linux-kernel - Re: [RFC][Patch v1 2/3] i40e: limit msix vectors based on housekeeping CPUs

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Message-ID: <a1cffa53-5583-be62-133f-90d29d607ebf@redhat.com>
Date:   Tue, 22 Sep 2020 17:05:55 -0400
From:   Nitesh Narayan Lal <nitesh@...hat.com>
To:     Frederic Weisbecker <frederic@...nel.org>
Cc:     bhelgaas@...gle.com, Jesse Brandeburg <jesse.brandeburg@...el.com>,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        linux-pci@...r.kernel.org, mtosatti@...hat.com,
        sassmann@...hat.com, jeffrey.t.kirsher@...el.com,
        jacob.e.keller@...el.com, jlelli@...hat.com, hch@...radead.org,
        mike.marciniszyn@...el.com, dennis.dalessandro@...el.com,
        thomas.lendacky@....com, jerinj@...vell.com,
        mathias.nyman@...el.com, jiri@...dia.com
Subject: Re: [RFC][Patch v1 2/3] i40e: limit msix vectors based on
 housekeeping CPUs


On 9/22/20 4:44 PM, Frederic Weisbecker wrote:
> On Tue, Sep 22, 2020 at 09:34:02AM -0400, Nitesh Narayan Lal wrote:
>> On 9/22/20 5:54 AM, Frederic Weisbecker wrote:
>>> But I don't also want to push toward a complicated solution to handle CPU hotplug
>>> if there is no actual problem to solve there.
>> Sure, even I am not particularly sure about the hotplug scenarios.
> Surely when isolation is something that will be configurable through
> cpuset, it will become interesting. For now it's probably not worth
> adding hundreds lines of code if nobody steps into such issue yet.
>
> What is probably more worthy for now is some piece of code to consolidate
> the allocation of those MSI vectors on top of the number of housekeeping
> CPUs.

+1

>
> Thanks.
>
-- 
Thanks
Nitesh



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