linux-kernel - [PATCH v2 0/2] workqueue: Make the workqueue code PREEMPT

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Date:   Wed, 27 May 2020 21:46:31 +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 v2 0/2] 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.

v1…v2: Use rcuwait instead of swait.

v1 can be found at
   https://lore.kernel.org/lkml/20200513162732.977489-1-bigeasy@linutronix.de/

Sebastian