[PATCH 1/9] perf build: Set parallel making options build-test

Wang Nan
2016-01-13T12:18:01Z

'make build-test' is painful because of time consuming. In a full test,
all test cases are built twice with tools/perf/Makefile and
tools/perf/Makefile.perf. 'Makefile' automatically computes parallel
options for make, but 'Makefile.perf' not, so all test cases is built
with one job. It is very slow.

This patch adds '-j' options to Makefile.perf testing. It computes
parallel building options like what tools/perf/Makefile does, and pass
'-j' option to Makefile.perf test.

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
---
tools/perf/tests/make | 23 ++++++++++++++++-------
1 file changed, 16 insertions(+), 7 deletions(-)

diff --git a/tools/perf/tests/make b/tools/perf/tests/make
index df38dec..c0ee679 100644
--- a/tools/perf/tests/make
+++ b/tools/perf/tests/make
@@ -5,7 +5,7 @@ ifeq ($(MAKECMDGOALS),)
# no target specified, trigger the whole suite
all:
@echo "Testing Makefile"; $(MAKE) -sf tests/make MK=Makefile
- @echo "Testing Makefile.perf"; $(MAKE) -sf tests/make MK=Makefile.perf
+ @echo "Testing Makefile.perf"; $(MAKE) -sf tests/make MK=Makefile.perf SET_PARALLEL=1
else
# run only specific test over 'Makefile'
%:
@@ -14,6 +14,15 @@ endif
else
PERF := .

+PARALLEL_OPT=
+ifeq ($(SET_PARALLEL),1)
+ cores := $(shell (getconf _NPROCESSORS_ONLN || egrep -c '^processor|^CPU[0-9]' /proc/cpuinfo) 2>/dev/null)
+ ifeq ($(cores),0)
+ cores := 1
+ endif
+ PARALLEL_OPT="-j$(cores)"
+endif
+
# As per kernel Makefile, avoid funny character set dependencies
unexport LC_ALL
LC_COLLATE=C
@@ -252,7 +261,7 @@ clean := @(cd $(PERF); make -s -f $(MK) clean >/dev/null)
$(run):
$(call clean)
@TMP_DEST=$$(mktemp -d); \
- cmd="cd $(PERF) && make -f $(MK) DESTDIR=$$TMP_DEST $($@)"; \
+ cmd="cd $(PERF) && make -f $(MK) $(PARALLEL_OPT) DESTDIR=$$TMP_DEST $($@)"; \
echo "- $@: $$cmd" && echo $$cmd > $@ && \
( eval $$cmd ) >> $@ 2>&1; \
echo " test: $(call test,$@)" >> $@ 2>&1; \
@@ -263,7 +272,7 @@ $(run_O):
$(call clean)
@TMP_O=$$(mktemp -d); \
TMP_DEST=$$(mktemp -d); \
- cmd="cd $(PERF) && make -f $(MK) O=$$TMP_O DESTDIR=$$TMP_DEST $($(patsubst %_O,%,$@))"; \
+ cmd="cd $(PERF) && make -f $(MK) $(PARALLEL_OPT) O=$$TMP_O DESTDIR=$$TMP_DEST $($(patsubst %_O,%,$@))"; \
echo "- $@: $$cmd" && echo $$cmd > $@ && \
( eval $$cmd ) >> $@ 2>&1 && \
echo " test: $(call test_O,$@)" >> $@ 2>&1; \
@@ -277,15 +286,15 @@ tarpkg:
rm -f $@

make_kernelsrc:
- @echo "- make -C <kernelsrc> tools/perf"
+ @echo "- make -C <kernelsrc> $(PARALLEL_OPT) tools/perf"
$(call clean); \
- (make -C ../.. tools/perf) > $@ 2>&1 && \
+ (make -C ../.. $(PARALLEL_OPT) tools/perf) > $@ 2>&1 && \
test -x perf && rm -f $@ || (cat $@ ; false)

make_kernelsrc_tools:
- @echo "- make -C <kernelsrc>/tools perf"
+ @echo "- make -C <kernelsrc>/tools $(PARALLEL_OPT) perf"
$(call clean); \
- (make -C ../../tools perf) > $@ 2>&1 && \
+ (make -C ../../tools $(PARALLEL_OPT) perf) > $@ 2>&1 && \
test -x perf && rm -f $@ || (cat $@ ; false)

all: $(run) $(run_O) tarpkg make_kernelsrc make_kernelsrc_tools
--
1.8.3.4