linux-kernel - [PATCH 0/3] workqueue: Make the workqueue code PREEMPT

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Message-Id: <20200513162732.977489-1-bigeasy@linutronix.de>
Date:   Wed, 13 May 2020 18:27:29 +0200
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     linux-kernel@...r.kernel.org
Cc:     Tejun Heo <tj@...nel.org>, Lai Jiangshan <jiangshanlai@...il.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...nel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Subject: [PATCH 0/3] workqueue: Make the workqueue code PREEMPT_RT safe

The series changes `wq_manager_wait' from waitqueues to simple
waitqueues and its internal locking (pool::lock and wq_mayday_lock) to
raw spinlocks so that workqueues can be used on PREEMPT_RT from truly
atomic context.

Sebastian