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-rw-r--r--include/trace/perf.h258
1 files changed, 0 insertions, 258 deletions
diff --git a/include/trace/perf.h b/include/trace/perf.h
index 1b5443cebedc..26486fcd74ce 100644
--- a/include/trace/perf.h
+++ b/include/trace/perf.h
@@ -1,261 +1,3 @@
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 trace_event_call event_<call>;
9 *
10 * static void trace_event_raw_event_<call>(void *__data, proto)
11 * {
12 * struct trace_event_file *trace_file = __data;
13 * struct trace_event_call *event_call = trace_file->event_call;
14 * struct trace_event_data_offsets_<call> __maybe_unused __data_offsets;
15 * unsigned long eflags = trace_file->flags;
16 * enum event_trigger_type __tt = ETT_NONE;
17 * struct ring_buffer_event *event;
18 * struct trace_event_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 & EVENT_FILE_FL_TRIGGER_COND)) {
25 * if (eflags & EVENT_FILE_FL_TRIGGER_MODE)
26 * event_triggers_call(trace_file, NULL);
27 * if (eflags & EVENT_FILE_FL_SOFT_DISABLED)
28 * return;
29 * }
30 *
31 * local_save_flags(irq_flags);
32 * pc = preempt_count();
33 *
34 * __data_size = trace_event_get_offsets_<call>(&__data_offsets, args);
35 *
36 * event = trace_event_buffer_lock_reserve(&buffer, trace_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 & EVENT_FILE_FL_TRIGGER_COND)
48 * __tt = event_triggers_call(trace_file, entry);
49 *
50 * if (test_bit(EVENT_FILE_FL_SOFT_DISABLED_BIT,
51 * &trace_file->flags))
52 * ring_buffer_discard_commit(buffer, event);
53 * else if (!filter_check_discard(trace_file, entry, buffer, event))
54 * trace_buffer_unlock_commit(buffer, event, irq_flags, pc);
55 *
56 * if (__tt)
57 * event_triggers_post_call(trace_file, __tt);
58 * }
59 *
60 * static struct trace_event ftrace_event_type_<call> = {
61 * .trace = trace_raw_output_<call>, <-- stage 2
62 * };
63 *
64 * static char print_fmt_<call>[] = <TP_printk>;
65 *
66 * static struct trace_event_class __used event_class_<template> = {
67 * .system = "<system>",
68 * .define_fields = trace_event_define_fields_<call>,
69 * .fields = LIST_HEAD_INIT(event_class_##call.fields),
70 * .raw_init = trace_event_raw_init,
71 * .probe = trace_event_raw_event_##call,
72 * .reg = trace_event_reg,
73 * };
74 *
75 * static struct trace_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 trace_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 \
154trace_event_raw_event_##call(void *__data, proto) \
155{ \
156 struct trace_event_file *trace_file = __data; \
157 struct trace_event_data_offsets_##call __maybe_unused __data_offsets;\
158 struct trace_event_buffer fbuffer; \
159 struct trace_event_raw_##call *entry; \
160 int __data_size; \
161 \
162 if (trace_trigger_soft_disabled(trace_file)) \
163 return; \
164 \
165 __data_size = trace_event_get_offsets_##call(&__data_offsets, args); \
166 \
167 entry = trace_event_buffer_reserve(&fbuffer, trace_file, \
168 sizeof(*entry) + __data_size); \
169 \
170 if (!entry) \
171 return; \
172 \
173 tstruct \
174 \
175 { assign; } \
176 \
177 trace_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(trace_event_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 trace_event_class __used __refdata event_class_##call = { \
217 .system = TRACE_SYSTEM_STRING, \
218 .define_fields = trace_event_define_fields_##call, \
219 .fields = LIST_HEAD_INIT(event_class_##call.fields),\
220 .raw_init = trace_event_raw_init, \
221 .probe = trace_event_raw_event_##call, \
222 .reg = trace_event_reg, \
223 _TRACE_PERF_INIT(call) \
224};
225
226#undef DEFINE_EVENT
227#define DEFINE_EVENT(template, call, proto, args) \
228 \
229static struct trace_event_call __used event_##call = { \
230 .class = &event_class_##template, \
231 { \
232 .tp = &__tracepoint_##call, \
233 }, \
234 .event.funcs = &trace_event_type_funcs_##template, \
235 .print_fmt = print_fmt_##template, \
236 .flags = TRACE_EVENT_FL_TRACEPOINT, \
237}; \
238static struct trace_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 trace_event_call __used event_##call = { \
247 .class = &event_class_##template, \
248 { \
249 .tp = &__tracepoint_##call, \
250 }, \
251 .event.funcs = &trace_event_type_funcs_##call, \
252 .print_fmt = print_fmt_##call, \
253 .flags = TRACE_EVENT_FL_TRACEPOINT, \
254}; \
255static struct trace_event_call __used \
256__attribute__((section("_ftrace_events"))) *__event_##call = &event_##call
257
258#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
259 1
260#undef TRACE_SYSTEM_VAR 2#undef TRACE_SYSTEM_VAR
261 3
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