From nobody Thu Oct 2 10:55:25 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 28B1E2F547D; Thu, 18 Sep 2025 10:29:55 +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=1758191395; cv=none; b=MmdpVWiALG60/KnIIxIs/1DxrhboLylFMMoYtdYCdStb9XcNq58X5Qp2KW7OZ/VTSaFFL9chXAWxc3WE0tea7Qpob5mddfUhg9XO1tUfC3las0XLMPb78eGPMJOnxeqRtFPZxH6Cdn/x9PjqcUbFtdhcj/x57ZqOWQkPVCFnXeE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758191395; c=relaxed/simple; bh=gE4Rji/8SJ+UEZVXQUf6+/Ok6DOW5KtjWyQ+ski3jFY=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=pOeAXstMAeSavKa3FG3MdHYIglROuUMllub2wouzeiyVW+spYvhM7pEehJJuWJHa/x9lrxkfXP1utaMQN+tbWMVn4HEzGn8wmA9I10HxpS7ycPDLB29GrqmDWlR6rkcSYbejHkdsCZ+knuQYTfkls8zfKRae3wvCvLv09iHOdE4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=YIViwuEX; 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="YIViwuEX" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0A61DC4AF09; Thu, 18 Sep 2025 10:29:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1758191395; bh=gE4Rji/8SJ+UEZVXQUf6+/Ok6DOW5KtjWyQ+ski3jFY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YIViwuEXmwdCNUF+WLGTO3++WKGxHnF2I8VkZv8VX9wgn7ZAz3H2F73YBrBaTtay7 FpL+V7DxRRoqFA38MFKOQ282aols4vyUPBO6fqHUZphltERqiNHGxA4jOU1t1JAFrv yYsvvFquQUgE8a2hg8VbCVzXUqv/AZlUHygmV+Qg6yH7VPokS1JI1Ju8v/Fep7+o4n JsSXL1OJq5U/zupqxRKr3Lr5nxGJuDRwLPVzVBoSzx17cN1wjjyFDEeH3b1iPiuF/Y mdgq9b6ikpqVLTJYlVzEt/IjezuN38Awz7Y6riiPpAkmLw4cR0S0zAZU/jglkzSiBz eAgBsRcpXmjAg== Received: by paulmck-ThinkPad-P17-Gen-1.home (Postfix, from userid 1000) id DCA85CE10F9; Thu, 18 Sep 2025 03:29:53 -0700 (PDT) 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 v2 07/11] rcutorture: Delay forward-progress testing until boot completes Date: Thu, 18 Sep 2025 03:29:48 -0700 Message-Id: <20250918102952.2593045-7-paulmck@kernel.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Forward-progress testing can hog CPUs, which is not a great thing to do before boot has completed. This commit therefore makes the CPU-hotplug operations hold off until boot has completed. Signed-off-by: Paul E. McKenney --- kernel/rcu/rcutorture.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c index 1578d330565752..b8a684459381f2 100644 --- a/kernel/rcu/rcutorture.c +++ b/kernel/rcu/rcutorture.c @@ -3457,6 +3457,8 @@ static int rcu_torture_fwd_prog(void *args) int tested_tries =3D 0; =20 VERBOSE_TOROUT_STRING("rcu_torture_fwd_progress task started"); + while (!rcu_inkernel_boot_has_ended()) + schedule_timeout_interruptible(HZ / 10); rcu_bind_current_to_nocb(); if (!IS_ENABLED(CONFIG_SMP) || !IS_ENABLED(CONFIG_RCU_BOOST)) set_user_nice(current, MAX_NICE); --=20 2.40.1