linux-kernel - Re: [PATCH 0/6] workqueue: convert to raw_spinlock

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Message-ID: <alpine.DEB.2.21.1906261551190.32342@nanos.tec.linutronix.de>
Date:   Wed, 26 Jun 2019 15:53:43 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Tejun Heo <tj@...nel.org>
cc:     Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Lai Jiangshan <jiangshanlai@...il.com>,
        linux-kernel@...r.kernel.org, Peter Zijlstra <peterz@...radead.org>
Subject: Re: [PATCH 0/6] workqueue: convert to raw_spinlock_t

Tejun,

On Wed, 26 Jun 2019, Tejun Heo wrote:

> On Wed, Jun 26, 2019 at 09:17:19AM +0200, Sebastian Andrzej Siewior wrote:
> > On 2019-06-13 16:50:21 [+0200], To linux-kernel@...r.kernel.org wrote:
> > > Hi,
> > > 
> > > the workqueue code has been reworked in -RT to use raw_spinlock_t based
> > > locking. This change allows to schedule worker from preempt_disable()ed
> > > or IRQ disabled section on -RT. This is the last patch. The previous
> > > patches are prerequisites or tiny cleanup (like patch #1 and #2).
> > 
> > a gentle *ping*
> 
> I don't now what to make of the series.  AFAICS, there's no benefit to
> mainline.  What am I missing?

there is no downside either, right?

It helps with the ongoing RT integration into the mainline kernel and we
would appreciate if we can get the non controversial bits an pieces sorted.

Thanks,

	tglx