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 | * |
| 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 Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 21 | /* |
Ingo Molnar | 091ad36 | 2009-11-26 09:04:55 +0100 | [diff] [blame] | 22 | * DECLARE_EVENT_CLASS can be used to add a generic function |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 23 | * handlers for events. That is, if all events have the same |
| 24 | * parameters and just have distinct trace points. |
| 25 | * Each tracepoint can be defined with DEFINE_EVENT and that |
Ingo Molnar | 091ad36 | 2009-11-26 09:04:55 +0100 | [diff] [blame] | 26 | * will map the DECLARE_EVENT_CLASS to the tracepoint. |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 27 | * |
| 28 | * TRACE_EVENT is a one to one mapping between tracepoint and template. |
| 29 | */ |
| 30 | #undef TRACE_EVENT |
| 31 | #define TRACE_EVENT(name, proto, args, tstruct, assign, print) \ |
Ingo Molnar | 091ad36 | 2009-11-26 09:04:55 +0100 | [diff] [blame] | 32 | DECLARE_EVENT_CLASS(name, \ |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 33 | PARAMS(proto), \ |
| 34 | PARAMS(args), \ |
| 35 | PARAMS(tstruct), \ |
| 36 | PARAMS(assign), \ |
| 37 | PARAMS(print)); \ |
| 38 | DEFINE_EVENT(name, name, PARAMS(proto), PARAMS(args)); |
| 39 | |
| 40 | |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 41 | #undef __field |
| 42 | #define __field(type, item) type item; |
| 43 | |
Li Zefan | 43b51ea | 2009-08-07 10:33:22 +0800 | [diff] [blame] | 44 | #undef __field_ext |
| 45 | #define __field_ext(type, item, filter_type) type item; |
| 46 | |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 47 | #undef __array |
| 48 | #define __array(type, item, len) type item[len]; |
| 49 | |
| 50 | #undef __dynamic_array |
Li Zefan | 7d536cb | 2009-07-16 10:54:02 +0800 | [diff] [blame] | 51 | #define __dynamic_array(type, item, len) u32 __data_loc_##item; |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 52 | |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 53 | #undef __string |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 54 | #define __string(item, src) __dynamic_array(char, item, -1) |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 55 | |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 56 | #undef TP_STRUCT__entry |
| 57 | #define TP_STRUCT__entry(args...) args |
| 58 | |
Ingo Molnar | 091ad36 | 2009-11-26 09:04:55 +0100 | [diff] [blame] | 59 | #undef DECLARE_EVENT_CLASS |
| 60 | #define DECLARE_EVENT_CLASS(name, proto, args, tstruct, assign, print) \ |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 61 | struct ftrace_raw_##name { \ |
| 62 | struct trace_entry ent; \ |
| 63 | tstruct \ |
| 64 | char __data[0]; \ |
Steven Rostedt | 8f08201 | 2010-04-20 10:47:33 -0400 | [diff] [blame] | 65 | }; \ |
| 66 | \ |
| 67 | static struct ftrace_event_class event_class_##name; |
| 68 | |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 69 | #undef DEFINE_EVENT |
| 70 | #define DEFINE_EVENT(template, name, proto, args) \ |
Steven Rostedt | 49c1774 | 2010-05-25 06:19:35 -0700 | [diff] [blame] | 71 | static struct ftrace_event_call __used \ |
Jeff Mahoney | 86c38a3 | 2010-02-24 13:59:23 -0500 | [diff] [blame] | 72 | __attribute__((__aligned__(4))) event_##name |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 73 | |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 74 | #undef DEFINE_EVENT_PRINT |
| 75 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ |
| 76 | DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) |
| 77 | |
Josh Stone | 9741987 | 2009-08-24 14:43:13 -0700 | [diff] [blame] | 78 | /* Callbacks are meaningless to ftrace. */ |
| 79 | #undef TRACE_EVENT_FN |
Frederic Weisbecker | 0dd7b74 | 2009-08-28 00:50:06 +0200 | [diff] [blame] | 80 | #define TRACE_EVENT_FN(name, proto, args, tstruct, \ |
| 81 | assign, print, reg, unreg) \ |
Frederic Weisbecker | 819ce45 | 2010-07-20 18:41:24 +0200 | [diff] [blame] | 82 | TRACE_EVENT(name, PARAMS(proto), PARAMS(args), \ |
| 83 | PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \ |
Josh Stone | 9741987 | 2009-08-24 14:43:13 -0700 | [diff] [blame] | 84 | |
Frederic Weisbecker | 1ed0c59 | 2010-11-18 01:46:57 +0100 | [diff] [blame] | 85 | #undef TRACE_EVENT_FLAGS |
| 86 | #define TRACE_EVENT_FLAGS(name, value) \ |
| 87 | static int __init trace_init_flags_##name(void) \ |
| 88 | { \ |
| 89 | event_##name.flags = value; \ |
| 90 | return 0; \ |
| 91 | } \ |
| 92 | early_initcall(trace_init_flags_##name); |
| 93 | |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 94 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
| 95 | |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 96 | |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 97 | /* |
| 98 | * Stage 2 of the trace events. |
| 99 | * |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 100 | * Include the following: |
| 101 | * |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 102 | * struct ftrace_data_offsets_<call> { |
Li Zefan | 7d536cb | 2009-07-16 10:54:02 +0800 | [diff] [blame] | 103 | * u32 <item1>; |
| 104 | * u32 <item2>; |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 105 | * [...] |
| 106 | * }; |
| 107 | * |
Li Zefan | 7d536cb | 2009-07-16 10:54:02 +0800 | [diff] [blame] | 108 | * The __dynamic_array() macro will create each u32 <item>, this is |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 109 | * 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] | 110 | * 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] | 111 | */ |
| 112 | |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 113 | #undef __field |
Li Zefan | 43b51ea | 2009-08-07 10:33:22 +0800 | [diff] [blame] | 114 | #define __field(type, item) |
| 115 | |
| 116 | #undef __field_ext |
| 117 | #define __field_ext(type, item, filter_type) |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 118 | |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 119 | #undef __array |
| 120 | #define __array(type, item, len) |
| 121 | |
| 122 | #undef __dynamic_array |
Li Zefan | 7d536cb | 2009-07-16 10:54:02 +0800 | [diff] [blame] | 123 | #define __dynamic_array(type, item, len) u32 item; |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 124 | |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 125 | #undef __string |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 126 | #define __string(item, src) __dynamic_array(char, item, -1) |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 127 | |
Ingo Molnar | 091ad36 | 2009-11-26 09:04:55 +0100 | [diff] [blame] | 128 | #undef DECLARE_EVENT_CLASS |
| 129 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 130 | struct ftrace_data_offsets_##call { \ |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 131 | tstruct; \ |
| 132 | }; |
| 133 | |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 134 | #undef DEFINE_EVENT |
| 135 | #define DEFINE_EVENT(template, name, proto, args) |
| 136 | |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 137 | #undef DEFINE_EVENT_PRINT |
| 138 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ |
| 139 | DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) |
| 140 | |
Frederic Weisbecker | 1ed0c59 | 2010-11-18 01:46:57 +0100 | [diff] [blame] | 141 | #undef TRACE_EVENT_FLAGS |
| 142 | #define TRACE_EVENT_FLAGS(event, flag) |
| 143 | |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 144 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
| 145 | |
| 146 | /* |
| 147 | * Stage 3 of the trace events. |
| 148 | * |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 149 | * Override the macros in <trace/trace_events.h> to include the following: |
| 150 | * |
| 151 | * enum print_line_t |
| 152 | * ftrace_raw_output_<call>(struct trace_iterator *iter, int flags) |
| 153 | * { |
| 154 | * struct trace_seq *s = &iter->seq; |
| 155 | * struct ftrace_raw_<call> *field; <-- defined in stage 1 |
| 156 | * struct trace_entry *entry; |
Lai Jiangshan | bc289ae | 2010-06-03 18:26:24 +0800 | [diff] [blame] | 157 | * struct trace_seq *p = &iter->tmp_seq; |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 158 | * int ret; |
| 159 | * |
| 160 | * entry = iter->ent; |
| 161 | * |
Steven Rostedt | 32c0eda | 2010-04-23 10:38:03 -0400 | [diff] [blame] | 162 | * if (entry->type != event_<call>->event.type) { |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 163 | * WARN_ON_ONCE(1); |
| 164 | * return TRACE_TYPE_UNHANDLED; |
| 165 | * } |
| 166 | * |
| 167 | * field = (typeof(field))entry; |
| 168 | * |
Steven Whitehouse | 56d8bd3 | 2009-06-03 14:52:03 +0100 | [diff] [blame] | 169 | * trace_seq_init(p); |
Li Zefan | 50354a8 | 2010-03-24 10:58:24 +0800 | [diff] [blame] | 170 | * ret = trace_seq_printf(s, "%s: ", <call>); |
| 171 | * if (ret) |
| 172 | * ret = trace_seq_printf(s, <TP_printk> "\n"); |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 173 | * if (!ret) |
| 174 | * return TRACE_TYPE_PARTIAL_LINE; |
| 175 | * |
| 176 | * return TRACE_TYPE_HANDLED; |
| 177 | * } |
| 178 | * |
| 179 | * This is the method used to print the raw event to the trace |
| 180 | * output format. Note, this is not needed if the data is read |
| 181 | * in binary. |
| 182 | */ |
| 183 | |
| 184 | #undef __entry |
| 185 | #define __entry field |
| 186 | |
| 187 | #undef TP_printk |
| 188 | #define TP_printk(fmt, args...) fmt "\n", args |
| 189 | |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 190 | #undef __get_dynamic_array |
| 191 | #define __get_dynamic_array(field) \ |
Li Zefan | 7d536cb | 2009-07-16 10:54:02 +0800 | [diff] [blame] | 192 | ((void *)__entry + (__entry->__data_loc_##field & 0xffff)) |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 193 | |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 194 | #undef __get_str |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 195 | #define __get_str(field) (char *)__get_dynamic_array(field) |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 196 | |
Steven Rostedt | be74b73 | 2009-05-26 20:25:22 +0200 | [diff] [blame] | 197 | #undef __print_flags |
| 198 | #define __print_flags(flag, delim, flag_array...) \ |
| 199 | ({ \ |
Steven Rostedt | a48f494 | 2009-09-14 11:18:02 -0400 | [diff] [blame] | 200 | static const struct trace_print_flags __flags[] = \ |
Steven Rostedt | be74b73 | 2009-05-26 20:25:22 +0200 | [diff] [blame] | 201 | { flag_array, { -1, NULL }}; \ |
Steven Rostedt | a48f494 | 2009-09-14 11:18:02 -0400 | [diff] [blame] | 202 | ftrace_print_flags_seq(p, delim, flag, __flags); \ |
Steven Rostedt | be74b73 | 2009-05-26 20:25:22 +0200 | [diff] [blame] | 203 | }) |
| 204 | |
Steven Rostedt | 0f4fc29 | 2009-05-20 19:21:47 -0400 | [diff] [blame] | 205 | #undef __print_symbolic |
| 206 | #define __print_symbolic(value, symbol_array...) \ |
| 207 | ({ \ |
| 208 | static const struct trace_print_flags symbols[] = \ |
| 209 | { symbol_array, { -1, NULL }}; \ |
| 210 | ftrace_print_symbols_seq(p, value, symbols); \ |
| 211 | }) |
| 212 | |
Kei Tokunaga | 5a2e399 | 2010-04-01 20:40:58 +0900 | [diff] [blame] | 213 | #undef __print_hex |
| 214 | #define __print_hex(buf, buf_len) ftrace_print_hex_seq(p, buf, buf_len) |
| 215 | |
Ingo Molnar | 091ad36 | 2009-11-26 09:04:55 +0100 | [diff] [blame] | 216 | #undef DECLARE_EVENT_CLASS |
| 217 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ |
Steven Rostedt | 83f0d53 | 2010-02-16 10:38:47 -0500 | [diff] [blame] | 218 | static notrace enum print_line_t \ |
Steven Rostedt | 80decc7 | 2010-04-23 10:00:22 -0400 | [diff] [blame] | 219 | ftrace_raw_output_##call(struct trace_iterator *iter, int flags, \ |
| 220 | struct trace_event *trace_event) \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 221 | { \ |
Steven Rostedt | 80decc7 | 2010-04-23 10:00:22 -0400 | [diff] [blame] | 222 | struct ftrace_event_call *event; \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 223 | struct trace_seq *s = &iter->seq; \ |
| 224 | struct ftrace_raw_##call *field; \ |
| 225 | struct trace_entry *entry; \ |
Lai Jiangshan | bc289ae | 2010-06-03 18:26:24 +0800 | [diff] [blame] | 226 | struct trace_seq *p = &iter->tmp_seq; \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 227 | int ret; \ |
| 228 | \ |
Steven Rostedt | 80decc7 | 2010-04-23 10:00:22 -0400 | [diff] [blame] | 229 | event = container_of(trace_event, struct ftrace_event_call, \ |
| 230 | event); \ |
| 231 | \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 232 | entry = iter->ent; \ |
| 233 | \ |
Steven Rostedt | 32c0eda | 2010-04-23 10:38:03 -0400 | [diff] [blame] | 234 | if (entry->type != event->event.type) { \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 235 | WARN_ON_ONCE(1); \ |
| 236 | return TRACE_TYPE_UNHANDLED; \ |
| 237 | } \ |
| 238 | \ |
| 239 | field = (typeof(field))entry; \ |
| 240 | \ |
Steven Whitehouse | 56d8bd3 | 2009-06-03 14:52:03 +0100 | [diff] [blame] | 241 | trace_seq_init(p); \ |
Steven Rostedt | 80decc7 | 2010-04-23 10:00:22 -0400 | [diff] [blame] | 242 | ret = trace_seq_printf(s, "%s: ", event->name); \ |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 243 | if (ret) \ |
| 244 | ret = trace_seq_printf(s, print); \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 245 | if (!ret) \ |
| 246 | return TRACE_TYPE_PARTIAL_LINE; \ |
| 247 | \ |
| 248 | return TRACE_TYPE_HANDLED; \ |
Steven Rostedt | 80decc7 | 2010-04-23 10:00:22 -0400 | [diff] [blame] | 249 | } \ |
| 250 | static struct trace_event_functions ftrace_event_type_funcs_##call = { \ |
| 251 | .trace = ftrace_raw_output_##call, \ |
| 252 | }; |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 253 | |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 254 | #undef DEFINE_EVENT_PRINT |
| 255 | #define DEFINE_EVENT_PRINT(template, call, proto, args, print) \ |
Steven Rostedt | 83f0d53 | 2010-02-16 10:38:47 -0500 | [diff] [blame] | 256 | static notrace enum print_line_t \ |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 257 | ftrace_raw_output_##call(struct trace_iterator *iter, int flags, \ |
| 258 | struct trace_event *event) \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 259 | { \ |
| 260 | struct trace_seq *s = &iter->seq; \ |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 261 | struct ftrace_raw_##template *field; \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 262 | struct trace_entry *entry; \ |
Lai Jiangshan | bc289ae | 2010-06-03 18:26:24 +0800 | [diff] [blame] | 263 | struct trace_seq *p = &iter->tmp_seq; \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 264 | int ret; \ |
| 265 | \ |
| 266 | entry = iter->ent; \ |
| 267 | \ |
Steven Rostedt | 32c0eda | 2010-04-23 10:38:03 -0400 | [diff] [blame] | 268 | if (entry->type != event_##call.event.type) { \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 269 | WARN_ON_ONCE(1); \ |
| 270 | return TRACE_TYPE_UNHANDLED; \ |
| 271 | } \ |
| 272 | \ |
| 273 | field = (typeof(field))entry; \ |
| 274 | \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 275 | trace_seq_init(p); \ |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 276 | ret = trace_seq_printf(s, "%s: ", #call); \ |
| 277 | if (ret) \ |
| 278 | ret = trace_seq_printf(s, print); \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 279 | if (!ret) \ |
| 280 | return TRACE_TYPE_PARTIAL_LINE; \ |
| 281 | \ |
| 282 | return TRACE_TYPE_HANDLED; \ |
Steven Rostedt | 80decc7 | 2010-04-23 10:00:22 -0400 | [diff] [blame] | 283 | } \ |
| 284 | static struct trace_event_functions ftrace_event_type_funcs_##call = { \ |
| 285 | .trace = ftrace_raw_output_##call, \ |
| 286 | }; |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 287 | |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 288 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
| 289 | |
Li Zefan | 43b51ea | 2009-08-07 10:33:22 +0800 | [diff] [blame] | 290 | #undef __field_ext |
| 291 | #define __field_ext(type, item, filter_type) \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 292 | ret = trace_define_field(event_call, #type, #item, \ |
| 293 | offsetof(typeof(field), item), \ |
Li Zefan | 43b51ea | 2009-08-07 10:33:22 +0800 | [diff] [blame] | 294 | sizeof(field.item), \ |
| 295 | is_signed_type(type), filter_type); \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 296 | if (ret) \ |
| 297 | return ret; |
| 298 | |
Li Zefan | 43b51ea | 2009-08-07 10:33:22 +0800 | [diff] [blame] | 299 | #undef __field |
| 300 | #define __field(type, item) __field_ext(type, item, FILTER_OTHER) |
| 301 | |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 302 | #undef __array |
| 303 | #define __array(type, item, len) \ |
| 304 | BUILD_BUG_ON(len > MAX_FILTER_STR_VAL); \ |
| 305 | ret = trace_define_field(event_call, #type "[" #len "]", #item, \ |
| 306 | offsetof(typeof(field), item), \ |
Lai Jiangshan | fb7ae98 | 2009-12-15 15:39:38 +0800 | [diff] [blame] | 307 | sizeof(field.item), \ |
| 308 | is_signed_type(type), FILTER_OTHER); \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 309 | if (ret) \ |
| 310 | return ret; |
| 311 | |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 312 | #undef __dynamic_array |
| 313 | #define __dynamic_array(type, item, len) \ |
Lai Jiangshan | 68fd60a | 2009-07-16 10:53:34 +0800 | [diff] [blame] | 314 | ret = trace_define_field(event_call, "__data_loc " #type "[]", #item, \ |
Li Zefan | 43b51ea | 2009-08-07 10:33:22 +0800 | [diff] [blame] | 315 | offsetof(typeof(field), __data_loc_##item), \ |
Lai Jiangshan | fb7ae98 | 2009-12-15 15:39:38 +0800 | [diff] [blame] | 316 | sizeof(field.__data_loc_##item), \ |
| 317 | is_signed_type(type), FILTER_OTHER); |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 318 | |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 319 | #undef __string |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 320 | #define __string(item, src) __dynamic_array(char, item, -1) |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 321 | |
Ingo Molnar | 091ad36 | 2009-11-26 09:04:55 +0100 | [diff] [blame] | 322 | #undef DECLARE_EVENT_CLASS |
| 323 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, func, print) \ |
Steven Rostedt | 83f0d53 | 2010-02-16 10:38:47 -0500 | [diff] [blame] | 324 | static int notrace \ |
Li Zefan | 14be96c | 2009-08-19 15:53:52 +0800 | [diff] [blame] | 325 | ftrace_define_fields_##call(struct ftrace_event_call *event_call) \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 326 | { \ |
| 327 | struct ftrace_raw_##call field; \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 328 | int ret; \ |
| 329 | \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 330 | tstruct; \ |
| 331 | \ |
| 332 | return ret; \ |
| 333 | } |
| 334 | |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 335 | #undef DEFINE_EVENT |
| 336 | #define DEFINE_EVENT(template, name, proto, args) |
| 337 | |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 338 | #undef DEFINE_EVENT_PRINT |
| 339 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ |
| 340 | DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) |
| 341 | |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 342 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
| 343 | |
| 344 | /* |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 345 | * remember the offset of each array from the beginning of the event. |
| 346 | */ |
| 347 | |
| 348 | #undef __entry |
| 349 | #define __entry entry |
| 350 | |
| 351 | #undef __field |
| 352 | #define __field(type, item) |
| 353 | |
Li Zefan | 43b51ea | 2009-08-07 10:33:22 +0800 | [diff] [blame] | 354 | #undef __field_ext |
| 355 | #define __field_ext(type, item, filter_type) |
| 356 | |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 357 | #undef __array |
| 358 | #define __array(type, item, len) |
| 359 | |
| 360 | #undef __dynamic_array |
| 361 | #define __dynamic_array(type, item, len) \ |
| 362 | __data_offsets->item = __data_size + \ |
| 363 | offsetof(typeof(*entry), __data); \ |
Li Zefan | 7d536cb | 2009-07-16 10:54:02 +0800 | [diff] [blame] | 364 | __data_offsets->item |= (len * sizeof(type)) << 16; \ |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 365 | __data_size += (len) * sizeof(type); |
| 366 | |
| 367 | #undef __string |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 368 | #define __string(item, src) __dynamic_array(char, item, strlen(src) + 1) |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 369 | |
Ingo Molnar | 091ad36 | 2009-11-26 09:04:55 +0100 | [diff] [blame] | 370 | #undef DECLARE_EVENT_CLASS |
| 371 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ |
Steven Rostedt | 83f0d53 | 2010-02-16 10:38:47 -0500 | [diff] [blame] | 372 | static inline notrace int ftrace_get_offsets_##call( \ |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 373 | struct ftrace_data_offsets_##call *__data_offsets, proto) \ |
| 374 | { \ |
| 375 | int __data_size = 0; \ |
| 376 | struct ftrace_raw_##call __maybe_unused *entry; \ |
| 377 | \ |
| 378 | tstruct; \ |
| 379 | \ |
| 380 | return __data_size; \ |
| 381 | } |
| 382 | |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 383 | #undef DEFINE_EVENT |
| 384 | #define DEFINE_EVENT(template, name, proto, args) |
| 385 | |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 386 | #undef DEFINE_EVENT_PRINT |
| 387 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ |
| 388 | DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) |
| 389 | |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 390 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
| 391 | |
| 392 | /* |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 393 | * Stage 4 of the trace events. |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 394 | * |
| 395 | * Override the macros in <trace/trace_events.h> to include the following: |
| 396 | * |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 397 | * For those macros defined with TRACE_EVENT: |
| 398 | * |
| 399 | * static struct ftrace_event_call event_<call>; |
| 400 | * |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 401 | * static void ftrace_raw_event_<call>(void *__data, proto) |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 402 | * { |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 403 | * struct ftrace_event_call *event_call = __data; |
Li Zefan | 50354a8 | 2010-03-24 10:58:24 +0800 | [diff] [blame] | 404 | * struct ftrace_data_offsets_<call> __maybe_unused __data_offsets; |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 405 | * struct ring_buffer_event *event; |
| 406 | * struct ftrace_raw_<call> *entry; <-- defined in stage 1 |
Steven Rostedt | e77405a | 2009-09-02 14:17:06 -0400 | [diff] [blame] | 407 | * struct ring_buffer *buffer; |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 408 | * unsigned long irq_flags; |
Li Zefan | 50354a8 | 2010-03-24 10:58:24 +0800 | [diff] [blame] | 409 | * int __data_size; |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 410 | * int pc; |
| 411 | * |
| 412 | * local_save_flags(irq_flags); |
| 413 | * pc = preempt_count(); |
| 414 | * |
Li Zefan | 50354a8 | 2010-03-24 10:58:24 +0800 | [diff] [blame] | 415 | * __data_size = ftrace_get_offsets_<call>(&__data_offsets, args); |
| 416 | * |
Steven Rostedt | e77405a | 2009-09-02 14:17:06 -0400 | [diff] [blame] | 417 | * event = trace_current_buffer_lock_reserve(&buffer, |
Steven Rostedt | 32c0eda | 2010-04-23 10:38:03 -0400 | [diff] [blame] | 418 | * event_<call>->event.type, |
Li Zefan | 50354a8 | 2010-03-24 10:58:24 +0800 | [diff] [blame] | 419 | * sizeof(*entry) + __data_size, |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 420 | * irq_flags, pc); |
| 421 | * if (!event) |
| 422 | * return; |
| 423 | * entry = ring_buffer_event_data(event); |
| 424 | * |
Li Zefan | 50354a8 | 2010-03-24 10:58:24 +0800 | [diff] [blame] | 425 | * { <assign>; } <-- Here we assign the entries by the __field and |
| 426 | * __array macros. |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 427 | * |
Li Zefan | 50354a8 | 2010-03-24 10:58:24 +0800 | [diff] [blame] | 428 | * if (!filter_current_check_discard(buffer, event_call, entry, event)) |
| 429 | * trace_current_buffer_unlock_commit(buffer, |
| 430 | * event, irq_flags, pc); |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 431 | * } |
| 432 | * |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 433 | * static struct trace_event ftrace_event_type_<call> = { |
| 434 | * .trace = ftrace_raw_output_<call>, <-- stage 2 |
| 435 | * }; |
| 436 | * |
Li Zefan | 50354a8 | 2010-03-24 10:58:24 +0800 | [diff] [blame] | 437 | * static const char print_fmt_<call>[] = <TP_printk>; |
| 438 | * |
Steven Rostedt | 8f08201 | 2010-04-20 10:47:33 -0400 | [diff] [blame] | 439 | * static struct ftrace_event_class __used event_class_<template> = { |
| 440 | * .system = "<system>", |
Steven Rostedt | 2e33af0 | 2010-04-22 10:35:55 -0400 | [diff] [blame] | 441 | * .define_fields = ftrace_define_fields_<call>, |
Steven Rostedt | 0405ab8 | 2010-04-22 11:46:44 -0400 | [diff] [blame] | 442 | * .fields = LIST_HEAD_INIT(event_class_##call.fields), |
| 443 | * .raw_init = trace_event_raw_init, |
| 444 | * .probe = ftrace_raw_event_##call, |
Steven Rostedt | a1d0ce8 | 2010-06-08 11:22:06 -0400 | [diff] [blame] | 445 | * .reg = ftrace_event_reg, |
Steven Rostedt | 8f08201 | 2010-04-20 10:47:33 -0400 | [diff] [blame] | 446 | * }; |
| 447 | * |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 448 | * static struct ftrace_event_call __used |
| 449 | * __attribute__((__aligned__(4))) |
| 450 | * __attribute__((section("_ftrace_events"))) event_<call> = { |
| 451 | * .name = "<call>", |
Steven Rostedt | 8f08201 | 2010-04-20 10:47:33 -0400 | [diff] [blame] | 452 | * .class = event_class_<template>, |
Steven Rostedt | 2e33af0 | 2010-04-22 10:35:55 -0400 | [diff] [blame] | 453 | * .event = &ftrace_event_type_<call>, |
Li Zefan | 50354a8 | 2010-03-24 10:58:24 +0800 | [diff] [blame] | 454 | * .print_fmt = print_fmt_<call>, |
Steven Rostedt | 8f08201 | 2010-04-20 10:47:33 -0400 | [diff] [blame] | 455 | * }; |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 456 | * |
| 457 | */ |
| 458 | |
Li Zefan | 07b139c | 2009-12-21 14:27:35 +0800 | [diff] [blame] | 459 | #ifdef CONFIG_PERF_EVENTS |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 460 | |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 461 | #define _TRACE_PERF_PROTO(call, proto) \ |
| 462 | static notrace void \ |
| 463 | perf_trace_##call(void *__data, proto); |
| 464 | |
Frederic Weisbecker | 97d5a22 | 2010-03-05 05:35:37 +0100 | [diff] [blame] | 465 | #define _TRACE_PERF_INIT(call) \ |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 466 | .perf_probe = perf_trace_##call, |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 467 | |
| 468 | #else |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 469 | #define _TRACE_PERF_PROTO(call, proto) |
Frederic Weisbecker | 97d5a22 | 2010-03-05 05:35:37 +0100 | [diff] [blame] | 470 | #define _TRACE_PERF_INIT(call) |
Li Zefan | 07b139c | 2009-12-21 14:27:35 +0800 | [diff] [blame] | 471 | #endif /* CONFIG_PERF_EVENTS */ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 472 | |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 473 | #undef __entry |
| 474 | #define __entry entry |
| 475 | |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 476 | #undef __field |
| 477 | #define __field(type, item) |
| 478 | |
| 479 | #undef __array |
| 480 | #define __array(type, item, len) |
| 481 | |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 482 | #undef __dynamic_array |
| 483 | #define __dynamic_array(type, item, len) \ |
| 484 | __entry->__data_loc_##item = __data_offsets.item; |
| 485 | |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 486 | #undef __string |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 487 | #define __string(item, src) __dynamic_array(char, item, -1) \ |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 488 | |
| 489 | #undef __assign_str |
| 490 | #define __assign_str(dst, src) \ |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 491 | strcpy(__get_str(dst), src); |
| 492 | |
Lai Jiangshan | 0fa0eda | 2009-12-15 15:39:57 +0800 | [diff] [blame] | 493 | #undef TP_fast_assign |
| 494 | #define TP_fast_assign(args...) args |
| 495 | |
| 496 | #undef TP_perf_assign |
| 497 | #define TP_perf_assign(args...) |
| 498 | |
Ingo Molnar | 091ad36 | 2009-11-26 09:04:55 +0100 | [diff] [blame] | 499 | #undef DECLARE_EVENT_CLASS |
| 500 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 501 | \ |
Steven Rostedt | 83f0d53 | 2010-02-16 10:38:47 -0500 | [diff] [blame] | 502 | static notrace void \ |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 503 | ftrace_raw_event_##call(void *__data, proto) \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 504 | { \ |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 505 | struct ftrace_event_call *event_call = __data; \ |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 506 | struct ftrace_data_offsets_##call __maybe_unused __data_offsets;\ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 507 | struct ring_buffer_event *event; \ |
| 508 | struct ftrace_raw_##call *entry; \ |
Steven Rostedt | e77405a | 2009-09-02 14:17:06 -0400 | [diff] [blame] | 509 | struct ring_buffer *buffer; \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 510 | unsigned long irq_flags; \ |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 511 | int __data_size; \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 512 | int pc; \ |
| 513 | \ |
| 514 | local_save_flags(irq_flags); \ |
| 515 | pc = preempt_count(); \ |
| 516 | \ |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 517 | __data_size = ftrace_get_offsets_##call(&__data_offsets, args); \ |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 518 | \ |
Steven Rostedt | e77405a | 2009-09-02 14:17:06 -0400 | [diff] [blame] | 519 | event = trace_current_buffer_lock_reserve(&buffer, \ |
Steven Rostedt | 32c0eda | 2010-04-23 10:38:03 -0400 | [diff] [blame] | 520 | event_call->event.type, \ |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 521 | sizeof(*entry) + __data_size, \ |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 522 | irq_flags, pc); \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 523 | if (!event) \ |
| 524 | return; \ |
| 525 | entry = ring_buffer_event_data(event); \ |
| 526 | \ |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 527 | tstruct \ |
| 528 | \ |
Li Zefan | a9c1c3a | 2009-06-01 15:35:13 +0800 | [diff] [blame] | 529 | { assign; } \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 530 | \ |
Steven Rostedt | e77405a | 2009-09-02 14:17:06 -0400 | [diff] [blame] | 531 | if (!filter_current_check_discard(buffer, event_call, entry, event)) \ |
| 532 | trace_nowake_buffer_unlock_commit(buffer, \ |
| 533 | event, irq_flags, pc); \ |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 534 | } |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 535 | /* |
| 536 | * The ftrace_test_probe is compiled out, it is only here as a build time check |
| 537 | * to make sure that if the tracepoint handling changes, the ftrace probe will |
| 538 | * fail to compile unless it too is updated. |
| 539 | */ |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 540 | |
| 541 | #undef DEFINE_EVENT |
| 542 | #define DEFINE_EVENT(template, call, proto, args) \ |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 543 | static inline void ftrace_test_probe_##call(void) \ |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 544 | { \ |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 545 | check_trace_callback_type_##call(ftrace_raw_event_##template); \ |
| 546 | } |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 547 | |
| 548 | #undef DEFINE_EVENT_PRINT |
Steven Rostedt | 80decc7 | 2010-04-23 10:00:22 -0400 | [diff] [blame] | 549 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 550 | |
| 551 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
| 552 | |
Lai Jiangshan | 509e760 | 2009-12-15 15:39:42 +0800 | [diff] [blame] | 553 | #undef __entry |
| 554 | #define __entry REC |
| 555 | |
| 556 | #undef __print_flags |
| 557 | #undef __print_symbolic |
| 558 | #undef __get_dynamic_array |
| 559 | #undef __get_str |
| 560 | |
| 561 | #undef TP_printk |
| 562 | #define TP_printk(fmt, args...) "\"" fmt "\", " __stringify(args) |
| 563 | |
Ingo Molnar | 091ad36 | 2009-11-26 09:04:55 +0100 | [diff] [blame] | 564 | #undef DECLARE_EVENT_CLASS |
Lai Jiangshan | 509e760 | 2009-12-15 15:39:42 +0800 | [diff] [blame] | 565 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 566 | _TRACE_PERF_PROTO(call, PARAMS(proto)); \ |
Steven Rostedt | 8f08201 | 2010-04-20 10:47:33 -0400 | [diff] [blame] | 567 | static const char print_fmt_##call[] = print; \ |
| 568 | static struct ftrace_event_class __used event_class_##call = { \ |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 569 | .system = __stringify(TRACE_SYSTEM), \ |
Steven Rostedt | 2e33af0 | 2010-04-22 10:35:55 -0400 | [diff] [blame] | 570 | .define_fields = ftrace_define_fields_##call, \ |
| 571 | .fields = LIST_HEAD_INIT(event_class_##call.fields),\ |
Steven Rostedt | 0405ab8 | 2010-04-22 11:46:44 -0400 | [diff] [blame] | 572 | .raw_init = trace_event_raw_init, \ |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 573 | .probe = ftrace_raw_event_##call, \ |
Steven Rostedt | a1d0ce8 | 2010-06-08 11:22:06 -0400 | [diff] [blame] | 574 | .reg = ftrace_event_reg, \ |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 575 | _TRACE_PERF_INIT(call) \ |
Steven Rostedt | 8f08201 | 2010-04-20 10:47:33 -0400 | [diff] [blame] | 576 | }; |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 577 | |
| 578 | #undef DEFINE_EVENT |
| 579 | #define DEFINE_EVENT(template, call, proto, args) \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 580 | \ |
| 581 | static struct ftrace_event_call __used \ |
| 582 | __attribute__((__aligned__(4))) \ |
| 583 | __attribute__((section("_ftrace_events"))) event_##call = { \ |
| 584 | .name = #call, \ |
Steven Rostedt | 8f08201 | 2010-04-20 10:47:33 -0400 | [diff] [blame] | 585 | .class = &event_class_##template, \ |
Steven Rostedt | 80decc7 | 2010-04-23 10:00:22 -0400 | [diff] [blame] | 586 | .event.funcs = &ftrace_event_type_funcs_##template, \ |
Lai Jiangshan | 509e760 | 2009-12-15 15:39:42 +0800 | [diff] [blame] | 587 | .print_fmt = print_fmt_##template, \ |
Steven Rostedt | 8f08201 | 2010-04-20 10:47:33 -0400 | [diff] [blame] | 588 | }; |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 589 | |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 590 | #undef DEFINE_EVENT_PRINT |
| 591 | #define DEFINE_EVENT_PRINT(template, call, proto, args, print) \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 592 | \ |
Lai Jiangshan | 509e760 | 2009-12-15 15:39:42 +0800 | [diff] [blame] | 593 | static const char print_fmt_##call[] = print; \ |
| 594 | \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 595 | static struct ftrace_event_call __used \ |
| 596 | __attribute__((__aligned__(4))) \ |
| 597 | __attribute__((section("_ftrace_events"))) event_##call = { \ |
| 598 | .name = #call, \ |
Steven Rostedt | 8f08201 | 2010-04-20 10:47:33 -0400 | [diff] [blame] | 599 | .class = &event_class_##template, \ |
Steven Rostedt | 80decc7 | 2010-04-23 10:00:22 -0400 | [diff] [blame] | 600 | .event.funcs = &ftrace_event_type_funcs_##call, \ |
Lai Jiangshan | 509e760 | 2009-12-15 15:39:42 +0800 | [diff] [blame] | 601 | .print_fmt = print_fmt_##call, \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 602 | } |
| 603 | |
| 604 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
| 605 | |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 606 | /* |
Frederic Weisbecker | 97d5a22 | 2010-03-05 05:35:37 +0100 | [diff] [blame] | 607 | * Define the insertion callback to perf events |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 608 | * |
| 609 | * The job is very similar to ftrace_raw_event_<call> except that we don't |
| 610 | * insert in the ring buffer but in a perf counter. |
| 611 | * |
Frederic Weisbecker | 97d5a22 | 2010-03-05 05:35:37 +0100 | [diff] [blame] | 612 | * static void ftrace_perf_<call>(proto) |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 613 | * { |
| 614 | * struct ftrace_data_offsets_<call> __maybe_unused __data_offsets; |
| 615 | * struct ftrace_event_call *event_call = &event_<call>; |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 616 | * extern void perf_tp_event(int, u64, u64, void *, int); |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 617 | * struct ftrace_raw_##call *entry; |
Frederic Weisbecker | 444a2a3 | 2009-11-06 04:13:05 +0100 | [diff] [blame] | 618 | * struct perf_trace_buf *trace_buf; |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 619 | * u64 __addr = 0, __count = 1; |
| 620 | * unsigned long irq_flags; |
Frederic Weisbecker | 20ab4425 | 2009-09-18 06:10:28 +0200 | [diff] [blame] | 621 | * struct trace_entry *ent; |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 622 | * int __entry_size; |
| 623 | * int __data_size; |
Frederic Weisbecker | 20ab4425 | 2009-09-18 06:10:28 +0200 | [diff] [blame] | 624 | * int __cpu |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 625 | * int pc; |
| 626 | * |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 627 | * pc = preempt_count(); |
| 628 | * |
| 629 | * __data_size = ftrace_get_offsets_<call>(&__data_offsets, args); |
Frederic Weisbecker | 304703a | 2009-08-10 16:11:32 +0200 | [diff] [blame] | 630 | * |
| 631 | * // Below we want to get the aligned size by taking into account |
| 632 | * // the u32 field that will later store the buffer size |
| 633 | * __entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32), |
| 634 | * sizeof(u64)); |
| 635 | * __entry_size -= sizeof(u32); |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 636 | * |
Frederic Weisbecker | 20ab4425 | 2009-09-18 06:10:28 +0200 | [diff] [blame] | 637 | * // Protect the non nmi buffer |
| 638 | * // This also protects the rcu read side |
| 639 | * local_irq_save(irq_flags); |
| 640 | * __cpu = smp_processor_id(); |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 641 | * |
Frederic Weisbecker | 20ab4425 | 2009-09-18 06:10:28 +0200 | [diff] [blame] | 642 | * if (in_nmi()) |
Paul E. McKenney | 8d53dd5 | 2010-03-03 17:50:18 -0800 | [diff] [blame] | 643 | * trace_buf = rcu_dereference_sched(perf_trace_buf_nmi); |
Frederic Weisbecker | 20ab4425 | 2009-09-18 06:10:28 +0200 | [diff] [blame] | 644 | * else |
Paul E. McKenney | 8d53dd5 | 2010-03-03 17:50:18 -0800 | [diff] [blame] | 645 | * trace_buf = rcu_dereference_sched(perf_trace_buf); |
Frederic Weisbecker | 1853db0 | 2009-08-10 16:38:36 +0200 | [diff] [blame] | 646 | * |
Frederic Weisbecker | 444a2a3 | 2009-11-06 04:13:05 +0100 | [diff] [blame] | 647 | * if (!trace_buf) |
Frederic Weisbecker | 20ab4425 | 2009-09-18 06:10:28 +0200 | [diff] [blame] | 648 | * goto end; |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 649 | * |
Frederic Weisbecker | 444a2a3 | 2009-11-06 04:13:05 +0100 | [diff] [blame] | 650 | * trace_buf = per_cpu_ptr(trace_buf, __cpu); |
| 651 | * |
| 652 | * // Avoid recursion from perf that could mess up the buffer |
| 653 | * if (trace_buf->recursion++) |
| 654 | * goto end_recursion; |
| 655 | * |
| 656 | * raw_data = trace_buf->buf; |
| 657 | * |
| 658 | * // Make recursion update visible before entering perf_tp_event |
| 659 | * // so that we protect from perf recursions. |
| 660 | * |
| 661 | * barrier(); |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 662 | * |
Frederic Weisbecker | 20ab4425 | 2009-09-18 06:10:28 +0200 | [diff] [blame] | 663 | * //zero dead bytes from alignment to avoid stack leak to userspace: |
| 664 | * *(u64 *)(&raw_data[__entry_size - sizeof(u64)]) = 0ULL; |
| 665 | * entry = (struct ftrace_raw_<call> *)raw_data; |
| 666 | * ent = &entry->ent; |
| 667 | * tracing_generic_entry_update(ent, irq_flags, pc); |
| 668 | * ent->type = event_call->id; |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 669 | * |
Frederic Weisbecker | 20ab4425 | 2009-09-18 06:10:28 +0200 | [diff] [blame] | 670 | * <tstruct> <- do some jobs with dynamic arrays |
| 671 | * |
| 672 | * <assign> <- affect our values |
| 673 | * |
Linus Torvalds | 43c1266 | 2009-09-21 09:15:07 -0700 | [diff] [blame] | 674 | * perf_tp_event(event_call->id, __addr, __count, entry, |
Frederic Weisbecker | 20ab4425 | 2009-09-18 06:10:28 +0200 | [diff] [blame] | 675 | * __entry_size); <- submit them to perf counter |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 676 | * |
| 677 | * } |
| 678 | */ |
| 679 | |
Li Zefan | 07b139c | 2009-12-21 14:27:35 +0800 | [diff] [blame] | 680 | #ifdef CONFIG_PERF_EVENTS |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 681 | |
Lai Jiangshan | 509e760 | 2009-12-15 15:39:42 +0800 | [diff] [blame] | 682 | #undef __entry |
| 683 | #define __entry entry |
| 684 | |
| 685 | #undef __get_dynamic_array |
| 686 | #define __get_dynamic_array(field) \ |
| 687 | ((void *)__entry + (__entry->__data_loc_##field & 0xffff)) |
| 688 | |
| 689 | #undef __get_str |
| 690 | #define __get_str(field) (char *)__get_dynamic_array(field) |
| 691 | |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 692 | #undef __perf_addr |
| 693 | #define __perf_addr(a) __addr = (a) |
| 694 | |
| 695 | #undef __perf_count |
| 696 | #define __perf_count(c) __count = (c) |
| 697 | |
Ingo Molnar | 091ad36 | 2009-11-26 09:04:55 +0100 | [diff] [blame] | 698 | #undef DECLARE_EVENT_CLASS |
| 699 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ |
Steven Rostedt | 83f0d53 | 2010-02-16 10:38:47 -0500 | [diff] [blame] | 700 | static notrace void \ |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 701 | perf_trace_##call(void *__data, proto) \ |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 702 | { \ |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 703 | struct ftrace_event_call *event_call = __data; \ |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 704 | struct ftrace_data_offsets_##call __maybe_unused __data_offsets;\ |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 705 | struct ftrace_raw_##call *entry; \ |
Steven Rostedt | ff5f149 | 2010-05-21 11:49:57 -0400 | [diff] [blame] | 706 | struct pt_regs __regs; \ |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 707 | u64 __addr = 0, __count = 1; \ |
Peter Zijlstra | 1c024eca | 2010-05-19 14:02:22 +0200 | [diff] [blame] | 708 | struct hlist_head *head; \ |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 709 | int __entry_size; \ |
| 710 | int __data_size; \ |
Peter Zijlstra | 4ed7c92 | 2009-11-23 11:37:29 +0100 | [diff] [blame] | 711 | int rctx; \ |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 712 | \ |
Frederic Weisbecker | b0f82b8 | 2010-05-20 07:47:21 +0200 | [diff] [blame] | 713 | perf_fetch_caller_regs(&__regs); \ |
Steven Rostedt | f0218b3 | 2010-05-17 22:26:53 -0400 | [diff] [blame] | 714 | \ |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 715 | __data_size = ftrace_get_offsets_##call(&__data_offsets, args); \ |
Peter Zijlstra | a044560 | 2009-08-10 11:16:52 +0200 | [diff] [blame] | 716 | __entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32),\ |
| 717 | sizeof(u64)); \ |
Frederic Weisbecker | 304703a | 2009-08-10 16:11:32 +0200 | [diff] [blame] | 718 | __entry_size -= sizeof(u32); \ |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 719 | \ |
Frederic Weisbecker | 97d5a22 | 2010-03-05 05:35:37 +0100 | [diff] [blame] | 720 | if (WARN_ONCE(__entry_size > PERF_MAX_TRACE_SIZE, \ |
Frederic Weisbecker | 20ab4425 | 2009-09-18 06:10:28 +0200 | [diff] [blame] | 721 | "profile buffer not large enough")) \ |
| 722 | return; \ |
Peter Zijlstra | b7e2ece | 2010-05-19 10:52:27 +0200 | [diff] [blame] | 723 | \ |
Frederic Weisbecker | 97d5a22 | 2010-03-05 05:35:37 +0100 | [diff] [blame] | 724 | entry = (struct ftrace_raw_##call *)perf_trace_buf_prepare( \ |
Steven Rostedt | ff5f149 | 2010-05-21 11:49:57 -0400 | [diff] [blame] | 725 | __entry_size, event_call->event.type, &__regs, &rctx); \ |
Xiao Guangrong | 430ad5a | 2010-01-28 09:32:29 +0800 | [diff] [blame] | 726 | if (!entry) \ |
| 727 | return; \ |
Peter Zijlstra | b7e2ece | 2010-05-19 10:52:27 +0200 | [diff] [blame] | 728 | \ |
Frederic Weisbecker | 20ab4425 | 2009-09-18 06:10:28 +0200 | [diff] [blame] | 729 | tstruct \ |
| 730 | \ |
| 731 | { assign; } \ |
| 732 | \ |
Peter Zijlstra | 3771f07 | 2010-05-21 12:31:09 +0200 | [diff] [blame] | 733 | head = this_cpu_ptr(event_call->perf_events); \ |
Frederic Weisbecker | 97d5a22 | 2010-03-05 05:35:37 +0100 | [diff] [blame] | 734 | perf_trace_buf_submit(entry, __entry_size, rctx, __addr, \ |
Steven Rostedt | ff5f149 | 2010-05-21 11:49:57 -0400 | [diff] [blame] | 735 | __count, &__regs, head); \ |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 736 | } |
| 737 | |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 738 | /* |
| 739 | * This part is compiled out, it is only here as a build time check |
| 740 | * to make sure that if the tracepoint handling changes, the |
| 741 | * perf probe will fail to compile unless it too is updated. |
| 742 | */ |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 743 | #undef DEFINE_EVENT |
Frederic Weisbecker | 6cc8a7c | 2010-03-19 01:23:53 +0100 | [diff] [blame] | 744 | #define DEFINE_EVENT(template, call, proto, args) \ |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 745 | static inline void perf_test_probe_##call(void) \ |
Frederic Weisbecker | 6cc8a7c | 2010-03-19 01:23:53 +0100 | [diff] [blame] | 746 | { \ |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 747 | check_trace_callback_type_##call(perf_trace_##template); \ |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 748 | } |
| 749 | |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 750 | |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 751 | #undef DEFINE_EVENT_PRINT |
| 752 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ |
| 753 | DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) |
| 754 | |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 755 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
Li Zefan | 07b139c | 2009-12-21 14:27:35 +0800 | [diff] [blame] | 756 | #endif /* CONFIG_PERF_EVENTS */ |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 757 | |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 758 | #undef _TRACE_PROFILE_INIT |
| 759 | |