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

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Message-ID: <20180408031912.GA24737@ming.t460p>
Date:   Sun, 8 Apr 2018 11:19:13 +0800
From:   Ming Lei <ming.lei@...hat.com>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     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 4/4] genirq/affinity: irq vector spread among online
 CPUs as far as possible

On Fri, Apr 06, 2018 at 11:49:47PM +0200, Thomas Gleixner wrote:
> On Fri, 6 Apr 2018, Thomas Gleixner wrote:
> 
> > On Fri, 6 Apr 2018, Ming Lei wrote:
> > > 
> > > I will post V4 soon by using cpu_present_mask in the 1st stage irq spread.
> > > And it should work fine for Kashyap's case in normal cases.
> > 
> > No need to resend. I've changed it already and will push it out after
> > lunch.
> 
> No. Lunch did not last that long :)
> 
> I pushed out the lot to
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git irq/core
> 
> Please double check the modifications I did. The first related commit fixes
> an existing error handling bug.

I think your modification is better, especially about adding comment in
irq_create_affinity_masks().

I also testes these patches again, and they just work fine.

Thanks,
Ming