[PATCH v4 3/3] perf parse-events: add bison --file-prefix-map option

From: Denys Zagorui
Date: Fri Apr 30 2021 - 09:33:55 EST


bison stores full paths in generated files and those paths are stored in
resulting perf binary. Starting from v3.7.1. those paths can be remapped
by using --file-prefix-map option. So use this option if it possible to
make perf binary more reproducible.

Signed-off-by: Denys Zagorui <dzagorui@xxxxxxxxx>
---
tools/perf/Makefile.config | 9 +++++++++
tools/perf/util/Build | 6 +++---
2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index d8e59d31399a..2035bae6d5c5 100644
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -195,6 +195,12 @@ ifeq ($(call get-executable,$(BISON)),)
dummy := $(error Error: $(BISON) is missing on this system, please install it)
endif

+ifneq ($(OUTPUT),)
+ ifeq ($(shell expr $(shell $(BISON) --version | grep bison | sed -e 's/.\+ \([0-9]\+\).\([0-9]\+\).\([0-9]\+\)/\1\2\3/g') \>\= 371), 1)
+ BISON_FILE_PREFIX_MAP := --file-prefix-map=$(OUTPUT)=
+ endif
+endif
+
# Treat warnings as errors unless directed not to
ifneq ($(WERROR),0)
CORE_CFLAGS += -Werror
@@ -1208,3 +1214,6 @@ $(call detected_var,LIBDIR)
$(call detected_var,GTK_CFLAGS)
$(call detected_var,PERL_EMBED_CCOPTS)
$(call detected_var,PYTHON_EMBED_CCOPTS)
+ifneq ($(BISON_FILE_PREFIX_MAP),)
+$(call detected_var,BISON_FILE_PREFIX_MAP)
+endif
diff --git a/tools/perf/util/Build b/tools/perf/util/Build
index e3e12f9d4733..33476b1d28d5 100644
--- a/tools/perf/util/Build
+++ b/tools/perf/util/Build
@@ -204,7 +204,7 @@ $(OUTPUT)util/parse-events-flex.c $(OUTPUT)util/parse-events-flex.h: util/parse-

$(OUTPUT)util/parse-events-bison.c $(OUTPUT)util/parse-events-bison.h: util/parse-events.y
$(call rule_mkdir)
- $(Q)$(call echo-cmd,bison)$(BISON) -v $< -d $(PARSER_DEBUG_BISON) \
+ $(Q)$(call echo-cmd,bison)$(BISON) -v $< -d $(PARSER_DEBUG_BISON) $(BISON_FILE_PREFIX_MAP) \
-o $(OUTPUT)util/parse-events-bison.c -p parse_events_

$(OUTPUT)util/expr-flex.c $(OUTPUT)util/expr-flex.h: util/expr.l $(OUTPUT)util/expr-bison.c
@@ -214,7 +214,7 @@ $(OUTPUT)util/expr-flex.c $(OUTPUT)util/expr-flex.h: util/expr.l $(OUTPUT)util/e

$(OUTPUT)util/expr-bison.c $(OUTPUT)util/expr-bison.h: util/expr.y
$(call rule_mkdir)
- $(Q)$(call echo-cmd,bison)$(BISON) -v $< -d $(PARSER_DEBUG_BISON) \
+ $(Q)$(call echo-cmd,bison)$(BISON) -v $< -d $(PARSER_DEBUG_BISON) $(BISON_FILE_PREFIX_MAP) \
-o $(OUTPUT)util/expr-bison.c -p expr_

$(OUTPUT)util/pmu-flex.c $(OUTPUT)util/pmu-flex.h: util/pmu.l $(OUTPUT)util/pmu-bison.c
@@ -224,7 +224,7 @@ $(OUTPUT)util/pmu-flex.c $(OUTPUT)util/pmu-flex.h: util/pmu.l $(OUTPUT)util/pmu-

$(OUTPUT)util/pmu-bison.c $(OUTPUT)util/pmu-bison.h: util/pmu.y
$(call rule_mkdir)
- $(Q)$(call echo-cmd,bison)$(BISON) -v $< -d $(PARSER_DEBUG_BISON) \
+ $(Q)$(call echo-cmd,bison)$(BISON) -v $< -d $(PARSER_DEBUG_BISON) $(BISON_FILE_PREFIX_MAP) \
-o $(OUTPUT)util/pmu-bison.c -p perf_pmu_

FLEX_GE_26 := $(shell expr $(shell $(FLEX) --version | sed -e 's/flex \([0-9]\+\).\([0-9]\+\)/\1\2/g') \>\= 26)
--
2.26.2.Cisco