STRUCT__entry(args...) args
523 #undef DECLARE_EVENT_CLASS
524 #define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \
525 struct __event_typemap__##_name { \
529 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
533 * Stage 9 of the trace events.
535 * Create the probe function : call even size calculation and write event data
538 * We use both the field and assignment macros to write the fields in the order
539 * defined in the field declaration. The field declarations control the
540 * execution order, jumping to the appropriate assignment block.
543 #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
546 #define __field_full(_type, _item, _order, _base) \
547 goto __assign_##_item; \
550 #undef __array_enc_ext
551 #define __array_enc_ext(_type, _item, _length, _order, _base, _encoding)\
552 goto __assign_##_item; \
555 #undef __dynamic_array_enc_ext
556 #define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding)\
557 goto __assign_##_item##_1; \
558 __end_field_##_item##_1: \
559 goto __assign_##_item##_2; \
560 __end_field_##_item##_2:
563 #define __string(_item, _src) \
564 goto __assign_##_item; \
567 #undef __string_from_user
568 #define __string_from_user(_item, _src) \
569 __string(_item, _src)
572 * Macros mapping tp_assign() to "=", tp_memcpy() to memcpy() and tp_strcpy() to
576 #define tp_assign(dest, src) \
579 __typeof__(__typemap.dest) __tmp = (src); \
580 lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp)); \
581 __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\
583 goto __end_field_##dest;
585 /* fixed length array memcpy */
587 #define tp_memcpy_gen(write_ops, dest, src, len) \
590 (void) __typemap.dest; \
591 lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__typemap.dest)); \
592 __chan->ops->write_ops(&__ctx, src, len); \
593 goto __end_field_##dest;
596 #define tp_memcpy(dest, src, len) \
597 tp_memcpy_gen(event_write, dest, src, len)
599 #undef tp_memcpy_from_user
600 #define tp_memcpy_from_user(dest, src, len) \
601 tp_memcpy_gen(event_write_from_user, dest, src, len)
603 /* variable length sequence memcpy */
604 #undef tp_memcpy_dyn_gen
605 #define tp_memcpy_dyn_gen(write_ops, dest, src) \
606 __assign_##dest##_1: \
608 u32 __tmpl = __dynamic_len[__dynamic_len_idx]; \
609 lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(u32)); \
610 __chan->ops->event_write(&__ctx, &__tmpl, sizeof(u32)); \
612 goto __end_field_##dest##_1; \
613 __assign_##dest##_2: \
614 lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__typemap.dest)); \
615 __chan->ops->write_ops(&__ctx, src, \
616 sizeof(__typemap.dest) * __get_dynamic_array_len(dest));\
617 goto __end_field_##dest##_2;
620 #define tp_memcpy_dyn(dest, src) \
621 tp_memcpy_dyn_gen(event_write, dest, src)
623 #undef tp_memcpy_dyn_from_user
624 #define tp_memcpy_dyn_from_user(dest, src) \
625 tp_memcpy_dyn_gen(event_write_from_user, dest, src)
628 * The string length including the final \0.
630 #undef tp_copy_string_from_user
631 #define tp_copy_string_from_user(dest, src) \
637 (void) __typemap.dest; \
638 lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__typemap.dest));\
639 __ustrlen = __get_dynamic_array_len(dest); \
640 if (likely(__ustrlen > 1)) { \
641 __chan->ops->event_write_from_user(&__ctx, src, \
644 __chan->ops->event_memset(&__ctx, 0, 1); \
646 goto __end_field_##dest;
648 #define tp_strcpy(dest, src) \
649 tp_memcpy(dest, src, __get_dynamic_array_len(dest))
651 /* Named field types must be defined in lttng-types.h */
654 #define __get_str(field) field
656 #undef __get_dynamic_array
657 #define __get_dynamic_array(field) field
659 /* Beware: this get len actually consumes the len value */
660 #undef __get_dynamic_array_len
661 #define __get_dynamic_array_len(field) __dynamic_len[__dynamic_len_idx++]
664 #define TP_PROTO(args...) args
667 #define TP_ARGS(args...) args
669 #undef TP_STRUCT__entry
670 #define TP_STRUCT__entry(args...) args
672 #undef TP_fast_assign
673 #define TP_fast_assign(args...) args
676 * For state dump, check that "session" argument (mandatory) matches the
677 * session this event belongs to. Ensures that we write state dump data only
678 * into the started session, not into all sessions.
680 #ifdef TP_SESSION_CHECK
681 #define _TP_SESSION_CHECK(session, csession) (session == csession)
682 #else /* TP_SESSION_CHECK */
683 #define _TP_SESSION_CHECK(session, csession) 1
684 #endif /* TP_SESSION_CHECK */
686 #undef DECLARE_EVENT_CLASS
687 #define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \
688 static void __event_probe__##_name(void *__data, _proto) \
690 struct lttng_event *__event = __data; \
691 struct lttng_channel *__chan = __event->chan; \
692 struct lib_ring_buffer_ctx __ctx; \
693 size_t __event_len, __event_align; \
694 size_t __dynamic_len_idx = 0; \
695 size_t __dynamic_len[ARRAY_SIZE(__event_fields___##_name)]; \
696 struct __event_typemap__##_name __typemap; \
700 (void) __dynamic_len_idx; /* don't warn if unused */ \
701 (void) __typemap; /* don't warn if unused */ \
703 if (!_TP_SESSION_CHECK(session, __chan->session)) \
705 if (unlikely(!ACCESS_ONCE(__chan->session->active))) \
707 if (unlikely(!ACCESS_ONCE(__chan->enabled))) \
709 if (unlikely(!ACCESS_ONCE(__event->enabled))) \
711 __event_len = __event_get_size__##_name(__dynamic_len, _args); \
712 __event_align = __event_get_align__##_name(_args); \
713 lib_ring_buffer_ctx_init(&__ctx, __chan->chan, __event, __event_len, \
714 __event_align, -1); \
715 __ret = __chan->ops->event_reserve(&__ctx, __event->id); \
718 /* Control code (field ordering) */ \
720 __chan->ops->event_commit(&__ctx); \
722 /* Copy code, steered by control code */ \
726 #undef DECLARE_EVENT_CLASS_NOARGS
727 #define DECLARE_EVENT_CLASS_NOARGS(_name, _tstruct, _assign, _print) \
728 static void __event_probe__##_name(void *__data) \
730 struct lttng_event *__event = __data; \
731 struct lttng_channel *__chan = __event->chan; \
732 struct lib_ring_buffer_ctx __ctx; \
733 size_t __event_len, __event_align; \
736 if (!_TP_SESSION_CHECK(session, __chan->session)) \
738 if (unlikely(!ACCESS_ONCE(__chan->session->active))) \
740 if (unlikely(!ACCESS_ONCE(__chan->enabled))) \
742 if (unlikely(!ACCESS_ONCE(__event->enabled))) \
746 lib_ring_buffer_ctx_init(&__ctx, __chan->chan, __event, __event_len, \
747 __event_align, -1); \
748 __ret = __chan->ops->event_reserve(&__ctx, __event->id); \
751 /* Control code (field ordering) */ \
753 __chan->ops->event_commit(&__ctx); \
755 /* Copy code, steered by control code */ \
759 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
762 * Stage 10 of the trace events.
764 * Register/unregister probes at module load/unload.
767 #include "lttng-events-reset.h" /* Reset all macros within TRACE_EVENT */
769 #define TP_ID1(_token, _system) _token##_system
770 #define TP_ID(_token, _system) TP_ID1(_token, _system)
771 #define module_init_eval1(_token, _system) module_init(_token##_system)
772 #define module_init_eval(_token, _system) module_init_eval1(_token, _system)
773 #define module_exit_eval1(_token, _system) module_exit(_token##_system)
774 #define module_exit_eval(_token, _system) module_exit_eval1(_token, _system)
776 #ifndef TP_MODULE_NOINIT
777 static int TP_ID(__lttng_events_init__
, TRACE_SYSTEM
)(void)
779 wrapper_vmalloc_sync_all();
780 return lttng_probe_register(&TP_ID(__probe_desc___
, TRACE_SYSTEM
));
783 static void TP_ID(__lttng_events_exit__
, TRACE_SYSTEM
)(void)
785 lttng_probe_unregister(&TP_ID(__probe_desc___
, TRACE_SYSTEM
));
788 #ifndef TP_MODULE_NOAUTOLOAD
789 module_init_eval(__lttng_events_init__
, TRACE_SYSTEM
);
790 module_exit_eval(__lttng_events_exit__
, TRACE_SYSTEM
);
795 #undef module_init_eval
796 #undef module_exit_eval
802 #undef TRACE_EVENT_FLAGS
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