From: Frederic Weisbecker <frederic@kernel.org>
To: Boqun Feng <boqun.feng@gmail.com>
Cc: linux-kernel@vger.kernel.org, rcu@vger.kernel.org,
Neeraj Upadhyay <Neeraj.Upadhyay@amd.com>,
"Paul E. McKenney" <paulmck@kernel.org>,
Chen Zhongjin <chenzhongjin@huawei.com>,
Yang Jihong <yangjihong1@huawei.com>,
Neeraj Upadhyay <quic_neeraju@quicinc.com>,
Joel Fernandes <joel@joelfernandes.org>,
Josh Triplett <josh@joshtriplett.org>,
Steven Rostedt <rostedt@goodmis.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Lai Jiangshan <jiangshanlai@gmail.com>,
Zqiang <qiang.zhang1211@gmail.com>
Subject: Re: [PATCH v2 4/6] rcu-tasks: Maintain lists to eliminate RCU-tasks/do_exit() deadlocks
Date: Thu, 22 Feb 2024 17:32:20 +0100 [thread overview]
Message-ID: <Zdd3FEWVnxaqdgHR@localhost.localdomain> (raw)
In-Reply-To: <20240217012745.3446231-5-boqun.feng@gmail.com>
Le Fri, Feb 16, 2024 at 05:27:39PM -0800, Boqun Feng a écrit :
> From: "Paul E. McKenney" <paulmck@kernel.org>
>
> This commit continues the elimination of deadlocks involving do_exit()
> and RCU tasks by causing exit_tasks_rcu_start() to add the current
> task to a per-CPU list and causing exit_tasks_rcu_stop() to remove the
> current task from whatever list it is on. These lists will be used to
> track tasks that are exiting, while still accounting for any RCU-tasks
> quiescent states that these tasks pass though.
>
> [ paulmck: Apply Frederic Weisbecker feedback. ]
>
> Link: https://lore.kernel.org/all/20240118021842.290665-1-chenzhongjin@huawei.com/
>
> Reported-by: Chen Zhongjin <chenzhongjin@huawei.com>
> Reported-by: Yang Jihong <yangjihong1@huawei.com>
> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
> Tested-by: Yang Jihong <yangjihong1@huawei.com>
> Tested-by: Chen Zhongjin <chenzhongjin@huawei.com>
> Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
next prev parent reply other threads:[~2024-02-22 16:32 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-17 1:27 [PATCH v2 0/6] RCU tasks fixes for v6.9 Boqun Feng
2024-02-17 1:27 ` [PATCH v2 1/6] rcu-tasks: Repair RCU Tasks Trace quiescence check Boqun Feng
2024-02-17 1:27 ` [PATCH v2 2/6] rcu-tasks: Add data to eliminate RCU-tasks/do_exit() deadlocks Boqun Feng
2024-02-22 16:54 ` Frederic Weisbecker
2024-02-22 20:46 ` Paul E. McKenney
2024-02-17 1:27 ` [PATCH v2 3/6] rcu-tasks: Initialize " Boqun Feng
2024-02-22 16:21 ` Frederic Weisbecker
2024-02-22 20:41 ` Paul E. McKenney
2024-02-23 11:39 ` Frederic Weisbecker
2024-02-17 1:27 ` [PATCH v2 4/6] rcu-tasks: Maintain lists " Boqun Feng
2024-02-22 16:32 ` Frederic Weisbecker [this message]
2024-02-23 12:19 ` Frederic Weisbecker
2024-02-24 0:28 ` Paul E. McKenney
2024-02-17 1:27 ` [PATCH v2 5/6] rcu-tasks: Eliminate deadlocks involving do_exit() and RCU tasks Boqun Feng
2024-02-22 16:46 ` Frederic Weisbecker
2024-02-17 1:27 ` [PATCH v2 6/6] rcu-tasks: Maintain real-time response in rcu_tasks_postscan() Boqun Feng
2024-02-22 17:48 ` Frederic Weisbecker
2024-02-22 20:52 ` Paul E. McKenney
2024-02-22 22:56 ` Paul E. McKenney
2024-02-23 12:17 ` Frederic Weisbecker
2024-02-23 15:14 ` Frederic Weisbecker
2024-02-24 0:23 ` Paul E. McKenney
2024-02-22 16:52 ` [PATCH v2 0/6] RCU tasks fixes for v6.9 Frederic Weisbecker
2024-02-22 22:09 ` Paul E. McKenney
2024-02-23 12:25 ` Frederic Weisbecker
2024-02-24 0:43 ` Paul E. McKenney
2024-02-26 13:56 ` Frederic Weisbecker
2024-02-26 14:37 ` Paul E. McKenney
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