From: Christoph Hellwig <hch@infradead.org>
To: Ming Lei <ming.lei@redhat.com>
Cc: Jens Axboe <axboe@fb.com>,
linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
Christoph Hellwig <hch@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>,
Laurence Oberman <loberman@redhat.com>,
Mike Snitzer <snitzer@redhat.com>
Subject: Re: [PATCH 0/2] genirq/affinity: try to make sure online CPU is assgined to irq vector
Date: Mon, 15 Jan 2018 09:40:36 -0800 [thread overview]
Message-ID: <20180115174036.GA20191@infradead.org> (raw)
In-Reply-To: <20180115160345.2611-1-ming.lei@redhat.com>
On Tue, Jan 16, 2018 at 12:03:43AM +0800, Ming Lei wrote:
> Hi,
>
> These two patches fixes IO hang issue reported by Laurence.
>
> 84676c1f21 ("genirq/affinity: assign vectors to all possible CPUs")
> may cause one irq vector assigned to all offline CPUs, then this vector
> can't handle irq any more.
Well, that very much was the intention of managed interrupts. Why
does the device raise an interrupt for a queue that has no online
cpu assigned to it?
next prev parent reply other threads:[~2018-01-15 17:40 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-15 16:03 [PATCH 0/2] genirq/affinity: try to make sure online CPU is assgined to irq vector Ming Lei
2018-01-15 16:03 ` [PATCH 1/2] genirq/affinity: move irq vectors spread into one function Ming Lei
2018-01-15 16:03 ` [PATCH 2/2] genirq/affinity: try best to make sure online CPU is assigned to vector Ming Lei
2018-01-15 17:40 ` Christoph Hellwig [this message]
2018-01-16 1:30 ` [PATCH 0/2] genirq/affinity: try to make sure online CPU is assgined to irq vector Ming Lei
2018-01-16 11:25 ` Thomas Gleixner
2018-01-16 12:23 ` Ming Lei
2018-01-16 13:28 ` Laurence Oberman
2018-01-16 15:22 ` Don Brace
2018-01-16 15:22 ` Don Brace
2018-01-16 15:35 ` Laurence Oberman
2018-01-16 15:47 ` Ming Lei
2018-01-16 15:47 ` Ming Lei
2018-02-01 10:36 ` Ming Lei
2018-02-01 10:36 ` Ming Lei
2018-02-01 14:53 ` Don Brace
2018-02-01 14:53 ` Don Brace
2018-02-01 15:04 ` Ming Lei
2018-02-01 15:04 ` Ming Lei
2018-01-16 2:15 ` Ming Lei
2018-01-15 17:43 ` Thomas Gleixner
2018-01-15 17:54 ` Laurence Oberman
2018-01-16 1:34 ` Ming Lei
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