linux-kernel - [PATCH 9/9] perf build: Use feature dump file for build-test

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Message-ID: <1452687442-6186-10-git-send-email-wangnan0@huawei.com>
Date:	Wed, 13 Jan 2016 12:17:22 +0000
From:	Wang Nan <wangnan0@...wei.com>
To:	<acme@...nel.org>, <jolsa@...hat.com>
CC:	<linux-kernel@...r.kernel.org>, <pi3orama@....com>,
	<lizefan@...wei.com>, Wang Nan <wangnan0@...wei.com>,
	Jiri Olsa <jolsa@...nel.org>,
	"Arnaldo Carvalho de Melo" <acme@...hat.com>,
	Namhyung Kim <namhyung@...nel.org>
Subject: [PATCH 9/9] perf build: Use feature dump file for build-test

To prevent feature check run too many times, this patch utilizes
previous introduced feature-dump make target and FEATURES_DUMP
variable, makes sure the feature checkers run only once when doing
build-test for normal test cases.

Signed-off-by: Wang Nan <wangnan0@...wei.com>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Namhyung Kim <namhyung@...nel.org>
---
 tools/perf/tests/make | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/tools/perf/tests/make b/tools/perf/tests/make
index 336a6a6..10493ab 100644
--- a/tools/perf/tests/make
+++ b/tools/perf/tests/make
@@ -15,6 +15,7 @@ else
 PERF := .
 PERF_OUT := $(PERF)
 O_OPT :=
+FULL_O := $(shell readlink -f $(PERF_OUT) || echo $(PERF_OUT))
 
 ifneq ($(O),)
   FULL_O := $(shell readlink -f $(O) || echo $(O))
@@ -319,5 +320,29 @@ all: $(run) $(run_O) tarpkg make_kernelsrc make_kernelsrc_tools
 out: $(run_O)
 	@echo OK
 
+FEATURES_DUMP_FILE := $(FULL_O)/BUILD_TEST_FEATURE_DUMP
+FEATURES_DUMP_FILE_STATIC := $(FULL_O)/BUILD_TEST_FEATURE_DUMP_STATIC
+
+$(FEATURES_DUMP_FILE):
+	$(call clean)
+	@cmd="cd $(PERF) && make FEATURE_DUMP_COPY=$@ $(O_OPT) feature-dump"; \
+	echo "- $@: $$cmd" && echo $$cmd && \
+	( eval $$cmd ) 2>&1
+
+$(FEATURES_DUMP_FILE_STATIC):
+	$(call clean)
+	@cmd="cd $(PERF) && make FEATURE_DUMP_COPY=$@ $(O_OPT) LDFLAGS='-static' feature-dump"; \
+	echo "- $@: $$cmd" && echo $$cmd && \
+	( eval $$cmd ) 2>&1
+
+$(foreach t,$(run) $(run_O),$(eval \
+	$(t): $(if $(findstring make_static,$(t)),\
+		$(FEATURES_DUMP_FILE_STATIC),\
+		$(FEATURES_DUMP_FILE))))
+
+$(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))))
+
 .PHONY: all $(run) $(run_O) tarpkg clean make_kernelsrc make_kernelsrc_tools
 endif # ifndef MK
-- 
1.8.3.4