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Commit 82004223 authored by Jiri Olsa's avatar Jiri Olsa Committed by Arnaldo Carvalho de Melo
Browse files

perf tools: Move start conditions to start of the flex file 



Moving start conditions to start of the flex file so it's clear what the
INITIAL condition rules are.

Plus adding default rule for INITIAL condition. This prevents default
space to be printed for events like:

$ ./perf stat -e "cycles        " kill 2>/dev/null
        $
^^^^^^^^

Signed-off-by: default avatarJiri Olsa <jolsa@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1380299398-10839-1-git-send-email-jolsa@redhat.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent e2137086

tools/perf/util/parse-events.l

+32 −31
Original line number Diff line number Diff line
@@ -126,6 +126,37 @@ modifier_bp [rwx]{1,3} 


}



<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 '/'; }

{name_minus}		{ return str(yyscanner, PE_NAME); }

}



<mem>{

{modifier_bp}		{ return str(yyscanner, PE_MODIFIER_BP); }

:			{ return ':'; }

{num_dec}		{ return value(yyscanner, 10); }

{num_hex}		{ return value(yyscanner, 16); }

	/*

	 * We need to separate 'mem:' scanner part, in order to get specific

	 * modifier bits parsed out. Otherwise we would need to handle PE_NAME

	 * and we'd need to parse it manually. During the escape from <mem>

	 * state we need to put the escaping char back, so we dont miss it.

	 */

.			{ unput(*yytext); BEGIN(INITIAL); }

	/*

	 * We destroy the scanner after reaching EOF,

	 * but anyway just to be sure get back to INIT state.

	 */

<<EOF>>			{ BEGIN(INITIAL); }

}



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); }
@@ -162,18 +193,6 @@ speculative-read|speculative-load | 
refs|Reference|ops|access		|

misses|miss				{ return str(yyscanner, PE_NAME_CACHE_OP_RESULT); }



<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 '/'; }

{name_minus}		{ return str(yyscanner, PE_NAME); }

}



mem:			{ BEGIN(mem); return PE_PREFIX_MEM; }

r{num_raw_hex}		{ return raw(yyscanner); }

{num_dec}		{ return value(yyscanner, 10); }
@@ -189,25 +208,7 @@ r{num_raw_hex} { return raw(yyscanner); } 
"}"			{ return '}'; }

=			{ return '='; }

\n			{ }



<mem>{

{modifier_bp}		{ return str(yyscanner, PE_MODIFIER_BP); }

:			{ return ':'; }

{num_dec}		{ return value(yyscanner, 10); }

{num_hex}		{ return value(yyscanner, 16); }

	/*

	 * We need to separate 'mem:' scanner part, in order to get specific

	 * modifier bits parsed out. Otherwise we would need to handle PE_NAME

	 * and we'd need to parse it manually. During the escape from <mem>

	 * state we need to put the escaping char back, so we dont miss it.

	 */

.			{ unput(*yytext); BEGIN(INITIAL); }

	/*

	 * We destroy the scanner after reaching EOF,

	 * but anyway just to be sure get back to INIT state.

	 */

<<EOF>>			{ BEGIN(INITIAL); }

}

.			{ }



%%