diff options
| -rw-r--r-- | plugins/plugin_function.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/plugins/plugin_function.c b/plugins/plugin_function.c index 93bdcc2..7777569 100644 --- a/plugins/plugin_function.c +++ b/plugins/plugin_function.c @@ -10,6 +10,11 @@ #include "event-utils.h" #include "trace-seq.h" +#define __weak __attribute__((weak)) + +/* Export this for applications to override it */ +__weak const char *tep_func_repeat_format = "%6.1000d"; + static struct func_stack { int size; char **stack; @@ -169,6 +174,36 @@ static int function_handler(struct trace_seq *s, struct tep_record *record, return 0; } +static int trace_func_repeat_handler(struct trace_seq *s, struct tep_record *record, + struct tep_event *event, void *context) +{ + struct tep_handle *tep = event->tep; + unsigned long long count, top_delta, bottom_delta; + struct tep_record dummy; + + function_handler(s, record, event, context); + + if (tep_get_field_val(s, event, "count", record, &count, 1)) + return trace_seq_putc(s, '!'); + + if (tep_get_field_val(s, event, "top_delta_ts", record, &top_delta, 1)) + return trace_seq_putc(s, '!'); + + if (tep_get_field_val(s, event, "bottom_delta_ts", record, &bottom_delta, 1)) + return trace_seq_putc(s, '!'); + + trace_seq_printf(s, " (count: %lld last_ts: ", count); + + memcpy(&dummy, record, sizeof(dummy)); + dummy.ts -= (top_delta << 32) | bottom_delta; + + tep_print_event(tep, s, &dummy, tep_func_repeat_format, TEP_PRINT_TIME); + + trace_seq_puts(s, ")"); + + return 0; +} + static int trace_stack_handler(struct trace_seq *s, struct tep_record *record, struct tep_event *event, void *context) @@ -256,6 +291,9 @@ int TEP_PLUGIN_LOADER(struct tep_handle *tep) tep_register_event_handler(tep, -1, "ftrace", "raw_data", trace_raw_data_handler, NULL); + tep_register_event_handler(tep, -1, "ftrace", "func_repeats", + trace_func_repeat_handler, NULL); + tep_plugin_add_options("ftrace", plugin_options); return 0; |