Update the comment of the 3rd stage of trace event macro expansion code. Now there are 2 macros makes different trace_raw_output_<call>() functions. Link: https://lkml.kernel.org/r/160277371605.29307.8586817119278606720.stgit@devnote2
Unified · Split
| @@ -231,9 +231,11 @@ TRACE_MAKE_SYSTEM_STR(); · 230 unmodified lines | ||
| 231 | 231 | * { |
| 232 | 232 | * struct trace_seq *s = &iter->seq; |
| 233 | 233 | * struct trace_event_raw_<call> *field; <-- defined in stage 1 |
| 234 | − * struct trace_entry *entry; | |
| 235 | 234 | * struct trace_seq *p = &iter->tmp_seq; |
| 236 | − * int ret; | |
| 235 | + * | |
| 236 | + * -------(for event)------- | |
| 237 | + * | |
| 238 | + * struct trace_entry *entry; | |
| 237 | 239 | * |
| 238 | 240 | * entry = iter->ent; |
| 239 | 241 | * |
| @@ -245,14 +247,23 @@ TRACE_MAKE_SYSTEM_STR(); · 5 unmodified lines | ||
| 245 | 247 | * field = (typeof(field))entry; |
| 246 | 248 | * |
| 247 | 249 | * trace_seq_init(p); |
| 248 | − * ret = trace_seq_printf(s, "%s: ", <call>); | |
| 249 | − * if (ret) | |
| 250 | − * ret = trace_seq_printf(s, <TP_printk> "\n"); | |
| 251 | − * if (!ret) | |
| 252 | − * return TRACE_TYPE_PARTIAL_LINE; | |
| 250 | + * return trace_output_call(iter, <call>, <TP_printk> "\n"); | |
| 253 | 251 | * |
| 254 | − * return TRACE_TYPE_HANDLED; | |
| 255 | − * } | |
| 252 | + * ------(or, for event class)------ | |
| 253 | + * | |
| 254 | + * int ret; | |
| 255 | + * | |
| 256 | + * field = (typeof(field))iter->ent; | |
| 257 | + * | |
| 258 | + * ret = trace_raw_output_prep(iter, trace_event); | |
| 259 | + * if (ret != TRACE_TYPE_HANDLED) | |
| 260 | + * return ret; | |
| 261 | + * | |
| 262 | + * trace_event_printf(iter, <TP_printk> "\n"); | |
| 263 | + * | |
| 264 | + * return trace_handle_return(s); | |
| 265 | + * ------- | |
| 266 | + * } | |
| 256 | 267 | * |
| 257 | 268 | * This is the method used to print the raw event to the trace |
| 258 | 269 | * output format. Note, this is not needed if the data is read |