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authorJiri Olsa <jolsa@redhat.com>2012-05-21 09:12:50 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2012-05-22 11:21:17 -0300
commit82ba1f2f614871b388cb1bd58594507b6f0f2b79 (patch)
tree27947bb93455777ebc75f14afc1f2f1b97d3186e /tools
parentf50246e2e2e33aacc68ac3ec41cf2d6a08860bc4 (diff)
perf tools: Add support for displaying event parser debug info
Adding PARSER_DEBUG Makefile variable to enable building event scanner/ parser with debug enabled. This results in verbose output right out of the scanner/parser. It's useful for debuging the event parser. Keeping this only for event parser so far. 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/1337584373-2741-3-git-send-email-jolsa@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/Makefile12
-rw-r--r--tools/perf/util/parse-events.c6
2 files changed, 15 insertions, 3 deletions
diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 91840e17181..b24623645ef 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -83,7 +83,13 @@ ifndef PERF_DEBUG
CFLAGS_OPTIMIZE = -O6
endif
-CFLAGS = -fno-omit-frame-pointer -ggdb3 -Wall -Wextra -std=gnu99 $(CFLAGS_WERROR) $(CFLAGS_OPTIMIZE) -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS) $(EXTRA_CFLAGS)
+ifdef PARSER_DEBUG
+ PARSER_DEBUG_BISON := -t
+ PARSER_DEBUG_FLEX := -d
+ PARSER_DEBUG_CFLAGS := -DPARSER_DEBUG
+endif
+
+CFLAGS = -fno-omit-frame-pointer -ggdb3 -Wall -Wextra -std=gnu99 $(CFLAGS_WERROR) $(CFLAGS_OPTIMIZE) -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS) $(EXTRA_CFLAGS) $(PARSER_DEBUG_CFLAGS)
EXTLIBS = -lpthread -lrt -lelf -lm
ALL_CFLAGS = $(CFLAGS) -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE
ALL_LDFLAGS = $(LDFLAGS)
@@ -216,10 +222,10 @@ FLEX = flex
BISON= bison
$(OUTPUT)util/parse-events-flex.c: util/parse-events.l
- $(QUIET_FLEX)$(FLEX) --header-file=$(OUTPUT)util/parse-events-flex.h -t util/parse-events.l > $(OUTPUT)util/parse-events-flex.c
+ $(QUIET_FLEX)$(FLEX) --header-file=$(OUTPUT)util/parse-events-flex.h $(PARSER_DEBUG_FLEX) -t util/parse-events.l > $(OUTPUT)util/parse-events-flex.c
$(OUTPUT)util/parse-events-bison.c: util/parse-events.y
- $(QUIET_BISON)$(BISON) -v util/parse-events.y -d -o $(OUTPUT)util/parse-events-bison.c
+ $(QUIET_BISON)$(BISON) -v util/parse-events.y -d $(PARSER_DEBUG_BISON) -o $(OUTPUT)util/parse-events-bison.c
$(OUTPUT)util/pmu-flex.c: util/pmu.l
$(QUIET_FLEX)$(FLEX) --header-file=$(OUTPUT)util/pmu-flex.h -t util/pmu.l > $(OUTPUT)util/pmu-flex.c
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index c7fc18a33d5..6704978736c 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -23,6 +23,9 @@ struct event_symbol {
const char *alias;
};
+#ifdef PARSER_DEBUG
+extern int parse_events_debug;
+#endif
int parse_events_parse(struct list_head *list, struct list_head *list_tmp,
int *idx);
@@ -768,6 +771,9 @@ int parse_events(struct perf_evlist *evlist, const char *str, int unset __used)
buffer = parse_events__scan_string(str);
+#ifdef PARSER_DEBUG
+ parse_events_debug = 1;
+#endif
ret = parse_events_parse(&list, &list_tmp, &idx);
parse_events__flush_buffer(buffer);