On 8/17/20 9:09 AM, Denys Vlasenko wrote:

If top make invocation uses -j4 or larger, this patch reduces "make headers_install" subtask run time from 30 to 7 seconds.

CC: Shuah Khan shuah@kernel.org CC: Shuah Khan skhan@linuxfoundation.org CC: linux-kselftest@vger.kernel.org CC: linux-kernel@vger.kernel.org Signed-off-by: Denys Vlasenko dvlasenk@redhat.com

---

tools/testing/selftests/lib.mk | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk index 7a17ea815736..51124b962d56 100644 --- a/tools/testing/selftests/lib.mk +++ b/tools/testing/selftests/lib.mk @@ -47,9 +47,9 @@ ARCH ?= $(SUBARCH) khdr: ifndef KSFT_KHDR_INSTALL_DONE ifeq (1,$(DEFAULT_INSTALL_HDR_PATH))

• make --no-builtin-rules ARCH=$(ARCH) -C $(top_srcdir) headers_install

• $(MAKE) --no-builtin-rules ARCH=$(ARCH) -C $(top_srcdir) headers_install else

• make --no-builtin-rules INSTALL_HDR_PATH=$$OUTPUT/usr \

• $(MAKE) --no-builtin-rules INSTALL_HDR_PATH=$$OUTPUT/usr \ ARCH=$(ARCH) -C $(top_srcdir) headers_install endif endif

Thanks for the patch. Applied to linux-kselftest next for 5.10

thanks, -- Shuah