linux-kernel - Re: [Patch v4 1/3] lib: Restrict cpumask_local

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Message-ID: <875z368f0k.fsf@nanos.tec.linutronix.de>
Date:   Fri, 05 Feb 2021 20:56:43 +0100
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Nitesh Narayan Lal <nitesh@...hat.com>,
        Marcelo Tosatti <mtosatti@...hat.com>
Cc:     Robin Murphy <robin.murphy@....com>, linux-kernel@...r.kernel.org,
        linux-api@...r.kernel.org, frederic@...nel.org,
        juri.lelli@...hat.com, abelits@...vell.com, bhelgaas@...gle.com,
        linux-pci@...r.kernel.org, rostedt@...dmis.org, mingo@...nel.org,
        peterz@...radead.org, davem@...emloft.net,
        akpm@...ux-foundation.org, sfr@...b.auug.org.au,
        stephen@...workplumber.org, rppt@...ux.vnet.ibm.com,
        jinyuqi@...wei.com, zhangshaokun@...ilicon.com
Subject: Re: [Patch v4 1/3] lib: Restrict cpumask_local_spread to houskeeping CPUs

On Fri, Jan 29 2021 at 09:35, Nitesh Narayan Lal wrote:
> On 1/29/21 9:23 AM, Marcelo Tosatti wrote:
>>> I am not sure about the PCI patch as I don't think we can control that from
>>> the userspace or maybe I am wrong?
>> You mean "lib: Restrict cpumask_local_spread to housekeeping CPUs" ?
>
> No, "PCI: Restrict probe functions to housekeeping CPUs".

That part is fine because it just moves the probing to a work queue on a
housekeeping CPU. But that has nothing to do with the interrupt
spreading library.

Thanks,

        tglx