1 files changed, 40 insertions, 10 deletions

diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l
index 2c0d006d43db..f5e28dc68270 100644
--- a/tools/perf/util/parse-events.l
+++ b/tools/perf/util/parse-events.l
@@ -70,6 +70,12 @@ static int term(yyscan_t scanner, int type)
 %}
 
 %x mem
+%s config
+%x event
+
+group		[^,{}/]*[{][^}]*[}][^,{}/]*
+event_pmu	[^,{}/]+[/][^/]*[/][^,{}/]*
+event		[^,{}/]+
 
 num_dec		[0-9]+
 num_hex		0x[a-fA-F0-9]+
@@ -84,7 +90,13 @@ modifier_bp	[rwx]{1,3}
 	{
 		int start_token;
 
-		start_token = (int) parse_events_get_extra(yyscanner);
+		start_token = parse_events_get_extra(yyscanner);
+
+		if (start_token == PE_START_TERMS)
+			BEGIN(config);
+		else if (start_token == PE_START_EVENTS)
+			BEGIN(event);
+
 		if (start_token) {
 			parse_events_set_extra(NULL, yyscanner);
 			return start_token;
@@ -92,6 +104,26 @@ modifier_bp	[rwx]{1,3}
          }
 %}
 
+<event>{
+
+{group}		{
+			BEGIN(INITIAL); yyless(0);
+		}
+
+{event_pmu}	|
+{event}		{
+			str(yyscanner, PE_EVENT_NAME);
+			BEGIN(INITIAL); yyless(0);
+			return PE_EVENT_NAME;
+		}
+
+.		|
+<<EOF>>		{
+			BEGIN(INITIAL); yyless(0);
+		}
+
+}
+
 cpu-cycles|cycles				{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES); }
 stalled-cycles-frontend|idle-cycles-frontend	{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND); }
 stalled-cycles-backend|idle-cycles-backend	{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_BACKEND); }
@@ -127,18 +159,16 @@ speculative-read|speculative-load	|
 refs|Reference|ops|access		|
 misses|miss				{ return str(yyscanner, PE_NAME_CACHE_OP_RESULT); }
 
-	/*
-	 * These are event config hardcoded term names to be specified
-	 * within xxx/.../ syntax. So far we dont clash with other names,
-	 * so we can put them here directly. In case the we have a conflict
-	 * in future, this needs to go into '//' condition block.
-	 */
+<config>{
 config			{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG); }
 config1			{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG1); }
 config2			{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG2); }
 name			{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NAME); }
 period			{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD); }
 branch_type		{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE); }
+,			{ return ','; }
+"/"			{ BEGIN(INITIAL); return '/'; }
+}
 
 mem:			{ BEGIN(mem); return PE_PREFIX_MEM; }
 r{num_raw_hex}		{ return raw(yyscanner); }
@@ -147,11 +177,11 @@ r{num_raw_hex}		{ return raw(yyscanner); }
 
 {modifier_event}	{ return str(yyscanner, PE_MODIFIER_EVENT); }
 {name}			{ return str(yyscanner, PE_NAME); }
-"/"			{ return '/'; }
+"/"			{ BEGIN(config); return '/'; }
 -			{ return '-'; }
-,			{ return ','; }
+,			{ BEGIN(event); return ','; }
 :			{ return ':'; }
-"{"			{ return '{'; }
+"{"			{ BEGIN(event); return '{'; }
 "}"			{ return '}'; }
 =			{ return '='; }
 \n			{ }