From: Kevin Brodsky <kevin.brod...@arm.com> [ Upstream commit 46036188ea1f5266df23a6149dea0df1c77cd1c7 ]
The mm kselftests are currently built with no optimisation (-O0). It's unclear why, and besides being obviously suboptimal, this also prevents the pkeys tests from working as intended. Let's build all the tests with -O2. [kevin.brod...@arm.com: silence unused-result warnings] Link: https://lkml.kernel.org/r/20250107170110.2819685-1-kevin.brod...@arm.com Link: https://lkml.kernel.org/r/20241209095019.1732120-6-kevin.brod...@arm.com Signed-off-by: Kevin Brodsky <kevin.brod...@arm.com> Cc: Aruna Ramakrishna <aruna.ramakris...@oracle.com> Cc: Catalin Marinas <catalin.mari...@arm.com> Cc: Dave Hansen <dave.han...@linux.intel.com> Cc: Joey Gouly <joey.go...@arm.com> Cc: Keith Lucas <keith.lu...@oracle.com> Cc: Ryan Roberts <ryan.robe...@arm.com> Cc: Shuah Khan <sh...@kernel.org> Signed-off-by: Andrew Morton <a...@linux-foundation.org> (cherry picked from commit 46036188ea1f5266df23a6149dea0df1c77cd1c7) [Yifei: This commit also fix the failure of pkey_sighandler_tests_64, which is also in linux-6.12.y, thus backport this commit. It is already backported to linux-6.13.y by commit d9eb5a1e76f56] Signed-off-by: Yifei Liu <yifei.l....@oracle.com> --- tools/testing/selftests/mm/Makefile | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/mm/Makefile b/tools/testing/selftests/mm/Makefile index 02e1204971b0..c0138cb19705 100644 --- a/tools/testing/selftests/mm/Makefile +++ b/tools/testing/selftests/mm/Makefile @@ -33,9 +33,16 @@ endif # LDLIBS. MAKEFLAGS += --no-builtin-rules -CFLAGS = -Wall -I $(top_srcdir) $(EXTRA_CFLAGS) $(KHDR_INCLUDES) $(TOOLS_INCLUDES) +CFLAGS = -Wall -O2 -I $(top_srcdir) $(EXTRA_CFLAGS) $(KHDR_INCLUDES) $(TOOLS_INCLUDES) LDLIBS = -lrt -lpthread -lm +# Some distributions (such as Ubuntu) configure GCC so that _FORTIFY_SOURCE is +# automatically enabled at -O1 or above. This triggers various unused-result +# warnings where functions such as read() or write() are called and their +# return value is not checked. Disable _FORTIFY_SOURCE to silence those +# warnings. +CFLAGS += -U_FORTIFY_SOURCE + TEST_GEN_FILES = cow TEST_GEN_FILES += compaction_test TEST_GEN_FILES += gup_longterm -- 2.46.0
