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authorJiri Olsa <jolsa@redhat.com>2013-09-27 18:29:58 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2013-10-11 12:17:31 -0300
commit820042233bd3c1b24b5ca4c75a88a4e0de39814a (patch)
tree175940422651240d2aaae8a761507191f48b32b5
parente2137086be7bc52893a790292635cfafc475b693 (diff)
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: Jiri 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: Arnaldo Carvalho de Melo <acme@redhat.com>
-rw-r--r--tools/perf/util/parse-events.l63
1 files changed, 32 insertions, 31 deletions
diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l
index 91346b75396..343299575b3 100644
--- a/tools/perf/util/parse-events.l
+++ b/tools/perf/util/parse-events.l
@@ -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); }
-}
+. { }
%%