Perf: Extend named-pmu grammar

This patch allows "-" in a PMU name and
prints it along with counter output.

Previously, perf would just show "pmu" which can
get confusing for the user.

Change-Id: Ib4fb0fa67c1d5f2e15de6e1cb9c35964449d8ad8
Signed-off-by: Ashwin Chaugule <ashwinc@codeaurora.org>

tools/perf/util/parse-events.c

@@ -700,7 +700,7 @@ int parse_events_add_pmu(struct list_head *list, int *idx,
 	if (perf_pmu__config(pmu, &attr, head_config))
 		return -EINVAL;
 
-	return add_event(list, idx, &attr, (char *) "pmu");
+	return add_event(list, idx, &attr, pmu->name);
 }
 
 void parse_events_update_lists(struct list_head *list_event,

tools/perf/util/parse-events.l

@@ -64,7 +64,7 @@ static int term(int type)
 num_dec		[0-9]+
 num_hex		0x[a-fA-F0-9]+
 num_raw_hex	[a-fA-F0-9]+
-name		[a-zA-Z_*?][a-zA-Z0-9_*?]*
+name		[a-zA-Z_*?][a-zA-Z\-0-9_*?]*
 modifier_event	[ukhpGH]{1,8}
 modifier_bp	[rwx]