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> |
Pratik Patel | 8e1e6b6 | 2012-06-29 12:24:49 -0700 | [diff] [blame] | 20 | #include <linux/coresight-stm.h> |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 21 | |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 22 | /* |
Ingo Molnar | 091ad36 | 2009-11-26 09:04:55 +0100 | [diff] [blame] | 23 | * DECLARE_EVENT_CLASS can be used to add a generic function |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 24 | * handlers for events. That is, if all events have the same |
| 25 | * parameters and just have distinct trace points. |
| 26 | * Each tracepoint can be defined with DEFINE_EVENT and that |
Ingo Molnar | 091ad36 | 2009-11-26 09:04:55 +0100 | [diff] [blame] | 27 | * will map the DECLARE_EVENT_CLASS to the tracepoint. |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 28 | * |
| 29 | * TRACE_EVENT is a one to one mapping between tracepoint and template. |
| 30 | */ |
| 31 | #undef TRACE_EVENT |
| 32 | #define TRACE_EVENT(name, proto, args, tstruct, assign, print) \ |
Ingo Molnar | 091ad36 | 2009-11-26 09:04:55 +0100 | [diff] [blame] | 33 | DECLARE_EVENT_CLASS(name, \ |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 34 | PARAMS(proto), \ |
| 35 | PARAMS(args), \ |
| 36 | PARAMS(tstruct), \ |
| 37 | PARAMS(assign), \ |
| 38 | PARAMS(print)); \ |
| 39 | DEFINE_EVENT(name, name, PARAMS(proto), PARAMS(args)); |
| 40 | |
| 41 | |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 42 | #undef __field |
| 43 | #define __field(type, item) type item; |
| 44 | |
Li Zefan | 43b51ea | 2009-08-07 10:33:22 +0800 | [diff] [blame] | 45 | #undef __field_ext |
| 46 | #define __field_ext(type, item, filter_type) type item; |
| 47 | |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 48 | #undef __array |
| 49 | #define __array(type, item, len) type item[len]; |
| 50 | |
| 51 | #undef __dynamic_array |
Li Zefan | 7d536cb | 2009-07-16 10:54:02 +0800 | [diff] [blame] | 52 | #define __dynamic_array(type, item, len) u32 __data_loc_##item; |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 53 | |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 54 | #undef __string |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 55 | #define __string(item, src) __dynamic_array(char, item, -1) |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 56 | |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 57 | #undef TP_STRUCT__entry |
| 58 | #define TP_STRUCT__entry(args...) args |
| 59 | |
Ingo Molnar | 091ad36 | 2009-11-26 09:04:55 +0100 | [diff] [blame] | 60 | #undef DECLARE_EVENT_CLASS |
| 61 | #define DECLARE_EVENT_CLASS(name, proto, args, tstruct, assign, print) \ |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 62 | struct ftrace_raw_##name { \ |
| 63 | struct trace_entry ent; \ |
| 64 | tstruct \ |
| 65 | char __data[0]; \ |
Steven Rostedt | 8f08201 | 2010-04-20 10:47:33 -0400 | [diff] [blame] | 66 | }; \ |
| 67 | \ |
| 68 | static struct ftrace_event_class event_class_##name; |
| 69 | |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 70 | #undef DEFINE_EVENT |
| 71 | #define DEFINE_EVENT(template, name, proto, args) \ |
Steven Rostedt | 49c1774 | 2010-05-25 06:19:35 -0700 | [diff] [blame] | 72 | static struct ftrace_event_call __used \ |
Jeff Mahoney | 86c38a3 | 2010-02-24 13:59:23 -0500 | [diff] [blame] | 73 | __attribute__((__aligned__(4))) event_##name |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 74 | |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 75 | #undef DEFINE_EVENT_PRINT |
| 76 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ |
| 77 | DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) |
| 78 | |
Josh Stone | 9741987 | 2009-08-24 14:43:13 -0700 | [diff] [blame] | 79 | /* Callbacks are meaningless to ftrace. */ |
| 80 | #undef TRACE_EVENT_FN |
Frederic Weisbecker | 0dd7b74 | 2009-08-28 00:50:06 +0200 | [diff] [blame] | 81 | #define TRACE_EVENT_FN(name, proto, args, tstruct, \ |
| 82 | assign, print, reg, unreg) \ |
Frederic Weisbecker | 819ce45 | 2010-07-20 18:41:24 +0200 | [diff] [blame] | 83 | TRACE_EVENT(name, PARAMS(proto), PARAMS(args), \ |
| 84 | PARAMS(tstruct), PARAMS(assign), PARAMS(print)) \ |
Josh Stone | 9741987 | 2009-08-24 14:43:13 -0700 | [diff] [blame] | 85 | |
Frederic Weisbecker | 1ed0c59 | 2010-11-18 01:46:57 +0100 | [diff] [blame] | 86 | #undef TRACE_EVENT_FLAGS |
| 87 | #define TRACE_EVENT_FLAGS(name, value) \ |
Frederic Weisbecker | 53cf810b | 2010-11-18 02:11:42 +0100 | [diff] [blame] | 88 | __TRACE_EVENT_FLAGS(name, value) |
Frederic Weisbecker | 1ed0c59 | 2010-11-18 01:46:57 +0100 | [diff] [blame] | 89 | |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 90 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
| 91 | |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 92 | |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 93 | /* |
| 94 | * Stage 2 of the trace events. |
| 95 | * |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 96 | * Include the following: |
| 97 | * |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 98 | * struct ftrace_data_offsets_<call> { |
Li Zefan | 7d536cb | 2009-07-16 10:54:02 +0800 | [diff] [blame] | 99 | * u32 <item1>; |
| 100 | * u32 <item2>; |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 101 | * [...] |
| 102 | * }; |
| 103 | * |
Li Zefan | 7d536cb | 2009-07-16 10:54:02 +0800 | [diff] [blame] | 104 | * The __dynamic_array() macro will create each u32 <item>, this is |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 105 | * 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] | 106 | * 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] | 107 | */ |
| 108 | |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 109 | #undef __field |
Li Zefan | 43b51ea | 2009-08-07 10:33:22 +0800 | [diff] [blame] | 110 | #define __field(type, item) |
| 111 | |
| 112 | #undef __field_ext |
| 113 | #define __field_ext(type, item, filter_type) |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 114 | |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 115 | #undef __array |
| 116 | #define __array(type, item, len) |
| 117 | |
| 118 | #undef __dynamic_array |
Li Zefan | 7d536cb | 2009-07-16 10:54:02 +0800 | [diff] [blame] | 119 | #define __dynamic_array(type, item, len) u32 item; |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 120 | |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 121 | #undef __string |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 122 | #define __string(item, src) __dynamic_array(char, item, -1) |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 123 | |
Ingo Molnar | 091ad36 | 2009-11-26 09:04:55 +0100 | [diff] [blame] | 124 | #undef DECLARE_EVENT_CLASS |
| 125 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 126 | struct ftrace_data_offsets_##call { \ |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 127 | tstruct; \ |
| 128 | }; |
| 129 | |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 130 | #undef DEFINE_EVENT |
| 131 | #define DEFINE_EVENT(template, name, proto, args) |
| 132 | |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 133 | #undef DEFINE_EVENT_PRINT |
| 134 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ |
| 135 | DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) |
| 136 | |
Frederic Weisbecker | 1ed0c59 | 2010-11-18 01:46:57 +0100 | [diff] [blame] | 137 | #undef TRACE_EVENT_FLAGS |
| 138 | #define TRACE_EVENT_FLAGS(event, flag) |
| 139 | |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 140 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
| 141 | |
| 142 | /* |
| 143 | * Stage 3 of the trace events. |
| 144 | * |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 145 | * Override the macros in <trace/trace_events.h> to include the following: |
| 146 | * |
| 147 | * enum print_line_t |
| 148 | * ftrace_raw_output_<call>(struct trace_iterator *iter, int flags) |
| 149 | * { |
| 150 | * struct trace_seq *s = &iter->seq; |
| 151 | * struct ftrace_raw_<call> *field; <-- defined in stage 1 |
| 152 | * struct trace_entry *entry; |
Lai Jiangshan | bc289ae | 2010-06-03 18:26:24 +0800 | [diff] [blame] | 153 | * struct trace_seq *p = &iter->tmp_seq; |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 154 | * int ret; |
| 155 | * |
| 156 | * entry = iter->ent; |
| 157 | * |
Steven Rostedt | 32c0eda | 2010-04-23 10:38:03 -0400 | [diff] [blame] | 158 | * if (entry->type != event_<call>->event.type) { |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 159 | * WARN_ON_ONCE(1); |
| 160 | * return TRACE_TYPE_UNHANDLED; |
| 161 | * } |
| 162 | * |
| 163 | * field = (typeof(field))entry; |
| 164 | * |
Steven Whitehouse | 56d8bd3 | 2009-06-03 14:52:03 +0100 | [diff] [blame] | 165 | * trace_seq_init(p); |
Li Zefan | 50354a8 | 2010-03-24 10:58:24 +0800 | [diff] [blame] | 166 | * ret = trace_seq_printf(s, "%s: ", <call>); |
| 167 | * if (ret) |
| 168 | * ret = trace_seq_printf(s, <TP_printk> "\n"); |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 169 | * if (!ret) |
| 170 | * return TRACE_TYPE_PARTIAL_LINE; |
| 171 | * |
| 172 | * return TRACE_TYPE_HANDLED; |
| 173 | * } |
| 174 | * |
| 175 | * This is the method used to print the raw event to the trace |
| 176 | * output format. Note, this is not needed if the data is read |
| 177 | * in binary. |
| 178 | */ |
| 179 | |
| 180 | #undef __entry |
| 181 | #define __entry field |
| 182 | |
| 183 | #undef TP_printk |
| 184 | #define TP_printk(fmt, args...) fmt "\n", args |
| 185 | |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 186 | #undef __get_dynamic_array |
| 187 | #define __get_dynamic_array(field) \ |
Li Zefan | 7d536cb | 2009-07-16 10:54:02 +0800 | [diff] [blame] | 188 | ((void *)__entry + (__entry->__data_loc_##field & 0xffff)) |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 189 | |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 190 | #undef __get_str |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 191 | #define __get_str(field) (char *)__get_dynamic_array(field) |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 192 | |
Steven Rostedt | be74b73 | 2009-05-26 20:25:22 +0200 | [diff] [blame] | 193 | #undef __print_flags |
| 194 | #define __print_flags(flag, delim, flag_array...) \ |
| 195 | ({ \ |
Steven Rostedt | a48f494 | 2009-09-14 11:18:02 -0400 | [diff] [blame] | 196 | static const struct trace_print_flags __flags[] = \ |
Steven Rostedt | be74b73 | 2009-05-26 20:25:22 +0200 | [diff] [blame] | 197 | { flag_array, { -1, NULL }}; \ |
Steven Rostedt | a48f494 | 2009-09-14 11:18:02 -0400 | [diff] [blame] | 198 | ftrace_print_flags_seq(p, delim, flag, __flags); \ |
Steven Rostedt | be74b73 | 2009-05-26 20:25:22 +0200 | [diff] [blame] | 199 | }) |
| 200 | |
Steven Rostedt | 0f4fc29 | 2009-05-20 19:21:47 -0400 | [diff] [blame] | 201 | #undef __print_symbolic |
| 202 | #define __print_symbolic(value, symbol_array...) \ |
| 203 | ({ \ |
| 204 | static const struct trace_print_flags symbols[] = \ |
| 205 | { symbol_array, { -1, NULL }}; \ |
| 206 | ftrace_print_symbols_seq(p, value, symbols); \ |
| 207 | }) |
| 208 | |
liubo | 2fc1b6f | 2011-04-19 09:35:28 +0800 | [diff] [blame] | 209 | #undef __print_symbolic_u64 |
| 210 | #if BITS_PER_LONG == 32 |
| 211 | #define __print_symbolic_u64(value, symbol_array...) \ |
| 212 | ({ \ |
| 213 | static const struct trace_print_flags_u64 symbols[] = \ |
| 214 | { symbol_array, { -1, NULL } }; \ |
| 215 | ftrace_print_symbols_seq_u64(p, value, symbols); \ |
| 216 | }) |
| 217 | #else |
| 218 | #define __print_symbolic_u64(value, symbol_array...) \ |
| 219 | __print_symbolic(value, symbol_array) |
| 220 | #endif |
| 221 | |
Kei Tokunaga | 5a2e399 | 2010-04-01 20:40:58 +0900 | [diff] [blame] | 222 | #undef __print_hex |
| 223 | #define __print_hex(buf, buf_len) ftrace_print_hex_seq(p, buf, buf_len) |
| 224 | |
Ingo Molnar | 091ad36 | 2009-11-26 09:04:55 +0100 | [diff] [blame] | 225 | #undef DECLARE_EVENT_CLASS |
| 226 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ |
Steven Rostedt | 83f0d53 | 2010-02-16 10:38:47 -0500 | [diff] [blame] | 227 | static notrace enum print_line_t \ |
Steven Rostedt | 80decc7 | 2010-04-23 10:00:22 -0400 | [diff] [blame] | 228 | ftrace_raw_output_##call(struct trace_iterator *iter, int flags, \ |
| 229 | struct trace_event *trace_event) \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 230 | { \ |
Steven Rostedt | 80decc7 | 2010-04-23 10:00:22 -0400 | [diff] [blame] | 231 | struct ftrace_event_call *event; \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 232 | struct trace_seq *s = &iter->seq; \ |
| 233 | struct ftrace_raw_##call *field; \ |
| 234 | struct trace_entry *entry; \ |
Lai Jiangshan | bc289ae | 2010-06-03 18:26:24 +0800 | [diff] [blame] | 235 | struct trace_seq *p = &iter->tmp_seq; \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 236 | int ret; \ |
| 237 | \ |
Steven Rostedt | 80decc7 | 2010-04-23 10:00:22 -0400 | [diff] [blame] | 238 | event = container_of(trace_event, struct ftrace_event_call, \ |
| 239 | event); \ |
| 240 | \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 241 | entry = iter->ent; \ |
| 242 | \ |
Steven Rostedt | 32c0eda | 2010-04-23 10:38:03 -0400 | [diff] [blame] | 243 | if (entry->type != event->event.type) { \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 244 | WARN_ON_ONCE(1); \ |
| 245 | return TRACE_TYPE_UNHANDLED; \ |
| 246 | } \ |
| 247 | \ |
| 248 | field = (typeof(field))entry; \ |
| 249 | \ |
Steven Whitehouse | 56d8bd3 | 2009-06-03 14:52:03 +0100 | [diff] [blame] | 250 | trace_seq_init(p); \ |
Steven Rostedt | 80decc7 | 2010-04-23 10:00:22 -0400 | [diff] [blame] | 251 | ret = trace_seq_printf(s, "%s: ", event->name); \ |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 252 | if (ret) \ |
| 253 | ret = trace_seq_printf(s, print); \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 254 | if (!ret) \ |
| 255 | return TRACE_TYPE_PARTIAL_LINE; \ |
| 256 | \ |
| 257 | return TRACE_TYPE_HANDLED; \ |
Steven Rostedt | 80decc7 | 2010-04-23 10:00:22 -0400 | [diff] [blame] | 258 | } \ |
| 259 | static struct trace_event_functions ftrace_event_type_funcs_##call = { \ |
| 260 | .trace = ftrace_raw_output_##call, \ |
| 261 | }; |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 262 | |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 263 | #undef DEFINE_EVENT_PRINT |
| 264 | #define DEFINE_EVENT_PRINT(template, call, proto, args, print) \ |
Steven Rostedt | 83f0d53 | 2010-02-16 10:38:47 -0500 | [diff] [blame] | 265 | static notrace enum print_line_t \ |
Steven Rostedt | a9a5776 | 2010-04-22 18:46:14 -0400 | [diff] [blame] | 266 | ftrace_raw_output_##call(struct trace_iterator *iter, int flags, \ |
| 267 | struct trace_event *event) \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 268 | { \ |
| 269 | struct trace_seq *s = &iter->seq; \ |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 270 | struct ftrace_raw_##template *field; \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 271 | struct trace_entry *entry; \ |
Lai Jiangshan | bc289ae | 2010-06-03 18:26:24 +0800 | [diff] [blame] | 272 | struct trace_seq *p = &iter->tmp_seq; \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 273 | int ret; \ |
| 274 | \ |
| 275 | entry = iter->ent; \ |
| 276 | \ |
Steven Rostedt | 32c0eda | 2010-04-23 10:38:03 -0400 | [diff] [blame] | 277 | if (entry->type != event_##call.event.type) { \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 278 | WARN_ON_ONCE(1); \ |
| 279 | return TRACE_TYPE_UNHANDLED; \ |
| 280 | } \ |
| 281 | \ |
| 282 | field = (typeof(field))entry; \ |
| 283 | \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 284 | trace_seq_init(p); \ |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 285 | ret = trace_seq_printf(s, "%s: ", #call); \ |
| 286 | if (ret) \ |
| 287 | ret = trace_seq_printf(s, print); \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 288 | if (!ret) \ |
| 289 | return TRACE_TYPE_PARTIAL_LINE; \ |
| 290 | \ |
| 291 | return TRACE_TYPE_HANDLED; \ |
Steven Rostedt | 80decc7 | 2010-04-23 10:00:22 -0400 | [diff] [blame] | 292 | } \ |
| 293 | static struct trace_event_functions ftrace_event_type_funcs_##call = { \ |
| 294 | .trace = ftrace_raw_output_##call, \ |
| 295 | }; |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 296 | |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 297 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
| 298 | |
Li Zefan | 43b51ea | 2009-08-07 10:33:22 +0800 | [diff] [blame] | 299 | #undef __field_ext |
| 300 | #define __field_ext(type, item, filter_type) \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 301 | ret = trace_define_field(event_call, #type, #item, \ |
| 302 | offsetof(typeof(field), item), \ |
Li Zefan | 43b51ea | 2009-08-07 10:33:22 +0800 | [diff] [blame] | 303 | sizeof(field.item), \ |
| 304 | is_signed_type(type), filter_type); \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 305 | if (ret) \ |
| 306 | return ret; |
| 307 | |
Li Zefan | 43b51ea | 2009-08-07 10:33:22 +0800 | [diff] [blame] | 308 | #undef __field |
| 309 | #define __field(type, item) __field_ext(type, item, FILTER_OTHER) |
| 310 | |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 311 | #undef __array |
| 312 | #define __array(type, item, len) \ |
Steven Rostedt | 0429578 | 2010-11-12 22:32:11 -0500 | [diff] [blame] | 313 | do { \ |
| 314 | mutex_lock(&event_storage_mutex); \ |
| 315 | BUILD_BUG_ON(len > MAX_FILTER_STR_VAL); \ |
| 316 | snprintf(event_storage, sizeof(event_storage), \ |
| 317 | "%s[%d]", #type, len); \ |
| 318 | ret = trace_define_field(event_call, event_storage, #item, \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 319 | offsetof(typeof(field), item), \ |
Lai Jiangshan | fb7ae98 | 2009-12-15 15:39:38 +0800 | [diff] [blame] | 320 | sizeof(field.item), \ |
| 321 | is_signed_type(type), FILTER_OTHER); \ |
Steven Rostedt | 0429578 | 2010-11-12 22:32:11 -0500 | [diff] [blame] | 322 | mutex_unlock(&event_storage_mutex); \ |
| 323 | if (ret) \ |
| 324 | return ret; \ |
| 325 | } while (0); |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 326 | |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 327 | #undef __dynamic_array |
| 328 | #define __dynamic_array(type, item, len) \ |
Lai Jiangshan | 68fd60a | 2009-07-16 10:53:34 +0800 | [diff] [blame] | 329 | ret = trace_define_field(event_call, "__data_loc " #type "[]", #item, \ |
Li Zefan | 43b51ea | 2009-08-07 10:33:22 +0800 | [diff] [blame] | 330 | offsetof(typeof(field), __data_loc_##item), \ |
Lai Jiangshan | fb7ae98 | 2009-12-15 15:39:38 +0800 | [diff] [blame] | 331 | sizeof(field.__data_loc_##item), \ |
| 332 | is_signed_type(type), FILTER_OTHER); |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 333 | |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 334 | #undef __string |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 335 | #define __string(item, src) __dynamic_array(char, item, -1) |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 336 | |
Ingo Molnar | 091ad36 | 2009-11-26 09:04:55 +0100 | [diff] [blame] | 337 | #undef DECLARE_EVENT_CLASS |
| 338 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, func, print) \ |
Steven Rostedt | 83f0d53 | 2010-02-16 10:38:47 -0500 | [diff] [blame] | 339 | static int notrace \ |
Li Zefan | 14be96c | 2009-08-19 15:53:52 +0800 | [diff] [blame] | 340 | ftrace_define_fields_##call(struct ftrace_event_call *event_call) \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 341 | { \ |
| 342 | struct ftrace_raw_##call field; \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 343 | int ret; \ |
| 344 | \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 345 | tstruct; \ |
| 346 | \ |
| 347 | return ret; \ |
| 348 | } |
| 349 | |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 350 | #undef DEFINE_EVENT |
| 351 | #define DEFINE_EVENT(template, name, proto, args) |
| 352 | |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 353 | #undef DEFINE_EVENT_PRINT |
| 354 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ |
| 355 | DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) |
| 356 | |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 357 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
| 358 | |
| 359 | /* |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 360 | * remember the offset of each array from the beginning of the event. |
| 361 | */ |
| 362 | |
| 363 | #undef __entry |
| 364 | #define __entry entry |
| 365 | |
| 366 | #undef __field |
| 367 | #define __field(type, item) |
| 368 | |
Li Zefan | 43b51ea | 2009-08-07 10:33:22 +0800 | [diff] [blame] | 369 | #undef __field_ext |
| 370 | #define __field_ext(type, item, filter_type) |
| 371 | |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 372 | #undef __array |
| 373 | #define __array(type, item, len) |
| 374 | |
| 375 | #undef __dynamic_array |
| 376 | #define __dynamic_array(type, item, len) \ |
| 377 | __data_offsets->item = __data_size + \ |
| 378 | offsetof(typeof(*entry), __data); \ |
Li Zefan | 7d536cb | 2009-07-16 10:54:02 +0800 | [diff] [blame] | 379 | __data_offsets->item |= (len * sizeof(type)) << 16; \ |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 380 | __data_size += (len) * sizeof(type); |
| 381 | |
| 382 | #undef __string |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 383 | #define __string(item, src) __dynamic_array(char, item, strlen(src) + 1) |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 384 | |
Ingo Molnar | 091ad36 | 2009-11-26 09:04:55 +0100 | [diff] [blame] | 385 | #undef DECLARE_EVENT_CLASS |
| 386 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ |
Steven Rostedt | 83f0d53 | 2010-02-16 10:38:47 -0500 | [diff] [blame] | 387 | static inline notrace int ftrace_get_offsets_##call( \ |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 388 | struct ftrace_data_offsets_##call *__data_offsets, proto) \ |
| 389 | { \ |
| 390 | int __data_size = 0; \ |
| 391 | struct ftrace_raw_##call __maybe_unused *entry; \ |
| 392 | \ |
| 393 | tstruct; \ |
| 394 | \ |
| 395 | return __data_size; \ |
| 396 | } |
| 397 | |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 398 | #undef DEFINE_EVENT |
| 399 | #define DEFINE_EVENT(template, name, proto, args) |
| 400 | |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 401 | #undef DEFINE_EVENT_PRINT |
| 402 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ |
| 403 | DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) |
| 404 | |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 405 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
| 406 | |
| 407 | /* |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 408 | * Stage 4 of the trace events. |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 409 | * |
| 410 | * Override the macros in <trace/trace_events.h> to include the following: |
| 411 | * |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 412 | * For those macros defined with TRACE_EVENT: |
| 413 | * |
| 414 | * static struct ftrace_event_call event_<call>; |
| 415 | * |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 416 | * static void ftrace_raw_event_<call>(void *__data, proto) |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 417 | * { |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 418 | * struct ftrace_event_call *event_call = __data; |
Li Zefan | 50354a8 | 2010-03-24 10:58:24 +0800 | [diff] [blame] | 419 | * struct ftrace_data_offsets_<call> __maybe_unused __data_offsets; |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 420 | * struct ring_buffer_event *event; |
| 421 | * struct ftrace_raw_<call> *entry; <-- defined in stage 1 |
Steven Rostedt | e77405a | 2009-09-02 14:17:06 -0400 | [diff] [blame] | 422 | * struct ring_buffer *buffer; |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 423 | * unsigned long irq_flags; |
Li Zefan | 50354a8 | 2010-03-24 10:58:24 +0800 | [diff] [blame] | 424 | * int __data_size; |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 425 | * int pc; |
| 426 | * |
| 427 | * local_save_flags(irq_flags); |
| 428 | * pc = preempt_count(); |
| 429 | * |
Li Zefan | 50354a8 | 2010-03-24 10:58:24 +0800 | [diff] [blame] | 430 | * __data_size = ftrace_get_offsets_<call>(&__data_offsets, args); |
| 431 | * |
Steven Rostedt | e77405a | 2009-09-02 14:17:06 -0400 | [diff] [blame] | 432 | * event = trace_current_buffer_lock_reserve(&buffer, |
Steven Rostedt | 32c0eda | 2010-04-23 10:38:03 -0400 | [diff] [blame] | 433 | * event_<call>->event.type, |
Li Zefan | 50354a8 | 2010-03-24 10:58:24 +0800 | [diff] [blame] | 434 | * sizeof(*entry) + __data_size, |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 435 | * irq_flags, pc); |
| 436 | * if (!event) |
| 437 | * return; |
| 438 | * entry = ring_buffer_event_data(event); |
| 439 | * |
Li Zefan | 50354a8 | 2010-03-24 10:58:24 +0800 | [diff] [blame] | 440 | * { <assign>; } <-- Here we assign the entries by the __field and |
| 441 | * __array macros. |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 442 | * |
Li Zefan | 50354a8 | 2010-03-24 10:58:24 +0800 | [diff] [blame] | 443 | * if (!filter_current_check_discard(buffer, event_call, entry, event)) |
| 444 | * trace_current_buffer_unlock_commit(buffer, |
| 445 | * event, irq_flags, pc); |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 446 | * } |
| 447 | * |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 448 | * static struct trace_event ftrace_event_type_<call> = { |
| 449 | * .trace = ftrace_raw_output_<call>, <-- stage 2 |
| 450 | * }; |
| 451 | * |
Li Zefan | 50354a8 | 2010-03-24 10:58:24 +0800 | [diff] [blame] | 452 | * static const char print_fmt_<call>[] = <TP_printk>; |
| 453 | * |
Steven Rostedt | 8f08201 | 2010-04-20 10:47:33 -0400 | [diff] [blame] | 454 | * static struct ftrace_event_class __used event_class_<template> = { |
| 455 | * .system = "<system>", |
Steven Rostedt | 2e33af0 | 2010-04-22 10:35:55 -0400 | [diff] [blame] | 456 | * .define_fields = ftrace_define_fields_<call>, |
Steven Rostedt | 0405ab8 | 2010-04-22 11:46:44 -0400 | [diff] [blame] | 457 | * .fields = LIST_HEAD_INIT(event_class_##call.fields), |
| 458 | * .raw_init = trace_event_raw_init, |
| 459 | * .probe = ftrace_raw_event_##call, |
Steven Rostedt | a1d0ce8 | 2010-06-08 11:22:06 -0400 | [diff] [blame] | 460 | * .reg = ftrace_event_reg, |
Steven Rostedt | 8f08201 | 2010-04-20 10:47:33 -0400 | [diff] [blame] | 461 | * }; |
| 462 | * |
Steven Rostedt | e4a9ea5 | 2011-01-27 09:15:30 -0500 | [diff] [blame] | 463 | * static struct ftrace_event_call event_<call> = { |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 464 | * .name = "<call>", |
Steven Rostedt | 8f08201 | 2010-04-20 10:47:33 -0400 | [diff] [blame] | 465 | * .class = event_class_<template>, |
Steven Rostedt | 2e33af0 | 2010-04-22 10:35:55 -0400 | [diff] [blame] | 466 | * .event = &ftrace_event_type_<call>, |
Li Zefan | 50354a8 | 2010-03-24 10:58:24 +0800 | [diff] [blame] | 467 | * .print_fmt = print_fmt_<call>, |
Steven Rostedt | 8f08201 | 2010-04-20 10:47:33 -0400 | [diff] [blame] | 468 | * }; |
Steven Rostedt | e4a9ea5 | 2011-01-27 09:15:30 -0500 | [diff] [blame] | 469 | * // its only safe to use pointers when doing linker tricks to |
| 470 | * // create an array. |
| 471 | * static struct ftrace_event_call __used |
| 472 | * __attribute__((section("_ftrace_events"))) *__event_<call> = &event_<call>; |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 473 | * |
| 474 | */ |
| 475 | |
Li Zefan | 07b139c | 2009-12-21 14:27:35 +0800 | [diff] [blame] | 476 | #ifdef CONFIG_PERF_EVENTS |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 477 | |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 478 | #define _TRACE_PERF_PROTO(call, proto) \ |
| 479 | static notrace void \ |
| 480 | perf_trace_##call(void *__data, proto); |
| 481 | |
Frederic Weisbecker | 97d5a22 | 2010-03-05 05:35:37 +0100 | [diff] [blame] | 482 | #define _TRACE_PERF_INIT(call) \ |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 483 | .perf_probe = perf_trace_##call, |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 484 | |
| 485 | #else |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 486 | #define _TRACE_PERF_PROTO(call, proto) |
Frederic Weisbecker | 97d5a22 | 2010-03-05 05:35:37 +0100 | [diff] [blame] | 487 | #define _TRACE_PERF_INIT(call) |
Li Zefan | 07b139c | 2009-12-21 14:27:35 +0800 | [diff] [blame] | 488 | #endif /* CONFIG_PERF_EVENTS */ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 489 | |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 490 | #undef __entry |
| 491 | #define __entry entry |
| 492 | |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 493 | #undef __field |
| 494 | #define __field(type, item) |
| 495 | |
| 496 | #undef __array |
| 497 | #define __array(type, item, len) |
| 498 | |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 499 | #undef __dynamic_array |
| 500 | #define __dynamic_array(type, item, len) \ |
| 501 | __entry->__data_loc_##item = __data_offsets.item; |
| 502 | |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 503 | #undef __string |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 504 | #define __string(item, src) __dynamic_array(char, item, -1) \ |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 505 | |
| 506 | #undef __assign_str |
| 507 | #define __assign_str(dst, src) \ |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 508 | strcpy(__get_str(dst), src); |
| 509 | |
Lai Jiangshan | 0fa0eda | 2009-12-15 15:39:57 +0800 | [diff] [blame] | 510 | #undef TP_fast_assign |
| 511 | #define TP_fast_assign(args...) args |
| 512 | |
| 513 | #undef TP_perf_assign |
| 514 | #define TP_perf_assign(args...) |
| 515 | |
Ingo Molnar | 091ad36 | 2009-11-26 09:04:55 +0100 | [diff] [blame] | 516 | #undef DECLARE_EVENT_CLASS |
| 517 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 518 | \ |
Steven Rostedt | 83f0d53 | 2010-02-16 10:38:47 -0500 | [diff] [blame] | 519 | static notrace void \ |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 520 | ftrace_raw_event_##call(void *__data, proto) \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 521 | { \ |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 522 | struct ftrace_event_call *event_call = __data; \ |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 523 | struct ftrace_data_offsets_##call __maybe_unused __data_offsets;\ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 524 | struct ring_buffer_event *event; \ |
| 525 | struct ftrace_raw_##call *entry; \ |
Steven Rostedt | e77405a | 2009-09-02 14:17:06 -0400 | [diff] [blame] | 526 | struct ring_buffer *buffer; \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 527 | unsigned long irq_flags; \ |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 528 | int __data_size; \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 529 | int pc; \ |
| 530 | \ |
| 531 | local_save_flags(irq_flags); \ |
| 532 | pc = preempt_count(); \ |
| 533 | \ |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 534 | __data_size = ftrace_get_offsets_##call(&__data_offsets, args); \ |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 535 | \ |
Steven Rostedt | e77405a | 2009-09-02 14:17:06 -0400 | [diff] [blame] | 536 | event = trace_current_buffer_lock_reserve(&buffer, \ |
Steven Rostedt | 32c0eda | 2010-04-23 10:38:03 -0400 | [diff] [blame] | 537 | event_call->event.type, \ |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 538 | sizeof(*entry) + __data_size, \ |
Frederic Weisbecker | 9cbf117 | 2009-04-19 04:51:29 +0200 | [diff] [blame] | 539 | irq_flags, pc); \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 540 | if (!event) \ |
| 541 | return; \ |
| 542 | entry = ring_buffer_event_data(event); \ |
| 543 | \ |
Li Zefan | 7fcb7c4 | 2009-06-01 15:35:46 +0800 | [diff] [blame] | 544 | tstruct \ |
| 545 | \ |
Li Zefan | a9c1c3a | 2009-06-01 15:35:13 +0800 | [diff] [blame] | 546 | { assign; } \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 547 | \ |
Pratik Patel | 8e1e6b6 | 2012-06-29 12:24:49 -0700 | [diff] [blame] | 548 | if (!filter_current_check_discard(buffer, event_call, entry, event)) { \ |
| 549 | stm_log(OST_ENTITY_FTRACE_EVENTS, entry, \ |
| 550 | sizeof(*entry) + __data_size); \ |
Steven Rostedt | e77405a | 2009-09-02 14:17:06 -0400 | [diff] [blame] | 551 | trace_nowake_buffer_unlock_commit(buffer, \ |
| 552 | event, irq_flags, pc); \ |
Pratik Patel | 8e1e6b6 | 2012-06-29 12:24:49 -0700 | [diff] [blame] | 553 | } \ |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 554 | } |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 555 | /* |
| 556 | * The ftrace_test_probe is compiled out, it is only here as a build time check |
| 557 | * to make sure that if the tracepoint handling changes, the ftrace probe will |
| 558 | * fail to compile unless it too is updated. |
| 559 | */ |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 560 | |
| 561 | #undef DEFINE_EVENT |
| 562 | #define DEFINE_EVENT(template, call, proto, args) \ |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 563 | static inline void ftrace_test_probe_##call(void) \ |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 564 | { \ |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 565 | check_trace_callback_type_##call(ftrace_raw_event_##template); \ |
| 566 | } |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 567 | |
| 568 | #undef DEFINE_EVENT_PRINT |
Steven Rostedt | 80decc7 | 2010-04-23 10:00:22 -0400 | [diff] [blame] | 569 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 570 | |
| 571 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
| 572 | |
Lai Jiangshan | 509e760 | 2009-12-15 15:39:42 +0800 | [diff] [blame] | 573 | #undef __entry |
| 574 | #define __entry REC |
| 575 | |
| 576 | #undef __print_flags |
| 577 | #undef __print_symbolic |
| 578 | #undef __get_dynamic_array |
| 579 | #undef __get_str |
| 580 | |
| 581 | #undef TP_printk |
| 582 | #define TP_printk(fmt, args...) "\"" fmt "\", " __stringify(args) |
| 583 | |
Ingo Molnar | 091ad36 | 2009-11-26 09:04:55 +0100 | [diff] [blame] | 584 | #undef DECLARE_EVENT_CLASS |
Lai Jiangshan | 509e760 | 2009-12-15 15:39:42 +0800 | [diff] [blame] | 585 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 586 | _TRACE_PERF_PROTO(call, PARAMS(proto)); \ |
Steven Rostedt | 8f08201 | 2010-04-20 10:47:33 -0400 | [diff] [blame] | 587 | static const char print_fmt_##call[] = print; \ |
| 588 | static struct ftrace_event_class __used event_class_##call = { \ |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 589 | .system = __stringify(TRACE_SYSTEM), \ |
Steven Rostedt | 2e33af0 | 2010-04-22 10:35:55 -0400 | [diff] [blame] | 590 | .define_fields = ftrace_define_fields_##call, \ |
| 591 | .fields = LIST_HEAD_INIT(event_class_##call.fields),\ |
Steven Rostedt | 0405ab8 | 2010-04-22 11:46:44 -0400 | [diff] [blame] | 592 | .raw_init = trace_event_raw_init, \ |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 593 | .probe = ftrace_raw_event_##call, \ |
Steven Rostedt | a1d0ce8 | 2010-06-08 11:22:06 -0400 | [diff] [blame] | 594 | .reg = ftrace_event_reg, \ |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 595 | _TRACE_PERF_INIT(call) \ |
Steven Rostedt | 8f08201 | 2010-04-20 10:47:33 -0400 | [diff] [blame] | 596 | }; |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 597 | |
| 598 | #undef DEFINE_EVENT |
| 599 | #define DEFINE_EVENT(template, call, proto, args) \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 600 | \ |
Steven Rostedt | e4a9ea5 | 2011-01-27 09:15:30 -0500 | [diff] [blame] | 601 | static struct ftrace_event_call __used event_##call = { \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 602 | .name = #call, \ |
Steven Rostedt | 8f08201 | 2010-04-20 10:47:33 -0400 | [diff] [blame] | 603 | .class = &event_class_##template, \ |
Steven Rostedt | 80decc7 | 2010-04-23 10:00:22 -0400 | [diff] [blame] | 604 | .event.funcs = &ftrace_event_type_funcs_##template, \ |
Lai Jiangshan | 509e760 | 2009-12-15 15:39:42 +0800 | [diff] [blame] | 605 | .print_fmt = print_fmt_##template, \ |
Steven Rostedt | e4a9ea5 | 2011-01-27 09:15:30 -0500 | [diff] [blame] | 606 | }; \ |
| 607 | static struct ftrace_event_call __used \ |
| 608 | __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 609 | |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 610 | #undef DEFINE_EVENT_PRINT |
| 611 | #define DEFINE_EVENT_PRINT(template, call, proto, args, print) \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 612 | \ |
Lai Jiangshan | 509e760 | 2009-12-15 15:39:42 +0800 | [diff] [blame] | 613 | static const char print_fmt_##call[] = print; \ |
| 614 | \ |
Steven Rostedt | e4a9ea5 | 2011-01-27 09:15:30 -0500 | [diff] [blame] | 615 | static struct ftrace_event_call __used event_##call = { \ |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 616 | .name = #call, \ |
Steven Rostedt | 8f08201 | 2010-04-20 10:47:33 -0400 | [diff] [blame] | 617 | .class = &event_class_##template, \ |
Steven Rostedt | 80decc7 | 2010-04-23 10:00:22 -0400 | [diff] [blame] | 618 | .event.funcs = &ftrace_event_type_funcs_##call, \ |
Lai Jiangshan | 509e760 | 2009-12-15 15:39:42 +0800 | [diff] [blame] | 619 | .print_fmt = print_fmt_##call, \ |
Steven Rostedt | e4a9ea5 | 2011-01-27 09:15:30 -0500 | [diff] [blame] | 620 | }; \ |
| 621 | static struct ftrace_event_call __used \ |
| 622 | __attribute__((section("_ftrace_events"))) *__event_##call = &event_##call |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 623 | |
| 624 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
| 625 | |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 626 | /* |
Frederic Weisbecker | 97d5a22 | 2010-03-05 05:35:37 +0100 | [diff] [blame] | 627 | * Define the insertion callback to perf events |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 628 | * |
| 629 | * The job is very similar to ftrace_raw_event_<call> except that we don't |
| 630 | * insert in the ring buffer but in a perf counter. |
| 631 | * |
Frederic Weisbecker | 97d5a22 | 2010-03-05 05:35:37 +0100 | [diff] [blame] | 632 | * static void ftrace_perf_<call>(proto) |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 633 | * { |
| 634 | * struct ftrace_data_offsets_<call> __maybe_unused __data_offsets; |
| 635 | * struct ftrace_event_call *event_call = &event_<call>; |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 636 | * extern void perf_tp_event(int, u64, u64, void *, int); |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 637 | * struct ftrace_raw_##call *entry; |
Frederic Weisbecker | 444a2a3 | 2009-11-06 04:13:05 +0100 | [diff] [blame] | 638 | * struct perf_trace_buf *trace_buf; |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 639 | * u64 __addr = 0, __count = 1; |
| 640 | * unsigned long irq_flags; |
Frederic Weisbecker | 20ab442 | 2009-09-18 06:10:28 +0200 | [diff] [blame] | 641 | * struct trace_entry *ent; |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 642 | * int __entry_size; |
| 643 | * int __data_size; |
Frederic Weisbecker | 20ab442 | 2009-09-18 06:10:28 +0200 | [diff] [blame] | 644 | * int __cpu |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 645 | * int pc; |
| 646 | * |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 647 | * pc = preempt_count(); |
| 648 | * |
| 649 | * __data_size = ftrace_get_offsets_<call>(&__data_offsets, args); |
Frederic Weisbecker | 304703a | 2009-08-10 16:11:32 +0200 | [diff] [blame] | 650 | * |
| 651 | * // Below we want to get the aligned size by taking into account |
| 652 | * // the u32 field that will later store the buffer size |
| 653 | * __entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32), |
| 654 | * sizeof(u64)); |
| 655 | * __entry_size -= sizeof(u32); |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 656 | * |
Frederic Weisbecker | 20ab442 | 2009-09-18 06:10:28 +0200 | [diff] [blame] | 657 | * // Protect the non nmi buffer |
| 658 | * // This also protects the rcu read side |
| 659 | * local_irq_save(irq_flags); |
| 660 | * __cpu = smp_processor_id(); |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 661 | * |
Frederic Weisbecker | 20ab442 | 2009-09-18 06:10:28 +0200 | [diff] [blame] | 662 | * if (in_nmi()) |
Paul E. McKenney | 8d53dd5 | 2010-03-03 17:50:18 -0800 | [diff] [blame] | 663 | * trace_buf = rcu_dereference_sched(perf_trace_buf_nmi); |
Frederic Weisbecker | 20ab442 | 2009-09-18 06:10:28 +0200 | [diff] [blame] | 664 | * else |
Paul E. McKenney | 8d53dd5 | 2010-03-03 17:50:18 -0800 | [diff] [blame] | 665 | * trace_buf = rcu_dereference_sched(perf_trace_buf); |
Frederic Weisbecker | 1853db0 | 2009-08-10 16:38:36 +0200 | [diff] [blame] | 666 | * |
Frederic Weisbecker | 444a2a3 | 2009-11-06 04:13:05 +0100 | [diff] [blame] | 667 | * if (!trace_buf) |
Frederic Weisbecker | 20ab442 | 2009-09-18 06:10:28 +0200 | [diff] [blame] | 668 | * goto end; |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 669 | * |
Frederic Weisbecker | 444a2a3 | 2009-11-06 04:13:05 +0100 | [diff] [blame] | 670 | * trace_buf = per_cpu_ptr(trace_buf, __cpu); |
| 671 | * |
| 672 | * // Avoid recursion from perf that could mess up the buffer |
| 673 | * if (trace_buf->recursion++) |
| 674 | * goto end_recursion; |
| 675 | * |
| 676 | * raw_data = trace_buf->buf; |
| 677 | * |
| 678 | * // Make recursion update visible before entering perf_tp_event |
| 679 | * // so that we protect from perf recursions. |
| 680 | * |
| 681 | * barrier(); |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 682 | * |
Frederic Weisbecker | 20ab442 | 2009-09-18 06:10:28 +0200 | [diff] [blame] | 683 | * //zero dead bytes from alignment to avoid stack leak to userspace: |
| 684 | * *(u64 *)(&raw_data[__entry_size - sizeof(u64)]) = 0ULL; |
| 685 | * entry = (struct ftrace_raw_<call> *)raw_data; |
| 686 | * ent = &entry->ent; |
| 687 | * tracing_generic_entry_update(ent, irq_flags, pc); |
| 688 | * ent->type = event_call->id; |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 689 | * |
Frederic Weisbecker | 20ab442 | 2009-09-18 06:10:28 +0200 | [diff] [blame] | 690 | * <tstruct> <- do some jobs with dynamic arrays |
| 691 | * |
| 692 | * <assign> <- affect our values |
| 693 | * |
Linus Torvalds | 43c1266 | 2009-09-21 09:15:07 -0700 | [diff] [blame] | 694 | * perf_tp_event(event_call->id, __addr, __count, entry, |
Frederic Weisbecker | 20ab442 | 2009-09-18 06:10:28 +0200 | [diff] [blame] | 695 | * __entry_size); <- submit them to perf counter |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 696 | * |
| 697 | * } |
| 698 | */ |
| 699 | |
Li Zefan | 07b139c | 2009-12-21 14:27:35 +0800 | [diff] [blame] | 700 | #ifdef CONFIG_PERF_EVENTS |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 701 | |
Lai Jiangshan | 509e760 | 2009-12-15 15:39:42 +0800 | [diff] [blame] | 702 | #undef __entry |
| 703 | #define __entry entry |
| 704 | |
| 705 | #undef __get_dynamic_array |
| 706 | #define __get_dynamic_array(field) \ |
| 707 | ((void *)__entry + (__entry->__data_loc_##field & 0xffff)) |
| 708 | |
| 709 | #undef __get_str |
| 710 | #define __get_str(field) (char *)__get_dynamic_array(field) |
| 711 | |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 712 | #undef __perf_addr |
| 713 | #define __perf_addr(a) __addr = (a) |
| 714 | |
| 715 | #undef __perf_count |
| 716 | #define __perf_count(c) __count = (c) |
| 717 | |
Andrew Vagin | 92e5193 | 2011-09-26 19:55:32 +0400 | [diff] [blame] | 718 | #undef TP_perf_assign |
| 719 | #define TP_perf_assign(args...) args |
| 720 | |
Ingo Molnar | 091ad36 | 2009-11-26 09:04:55 +0100 | [diff] [blame] | 721 | #undef DECLARE_EVENT_CLASS |
| 722 | #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ |
Steven Rostedt | 83f0d53 | 2010-02-16 10:38:47 -0500 | [diff] [blame] | 723 | static notrace void \ |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 724 | perf_trace_##call(void *__data, proto) \ |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 725 | { \ |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 726 | struct ftrace_event_call *event_call = __data; \ |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 727 | struct ftrace_data_offsets_##call __maybe_unused __data_offsets;\ |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 728 | struct ftrace_raw_##call *entry; \ |
Steven Rostedt | ff5f149 | 2010-05-21 11:49:57 -0400 | [diff] [blame] | 729 | struct pt_regs __regs; \ |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 730 | u64 __addr = 0, __count = 1; \ |
Peter Zijlstra | 1c024eca | 2010-05-19 14:02:22 +0200 | [diff] [blame] | 731 | struct hlist_head *head; \ |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 732 | int __entry_size; \ |
| 733 | int __data_size; \ |
Peter Zijlstra | 4ed7c92 | 2009-11-23 11:37:29 +0100 | [diff] [blame] | 734 | int rctx; \ |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 735 | \ |
Frederic Weisbecker | b0f82b8 | 2010-05-20 07:47:21 +0200 | [diff] [blame] | 736 | perf_fetch_caller_regs(&__regs); \ |
Steven Rostedt | f0218b3 | 2010-05-17 22:26:53 -0400 | [diff] [blame] | 737 | \ |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 738 | __data_size = ftrace_get_offsets_##call(&__data_offsets, args); \ |
Peter Zijlstra | a044560 | 2009-08-10 11:16:52 +0200 | [diff] [blame] | 739 | __entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32),\ |
| 740 | sizeof(u64)); \ |
Frederic Weisbecker | 304703a | 2009-08-10 16:11:32 +0200 | [diff] [blame] | 741 | __entry_size -= sizeof(u32); \ |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 742 | \ |
Frederic Weisbecker | 97d5a22 | 2010-03-05 05:35:37 +0100 | [diff] [blame] | 743 | if (WARN_ONCE(__entry_size > PERF_MAX_TRACE_SIZE, \ |
Frederic Weisbecker | 20ab442 | 2009-09-18 06:10:28 +0200 | [diff] [blame] | 744 | "profile buffer not large enough")) \ |
| 745 | return; \ |
Peter Zijlstra | b7e2ece | 2010-05-19 10:52:27 +0200 | [diff] [blame] | 746 | \ |
Frederic Weisbecker | 97d5a22 | 2010-03-05 05:35:37 +0100 | [diff] [blame] | 747 | entry = (struct ftrace_raw_##call *)perf_trace_buf_prepare( \ |
Steven Rostedt | ff5f149 | 2010-05-21 11:49:57 -0400 | [diff] [blame] | 748 | __entry_size, event_call->event.type, &__regs, &rctx); \ |
Xiao Guangrong | 430ad5a | 2010-01-28 09:32:29 +0800 | [diff] [blame] | 749 | if (!entry) \ |
| 750 | return; \ |
Peter Zijlstra | b7e2ece | 2010-05-19 10:52:27 +0200 | [diff] [blame] | 751 | \ |
Frederic Weisbecker | 20ab442 | 2009-09-18 06:10:28 +0200 | [diff] [blame] | 752 | tstruct \ |
| 753 | \ |
| 754 | { assign; } \ |
| 755 | \ |
Peter Zijlstra | 3771f07 | 2010-05-21 12:31:09 +0200 | [diff] [blame] | 756 | head = this_cpu_ptr(event_call->perf_events); \ |
Frederic Weisbecker | 97d5a22 | 2010-03-05 05:35:37 +0100 | [diff] [blame] | 757 | perf_trace_buf_submit(entry, __entry_size, rctx, __addr, \ |
Steven Rostedt | ff5f149 | 2010-05-21 11:49:57 -0400 | [diff] [blame] | 758 | __count, &__regs, head); \ |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 759 | } |
| 760 | |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 761 | /* |
| 762 | * This part is compiled out, it is only here as a build time check |
| 763 | * to make sure that if the tracepoint handling changes, the |
| 764 | * perf probe will fail to compile unless it too is updated. |
| 765 | */ |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 766 | #undef DEFINE_EVENT |
Frederic Weisbecker | 6cc8a7c | 2010-03-19 01:23:53 +0100 | [diff] [blame] | 767 | #define DEFINE_EVENT(template, call, proto, args) \ |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 768 | static inline void perf_test_probe_##call(void) \ |
Frederic Weisbecker | 6cc8a7c | 2010-03-19 01:23:53 +0100 | [diff] [blame] | 769 | { \ |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 770 | check_trace_callback_type_##call(perf_trace_##template); \ |
Steven Rostedt | ff038f5 | 2009-11-18 20:27:27 -0500 | [diff] [blame] | 771 | } |
| 772 | |
Steven Rostedt | 2239291 | 2010-04-21 12:27:06 -0400 | [diff] [blame] | 773 | |
Steven Rostedt | e5bc972 | 2009-11-18 20:36:26 -0500 | [diff] [blame] | 774 | #undef DEFINE_EVENT_PRINT |
| 775 | #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ |
| 776 | DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) |
| 777 | |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 778 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) |
Li Zefan | 07b139c | 2009-12-21 14:27:35 +0800 | [diff] [blame] | 779 | #endif /* CONFIG_PERF_EVENTS */ |
Frederic Weisbecker | f413cdb | 2009-08-07 01:25:54 +0200 | [diff] [blame] | 780 | |
Steven Rostedt | f42c85e | 2009-04-13 12:25:37 -0400 | [diff] [blame] | 781 | #undef _TRACE_PROFILE_INIT |
| 782 | |