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perf build: Use feature dump file for build-test 

To prevent the feature check tests to run repeately, one time per
'tests/make' target/test, this patch utilizes the previously introduced
'feature-dump' make target and FEATURES_DUMP variable, making sure that
the feature checkers run only once when doing build-test for normal test
cases.

However, since standard users doesn't reuse features dump result, we'd
better give an option to check their behaviors. The above feature
should be used to make build-test faster only. Only utilize it for
build-test.

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/1454068269-235999-1-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Wang Nan 2016-01-29 11:51:09 +00:00 committed by Arnaldo Carvalho de Melo
parent 5a155bb77a
commit 79191c89a0
2 changed files with 34 additions and 1 deletions
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2
tools/perf/Makefile
View File

@ -78,7 +78,7 @@ clean:
# The build-test target is not really parallel, don't print the jobs info:
#
build-test:
@$(MAKE) SHUF=1 -f tests/make --no-print-directory
@$(MAKE) SHUF=1 -f tests/make REUSE_FEATURES_DUMP=1 --no-print-directory
#
# All other targets get passed through:

33
tools/perf/tests/make
View File

@ -15,6 +15,7 @@ else
PERF := .
PERF_O := $(PERF)
O_OPT :=
FULL_O := $(shell readlink -f $(PERF_O) || echo $(PERF_O))
ifneq ($(O),)
FULL_O := $(shell readlink -f $(O) || echo $(O))
@ -313,11 +314,43 @@ make_kernelsrc_tools:
(make -C ../../tools $(PARALLEL_OPT) $(K_O_OPT) perf) > $@ 2>&1 && \
test -x $(KERNEL_O)/tools/perf/perf && rm -f $@ || (cat $@ ; false)
FEATURES_DUMP_FILE := $(FULL_O)/BUILD_TEST_FEATURE_DUMP
FEATURES_DUMP_FILE_STATIC := $(FULL_O)/BUILD_TEST_FEATURE_DUMP_STATIC
all: $(run) $(run_O) tarpkg make_kernelsrc make_kernelsrc_tools
@echo OK
@rm -f $(FEATURES_DUMP_FILE) $(FEATURES_DUMP_FILE_STATIC)
out: $(run_O)
@echo OK
@rm -f $(FEATURES_DUMP_FILE) $(FEATURES_DUMP_FILE_STATIC)
ifeq ($(REUSE_FEATURES_DUMP),1)
$(FEATURES_DUMP_FILE):
$(call clean)
@cmd="cd $(PERF) && make FEATURE_DUMP_COPY=$@ $(O_OPT) feature-dump"; \
echo "- $@: $$cmd" && echo $$cmd && \
( eval $$cmd ) > /dev/null 2>&1
$(FEATURES_DUMP_FILE_STATIC):
$(call clean)
@cmd="cd $(PERF) && make FEATURE_DUMP_COPY=$@ $(O_OPT) LDFLAGS='-static' feature-dump"; \
echo "- $@: $$cmd" && echo $$cmd && \
( eval $$cmd ) > /dev/null 2>&1
# Add feature dump dependency for run/run_O targets
$(foreach t,$(run) $(run_O),$(eval \
$(t): $(if $(findstring make_static,$(t)),\
$(FEATURES_DUMP_FILE_STATIC),\
$(FEATURES_DUMP_FILE))))
# Append 'FEATURES_DUMP=' option to all test cases. For example:
# make_no_libbpf: NO_LIBBPF=1 --> NO_LIBBPF=1 FEATURES_DUMP=/a/b/BUILD_TEST_FEATURE_DUMP
# make_static: LDFLAGS=-static --> LDFLAGS=-static FEATURES_DUMP=/a/b/BUILD_TEST_FEATURE_DUMP_STATIC
$(foreach t,$(run),$(if $(findstring make_static,$(t)),\
$(eval $(t) := $($(t)) FEATURES_DUMP=$(FEATURES_DUMP_FILE_STATIC)),\
$(eval $(t) := $($(t)) FEATURES_DUMP=$(FEATURES_DUMP_FILE))))
endif
.PHONY: all $(run) $(run_O) tarpkg clean make_kernelsrc make_kernelsrc_tools
endif # ifndef MK