linux-kernel - Re: [PATCH V3 0/4] genirq/affinity: irq vector spread among online CPUs as far as possible

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Message-ID: <alpine.DEB.2.21.1804031435450.2511@nanos.tec.linutronix.de>
Date:   Tue, 3 Apr 2018 14:55:07 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Ming Lei <ming.lei@...hat.com>
cc:     Artem Bityutskiy <dedekind1@...il.com>,
        Jens Axboe <axboe@...nel.dk>,
        Christoph Hellwig <hch@...radead.org>,
        linux-kernel@...r.kernel.org, linux-block@...r.kernel.org,
        Laurence Oberman <loberman@...hat.com>
Subject: Re: [PATCH V3 0/4] genirq/affinity: irq vector spread among online
 CPUs as far as possible

Ming,

On Fri, 30 Mar 2018, Ming Lei wrote:
> On Fri, Mar 09, 2018 at 04:08:19PM +0100, Thomas Gleixner wrote:
> > Thoughts?
> 
> Given this patchset doesn't have effect on normal machines without
> supporting physical CPU hotplug, it can fix performance regression on
> machines which might support physical CPU hotplug(cpu_present_mask !=
> cpu_possible_mask) with some extra memory allocation cost.
>
> So is there any chance to make it in v4.17?

Sorry, that thing fell through the cracks. I'll queue it now and try to do
a pull request late in the merge window.

Thanks,

	tglx