+ selftests-mm-report-the-configuration-check-on-stderr.patch added to mm-unstable branch

+ selftests-mm-report-the-configuration-check-on-stderr.patch added to mm-unstable branch

[Andrew Morton]

The patch titled
     Subject: selftests/mm: report the configuration check on stderr
has been added to the -mm mm-unstable branch.  Its filename is
     selftests-mm-report-the-configuration-check-on-stderr.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-mm-report-the-configuration-check-on-stderr.patch

This patch will later appear in the mm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Sasha Levin <sashal@kernel.org>
Subject: selftests/mm: report the configuration check on stderr
Date: Wed, 14 Oct 2026 16:01:37 -0400

The mm Makefile includes local_config.mk, which is generated by a rule
that announces itself with "CHK [config] local_config.mk" on standard
output, which make -s does not suppress. When make has to regenerate the
file while it reads the Makefile for emit_tests, for example on a fresh
tree or when the selftests are installed with make -B, the message
becomes part of the emit_tests output that the selftests install target
appends to kselftest-list.txt, so the runlist gains a line that is not a
test.

Print the message on standard error. With V=1 the message is empty and
only the redirection of an empty command remains.

Link: https://lore.kernel.org/20261014200137.1364121-1-sashal@kernel.org
Fixes: 04cf82a741e0 ("selftests/mm: suppress compiler error in liburing check")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Li Wang <li.wang@linux.dev>
Cc: David Hildenbrand <david@kernel.org>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
---

 tools/testing/selftests/mm/Makefile |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/tools/testing/selftests/mm/Makefile~selftests-mm-report-the-configuration-check-on-stderr
+++ a/tools/testing/selftests/mm/Makefile
@@ -266,7 +266,7 @@ $(OUTPUT)/migration: LDLIBS += -lnuma
 $(OUTPUT)/rmap: LDLIBS += -lnuma
 
 local_config.mk local_config.h_gen: check_config.sh
-	$(call msg,CHK,config,$@)
+	@{ $(patsubst @%,%,$(call msg,CHK,config,$@)) :; } >&2
 	$(Q)CC="$(CC)" CFLAGS="$(CFLAGS)" ./check_config.sh
 
 EXTRA_CLEAN += local_config.mk local_config.h_gen
_

Patches currently in -mm which might be from sashal@kernel.org are

selftests-mm-report-the-configuration-check-on-stderr.patch
selftests-proc-proc-pid-vm-fix-unused-variable-warning-on-non-x86.patch