linux-kernel - [PATCH] selftests: use "$(MAKE)" instead of "make" for headers

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Date:   Mon, 17 Aug 2020 17:09:46 +0200
From:   Denys Vlasenko <dvlasenk@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     Denys Vlasenko <dvlasenk@...hat.com>,
        Shuah Khan <shuah@...nel.org>,
        Shuah Khan <skhan@...uxfoundation.org>,
        linux-kselftest@...r.kernel.org
Subject: [PATCH] selftests: use "$(MAKE)" instead of "make" for headers_install

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@...nel.org>
CC: Shuah Khan <skhan@...uxfoundation.org>
CC: linux-kselftest@...r.kernel.org
CC: linux-kernel@...r.kernel.org
Signed-off-by: Denys Vlasenko <dvlasenk@...hat.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
-- 
2.25.0