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 58056375F86; 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=g15MjqD0+XTdObIab+exdeLMwUnr+KdxwRuLo/Ah3RDXaT35rqNzjVzYJd3784eWwNdLB9eXqIF+NO9Lu2txLJ1ulLCLdS9xU2ZO66cJnqGr5ZfdxG7sQNmnsoe+xObQJtjckze/MVNS6n4TqC/rLkBD3c5Z0aD8aoNhWI+8Wf4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772582346; c=relaxed/simple; bh=nO8CYYfzGFAugMvr1scTvmnivZv8/SWZWUO9Q9xFQD0=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=eN4UFHoFZzbgkW8of+fSikZcD3yNNVPUU6jmOAz2hCn95mt/EMq9X/kK1sDBUV6GsGDCpvd4t2M4bMpc3kCqXJRQj7OGR5iEEsV7Wb8YBk2oj43INMbjuiraiZdzcfEOdKgNZvfydRR9qwF6DuOEUQxxlhmVADzQ7EELyRH5ySU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=kS0prf0E; 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="kS0prf0E" Received: by smtp.kernel.org (Postfix) with ESMTPSA id EC09EC116C6; Tue, 3 Mar 2026 23:59:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772582346; bh=nO8CYYfzGFAugMvr1scTvmnivZv8/SWZWUO9Q9xFQD0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kS0prf0EhFct9ns7RYZarOPWxSWsIZKWs4EcR1aav/zqEpNV0yOHh3Mx1mqDDXaHf 8jFuhe68HyditVMmPqyC+TPAWCeR9R9uXqakDJ1B2HUwfM/OsHA7D5aPK/T1T9MhYN vggBi7g4VLIEayFUWGRdNwhbC6u7CW7qDpAE13vlyEUUwBAMuFLGYgC58DjK6vrioi Qt+eo9qQFwGz71SNgIqyeicI8BiyAPEl/2jVDqy0SLEphlVbO1MWfEyac/cWgIigk3 OVk9v4k/M0ZhmYpP0G5zfMflhSRsiNKDTMbknd6X0aZBqw5xTN3SX2v/rFegegLhzU ZrN4WjUPcghVw== Received: by paulmck-ThinkPad-P17-Gen-1.home (Postfix, from userid 1000) id 9FE71CE0D66; 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 1/4] rcutorture: Update due to x86 not supporting none/voluntary preemption Date: Tue, 3 Mar 2026 15:59:00 -0800 Message-Id: <20260303235903.1967409-1-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: rcu@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 rcutorture scenarios to CONFIG_PREEMPT_LAZY. Signed-off-by: Paul E. McKenney --- tools/testing/selftests/rcutorture/configs/rcu/SRCU-N | 3 ++- tools/testing/selftests/rcutorture/configs/rcu/SRCU-T | 3 ++- tools/testing/selftests/rcutorture/configs/rcu/SRCU-U | 3 ++- tools/testing/selftests/rcutorture/configs/rcu/TASKS02 | 3 ++- tools/testing/selftests/rcutorture/configs/rcu/TINY01 | 3 ++- tools/testing/selftests/rcutorture/configs/rcu/TINY02 | 3 ++- tools/testing/selftests/rcutorture/configs/rcu/TRACE01 | 3 ++- tools/testing/selftests/rcutorture/configs/rcu/TREE04 | 3 ++- tools/testing/selftests/rcutorture/configs/rcu/TREE05 | 3 ++- tools/testing/selftests/rcutorture/configs/rcu/TREE06 | 3 ++- tools/testing/selftests/rcutorture/configs/rcu/TRIVIAL | 3 ++- 11 files changed, 22 insertions(+), 11 deletions(-) diff --git a/tools/testing/selftests/rcutorture/configs/rcu/SRCU-N b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-N index 07f5e0a70ae70..90797c9e9410e 100644 --- a/tools/testing/selftests/rcutorture/configs/rcu/SRCU-N +++ b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-N @@ -2,7 +2,8 @@ CONFIG_RCU_TRACE=n CONFIG_SMP=y CONFIG_NR_CPUS=4 CONFIG_HOTPLUG_CPU=y -CONFIG_PREEMPT_NONE=y +CONFIG_PREEMPT_LAZY=y +CONFIG_PREEMPT_NONE=n CONFIG_PREEMPT_VOLUNTARY=n CONFIG_PREEMPT=n #CHECK#CONFIG_RCU_EXPERT=n diff --git a/tools/testing/selftests/rcutorture/configs/rcu/SRCU-T b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-T index c70cf0405f248..06e4d1030279c 100644 --- a/tools/testing/selftests/rcutorture/configs/rcu/SRCU-T +++ b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-T @@ -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/rcu/SRCU-U b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-U index bc9eeabaa1b18..540fa4ee6b1ba 100644 --- a/tools/testing/selftests/rcutorture/configs/rcu/SRCU-U +++ b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-U @@ -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/rcu/TASKS02 b/tools/testing/selftests/rcutorture/configs/rcu/TASKS02 index 2f9fcffff5ae3..dd2bd4e08da4e 100644 --- a/tools/testing/selftests/rcutorture/configs/rcu/TASKS02 +++ b/tools/testing/selftests/rcutorture/configs/rcu/TASKS02 @@ -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/rcu/TINY01 b/tools/testing/selftests/rcutorture/configs/rcu/TINY01 index bd5ed7b0da5f0..37be5468c9d9f 100644 --- a/tools/testing/selftests/rcutorture/configs/rcu/TINY01 +++ b/tools/testing/selftests/rcutorture/configs/rcu/TINY01 @@ -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/rcu/TINY02 b/tools/testing/selftests/rcutorture/configs/rcu/TINY02 index 30439f6fc20e6..be8860342ef71 100644 --- a/tools/testing/selftests/rcutorture/configs/rcu/TINY02 +++ b/tools/testing/selftests/rcutorture/configs/rcu/TINY02 @@ -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/rcu/TRACE01 b/tools/testing/selftests/rcutorture/configs/rcu/TRACE01 index 18efab346381a..8fb124c28f283 100644 --- a/tools/testing/selftests/rcutorture/configs/rcu/TRACE01 +++ b/tools/testing/selftests/rcutorture/configs/rcu/TRACE01 @@ -1,7 +1,8 @@ CONFIG_SMP=y CONFIG_NR_CPUS=5 CONFIG_HOTPLUG_CPU=y -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/rcu/TREE04 b/tools/testing/selftests/rcutorture/configs/rcu/TREE04 index f49fda1c88811..f9d54ddc73a20 100644 --- a/tools/testing/selftests/rcutorture/configs/rcu/TREE04 +++ b/tools/testing/selftests/rcutorture/configs/rcu/TREE04 @@ -1,7 +1,8 @@ CONFIG_SMP=y CONFIG_NR_CPUS=8 +CONFIG_PREEMPT_LAZY=y CONFIG_PREEMPT_NONE=n -CONFIG_PREEMPT_VOLUNTARY=y +CONFIG_PREEMPT_VOLUNTARY=n CONFIG_PREEMPT=n CONFIG_PREEMPT_DYNAMIC=n CONFIG_PREEMPT_LAZY=n diff --git a/tools/testing/selftests/rcutorture/configs/rcu/TREE05 b/tools/testing/selftests/rcutorture/configs/rcu/TREE05 index 0513aa33c32c4..93a17fe050bd4 100644 --- a/tools/testing/selftests/rcutorture/configs/rcu/TREE05 +++ b/tools/testing/selftests/rcutorture/configs/rcu/TREE05 @@ -1,6 +1,7 @@ CONFIG_SMP=y CONFIG_NR_CPUS=8 -CONFIG_PREEMPT_NONE=y +CONFIG_PREEMPT_LAZY=y +CONFIG_PREEMPT_NONE=n CONFIG_PREEMPT_VOLUNTARY=n CONFIG_PREEMPT=n CONFIG_PREEMPT_LAZY=n diff --git a/tools/testing/selftests/rcutorture/configs/rcu/TREE06 b/tools/testing/selftests/rcutorture/configs/rcu/TREE06 index bfd88c46dbd73..73a8945780abd 100644 --- a/tools/testing/selftests/rcutorture/configs/rcu/TREE06 +++ b/tools/testing/selftests/rcutorture/configs/rcu/TREE06 @@ -1,6 +1,7 @@ CONFIG_SMP=y CONFIG_NR_CPUS=8 -CONFIG_PREEMPT_NONE=y +CONFIG_PREEMPT_LAZY=y +CONFIG_PREEMPT_NONE=n CONFIG_PREEMPT_VOLUNTARY=n CONFIG_PREEMPT=n CONFIG_PREEMPT_LAZY=n diff --git a/tools/testing/selftests/rcutorture/configs/rcu/TRIVIAL b/tools/testing/selftests/rcutorture/configs/rcu/TRIVIAL index 5d546efa68e83..d18cfbd606220 100644 --- a/tools/testing/selftests/rcutorture/configs/rcu/TRIVIAL +++ b/tools/testing/selftests/rcutorture/configs/rcu/TRIVIAL @@ -1,6 +1,7 @@ CONFIG_SMP=y CONFIG_NR_CPUS=8 -CONFIG_PREEMPT_NONE=y +CONFIG_PREEMPT_LAZY=y +CONFIG_PREEMPT_NONE=n CONFIG_PREEMPT_VOLUNTARY=n CONFIG_PREEMPT=n CONFIG_HZ_PERIODIC=n -- 2.40.1