Lines Matching refs:hist

355  * trace_event_save_hist - save the content of an event hist
357  * If the trigger is a hist: one, save the content of the hist file.
365 	char *hist;
371 	/* trigger enables hist */
375 	/* is this a hist: trigger? */
376 	if (!str_has_prefix(tevent->trigger, "hist:"))
381 	printf("  Saving event %s:%s hist to %s\n", tevent->system, tevent->event, path);
389 	hist = tracefs_event_file_read(instance->inst, tevent->system, tevent->event, "hist", 0);
390 	if (!hist) {
391 		err_msg("  Failed to read %s:%s hist file\n", tevent->system, tevent->event);
396 	hist_len = strlen(hist);
398 		const ssize_t written = write(out_fd, &hist[index], hist_len - index);
403 			err_msg("  Error writing hist file: %s\n", strerror(errno));
409 	free(hist);