Blame view
include/trace/trace_events.h
21.7 KB
c32e827b2 tracing: add raw ... |
1 |
/* |
f42c85e74 tracing/events: m... |
2 3 4 5 |
* Stage 1 of the trace events. * * Override the macros in <trace/trace_events.h> to include the following: * |
a72377657 tracing: Rename f... |
6 |
* struct trace_event_raw_<call> { |
f42c85e74 tracing/events: m... |
7 8 9 10 11 12 13 14 15 16 17 |
* struct trace_entry ent; * <type> <item>; * <type2> <item2>[<len>]; * [...] * }; * * The <type> <item> is created by the __field(type, item) macro or * the __array(type2, item2, len) macro. * We simply do "type item;", and that will create the fields * in the structure. */ |
af658dca2 tracing: Rename f... |
18 |
#include <linux/trace_events.h> |
f42c85e74 tracing/events: m... |
19 |
|
acd388fd3 tracing: Give sys... |
20 21 22 23 24 25 26 27 28 29 30 31 32 33 |
#ifndef TRACE_SYSTEM_VAR #define TRACE_SYSTEM_VAR TRACE_SYSTEM #endif #define __app__(x, y) str__##x##y #define __app(x, y) __app__(x, y) #define TRACE_SYSTEM_STRING __app(TRACE_SYSTEM_VAR,__trace_system_name) #define TRACE_MAKE_SYSTEM_STR() \ static const char TRACE_SYSTEM_STRING[] = \ __stringify(TRACE_SYSTEM) TRACE_MAKE_SYSTEM_STR(); |
0c564a538 tracing: Add TRAC... |
34 35 36 37 38 39 40 41 42 43 44 45 |
#undef TRACE_DEFINE_ENUM #define TRACE_DEFINE_ENUM(a) \ static struct trace_enum_map __used __initdata \ __##TRACE_SYSTEM##_##a = \ { \ .system = TRACE_SYSTEM_STRING, \ .enum_string = #a, \ .enum_value = a \ }; \ static struct trace_enum_map __used \ __attribute__((section("_ftrace_enum_map"))) \ *TRACE_SYSTEM##_##a = &__##TRACE_SYSTEM##_##a |
ff038f5c3 tracing: Create n... |
46 |
/* |
091ad3658 events: Rename TR... |
47 |
* DECLARE_EVENT_CLASS can be used to add a generic function |
ff038f5c3 tracing: Create n... |
48 49 50 |
* handlers for events. That is, if all events have the same * parameters and just have distinct trace points. * Each tracepoint can be defined with DEFINE_EVENT and that |
091ad3658 events: Rename TR... |
51 |
* will map the DECLARE_EVENT_CLASS to the tracepoint. |
ff038f5c3 tracing: Create n... |
52 53 54 55 56 |
* * TRACE_EVENT is a one to one mapping between tracepoint and template. */ #undef TRACE_EVENT #define TRACE_EVENT(name, proto, args, tstruct, assign, print) \ |
091ad3658 events: Rename TR... |
57 |
DECLARE_EVENT_CLASS(name, \ |
ff038f5c3 tracing: Create n... |
58 59 60 61 62 63 |
PARAMS(proto), \ PARAMS(args), \ PARAMS(tstruct), \ PARAMS(assign), \ PARAMS(print)); \ DEFINE_EVENT(name, name, PARAMS(proto), PARAMS(args)); |
7fcb7c472 tracing/events: i... |
64 65 |
#undef __field #define __field(type, item) type item; |
43b51ead3 tracing/filters: ... |
66 67 |
#undef __field_ext #define __field_ext(type, item, filter_type) type item; |
4d4c9cc83 tracing: Add __fi... |
68 69 70 71 72 |
#undef __field_struct #define __field_struct(type, item) type item; #undef __field_struct_ext #define __field_struct_ext(type, item, filter_type) type item; |
f42c85e74 tracing/events: m... |
73 74 |
#undef __array #define __array(type, item, len) type item[len]; |
7fcb7c472 tracing/events: i... |
75 |
#undef __dynamic_array |
7d536cb3f tracing/events: r... |
76 |
#define __dynamic_array(type, item, len) u32 __data_loc_##item; |
f42c85e74 tracing/events: m... |
77 |
|
9cbf11766 tracing/events: p... |
78 |
#undef __string |
7fcb7c472 tracing/events: i... |
79 |
#define __string(item, src) __dynamic_array(char, item, -1) |
9cbf11766 tracing/events: p... |
80 |
|
4449bf927 tracing: Add __bi... |
81 82 |
#undef __bitmask #define __bitmask(item, nr_bits) __dynamic_array(char, item, -1) |
f42c85e74 tracing/events: m... |
83 84 |
#undef TP_STRUCT__entry #define TP_STRUCT__entry(args...) args |
091ad3658 events: Rename TR... |
85 86 |
#undef DECLARE_EVENT_CLASS #define DECLARE_EVENT_CLASS(name, proto, args, tstruct, assign, print) \ |
a72377657 tracing: Rename f... |
87 |
struct trace_event_raw_##name { \ |
ff038f5c3 tracing: Create n... |
88 89 90 |
struct trace_entry ent; \ tstruct \ char __data[0]; \ |
8f0820183 tracing: Create c... |
91 92 |
}; \ \ |
2425bcb92 tracing: Rename f... |
93 |
static struct trace_event_class event_class_##name; |
8f0820183 tracing: Create c... |
94 |
|
ff038f5c3 tracing: Create n... |
95 96 |
#undef DEFINE_EVENT #define DEFINE_EVENT(template, name, proto, args) \ |
2425bcb92 tracing: Rename f... |
97 |
static struct trace_event_call __used \ |
86c38a31a tracing: Fix ftra... |
98 |
__attribute__((__aligned__(4))) event_##name |
f42c85e74 tracing/events: m... |
99 |
|
f5abaa1bf tracing: Add DEFI... |
100 101 102 |
#undef DEFINE_EVENT_FN #define DEFINE_EVENT_FN(template, name, proto, args, reg, unreg) \ DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) |
e5bc97216 tracing: Create n... |
103 104 105 |
#undef DEFINE_EVENT_PRINT #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) |
974198758 tracing: Move tra... |
106 107 |
/* Callbacks are meaningless to ftrace. */ #undef TRACE_EVENT_FN |
0dd7b7478 tracing: Fix doub... |
108 109 |
#define TRACE_EVENT_FN(name, proto, args, tstruct, \ assign, print, reg, unreg) \ |
819ce45af tracing: Drop cpp... |
110 111 |
TRACE_EVENT(name, PARAMS(proto), PARAMS(args), \ PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \ |
2701121b8 tracing: Introduc... |
112 113 114 115 116 117 |
#undef TRACE_EVENT_FN_COND #define TRACE_EVENT_FN_COND(name, proto, args, cond, tstruct, \ assign, print, reg, unreg) \ TRACE_EVENT_CONDITION(name, PARAMS(proto), PARAMS(args), PARAMS(cond), \ PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \ |
974198758 tracing: Move tra... |
118 |
|
1ed0c5971 tracing: New macr... |
119 120 |
#undef TRACE_EVENT_FLAGS #define TRACE_EVENT_FLAGS(name, value) \ |
53cf810b1 tracing: Allow sy... |
121 |
__TRACE_EVENT_FLAGS(name, value) |
1ed0c5971 tracing: New macr... |
122 |
|
d5b5f391d ftrace, perf: Avo... |
123 124 125 |
#undef TRACE_EVENT_PERF_PERM #define TRACE_EVENT_PERF_PERM(name, expr...) \ __TRACE_EVENT_PERF_PERM(name, expr) |
f42c85e74 tracing/events: m... |
126 127 128 129 130 |
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE) /* * Stage 2 of the trace events. * |
9cbf11766 tracing/events: p... |
131 132 |
* Include the following: * |
62323a148 tracing: Rename f... |
133 |
* struct trace_event_data_offsets_<call> { |
7d536cb3f tracing/events: r... |
134 135 |
* u32 <item1>; * u32 <item2>; |
9cbf11766 tracing/events: p... |
136 137 138 |
* [...] * }; * |
7d536cb3f tracing/events: r... |
139 |
* The __dynamic_array() macro will create each u32 <item>, this is |
7fcb7c472 tracing/events: i... |
140 |
* to keep the offset of each array from the beginning of the event. |
7d536cb3f tracing/events: r... |
141 |
* The size of an array is also encoded, in the higher 16 bits of <item>. |
9cbf11766 tracing/events: p... |
142 |
*/ |
0c564a538 tracing: Add TRAC... |
143 144 |
#undef TRACE_DEFINE_ENUM #define TRACE_DEFINE_ENUM(a) |
7fcb7c472 tracing/events: i... |
145 |
#undef __field |
43b51ead3 tracing/filters: ... |
146 147 148 149 |
#define __field(type, item) #undef __field_ext #define __field_ext(type, item, filter_type) |
7fcb7c472 tracing/events: i... |
150 |
|
4d4c9cc83 tracing: Add __fi... |
151 152 153 154 155 |
#undef __field_struct #define __field_struct(type, item) #undef __field_struct_ext #define __field_struct_ext(type, item, filter_type) |
9cbf11766 tracing/events: p... |
156 157 |
#undef __array #define __array(type, item, len) |
7fcb7c472 tracing/events: i... |
158 |
#undef __dynamic_array |
7d536cb3f tracing/events: r... |
159 |
#define __dynamic_array(type, item, len) u32 item; |
9cbf11766 tracing/events: p... |
160 161 |
#undef __string |
7fcb7c472 tracing/events: i... |
162 |
#define __string(item, src) __dynamic_array(char, item, -1) |
9cbf11766 tracing/events: p... |
163 |
|
4449bf927 tracing: Add __bi... |
164 165 |
#undef __bitmask #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1) |
091ad3658 events: Rename TR... |
166 167 |
#undef DECLARE_EVENT_CLASS #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ |
62323a148 tracing: Rename f... |
168 |
struct trace_event_data_offsets_##call { \ |
9cbf11766 tracing/events: p... |
169 170 |
tstruct; \ }; |
ff038f5c3 tracing: Create n... |
171 172 |
#undef DEFINE_EVENT #define DEFINE_EVENT(template, name, proto, args) |
e5bc97216 tracing: Create n... |
173 174 175 |
#undef DEFINE_EVENT_PRINT #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) |
1ed0c5971 tracing: New macr... |
176 177 |
#undef TRACE_EVENT_FLAGS #define TRACE_EVENT_FLAGS(event, flag) |
d5b5f391d ftrace, perf: Avo... |
178 179 |
#undef TRACE_EVENT_PERF_PERM #define TRACE_EVENT_PERF_PERM(event, expr...) |
9cbf11766 tracing/events: p... |
180 181 182 183 184 |
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE) /* * Stage 3 of the trace events. * |
f42c85e74 tracing/events: m... |
185 186 187 |
* Override the macros in <trace/trace_events.h> to include the following: * * enum print_line_t |
892c505aa tracing: Rename f... |
188 |
* trace_raw_output_<call>(struct trace_iterator *iter, int flags) |
f42c85e74 tracing/events: m... |
189 190 |
* { * struct trace_seq *s = &iter->seq; |
a72377657 tracing: Rename f... |
191 |
* struct trace_event_raw_<call> *field; <-- defined in stage 1 |
f42c85e74 tracing/events: m... |
192 |
* struct trace_entry *entry; |
bc289ae98 tracing: Reduce l... |
193 |
* struct trace_seq *p = &iter->tmp_seq; |
f42c85e74 tracing/events: m... |
194 195 196 197 |
* int ret; * * entry = iter->ent; * |
32c0edaea tracing: Remove d... |
198 |
* if (entry->type != event_<call>->event.type) { |
f42c85e74 tracing/events: m... |
199 200 201 202 203 204 |
* WARN_ON_ONCE(1); * return TRACE_TYPE_UNHANDLED; * } * * field = (typeof(field))entry; * |
56d8bd3f0 tracing: fix mult... |
205 |
* trace_seq_init(p); |
50354a8a2 tracing: Update c... |
206 207 208 209 |
* ret = trace_seq_printf(s, "%s: ", <call>); * if (ret) * ret = trace_seq_printf(s, <TP_printk> " "); |
f42c85e74 tracing/events: m... |
210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 |
* if (!ret) * return TRACE_TYPE_PARTIAL_LINE; * * return TRACE_TYPE_HANDLED; * } * * This is the method used to print the raw event to the trace * output format. Note, this is not needed if the data is read * in binary. */ #undef __entry #define __entry field #undef TP_printk #define TP_printk(fmt, args...) fmt " ", args |
7fcb7c472 tracing/events: i... |
227 228 |
#undef __get_dynamic_array #define __get_dynamic_array(field) \ |
7d536cb3f tracing/events: r... |
229 |
((void *)__entry + (__entry->__data_loc_##field & 0xffff)) |
7fcb7c472 tracing/events: i... |
230 |
|
beba4bb09 tracing: Add __ge... |
231 232 233 |
#undef __get_dynamic_array_len #define __get_dynamic_array_len(field) \ ((__entry->__data_loc_##field >> 16) & 0xffff) |
9cbf11766 tracing/events: p... |
234 |
#undef __get_str |
7fcb7c472 tracing/events: i... |
235 |
#define __get_str(field) (char *)__get_dynamic_array(field) |
9cbf11766 tracing/events: p... |
236 |
|
4449bf927 tracing: Add __bi... |
237 238 239 240 241 |
#undef __get_bitmask #define __get_bitmask(field) \ ({ \ void *__bitmask = __get_dynamic_array(field); \ unsigned int __bitmask_size; \ |
beba4bb09 tracing: Add __ge... |
242 |
__bitmask_size = __get_dynamic_array_len(field); \ |
645df987f tracing: Rename f... |
243 |
trace_print_bitmask_seq(p, __bitmask, __bitmask_size); \ |
4449bf927 tracing: Add __bi... |
244 |
}) |
be74b73a5 tracing: add __pr... |
245 246 247 |
#undef __print_flags #define __print_flags(flag, delim, flag_array...) \ ({ \ |
a48f494e1 tracing: have TRA... |
248 |
static const struct trace_print_flags __flags[] = \ |
be74b73a5 tracing: add __pr... |
249 |
{ flag_array, { -1, NULL }}; \ |
645df987f tracing: Rename f... |
250 |
trace_print_flags_seq(p, delim, flag, __flags); \ |
be74b73a5 tracing: add __pr... |
251 |
}) |
0f4fc29dd tracing: add __pr... |
252 253 254 255 256 |
#undef __print_symbolic #define __print_symbolic(value, symbol_array...) \ ({ \ static const struct trace_print_flags symbols[] = \ { symbol_array, { -1, NULL }}; \ |
645df987f tracing: Rename f... |
257 |
trace_print_symbols_seq(p, value, symbols); \ |
0f4fc29dd tracing: add __pr... |
258 |
}) |
2fc1b6f0d tracing: Add __pr... |
259 260 261 262 263 264 |
#undef __print_symbolic_u64 #if BITS_PER_LONG == 32 #define __print_symbolic_u64(value, symbol_array...) \ ({ \ static const struct trace_print_flags_u64 symbols[] = \ { symbol_array, { -1, NULL } }; \ |
645df987f tracing: Rename f... |
265 |
trace_print_symbols_seq_u64(p, value, symbols); \ |
2fc1b6f0d tracing: Add __pr... |
266 267 268 269 270 |
}) #else #define __print_symbolic_u64(value, symbol_array...) \ __print_symbolic(value, symbol_array) #endif |
5a2e39959 [SCSI] ftrace: ad... |
271 |
#undef __print_hex |
645df987f tracing: Rename f... |
272 |
#define __print_hex(buf, buf_len) trace_print_hex_seq(p, buf, buf_len) |
5a2e39959 [SCSI] ftrace: ad... |
273 |
|
6ea22486b tracing: Add arra... |
274 275 276 277 278 |
#undef __print_array #define __print_array(array, count, el_size) \ ({ \ BUILD_BUG_ON(el_size != 1 && el_size != 2 && \ el_size != 4 && el_size != 8); \ |
645df987f tracing: Rename f... |
279 |
trace_print_array_seq(p, array, count, el_size); \ |
6ea22486b tracing: Add arra... |
280 |
}) |
091ad3658 events: Rename TR... |
281 282 |
#undef DECLARE_EVENT_CLASS #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ |
83f0d5399 tracing: Add notr... |
283 |
static notrace enum print_line_t \ |
892c505aa tracing: Rename f... |
284 285 |
trace_raw_output_##call(struct trace_iterator *iter, int flags, \ struct trace_event *trace_event) \ |
f42c85e74 tracing/events: m... |
286 287 |
{ \ struct trace_seq *s = &iter->seq; \ |
f71130de5 tracing: Add a he... |
288 |
struct trace_seq __maybe_unused *p = &iter->tmp_seq; \ |
a72377657 tracing: Rename f... |
289 |
struct trace_event_raw_##call *field; \ |
f42c85e74 tracing/events: m... |
290 291 |
int ret; \ \ |
f71130de5 tracing: Add a he... |
292 |
field = (typeof(field))iter->ent; \ |
80decc70a tracing: Move pri... |
293 |
\ |
892c505aa tracing: Rename f... |
294 |
ret = trace_raw_output_prep(iter, trace_event); \ |
8e2e095cb tracing: Fix retu... |
295 |
if (ret != TRACE_TYPE_HANDLED) \ |
f71130de5 tracing: Add a he... |
296 297 |
return ret; \ \ |
19a7fe206 tracing: Add trac... |
298 |
trace_seq_printf(s, print); \ |
f42c85e74 tracing/events: m... |
299 |
\ |
19a7fe206 tracing: Add trac... |
300 |
return trace_handle_return(s); \ |
80decc70a tracing: Move pri... |
301 |
} \ |
3ad017bac tracing: Rename f... |
302 |
static struct trace_event_functions trace_event_type_funcs_##call = { \ |
892c505aa tracing: Rename f... |
303 |
.trace = trace_raw_output_##call, \ |
80decc70a tracing: Move pri... |
304 |
}; |
ff038f5c3 tracing: Create n... |
305 |
|
e5bc97216 tracing: Create n... |
306 307 |
#undef DEFINE_EVENT_PRINT #define DEFINE_EVENT_PRINT(template, call, proto, args, print) \ |
83f0d5399 tracing: Add notr... |
308 |
static notrace enum print_line_t \ |
892c505aa tracing: Rename f... |
309 |
trace_raw_output_##call(struct trace_iterator *iter, int flags, \ |
a9a577638 tracing: Allow ev... |
310 |
struct trace_event *event) \ |
e5bc97216 tracing: Create n... |
311 |
{ \ |
a72377657 tracing: Rename f... |
312 |
struct trace_event_raw_##template *field; \ |
e5bc97216 tracing: Create n... |
313 |
struct trace_entry *entry; \ |
bc289ae98 tracing: Reduce l... |
314 |
struct trace_seq *p = &iter->tmp_seq; \ |
e5bc97216 tracing: Create n... |
315 316 317 |
\ entry = iter->ent; \ \ |
32c0edaea tracing: Remove d... |
318 |
if (entry->type != event_##call.event.type) { \ |
f42c85e74 tracing/events: m... |
319 320 321 322 323 324 |
WARN_ON_ONCE(1); \ return TRACE_TYPE_UNHANDLED; \ } \ \ field = (typeof(field))entry; \ \ |
56d8bd3f0 tracing: fix mult... |
325 |
trace_seq_init(p); \ |
892c505aa tracing: Rename f... |
326 |
return trace_output_call(iter, #call, print); \ |
80decc70a tracing: Move pri... |
327 |
} \ |
3ad017bac tracing: Rename f... |
328 |
static struct trace_event_functions trace_event_type_funcs_##call = { \ |
892c505aa tracing: Rename f... |
329 |
.trace = trace_raw_output_##call, \ |
80decc70a tracing: Move pri... |
330 |
}; |
e5bc97216 tracing: Create n... |
331 |
|
f42c85e74 tracing/events: m... |
332 |
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
43b51ead3 tracing/filters: ... |
333 334 |
#undef __field_ext #define __field_ext(type, item, filter_type) \ |
f42c85e74 tracing/events: m... |
335 336 |
ret = trace_define_field(event_call, #type, #item, \ offsetof(typeof(field), item), \ |
43b51ead3 tracing/filters: ... |
337 338 |
sizeof(field.item), \ is_signed_type(type), filter_type); \ |
f42c85e74 tracing/events: m... |
339 340 |
if (ret) \ return ret; |
4d4c9cc83 tracing: Add __fi... |
341 342 343 344 345 346 347 348 |
#undef __field_struct_ext #define __field_struct_ext(type, item, filter_type) \ ret = trace_define_field(event_call, #type, #item, \ offsetof(typeof(field), item), \ sizeof(field.item), \ 0, filter_type); \ if (ret) \ return ret; |
43b51ead3 tracing/filters: ... |
349 350 |
#undef __field #define __field(type, item) __field_ext(type, item, FILTER_OTHER) |
4d4c9cc83 tracing: Add __fi... |
351 352 |
#undef __field_struct #define __field_struct(type, item) __field_struct_ext(type, item, FILTER_OTHER) |
f42c85e74 tracing/events: m... |
353 354 |
#undef __array #define __array(type, item, len) \ |
042957801 tracing/events: S... |
355 |
do { \ |
87291347c tracing: Fix arra... |
356 |
char *type_str = #type"["__stringify(len)"]"; \ |
042957801 tracing/events: S... |
357 |
BUILD_BUG_ON(len > MAX_FILTER_STR_VAL); \ |
87291347c tracing: Fix arra... |
358 |
ret = trace_define_field(event_call, type_str, #item, \ |
f42c85e74 tracing/events: m... |
359 |
offsetof(typeof(field), item), \ |
fb7ae981c tracing: Fix sign... |
360 361 |
sizeof(field.item), \ is_signed_type(type), FILTER_OTHER); \ |
042957801 tracing/events: S... |
362 363 364 |
if (ret) \ return ret; \ } while (0); |
f42c85e74 tracing/events: m... |
365 |
|
7fcb7c472 tracing/events: i... |
366 367 |
#undef __dynamic_array #define __dynamic_array(type, item, len) \ |
68fd60a8c tracing/events: a... |
368 |
ret = trace_define_field(event_call, "__data_loc " #type "[]", #item, \ |
43b51ead3 tracing/filters: ... |
369 |
offsetof(typeof(field), __data_loc_##item), \ |
fb7ae981c tracing: Fix sign... |
370 371 |
sizeof(field.__data_loc_##item), \ is_signed_type(type), FILTER_OTHER); |
7fcb7c472 tracing/events: i... |
372 |
|
9cbf11766 tracing/events: p... |
373 |
#undef __string |
7fcb7c472 tracing/events: i... |
374 |
#define __string(item, src) __dynamic_array(char, item, -1) |
9cbf11766 tracing/events: p... |
375 |
|
4449bf927 tracing: Add __bi... |
376 377 |
#undef __bitmask #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1) |
091ad3658 events: Rename TR... |
378 379 |
#undef DECLARE_EVENT_CLASS #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, func, print) \ |
7e4f44b15 tracing: Annotate... |
380 |
static int notrace __init \ |
33d0f35ee tracing: Rename f... |
381 |
trace_event_define_fields_##call(struct trace_event_call *event_call) \ |
f42c85e74 tracing/events: m... |
382 |
{ \ |
a72377657 tracing: Rename f... |
383 |
struct trace_event_raw_##call field; \ |
f42c85e74 tracing/events: m... |
384 385 |
int ret; \ \ |
f42c85e74 tracing/events: m... |
386 387 388 389 |
tstruct; \ \ return ret; \ } |
ff038f5c3 tracing: Create n... |
390 391 |
#undef DEFINE_EVENT #define DEFINE_EVENT(template, name, proto, args) |
e5bc97216 tracing: Create n... |
392 393 394 |
#undef DEFINE_EVENT_PRINT #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) |
f42c85e74 tracing/events: m... |
395 396 397 |
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE) /* |
7fcb7c472 tracing/events: i... |
398 399 400 401 402 403 404 405 |
* remember the offset of each array from the beginning of the event. */ #undef __entry #define __entry entry #undef __field #define __field(type, item) |
43b51ead3 tracing/filters: ... |
406 407 |
#undef __field_ext #define __field_ext(type, item, filter_type) |
4d4c9cc83 tracing: Add __fi... |
408 409 410 411 412 |
#undef __field_struct #define __field_struct(type, item) #undef __field_struct_ext #define __field_struct_ext(type, item, filter_type) |
7fcb7c472 tracing/events: i... |
413 414 415 416 417 |
#undef __array #define __array(type, item, len) #undef __dynamic_array #define __dynamic_array(type, item, len) \ |
114e7b52d tracing: Evaluate... |
418 |
__item_length = (len) * sizeof(type); \ |
7fcb7c472 tracing/events: i... |
419 420 |
__data_offsets->item = __data_size + \ offsetof(typeof(*entry), __data); \ |
114e7b52d tracing: Evaluate... |
421 422 |
__data_offsets->item |= __item_length << 16; \ __data_size += __item_length; |
7fcb7c472 tracing/events: i... |
423 424 |
#undef __string |
4e58e5475 tracing: Allow ev... |
425 426 |
#define __string(item, src) __dynamic_array(char, item, \ strlen((src) ? (const char *)(src) : "(null)") + 1) |
7fcb7c472 tracing/events: i... |
427 |
|
4449bf927 tracing: Add __bi... |
428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 |
/* * __bitmask_size_in_bytes_raw is the number of bytes needed to hold * num_possible_cpus(). */ #define __bitmask_size_in_bytes_raw(nr_bits) \ (((nr_bits) + 7) / 8) #define __bitmask_size_in_longs(nr_bits) \ ((__bitmask_size_in_bytes_raw(nr_bits) + \ ((BITS_PER_LONG / 8) - 1)) / (BITS_PER_LONG / 8)) /* * __bitmask_size_in_bytes is the number of bytes needed to hold * num_possible_cpus() padded out to the nearest long. This is what * is saved in the buffer, just to be consistent. */ #define __bitmask_size_in_bytes(nr_bits) \ (__bitmask_size_in_longs(nr_bits) * (BITS_PER_LONG / 8)) #undef __bitmask #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, \ __bitmask_size_in_longs(nr_bits)) |
091ad3658 events: Rename TR... |
450 451 |
#undef DECLARE_EVENT_CLASS #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ |
d0ee8f4a1 tracing: Rename f... |
452 |
static inline notrace int trace_event_get_offsets_##call( \ |
62323a148 tracing: Rename f... |
453 |
struct trace_event_data_offsets_##call *__data_offsets, proto) \ |
7fcb7c472 tracing/events: i... |
454 455 |
{ \ int __data_size = 0; \ |
114e7b52d tracing: Evaluate... |
456 |
int __maybe_unused __item_length; \ |
a72377657 tracing: Rename f... |
457 |
struct trace_event_raw_##call __maybe_unused *entry; \ |
7fcb7c472 tracing/events: i... |
458 459 460 461 462 |
\ tstruct; \ \ return __data_size; \ } |
ff038f5c3 tracing: Create n... |
463 464 |
#undef DEFINE_EVENT #define DEFINE_EVENT(template, name, proto, args) |
e5bc97216 tracing: Create n... |
465 466 467 |
#undef DEFINE_EVENT_PRINT #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) |
7fcb7c472 tracing/events: i... |
468 |
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
46ac51822 tracing: Move non... |
469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 |
/* * Stage 4 of the trace events. * * Override the macros in <trace/trace_events.h> to include the following: * * For those macros defined with TRACE_EVENT: * * static struct trace_event_call event_<call>; * * static void trace_event_raw_event_<call>(void *__data, proto) * { * struct trace_event_file *trace_file = __data; * struct trace_event_call *event_call = trace_file->event_call; * struct trace_event_data_offsets_<call> __maybe_unused __data_offsets; * unsigned long eflags = trace_file->flags; * enum event_trigger_type __tt = ETT_NONE; * struct ring_buffer_event *event; * struct trace_event_raw_<call> *entry; <-- defined in stage 1 * struct ring_buffer *buffer; * unsigned long irq_flags; * int __data_size; * int pc; * * if (!(eflags & EVENT_FILE_FL_TRIGGER_COND)) { * if (eflags & EVENT_FILE_FL_TRIGGER_MODE) * event_triggers_call(trace_file, NULL); * if (eflags & EVENT_FILE_FL_SOFT_DISABLED) * return; * } * * local_save_flags(irq_flags); * pc = preempt_count(); * * __data_size = trace_event_get_offsets_<call>(&__data_offsets, args); * * event = trace_event_buffer_lock_reserve(&buffer, trace_file, * event_<call>->event.type, * sizeof(*entry) + __data_size, * irq_flags, pc); * if (!event) * return; * entry = ring_buffer_event_data(event); * * { <assign>; } <-- Here we assign the entries by the __field and * __array macros. * * if (eflags & EVENT_FILE_FL_TRIGGER_COND) * __tt = event_triggers_call(trace_file, entry); * * if (test_bit(EVENT_FILE_FL_SOFT_DISABLED_BIT, * &trace_file->flags)) * ring_buffer_discard_commit(buffer, event); * else if (!filter_check_discard(trace_file, entry, buffer, event)) * trace_buffer_unlock_commit(buffer, event, irq_flags, pc); * * if (__tt) * event_triggers_post_call(trace_file, __tt); * } * * static struct trace_event ftrace_event_type_<call> = { * .trace = trace_raw_output_<call>, <-- stage 2 * }; * * static char print_fmt_<call>[] = <TP_printk>; * * static struct trace_event_class __used event_class_<template> = { * .system = "<system>", * .define_fields = trace_event_define_fields_<call>, * .fields = LIST_HEAD_INIT(event_class_##call.fields), * .raw_init = trace_event_raw_init, * .probe = trace_event_raw_event_##call, * .reg = trace_event_reg, * }; * * static struct trace_event_call event_<call> = { * .class = event_class_<template>, * { * .tp = &__tracepoint_<call>, * }, * .event = &ftrace_event_type_<call>, * .print_fmt = print_fmt_<call>, * .flags = TRACE_EVENT_FL_TRACEPOINT, * }; * // its only safe to use pointers when doing linker tricks to * // create an array. * static struct trace_event_call __used * __attribute__((section("_ftrace_events"))) *__event_<call> = &event_<call>; * */ #ifdef CONFIG_PERF_EVENTS #define _TRACE_PERF_PROTO(call, proto) \ static notrace void \ perf_trace_##call(void *__data, proto); #define _TRACE_PERF_INIT(call) \ .perf_probe = perf_trace_##call, #else #define _TRACE_PERF_PROTO(call, proto) #define _TRACE_PERF_INIT(call) #endif /* CONFIG_PERF_EVENTS */ #undef __entry #define __entry entry #undef __field #define __field(type, item) #undef __field_struct #define __field_struct(type, item) #undef __array #define __array(type, item, len) #undef __dynamic_array #define __dynamic_array(type, item, len) \ __entry->__data_loc_##item = __data_offsets.item; #undef __string #define __string(item, src) __dynamic_array(char, item, -1) #undef __assign_str #define __assign_str(dst, src) \ strcpy(__get_str(dst), (src) ? (const char *)(src) : "(null)"); #undef __bitmask #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1) #undef __get_bitmask #define __get_bitmask(field) (char *)__get_dynamic_array(field) #undef __assign_bitmask #define __assign_bitmask(dst, src, nr_bits) \ memcpy(__get_bitmask(dst), (src), __bitmask_size_in_bytes(nr_bits)) #undef TP_fast_assign #define TP_fast_assign(args...) args |
46ac51822 tracing: Move non... |
608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 |
#undef __perf_count #define __perf_count(c) (c) #undef __perf_task #define __perf_task(t) (t) #undef DECLARE_EVENT_CLASS #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ \ static notrace void \ trace_event_raw_event_##call(void *__data, proto) \ { \ struct trace_event_file *trace_file = __data; \ struct trace_event_data_offsets_##call __maybe_unused __data_offsets;\ struct trace_event_buffer fbuffer; \ struct trace_event_raw_##call *entry; \ int __data_size; \ \ if (trace_trigger_soft_disabled(trace_file)) \ return; \ \ __data_size = trace_event_get_offsets_##call(&__data_offsets, args); \ \ entry = trace_event_buffer_reserve(&fbuffer, trace_file, \ sizeof(*entry) + __data_size); \ \ if (!entry) \ return; \ \ tstruct \ \ { assign; } \ \ trace_event_buffer_commit(&fbuffer); \ } /* * The ftrace_test_probe is compiled out, it is only here as a build time check * to make sure that if the tracepoint handling changes, the ftrace probe will * fail to compile unless it too is updated. */ #undef DEFINE_EVENT #define DEFINE_EVENT(template, call, proto, args) \ static inline void ftrace_test_probe_##call(void) \ { \ check_trace_callback_type_##call(trace_event_raw_event_##template); \ } #undef DEFINE_EVENT_PRINT #define DEFINE_EVENT_PRINT(template, name, proto, args, print) #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) #undef __entry #define __entry REC #undef __print_flags #undef __print_symbolic #undef __print_hex #undef __get_dynamic_array #undef __get_dynamic_array_len #undef __get_str #undef __get_bitmask #undef __print_array #undef TP_printk #define TP_printk(fmt, args...) "\"" fmt "\", " __stringify(args) #undef DECLARE_EVENT_CLASS #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ _TRACE_PERF_PROTO(call, PARAMS(proto)); \ static char print_fmt_##call[] = print; \ static struct trace_event_class __used __refdata event_class_##call = { \ .system = TRACE_SYSTEM_STRING, \ .define_fields = trace_event_define_fields_##call, \ .fields = LIST_HEAD_INIT(event_class_##call.fields),\ .raw_init = trace_event_raw_init, \ .probe = trace_event_raw_event_##call, \ .reg = trace_event_reg, \ _TRACE_PERF_INIT(call) \ }; #undef DEFINE_EVENT #define DEFINE_EVENT(template, call, proto, args) \ \ static struct trace_event_call __used event_##call = { \ .class = &event_class_##template, \ { \ .tp = &__tracepoint_##call, \ }, \ .event.funcs = &trace_event_type_funcs_##template, \ .print_fmt = print_fmt_##template, \ .flags = TRACE_EVENT_FL_TRACEPOINT, \ }; \ static struct trace_event_call __used \ __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call #undef DEFINE_EVENT_PRINT #define DEFINE_EVENT_PRINT(template, call, proto, args, print) \ \ static char print_fmt_##call[] = print; \ \ static struct trace_event_call __used event_##call = { \ .class = &event_class_##template, \ { \ .tp = &__tracepoint_##call, \ }, \ .event.funcs = &trace_event_type_funcs_##call, \ .print_fmt = print_fmt_##call, \ .flags = TRACE_EVENT_FL_TRACEPOINT, \ }; \ static struct trace_event_call __used \ __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |