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authorSteven Rostedt (Red Hat) <rostedt@goodmis.org>2015-04-29 13:11:00 -0400
committerSteven Rostedt <rostedt@goodmis.org>2015-05-13 14:05:10 -0400
commitee53bbd172571c944bc2d01b4846fc7c49ebd353 (patch)
tree7067012d69282475eb856edeecc01d242c403f52
parent2167ae727215714d25fe44945cdbe6157f7ac481 (diff)
tracing: Move the perf code out of trace_event.h
The trace_event.h file is for the generic trace event code. Move the perf related code into its own trace header file perf.h Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat
-rw-r--r--include/trace/define_trace.h1
-rw-r--r--include/trace/perf.h350
-rw-r--r--include/trace/trace_events.h351
3 files changed, 351 insertions, 351 deletions
diff --git a/include/trace/define_trace.h b/include/trace/define_trace.h
index b13ba2fc76f7..09b3880105a9 100644
--- a/include/trace/define_trace.h
+++ b/include/trace/define_trace.h
@@ -88,6 +88,7 @@
88 88
89#ifdef CONFIG_EVENT_TRACING 89#ifdef CONFIG_EVENT_TRACING
90#include <trace/trace_events.h> 90#include <trace/trace_events.h>
91#include <trace/perf.h>
91#endif 92#endif
92 93
93#undef TRACE_EVENT 94#undef TRACE_EVENT
diff --git a/include/trace/perf.h b/include/trace/perf.h
new file mode 100644
index 000000000000..5e82add1647b
--- /dev/null
+++ b/include/trace/perf.h
@@ -0,0 +1,350 @@
1/*
2 * Stage 4 of the trace events.
3 *
4 * Override the macros in <trace/trace_events.h> to include the following:
5 *
6 * For those macros defined with TRACE_EVENT:
7 *
8 * static struct ftrace_event_call event_<call>;
9 *
10 * static void ftrace_raw_event_<call>(void *__data, proto)
11 * {
12 * struct ftrace_event_file *ftrace_file = __data;
13 * struct ftrace_event_call *event_call = ftrace_file->event_call;
14 * struct ftrace_data_offsets_<call> __maybe_unused __data_offsets;
15 * unsigned long eflags = ftrace_file->flags;
16 * enum event_trigger_type __tt = ETT_NONE;
17 * struct ring_buffer_event *event;
18 * struct ftrace_raw_<call> *entry; <-- defined in stage 1
19 * struct ring_buffer *buffer;
20 * unsigned long irq_flags;
21 * int __data_size;
22 * int pc;
23 *
24 * if (!(eflags & FTRACE_EVENT_FL_TRIGGER_COND)) {
25 * if (eflags & FTRACE_EVENT_FL_TRIGGER_MODE)
26 * event_triggers_call(ftrace_file, NULL);
27 * if (eflags & FTRACE_EVENT_FL_SOFT_DISABLED)
28 * return;
29 * }
30 *
31 * local_save_flags(irq_flags);
32 * pc = preempt_count();
33 *
34 * __data_size = ftrace_get_offsets_<call>(&__data_offsets, args);
35 *
36 * event = trace_event_buffer_lock_reserve(&buffer, ftrace_file,
37 * event_<call>->event.type,
38 * sizeof(*entry) + __data_size,
39 * irq_flags, pc);
40 * if (!event)
41 * return;
42 * entry = ring_buffer_event_data(event);
43 *
44 * { <assign>; } <-- Here we assign the entries by the __field and
45 * __array macros.
46 *
47 * if (eflags & FTRACE_EVENT_FL_TRIGGER_COND)
48 * __tt = event_triggers_call(ftrace_file, entry);
49 *
50 * if (test_bit(FTRACE_EVENT_FL_SOFT_DISABLED_BIT,
51 * &ftrace_file->flags))
52 * ring_buffer_discard_commit(buffer, event);
53 * else if (!filter_check_discard(ftrace_file, entry, buffer, event))
54 * trace_buffer_unlock_commit(buffer, event, irq_flags, pc);
55 *
56 * if (__tt)
57 * event_triggers_post_call(ftrace_file, __tt);
58 * }
59 *
60 * static struct trace_event ftrace_event_type_<call> = {
61 * .trace = ftrace_raw_output_<call>, <-- stage 2
62 * };
63 *
64 * static char print_fmt_<call>[] = <TP_printk>;
65 *
66 * static struct ftrace_event_class __used event_class_<template> = {
67 * .system = "<system>",
68 * .define_fields = ftrace_define_fields_<call>,
69 * .fields = LIST_HEAD_INIT(event_class_##call.fields),
70 * .raw_init = trace_event_raw_init,
71 * .probe = ftrace_raw_event_##call,
72 * .reg = ftrace_event_reg,
73 * };
74 *
75 * static struct ftrace_event_call event_<call> = {
76 * .class = event_class_<template>,
77 * {
78 * .tp = &__tracepoint_<call>,
79 * },
80 * .event = &ftrace_event_type_<call>,
81 * .print_fmt = print_fmt_<call>,
82 * .flags = TRACE_EVENT_FL_TRACEPOINT,
83 * };
84 * // its only safe to use pointers when doing linker tricks to
85 * // create an array.
86 * static struct ftrace_event_call __used
87 * __attribute__((section("_ftrace_events"))) *__event_<call> = &event_<call>;
88 *
89 */
90
91#ifdef CONFIG_PERF_EVENTS
92
93#define _TRACE_PERF_PROTO(call, proto) \
94 static notrace void \
95 perf_trace_##call(void *__data, proto);
96
97#define _TRACE_PERF_INIT(call) \
98 .perf_probe = perf_trace_##call,
99
100#else
101#define _TRACE_PERF_PROTO(call, proto)
102#define _TRACE_PERF_INIT(call)
103#endif /* CONFIG_PERF_EVENTS */
104
105#undef __entry
106#define __entry entry
107
108#undef __field
109#define __field(type, item)
110
111#undef __field_struct
112#define __field_struct(type, item)
113
114#undef __array
115#define __array(type, item, len)
116
117#undef __dynamic_array
118#define __dynamic_array(type, item, len) \
119 __entry->__data_loc_##item = __data_offsets.item;
120
121#undef __string
122#define __string(item, src) __dynamic_array(char, item, -1)
123
124#undef __assign_str
125#define __assign_str(dst, src) \
126 strcpy(__get_str(dst), (src) ? (const char *)(src) : "(null)");
127
128#undef __bitmask
129#define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1)
130
131#undef __get_bitmask
132#define __get_bitmask(field) (char *)__get_dynamic_array(field)
133
134#undef __assign_bitmask
135#define __assign_bitmask(dst, src, nr_bits) \
136 memcpy(__get_bitmask(dst), (src), __bitmask_size_in_bytes(nr_bits))
137
138#undef TP_fast_assign
139#define TP_fast_assign(args...) args
140
141#undef __perf_addr
142#define __perf_addr(a) (a)
143
144#undef __perf_count
145#define __perf_count(c) (c)
146
147#undef __perf_task
148#define __perf_task(t) (t)
149
150#undef DECLARE_EVENT_CLASS
151#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
152 \
153static notrace void \
154ftrace_raw_event_##call(void *__data, proto) \
155{ \
156 struct ftrace_event_file *ftrace_file = __data; \
157 struct ftrace_data_offsets_##call __maybe_unused __data_offsets;\
158 struct ftrace_event_buffer fbuffer; \
159 struct ftrace_raw_##call *entry; \
160 int __data_size; \
161 \
162 if (ftrace_trigger_soft_disabled(ftrace_file)) \
163 return; \
164 \
165 __data_size = ftrace_get_offsets_##call(&__data_offsets, args); \
166 \
167 entry = ftrace_event_buffer_reserve(&fbuffer, ftrace_file, \
168 sizeof(*entry) + __data_size); \
169 \
170 if (!entry) \
171 return; \
172 \
173 tstruct \
174 \
175 { assign; } \
176 \
177 ftrace_event_buffer_commit(&fbuffer); \
178}
179/*
180 * The ftrace_test_probe is compiled out, it is only here as a build time check
181 * to make sure that if the tracepoint handling changes, the ftrace probe will
182 * fail to compile unless it too is updated.
183 */
184
185#undef DEFINE_EVENT
186#define DEFINE_EVENT(template, call, proto, args) \
187static inline void ftrace_test_probe_##call(void) \
188{ \
189 check_trace_callback_type_##call(ftrace_raw_event_##template); \
190}
191
192#undef DEFINE_EVENT_PRINT
193#define DEFINE_EVENT_PRINT(template, name, proto, args, print)
194
195#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
196
197#undef __entry
198#define __entry REC
199
200#undef __print_flags
201#undef __print_symbolic
202#undef __print_hex
203#undef __get_dynamic_array
204#undef __get_dynamic_array_len
205#undef __get_str
206#undef __get_bitmask
207#undef __print_array
208
209#undef TP_printk
210#define TP_printk(fmt, args...) "\"" fmt "\", " __stringify(args)
211
212#undef DECLARE_EVENT_CLASS
213#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
214_TRACE_PERF_PROTO(call, PARAMS(proto)); \
215static char print_fmt_##call[] = print; \
216static struct ftrace_event_class __used __refdata event_class_##call = { \
217 .system = TRACE_SYSTEM_STRING, \
218 .define_fields = ftrace_define_fields_##call, \
219 .fields = LIST_HEAD_INIT(event_class_##call.fields),\
220 .raw_init = trace_event_raw_init, \
221 .probe = ftrace_raw_event_##call, \
222 .reg = ftrace_event_reg, \
223 _TRACE_PERF_INIT(call) \
224};
225
226#undef DEFINE_EVENT
227#define DEFINE_EVENT(template, call, proto, args) \
228 \
229static struct ftrace_event_call __used event_##call = { \
230 .class = &event_class_##template, \
231 { \
232 .tp = &__tracepoint_##call, \
233 }, \
234 .event.funcs = &ftrace_event_type_funcs_##template, \
235 .print_fmt = print_fmt_##template, \
236 .flags = TRACE_EVENT_FL_TRACEPOINT, \
237}; \
238static struct ftrace_event_call __used \
239__attribute__((section("_ftrace_events"))) *__event_##call = &event_##call
240
241#undef DEFINE_EVENT_PRINT
242#define DEFINE_EVENT_PRINT(template, call, proto, args, print) \
243 \
244static char print_fmt_##call[] = print; \
245 \
246static struct ftrace_event_call __used event_##call = { \
247 .class = &event_class_##template, \
248 { \
249 .tp = &__tracepoint_##call, \
250 }, \
251 .event.funcs = &ftrace_event_type_funcs_##call, \
252 .print_fmt = print_fmt_##call, \
253 .flags = TRACE_EVENT_FL_TRACEPOINT, \
254}; \
255static struct ftrace_event_call __used \
256__attribute__((section("_ftrace_events"))) *__event_##call = &event_##call
257
258#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
259
260#undef TRACE_SYSTEM_VAR
261
262#ifdef CONFIG_PERF_EVENTS
263
264#undef __entry
265#define __entry entry
266
267#undef __get_dynamic_array
268#define __get_dynamic_array(field) \
269 ((void *)__entry + (__entry->__data_loc_##field & 0xffff))
270
271#undef __get_dynamic_array_len
272#define __get_dynamic_array_len(field) \
273 ((__entry->__data_loc_##field >> 16) & 0xffff)
274
275#undef __get_str
276#define __get_str(field) (char *)__get_dynamic_array(field)
277
278#undef __get_bitmask
279#define __get_bitmask(field) (char *)__get_dynamic_array(field)
280
281#undef __perf_addr
282#define __perf_addr(a) (__addr = (a))
283
284#undef __perf_count
285#define __perf_count(c) (__count = (c))
286
287#undef __perf_task
288#define __perf_task(t) (__task = (t))
289
290#undef DECLARE_EVENT_CLASS
291#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
292static notrace void \
293perf_trace_##call(void *__data, proto) \
294{ \
295 struct ftrace_event_call *event_call = __data; \
296 struct ftrace_data_offsets_##call __maybe_unused __data_offsets;\
297 struct ftrace_raw_##call *entry; \
298 struct pt_regs *__regs; \
299 u64 __addr = 0, __count = 1; \
300 struct task_struct *__task = NULL; \
301 struct hlist_head *head; \
302 int __entry_size; \
303 int __data_size; \
304 int rctx; \
305 \
306 __data_size = ftrace_get_offsets_##call(&__data_offsets, args); \
307 \
308 head = this_cpu_ptr(event_call->perf_events); \
309 if (__builtin_constant_p(!__task) && !__task && \
310 hlist_empty(head)) \
311 return; \
312 \
313 __entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32),\
314 sizeof(u64)); \
315 __entry_size -= sizeof(u32); \
316 \
317 entry = perf_trace_buf_prepare(__entry_size, \
318 event_call->event.type, &__regs, &rctx); \
319 if (!entry) \
320 return; \
321 \
322 perf_fetch_caller_regs(__regs); \
323 \
324 tstruct \
325 \
326 { assign; } \
327 \
328 perf_trace_buf_submit(entry, __entry_size, rctx, __addr, \
329 __count, __regs, head, __task); \
330}
331
332/*
333 * This part is compiled out, it is only here as a build time check
334 * to make sure that if the tracepoint handling changes, the
335 * perf probe will fail to compile unless it too is updated.
336 */
337#undef DEFINE_EVENT
338#define DEFINE_EVENT(template, call, proto, args) \
339static inline void perf_test_probe_##call(void) \
340{ \
341 check_trace_callback_type_##call(perf_trace_##template); \
342}
343
344
345#undef DEFINE_EVENT_PRINT
346#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
347 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
348
349#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
350#endif /* CONFIG_PERF_EVENTS */
diff --git a/include/trace/trace_events.h b/include/trace/trace_events.h
index 37d4b10b111d..19af616e9dbd 100644
--- a/include/trace/trace_events.h
+++ b/include/trace/trace_events.h
@@ -506,354 +506,3 @@ static inline notrace int ftrace_get_offsets_##call( \
506 506
507#include TRACE_INCLUDE(TRACE_INCLUDE_FILE) 507#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
508 508
509/*
510 * Stage 4 of the trace events.
511 *
512 * Override the macros in <trace/trace_events.h> to include the following:
513 *
514 * For those macros defined with TRACE_EVENT:
515 *
516 * static struct ftrace_event_call event_<call>;
517 *
518 * static void ftrace_raw_event_<call>(void *__data, proto)
519 * {
520 * struct ftrace_event_file *ftrace_file = __data;
521 * struct ftrace_event_call *event_call = ftrace_file->event_call;
522 * struct ftrace_data_offsets_<call> __maybe_unused __data_offsets;
523 * unsigned long eflags = ftrace_file->flags;
524 * enum event_trigger_type __tt = ETT_NONE;
525 * struct ring_buffer_event *event;
526 * struct ftrace_raw_<call> *entry; <-- defined in stage 1
527 * struct ring_buffer *buffer;
528 * unsigned long irq_flags;
529 * int __data_size;
530 * int pc;
531 *
532 * if (!(eflags & FTRACE_EVENT_FL_TRIGGER_COND)) {
533 * if (eflags & FTRACE_EVENT_FL_TRIGGER_MODE)
534 * event_triggers_call(ftrace_file, NULL);
535 * if (eflags & FTRACE_EVENT_FL_SOFT_DISABLED)
536 * return;
537 * }
538 *
539 * local_save_flags(irq_flags);
540 * pc = preempt_count();
541 *
542 * __data_size = ftrace_get_offsets_<call>(&__data_offsets, args);
543 *
544 * event = trace_event_buffer_lock_reserve(&buffer, ftrace_file,
545 * event_<call>->event.type,
546 * sizeof(*entry) + __data_size,
547 * irq_flags, pc);
548 * if (!event)
549 * return;
550 * entry = ring_buffer_event_data(event);
551 *
552 * { <assign>; } <-- Here we assign the entries by the __field and
553 * __array macros.
554 *
555 * if (eflags & FTRACE_EVENT_FL_TRIGGER_COND)
556 * __tt = event_triggers_call(ftrace_file, entry);
557 *
558 * if (test_bit(FTRACE_EVENT_FL_SOFT_DISABLED_BIT,
559 * &ftrace_file->flags))
560 * ring_buffer_discard_commit(buffer, event);
561 * else if (!filter_check_discard(ftrace_file, entry, buffer, event))
562 * trace_buffer_unlock_commit(buffer, event, irq_flags, pc);
563 *
564 * if (__tt)
565 * event_triggers_post_call(ftrace_file, __tt);
566 * }
567 *
568 * static struct trace_event ftrace_event_type_<call> = {
569 * .trace = ftrace_raw_output_<call>, <-- stage 2
570 * };
571 *
572 * static char print_fmt_<call>[] = <TP_printk>;
573 *
574 * static struct ftrace_event_class __used event_class_<template> = {
575 * .system = "<system>",
576 * .define_fields = ftrace_define_fields_<call>,
577 * .fields = LIST_HEAD_INIT(event_class_##call.fields),
578 * .raw_init = trace_event_raw_init,
579 * .probe = ftrace_raw_event_##call,
580 * .reg = ftrace_event_reg,
581 * };
582 *
583 * static struct ftrace_event_call event_<call> = {
584 * .class = event_class_<template>,
585 * {
586 * .tp = &__tracepoint_<call>,
587 * },
588 * .event = &ftrace_event_type_<call>,
589 * .print_fmt = print_fmt_<call>,
590 * .flags = TRACE_EVENT_FL_TRACEPOINT,
591 * };
592 * // its only safe to use pointers when doing linker tricks to
593 * // create an array.
594 * static struct ftrace_event_call __used
595 * __attribute__((section("_ftrace_events"))) *__event_<call> = &event_<call>;
596 *
597 */
598
599#ifdef CONFIG_PERF_EVENTS
600
601#define _TRACE_PERF_PROTO(call, proto) \
602 static notrace void \
603 perf_trace_##call(void *__data, proto);
604
605#define _TRACE_PERF_INIT(call) \
606 .perf_probe = perf_trace_##call,
607
608#else
609#define _TRACE_PERF_PROTO(call, proto)
610#define _TRACE_PERF_INIT(call)
611#endif /* CONFIG_PERF_EVENTS */
612
613#undef __entry
614#define __entry entry
615
616#undef __field
617#define __field(type, item)
618
619#undef __field_struct
620#define __field_struct(type, item)
621
622#undef __array
623#define __array(type, item, len)
624
625#undef __dynamic_array
626#define __dynamic_array(type, item, len) \
627 __entry->__data_loc_##item = __data_offsets.item;
628
629#undef __string
630#define __string(item, src) __dynamic_array(char, item, -1)
631
632#undef __assign_str
633#define __assign_str(dst, src) \
634 strcpy(__get_str(dst), (src) ? (const char *)(src) : "(null)");
635
636#undef __bitmask
637#define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1)
638
639#undef __get_bitmask
640#define __get_bitmask(field) (char *)__get_dynamic_array(field)
641
642#undef __assign_bitmask
643#define __assign_bitmask(dst, src, nr_bits) \
644 memcpy(__get_bitmask(dst), (src), __bitmask_size_in_bytes(nr_bits))
645
646#undef TP_fast_assign
647#define TP_fast_assign(args...) args
648
649#undef __perf_addr
650#define __perf_addr(a) (a)
651
652#undef __perf_count
653#define __perf_count(c) (c)
654
655#undef __perf_task
656#define __perf_task(t) (t)
657
658#undef DECLARE_EVENT_CLASS
659#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
660 \
661static notrace void \
662ftrace_raw_event_##call(void *__data, proto) \
663{ \
664 struct ftrace_event_file *ftrace_file = __data; \
665 struct ftrace_data_offsets_##call __maybe_unused __data_offsets;\
666 struct ftrace_event_buffer fbuffer; \
667 struct ftrace_raw_##call *entry; \
668 int __data_size; \
669 \
670 if (ftrace_trigger_soft_disabled(ftrace_file)) \
671 return; \
672 \
673 __data_size = ftrace_get_offsets_##call(&__data_offsets, args); \
674 \
675 entry = ftrace_event_buffer_reserve(&fbuffer, ftrace_file, \
676 sizeof(*entry) + __data_size); \
677 \
678 if (!entry) \
679 return; \
680 \
681 tstruct \
682 \
683 { assign; } \
684 \
685 ftrace_event_buffer_commit(&fbuffer); \
686}
687/*
688 * The ftrace_test_probe is compiled out, it is only here as a build time check
689 * to make sure that if the tracepoint handling changes, the ftrace probe will
690 * fail to compile unless it too is updated.
691 */
692
693#undef DEFINE_EVENT
694#define DEFINE_EVENT(template, call, proto, args) \
695static inline void ftrace_test_probe_##call(void) \
696{ \
697 check_trace_callback_type_##call(ftrace_raw_event_##template); \
698}
699
700#undef DEFINE_EVENT_PRINT
701#define DEFINE_EVENT_PRINT(template, name, proto, args, print)
702
703#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
704
705#undef __entry
706#define __entry REC
707
708#undef __print_flags
709#undef __print_symbolic
710#undef __print_hex
711#undef __get_dynamic_array
712#undef __get_dynamic_array_len
713#undef __get_str
714#undef __get_bitmask
715#undef __print_array
716
717#undef TP_printk
718#define TP_printk(fmt, args...) "\"" fmt "\", " __stringify(args)
719
720#undef DECLARE_EVENT_CLASS
721#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
722_TRACE_PERF_PROTO(call, PARAMS(proto)); \
723static char print_fmt_##call[] = print; \
724static struct ftrace_event_class __used __refdata event_class_##call = { \
725 .system = TRACE_SYSTEM_STRING, \
726 .define_fields = ftrace_define_fields_##call, \
727 .fields = LIST_HEAD_INIT(event_class_##call.fields),\
728 .raw_init = trace_event_raw_init, \
729 .probe = ftrace_raw_event_##call, \
730 .reg = ftrace_event_reg, \
731 _TRACE_PERF_INIT(call) \
732};
733
734#undef DEFINE_EVENT
735#define DEFINE_EVENT(template, call, proto, args) \
736 \
737static struct ftrace_event_call __used event_##call = { \
738 .class = &event_class_##template, \
739 { \
740 .tp = &__tracepoint_##call, \
741 }, \
742 .event.funcs = &ftrace_event_type_funcs_##template, \
743 .print_fmt = print_fmt_##template, \
744 .flags = TRACE_EVENT_FL_TRACEPOINT, \
745}; \
746static struct ftrace_event_call __used \
747__attribute__((section("_ftrace_events"))) *__event_##call = &event_##call
748
749#undef DEFINE_EVENT_PRINT
750#define DEFINE_EVENT_PRINT(template, call, proto, args, print) \
751 \
752static char print_fmt_##call[] = print; \
753 \
754static struct ftrace_event_call __used event_##call = { \
755 .class = &event_class_##template, \
756 { \
757 .tp = &__tracepoint_##call, \
758 }, \
759 .event.funcs = &ftrace_event_type_funcs_##call, \
760 .print_fmt = print_fmt_##call, \
761 .flags = TRACE_EVENT_FL_TRACEPOINT, \
762}; \
763static struct ftrace_event_call __used \
764__attribute__((section("_ftrace_events"))) *__event_##call = &event_##call
765
766#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
767
768#undef TRACE_SYSTEM_VAR
769
770#ifdef CONFIG_PERF_EVENTS
771
772#undef __entry
773#define __entry entry
774
775#undef __get_dynamic_array
776#define __get_dynamic_array(field) \
777 ((void *)__entry + (__entry->__data_loc_##field & 0xffff))
778
779#undef __get_dynamic_array_len
780#define __get_dynamic_array_len(field) \
781 ((__entry->__data_loc_##field >> 16) & 0xffff)
782
783#undef __get_str
784#define __get_str(field) (char *)__get_dynamic_array(field)
785
786#undef __get_bitmask
787#define __get_bitmask(field) (char *)__get_dynamic_array(field)
788
789#undef __perf_addr
790#define __perf_addr(a) (__addr = (a))
791
792#undef __perf_count
793#define __perf_count(c) (__count = (c))
794
795#undef __perf_task
796#define __perf_task(t) (__task = (t))
797
798#undef DECLARE_EVENT_CLASS
799#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
800static notrace void \
801perf_trace_##call(void *__data, proto) \
802{ \
803 struct ftrace_event_call *event_call = __data; \
804 struct ftrace_data_offsets_##call __maybe_unused __data_offsets;\
805 struct ftrace_raw_##call *entry; \
806 struct pt_regs *__regs; \
807 u64 __addr = 0, __count = 1; \
808 struct task_struct *__task = NULL; \
809 struct hlist_head *head; \
810 int __entry_size; \
811 int __data_size; \
812 int rctx; \
813 \
814 __data_size = ftrace_get_offsets_##call(&__data_offsets, args); \
815 \
816 head = this_cpu_ptr(event_call->perf_events); \
817 if (__builtin_constant_p(!__task) && !__task && \
818 hlist_empty(head)) \
819 return; \
820 \
821 __entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32),\
822 sizeof(u64)); \
823 __entry_size -= sizeof(u32); \
824 \
825 entry = perf_trace_buf_prepare(__entry_size, \
826 event_call->event.type, &__regs, &rctx); \
827 if (!entry) \
828 return; \
829 \
830 perf_fetch_caller_regs(__regs); \
831 \
832 tstruct \
833 \
834 { assign; } \
835 \
836 perf_trace_buf_submit(entry, __entry_size, rctx, __addr, \
837 __count, __regs, head, __task); \
838}
839
840/*
841 * This part is compiled out, it is only here as a build time check
842 * to make sure that if the tracepoint handling changes, the
843 * perf probe will fail to compile unless it too is updated.
844 */
845#undef DEFINE_EVENT
846#define DEFINE_EVENT(template, call, proto, args) \
847static inline void perf_test_probe_##call(void) \
848{ \
849 check_trace_callback_type_##call(perf_trace_##template); \
850}
851
852
853#undef DEFINE_EVENT_PRINT
854#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
855 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
856
857#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
858#endif /* CONFIG_PERF_EVENTS */
859
generated by cgit v1.2.2 (git 2.25.0) at 2025-08-30 23:54:54 -0400