perf tools: Fix tracepoint id to string perf.data header table

It was broken by f006d25 that passed just the event name, not the complete
sys:event that it expected to open the /sys/.../sys/sys:event/id file to get
the id.

Fix it by moving it to after parse_events in cmd_record, as at that point
we can just traverse the evsel_list and use evsel->attr.config +
event_name(evsel) instead of re-opening the /id file.

Reported-by: Franck Bui-Huu <[e-mail]>
Cc: Franck Bui-Huu <[e-mail]>
Cc: Frederic Weisbecker <[e-mail]>
Cc: Han Pingtian <[e-mail]>
Cc: Ingo Molnar <[e-mail]>
Cc: Mike Galbraith <[e-mail]>
Cc: Paul Mackerras <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Cc: Stephane Eranian <[e-mail]>
Cc: Tom Zanussi <[e-mail]>
LKML-Reference: <[e-mail]>
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/builtin-record.c

···
 	list_for_each_entry(pos, &evsel_list, node) {
 		if (perf_evsel__alloc_fd(pos, cpus->nr, threads->nr) < 0)
 			goto out_free_fd;
+		if (perf_header__push_event(pos->attr.config, event_name(pos)))
+			goto out_free_fd;
 	}
 	event_array = malloc((sizeof(struct pollfd) * MAX_NR_CPUS *
 			      MAX_COUNTERS * threads->nr));

tools/perf/util/parse-events.c

···
 	return EVT_HANDLED_ALL;
 }
 
-static int store_event_type(const char *orgname)
-{
-	char filename[PATH_MAX], *c;
-	FILE *file;
-	int id, n;
-
-	sprintf(filename, "%s/", debugfs_path);
-	strncat(filename, orgname, strlen(orgname));
-	strcat(filename, "/id");
-
-	c = strchr(filename, ':');
-	if (c)
-		*c = '/';
-
-	file = fopen(filename, "r");
-	if (!file)
-		return 0;
-	n = fscanf(file, "%i", &id);
-	fclose(file);
-	if (n < 1) {
-		pr_err("cannot store event ID\n");
-		return -EINVAL;
-	}
-	return perf_header__push_event(id, orgname);
-}
-
 static enum event_result parse_tracepoint_event(const char **strp,
 				    struct perf_event_attr *attr)
 {
···
 		return parse_multiple_tracepoint_event(sys_name, evt_name,
 						       flags);
 	} else {
-		if (store_event_type(evt_name) < 0)
-			return EVT_FAILED;
-
 		return parse_single_tracepoint_event(sys_name, evt_name,
 						     evt_length, attr, strp);
 	}