blob: 41bf65f04dd9e501fa4e3066402232553a19fef4 [file] [log] [blame]
Steven Rostedtf42c85e2009-04-13 12:25:37 -04001/*
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
Steven Rostedtff038f52009-11-18 20:27:27 -050021/*
Ingo Molnar091ad362009-11-26 09:04:55 +010022 * DECLARE_EVENT_CLASS can be used to add a generic function
Steven Rostedtff038f52009-11-18 20:27:27 -050023 * 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
Ingo Molnar091ad362009-11-26 09:04:55 +010026 * will map the DECLARE_EVENT_CLASS to the tracepoint.
Steven Rostedtff038f52009-11-18 20:27:27 -050027 *
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) \
Ingo Molnar091ad362009-11-26 09:04:55 +010032 DECLARE_EVENT_CLASS(name, \
Steven Rostedtff038f52009-11-18 20:27:27 -050033 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
Steven Rostedtf42c85e2009-04-13 12:25:37 -040041#undef __field
42#define __field(type, item) type item;
43
Li Zefan43b51ea2009-08-07 10:33:22 +080044#undef __field_ext
45#define __field_ext(type, item, filter_type) type item;
46
Steven Rostedt4d4c9cc2014-06-17 08:59:16 -040047#undef __field_struct
48#define __field_struct(type, item) type item;
49
50#undef __field_struct_ext
51#define __field_struct_ext(type, item, filter_type) type item;
52
Li Zefan7fcb7c42009-06-01 15:35:46 +080053#undef __array
54#define __array(type, item, len) type item[len];
55
56#undef __dynamic_array
Li Zefan7d536cb2009-07-16 10:54:02 +080057#define __dynamic_array(type, item, len) u32 __data_loc_##item;
Li Zefan7fcb7c42009-06-01 15:35:46 +080058
Frederic Weisbecker9cbf1172009-04-19 04:51:29 +020059#undef __string
Li Zefan7fcb7c42009-06-01 15:35:46 +080060#define __string(item, src) __dynamic_array(char, item, -1)
Frederic Weisbecker9cbf1172009-04-19 04:51:29 +020061
Steven Rostedt (Red Hat)4449bf92014-05-06 13:10:24 -040062#undef __bitmask
63#define __bitmask(item, nr_bits) __dynamic_array(char, item, -1)
64
Steven Rostedtf42c85e2009-04-13 12:25:37 -040065#undef TP_STRUCT__entry
66#define TP_STRUCT__entry(args...) args
67
Ingo Molnar091ad362009-11-26 09:04:55 +010068#undef DECLARE_EVENT_CLASS
69#define DECLARE_EVENT_CLASS(name, proto, args, tstruct, assign, print) \
Steven Rostedtff038f52009-11-18 20:27:27 -050070 struct ftrace_raw_##name { \
71 struct trace_entry ent; \
72 tstruct \
73 char __data[0]; \
Steven Rostedt8f082012010-04-20 10:47:33 -040074 }; \
75 \
76 static struct ftrace_event_class event_class_##name;
77
Steven Rostedtff038f52009-11-18 20:27:27 -050078#undef DEFINE_EVENT
79#define DEFINE_EVENT(template, name, proto, args) \
Steven Rostedt49c17742010-05-25 06:19:35 -070080 static struct ftrace_event_call __used \
Jeff Mahoney86c38a32010-02-24 13:59:23 -050081 __attribute__((__aligned__(4))) event_##name
Steven Rostedtf42c85e2009-04-13 12:25:37 -040082
Steven Rostedtf5abaa12013-06-20 11:44:44 -040083#undef DEFINE_EVENT_FN
84#define DEFINE_EVENT_FN(template, name, proto, args, reg, unreg) \
85 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
86
Steven Rostedte5bc9722009-11-18 20:36:26 -050087#undef DEFINE_EVENT_PRINT
88#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
89 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
90
Josh Stone97419872009-08-24 14:43:13 -070091/* Callbacks are meaningless to ftrace. */
92#undef TRACE_EVENT_FN
Frederic Weisbecker0dd7b742009-08-28 00:50:06 +020093#define TRACE_EVENT_FN(name, proto, args, tstruct, \
94 assign, print, reg, unreg) \
Frederic Weisbecker819ce452010-07-20 18:41:24 +020095 TRACE_EVENT(name, PARAMS(proto), PARAMS(args), \
96 PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \
Josh Stone97419872009-08-24 14:43:13 -070097
Frederic Weisbecker1ed0c592010-11-18 01:46:57 +010098#undef TRACE_EVENT_FLAGS
99#define TRACE_EVENT_FLAGS(name, value) \
Frederic Weisbecker53cf810b2010-11-18 02:11:42 +0100100 __TRACE_EVENT_FLAGS(name, value)
Frederic Weisbecker1ed0c592010-11-18 01:46:57 +0100101
Peter Zijlstrad5b5f392013-11-14 16:23:04 +0100102#undef TRACE_EVENT_PERF_PERM
103#define TRACE_EVENT_PERF_PERM(name, expr...) \
104 __TRACE_EVENT_PERF_PERM(name, expr)
105
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400106#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
107
Frederic Weisbecker9cbf1172009-04-19 04:51:29 +0200108
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400109/*
110 * Stage 2 of the trace events.
111 *
Frederic Weisbecker9cbf1172009-04-19 04:51:29 +0200112 * Include the following:
113 *
Li Zefan7fcb7c42009-06-01 15:35:46 +0800114 * struct ftrace_data_offsets_<call> {
Li Zefan7d536cb2009-07-16 10:54:02 +0800115 * u32 <item1>;
116 * u32 <item2>;
Frederic Weisbecker9cbf1172009-04-19 04:51:29 +0200117 * [...]
118 * };
119 *
Li Zefan7d536cb2009-07-16 10:54:02 +0800120 * The __dynamic_array() macro will create each u32 <item>, this is
Li Zefan7fcb7c42009-06-01 15:35:46 +0800121 * to keep the offset of each array from the beginning of the event.
Li Zefan7d536cb2009-07-16 10:54:02 +0800122 * The size of an array is also encoded, in the higher 16 bits of <item>.
Frederic Weisbecker9cbf1172009-04-19 04:51:29 +0200123 */
124
Frederic Weisbecker9cbf1172009-04-19 04:51:29 +0200125#undef __field
Li Zefan43b51ea2009-08-07 10:33:22 +0800126#define __field(type, item)
127
128#undef __field_ext
129#define __field_ext(type, item, filter_type)
Frederic Weisbecker9cbf1172009-04-19 04:51:29 +0200130
Steven Rostedt4d4c9cc2014-06-17 08:59:16 -0400131#undef __field_struct
132#define __field_struct(type, item)
133
134#undef __field_struct_ext
135#define __field_struct_ext(type, item, filter_type)
136
Li Zefan7fcb7c42009-06-01 15:35:46 +0800137#undef __array
138#define __array(type, item, len)
139
140#undef __dynamic_array
Li Zefan7d536cb2009-07-16 10:54:02 +0800141#define __dynamic_array(type, item, len) u32 item;
Li Zefan7fcb7c42009-06-01 15:35:46 +0800142
Frederic Weisbecker9cbf1172009-04-19 04:51:29 +0200143#undef __string
Li Zefan7fcb7c42009-06-01 15:35:46 +0800144#define __string(item, src) __dynamic_array(char, item, -1)
Frederic Weisbecker9cbf1172009-04-19 04:51:29 +0200145
Steven Rostedt (Red Hat)4449bf92014-05-06 13:10:24 -0400146#undef __bitmask
147#define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1)
148
Ingo Molnar091ad362009-11-26 09:04:55 +0100149#undef DECLARE_EVENT_CLASS
150#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
Li Zefan7fcb7c42009-06-01 15:35:46 +0800151 struct ftrace_data_offsets_##call { \
Frederic Weisbecker9cbf1172009-04-19 04:51:29 +0200152 tstruct; \
153 };
154
Steven Rostedtff038f52009-11-18 20:27:27 -0500155#undef DEFINE_EVENT
156#define DEFINE_EVENT(template, name, proto, args)
157
Steven Rostedte5bc9722009-11-18 20:36:26 -0500158#undef DEFINE_EVENT_PRINT
159#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
160 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
161
Frederic Weisbecker1ed0c592010-11-18 01:46:57 +0100162#undef TRACE_EVENT_FLAGS
163#define TRACE_EVENT_FLAGS(event, flag)
164
Peter Zijlstrad5b5f392013-11-14 16:23:04 +0100165#undef TRACE_EVENT_PERF_PERM
166#define TRACE_EVENT_PERF_PERM(event, expr...)
167
Frederic Weisbecker9cbf1172009-04-19 04:51:29 +0200168#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
169
170/*
171 * Stage 3 of the trace events.
172 *
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400173 * Override the macros in <trace/trace_events.h> to include the following:
174 *
175 * enum print_line_t
176 * ftrace_raw_output_<call>(struct trace_iterator *iter, int flags)
177 * {
178 * struct trace_seq *s = &iter->seq;
179 * struct ftrace_raw_<call> *field; <-- defined in stage 1
180 * struct trace_entry *entry;
Lai Jiangshanbc289ae2010-06-03 18:26:24 +0800181 * struct trace_seq *p = &iter->tmp_seq;
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400182 * int ret;
183 *
184 * entry = iter->ent;
185 *
Steven Rostedt32c0eda2010-04-23 10:38:03 -0400186 * if (entry->type != event_<call>->event.type) {
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400187 * WARN_ON_ONCE(1);
188 * return TRACE_TYPE_UNHANDLED;
189 * }
190 *
191 * field = (typeof(field))entry;
192 *
Steven Whitehouse56d8bd32009-06-03 14:52:03 +0100193 * trace_seq_init(p);
Li Zefan50354a82010-03-24 10:58:24 +0800194 * ret = trace_seq_printf(s, "%s: ", <call>);
195 * if (ret)
196 * ret = trace_seq_printf(s, <TP_printk> "\n");
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400197 * if (!ret)
198 * return TRACE_TYPE_PARTIAL_LINE;
199 *
200 * return TRACE_TYPE_HANDLED;
201 * }
202 *
203 * This is the method used to print the raw event to the trace
204 * output format. Note, this is not needed if the data is read
205 * in binary.
206 */
207
208#undef __entry
209#define __entry field
210
211#undef TP_printk
212#define TP_printk(fmt, args...) fmt "\n", args
213
Li Zefan7fcb7c42009-06-01 15:35:46 +0800214#undef __get_dynamic_array
215#define __get_dynamic_array(field) \
Li Zefan7d536cb2009-07-16 10:54:02 +0800216 ((void *)__entry + (__entry->__data_loc_##field & 0xffff))
Li Zefan7fcb7c42009-06-01 15:35:46 +0800217
Steven Rostedt (Red Hat)beba4bb2014-06-04 14:29:33 -0400218#undef __get_dynamic_array_len
219#define __get_dynamic_array_len(field) \
220 ((__entry->__data_loc_##field >> 16) & 0xffff)
221
Frederic Weisbecker9cbf1172009-04-19 04:51:29 +0200222#undef __get_str
Li Zefan7fcb7c42009-06-01 15:35:46 +0800223#define __get_str(field) (char *)__get_dynamic_array(field)
Frederic Weisbecker9cbf1172009-04-19 04:51:29 +0200224
Steven Rostedt (Red Hat)4449bf92014-05-06 13:10:24 -0400225#undef __get_bitmask
226#define __get_bitmask(field) \
227 ({ \
228 void *__bitmask = __get_dynamic_array(field); \
229 unsigned int __bitmask_size; \
Steven Rostedt (Red Hat)beba4bb2014-06-04 14:29:33 -0400230 __bitmask_size = __get_dynamic_array_len(field); \
Steven Rostedt (Red Hat)4449bf92014-05-06 13:10:24 -0400231 ftrace_print_bitmask_seq(p, __bitmask, __bitmask_size); \
232 })
233
Steven Rostedtbe74b732009-05-26 20:25:22 +0200234#undef __print_flags
235#define __print_flags(flag, delim, flag_array...) \
236 ({ \
Steven Rostedta48f4942009-09-14 11:18:02 -0400237 static const struct trace_print_flags __flags[] = \
Steven Rostedtbe74b732009-05-26 20:25:22 +0200238 { flag_array, { -1, NULL }}; \
Steven Rostedta48f4942009-09-14 11:18:02 -0400239 ftrace_print_flags_seq(p, delim, flag, __flags); \
Steven Rostedtbe74b732009-05-26 20:25:22 +0200240 })
241
Steven Rostedt0f4fc292009-05-20 19:21:47 -0400242#undef __print_symbolic
243#define __print_symbolic(value, symbol_array...) \
244 ({ \
245 static const struct trace_print_flags symbols[] = \
246 { symbol_array, { -1, NULL }}; \
247 ftrace_print_symbols_seq(p, value, symbols); \
248 })
249
liubo2fc1b6f2011-04-19 09:35:28 +0800250#undef __print_symbolic_u64
251#if BITS_PER_LONG == 32
252#define __print_symbolic_u64(value, symbol_array...) \
253 ({ \
254 static const struct trace_print_flags_u64 symbols[] = \
255 { symbol_array, { -1, NULL } }; \
256 ftrace_print_symbols_seq_u64(p, value, symbols); \
257 })
258#else
259#define __print_symbolic_u64(value, symbol_array...) \
260 __print_symbolic(value, symbol_array)
261#endif
262
Kei Tokunaga5a2e3992010-04-01 20:40:58 +0900263#undef __print_hex
264#define __print_hex(buf, buf_len) ftrace_print_hex_seq(p, buf, buf_len)
265
Dave Martin6ea22482015-01-28 12:48:53 +0000266#undef __print_array
267#define __print_array(array, count, el_size) \
268 ({ \
269 BUILD_BUG_ON(el_size != 1 && el_size != 2 && \
270 el_size != 4 && el_size != 8); \
271 ftrace_print_array_seq(p, array, count, el_size); \
272 })
273
Ingo Molnar091ad362009-11-26 09:04:55 +0100274#undef DECLARE_EVENT_CLASS
275#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
Steven Rostedt83f0d532010-02-16 10:38:47 -0500276static notrace enum print_line_t \
Steven Rostedt80decc72010-04-23 10:00:22 -0400277ftrace_raw_output_##call(struct trace_iterator *iter, int flags, \
278 struct trace_event *trace_event) \
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400279{ \
280 struct trace_seq *s = &iter->seq; \
Li Zefanf71130d2013-02-21 10:32:38 +0800281 struct trace_seq __maybe_unused *p = &iter->tmp_seq; \
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400282 struct ftrace_raw_##call *field; \
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400283 int ret; \
284 \
Li Zefanf71130d2013-02-21 10:32:38 +0800285 field = (typeof(field))iter->ent; \
Steven Rostedt80decc72010-04-23 10:00:22 -0400286 \
Li Zefanf71130d2013-02-21 10:32:38 +0800287 ret = ftrace_raw_output_prep(iter, trace_event); \
Steven Rostedt (Red Hat)8e2e0952014-11-14 11:42:06 -0500288 if (ret != TRACE_TYPE_HANDLED) \
Li Zefanf71130d2013-02-21 10:32:38 +0800289 return ret; \
290 \
Steven Rostedt (Red Hat)19a7fe22014-11-12 10:29:54 -0500291 trace_seq_printf(s, print); \
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400292 \
Steven Rostedt (Red Hat)19a7fe22014-11-12 10:29:54 -0500293 return trace_handle_return(s); \
Steven Rostedt80decc72010-04-23 10:00:22 -0400294} \
295static struct trace_event_functions ftrace_event_type_funcs_##call = { \
296 .trace = ftrace_raw_output_##call, \
297};
Steven Rostedtff038f52009-11-18 20:27:27 -0500298
Steven Rostedte5bc9722009-11-18 20:36:26 -0500299#undef DEFINE_EVENT_PRINT
300#define DEFINE_EVENT_PRINT(template, call, proto, args, print) \
Steven Rostedt83f0d532010-02-16 10:38:47 -0500301static notrace enum print_line_t \
Steven Rostedta9a57762010-04-22 18:46:14 -0400302ftrace_raw_output_##call(struct trace_iterator *iter, int flags, \
303 struct trace_event *event) \
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400304{ \
Steven Rostedte5bc9722009-11-18 20:36:26 -0500305 struct ftrace_raw_##template *field; \
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400306 struct trace_entry *entry; \
Lai Jiangshanbc289ae2010-06-03 18:26:24 +0800307 struct trace_seq *p = &iter->tmp_seq; \
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400308 \
309 entry = iter->ent; \
310 \
Steven Rostedt32c0eda2010-04-23 10:38:03 -0400311 if (entry->type != event_##call.event.type) { \
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400312 WARN_ON_ONCE(1); \
313 return TRACE_TYPE_UNHANDLED; \
314 } \
315 \
316 field = (typeof(field))entry; \
317 \
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400318 trace_seq_init(p); \
Steven Rostedt1d6bae92012-08-09 19:16:14 -0400319 return ftrace_output_call(iter, #call, print); \
Steven Rostedt80decc72010-04-23 10:00:22 -0400320} \
321static struct trace_event_functions ftrace_event_type_funcs_##call = { \
322 .trace = ftrace_raw_output_##call, \
323};
Steven Rostedte5bc9722009-11-18 20:36:26 -0500324
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400325#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
326
Li Zefan43b51ea2009-08-07 10:33:22 +0800327#undef __field_ext
328#define __field_ext(type, item, filter_type) \
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400329 ret = trace_define_field(event_call, #type, #item, \
330 offsetof(typeof(field), item), \
Li Zefan43b51ea2009-08-07 10:33:22 +0800331 sizeof(field.item), \
332 is_signed_type(type), filter_type); \
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400333 if (ret) \
334 return ret;
335
Steven Rostedt4d4c9cc2014-06-17 08:59:16 -0400336#undef __field_struct_ext
337#define __field_struct_ext(type, item, filter_type) \
338 ret = trace_define_field(event_call, #type, #item, \
339 offsetof(typeof(field), item), \
340 sizeof(field.item), \
341 0, filter_type); \
342 if (ret) \
343 return ret;
344
Li Zefan43b51ea2009-08-07 10:33:22 +0800345#undef __field
346#define __field(type, item) __field_ext(type, item, FILTER_OTHER)
347
Steven Rostedt4d4c9cc2014-06-17 08:59:16 -0400348#undef __field_struct
349#define __field_struct(type, item) __field_struct_ext(type, item, FILTER_OTHER)
350
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400351#undef __array
352#define __array(type, item, len) \
Steven Rostedt04295782010-11-12 22:32:11 -0500353 do { \
Vaibhav Nagarnaik87291342014-02-13 19:51:48 -0800354 char *type_str = #type"["__stringify(len)"]"; \
Steven Rostedt04295782010-11-12 22:32:11 -0500355 BUILD_BUG_ON(len > MAX_FILTER_STR_VAL); \
Vaibhav Nagarnaik87291342014-02-13 19:51:48 -0800356 ret = trace_define_field(event_call, type_str, #item, \
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400357 offsetof(typeof(field), item), \
Lai Jiangshanfb7ae982009-12-15 15:39:38 +0800358 sizeof(field.item), \
359 is_signed_type(type), FILTER_OTHER); \
Steven Rostedt04295782010-11-12 22:32:11 -0500360 if (ret) \
361 return ret; \
362 } while (0);
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400363
Li Zefan7fcb7c42009-06-01 15:35:46 +0800364#undef __dynamic_array
365#define __dynamic_array(type, item, len) \
Lai Jiangshan68fd60a2009-07-16 10:53:34 +0800366 ret = trace_define_field(event_call, "__data_loc " #type "[]", #item, \
Li Zefan43b51ea2009-08-07 10:33:22 +0800367 offsetof(typeof(field), __data_loc_##item), \
Lai Jiangshanfb7ae982009-12-15 15:39:38 +0800368 sizeof(field.__data_loc_##item), \
369 is_signed_type(type), FILTER_OTHER);
Li Zefan7fcb7c42009-06-01 15:35:46 +0800370
Frederic Weisbecker9cbf1172009-04-19 04:51:29 +0200371#undef __string
Li Zefan7fcb7c42009-06-01 15:35:46 +0800372#define __string(item, src) __dynamic_array(char, item, -1)
Frederic Weisbecker9cbf1172009-04-19 04:51:29 +0200373
Steven Rostedt (Red Hat)4449bf92014-05-06 13:10:24 -0400374#undef __bitmask
375#define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1)
376
Ingo Molnar091ad362009-11-26 09:04:55 +0100377#undef DECLARE_EVENT_CLASS
378#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, func, print) \
Li Zefan7e4f44b2013-02-21 10:33:33 +0800379static int notrace __init \
Li Zefan14be96c2009-08-19 15:53:52 +0800380ftrace_define_fields_##call(struct ftrace_event_call *event_call) \
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400381{ \
382 struct ftrace_raw_##call field; \
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400383 int ret; \
384 \
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400385 tstruct; \
386 \
387 return ret; \
388}
389
Steven Rostedtff038f52009-11-18 20:27:27 -0500390#undef DEFINE_EVENT
391#define DEFINE_EVENT(template, name, proto, args)
392
Steven Rostedte5bc9722009-11-18 20:36:26 -0500393#undef DEFINE_EVENT_PRINT
394#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
395 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
396
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400397#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
398
399/*
Li Zefan7fcb7c42009-06-01 15:35:46 +0800400 * remember the offset of each array from the beginning of the event.
401 */
402
403#undef __entry
404#define __entry entry
405
406#undef __field
407#define __field(type, item)
408
Li Zefan43b51ea2009-08-07 10:33:22 +0800409#undef __field_ext
410#define __field_ext(type, item, filter_type)
411
Steven Rostedt4d4c9cc2014-06-17 08:59:16 -0400412#undef __field_struct
413#define __field_struct(type, item)
414
415#undef __field_struct_ext
416#define __field_struct_ext(type, item, filter_type)
417
Li Zefan7fcb7c42009-06-01 15:35:46 +0800418#undef __array
419#define __array(type, item, len)
420
421#undef __dynamic_array
422#define __dynamic_array(type, item, len) \
Filipe Brandenburger114e7b52014-02-28 21:32:17 -0800423 __item_length = (len) * sizeof(type); \
Li Zefan7fcb7c42009-06-01 15:35:46 +0800424 __data_offsets->item = __data_size + \
425 offsetof(typeof(*entry), __data); \
Filipe Brandenburger114e7b52014-02-28 21:32:17 -0800426 __data_offsets->item |= __item_length << 16; \
427 __data_size += __item_length;
Li Zefan7fcb7c42009-06-01 15:35:46 +0800428
429#undef __string
Steven Rostedt (Red Hat)4e58e542013-11-26 09:22:54 -0500430#define __string(item, src) __dynamic_array(char, item, \
431 strlen((src) ? (const char *)(src) : "(null)") + 1)
Li Zefan7fcb7c42009-06-01 15:35:46 +0800432
Steven Rostedt (Red Hat)4449bf92014-05-06 13:10:24 -0400433/*
434 * __bitmask_size_in_bytes_raw is the number of bytes needed to hold
435 * num_possible_cpus().
436 */
437#define __bitmask_size_in_bytes_raw(nr_bits) \
438 (((nr_bits) + 7) / 8)
439
440#define __bitmask_size_in_longs(nr_bits) \
441 ((__bitmask_size_in_bytes_raw(nr_bits) + \
442 ((BITS_PER_LONG / 8) - 1)) / (BITS_PER_LONG / 8))
443
444/*
445 * __bitmask_size_in_bytes is the number of bytes needed to hold
446 * num_possible_cpus() padded out to the nearest long. This is what
447 * is saved in the buffer, just to be consistent.
448 */
449#define __bitmask_size_in_bytes(nr_bits) \
450 (__bitmask_size_in_longs(nr_bits) * (BITS_PER_LONG / 8))
451
452#undef __bitmask
453#define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, \
454 __bitmask_size_in_longs(nr_bits))
455
Ingo Molnar091ad362009-11-26 09:04:55 +0100456#undef DECLARE_EVENT_CLASS
457#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
Steven Rostedt83f0d532010-02-16 10:38:47 -0500458static inline notrace int ftrace_get_offsets_##call( \
Li Zefan7fcb7c42009-06-01 15:35:46 +0800459 struct ftrace_data_offsets_##call *__data_offsets, proto) \
460{ \
461 int __data_size = 0; \
Filipe Brandenburger114e7b52014-02-28 21:32:17 -0800462 int __maybe_unused __item_length; \
Li Zefan7fcb7c42009-06-01 15:35:46 +0800463 struct ftrace_raw_##call __maybe_unused *entry; \
464 \
465 tstruct; \
466 \
467 return __data_size; \
468}
469
Steven Rostedtff038f52009-11-18 20:27:27 -0500470#undef DEFINE_EVENT
471#define DEFINE_EVENT(template, name, proto, args)
472
Steven Rostedte5bc9722009-11-18 20:36:26 -0500473#undef DEFINE_EVENT_PRINT
474#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
475 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
476
Li Zefan7fcb7c42009-06-01 15:35:46 +0800477#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
478
479/*
Frederic Weisbecker9cbf1172009-04-19 04:51:29 +0200480 * Stage 4 of the trace events.
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400481 *
482 * Override the macros in <trace/trace_events.h> to include the following:
483 *
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400484 * For those macros defined with TRACE_EVENT:
485 *
486 * static struct ftrace_event_call event_<call>;
487 *
Steven Rostedt22392912010-04-21 12:27:06 -0400488 * static void ftrace_raw_event_<call>(void *__data, proto)
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400489 * {
Steven Rostedtccb469a2012-08-02 10:32:10 -0400490 * struct ftrace_event_file *ftrace_file = __data;
491 * struct ftrace_event_call *event_call = ftrace_file->event_call;
Li Zefan50354a82010-03-24 10:58:24 +0800492 * struct ftrace_data_offsets_<call> __maybe_unused __data_offsets;
Tom Zanussibac5fb92013-10-24 08:59:29 -0500493 * unsigned long eflags = ftrace_file->flags;
494 * enum event_trigger_type __tt = ETT_NONE;
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400495 * struct ring_buffer_event *event;
496 * struct ftrace_raw_<call> *entry; <-- defined in stage 1
Steven Rostedte77405a2009-09-02 14:17:06 -0400497 * struct ring_buffer *buffer;
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400498 * unsigned long irq_flags;
Li Zefan50354a82010-03-24 10:58:24 +0800499 * int __data_size;
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400500 * int pc;
501 *
Tom Zanussibac5fb92013-10-24 08:59:29 -0500502 * if (!(eflags & FTRACE_EVENT_FL_TRIGGER_COND)) {
503 * if (eflags & FTRACE_EVENT_FL_TRIGGER_MODE)
504 * event_triggers_call(ftrace_file, NULL);
505 * if (eflags & FTRACE_EVENT_FL_SOFT_DISABLED)
506 * return;
507 * }
Steven Rostedt (Red Hat)417944c2013-03-12 13:26:18 -0400508 *
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400509 * local_save_flags(irq_flags);
510 * pc = preempt_count();
511 *
Li Zefan50354a82010-03-24 10:58:24 +0800512 * __data_size = ftrace_get_offsets_<call>(&__data_offsets, args);
513 *
Steven Rostedtccb469a2012-08-02 10:32:10 -0400514 * event = trace_event_buffer_lock_reserve(&buffer, ftrace_file,
Steven Rostedt32c0eda2010-04-23 10:38:03 -0400515 * event_<call>->event.type,
Li Zefan50354a82010-03-24 10:58:24 +0800516 * sizeof(*entry) + __data_size,
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400517 * irq_flags, pc);
518 * if (!event)
519 * return;
520 * entry = ring_buffer_event_data(event);
521 *
Li Zefan50354a82010-03-24 10:58:24 +0800522 * { <assign>; } <-- Here we assign the entries by the __field and
523 * __array macros.
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400524 *
Tom Zanussibac5fb92013-10-24 08:59:29 -0500525 * if (eflags & FTRACE_EVENT_FL_TRIGGER_COND)
526 * __tt = event_triggers_call(ftrace_file, entry);
527 *
528 * if (test_bit(FTRACE_EVENT_FL_SOFT_DISABLED_BIT,
529 * &ftrace_file->flags))
530 * ring_buffer_discard_commit(buffer, event);
531 * else if (!filter_check_discard(ftrace_file, entry, buffer, event))
Tom Zanussif306cc82013-10-24 08:34:17 -0500532 * trace_buffer_unlock_commit(buffer, event, irq_flags, pc);
Tom Zanussibac5fb92013-10-24 08:59:29 -0500533 *
534 * if (__tt)
535 * event_triggers_post_call(ftrace_file, __tt);
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400536 * }
537 *
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400538 * static struct trace_event ftrace_event_type_<call> = {
539 * .trace = ftrace_raw_output_<call>, <-- stage 2
540 * };
541 *
Li Zefan50354a82010-03-24 10:58:24 +0800542 * static const char print_fmt_<call>[] = <TP_printk>;
543 *
Steven Rostedt8f082012010-04-20 10:47:33 -0400544 * static struct ftrace_event_class __used event_class_<template> = {
545 * .system = "<system>",
Steven Rostedt2e33af02010-04-22 10:35:55 -0400546 * .define_fields = ftrace_define_fields_<call>,
Steven Rostedt0405ab82010-04-22 11:46:44 -0400547 * .fields = LIST_HEAD_INIT(event_class_##call.fields),
548 * .raw_init = trace_event_raw_init,
549 * .probe = ftrace_raw_event_##call,
Steven Rostedta1d0ce82010-06-08 11:22:06 -0400550 * .reg = ftrace_event_reg,
Steven Rostedt8f082012010-04-20 10:47:33 -0400551 * };
552 *
Steven Rostedte4a9ea52011-01-27 09:15:30 -0500553 * static struct ftrace_event_call event_<call> = {
Steven Rostedt8f082012010-04-20 10:47:33 -0400554 * .class = event_class_<template>,
Mathieu Desnoyersabb43f62014-04-09 17:06:08 -0400555 * {
556 * .tp = &__tracepoint_<call>,
557 * },
Steven Rostedt2e33af02010-04-22 10:35:55 -0400558 * .event = &ftrace_event_type_<call>,
Li Zefan50354a82010-03-24 10:58:24 +0800559 * .print_fmt = print_fmt_<call>,
Mathieu Desnoyersde7b2972014-04-08 17:26:21 -0400560 * .flags = TRACE_EVENT_FL_TRACEPOINT,
Steven Rostedt8f082012010-04-20 10:47:33 -0400561 * };
Steven Rostedte4a9ea52011-01-27 09:15:30 -0500562 * // its only safe to use pointers when doing linker tricks to
563 * // create an array.
564 * static struct ftrace_event_call __used
565 * __attribute__((section("_ftrace_events"))) *__event_<call> = &event_<call>;
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400566 *
567 */
568
Li Zefan07b139c2009-12-21 14:27:35 +0800569#ifdef CONFIG_PERF_EVENTS
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400570
Steven Rostedt22392912010-04-21 12:27:06 -0400571#define _TRACE_PERF_PROTO(call, proto) \
572 static notrace void \
573 perf_trace_##call(void *__data, proto);
574
Frederic Weisbecker97d5a222010-03-05 05:35:37 +0100575#define _TRACE_PERF_INIT(call) \
Steven Rostedt22392912010-04-21 12:27:06 -0400576 .perf_probe = perf_trace_##call,
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400577
578#else
Steven Rostedt22392912010-04-21 12:27:06 -0400579#define _TRACE_PERF_PROTO(call, proto)
Frederic Weisbecker97d5a222010-03-05 05:35:37 +0100580#define _TRACE_PERF_INIT(call)
Li Zefan07b139c2009-12-21 14:27:35 +0800581#endif /* CONFIG_PERF_EVENTS */
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400582
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400583#undef __entry
584#define __entry entry
585
Frederic Weisbecker9cbf1172009-04-19 04:51:29 +0200586#undef __field
587#define __field(type, item)
588
Steven Rostedt4d4c9cc2014-06-17 08:59:16 -0400589#undef __field_struct
590#define __field_struct(type, item)
591
Frederic Weisbecker9cbf1172009-04-19 04:51:29 +0200592#undef __array
593#define __array(type, item, len)
594
Li Zefan7fcb7c42009-06-01 15:35:46 +0800595#undef __dynamic_array
596#define __dynamic_array(type, item, len) \
597 __entry->__data_loc_##item = __data_offsets.item;
598
Frederic Weisbecker9cbf1172009-04-19 04:51:29 +0200599#undef __string
Steven Rostedt (Red Hat)4449bf92014-05-06 13:10:24 -0400600#define __string(item, src) __dynamic_array(char, item, -1)
Frederic Weisbecker9cbf1172009-04-19 04:51:29 +0200601
602#undef __assign_str
603#define __assign_str(dst, src) \
Steven Rostedt (Red Hat)4e58e542013-11-26 09:22:54 -0500604 strcpy(__get_str(dst), (src) ? (const char *)(src) : "(null)");
Frederic Weisbecker9cbf1172009-04-19 04:51:29 +0200605
Steven Rostedt (Red Hat)4449bf92014-05-06 13:10:24 -0400606#undef __bitmask
607#define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1)
608
609#undef __get_bitmask
610#define __get_bitmask(field) (char *)__get_dynamic_array(field)
611
612#undef __assign_bitmask
613#define __assign_bitmask(dst, src, nr_bits) \
614 memcpy(__get_bitmask(dst), (src), __bitmask_size_in_bytes(nr_bits))
615
Lai Jiangshan0fa0eda2009-12-15 15:39:57 +0800616#undef TP_fast_assign
617#define TP_fast_assign(args...) args
618
Oleg Nesterov12473962013-08-06 18:08:44 +0200619#undef __perf_addr
620#define __perf_addr(a) (a)
621
622#undef __perf_count
623#define __perf_count(c) (c)
624
625#undef __perf_task
626#define __perf_task(t) (t)
Lai Jiangshan0fa0eda2009-12-15 15:39:57 +0800627
Ingo Molnar091ad362009-11-26 09:04:55 +0100628#undef DECLARE_EVENT_CLASS
629#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400630 \
Steven Rostedt83f0d532010-02-16 10:38:47 -0500631static notrace void \
Steven Rostedt22392912010-04-21 12:27:06 -0400632ftrace_raw_event_##call(void *__data, proto) \
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400633{ \
Steven Rostedtae63b312012-05-03 23:09:03 -0400634 struct ftrace_event_file *ftrace_file = __data; \
Li Zefan7fcb7c42009-06-01 15:35:46 +0800635 struct ftrace_data_offsets_##call __maybe_unused __data_offsets;\
Steven Rostedt3fd40d12012-08-09 22:42:57 -0400636 struct ftrace_event_buffer fbuffer; \
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400637 struct ftrace_raw_##call *entry; \
Li Zefan7fcb7c42009-06-01 15:35:46 +0800638 int __data_size; \
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400639 \
Steven Rostedt (Red Hat)13a1e4a2014-01-06 21:32:10 -0500640 if (ftrace_trigger_soft_disabled(ftrace_file)) \
641 return; \
Steven Rostedt (Red Hat)417944c2013-03-12 13:26:18 -0400642 \
Li Zefan7fcb7c42009-06-01 15:35:46 +0800643 __data_size = ftrace_get_offsets_##call(&__data_offsets, args); \
Frederic Weisbecker9cbf1172009-04-19 04:51:29 +0200644 \
Steven Rostedt3fd40d12012-08-09 22:42:57 -0400645 entry = ftrace_event_buffer_reserve(&fbuffer, ftrace_file, \
646 sizeof(*entry) + __data_size); \
647 \
648 if (!entry) \
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400649 return; \
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400650 \
Li Zefan7fcb7c42009-06-01 15:35:46 +0800651 tstruct \
652 \
Li Zefana9c1c3a2009-06-01 15:35:13 +0800653 { assign; } \
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400654 \
Steven Rostedt3fd40d12012-08-09 22:42:57 -0400655 ftrace_event_buffer_commit(&fbuffer); \
Steven Rostedtff038f52009-11-18 20:27:27 -0500656}
Steven Rostedt22392912010-04-21 12:27:06 -0400657/*
658 * The ftrace_test_probe is compiled out, it is only here as a build time check
659 * to make sure that if the tracepoint handling changes, the ftrace probe will
660 * fail to compile unless it too is updated.
661 */
Steven Rostedtff038f52009-11-18 20:27:27 -0500662
663#undef DEFINE_EVENT
664#define DEFINE_EVENT(template, call, proto, args) \
Steven Rostedt22392912010-04-21 12:27:06 -0400665static inline void ftrace_test_probe_##call(void) \
Steven Rostedtff038f52009-11-18 20:27:27 -0500666{ \
Steven Rostedt22392912010-04-21 12:27:06 -0400667 check_trace_callback_type_##call(ftrace_raw_event_##template); \
668}
Steven Rostedte5bc9722009-11-18 20:36:26 -0500669
670#undef DEFINE_EVENT_PRINT
Steven Rostedt80decc72010-04-23 10:00:22 -0400671#define DEFINE_EVENT_PRINT(template, name, proto, args, print)
Steven Rostedte5bc9722009-11-18 20:36:26 -0500672
673#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
674
Lai Jiangshan509e7602009-12-15 15:39:42 +0800675#undef __entry
676#define __entry REC
677
678#undef __print_flags
679#undef __print_symbolic
Namhyung Kimb102f1d2012-06-27 09:41:39 +0900680#undef __print_hex
Lai Jiangshan509e7602009-12-15 15:39:42 +0800681#undef __get_dynamic_array
Steven Rostedt (Red Hat)beba4bb2014-06-04 14:29:33 -0400682#undef __get_dynamic_array_len
Lai Jiangshan509e7602009-12-15 15:39:42 +0800683#undef __get_str
Steven Rostedt (Red Hat)4449bf92014-05-06 13:10:24 -0400684#undef __get_bitmask
Dave Martin6ea22482015-01-28 12:48:53 +0000685#undef __print_array
Lai Jiangshan509e7602009-12-15 15:39:42 +0800686
687#undef TP_printk
688#define TP_printk(fmt, args...) "\"" fmt "\", " __stringify(args)
689
Ingo Molnar091ad362009-11-26 09:04:55 +0100690#undef DECLARE_EVENT_CLASS
Lai Jiangshan509e7602009-12-15 15:39:42 +0800691#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
Steven Rostedt22392912010-04-21 12:27:06 -0400692_TRACE_PERF_PROTO(call, PARAMS(proto)); \
Steven Rostedt8f082012010-04-20 10:47:33 -0400693static const char print_fmt_##call[] = print; \
Li Zefan523c8112013-03-04 14:15:59 +0800694static struct ftrace_event_class __used __refdata event_class_##call = { \
Steven Rostedt22392912010-04-21 12:27:06 -0400695 .system = __stringify(TRACE_SYSTEM), \
Steven Rostedt2e33af02010-04-22 10:35:55 -0400696 .define_fields = ftrace_define_fields_##call, \
697 .fields = LIST_HEAD_INIT(event_class_##call.fields),\
Steven Rostedt0405ab82010-04-22 11:46:44 -0400698 .raw_init = trace_event_raw_init, \
Steven Rostedt22392912010-04-21 12:27:06 -0400699 .probe = ftrace_raw_event_##call, \
Steven Rostedta1d0ce82010-06-08 11:22:06 -0400700 .reg = ftrace_event_reg, \
Steven Rostedt22392912010-04-21 12:27:06 -0400701 _TRACE_PERF_INIT(call) \
Steven Rostedt8f082012010-04-20 10:47:33 -0400702};
Steven Rostedte5bc9722009-11-18 20:36:26 -0500703
704#undef DEFINE_EVENT
705#define DEFINE_EVENT(template, call, proto, args) \
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400706 \
Steven Rostedte4a9ea52011-01-27 09:15:30 -0500707static struct ftrace_event_call __used event_##call = { \
Steven Rostedt8f082012010-04-20 10:47:33 -0400708 .class = &event_class_##template, \
Mathieu Desnoyersabb43f62014-04-09 17:06:08 -0400709 { \
710 .tp = &__tracepoint_##call, \
711 }, \
Steven Rostedt80decc72010-04-23 10:00:22 -0400712 .event.funcs = &ftrace_event_type_funcs_##template, \
Lai Jiangshan509e7602009-12-15 15:39:42 +0800713 .print_fmt = print_fmt_##template, \
Mathieu Desnoyersde7b2972014-04-08 17:26:21 -0400714 .flags = TRACE_EVENT_FL_TRACEPOINT, \
Steven Rostedte4a9ea52011-01-27 09:15:30 -0500715}; \
716static struct ftrace_event_call __used \
717__attribute__((section("_ftrace_events"))) *__event_##call = &event_##call
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400718
Steven Rostedte5bc9722009-11-18 20:36:26 -0500719#undef DEFINE_EVENT_PRINT
720#define DEFINE_EVENT_PRINT(template, call, proto, args, print) \
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400721 \
Lai Jiangshan509e7602009-12-15 15:39:42 +0800722static const char print_fmt_##call[] = print; \
723 \
Steven Rostedte4a9ea52011-01-27 09:15:30 -0500724static struct ftrace_event_call __used event_##call = { \
Steven Rostedt8f082012010-04-20 10:47:33 -0400725 .class = &event_class_##template, \
Mathieu Desnoyersabb43f62014-04-09 17:06:08 -0400726 { \
727 .tp = &__tracepoint_##call, \
728 }, \
Steven Rostedt80decc72010-04-23 10:00:22 -0400729 .event.funcs = &ftrace_event_type_funcs_##call, \
Lai Jiangshan509e7602009-12-15 15:39:42 +0800730 .print_fmt = print_fmt_##call, \
Mathieu Desnoyersde7b2972014-04-08 17:26:21 -0400731 .flags = TRACE_EVENT_FL_TRACEPOINT, \
Steven Rostedte4a9ea52011-01-27 09:15:30 -0500732}; \
733static struct ftrace_event_call __used \
734__attribute__((section("_ftrace_events"))) *__event_##call = &event_##call
Steven Rostedtf42c85e2009-04-13 12:25:37 -0400735
736#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
737
Frederic Weisbeckerf413cdb2009-08-07 01:25:54 +0200738
Li Zefan07b139c2009-12-21 14:27:35 +0800739#ifdef CONFIG_PERF_EVENTS
Frederic Weisbeckerf413cdb2009-08-07 01:25:54 +0200740
Lai Jiangshan509e7602009-12-15 15:39:42 +0800741#undef __entry
742#define __entry entry
743
744#undef __get_dynamic_array
745#define __get_dynamic_array(field) \
746 ((void *)__entry + (__entry->__data_loc_##field & 0xffff))
747
Steven Rostedt (Red Hat)beba4bb2014-06-04 14:29:33 -0400748#undef __get_dynamic_array_len
749#define __get_dynamic_array_len(field) \
750 ((__entry->__data_loc_##field >> 16) & 0xffff)
751
Lai Jiangshan509e7602009-12-15 15:39:42 +0800752#undef __get_str
753#define __get_str(field) (char *)__get_dynamic_array(field)
754
Steven Rostedt (Red Hat)4449bf92014-05-06 13:10:24 -0400755#undef __get_bitmask
756#define __get_bitmask(field) (char *)__get_dynamic_array(field)
757
Frederic Weisbeckerf413cdb2009-08-07 01:25:54 +0200758#undef __perf_addr
Oleg Nesterov12473962013-08-06 18:08:44 +0200759#define __perf_addr(a) (__addr = (a))
Frederic Weisbeckerf413cdb2009-08-07 01:25:54 +0200760
761#undef __perf_count
Oleg Nesterov12473962013-08-06 18:08:44 +0200762#define __perf_count(c) (__count = (c))
Frederic Weisbeckerf413cdb2009-08-07 01:25:54 +0200763
Andrew Vagine6dab5f2012-07-11 18:14:58 +0400764#undef __perf_task
Oleg Nesterov12473962013-08-06 18:08:44 +0200765#define __perf_task(t) (__task = (t))
Andrew Vagin92e51932011-09-26 19:55:32 +0400766
Ingo Molnar091ad362009-11-26 09:04:55 +0100767#undef DECLARE_EVENT_CLASS
768#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
Steven Rostedt83f0d532010-02-16 10:38:47 -0500769static notrace void \
Steven Rostedt22392912010-04-21 12:27:06 -0400770perf_trace_##call(void *__data, proto) \
Frederic Weisbeckerf413cdb2009-08-07 01:25:54 +0200771{ \
Steven Rostedt22392912010-04-21 12:27:06 -0400772 struct ftrace_event_call *event_call = __data; \
Frederic Weisbeckerf413cdb2009-08-07 01:25:54 +0200773 struct ftrace_data_offsets_##call __maybe_unused __data_offsets;\
Frederic Weisbeckerf413cdb2009-08-07 01:25:54 +0200774 struct ftrace_raw_##call *entry; \
Peter Zijlstra (Intel)86038c52014-12-16 12:47:34 +0100775 struct pt_regs *__regs; \
Frederic Weisbeckerf413cdb2009-08-07 01:25:54 +0200776 u64 __addr = 0, __count = 1; \
Andrew Vagine6dab5f2012-07-11 18:14:58 +0400777 struct task_struct *__task = NULL; \
Peter Zijlstra1c024eca2010-05-19 14:02:22 +0200778 struct hlist_head *head; \
Frederic Weisbeckerf413cdb2009-08-07 01:25:54 +0200779 int __entry_size; \
780 int __data_size; \
Peter Zijlstra4ed7c922009-11-23 11:37:29 +0100781 int rctx; \
Frederic Weisbeckerf413cdb2009-08-07 01:25:54 +0200782 \
783 __data_size = ftrace_get_offsets_##call(&__data_offsets, args); \
Oleg Nesterovd027e6a2013-08-06 18:08:47 +0200784 \
785 head = this_cpu_ptr(event_call->perf_events); \
786 if (__builtin_constant_p(!__task) && !__task && \
787 hlist_empty(head)) \
788 return; \
789 \
Peter Zijlstraa0445602009-08-10 11:16:52 +0200790 __entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32),\
791 sizeof(u64)); \
Frederic Weisbecker304703a2009-08-10 16:11:32 +0200792 __entry_size -= sizeof(u32); \
Frederic Weisbeckerf413cdb2009-08-07 01:25:54 +0200793 \
Oleg Nesterov36009d072013-08-06 18:08:41 +0200794 entry = perf_trace_buf_prepare(__entry_size, \
795 event_call->event.type, &__regs, &rctx); \
Xiao Guangrong430ad5a2010-01-28 09:32:29 +0800796 if (!entry) \
797 return; \
Peter Zijlstrab7e2ece2010-05-19 10:52:27 +0200798 \
Peter Zijlstra (Intel)86038c52014-12-16 12:47:34 +0100799 perf_fetch_caller_regs(__regs); \
800 \
Frederic Weisbecker20ab44252009-09-18 06:10:28 +0200801 tstruct \
802 \
803 { assign; } \
804 \
Frederic Weisbecker97d5a222010-03-05 05:35:37 +0100805 perf_trace_buf_submit(entry, __entry_size, rctx, __addr, \
Peter Zijlstra (Intel)86038c52014-12-16 12:47:34 +0100806 __count, __regs, head, __task); \
Frederic Weisbeckerf413cdb2009-08-07 01:25:54 +0200807}
808
Steven Rostedt22392912010-04-21 12:27:06 -0400809/*
810 * This part is compiled out, it is only here as a build time check
811 * to make sure that if the tracepoint handling changes, the
812 * perf probe will fail to compile unless it too is updated.
813 */
Steven Rostedtff038f52009-11-18 20:27:27 -0500814#undef DEFINE_EVENT
Frederic Weisbecker6cc8a7c2010-03-19 01:23:53 +0100815#define DEFINE_EVENT(template, call, proto, args) \
Steven Rostedt22392912010-04-21 12:27:06 -0400816static inline void perf_test_probe_##call(void) \
Frederic Weisbecker6cc8a7c2010-03-19 01:23:53 +0100817{ \
Steven Rostedt22392912010-04-21 12:27:06 -0400818 check_trace_callback_type_##call(perf_trace_##template); \
Steven Rostedtff038f52009-11-18 20:27:27 -0500819}
820
Steven Rostedt22392912010-04-21 12:27:06 -0400821
Steven Rostedte5bc9722009-11-18 20:36:26 -0500822#undef DEFINE_EVENT_PRINT
823#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
824 DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
825
Frederic Weisbeckerf413cdb2009-08-07 01:25:54 +0200826#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
Li Zefan07b139c2009-12-21 14:27:35 +0800827#endif /* CONFIG_PERF_EVENTS */
Frederic Weisbeckerf413cdb2009-08-07 01:25:54 +0200828