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authorJiri Olsa <jolsa@redhat.com>2012-05-21 09:12:52 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2012-05-22 11:24:04 -0300
commit08d2f762ac4af861b962e543fceab341f05c8886 (patch)
tree6a4ddd3c8c8383ee9d0ba7d048aaa6c3d301307f /tools/perf/util/parse-events.l
parentb847cbdc6750bdea248ace75c1868f8ef57dcdf0 (diff)
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 <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/1337584373-2741-5-git-send-email-jolsa@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/parse-events.l')
-rw-r--r--tools/perf/util/parse-events.l25
1 files changed, 23 insertions, 2 deletions
diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l
index 1fcf1bbc5458..331d28a08dcb 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 <errno.h>
@@ -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 '='; }
+<mem>{
+{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 <mem>
+ * 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.
+ */
+<<EOF>> { BEGIN(INITIAL); }
+}
+
%%
int parse_events_wrap(void)