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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>
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2 changed files with 15 additions and 3 deletions
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@ -83,7 +83,13 @@ ifndef PERF_DEBUG
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CFLAGS_OPTIMIZE = -O6
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endif
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CFLAGS = -fno-omit-frame-pointer -ggdb3 -Wall -Wextra -std=gnu99 $(CFLAGS_WERROR) $(CFLAGS_OPTIMIZE) -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS) $(EXTRA_CFLAGS)
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ifdef PARSER_DEBUG
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PARSER_DEBUG_BISON := -t
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PARSER_DEBUG_FLEX := -d
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PARSER_DEBUG_CFLAGS := -DPARSER_DEBUG
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endif
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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)
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EXTLIBS = -lpthread -lrt -lelf -lm
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ALL_CFLAGS = $(CFLAGS) -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE
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ALL_LDFLAGS = $(LDFLAGS)
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@ -216,10 +222,10 @@ FLEX = flex
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BISON= bison
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$(OUTPUT)util/parse-events-flex.c: util/parse-events.l
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$(QUIET_FLEX)$(FLEX) --header-file=$(OUTPUT)util/parse-events-flex.h -t util/parse-events.l > $(OUTPUT)util/parse-events-flex.c
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$(QUIET_FLEX)$(FLEX) --header-file=$(OUTPUT)util/parse-events-flex.h $(PARSER_DEBUG_FLEX) -t util/parse-events.l > $(OUTPUT)util/parse-events-flex.c
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$(OUTPUT)util/parse-events-bison.c: util/parse-events.y
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$(QUIET_BISON)$(BISON) -v util/parse-events.y -d -o $(OUTPUT)util/parse-events-bison.c
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$(QUIET_BISON)$(BISON) -v util/parse-events.y -d $(PARSER_DEBUG_BISON) -o $(OUTPUT)util/parse-events-bison.c
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$(OUTPUT)util/pmu-flex.c: util/pmu.l
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$(QUIET_FLEX)$(FLEX) --header-file=$(OUTPUT)util/pmu-flex.h -t util/pmu.l > $(OUTPUT)util/pmu-flex.c
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@ -23,6 +23,9 @@ struct event_symbol {
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const char *alias;
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};
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#ifdef PARSER_DEBUG
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extern int parse_events_debug;
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#endif
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int parse_events_parse(struct list_head *list, struct list_head *list_tmp,
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int *idx);
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@ -768,6 +771,9 @@ int parse_events(struct perf_evlist *evlist, const char *str, int unset __used)
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buffer = parse_events__scan_string(str);
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#ifdef PARSER_DEBUG
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parse_events_debug = 1;
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#endif
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ret = parse_events_parse(&list, &list_tmp, &idx);
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parse_events__flush_buffer(buffer);
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