From mboxrd@z Thu Jan 1 00:00:00 1970 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 57FAB375AB8; Tue, 3 Mar 2026 23:59:06 +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=1772582346; cv=none; b=tMwsZNI4I8hokAUbIjOHvBr1b7zfQzkqpET2V7G8W929OM6JndjjxoylzwRLJnZGN4J5jHYHWMrsL2cZk18ooRbFRtWUfB3ODiyMIx4GHLo916yCuUmK6W+IQMLUYUjlHuEHMZM1giYyvGGiG+h//mCEld6PVjZ/eII2mBkc+j4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772582346; c=relaxed/simple; bh=m9Bnjv8EFFWoPUMz39NrZyY+JypAq7XPC013MrJ6Xsw=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=eGNfGf7FbGiNiVjkla6M9xQsq2/ntY9ys0UOYHUvh4/seIzC7yrhKdg69aeBBJOz0R6iQCM+vhZCsxBB7x7qbyudyA1Qqv71sQ4Hnykex1WMpLeELVS/PF+Qq9Ig54WESMZo0nT273qnWQIPM6PgWFNjkkVHWDYlxKDQhj2TF3c= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=gtLD6AHi; 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="gtLD6AHi" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0B3C8C19422; Tue, 3 Mar 2026 23:59:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772582346; bh=m9Bnjv8EFFWoPUMz39NrZyY+JypAq7XPC013MrJ6Xsw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gtLD6AHiJMT8KUxUyeZnQkkUU9VUri9UALjHsD/ybpA/HqyA2Fr28xiLapsCELE8f Hdqwo4q8UYivNAPJrojAa9nqN5tTQhGIlTbZ4/rzzssB0oLKIqXhMhxqcXXDsZqrDW +KkVoj6VWwJN4aBudq+vLH6vFuaYISkrtf3N8E/NgC/NF0MG5gWtn40rSCm45XUPtX SUdBnx0ytGX/lxp7XAVQnSomdPtbZgXJJpYbv/eREAlcedp4o9cYZcWlxYXelENXff qvPoPNfR2hYpNoSrkB5e3X83jBwedsGlL1FfwMwwfX+vwO3Hrbavht7IMgICputtER BkxiezXLVyaTw== Received: by paulmck-ThinkPad-P17-Gen-1.home (Postfix, from userid 1000) id A2D78CE0DFD; Tue, 3 Mar 2026 15:59:05 -0800 (PST) From: "Paul E. McKenney" To: rcu@vger.kernel.org Cc: linux-kernel@vger.kernel.org, kernel-team@meta.com, rostedt@goodmis.org, "Paul E. McKenney" Subject: [PATCH 2/4] rcuscale: Update due to x86 not supporting none/voluntary preemption Date: Tue, 3 Mar 2026 15:59:01 -0800 Message-Id: <20260303235903.1967409-2-paulmck@kernel.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <2011d452-3c72-432a-af77-810238e80e6a@paulmck-laptop> References: <2011d452-3c72-432a-af77-810238e80e6a@paulmck-laptop> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit As of v7.0-rc1, architectures that support preemption, including x86 and arm64, no longer support CONFIG_PREEMPT_NONE or CONFIG_PREEMPT_VOLUNTARY. Attempting to build kernels with these two Kconfig options results in .config errors. This commit therefore switches such rcuscale scenarios to CONFIG_PREEMPT_LAZY. Signed-off-by: Paul E. McKenney --- tools/testing/selftests/rcutorture/configs/rcuscale/TINY | 3 ++- tools/testing/selftests/rcutorture/configs/rcuscale/TRACE01 | 3 ++- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/rcutorture/configs/rcuscale/TINY b/tools/testing/selftests/rcutorture/configs/rcuscale/TINY index 0fa2dc086e10c..c1a7d38823fba 100644 --- a/tools/testing/selftests/rcutorture/configs/rcuscale/TINY +++ b/tools/testing/selftests/rcutorture/configs/rcuscale/TINY @@ -1,5 +1,6 @@ CONFIG_SMP=n -CONFIG_PREEMPT_NONE=y +CONFIG_PREEMPT_LAZY=y +CONFIG_PREEMPT_NONE=n CONFIG_PREEMPT_VOLUNTARY=n CONFIG_PREEMPT=n CONFIG_PREEMPT_DYNAMIC=n diff --git a/tools/testing/selftests/rcutorture/configs/rcuscale/TRACE01 b/tools/testing/selftests/rcutorture/configs/rcuscale/TRACE01 index 0059592c7408a..f3f1368b83869 100644 --- a/tools/testing/selftests/rcutorture/configs/rcuscale/TRACE01 +++ b/tools/testing/selftests/rcutorture/configs/rcuscale/TRACE01 @@ -1,5 +1,6 @@ CONFIG_SMP=y -CONFIG_PREEMPT_NONE=y +CONFIG_PREEMPT_LAZY=y +CONFIG_PREEMPT_NONE=n CONFIG_PREEMPT_VOLUNTARY=n CONFIG_PREEMPT=n CONFIG_PREEMPT_DYNAMIC=n -- 2.40.1