From: Christoph Hellwig <hch@lst.de>
To: Hannes Reinecke <hare@suse.de>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Christoph Hellwig <hch@lst.de>, Jens Axboe <axboe@kernel.dk>,
linux-block@vger.kernel.org, linux-pci@vger.kernel.org,
Linux Kernel Mailinglist <linux-kernel@vger.kernel.org>,
Hannes Reinecke <hare@suse.com>
Subject: Re: [RFC PATCH] pci: add pci_irq_get_affinity_vector()
Date: Tue, 8 Nov 2016 15:56:52 +0100 [thread overview]
Message-ID: <20161108145652.GA12817@lst.de> (raw)
In-Reply-To: <1478591241-123356-1-git-send-email-hare@suse.de>
On Tue, Nov 08, 2016 at 08:47:21AM +0100, Hannes Reinecke wrote:
> Add a reverse-mapping function to return the interrupt vector for
> any CPU if interrupt affinity is enabled.
What's the use case of it?
Also as-is this won't work due to the non-affinity vectors that
have the affinity set to all cpus. It will get even worse if we have
to support things like virtio_net that have multiple interrupts per
CPU due to the send and receive virtqueues.
next prev parent reply other threads:[~2016-11-08 14:56 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-08 7:47 [RFC PATCH] pci: add pci_irq_get_affinity_vector() Hannes Reinecke
2016-11-08 14:48 ` Thomas Gleixner
2016-11-08 14:56 ` Christoph Hellwig [this message]
2016-11-08 15:08 ` Hannes Reinecke
2016-11-08 15:08 ` Hannes Reinecke
2016-11-08 15:11 ` Christoph Hellwig
2016-11-08 15:20 ` Hannes Reinecke
2016-11-08 15:20 ` Hannes Reinecke
2016-11-08 15:25 ` Christoph Hellwig
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