From mboxrd@z Thu Jan  1 00:00:00 1970
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Subject: Re: [PATCH 4/8] genirq/affinity: assign vectors to all present CPUs
To: Christoph Hellwig <hch@lst.de>, Thomas Gleixner <tglx@linutronix.de>,
 Jens Axboe <axboe@kernel.dk>
Cc: Keith Busch <keith.busch@intel.com>, linux-block@vger.kernel.org,
 linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org
References: <20170603140403.27379-1-hch@lst.de>
 <20170603140403.27379-5-hch@lst.de>
From: Sagi Grimberg <sagi@grimberg.me>
Message-ID: <5a48e208-9279-9db9-2465-dfdb8d0319e5@grimberg.me>
Date: Sun, 4 Jun 2017 18:17:10 +0300
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On 03/06/17 17:03, Christoph Hellwig wrote:
> Currently we only assign spread vectors to online CPUs, which ties the
> IRQ mapping to the currently online devices and doesn't deal nicely with
> the fact that CPUs could come and go rapidly due to e.g. power management.
> 
> Instead assign vectors to all present CPUs to avoid this churn.
> 
> For this we have to build a map of all possible CPUs for a give node, as

s/give/given/

Reviewed-by: Sagi Grimberg <sagi@grimberg.me>