From: Andrea Arcangeli aarcange@redhat.com
[ Upstream commit 46aa6a302b53f543f8e8b8e1714dc5e449ad36a6 ]
linux/tools/testing/selftests/vm $ make
gcc -Wall -I ../../../../usr/include compaction_test.c -lrt -o /compaction_test /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.4/../../../../x86_64-pc-linux-gnu/bin/ld: cannot open output file /compaction_test: Permission denied collect2: error: ld returned 1 exit status make: *** [../lib.mk:54: /compaction_test] Error 1
Since commit a8ba798bc8ec ("selftests: enable O and KBUILD_OUTPUT") selftests/vm build fails if run from the "selftests/vm" directory, but it works in the selftests/ directory. It's quicker to be able to do a local vm-only build after a tree wipe and this patch allows for it again.
Link: http://lkml.kernel.org/r/20170302173738.18994-4-aarcange@redhat.com Signed-off-by: Andrea Arcangeli aarcange@redhat.com Cc: Mike Rapoport rppt@linux.vnet.ibm.com Cc: "Dr. David Alan Gilbert" dgilbert@redhat.com Cc: Mike Kravetz mike.kravetz@oracle.com Cc: Pavel Emelyanov xemul@parallels.com Cc: Hillf Danton hillf.zj@alibaba-inc.com Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Sasha Levin alexander.levin@verizon.com --- tools/testing/selftests/vm/Makefile | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/tools/testing/selftests/vm/Makefile b/tools/testing/selftests/vm/Makefile index e4bb1de1d526..b5f08e8cab33 100644 --- a/tools/testing/selftests/vm/Makefile +++ b/tools/testing/selftests/vm/Makefile @@ -1,5 +1,9 @@ # Makefile for vm selftests
+ifndef OUTPUT + OUTPUT := $(shell pwd) +endif + CFLAGS = -Wall -I ../../../../usr/include $(EXTRA_CFLAGS) BINARIES = compaction_test BINARIES += hugepage-mmap