Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Stage 1 of the trace events. |
| 3 | * |
| 4 | * Override the macros in <trace/trace_events.h> to include the following: |
| 5 | * |
Steven Rostedt (Red Hat) | a723776 | 2015-05-13 15:27:47 -0400 | [diff] [blame] | 6 | * struct trace_event_raw_<call> { |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 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 | |
Steven Rostedt (Red Hat) | af658dc | 2015-04-29 14:36:05 -0400 | [diff] [blame] | 19 | #include <linux/trace_events.h> |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 20 | |
Steven Rostedt (Red Hat) | acd388f | 2015-03-31 14:37:12 -0400 | [diff] [blame] | 21 | #ifndef TRACE_SYSTEM_VAR |
| 22 | #define TRACE_SYSTEM_VAR TRACE_SYSTEM |
| 23 | #endif |
| 24 | |
| 25 | #define __app__(x, y) str__##x##y |
| 26 | #define __app(x, y) __app__(x, y) |
| 27 | |
| 28 | #define TRACE_SYSTEM_STRING __app(TRACE_SYSTEM_VAR,__trace_system_name) |
| 29 | |
| 30 | #define TRACE_MAKE_SYSTEM_STR() \ |
| 31 | static const char TRACE_SYSTEM_STRING[] = \ |
| 32 | __stringify(TRACE_SYSTEM) |
| 33 | |
| 34 | TRACE_MAKE_SYSTEM_STR(); |
| 35 | |
Steven Rostedt (Red Hat) | 0c564a5 | 2015-03-24 17:58:09 -0400 | [diff] [blame] | 36 | #undef TRACE_DEFINE_ENUM |
| 37 | #define TRACE_DEFINE_ENUM(a) \ |
| 38 | static struct trace_enum_map __used __initdata \ |
| 39 | __##TRACE_SYSTEM##_##a = \ |
| 40 | { \ |
| 41 | .system = TRACE_SYSTEM_STRING, \ |
| 42 | .enum_string = #a, \ |
| 43 | .enum_value = a \ |
| 44 | }; \ |
| 45 | static struct trace_enum_map __used \ |
| 46 | __attribute__((section("_ftrace_enum_map"))) \ |
| 47 | *TRACE_SYSTEM##_##a = &__##TRACE_SYSTEM##_##a |
| 48 | |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 49 | /* |
Ingo Molnar | 091ad36 | 2009-11-26 09:04:55 +0100 | [diff] [blame] | 50 | * DECLARE_EVENT_CLASS can be used to add a generic function |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 51 | * handlers for events. That is, if all events have the same |
| 52 | * parameters and just have distinct trace points. |
| 53 | * Each tracepoint can be defined with DEFINE_EVENT and that |
Ingo Molnar | 091ad36 | 2009-11-26 09:04:55 +0100 | [diff] [blame] | 54 | * will map the DECLARE_EVENT_CLASS to the tracepoint. |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 55 | * |
| 56 | * TRACE_EVENT is a one to one mapping between tracepoint and template. |
| 57 | */ |
| 58 | #undef TRACE_EVENT |
| 59 | #define TRACE_EVENT(name, proto, args, tstruct, assign, print) \ |
Ingo Molnar | 091ad36 | 2009-11-26 09:04:55 +0100 | [diff] [blame] | 60 | DECLARE_EVENT_CLASS(name, \ |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 61 | PARAMS(proto), \ |
| 62 | PARAMS(args), \ |
| 63 | PARAMS(tstruct), \ |
| 64 | PARAMS(assign), \ |
| 65 | PARAMS(print)); \ |
| 66 | DEFINE_EVENT(name, name, PARAMS(proto), PARAMS(args)); |
| 67 | |
| 68 | |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 69 | #undef __field |
| 70 | #define __field(type, item) type item; |
| 71 | |
Li Zefan | 43b51ea | 2009-08-07 10:33:22 +0800 | [diff] [blame] | 72 | #undef __field_ext |
| 73 | #define __field_ext(type, item, filter_type) type item; |
| 74 | |
Steven Rostedt | 4d4c9cc | 2014-06-17 08:59:16 -0400 | [diff] [blame] | 75 | #undef __field_struct |
| 76 | #define __field_struct(type, item) type item; |
| 77 | |
| 78 | #undef __field_struct_ext |
| 79 | #define __field_struct_ext(type, item, filter_type) type item; |
| 80 | |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 81 | #undef __array |
| 82 | #define __array(type, item, len) type item[len]; |
| 83 | |
| 84 | #undef __dynamic_array |
Li Zefan | 7d536cb | 2009-07-16 10:54:02 +0800 | [diff] [blame] | 85 | #define __dynamic_array(type, item, len) u32 __data_loc_##item; |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 86 | |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 87 | #undef __string |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 88 | #define __string(item, src) __dynamic_array(char, item, -1) |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 89 | |
Steven Rostedt (Red Hat) | 4449bf9 | 2014-05-06 13:10:24 -0400 | [diff] [blame] | 90 | #undef __bitmask |
| 91 | #define __bitmask(item, nr_bits) __dynamic_array(char, item, -1) |
| 92 | |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 93 | #undef TP_STRUCT__entry |
| 94 | #define TP_STRUCT__entry(args...) args |
| 95 | |
Ingo Molnar | 091ad36 | 2009-11-26 09:04:55 +0100 | [diff] [blame] | 96 | #undef DECLARE_EVENT_CLASS |
| 97 | #define DECLARE_EVENT_CLASS(name, proto, args, tstruct, assign, print) \ |
Steven Rostedt (Red Hat) | a723776 | 2015-05-13 15:27:47 -0400 | [diff] [blame] | 98 | struct trace_event_raw_##name { \ |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 99 | struct trace_entry ent; \ |
| 100 | tstruct \ |
| 101 | char __data[0]; \ |
Steven Rostedt | 8f08201 | 2010-04-20 10:47:33 -0400 | [diff] [blame] | 102 | }; \ |
| 103 | \ |
Steven Rostedt (Red Hat) | 2425bcb | 2015-05-05 11:45:27 -0400 | [diff] [blame] | 104 | static struct trace_event_class event_class_##name; |
Steven Rostedt | 8f08201 | 2010-04-20 10:47:33 -0400 | [diff] [blame] | 105 | |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 106 | #undef DEFINE_EVENT |
| 107 | #define DEFINE_EVENT(template, name, proto, args) \ |
Steven Rostedt (Red Hat) | 2425bcb | 2015-05-05 11:45:27 -0400 | [diff] [blame] | 108 | static struct trace_event_call __used \ |
Jeff Mahoney | 86c38a3 | 2010-02-24 13:59:23 -0500 | [diff] [blame] | 109 | __attribute__((__aligned__(4))) event_##name |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 110 | |
Steven Rostedt | f5abaa1 | 2013-06-20 11:44:44 -0400 | [diff] [blame] | 111 | #undef DEFINE_EVENT_FN |
| 112 | #define DEFINE_EVENT_FN(template, name, proto, args, reg, unreg) \ |
| 113 | DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) |
| 114 | |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 115 | #undef DEFINE_EVENT_PRINT |
| 116 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ |
| 117 | DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) |
| 118 | |
Josh Stone | 9741987 | 2009-08-24 14:43:13 -0700 | [diff] [blame] | 119 | /* Callbacks are meaningless to ftrace. */ |
| 120 | #undef TRACE_EVENT_FN |
Frederic Weisbecker | 0dd7b74 | 2009-08-28 00:50:06 +0200 | [diff] [blame] | 121 | #define TRACE_EVENT_FN(name, proto, args, tstruct, \ |
| 122 | assign, print, reg, unreg) \ |
Frederic Weisbecker | 819ce45 | 2010-07-20 18:41:24 +0200 | [diff] [blame] | 123 | TRACE_EVENT(name, PARAMS(proto), PARAMS(args), \ |
| 124 | PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \ |
Josh Stone | 9741987 | 2009-08-24 14:43:13 -0700 | [diff] [blame] | 125 | |
Denis Kirjanov | 2701121 | 2015-12-14 23:18:05 +0300 | [diff] [blame] | 126 | #undef TRACE_EVENT_FN_COND |
| 127 | #define TRACE_EVENT_FN_COND(name, proto, args, cond, tstruct, \ |
| 128 | assign, print, reg, unreg) \ |
| 129 | TRACE_EVENT_CONDITION(name, PARAMS(proto), PARAMS(args), PARAMS(cond), \ |
| 130 | PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \ |
| 131 | |
Frederic Weisbecker | 1ed0c59 | 2010-11-18 01:46:57 +0100 | [diff] [blame] | 132 | #undef TRACE_EVENT_FLAGS |
| 133 | #define TRACE_EVENT_FLAGS(name, value) \ |
Frederic Weisbecker | 53cf810b | 2010-11-18 02:11:42 +0100 | [diff] [blame] | 134 | __TRACE_EVENT_FLAGS(name, value) |
Frederic Weisbecker | 1ed0c59 | 2010-11-18 01:46:57 +0100 | [diff] [blame] | 135 | |
Peter Zijlstra | d5b5f39 | 2013-11-14 16:23:04 +0100 | [diff] [blame] | 136 | #undef TRACE_EVENT_PERF_PERM |
| 137 | #define TRACE_EVENT_PERF_PERM(name, expr...) \ |
| 138 | __TRACE_EVENT_PERF_PERM(name, expr) |
| 139 | |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 140 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
| 141 | |
| 142 | /* |
| 143 | * Stage 2 of the trace events. |
| 144 | * |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 145 | * Include the following: |
| 146 | * |
Steven Rostedt (Red Hat) | 62323a1 | 2015-05-13 15:33:52 -0400 | [diff] [blame] | 147 | * struct trace_event_data_offsets_<call> { |
Li Zefan | 7d536cb | 2009-07-16 10:54:02 +0800 | [diff] [blame] | 148 | * u32 <item1>; |
| 149 | * u32 <item2>; |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 150 | * [...] |
| 151 | * }; |
| 152 | * |
Li Zefan | 7d536cb | 2009-07-16 10:54:02 +0800 | [diff] [blame] | 153 | * The __dynamic_array() macro will create each u32 <item>, this is |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 154 | * to keep the offset of each array from the beginning of the event. |
Li Zefan | 7d536cb | 2009-07-16 10:54:02 +0800 | [diff] [blame] | 155 | * The size of an array is also encoded, in the higher 16 bits of <item>. |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 156 | */ |
| 157 | |
Steven Rostedt (Red Hat) | 0c564a5 | 2015-03-24 17:58:09 -0400 | [diff] [blame] | 158 | #undef TRACE_DEFINE_ENUM |
| 159 | #define TRACE_DEFINE_ENUM(a) |
| 160 | |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 161 | #undef __field |
Li Zefan | 43b51ea | 2009-08-07 10:33:22 +0800 | [diff] [blame] | 162 | #define __field(type, item) |
| 163 | |
| 164 | #undef __field_ext |
| 165 | #define __field_ext(type, item, filter_type) |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 166 | |
Steven Rostedt | 4d4c9cc | 2014-06-17 08:59:16 -0400 | [diff] [blame] | 167 | #undef __field_struct |
| 168 | #define __field_struct(type, item) |
| 169 | |
| 170 | #undef __field_struct_ext |
| 171 | #define __field_struct_ext(type, item, filter_type) |
| 172 | |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 173 | #undef __array |
| 174 | #define __array(type, item, len) |
| 175 | |
| 176 | #undef __dynamic_array |
Li Zefan | 7d536cb | 2009-07-16 10:54:02 +0800 | [diff] [blame] | 177 | #define __dynamic_array(type, item, len) u32 item; |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 178 | |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 179 | #undef __string |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 180 | #define __string(item, src) __dynamic_array(char, item, -1) |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 181 | |
Steven Rostedt (Red Hat) | 4449bf9 | 2014-05-06 13:10:24 -0400 | [diff] [blame] | 182 | #undef __bitmask |
| 183 | #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1) |
| 184 | |
Ingo Molnar | 091ad36 | 2009-11-26 09:04:55 +0100 | [diff] [blame] | 185 | #undef DECLARE_EVENT_CLASS |
| 186 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ |
Steven Rostedt (Red Hat) | 62323a1 | 2015-05-13 15:33:52 -0400 | [diff] [blame] | 187 | struct trace_event_data_offsets_##call { \ |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 188 | tstruct; \ |
| 189 | }; |
| 190 | |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 191 | #undef DEFINE_EVENT |
| 192 | #define DEFINE_EVENT(template, name, proto, args) |
| 193 | |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 194 | #undef DEFINE_EVENT_PRINT |
| 195 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ |
| 196 | DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) |
| 197 | |
Frederic Weisbecker | 1ed0c59 | 2010-11-18 01:46:57 +0100 | [diff] [blame] | 198 | #undef TRACE_EVENT_FLAGS |
| 199 | #define TRACE_EVENT_FLAGS(event, flag) |
| 200 | |
Peter Zijlstra | d5b5f39 | 2013-11-14 16:23:04 +0100 | [diff] [blame] | 201 | #undef TRACE_EVENT_PERF_PERM |
| 202 | #define TRACE_EVENT_PERF_PERM(event, expr...) |
| 203 | |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 204 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
| 205 | |
| 206 | /* |
| 207 | * Stage 3 of the trace events. |
| 208 | * |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 209 | * Override the macros in <trace/trace_events.h> to include the following: |
| 210 | * |
| 211 | * enum print_line_t |
Steven Rostedt (Red Hat) | 892c505 | 2015-05-05 14:18:11 -0400 | [diff] [blame] | 212 | * trace_raw_output_<call>(struct trace_iterator *iter, int flags) |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 213 | * { |
| 214 | * struct trace_seq *s = &iter->seq; |
Steven Rostedt (Red Hat) | a723776 | 2015-05-13 15:27:47 -0400 | [diff] [blame] | 215 | * struct trace_event_raw_<call> *field; <-- defined in stage 1 |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 216 | * struct trace_entry *entry; |
Lai Jiangshan | bc289ae | 2010-06-03 18:26:24 +0800 | [diff] [blame] | 217 | * struct trace_seq *p = &iter->tmp_seq; |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 218 | * int ret; |
| 219 | * |
| 220 | * entry = iter->ent; |
| 221 | * |
Steven Rostedt | 32c0eda | 2010-04-23 10:38:03 -0400 | [diff] [blame] | 222 | * if (entry->type != event_<call>->event.type) { |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 223 | * WARN_ON_ONCE(1); |
| 224 | * return TRACE_TYPE_UNHANDLED; |
| 225 | * } |
| 226 | * |
| 227 | * field = (typeof(field))entry; |
| 228 | * |
Steven Whitehouse | 56d8bd3 | 2009-06-03 14:52:03 +0100 | [diff] [blame] | 229 | * trace_seq_init(p); |
Li Zefan | 50354a8 | 2010-03-24 10:58:24 +0800 | [diff] [blame] | 230 | * ret = trace_seq_printf(s, "%s: ", <call>); |
| 231 | * if (ret) |
| 232 | * ret = trace_seq_printf(s, <TP_printk> "\n"); |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 233 | * if (!ret) |
| 234 | * return TRACE_TYPE_PARTIAL_LINE; |
| 235 | * |
| 236 | * return TRACE_TYPE_HANDLED; |
| 237 | * } |
| 238 | * |
| 239 | * This is the method used to print the raw event to the trace |
| 240 | * output format. Note, this is not needed if the data is read |
| 241 | * in binary. |
| 242 | */ |
| 243 | |
| 244 | #undef __entry |
| 245 | #define __entry field |
| 246 | |
| 247 | #undef TP_printk |
| 248 | #define TP_printk(fmt, args...) fmt "\n", args |
| 249 | |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 250 | #undef __get_dynamic_array |
| 251 | #define __get_dynamic_array(field) \ |
Li Zefan | 7d536cb | 2009-07-16 10:54:02 +0800 | [diff] [blame] | 252 | ((void *)__entry + (__entry->__data_loc_##field & 0xffff)) |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 253 | |
Steven Rostedt (Red Hat) | beba4bb | 2014-06-04 14:29:33 -0400 | [diff] [blame] | 254 | #undef __get_dynamic_array_len |
| 255 | #define __get_dynamic_array_len(field) \ |
| 256 | ((__entry->__data_loc_##field >> 16) & 0xffff) |
| 257 | |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 258 | #undef __get_str |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 259 | #define __get_str(field) (char *)__get_dynamic_array(field) |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 260 | |
Steven Rostedt (Red Hat) | 4449bf9 | 2014-05-06 13:10:24 -0400 | [diff] [blame] | 261 | #undef __get_bitmask |
| 262 | #define __get_bitmask(field) \ |
| 263 | ({ \ |
| 264 | void *__bitmask = __get_dynamic_array(field); \ |
| 265 | unsigned int __bitmask_size; \ |
Steven Rostedt (Red Hat) | beba4bb | 2014-06-04 14:29:33 -0400 | [diff] [blame] | 266 | __bitmask_size = __get_dynamic_array_len(field); \ |
Steven Rostedt (Red Hat) | 645df98 | 2015-05-04 18:12:44 -0400 | [diff] [blame] | 267 | trace_print_bitmask_seq(p, __bitmask, __bitmask_size); \ |
Steven Rostedt (Red Hat) | 4449bf9 | 2014-05-06 13:10:24 -0400 | [diff] [blame] | 268 | }) |
| 269 | |
Steven Rostedt | be74b73 | 2009-05-26 20:25:22 +0200 | [diff] [blame] | 270 | #undef __print_flags |
| 271 | #define __print_flags(flag, delim, flag_array...) \ |
| 272 | ({ \ |
Steven Rostedt | a48f494 | 2009-09-14 11:18:02 -0400 | [diff] [blame] | 273 | static const struct trace_print_flags __flags[] = \ |
Steven Rostedt | be74b73 | 2009-05-26 20:25:22 +0200 | [diff] [blame] | 274 | { flag_array, { -1, NULL }}; \ |
Steven Rostedt (Red Hat) | 645df98 | 2015-05-04 18:12:44 -0400 | [diff] [blame] | 275 | trace_print_flags_seq(p, delim, flag, __flags); \ |
Steven Rostedt | be74b73 | 2009-05-26 20:25:22 +0200 | [diff] [blame] | 276 | }) |
| 277 | |
Steven Rostedt | 0f4fc29 | 2009-05-20 19:21:47 -0400 | [diff] [blame] | 278 | #undef __print_symbolic |
| 279 | #define __print_symbolic(value, symbol_array...) \ |
| 280 | ({ \ |
| 281 | static const struct trace_print_flags symbols[] = \ |
| 282 | { symbol_array, { -1, NULL }}; \ |
Steven Rostedt (Red Hat) | 645df98 | 2015-05-04 18:12:44 -0400 | [diff] [blame] | 283 | trace_print_symbols_seq(p, value, symbols); \ |
Steven Rostedt | 0f4fc29 | 2009-05-20 19:21:47 -0400 | [diff] [blame] | 284 | }) |
| 285 | |
liubo | 2fc1b6f | 2011-04-19 09:35:28 +0800 | [diff] [blame] | 286 | #undef __print_symbolic_u64 |
| 287 | #if BITS_PER_LONG == 32 |
| 288 | #define __print_symbolic_u64(value, symbol_array...) \ |
| 289 | ({ \ |
| 290 | static const struct trace_print_flags_u64 symbols[] = \ |
| 291 | { symbol_array, { -1, NULL } }; \ |
Steven Rostedt (Red Hat) | 645df98 | 2015-05-04 18:12:44 -0400 | [diff] [blame] | 292 | trace_print_symbols_seq_u64(p, value, symbols); \ |
liubo | 2fc1b6f | 2011-04-19 09:35:28 +0800 | [diff] [blame] | 293 | }) |
| 294 | #else |
| 295 | #define __print_symbolic_u64(value, symbol_array...) \ |
| 296 | __print_symbolic(value, symbol_array) |
| 297 | #endif |
| 298 | |
Kei Tokunaga | 5a2e399 | 2010-04-01 20:40:58 +0900 | [diff] [blame] | 299 | #undef __print_hex |
Steven Rostedt (Red Hat) | 645df98 | 2015-05-04 18:12:44 -0400 | [diff] [blame] | 300 | #define __print_hex(buf, buf_len) trace_print_hex_seq(p, buf, buf_len) |
Kei Tokunaga | 5a2e399 | 2010-04-01 20:40:58 +0900 | [diff] [blame] | 301 | |
Dave Martin | 6ea2248 | 2015-01-28 12:48:53 +0000 | [diff] [blame] | 302 | #undef __print_array |
| 303 | #define __print_array(array, count, el_size) \ |
| 304 | ({ \ |
| 305 | BUILD_BUG_ON(el_size != 1 && el_size != 2 && \ |
| 306 | el_size != 4 && el_size != 8); \ |
Steven Rostedt (Red Hat) | 645df98 | 2015-05-04 18:12:44 -0400 | [diff] [blame] | 307 | trace_print_array_seq(p, array, count, el_size); \ |
Dave Martin | 6ea2248 | 2015-01-28 12:48:53 +0000 | [diff] [blame] | 308 | }) |
| 309 | |
Ingo Molnar | 091ad36 | 2009-11-26 09:04:55 +0100 | [diff] [blame] | 310 | #undef DECLARE_EVENT_CLASS |
| 311 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ |
Steven Rostedt | 83f0d53 | 2010-02-16 10:38:47 -0500 | [diff] [blame] | 312 | static notrace enum print_line_t \ |
Steven Rostedt (Red Hat) | 892c505 | 2015-05-05 14:18:11 -0400 | [diff] [blame] | 313 | trace_raw_output_##call(struct trace_iterator *iter, int flags, \ |
| 314 | struct trace_event *trace_event) \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 315 | { \ |
| 316 | struct trace_seq *s = &iter->seq; \ |
Li Zefan | f71130d | 2013-02-21 10:32:38 +0800 | [diff] [blame] | 317 | struct trace_seq __maybe_unused *p = &iter->tmp_seq; \ |
Steven Rostedt (Red Hat) | a723776 | 2015-05-13 15:27:47 -0400 | [diff] [blame] | 318 | struct trace_event_raw_##call *field; \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 319 | int ret; \ |
| 320 | \ |
Li Zefan | f71130d | 2013-02-21 10:32:38 +0800 | [diff] [blame] | 321 | field = (typeof(field))iter->ent; \ |
Steven Rostedt | 80decc7 | 2010-04-23 10:00:22 -0400 | [diff] [blame] | 322 | \ |
Steven Rostedt (Red Hat) | 892c505 | 2015-05-05 14:18:11 -0400 | [diff] [blame] | 323 | ret = trace_raw_output_prep(iter, trace_event); \ |
Steven Rostedt (Red Hat) | 8e2e095 | 2014-11-14 11:42:06 -0500 | [diff] [blame] | 324 | if (ret != TRACE_TYPE_HANDLED) \ |
Li Zefan | f71130d | 2013-02-21 10:32:38 +0800 | [diff] [blame] | 325 | return ret; \ |
| 326 | \ |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 327 | trace_seq_printf(s, print); \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 328 | \ |
Steven Rostedt (Red Hat) | 19a7fe2 | 2014-11-12 10:29:54 -0500 | [diff] [blame] | 329 | return trace_handle_return(s); \ |
Steven Rostedt | 80decc7 | 2010-04-23 10:00:22 -0400 | [diff] [blame] | 330 | } \ |
Steven Rostedt (Red Hat) | 3ad017b | 2015-05-13 15:35:44 -0400 | [diff] [blame] | 331 | static struct trace_event_functions trace_event_type_funcs_##call = { \ |
Steven Rostedt (Red Hat) | 892c505 | 2015-05-05 14:18:11 -0400 | [diff] [blame] | 332 | .trace = trace_raw_output_##call, \ |
Steven Rostedt | 80decc7 | 2010-04-23 10:00:22 -0400 | [diff] [blame] | 333 | }; |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 334 | |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 335 | #undef DEFINE_EVENT_PRINT |
| 336 | #define DEFINE_EVENT_PRINT(template, call, proto, args, print) \ |
Steven Rostedt | 83f0d53 | 2010-02-16 10:38:47 -0500 | [diff] [blame] | 337 | static notrace enum print_line_t \ |
Steven Rostedt (Red Hat) | 892c505 | 2015-05-05 14:18:11 -0400 | [diff] [blame] | 338 | trace_raw_output_##call(struct trace_iterator *iter, int flags, \ |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 339 | struct trace_event *event) \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 340 | { \ |
Steven Rostedt (Red Hat) | a723776 | 2015-05-13 15:27:47 -0400 | [diff] [blame] | 341 | struct trace_event_raw_##template *field; \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 342 | struct trace_entry *entry; \ |
Lai Jiangshan | bc289ae | 2010-06-03 18:26:24 +0800 | [diff] [blame] | 343 | struct trace_seq *p = &iter->tmp_seq; \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 344 | \ |
| 345 | entry = iter->ent; \ |
| 346 | \ |
Steven Rostedt | 32c0eda | 2010-04-23 10:38:03 -0400 | [diff] [blame] | 347 | if (entry->type != event_##call.event.type) { \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 348 | WARN_ON_ONCE(1); \ |
| 349 | return TRACE_TYPE_UNHANDLED; \ |
| 350 | } \ |
| 351 | \ |
| 352 | field = (typeof(field))entry; \ |
| 353 | \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 354 | trace_seq_init(p); \ |
Steven Rostedt (Red Hat) | 892c505 | 2015-05-05 14:18:11 -0400 | [diff] [blame] | 355 | return trace_output_call(iter, #call, print); \ |
Steven Rostedt | 80decc7 | 2010-04-23 10:00:22 -0400 | [diff] [blame] | 356 | } \ |
Steven Rostedt (Red Hat) | 3ad017b | 2015-05-13 15:35:44 -0400 | [diff] [blame] | 357 | static struct trace_event_functions trace_event_type_funcs_##call = { \ |
Steven Rostedt (Red Hat) | 892c505 | 2015-05-05 14:18:11 -0400 | [diff] [blame] | 358 | .trace = trace_raw_output_##call, \ |
Steven Rostedt | 80decc7 | 2010-04-23 10:00:22 -0400 | [diff] [blame] | 359 | }; |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 360 | |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 361 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
| 362 | |
Li Zefan | 43b51ea | 2009-08-07 10:33:22 +0800 | [diff] [blame] | 363 | #undef __field_ext |
| 364 | #define __field_ext(type, item, filter_type) \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 365 | ret = trace_define_field(event_call, #type, #item, \ |
| 366 | offsetof(typeof(field), item), \ |
Li Zefan | 43b51ea | 2009-08-07 10:33:22 +0800 | [diff] [blame] | 367 | sizeof(field.item), \ |
| 368 | is_signed_type(type), filter_type); \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 369 | if (ret) \ |
| 370 | return ret; |
| 371 | |
Steven Rostedt | 4d4c9cc | 2014-06-17 08:59:16 -0400 | [diff] [blame] | 372 | #undef __field_struct_ext |
| 373 | #define __field_struct_ext(type, item, filter_type) \ |
| 374 | ret = trace_define_field(event_call, #type, #item, \ |
| 375 | offsetof(typeof(field), item), \ |
| 376 | sizeof(field.item), \ |
| 377 | 0, filter_type); \ |
| 378 | if (ret) \ |
| 379 | return ret; |
| 380 | |
Li Zefan | 43b51ea | 2009-08-07 10:33:22 +0800 | [diff] [blame] | 381 | #undef __field |
| 382 | #define __field(type, item) __field_ext(type, item, FILTER_OTHER) |
| 383 | |
Steven Rostedt | 4d4c9cc | 2014-06-17 08:59:16 -0400 | [diff] [blame] | 384 | #undef __field_struct |
| 385 | #define __field_struct(type, item) __field_struct_ext(type, item, FILTER_OTHER) |
| 386 | |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 387 | #undef __array |
| 388 | #define __array(type, item, len) \ |
Steven Rostedt | 0429578 | 2010-11-12 22:32:11 -0500 | [diff] [blame] | 389 | do { \ |
Vaibhav Nagarnaik | 8729134 | 2014-02-13 19:51:48 -0800 | [diff] [blame] | 390 | char *type_str = #type"["__stringify(len)"]"; \ |
Steven Rostedt | 0429578 | 2010-11-12 22:32:11 -0500 | [diff] [blame] | 391 | BUILD_BUG_ON(len > MAX_FILTER_STR_VAL); \ |
Vaibhav Nagarnaik | 8729134 | 2014-02-13 19:51:48 -0800 | [diff] [blame] | 392 | ret = trace_define_field(event_call, type_str, #item, \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 393 | offsetof(typeof(field), item), \ |
Lai Jiangshan | fb7ae98 | 2009-12-15 15:39:38 +0800 | [diff] [blame] | 394 | sizeof(field.item), \ |
| 395 | is_signed_type(type), FILTER_OTHER); \ |
Steven Rostedt | 0429578 | 2010-11-12 22:32:11 -0500 | [diff] [blame] | 396 | if (ret) \ |
| 397 | return ret; \ |
| 398 | } while (0); |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 399 | |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 400 | #undef __dynamic_array |
| 401 | #define __dynamic_array(type, item, len) \ |
Lai Jiangshan | 68fd60a | 2009-07-16 10:53:34 +0800 | [diff] [blame] | 402 | ret = trace_define_field(event_call, "__data_loc " #type "[]", #item, \ |
Li Zefan | 43b51ea | 2009-08-07 10:33:22 +0800 | [diff] [blame] | 403 | offsetof(typeof(field), __data_loc_##item), \ |
Lai Jiangshan | fb7ae98 | 2009-12-15 15:39:38 +0800 | [diff] [blame] | 404 | sizeof(field.__data_loc_##item), \ |
| 405 | is_signed_type(type), FILTER_OTHER); |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 406 | |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 407 | #undef __string |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 408 | #define __string(item, src) __dynamic_array(char, item, -1) |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 409 | |
Steven Rostedt (Red Hat) | 4449bf9 | 2014-05-06 13:10:24 -0400 | [diff] [blame] | 410 | #undef __bitmask |
| 411 | #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1) |
| 412 | |
Ingo Molnar | 091ad36 | 2009-11-26 09:04:55 +0100 | [diff] [blame] | 413 | #undef DECLARE_EVENT_CLASS |
| 414 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, func, print) \ |
Li Zefan | 7e4f44b | 2013-02-21 10:33:33 +0800 | [diff] [blame] | 415 | static int notrace __init \ |
Steven Rostedt (Red Hat) | 33d0f35 | 2015-05-13 15:37:57 -0400 | [diff] [blame] | 416 | trace_event_define_fields_##call(struct trace_event_call *event_call) \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 417 | { \ |
Steven Rostedt (Red Hat) | a723776 | 2015-05-13 15:27:47 -0400 | [diff] [blame] | 418 | struct trace_event_raw_##call field; \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 419 | int ret; \ |
| 420 | \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 421 | tstruct; \ |
| 422 | \ |
| 423 | return ret; \ |
| 424 | } |
| 425 | |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 426 | #undef DEFINE_EVENT |
| 427 | #define DEFINE_EVENT(template, name, proto, args) |
| 428 | |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 429 | #undef DEFINE_EVENT_PRINT |
| 430 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ |
| 431 | DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) |
| 432 | |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 433 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
| 434 | |
| 435 | /* |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 436 | * remember the offset of each array from the beginning of the event. |
| 437 | */ |
| 438 | |
| 439 | #undef __entry |
| 440 | #define __entry entry |
| 441 | |
| 442 | #undef __field |
| 443 | #define __field(type, item) |
| 444 | |
Li Zefan | 43b51ea | 2009-08-07 10:33:22 +0800 | [diff] [blame] | 445 | #undef __field_ext |
| 446 | #define __field_ext(type, item, filter_type) |
| 447 | |
Steven Rostedt | 4d4c9cc | 2014-06-17 08:59:16 -0400 | [diff] [blame] | 448 | #undef __field_struct |
| 449 | #define __field_struct(type, item) |
| 450 | |
| 451 | #undef __field_struct_ext |
| 452 | #define __field_struct_ext(type, item, filter_type) |
| 453 | |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 454 | #undef __array |
| 455 | #define __array(type, item, len) |
| 456 | |
| 457 | #undef __dynamic_array |
| 458 | #define __dynamic_array(type, item, len) \ |
Filipe Brandenburger | 114e7b5 | 2014-02-28 21:32:17 -0800 | [diff] [blame] | 459 | __item_length = (len) * sizeof(type); \ |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 460 | __data_offsets->item = __data_size + \ |
| 461 | offsetof(typeof(*entry), __data); \ |
Filipe Brandenburger | 114e7b5 | 2014-02-28 21:32:17 -0800 | [diff] [blame] | 462 | __data_offsets->item |= __item_length << 16; \ |
| 463 | __data_size += __item_length; |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 464 | |
| 465 | #undef __string |
Steven Rostedt (Red Hat) | 4e58e54 | 2013-11-26 09:22:54 -0500 | [diff] [blame] | 466 | #define __string(item, src) __dynamic_array(char, item, \ |
| 467 | strlen((src) ? (const char *)(src) : "(null)") + 1) |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 468 | |
Steven Rostedt (Red Hat) | 4449bf9 | 2014-05-06 13:10:24 -0400 | [diff] [blame] | 469 | /* |
| 470 | * __bitmask_size_in_bytes_raw is the number of bytes needed to hold |
| 471 | * num_possible_cpus(). |
| 472 | */ |
| 473 | #define __bitmask_size_in_bytes_raw(nr_bits) \ |
| 474 | (((nr_bits) + 7) / 8) |
| 475 | |
| 476 | #define __bitmask_size_in_longs(nr_bits) \ |
| 477 | ((__bitmask_size_in_bytes_raw(nr_bits) + \ |
| 478 | ((BITS_PER_LONG / 8) - 1)) / (BITS_PER_LONG / 8)) |
| 479 | |
| 480 | /* |
| 481 | * __bitmask_size_in_bytes is the number of bytes needed to hold |
| 482 | * num_possible_cpus() padded out to the nearest long. This is what |
| 483 | * is saved in the buffer, just to be consistent. |
| 484 | */ |
| 485 | #define __bitmask_size_in_bytes(nr_bits) \ |
| 486 | (__bitmask_size_in_longs(nr_bits) * (BITS_PER_LONG / 8)) |
| 487 | |
| 488 | #undef __bitmask |
| 489 | #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, \ |
| 490 | __bitmask_size_in_longs(nr_bits)) |
| 491 | |
Ingo Molnar | 091ad36 | 2009-11-26 09:04:55 +0100 | [diff] [blame] | 492 | #undef DECLARE_EVENT_CLASS |
| 493 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ |
Steven Rostedt (Red Hat) | d0ee8f4 | 2015-05-13 15:40:23 -0400 | [diff] [blame] | 494 | static inline notrace int trace_event_get_offsets_##call( \ |
Steven Rostedt (Red Hat) | 62323a1 | 2015-05-13 15:33:52 -0400 | [diff] [blame] | 495 | struct trace_event_data_offsets_##call *__data_offsets, proto) \ |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 496 | { \ |
| 497 | int __data_size = 0; \ |
Filipe Brandenburger | 114e7b5 | 2014-02-28 21:32:17 -0800 | [diff] [blame] | 498 | int __maybe_unused __item_length; \ |
Steven Rostedt (Red Hat) | a723776 | 2015-05-13 15:27:47 -0400 | [diff] [blame] | 499 | struct trace_event_raw_##call __maybe_unused *entry; \ |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 500 | \ |
| 501 | tstruct; \ |
| 502 | \ |
| 503 | return __data_size; \ |
| 504 | } |
| 505 | |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 506 | #undef DEFINE_EVENT |
| 507 | #define DEFINE_EVENT(template, name, proto, args) |
| 508 | |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 509 | #undef DEFINE_EVENT_PRINT |
| 510 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ |
| 511 | DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) |
| 512 | |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 513 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
| 514 | |
Steven Rostedt (Red Hat) | 46ac518 | 2015-09-23 09:26:27 -0400 | [diff] [blame] | 515 | /* |
| 516 | * Stage 4 of the trace events. |
| 517 | * |
| 518 | * Override the macros in <trace/trace_events.h> to include the following: |
| 519 | * |
| 520 | * For those macros defined with TRACE_EVENT: |
| 521 | * |
| 522 | * static struct trace_event_call event_<call>; |
| 523 | * |
| 524 | * static void trace_event_raw_event_<call>(void *__data, proto) |
| 525 | * { |
| 526 | * struct trace_event_file *trace_file = __data; |
| 527 | * struct trace_event_call *event_call = trace_file->event_call; |
| 528 | * struct trace_event_data_offsets_<call> __maybe_unused __data_offsets; |
| 529 | * unsigned long eflags = trace_file->flags; |
| 530 | * enum event_trigger_type __tt = ETT_NONE; |
| 531 | * struct ring_buffer_event *event; |
| 532 | * struct trace_event_raw_<call> *entry; <-- defined in stage 1 |
| 533 | * struct ring_buffer *buffer; |
| 534 | * unsigned long irq_flags; |
| 535 | * int __data_size; |
| 536 | * int pc; |
| 537 | * |
| 538 | * if (!(eflags & EVENT_FILE_FL_TRIGGER_COND)) { |
| 539 | * if (eflags & EVENT_FILE_FL_TRIGGER_MODE) |
| 540 | * event_triggers_call(trace_file, NULL); |
| 541 | * if (eflags & EVENT_FILE_FL_SOFT_DISABLED) |
| 542 | * return; |
| 543 | * } |
| 544 | * |
| 545 | * local_save_flags(irq_flags); |
| 546 | * pc = preempt_count(); |
| 547 | * |
| 548 | * __data_size = trace_event_get_offsets_<call>(&__data_offsets, args); |
| 549 | * |
| 550 | * event = trace_event_buffer_lock_reserve(&buffer, trace_file, |
| 551 | * event_<call>->event.type, |
| 552 | * sizeof(*entry) + __data_size, |
| 553 | * irq_flags, pc); |
| 554 | * if (!event) |
| 555 | * return; |
| 556 | * entry = ring_buffer_event_data(event); |
| 557 | * |
| 558 | * { <assign>; } <-- Here we assign the entries by the __field and |
| 559 | * __array macros. |
| 560 | * |
| 561 | * if (eflags & EVENT_FILE_FL_TRIGGER_COND) |
| 562 | * __tt = event_triggers_call(trace_file, entry); |
| 563 | * |
| 564 | * if (test_bit(EVENT_FILE_FL_SOFT_DISABLED_BIT, |
| 565 | * &trace_file->flags)) |
| 566 | * ring_buffer_discard_commit(buffer, event); |
| 567 | * else if (!filter_check_discard(trace_file, entry, buffer, event)) |
| 568 | * trace_buffer_unlock_commit(buffer, event, irq_flags, pc); |
| 569 | * |
| 570 | * if (__tt) |
| 571 | * event_triggers_post_call(trace_file, __tt); |
| 572 | * } |
| 573 | * |
| 574 | * static struct trace_event ftrace_event_type_<call> = { |
| 575 | * .trace = trace_raw_output_<call>, <-- stage 2 |
| 576 | * }; |
| 577 | * |
| 578 | * static char print_fmt_<call>[] = <TP_printk>; |
| 579 | * |
| 580 | * static struct trace_event_class __used event_class_<template> = { |
| 581 | * .system = "<system>", |
| 582 | * .define_fields = trace_event_define_fields_<call>, |
| 583 | * .fields = LIST_HEAD_INIT(event_class_##call.fields), |
| 584 | * .raw_init = trace_event_raw_init, |
| 585 | * .probe = trace_event_raw_event_##call, |
| 586 | * .reg = trace_event_reg, |
| 587 | * }; |
| 588 | * |
| 589 | * static struct trace_event_call event_<call> = { |
| 590 | * .class = event_class_<template>, |
| 591 | * { |
| 592 | * .tp = &__tracepoint_<call>, |
| 593 | * }, |
| 594 | * .event = &ftrace_event_type_<call>, |
| 595 | * .print_fmt = print_fmt_<call>, |
| 596 | * .flags = TRACE_EVENT_FL_TRACEPOINT, |
| 597 | * }; |
| 598 | * // its only safe to use pointers when doing linker tricks to |
| 599 | * // create an array. |
| 600 | * static struct trace_event_call __used |
| 601 | * __attribute__((section("_ftrace_events"))) *__event_<call> = &event_<call>; |
| 602 | * |
| 603 | */ |
| 604 | |
| 605 | #ifdef CONFIG_PERF_EVENTS |
| 606 | |
| 607 | #define _TRACE_PERF_PROTO(call, proto) \ |
| 608 | static notrace void \ |
| 609 | perf_trace_##call(void *__data, proto); |
| 610 | |
| 611 | #define _TRACE_PERF_INIT(call) \ |
| 612 | .perf_probe = perf_trace_##call, |
| 613 | |
| 614 | #else |
| 615 | #define _TRACE_PERF_PROTO(call, proto) |
| 616 | #define _TRACE_PERF_INIT(call) |
| 617 | #endif /* CONFIG_PERF_EVENTS */ |
| 618 | |
| 619 | #undef __entry |
| 620 | #define __entry entry |
| 621 | |
| 622 | #undef __field |
| 623 | #define __field(type, item) |
| 624 | |
| 625 | #undef __field_struct |
| 626 | #define __field_struct(type, item) |
| 627 | |
| 628 | #undef __array |
| 629 | #define __array(type, item, len) |
| 630 | |
| 631 | #undef __dynamic_array |
| 632 | #define __dynamic_array(type, item, len) \ |
| 633 | __entry->__data_loc_##item = __data_offsets.item; |
| 634 | |
| 635 | #undef __string |
| 636 | #define __string(item, src) __dynamic_array(char, item, -1) |
| 637 | |
| 638 | #undef __assign_str |
| 639 | #define __assign_str(dst, src) \ |
| 640 | strcpy(__get_str(dst), (src) ? (const char *)(src) : "(null)"); |
| 641 | |
| 642 | #undef __bitmask |
| 643 | #define __bitmask(item, nr_bits) __dynamic_array(unsigned long, item, -1) |
| 644 | |
| 645 | #undef __get_bitmask |
| 646 | #define __get_bitmask(field) (char *)__get_dynamic_array(field) |
| 647 | |
| 648 | #undef __assign_bitmask |
| 649 | #define __assign_bitmask(dst, src, nr_bits) \ |
| 650 | memcpy(__get_bitmask(dst), (src), __bitmask_size_in_bytes(nr_bits)) |
| 651 | |
| 652 | #undef TP_fast_assign |
| 653 | #define TP_fast_assign(args...) args |
| 654 | |
Steven Rostedt (Red Hat) | 46ac518 | 2015-09-23 09:26:27 -0400 | [diff] [blame] | 655 | #undef __perf_count |
| 656 | #define __perf_count(c) (c) |
| 657 | |
| 658 | #undef __perf_task |
| 659 | #define __perf_task(t) (t) |
| 660 | |
| 661 | #undef DECLARE_EVENT_CLASS |
| 662 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ |
| 663 | \ |
| 664 | static notrace void \ |
| 665 | trace_event_raw_event_##call(void *__data, proto) \ |
| 666 | { \ |
| 667 | struct trace_event_file *trace_file = __data; \ |
| 668 | struct trace_event_data_offsets_##call __maybe_unused __data_offsets;\ |
| 669 | struct trace_event_buffer fbuffer; \ |
| 670 | struct trace_event_raw_##call *entry; \ |
| 671 | int __data_size; \ |
| 672 | \ |
| 673 | if (trace_trigger_soft_disabled(trace_file)) \ |
| 674 | return; \ |
| 675 | \ |
| 676 | __data_size = trace_event_get_offsets_##call(&__data_offsets, args); \ |
| 677 | \ |
| 678 | entry = trace_event_buffer_reserve(&fbuffer, trace_file, \ |
| 679 | sizeof(*entry) + __data_size); \ |
| 680 | \ |
| 681 | if (!entry) \ |
| 682 | return; \ |
| 683 | \ |
| 684 | tstruct \ |
| 685 | \ |
| 686 | { assign; } \ |
| 687 | \ |
| 688 | trace_event_buffer_commit(&fbuffer); \ |
| 689 | } |
| 690 | /* |
| 691 | * The ftrace_test_probe is compiled out, it is only here as a build time check |
| 692 | * to make sure that if the tracepoint handling changes, the ftrace probe will |
| 693 | * fail to compile unless it too is updated. |
| 694 | */ |
| 695 | |
| 696 | #undef DEFINE_EVENT |
| 697 | #define DEFINE_EVENT(template, call, proto, args) \ |
| 698 | static inline void ftrace_test_probe_##call(void) \ |
| 699 | { \ |
| 700 | check_trace_callback_type_##call(trace_event_raw_event_##template); \ |
| 701 | } |
| 702 | |
| 703 | #undef DEFINE_EVENT_PRINT |
| 704 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) |
| 705 | |
| 706 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
| 707 | |
| 708 | #undef __entry |
| 709 | #define __entry REC |
| 710 | |
| 711 | #undef __print_flags |
| 712 | #undef __print_symbolic |
| 713 | #undef __print_hex |
| 714 | #undef __get_dynamic_array |
| 715 | #undef __get_dynamic_array_len |
| 716 | #undef __get_str |
| 717 | #undef __get_bitmask |
| 718 | #undef __print_array |
| 719 | |
| 720 | #undef TP_printk |
| 721 | #define TP_printk(fmt, args...) "\"" fmt "\", " __stringify(args) |
| 722 | |
| 723 | #undef DECLARE_EVENT_CLASS |
| 724 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ |
| 725 | _TRACE_PERF_PROTO(call, PARAMS(proto)); \ |
| 726 | static char print_fmt_##call[] = print; \ |
| 727 | static struct trace_event_class __used __refdata event_class_##call = { \ |
| 728 | .system = TRACE_SYSTEM_STRING, \ |
| 729 | .define_fields = trace_event_define_fields_##call, \ |
| 730 | .fields = LIST_HEAD_INIT(event_class_##call.fields),\ |
| 731 | .raw_init = trace_event_raw_init, \ |
| 732 | .probe = trace_event_raw_event_##call, \ |
| 733 | .reg = trace_event_reg, \ |
| 734 | _TRACE_PERF_INIT(call) \ |
| 735 | }; |
| 736 | |
| 737 | #undef DEFINE_EVENT |
| 738 | #define DEFINE_EVENT(template, call, proto, args) \ |
| 739 | \ |
| 740 | static struct trace_event_call __used event_##call = { \ |
| 741 | .class = &event_class_##template, \ |
| 742 | { \ |
| 743 | .tp = &__tracepoint_##call, \ |
| 744 | }, \ |
| 745 | .event.funcs = &trace_event_type_funcs_##template, \ |
| 746 | .print_fmt = print_fmt_##template, \ |
| 747 | .flags = TRACE_EVENT_FL_TRACEPOINT, \ |
| 748 | }; \ |
| 749 | static struct trace_event_call __used \ |
| 750 | __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call |
| 751 | |
| 752 | #undef DEFINE_EVENT_PRINT |
| 753 | #define DEFINE_EVENT_PRINT(template, call, proto, args, print) \ |
| 754 | \ |
| 755 | static char print_fmt_##call[] = print; \ |
| 756 | \ |
| 757 | static struct trace_event_call __used event_##call = { \ |
| 758 | .class = &event_class_##template, \ |
| 759 | { \ |
| 760 | .tp = &__tracepoint_##call, \ |
| 761 | }, \ |
| 762 | .event.funcs = &trace_event_type_funcs_##call, \ |
| 763 | .print_fmt = print_fmt_##call, \ |
| 764 | .flags = TRACE_EVENT_FL_TRACEPOINT, \ |
| 765 | }; \ |
| 766 | static struct trace_event_call __used \ |
| 767 | __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call |
| 768 | |
| 769 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |