linux-kernel - Re: [Patch v1] i40e: limit the msix vectors based on housekeeping CPUs

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Message-ID: <c4672c15-5165-715e-a09b-e7f8b170665f@redhat.com>
Date:   Tue, 16 Jun 2020 13:29:34 -0400
From:   Nitesh Narayan Lal <nitesh@...hat.com>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     linux-kernel@...r.kernel.org, frederic@...nel.org,
        mtosatti@...hat.com, sassmann@...hat.com,
        jeffrey.t.kirsher@...el.com, jacob.e.keller@...el.com,
        jlelli@...hat.com
Subject: Re: [Patch v1] i40e: limit the msix vectors based on housekeeping
 CPUs


On 6/16/20 4:03 AM, Christoph Hellwig wrote:
> On Mon, Jun 15, 2020 at 04:21:25PM -0400, Nitesh Narayan Lal wrote:
>> +	hk_flags = HK_FLAG_DOMAIN | HK_FLAG_WQ;
>> +	mask = housekeeping_cpumask(hk_flags);
>> +	cpus = cpumask_weight(mask);
> Code like this has no business inside a driver.  Please provide a
> proper core API for it instead. 

Ok, I will think of a better way of doing this.

>  Also please wire up
> pci_alloc_irq_vectors* to use this API as well.

Understood, I will include this in a separate patch.

>
-- 
Thanks
Nitesh



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