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 3F49A153BC9; Thu, 22 Feb 2024 16:52:26 +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=1708620746; cv=none; b=FyFepszDKTYOh2UUQt3NZQdu0eX8DuWinRrgo7opH8V9qOM3GX0mmTuStLwmsPyLI/J7S1W/nnwmcGhyZUWMeSmptpfIOZQdeRUWkMWDKf3zB3XMkagL6nS7LYKbfKM/+ZEvxKwn8LFMTeEXP/s0AA9IjA/zPxhQmay86UoObfU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708620746; c=relaxed/simple; bh=98Sm4DZ8Y1ZioHme9G4K5gXY1XZZ3VUczoPsHQr9Qhg=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=PWPVoWiyRuUBQ5usLAibH9HDom1X7KHe1drzSfbJGw3aRFeAq7x/d8y22muFFe6Se8IkAKE6o0lptC61duXVLgtmn+8dE7mikizgpNa5lm3ru9/VvgJ9rfQlznf+Wz3Gd/sJtXQSr/7JgJO6BwSc2SvGjTNn7FmGM6YmmDq0r88= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=G0QK9tFx; 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="G0QK9tFx" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BA55BC433C7; Thu, 22 Feb 2024 16:52:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1708620746; bh=98Sm4DZ8Y1ZioHme9G4K5gXY1XZZ3VUczoPsHQr9Qhg=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=G0QK9tFxHTWHbW973ceBcqVxgJ9lKHZLL4ZHXiqXJwL8ThTWYF7hcbAKuoGcUsZ6B uKRTjIOqSnJaXRYzaAssp/caPIRBVJZeJpxi2AjuGJPOIypwZmb4SDbbLc5eNMdPyE CV6KBevicSl2yQ5b8vbRVueXipUZq7DUkk7lxbiU5w1ReBxTezoIMDEpQ0ZKvGGy1d 3OJK0JNTqsi79RYZAp9v+fNh/VQumk8yzGZJqhuLxD3LtOBOmN3IQzybP14A8FfMUS OmJJWKFSIqH7Mouq1Xzq95nWEu5EhQtxmsExjxRcmthOE6gRHgWPW+zsgebIii3c5q 2o5MgefxDfI6g== Date: Thu, 22 Feb 2024 17:52:23 +0100 From: Frederic Weisbecker To: Boqun Feng Cc: linux-kernel@vger.kernel.org, rcu@vger.kernel.org, Neeraj Upadhyay Subject: Re: [PATCH v2 0/6] RCU tasks fixes for v6.9 Message-ID: References: <20240217012745.3446231-1-boqun.feng@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20240217012745.3446231-1-boqun.feng@gmail.com> Le Fri, Feb 16, 2024 at 05:27:35PM -0800, Boqun Feng a écrit : > Hi, > > This series contains the fixes of RCU tasks for v6.9. You can also find > the series at: > > git://git.kernel.org/pub/scm/linux/kernel/git/boqun/linux.git rcu-tasks.2024.02.14a > > Changes since v1: > > * Update with Paul's rework on "Eliminate deadlocks involving > do_exit() and RCU task" > > The detailed list of changes: > > Paul E. McKenney (6): > rcu-tasks: Repair RCU Tasks Trace quiescence check > rcu-tasks: Add data to eliminate RCU-tasks/do_exit() deadlocks > rcu-tasks: Initialize data to eliminate RCU-tasks/do_exit() deadlocks > rcu-tasks: Maintain lists to eliminate RCU-tasks/do_exit() deadlocks > rcu-tasks: Eliminate deadlocks involving do_exit() and RCU tasks Food for later thoughts and further improvements: would it make sense to call exit_rcu_tasks_start() on fork() instead and rely solely on each CPUs' rtp_exit_list instead of the tasklist? Thanks. > rcu-tasks: Maintain real-time response in rcu_tasks_postscan() > > include/linux/rcupdate.h | 4 +- > include/linux/sched.h | 2 + > init/init_task.c | 1 + > kernel/fork.c | 1 + > kernel/rcu/tasks.h | 110 ++++++++++++++++++++++++++++++--------- > 5 files changed, 90 insertions(+), 28 deletions(-) > > -- > 2.43.0 > >