linux-kernel - Re: [PATCH v3 5/6] irq_work: Provide irq_work_queue

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Message-ID: <20201028145637.GF229044@lothringen>
Date:   Wed, 28 Oct 2020 15:56:37 +0100
From:   Frederic Weisbecker <frederic@...nel.org>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     mingo@...nel.org, linux-kernel@...r.kernel.org, will@...nel.org,
        paulmck@...nel.org, hch@....de, axboe@...nel.dk,
        chris@...is-wilson.co.uk, davem@...emloft.net, kuba@...nel.org,
        fweisbec@...il.com, oleg@...hat.com, vincent.guittot@...aro.org
Subject: Re: [PATCH v3 5/6] irq_work: Provide irq_work_queue_remote()

On Wed, Oct 28, 2020 at 03:53:24PM +0100, Peter Zijlstra wrote:
> On Wed, Oct 28, 2020 at 02:40:46PM +0100, Frederic Weisbecker wrote:
> > On Wed, Oct 28, 2020 at 12:07:12PM +0100, Peter Zijlstra wrote:
> > > While the traditional irq_work relies on the ability to self-IPI, it
> > > makes sense to provide an unconditional irq_work_queue_remote()
> > > interface.
> > 
> > We may need a reason as well here.
> 
> Rewrote it like so.
> ---
> 
> While the traditional irq_work relies on the ability to self-IPI, the
> remote irq_work only requires generic SMP bits and can thus be made
> available unconditionally.

Thanks!