From 08d2f762ac4af861b962e543fceab341f05c8886 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Mon, 21 May 2012 09:12:52 +0200 Subject: [PATCH] perf tools: Separate 'mem:' event scanner bits Separating 'mem:' scanner processing, so we can parse out modifier specifically and dont clash with other rules. This is just precaution for the future, so we dont need to worry about the rules clashing where we need to parse out any sub-rule of global rules. Signed-off-by: Jiri Olsa Cc: Corey Ashford Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1337584373-2741-5-git-send-email-jolsa@redhat.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/parse-events.c | 1 + tools/perf/util/parse-events.l | 25 +++++++++++++++++++++++-- 2 files changed, 24 insertions(+), 2 deletions(-) diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index 4025e18765c..59324e7b3d8 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -787,6 +787,7 @@ int parse_events(struct perf_evlist *evlist, const char *str, int unset __used) parse_events__flush_buffer(buffer); parse_events__delete_buffer(buffer); + parse_events_lex_destroy(); if (!ret) { int entries = idx - evlist->nr_entries; diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l index 1fcf1bbc545..331d28a08dc 100644 --- a/tools/perf/util/parse-events.l +++ b/tools/perf/util/parse-events.l @@ -1,5 +1,6 @@ %option prefix="parse_events_" +%option stack %{ #include @@ -50,6 +51,8 @@ static int term(int type) %} +%x mem + num_dec [0-9]+ num_hex 0x[a-fA-F0-9]+ num_raw_hex [a-fA-F0-9]+ @@ -105,13 +108,12 @@ config2 { return term(PARSE_EVENTS__TERM_TYPE_CONFIG2); } period { return term(PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD); } branch_type { return term(PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE); } -mem: { return PE_PREFIX_MEM; } +mem: { BEGIN(mem); return PE_PREFIX_MEM; } r{num_raw_hex} { return raw(); } {num_dec} { return value(10); } {num_hex} { return value(16); } {modifier_event} { return str(PE_MODIFIER_EVENT); } -{modifier_bp} { return str(PE_MODIFIER_BP); } {name} { return str(PE_NAME); } "/" { return '/'; } - { return '-'; } @@ -119,6 +121,25 @@ r{num_raw_hex} { return raw(); } : { return ':'; } = { return '='; } +{ +{modifier_bp} { return str(PE_MODIFIER_BP); } +: { return ':'; } +{num_dec} { return value(10); } +{num_hex} { return value(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 + * state we need to put the escaping char back, so we dont miss it. + */ +. { unput(*parse_events_text); BEGIN(INITIAL); } + /* + * We destroy the scanner after reaching EOF, + * but anyway just to be sure get back to INIT state. + */ +<> { BEGIN(INITIAL); } +} + %% int parse_events_wrap(void) -- 2.20.1