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[mirror_ubuntu-artful-kernel.git] / include / trace / ftrace.h
CommitLineData
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1/*
2 * Stage 1 of the trace events.
3 *
4 * Override the macros in <trace/trace_events.h> to include the following:
5 *
6 * struct ftrace_raw_<call> {
7 * struct trace_entry ent;
8 * <type> <item>;
9 * <type2> <item2>[<len>];
10 * [...]
11 * };
12 *
13 * The <type> <item> is created by the __field(type, item) macro or
14 * the __array(type2, item2, len) macro.
15 * We simply do "type item;", and that will create the fields
16 * in the structure.
17 */
18
19#include <linux/ftrace_event.h>
20
ff038f5c 21/*
091ad365 22 * DECLARE_EVENT_CLASS can be used to add a generic function
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23 * handlers for events. That is, if all events have the same
24 * parameters and just have distinct trace points.
25 * Each tracepoint can be defined with DEFINE_EVENT and that
091ad365 26 * will map the DECLARE_EVENT_CLASS to the tracepoint.
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27 *
28 * TRACE_EVENT is a one to one mapping between tracepoint and template.
29 */
30#undef TRACE_EVENT
31#define TRACE_EVENT(name, proto, args, tstruct, assign, print) \
091ad365 32 DECLARE_EVENT_CLASS(name, \
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33 PARAMS(proto), \
34 PARAMS(args), \
35 PARAMS(tstruct), \
36 PARAMS(assign), \
37 PARAMS(print)); \
38 DEFINE_EVENT(name, name, PARAMS(proto), PARAMS(args));
39
40
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41#undef __field
42#define __field(type, item) type item;
43
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44#undef __field_ext
45#define __field_ext(type, item, filter_type) type item;
46
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47#undef __array
48#define __array(type, item, len) type item[len];
49
7fcb7c47 50#undef __dynamic_array
7d536cb3 51#define __dynamic_array(type, item, len) u32 __data_loc_##item;
f42c85e7 52
9cbf1176 53#undef __string
7fcb7c47 54#define __string(item, src) __dynamic_array(char, item, -1)
9cbf1176 55
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56#undef TP_STRUCT__entry
57#define TP_STRUCT__entry(args...) args
58
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59#undef DECLARE_EVENT_CLASS
60#define DECLARE_EVENT_CLASS(name, proto, args, tstruct, assign, print) \
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61 struct ftrace_raw_##name { \
62 struct trace_entry ent; \
63 tstruct \
64 char __data[0]; \
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65 }; \
66 \
67 static struct ftrace_event_class event_class_##name;
68
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69#undef DEFINE_EVENT
70#define DEFINE_EVENT(template, name, proto, args) \
49c17746 71 static struct ftrace_event_call __used \
86c38a31 72 __attribute__((__aligned__(4))) event_##name
f42c85e7 73
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74#undef DEFINE_EVENT_FN
75#define DEFINE_EVENT_FN(template, name, proto, args, reg, unreg) \
76 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
77
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78#undef DEFINE_EVENT_PRINT
79#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
80 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
81
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82/* Callbacks are meaningless to ftrace. */
83#undef TRACE_EVENT_FN
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84#define TRACE_EVENT_FN(name, proto, args, tstruct, \
85 assign, print, reg, unreg) \
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86 TRACE_EVENT(name, PARAMS(proto), PARAMS(args), \
87 PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \
97419875 88
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89#undef TRACE_EVENT_FLAGS
90#define TRACE_EVENT_FLAGS(name, value) \
53cf810b 91 __TRACE_EVENT_FLAGS(name, value)
1ed0c597 92
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93#undef TRACE_EVENT_PERF_PERM
94#define TRACE_EVENT_PERF_PERM(name, expr...) \
95 __TRACE_EVENT_PERF_PERM(name, expr)
96
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97#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
98
9cbf1176 99
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100/*
101 * Stage 2 of the trace events.
102 *
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103 * Include the following:
104 *
7fcb7c47 105 * struct ftrace_data_offsets_<call> {
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106 * u32 <item1>;
107 * u32 <item2>;
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108 * [...]
109 * };
110 *
7d536cb3 111 * The __dynamic_array() macro will create each u32 <item>, this is
7fcb7c47 112 * to keep the offset of each array from the beginning of the event.
7d536cb3 113 * The size of an array is also encoded, in the higher 16 bits of <item>.
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114 */
115
7fcb7c47 116#undef __field
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117#define __field(type, item)
118
119#undef __field_ext
120#define __field_ext(type, item, filter_type)
7fcb7c47 121
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122#undef __array
123#define __array(type, item, len)
124
7fcb7c47 125#undef __dynamic_array
7d536cb3 126#define __dynamic_array(type, item, len) u32 item;
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127
128#undef __string
7fcb7c47 129#define __string(item, src) __dynamic_array(char, item, -1)
9cbf1176 130
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131#undef DECLARE_EVENT_CLASS
132#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
7fcb7c47 133 struct ftrace_data_offsets_##call { \
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134 tstruct; \
135 };
136
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137#undef DEFINE_EVENT
138#define DEFINE_EVENT(template, name, proto, args)
139
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140#undef DEFINE_EVENT_PRINT
141#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
142 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
143
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144#undef TRACE_EVENT_FLAGS
145#define TRACE_EVENT_FLAGS(event, flag)
146
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147#undef TRACE_EVENT_PERF_PERM
148#define TRACE_EVENT_PERF_PERM(event, expr...)
149
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150#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
151
152/*
153 * Stage 3 of the trace events.
154 *
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155 * Override the macros in <trace/trace_events.h> to include the following:
156 *
157 * enum print_line_t
158 * ftrace_raw_output_<call>(struct trace_iterator *iter, int flags)
159 * {
160 * struct trace_seq *s = &iter->seq;
161 * struct ftrace_raw_<call> *field; <-- defined in stage 1
162 * struct trace_entry *entry;
bc289ae9 163 * struct trace_seq *p = &iter->tmp_seq;
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164 * int ret;
165 *
166 * entry = iter->ent;
167 *
32c0edae 168 * if (entry->type != event_<call>->event.type) {
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169 * WARN_ON_ONCE(1);
170 * return TRACE_TYPE_UNHANDLED;
171 * }
172 *
173 * field = (typeof(field))entry;
174 *
56d8bd3f 175 * trace_seq_init(p);
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176 * ret = trace_seq_printf(s, "%s: ", <call>);
177 * if (ret)
178 * ret = trace_seq_printf(s, <TP_printk> "\n");
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179 * if (!ret)
180 * return TRACE_TYPE_PARTIAL_LINE;
181 *
182 * return TRACE_TYPE_HANDLED;
183 * }
184 *
185 * This is the method used to print the raw event to the trace
186 * output format. Note, this is not needed if the data is read
187 * in binary.
188 */
189
190#undef __entry
191#define __entry field
192
193#undef TP_printk
194#define TP_printk(fmt, args...) fmt "\n", args
195
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196#undef __get_dynamic_array
197#define __get_dynamic_array(field) \
7d536cb3 198 ((void *)__entry + (__entry->__data_loc_##field & 0xffff))
7fcb7c47 199
9cbf1176 200#undef __get_str
7fcb7c47 201#define __get_str(field) (char *)__get_dynamic_array(field)
9cbf1176 202
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203#undef __print_flags
204#define __print_flags(flag, delim, flag_array...) \
205 ({ \
a48f494e 206 static const struct trace_print_flags __flags[] = \
be74b73a 207 { flag_array, { -1, NULL }}; \
a48f494e 208 ftrace_print_flags_seq(p, delim, flag, __flags); \
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209 })
210
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211#undef __print_symbolic
212#define __print_symbolic(value, symbol_array...) \
213 ({ \
214 static const struct trace_print_flags symbols[] = \
215 { symbol_array, { -1, NULL }}; \
216 ftrace_print_symbols_seq(p, value, symbols); \
217 })
218
2fc1b6f0 219#undef __print_symbolic_u64
220#if BITS_PER_LONG == 32
221#define __print_symbolic_u64(value, symbol_array...) \
222 ({ \
223 static const struct trace_print_flags_u64 symbols[] = \
224 { symbol_array, { -1, NULL } }; \
225 ftrace_print_symbols_seq_u64(p, value, symbols); \
226 })
227#else
228#define __print_symbolic_u64(value, symbol_array...) \
229 __print_symbolic(value, symbol_array)
230#endif
231
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232#undef __print_hex
233#define __print_hex(buf, buf_len) ftrace_print_hex_seq(p, buf, buf_len)
234
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235#undef DECLARE_EVENT_CLASS
236#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
83f0d539 237static notrace enum print_line_t \
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238ftrace_raw_output_##call(struct trace_iterator *iter, int flags, \
239 struct trace_event *trace_event) \
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240{ \
241 struct trace_seq *s = &iter->seq; \
f71130de 242 struct trace_seq __maybe_unused *p = &iter->tmp_seq; \
f42c85e7 243 struct ftrace_raw_##call *field; \
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244 int ret; \
245 \
f71130de 246 field = (typeof(field))iter->ent; \
80decc70 247 \
f71130de 248 ret = ftrace_raw_output_prep(iter, trace_event); \
ff038f5c 249 if (ret) \
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250 return ret; \
251 \
252 ret = trace_seq_printf(s, print); \
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253 if (!ret) \
254 return TRACE_TYPE_PARTIAL_LINE; \
255 \
256 return TRACE_TYPE_HANDLED; \
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257} \
258static struct trace_event_functions ftrace_event_type_funcs_##call = { \
259 .trace = ftrace_raw_output_##call, \
260};
ff038f5c 261
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262#undef DEFINE_EVENT_PRINT
263#define DEFINE_EVENT_PRINT(template, call, proto, args, print) \
83f0d539 264static notrace enum print_line_t \
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265ftrace_raw_output_##call(struct trace_iterator *iter, int flags, \
266 struct trace_event *event) \
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267{ \
268 struct trace_seq *s = &iter->seq; \
269 struct ftrace_raw_##template *field; \
270 struct trace_entry *entry; \
bc289ae9 271 struct trace_seq *p = &iter->tmp_seq; \
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272 int ret; \
273 \
274 entry = iter->ent; \
275 \
32c0edae 276 if (entry->type != event_##call.event.type) { \
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277 WARN_ON_ONCE(1); \
278 return TRACE_TYPE_UNHANDLED; \
279 } \
280 \
281 field = (typeof(field))entry; \
282 \
56d8bd3f 283 trace_seq_init(p); \
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284 ret = trace_seq_printf(s, "%s: ", #call); \
285 if (ret) \
286 ret = trace_seq_printf(s, print); \
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287 if (!ret) \
288 return TRACE_TYPE_PARTIAL_LINE; \
289 \
290 return TRACE_TYPE_HANDLED; \
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291} \
292static struct trace_event_functions ftrace_event_type_funcs_##call = { \
293 .trace = ftrace_raw_output_##call, \
294};
e5bc9721 295
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296#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
297
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298#undef __field_ext
299#define __field_ext(type, item, filter_type) \
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300 ret = trace_define_field(event_call, #type, #item, \
301 offsetof(typeof(field), item), \
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302 sizeof(field.item), \
303 is_signed_type(type), filter_type); \
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304 if (ret) \
305 return ret;
306
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307#undef __field
308#define __field(type, item) __field_ext(type, item, FILTER_OTHER)
309
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310#undef __array
311#define __array(type, item, len) \
04295780 312 do { \
87291347 313 char *type_str = #type"["__stringify(len)"]"; \
04295780 314 BUILD_BUG_ON(len > MAX_FILTER_STR_VAL); \
87291347 315 ret = trace_define_field(event_call, type_str, #item, \
f42c85e7 316 offsetof(typeof(field), item), \
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317 sizeof(field.item), \
318 is_signed_type(type), FILTER_OTHER); \
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319 if (ret) \
320 return ret; \
321 } while (0);
f42c85e7 322
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323#undef __dynamic_array
324#define __dynamic_array(type, item, len) \
68fd60a8 325 ret = trace_define_field(event_call, "__data_loc " #type "[]", #item, \
43b51ead 326 offsetof(typeof(field), __data_loc_##item), \
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327 sizeof(field.__data_loc_##item), \
328 is_signed_type(type), FILTER_OTHER);
7fcb7c47 329
9cbf1176 330#undef __string
7fcb7c47 331#define __string(item, src) __dynamic_array(char, item, -1)
9cbf1176 332
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333#undef DECLARE_EVENT_CLASS
334#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, func, print) \
7e4f44b1 335static int notrace __init \
14be96c9 336ftrace_define_fields_##call(struct ftrace_event_call *event_call) \
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337{ \
338 struct ftrace_raw_##call field; \
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339 int ret; \
340 \
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341 tstruct; \
342 \
343 return ret; \
344}
345
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346#undef DEFINE_EVENT
347#define DEFINE_EVENT(template, name, proto, args)
348
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349#undef DEFINE_EVENT_PRINT
350#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
351 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
352
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353#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
354
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355/*
356 * remember the offset of each array from the beginning of the event.
357 */
358
359#undef __entry
360#define __entry entry
361
362#undef __field
363#define __field(type, item)
364
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365#undef __field_ext
366#define __field_ext(type, item, filter_type)
367
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368#undef __array
369#define __array(type, item, len)
370
371#undef __dynamic_array
372#define __dynamic_array(type, item, len) \
373 __data_offsets->item = __data_size + \
374 offsetof(typeof(*entry), __data); \
7d536cb3 375 __data_offsets->item |= (len * sizeof(type)) << 16; \
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376 __data_size += (len) * sizeof(type);
377
378#undef __string
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379#define __string(item, src) __dynamic_array(char, item, \
380 strlen((src) ? (const char *)(src) : "(null)") + 1)
7fcb7c47 381
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382#undef DECLARE_EVENT_CLASS
383#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
83f0d539 384static inline notrace int ftrace_get_offsets_##call( \
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385 struct ftrace_data_offsets_##call *__data_offsets, proto) \
386{ \
387 int __data_size = 0; \
388 struct ftrace_raw_##call __maybe_unused *entry; \
389 \
390 tstruct; \
391 \
392 return __data_size; \
393}
394
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395#undef DEFINE_EVENT
396#define DEFINE_EVENT(template, name, proto, args)
397
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398#undef DEFINE_EVENT_PRINT
399#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
400 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
401
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402#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
403
c32e827b 404/*
9cbf1176 405 * Stage 4 of the trace events.
c32e827b 406 *
ea20d929 407 * Override the macros in <trace/trace_events.h> to include the following:
c32e827b 408 *
157587d7 409 * For those macros defined with TRACE_EVENT:
c32e827b
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410 *
411 * static struct ftrace_event_call event_<call>;
412 *
2239291a 413 * static void ftrace_raw_event_<call>(void *__data, proto)
c32e827b 414 * {
ccb469a1
SR
415 * struct ftrace_event_file *ftrace_file = __data;
416 * struct ftrace_event_call *event_call = ftrace_file->event_call;
50354a8a 417 * struct ftrace_data_offsets_<call> __maybe_unused __data_offsets;
bac5fb97
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418 * unsigned long eflags = ftrace_file->flags;
419 * enum event_trigger_type __tt = ETT_NONE;
ef18012b
SR
420 * struct ring_buffer_event *event;
421 * struct ftrace_raw_<call> *entry; <-- defined in stage 1
e77405ad 422 * struct ring_buffer *buffer;
ef18012b 423 * unsigned long irq_flags;
50354a8a 424 * int __data_size;
ef18012b
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425 * int pc;
426 *
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427 * if (!(eflags & FTRACE_EVENT_FL_TRIGGER_COND)) {
428 * if (eflags & FTRACE_EVENT_FL_TRIGGER_MODE)
429 * event_triggers_call(ftrace_file, NULL);
430 * if (eflags & FTRACE_EVENT_FL_SOFT_DISABLED)
431 * return;
432 * }
417944c4 433 *
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434 * local_save_flags(irq_flags);
435 * pc = preempt_count();
436 *
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437 * __data_size = ftrace_get_offsets_<call>(&__data_offsets, args);
438 *
ccb469a1 439 * event = trace_event_buffer_lock_reserve(&buffer, ftrace_file,
32c0edae 440 * event_<call>->event.type,
50354a8a 441 * sizeof(*entry) + __data_size,
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442 * irq_flags, pc);
443 * if (!event)
444 * return;
445 * entry = ring_buffer_event_data(event);
446 *
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447 * { <assign>; } <-- Here we assign the entries by the __field and
448 * __array macros.
c32e827b 449 *
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450 * if (eflags & FTRACE_EVENT_FL_TRIGGER_COND)
451 * __tt = event_triggers_call(ftrace_file, entry);
452 *
453 * if (test_bit(FTRACE_EVENT_FL_SOFT_DISABLED_BIT,
454 * &ftrace_file->flags))
455 * ring_buffer_discard_commit(buffer, event);
456 * else if (!filter_check_discard(ftrace_file, entry, buffer, event))
f306cc82 457 * trace_buffer_unlock_commit(buffer, event, irq_flags, pc);
bac5fb97
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458 *
459 * if (__tt)
460 * event_triggers_post_call(ftrace_file, __tt);
c32e827b
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461 * }
462 *
c32e827b 463 * static struct trace_event ftrace_event_type_<call> = {
ef18012b 464 * .trace = ftrace_raw_output_<call>, <-- stage 2
c32e827b
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465 * };
466 *
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467 * static const char print_fmt_<call>[] = <TP_printk>;
468 *
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469 * static struct ftrace_event_class __used event_class_<template> = {
470 * .system = "<system>",
2e33af02 471 * .define_fields = ftrace_define_fields_<call>,
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SR
472 * .fields = LIST_HEAD_INIT(event_class_##call.fields),
473 * .raw_init = trace_event_raw_init,
474 * .probe = ftrace_raw_event_##call,
a1d0ce82 475 * .reg = ftrace_event_reg,
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476 * };
477 *
e4a9ea5e 478 * static struct ftrace_event_call event_<call> = {
ef18012b 479 * .name = "<call>",
8f082018 480 * .class = event_class_<template>,
2e33af02 481 * .event = &ftrace_event_type_<call>,
50354a8a 482 * .print_fmt = print_fmt_<call>,
8f082018 483 * };
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484 * // its only safe to use pointers when doing linker tricks to
485 * // create an array.
486 * static struct ftrace_event_call __used
487 * __attribute__((section("_ftrace_events"))) *__event_<call> = &event_<call>;
c32e827b
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488 *
489 */
490
07b139c8 491#ifdef CONFIG_PERF_EVENTS
ac199db0 492
2239291a
SR
493#define _TRACE_PERF_PROTO(call, proto) \
494 static notrace void \
495 perf_trace_##call(void *__data, proto);
496
97d5a220 497#define _TRACE_PERF_INIT(call) \
2239291a 498 .perf_probe = perf_trace_##call,
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499
500#else
2239291a 501#define _TRACE_PERF_PROTO(call, proto)
97d5a220 502#define _TRACE_PERF_INIT(call)
07b139c8 503#endif /* CONFIG_PERF_EVENTS */
ac199db0 504
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505#undef __entry
506#define __entry entry
d20e3b03 507
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508#undef __field
509#define __field(type, item)
510
511#undef __array
512#define __array(type, item, len)
513
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514#undef __dynamic_array
515#define __dynamic_array(type, item, len) \
516 __entry->__data_loc_##item = __data_offsets.item;
517
9cbf1176 518#undef __string
7fcb7c47 519#define __string(item, src) __dynamic_array(char, item, -1) \
9cbf1176
FW
520
521#undef __assign_str
522#define __assign_str(dst, src) \
4e58e547 523 strcpy(__get_str(dst), (src) ? (const char *)(src) : "(null)");
9cbf1176 524
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525#undef TP_fast_assign
526#define TP_fast_assign(args...) args
527
12473965
ON
528#undef __perf_addr
529#define __perf_addr(a) (a)
530
531#undef __perf_count
532#define __perf_count(c) (c)
533
534#undef __perf_task
535#define __perf_task(t) (t)
0fa0edaf 536
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537#undef DECLARE_EVENT_CLASS
538#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
c32e827b 539 \
83f0d539 540static notrace void \
2239291a 541ftrace_raw_event_##call(void *__data, proto) \
c32e827b 542{ \
ae63b31e
SR
543 struct ftrace_event_file *ftrace_file = __data; \
544 struct ftrace_event_call *event_call = ftrace_file->event_call; \
7fcb7c47 545 struct ftrace_data_offsets_##call __maybe_unused __data_offsets;\
c32e827b
SR
546 struct ring_buffer_event *event; \
547 struct ftrace_raw_##call *entry; \
e77405ad 548 struct ring_buffer *buffer; \
c32e827b 549 unsigned long irq_flags; \
7fcb7c47 550 int __data_size; \
c32e827b
SR
551 int pc; \
552 \
13a1e4ae
SRRH
553 if (ftrace_trigger_soft_disabled(ftrace_file)) \
554 return; \
417944c4 555 \
c32e827b
SR
556 local_save_flags(irq_flags); \
557 pc = preempt_count(); \
558 \
7fcb7c47 559 __data_size = ftrace_get_offsets_##call(&__data_offsets, args); \
9cbf1176 560 \
ccb469a1 561 event = trace_event_buffer_lock_reserve(&buffer, ftrace_file, \
32c0edae 562 event_call->event.type, \
7fcb7c47 563 sizeof(*entry) + __data_size, \
9cbf1176 564 irq_flags, pc); \
c32e827b
SR
565 if (!event) \
566 return; \
567 entry = ring_buffer_event_data(event); \
568 \
7fcb7c47
LZ
569 tstruct \
570 \
a9c1c3ab 571 { assign; } \
c32e827b 572 \
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SRRH
573 event_trigger_unlock_commit(ftrace_file, buffer, event, entry, \
574 irq_flags, pc); \
ff038f5c 575}
2239291a
SR
576/*
577 * The ftrace_test_probe is compiled out, it is only here as a build time check
578 * to make sure that if the tracepoint handling changes, the ftrace probe will
579 * fail to compile unless it too is updated.
580 */
ff038f5c
SR
581
582#undef DEFINE_EVENT
583#define DEFINE_EVENT(template, call, proto, args) \
2239291a 584static inline void ftrace_test_probe_##call(void) \
c32e827b 585{ \
2239291a
SR
586 check_trace_callback_type_##call(ftrace_raw_event_##template); \
587}
e5bc9721
SR
588
589#undef DEFINE_EVENT_PRINT
80decc70 590#define DEFINE_EVENT_PRINT(template, name, proto, args, print)
e5bc9721
SR
591
592#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
593
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LJ
594#undef __entry
595#define __entry REC
596
597#undef __print_flags
598#undef __print_symbolic
b102f1d0 599#undef __print_hex
509e760c
LJ
600#undef __get_dynamic_array
601#undef __get_str
602
603#undef TP_printk
604#define TP_printk(fmt, args...) "\"" fmt "\", " __stringify(args)
605
091ad365 606#undef DECLARE_EVENT_CLASS
509e760c 607#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
2239291a 608_TRACE_PERF_PROTO(call, PARAMS(proto)); \
8f082018 609static const char print_fmt_##call[] = print; \
523c8113 610static struct ftrace_event_class __used __refdata event_class_##call = { \
2239291a 611 .system = __stringify(TRACE_SYSTEM), \
2e33af02
SR
612 .define_fields = ftrace_define_fields_##call, \
613 .fields = LIST_HEAD_INIT(event_class_##call.fields),\
0405ab80 614 .raw_init = trace_event_raw_init, \
2239291a 615 .probe = ftrace_raw_event_##call, \
a1d0ce82 616 .reg = ftrace_event_reg, \
2239291a 617 _TRACE_PERF_INIT(call) \
8f082018 618};
e5bc9721
SR
619
620#undef DEFINE_EVENT
621#define DEFINE_EVENT(template, call, proto, args) \
c32e827b 622 \
e4a9ea5e 623static struct ftrace_event_call __used event_##call = { \
ef18012b 624 .name = #call, \
8f082018 625 .class = &event_class_##template, \
80decc70 626 .event.funcs = &ftrace_event_type_funcs_##template, \
509e760c 627 .print_fmt = print_fmt_##template, \
e4a9ea5e
SR
628}; \
629static struct ftrace_event_call __used \
630__attribute__((section("_ftrace_events"))) *__event_##call = &event_##call
ac199db0 631
e5bc9721
SR
632#undef DEFINE_EVENT_PRINT
633#define DEFINE_EVENT_PRINT(template, call, proto, args, print) \
c32e827b 634 \
509e760c
LJ
635static const char print_fmt_##call[] = print; \
636 \
e4a9ea5e 637static struct ftrace_event_call __used event_##call = { \
ef18012b 638 .name = #call, \
8f082018 639 .class = &event_class_##template, \
80decc70 640 .event.funcs = &ftrace_event_type_funcs_##call, \
509e760c 641 .print_fmt = print_fmt_##call, \
e4a9ea5e
SR
642}; \
643static struct ftrace_event_call __used \
644__attribute__((section("_ftrace_events"))) *__event_##call = &event_##call
ac199db0 645
f42c85e7 646#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
ac199db0 647
f413cdb8 648
07b139c8 649#ifdef CONFIG_PERF_EVENTS
f413cdb8 650
509e760c
LJ
651#undef __entry
652#define __entry entry
653
654#undef __get_dynamic_array
655#define __get_dynamic_array(field) \
656 ((void *)__entry + (__entry->__data_loc_##field & 0xffff))
657
658#undef __get_str
659#define __get_str(field) (char *)__get_dynamic_array(field)
660
f413cdb8 661#undef __perf_addr
12473965 662#define __perf_addr(a) (__addr = (a))
f413cdb8
FW
663
664#undef __perf_count
12473965 665#define __perf_count(c) (__count = (c))
f413cdb8 666
e6dab5ff 667#undef __perf_task
12473965 668#define __perf_task(t) (__task = (t))
92e51938 669
091ad365
IM
670#undef DECLARE_EVENT_CLASS
671#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
83f0d539 672static notrace void \
2239291a 673perf_trace_##call(void *__data, proto) \
f413cdb8 674{ \
2239291a 675 struct ftrace_event_call *event_call = __data; \
f413cdb8 676 struct ftrace_data_offsets_##call __maybe_unused __data_offsets;\
f413cdb8 677 struct ftrace_raw_##call *entry; \
ff5f149b 678 struct pt_regs __regs; \
f413cdb8 679 u64 __addr = 0, __count = 1; \
e6dab5ff 680 struct task_struct *__task = NULL; \
1c024eca 681 struct hlist_head *head; \
f413cdb8
FW
682 int __entry_size; \
683 int __data_size; \
4ed7c92d 684 int rctx; \
f413cdb8
FW
685 \
686 __data_size = ftrace_get_offsets_##call(&__data_offsets, args); \
d027e6a9
ON
687 \
688 head = this_cpu_ptr(event_call->perf_events); \
689 if (__builtin_constant_p(!__task) && !__task && \
690 hlist_empty(head)) \
691 return; \
692 \
a044560c
PZ
693 __entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32),\
694 sizeof(u64)); \
304703ab 695 __entry_size -= sizeof(u32); \
f413cdb8 696 \
36009d07
ON
697 perf_fetch_caller_regs(&__regs); \
698 entry = perf_trace_buf_prepare(__entry_size, \
699 event_call->event.type, &__regs, &rctx); \
430ad5a6
XG
700 if (!entry) \
701 return; \
b7e2ecef 702 \
20ab4425
FW
703 tstruct \
704 \
705 { assign; } \
706 \
97d5a220 707 perf_trace_buf_submit(entry, __entry_size, rctx, __addr, \
e6dab5ff 708 __count, &__regs, head, __task); \
f413cdb8
FW
709}
710
2239291a
SR
711/*
712 * This part is compiled out, it is only here as a build time check
713 * to make sure that if the tracepoint handling changes, the
714 * perf probe will fail to compile unless it too is updated.
715 */
ff038f5c 716#undef DEFINE_EVENT
6cc8a7c1 717#define DEFINE_EVENT(template, call, proto, args) \
2239291a 718static inline void perf_test_probe_##call(void) \
6cc8a7c1 719{ \
2239291a 720 check_trace_callback_type_##call(perf_trace_##template); \
ff038f5c
SR
721}
722
2239291a 723
e5bc9721
SR
724#undef DEFINE_EVENT_PRINT
725#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
726 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
727
f413cdb8 728#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
07b139c8 729#endif /* CONFIG_PERF_EVENTS */
f413cdb8 730