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Commit 82ba1f2f authored by Jiri Olsa's avatar Jiri Olsa Committed by Arnaldo Carvalho de Melo
Browse files

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: 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/1337584373-2741-3-git-send-email-jolsa@redhat.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent f50246e2

tools/perf/Makefile

+9 −3
Original line number Diff line number Diff line
@@ -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

tools/perf/util/parse-events.c

+6 −0
Original line number Diff line number Diff line
@@ -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);