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Re: [GIT pull] irq updates for 4.13

From Thomas Gleixner <tglx@linutronix.de>
Newsgroups linux.kernel
Subject Re: [GIT pull] irq updates for 4.13
Date 2017-07-04 21:20 +0200
Message-ID <tZBwB-4dv-3@gated-at.bofh.it> (permalink)
References <tZ4hk-6qv-9@gated-at.bofh.it> <tZjzH-oR-1@gated-at.bofh.it> <tZxMm-1ET-27@gated-at.bofh.it> <tZATT-3Aa-9@gated-at.bofh.it>
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On Tue, 4 Jul 2017, Linus Torvalds wrote:
> On Tue, Jul 4, 2017 at 8:17 AM, Jens Axboe <axboe@kernel.dk> wrote:
> > On 07/03/2017 06:00 PM, Linus Torvalds wrote:
> >>
> >> If they ever do come online, does that get fixed? I don't know.
> >> Somebody should check.
> >
> > Yes, the blk-mq cpu hotplug code updates mappings when CPUs come and
> > go, so that part is fine. That's exercised everytime the laptop is
> > suspended and resumed.
> 
> I don't think that's true any more. Commit fe631457ff3e changed it to
> map the initial CPU's sequentially whether they are online or not.
> Only after you run out of hardware queues will we start playing games.
> 
> That's what worries me about the conflict - the two changes did very
> different things to the same code. I'd really like somebody to take a
> look at my resolution, and just in general how those two different
> changes work together.

Hmm, I leave that to Christoph. He wrote the irq stuff and reviewed
fe631457ff3e.

Thanks,

	tglx

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Thread

Re: [GIT pull] irq updates for 4.13 Linus Torvalds <torvalds@linux-foundation.org> - 2017-07-04 02:10 +0200
  Re: [GIT pull] irq updates for 4.13 Thomas Gleixner <tglx@linutronix.de> - 2017-07-04 10:20 +0200
    Re: [GIT pull] irq updates for 4.13 Thomas Gleixner <tglx@linutronix.de> - 2017-07-04 12:30 +0200
  Re: [GIT pull] irq updates for 4.13 Jens Axboe <axboe@kernel.dk> - 2017-07-04 17:20 +0200
    Re: [GIT pull] irq updates for 4.13 Linus Torvalds <torvalds@linux-foundation.org> - 2017-07-04 20:40 +0200
      Re: [GIT pull] irq updates for 4.13 Thomas Gleixner <tglx@linutronix.de> - 2017-07-04 21:20 +0200
      Re: [GIT pull] irq updates for 4.13 Jens Axboe <axboe@kernel.dk> - 2017-07-05 00:00 +0200
  Re: [GIT pull] irq updates for 4.13 Christoph Hellwig <hch@lst.de> - 2017-07-05 17:20 +0200

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