From nobody Fri Dec 19 04:32:31 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7C5F125F789; Tue, 8 Apr 2025 00:54:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744073677; cv=none; b=CBNPwt3viGHNCCLDt78ukAeDNGxYQwtreKjs6XOG+SlUCECEA2eFttcqNZPwaWRFh4sLPBOxrQVxWuZzBfV1/RqQFxgSLnXzBr/s6UVqpOszkB23D+hJKKpC4W2mnz3dbya/QCwjqP7QLje5KwTquJ2prymJD+qkN5xaQk3ZbBI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744073677; c=relaxed/simple; bh=y/GqHK7qnooxRLGgJ+6DRAN88StLJHdk9WAbJ/Gk47Y=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=DnTwMS5zlwsRZL6yQJZzvmiiq/0YzsAJI8LqlA2uHlwZu+2ocQO7P2FvbFDGqxH65UvjgmI853zSGIqUnLVtteCF73p4NdRQgfFwzZx6sto557rd1URWLwXPq5oT/OdNMIQJUNpm76s3ry8QFSS7C1KIGzKf4jb+F7gg4lFEjmw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ZDENPvBX; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ZDENPvBX" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 25744C4CEDD; Tue, 8 Apr 2025 00:54:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1744073677; bh=y/GqHK7qnooxRLGgJ+6DRAN88StLJHdk9WAbJ/Gk47Y=; h=From:To:Cc:Subject:Date:From; b=ZDENPvBX5SRgUlk0ibP2efGO2DPHtLfZWoEX/hFG+k44yt4pv2AWzm+XMCB6JLbQH IGs8yiNWCCBDnz+3kaJd6PmyeOkCOXjpMwoAXRikYrGVHnsjJcjo8SsrmCpW27QZ2G MUdBn6acrAtRNMCUqOi6A+90ID3EeMn/zqxFo1jqAPNXQA23Cfeb/jwykw5JjZbUh0 W+XeAWWXXw4HVZnGmkHe++zyUszEmC6+mxclhf74huctH5FG4sE2TGxy9QhgeDw4vJ c+dserEBKd9w7Fd8e0p1jhD0qQQISNsBvE+fkw6hvAhXco89TFB83sN3hnqyYYMH7N zVTTKNtErLfbg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Oleg Nesterov , kernel test robot , Ingo Molnar , Sasha Levin , ojeda@kernel.org, aliceryhl@google.com, akpm@linux-foundation.org, tj@kernel.org, masahiroy@kernel.org, mmaurer@google.com, yoann.congal@smile.fr, jeffxu@chromium.org, roman.gushchin@linux.dev, chenridong@huawei.com, axboe@kernel.dk, jannh@google.com, mark.rutland@arm.com, brgerst@gmail.com, vincent.guittot@linaro.org Subject: [PATCH AUTOSEL 5.10] sched/isolation: Make CONFIG_CPU_ISOLATION depend on CONFIG_SMP Date: Mon, 7 Apr 2025 20:54:30 -0400 Message-Id: <20250408005431.3335006-1-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 5.10.235 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Oleg Nesterov [ Upstream commit 975776841e689dd8ba36df9fa72ac3eca3c2957a ] kernel/sched/isolation.c obviously makes no sense without CONFIG_SMP, but the Kconfig entry we have right now: config CPU_ISOLATION bool "CPU isolation" depends on SMP || COMPILE_TEST allows the creation of pointless .config's which cause build failures. Reported-by: kernel test robot Signed-off-by: Oleg Nesterov Signed-off-by: Ingo Molnar Link: https://lore.kernel.org/r/20250330134955.GA7910@redhat.com Closes: https://lore.kernel.org/oe-kbuild-all/202503260646.lrUqD3j5-lkp@int= el.com/ Signed-off-by: Sasha Levin --- init/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/init/Kconfig b/init/Kconfig index 9807c66b24bb6..d9dd8cbe99b11 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -656,7 +656,7 @@ endmenu # "CPU/Task time and stats accounting" =20 config CPU_ISOLATION bool "CPU isolation" - depends on SMP || COMPILE_TEST + depends on SMP default y help Make sure that CPUs running critical tasks are not disturbed by --=20 2.39.5