Commit | Line | Data |
---|---|---|
f42c85e7 SR |
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 |
ff038f5c SR |
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. |
ff038f5c SR |
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, \ |
ff038f5c SR |
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 | ||
7fcb7c47 LZ |
41 | #undef __field |
42 | #define __field(type, item) type item; | |
43 | ||
43b51ead LZ |
44 | #undef __field_ext |
45 | #define __field_ext(type, item, filter_type) type item; | |
46 | ||
f42c85e7 SR |
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 | |
f42c85e7 SR |
56 | #undef TP_STRUCT__entry |
57 | #define TP_STRUCT__entry(args...) args | |
58 | ||
091ad365 IM |
59 | #undef DECLARE_EVENT_CLASS |
60 | #define DECLARE_EVENT_CLASS(name, proto, args, tstruct, assign, print) \ | |
ff038f5c SR |
61 | struct ftrace_raw_##name { \ |
62 | struct trace_entry ent; \ | |
63 | tstruct \ | |
64 | char __data[0]; \ | |
8f082018 SR |
65 | }; \ |
66 | \ | |
67 | static struct ftrace_event_class event_class_##name; | |
68 | ||
ff038f5c SR |
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 | |
f5abaa1b SR |
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 | ||
e5bc9721 SR |
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 | ||
97419875 JS |
82 | /* Callbacks are meaningless to ftrace. */ |
83 | #undef TRACE_EVENT_FN | |
0dd7b747 FW |
84 | #define TRACE_EVENT_FN(name, proto, args, tstruct, \ |
85 | assign, print, reg, unreg) \ | |
819ce45a FW |
86 | TRACE_EVENT(name, PARAMS(proto), PARAMS(args), \ |
87 | PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \ | |
97419875 | 88 | |
1ed0c597 FW |
89 | #undef TRACE_EVENT_FLAGS |
90 | #define TRACE_EVENT_FLAGS(name, value) \ | |
53cf810b | 91 | __TRACE_EVENT_FLAGS(name, value) |
1ed0c597 | 92 | |
d5b5f391 PZ |
93 | #undef TRACE_EVENT_PERF_PERM |
94 | #define TRACE_EVENT_PERF_PERM(name, expr...) \ | |
95 | __TRACE_EVENT_PERF_PERM(name, expr) | |
96 | ||
f42c85e7 SR |
97 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
98 | ||
9cbf1176 | 99 | |
f42c85e7 SR |
100 | /* |
101 | * Stage 2 of the trace events. | |
102 | * | |
9cbf1176 FW |
103 | * Include the following: |
104 | * | |
7fcb7c47 | 105 | * struct ftrace_data_offsets_<call> { |
7d536cb3 LZ |
106 | * u32 <item1>; |
107 | * u32 <item2>; | |
9cbf1176 FW |
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>. |
9cbf1176 FW |
114 | */ |
115 | ||
7fcb7c47 | 116 | #undef __field |
43b51ead LZ |
117 | #define __field(type, item) |
118 | ||
119 | #undef __field_ext | |
120 | #define __field_ext(type, item, filter_type) | |
7fcb7c47 | 121 | |
9cbf1176 FW |
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; |
9cbf1176 FW |
127 | |
128 | #undef __string | |
7fcb7c47 | 129 | #define __string(item, src) __dynamic_array(char, item, -1) |
9cbf1176 | 130 | |
091ad365 IM |
131 | #undef DECLARE_EVENT_CLASS |
132 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ | |
7fcb7c47 | 133 | struct ftrace_data_offsets_##call { \ |
9cbf1176 FW |
134 | tstruct; \ |
135 | }; | |
136 | ||
ff038f5c SR |
137 | #undef DEFINE_EVENT |
138 | #define DEFINE_EVENT(template, name, proto, args) | |
139 | ||
e5bc9721 SR |
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 | ||
1ed0c597 FW |
144 | #undef TRACE_EVENT_FLAGS |
145 | #define TRACE_EVENT_FLAGS(event, flag) | |
146 | ||
d5b5f391 PZ |
147 | #undef TRACE_EVENT_PERF_PERM |
148 | #define TRACE_EVENT_PERF_PERM(event, expr...) | |
149 | ||
9cbf1176 FW |
150 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
151 | ||
152 | /* | |
153 | * Stage 3 of the trace events. | |
154 | * | |
f42c85e7 SR |
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; |
f42c85e7 SR |
164 | * int ret; |
165 | * | |
166 | * entry = iter->ent; | |
167 | * | |
32c0edae | 168 | * if (entry->type != event_<call>->event.type) { |
f42c85e7 SR |
169 | * WARN_ON_ONCE(1); |
170 | * return TRACE_TYPE_UNHANDLED; | |
171 | * } | |
172 | * | |
173 | * field = (typeof(field))entry; | |
174 | * | |
56d8bd3f | 175 | * trace_seq_init(p); |
50354a8a LZ |
176 | * ret = trace_seq_printf(s, "%s: ", <call>); |
177 | * if (ret) | |
178 | * ret = trace_seq_printf(s, <TP_printk> "\n"); | |
f42c85e7 SR |
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 | ||
7fcb7c47 LZ |
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 | |
be74b73a SR |
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); \ |
be74b73a SR |
209 | }) |
210 | ||
0f4fc29d SR |
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 | ||
5a2e3995 KT |
232 | #undef __print_hex |
233 | #define __print_hex(buf, buf_len) ftrace_print_hex_seq(p, buf, buf_len) | |
234 | ||
091ad365 IM |
235 | #undef DECLARE_EVENT_CLASS |
236 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ | |
83f0d539 | 237 | static notrace enum print_line_t \ |
80decc70 SR |
238 | ftrace_raw_output_##call(struct trace_iterator *iter, int flags, \ |
239 | struct trace_event *trace_event) \ | |
f42c85e7 SR |
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; \ |
f42c85e7 SR |
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) \ |
f71130de LZ |
250 | return ret; \ |
251 | \ | |
252 | ret = trace_seq_printf(s, print); \ | |
f42c85e7 SR |
253 | if (!ret) \ |
254 | return TRACE_TYPE_PARTIAL_LINE; \ | |
255 | \ | |
256 | return TRACE_TYPE_HANDLED; \ | |
80decc70 SR |
257 | } \ |
258 | static struct trace_event_functions ftrace_event_type_funcs_##call = { \ | |
259 | .trace = ftrace_raw_output_##call, \ | |
260 | }; | |
ff038f5c | 261 | |
e5bc9721 SR |
262 | #undef DEFINE_EVENT_PRINT |
263 | #define DEFINE_EVENT_PRINT(template, call, proto, args, print) \ | |
83f0d539 | 264 | static notrace enum print_line_t \ |
a9a57763 SR |
265 | ftrace_raw_output_##call(struct trace_iterator *iter, int flags, \ |
266 | struct trace_event *event) \ | |
e5bc9721 | 267 | { \ |
e5bc9721 SR |
268 | struct ftrace_raw_##template *field; \ |
269 | struct trace_entry *entry; \ | |
bc289ae9 | 270 | struct trace_seq *p = &iter->tmp_seq; \ |
f42c85e7 SR |
271 | \ |
272 | entry = iter->ent; \ | |
273 | \ | |
32c0edae | 274 | if (entry->type != event_##call.event.type) { \ |
f42c85e7 SR |
275 | WARN_ON_ONCE(1); \ |
276 | return TRACE_TYPE_UNHANDLED; \ | |
277 | } \ | |
278 | \ | |
279 | field = (typeof(field))entry; \ | |
280 | \ | |
56d8bd3f | 281 | trace_seq_init(p); \ |
1d6bae96 | 282 | return ftrace_output_call(iter, #call, print); \ |
80decc70 SR |
283 | } \ |
284 | static struct trace_event_functions ftrace_event_type_funcs_##call = { \ | |
285 | .trace = ftrace_raw_output_##call, \ | |
286 | }; | |
e5bc9721 | 287 | |
f42c85e7 SR |
288 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
289 | ||
43b51ead LZ |
290 | #undef __field_ext |
291 | #define __field_ext(type, item, filter_type) \ | |
f42c85e7 SR |
292 | ret = trace_define_field(event_call, #type, #item, \ |
293 | offsetof(typeof(field), item), \ | |
43b51ead LZ |
294 | sizeof(field.item), \ |
295 | is_signed_type(type), filter_type); \ | |
f42c85e7 SR |
296 | if (ret) \ |
297 | return ret; | |
298 | ||
43b51ead LZ |
299 | #undef __field |
300 | #define __field(type, item) __field_ext(type, item, FILTER_OTHER) | |
301 | ||
f42c85e7 SR |
302 | #undef __array |
303 | #define __array(type, item, len) \ | |
04295780 | 304 | do { \ |
87291347 | 305 | char *type_str = #type"["__stringify(len)"]"; \ |
04295780 | 306 | BUILD_BUG_ON(len > MAX_FILTER_STR_VAL); \ |
87291347 | 307 | ret = trace_define_field(event_call, type_str, #item, \ |
f42c85e7 | 308 | offsetof(typeof(field), item), \ |
fb7ae981 LJ |
309 | sizeof(field.item), \ |
310 | is_signed_type(type), FILTER_OTHER); \ | |
04295780 SR |
311 | if (ret) \ |
312 | return ret; \ | |
313 | } while (0); | |
f42c85e7 | 314 | |
7fcb7c47 LZ |
315 | #undef __dynamic_array |
316 | #define __dynamic_array(type, item, len) \ | |
68fd60a8 | 317 | ret = trace_define_field(event_call, "__data_loc " #type "[]", #item, \ |
43b51ead | 318 | offsetof(typeof(field), __data_loc_##item), \ |
fb7ae981 LJ |
319 | sizeof(field.__data_loc_##item), \ |
320 | is_signed_type(type), FILTER_OTHER); | |
7fcb7c47 | 321 | |
9cbf1176 | 322 | #undef __string |
7fcb7c47 | 323 | #define __string(item, src) __dynamic_array(char, item, -1) |
9cbf1176 | 324 | |
091ad365 IM |
325 | #undef DECLARE_EVENT_CLASS |
326 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, func, print) \ | |
7e4f44b1 | 327 | static int notrace __init \ |
14be96c9 | 328 | ftrace_define_fields_##call(struct ftrace_event_call *event_call) \ |
f42c85e7 SR |
329 | { \ |
330 | struct ftrace_raw_##call field; \ | |
f42c85e7 SR |
331 | int ret; \ |
332 | \ | |
f42c85e7 SR |
333 | tstruct; \ |
334 | \ | |
335 | return ret; \ | |
336 | } | |
337 | ||
ff038f5c SR |
338 | #undef DEFINE_EVENT |
339 | #define DEFINE_EVENT(template, name, proto, args) | |
340 | ||
e5bc9721 SR |
341 | #undef DEFINE_EVENT_PRINT |
342 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ | |
343 | DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) | |
344 | ||
f42c85e7 SR |
345 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
346 | ||
7fcb7c47 LZ |
347 | /* |
348 | * remember the offset of each array from the beginning of the event. | |
349 | */ | |
350 | ||
351 | #undef __entry | |
352 | #define __entry entry | |
353 | ||
354 | #undef __field | |
355 | #define __field(type, item) | |
356 | ||
43b51ead LZ |
357 | #undef __field_ext |
358 | #define __field_ext(type, item, filter_type) | |
359 | ||
7fcb7c47 LZ |
360 | #undef __array |
361 | #define __array(type, item, len) | |
362 | ||
363 | #undef __dynamic_array | |
364 | #define __dynamic_array(type, item, len) \ | |
114e7b52 | 365 | __item_length = (len) * sizeof(type); \ |
7fcb7c47 LZ |
366 | __data_offsets->item = __data_size + \ |
367 | offsetof(typeof(*entry), __data); \ | |
114e7b52 FB |
368 | __data_offsets->item |= __item_length << 16; \ |
369 | __data_size += __item_length; | |
7fcb7c47 LZ |
370 | |
371 | #undef __string | |
4e58e547 SRRH |
372 | #define __string(item, src) __dynamic_array(char, item, \ |
373 | strlen((src) ? (const char *)(src) : "(null)") + 1) | |
7fcb7c47 | 374 | |
091ad365 IM |
375 | #undef DECLARE_EVENT_CLASS |
376 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ | |
83f0d539 | 377 | static inline notrace int ftrace_get_offsets_##call( \ |
7fcb7c47 LZ |
378 | struct ftrace_data_offsets_##call *__data_offsets, proto) \ |
379 | { \ | |
380 | int __data_size = 0; \ | |
114e7b52 | 381 | int __maybe_unused __item_length; \ |
7fcb7c47 LZ |
382 | struct ftrace_raw_##call __maybe_unused *entry; \ |
383 | \ | |
384 | tstruct; \ | |
385 | \ | |
386 | return __data_size; \ | |
387 | } | |
388 | ||
ff038f5c SR |
389 | #undef DEFINE_EVENT |
390 | #define DEFINE_EVENT(template, name, proto, args) | |
391 | ||
e5bc9721 SR |
392 | #undef DEFINE_EVENT_PRINT |
393 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ | |
394 | DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) | |
395 | ||
7fcb7c47 LZ |
396 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
397 | ||
c32e827b | 398 | /* |
9cbf1176 | 399 | * Stage 4 of the trace events. |
c32e827b | 400 | * |
ea20d929 | 401 | * Override the macros in <trace/trace_events.h> to include the following: |
c32e827b | 402 | * |
157587d7 | 403 | * For those macros defined with TRACE_EVENT: |
c32e827b SR |
404 | * |
405 | * static struct ftrace_event_call event_<call>; | |
406 | * | |
2239291a | 407 | * static void ftrace_raw_event_<call>(void *__data, proto) |
c32e827b | 408 | * { |
ccb469a1 SR |
409 | * struct ftrace_event_file *ftrace_file = __data; |
410 | * struct ftrace_event_call *event_call = ftrace_file->event_call; | |
50354a8a | 411 | * struct ftrace_data_offsets_<call> __maybe_unused __data_offsets; |
bac5fb97 TZ |
412 | * unsigned long eflags = ftrace_file->flags; |
413 | * enum event_trigger_type __tt = ETT_NONE; | |
ef18012b SR |
414 | * struct ring_buffer_event *event; |
415 | * struct ftrace_raw_<call> *entry; <-- defined in stage 1 | |
e77405ad | 416 | * struct ring_buffer *buffer; |
ef18012b | 417 | * unsigned long irq_flags; |
50354a8a | 418 | * int __data_size; |
ef18012b SR |
419 | * int pc; |
420 | * | |
bac5fb97 TZ |
421 | * if (!(eflags & FTRACE_EVENT_FL_TRIGGER_COND)) { |
422 | * if (eflags & FTRACE_EVENT_FL_TRIGGER_MODE) | |
423 | * event_triggers_call(ftrace_file, NULL); | |
424 | * if (eflags & FTRACE_EVENT_FL_SOFT_DISABLED) | |
425 | * return; | |
426 | * } | |
417944c4 | 427 | * |
ef18012b SR |
428 | * local_save_flags(irq_flags); |
429 | * pc = preempt_count(); | |
430 | * | |
50354a8a LZ |
431 | * __data_size = ftrace_get_offsets_<call>(&__data_offsets, args); |
432 | * | |
ccb469a1 | 433 | * event = trace_event_buffer_lock_reserve(&buffer, ftrace_file, |
32c0edae | 434 | * event_<call>->event.type, |
50354a8a | 435 | * sizeof(*entry) + __data_size, |
ef18012b SR |
436 | * irq_flags, pc); |
437 | * if (!event) | |
438 | * return; | |
439 | * entry = ring_buffer_event_data(event); | |
440 | * | |
50354a8a LZ |
441 | * { <assign>; } <-- Here we assign the entries by the __field and |
442 | * __array macros. | |
c32e827b | 443 | * |
bac5fb97 TZ |
444 | * if (eflags & FTRACE_EVENT_FL_TRIGGER_COND) |
445 | * __tt = event_triggers_call(ftrace_file, entry); | |
446 | * | |
447 | * if (test_bit(FTRACE_EVENT_FL_SOFT_DISABLED_BIT, | |
448 | * &ftrace_file->flags)) | |
449 | * ring_buffer_discard_commit(buffer, event); | |
450 | * else if (!filter_check_discard(ftrace_file, entry, buffer, event)) | |
f306cc82 | 451 | * trace_buffer_unlock_commit(buffer, event, irq_flags, pc); |
bac5fb97 TZ |
452 | * |
453 | * if (__tt) | |
454 | * event_triggers_post_call(ftrace_file, __tt); | |
c32e827b SR |
455 | * } |
456 | * | |
c32e827b | 457 | * static struct trace_event ftrace_event_type_<call> = { |
ef18012b | 458 | * .trace = ftrace_raw_output_<call>, <-- stage 2 |
c32e827b SR |
459 | * }; |
460 | * | |
50354a8a LZ |
461 | * static const char print_fmt_<call>[] = <TP_printk>; |
462 | * | |
8f082018 SR |
463 | * static struct ftrace_event_class __used event_class_<template> = { |
464 | * .system = "<system>", | |
2e33af02 | 465 | * .define_fields = ftrace_define_fields_<call>, |
0405ab80 SR |
466 | * .fields = LIST_HEAD_INIT(event_class_##call.fields), |
467 | * .raw_init = trace_event_raw_init, | |
468 | * .probe = ftrace_raw_event_##call, | |
a1d0ce82 | 469 | * .reg = ftrace_event_reg, |
8f082018 SR |
470 | * }; |
471 | * | |
e4a9ea5e | 472 | * static struct ftrace_event_call event_<call> = { |
8f082018 | 473 | * .class = event_class_<template>, |
abb43f69 MD |
474 | * { |
475 | * .tp = &__tracepoint_<call>, | |
476 | * }, | |
2e33af02 | 477 | * .event = &ftrace_event_type_<call>, |
50354a8a | 478 | * .print_fmt = print_fmt_<call>, |
de7b2973 | 479 | * .flags = TRACE_EVENT_FL_TRACEPOINT, |
8f082018 | 480 | * }; |
e4a9ea5e SR |
481 | * // its only safe to use pointers when doing linker tricks to |
482 | * // create an array. | |
483 | * static struct ftrace_event_call __used | |
484 | * __attribute__((section("_ftrace_events"))) *__event_<call> = &event_<call>; | |
c32e827b SR |
485 | * |
486 | */ | |
487 | ||
07b139c8 | 488 | #ifdef CONFIG_PERF_EVENTS |
ac199db0 | 489 | |
2239291a SR |
490 | #define _TRACE_PERF_PROTO(call, proto) \ |
491 | static notrace void \ | |
492 | perf_trace_##call(void *__data, proto); | |
493 | ||
97d5a220 | 494 | #define _TRACE_PERF_INIT(call) \ |
2239291a | 495 | .perf_probe = perf_trace_##call, |
ac199db0 PZ |
496 | |
497 | #else | |
2239291a | 498 | #define _TRACE_PERF_PROTO(call, proto) |
97d5a220 | 499 | #define _TRACE_PERF_INIT(call) |
07b139c8 | 500 | #endif /* CONFIG_PERF_EVENTS */ |
ac199db0 | 501 | |
da4d0302 SR |
502 | #undef __entry |
503 | #define __entry entry | |
d20e3b03 | 504 | |
9cbf1176 FW |
505 | #undef __field |
506 | #define __field(type, item) | |
507 | ||
508 | #undef __array | |
509 | #define __array(type, item, len) | |
510 | ||
7fcb7c47 LZ |
511 | #undef __dynamic_array |
512 | #define __dynamic_array(type, item, len) \ | |
513 | __entry->__data_loc_##item = __data_offsets.item; | |
514 | ||
9cbf1176 | 515 | #undef __string |
7fcb7c47 | 516 | #define __string(item, src) __dynamic_array(char, item, -1) \ |
9cbf1176 FW |
517 | |
518 | #undef __assign_str | |
519 | #define __assign_str(dst, src) \ | |
4e58e547 | 520 | strcpy(__get_str(dst), (src) ? (const char *)(src) : "(null)"); |
9cbf1176 | 521 | |
0fa0edaf LJ |
522 | #undef TP_fast_assign |
523 | #define TP_fast_assign(args...) args | |
524 | ||
12473965 ON |
525 | #undef __perf_addr |
526 | #define __perf_addr(a) (a) | |
527 | ||
528 | #undef __perf_count | |
529 | #define __perf_count(c) (c) | |
530 | ||
531 | #undef __perf_task | |
532 | #define __perf_task(t) (t) | |
0fa0edaf | 533 | |
091ad365 IM |
534 | #undef DECLARE_EVENT_CLASS |
535 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ | |
c32e827b | 536 | \ |
83f0d539 | 537 | static notrace void \ |
2239291a | 538 | ftrace_raw_event_##call(void *__data, proto) \ |
c32e827b | 539 | { \ |
ae63b31e | 540 | struct ftrace_event_file *ftrace_file = __data; \ |
7fcb7c47 | 541 | struct ftrace_data_offsets_##call __maybe_unused __data_offsets;\ |
3fd40d1e | 542 | struct ftrace_event_buffer fbuffer; \ |
c32e827b | 543 | struct ftrace_raw_##call *entry; \ |
7fcb7c47 | 544 | int __data_size; \ |
c32e827b | 545 | \ |
13a1e4ae SRRH |
546 | if (ftrace_trigger_soft_disabled(ftrace_file)) \ |
547 | return; \ | |
417944c4 | 548 | \ |
7fcb7c47 | 549 | __data_size = ftrace_get_offsets_##call(&__data_offsets, args); \ |
9cbf1176 | 550 | \ |
3fd40d1e SR |
551 | entry = ftrace_event_buffer_reserve(&fbuffer, ftrace_file, \ |
552 | sizeof(*entry) + __data_size); \ | |
553 | \ | |
554 | if (!entry) \ | |
c32e827b | 555 | return; \ |
c32e827b | 556 | \ |
7fcb7c47 LZ |
557 | tstruct \ |
558 | \ | |
a9c1c3ab | 559 | { assign; } \ |
c32e827b | 560 | \ |
3fd40d1e | 561 | ftrace_event_buffer_commit(&fbuffer); \ |
ff038f5c | 562 | } |
2239291a SR |
563 | /* |
564 | * The ftrace_test_probe is compiled out, it is only here as a build time check | |
565 | * to make sure that if the tracepoint handling changes, the ftrace probe will | |
566 | * fail to compile unless it too is updated. | |
567 | */ | |
ff038f5c SR |
568 | |
569 | #undef DEFINE_EVENT | |
570 | #define DEFINE_EVENT(template, call, proto, args) \ | |
2239291a | 571 | static inline void ftrace_test_probe_##call(void) \ |
c32e827b | 572 | { \ |
2239291a SR |
573 | check_trace_callback_type_##call(ftrace_raw_event_##template); \ |
574 | } | |
e5bc9721 SR |
575 | |
576 | #undef DEFINE_EVENT_PRINT | |
80decc70 | 577 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) |
e5bc9721 SR |
578 | |
579 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | |
580 | ||
509e760c LJ |
581 | #undef __entry |
582 | #define __entry REC | |
583 | ||
584 | #undef __print_flags | |
585 | #undef __print_symbolic | |
b102f1d0 | 586 | #undef __print_hex |
509e760c LJ |
587 | #undef __get_dynamic_array |
588 | #undef __get_str | |
589 | ||
590 | #undef TP_printk | |
591 | #define TP_printk(fmt, args...) "\"" fmt "\", " __stringify(args) | |
592 | ||
091ad365 | 593 | #undef DECLARE_EVENT_CLASS |
509e760c | 594 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ |
2239291a | 595 | _TRACE_PERF_PROTO(call, PARAMS(proto)); \ |
8f082018 | 596 | static const char print_fmt_##call[] = print; \ |
523c8113 | 597 | static struct ftrace_event_class __used __refdata event_class_##call = { \ |
2239291a | 598 | .system = __stringify(TRACE_SYSTEM), \ |
2e33af02 SR |
599 | .define_fields = ftrace_define_fields_##call, \ |
600 | .fields = LIST_HEAD_INIT(event_class_##call.fields),\ | |
0405ab80 | 601 | .raw_init = trace_event_raw_init, \ |
2239291a | 602 | .probe = ftrace_raw_event_##call, \ |
a1d0ce82 | 603 | .reg = ftrace_event_reg, \ |
2239291a | 604 | _TRACE_PERF_INIT(call) \ |
8f082018 | 605 | }; |
e5bc9721 SR |
606 | |
607 | #undef DEFINE_EVENT | |
608 | #define DEFINE_EVENT(template, call, proto, args) \ | |
c32e827b | 609 | \ |
e4a9ea5e | 610 | static struct ftrace_event_call __used event_##call = { \ |
8f082018 | 611 | .class = &event_class_##template, \ |
abb43f69 MD |
612 | { \ |
613 | .tp = &__tracepoint_##call, \ | |
614 | }, \ | |
80decc70 | 615 | .event.funcs = &ftrace_event_type_funcs_##template, \ |
509e760c | 616 | .print_fmt = print_fmt_##template, \ |
de7b2973 | 617 | .flags = TRACE_EVENT_FL_TRACEPOINT, \ |
e4a9ea5e SR |
618 | }; \ |
619 | static struct ftrace_event_call __used \ | |
620 | __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call | |
ac199db0 | 621 | |
e5bc9721 SR |
622 | #undef DEFINE_EVENT_PRINT |
623 | #define DEFINE_EVENT_PRINT(template, call, proto, args, print) \ | |
c32e827b | 624 | \ |
509e760c LJ |
625 | static const char print_fmt_##call[] = print; \ |
626 | \ | |
e4a9ea5e | 627 | static struct ftrace_event_call __used event_##call = { \ |
8f082018 | 628 | .class = &event_class_##template, \ |
abb43f69 MD |
629 | { \ |
630 | .tp = &__tracepoint_##call, \ | |
631 | }, \ | |
80decc70 | 632 | .event.funcs = &ftrace_event_type_funcs_##call, \ |
509e760c | 633 | .print_fmt = print_fmt_##call, \ |
de7b2973 | 634 | .flags = TRACE_EVENT_FL_TRACEPOINT, \ |
e4a9ea5e SR |
635 | }; \ |
636 | static struct ftrace_event_call __used \ | |
637 | __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call | |
ac199db0 | 638 | |
f42c85e7 | 639 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
ac199db0 | 640 | |
f413cdb8 | 641 | |
07b139c8 | 642 | #ifdef CONFIG_PERF_EVENTS |
f413cdb8 | 643 | |
509e760c LJ |
644 | #undef __entry |
645 | #define __entry entry | |
646 | ||
647 | #undef __get_dynamic_array | |
648 | #define __get_dynamic_array(field) \ | |
649 | ((void *)__entry + (__entry->__data_loc_##field & 0xffff)) | |
650 | ||
651 | #undef __get_str | |
652 | #define __get_str(field) (char *)__get_dynamic_array(field) | |
653 | ||
f413cdb8 | 654 | #undef __perf_addr |
12473965 | 655 | #define __perf_addr(a) (__addr = (a)) |
f413cdb8 FW |
656 | |
657 | #undef __perf_count | |
12473965 | 658 | #define __perf_count(c) (__count = (c)) |
f413cdb8 | 659 | |
e6dab5ff | 660 | #undef __perf_task |
12473965 | 661 | #define __perf_task(t) (__task = (t)) |
92e51938 | 662 | |
091ad365 IM |
663 | #undef DECLARE_EVENT_CLASS |
664 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ | |
83f0d539 | 665 | static notrace void \ |
2239291a | 666 | perf_trace_##call(void *__data, proto) \ |
f413cdb8 | 667 | { \ |
2239291a | 668 | struct ftrace_event_call *event_call = __data; \ |
f413cdb8 | 669 | struct ftrace_data_offsets_##call __maybe_unused __data_offsets;\ |
f413cdb8 | 670 | struct ftrace_raw_##call *entry; \ |
ff5f149b | 671 | struct pt_regs __regs; \ |
f413cdb8 | 672 | u64 __addr = 0, __count = 1; \ |
e6dab5ff | 673 | struct task_struct *__task = NULL; \ |
1c024eca | 674 | struct hlist_head *head; \ |
f413cdb8 FW |
675 | int __entry_size; \ |
676 | int __data_size; \ | |
4ed7c92d | 677 | int rctx; \ |
f413cdb8 FW |
678 | \ |
679 | __data_size = ftrace_get_offsets_##call(&__data_offsets, args); \ | |
d027e6a9 ON |
680 | \ |
681 | head = this_cpu_ptr(event_call->perf_events); \ | |
682 | if (__builtin_constant_p(!__task) && !__task && \ | |
683 | hlist_empty(head)) \ | |
684 | return; \ | |
685 | \ | |
a044560c PZ |
686 | __entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32),\ |
687 | sizeof(u64)); \ | |
304703ab | 688 | __entry_size -= sizeof(u32); \ |
f413cdb8 | 689 | \ |
36009d07 ON |
690 | perf_fetch_caller_regs(&__regs); \ |
691 | entry = perf_trace_buf_prepare(__entry_size, \ | |
692 | event_call->event.type, &__regs, &rctx); \ | |
430ad5a6 XG |
693 | if (!entry) \ |
694 | return; \ | |
b7e2ecef | 695 | \ |
20ab4425 FW |
696 | tstruct \ |
697 | \ | |
698 | { assign; } \ | |
699 | \ | |
97d5a220 | 700 | perf_trace_buf_submit(entry, __entry_size, rctx, __addr, \ |
e6dab5ff | 701 | __count, &__regs, head, __task); \ |
f413cdb8 FW |
702 | } |
703 | ||
2239291a SR |
704 | /* |
705 | * This part is compiled out, it is only here as a build time check | |
706 | * to make sure that if the tracepoint handling changes, the | |
707 | * perf probe will fail to compile unless it too is updated. | |
708 | */ | |
ff038f5c | 709 | #undef DEFINE_EVENT |
6cc8a7c1 | 710 | #define DEFINE_EVENT(template, call, proto, args) \ |
2239291a | 711 | static inline void perf_test_probe_##call(void) \ |
6cc8a7c1 | 712 | { \ |
2239291a | 713 | check_trace_callback_type_##call(perf_trace_##template); \ |
ff038f5c SR |
714 | } |
715 | ||
2239291a | 716 | |
e5bc9721 SR |
717 | #undef DEFINE_EVENT_PRINT |
718 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ | |
719 | DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) | |
720 | ||
f413cdb8 | 721 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
07b139c8 | 722 | #endif /* CONFIG_PERF_EVENTS */ |
f413cdb8 | 723 |