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Date:   Sun, 4 Jun 2017 18:17:10 +0300
From:   Sagi Grimberg <>
To:     Christoph Hellwig <>,
        Thomas Gleixner <>,
        Jens Axboe <>
Cc:     Keith Busch <>,,,
Subject: Re: [PATCH 4/8] genirq/affinity: assign vectors to all present CPUs

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


Reviewed-by: Sagi Grimberg <>

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