linux-kernel - [PATCH 1/2] kbuild: Let builtin have precedence over modules for kselftest-merge

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Message-Id: <20231004124837.56536-2-bjorn@kernel.org>
Date:   Wed,  4 Oct 2023 14:48:36 +0200
From:   Björn Töpel <bjorn@...nel.org>
To:     linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
        Masahiro Yamada <masahiroy@...nel.org>,
        linux-kbuild@...r.kernel.org, Shuah Khan <shuah@...nel.org>
Cc:     Björn Töpel <bjorn@...osinc.com>,
        bpf@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH 1/2] kbuild: Let builtin have precedence over modules for kselftest-merge

From: Björn Töpel <bjorn@...osinc.com>

The kselftest-merge target walks all kselftests configs, and merges
them. However, builtin does not have precedence over modules. This
breaks some of the tests, e.g.:

$ grep CONFIG_NF_NAT tools/testing/selftests/{bpf,net}/config
tools/testing/selftests/bpf/config:CONFIG_NF_NAT=y
tools/testing/selftests/net/config:CONFIG_NF_NAT=m

Here, the net config will set NF_NAT to module, which makes it clunky
to run the BPF tests.

Add '-y' to scripts/kconfig/merge_config.sh.

Signed-off-by: Björn Töpel <bjorn@...osinc.com>
---
 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 373649c7374e..170fb2f5e378 100644
--- a/Makefile
+++ b/Makefile
@@ -1368,7 +1368,7 @@ PHONY += kselftest-merge
 kselftest-merge:
 	$(if $(wildcard $(objtree)/.config),, $(error No .config exists, config your kernel first!))
 	$(Q)find $(srctree)/tools/testing/selftests -name config | \
-		xargs $(srctree)/scripts/kconfig/merge_config.sh -m $(objtree)/.config
+		xargs $(srctree)/scripts/kconfig/merge_config.sh -y -m $(objtree)/.config
 	$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
 
 # ---------------------------------------------------------------------------
-- 
2.39.2