Currently, when some of the KSFT subsystems specified in TARGETS fails to build, the toplevel Makefile just keeps carrying on with the build process.

This behaviour is expected and desirable especially in the context of a CI system running KSelfTest where is not always easy to guarantee that the most recent and esoteric toolchain's dependencies are respected across all KSFT TARGETS in a timely manner.

Unfortunately, as of now, this holds true only if the very last of the subsystems listed in TARGETS happened to be one that could be successfully built: if the last listed TARGETS fails, it is taken as the whole outcome of the Makefile target and the complete build/install halts even though many other preceding subsytems were in fact already successfully built.

Fix the KSFT Makefile behaviour related to all/install targets in order to fail as a whole only when the all/install targets have failed for all of the requested TARGETS, while succeeding when at least one of TARGETS has been successfully built.

Signed-off-by: Cristian Marussi cristian.marussi@arm.com --- This patch is based on ksft/fixes branch from:

git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest.git

on top of commit:

ce3a67780212 selftests: watchdog: Add command line option to show watchdog_info --- tools/testing/selftests/Makefile | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile index 4cdbae6f4e61..d907b050e929 100644 --- a/tools/testing/selftests/Makefile +++ b/tools/testing/selftests/Makefile @@ -140,11 +140,13 @@ else endif

all: khdr - @for TARGET in $(TARGETS); do \ - BUILD_TARGET=$$BUILD/$$TARGET; \ - mkdir $$BUILD_TARGET -p; \ - $(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET;\ - done; + @ret=1; \ + for TARGET in $(TARGETS); do \ + BUILD_TARGET=$$BUILD/$$TARGET; \ + mkdir $$BUILD_TARGET -p; \ + $(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET; \ + ret=$$((ret * $$?)); \ + done; exit $$ret;

run_tests: all @for TARGET in $(TARGETS); do \ @@ -192,10 +194,12 @@ ifdef INSTALL_PATH mkdir -p $(INSTALL_PATH)/kselftest install -m 744 kselftest/runner.sh $(INSTALL_PATH)/kselftest/ install -m 744 kselftest/prefix.pl $(INSTALL_PATH)/kselftest/ - @for TARGET in $(TARGETS); do \ + @ret=1; \ + for TARGET in $(TARGETS); do \ BUILD_TARGET=$$BUILD/$$TARGET; \ $(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET INSTALL_PATH=$(INSTALL_PATH)/$$TARGET install; \ - done; + ret=$$((ret * $$?)); \ + done; exit $$ret

@# Ask all targets to emit their test scripts echo "#!/bin/sh" > $(ALL_SCRIPT)