linux-kernel - Re: [driver-core PATCH v6 7/9] driver core: Attach devices on CPU local to device node

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Message-ID: <CAPcyv4jzLes=Xj-YKSaTtg-suc9T5V0BqQoDb4scpx5m9xG-BA@mail.gmail.com>
Date:   Mon, 26 Nov 2018 20:50:22 -0800
From:   Dan Williams <dan.j.williams@...el.com>
To:     alexander.h.duyck@...ux.intel.com
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Greg KH <gregkh@...uxfoundation.org>,
        linux-nvdimm <linux-nvdimm@...ts.01.org>,
        Tejun Heo <tj@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linux-pm mailing list <linux-pm@...r.kernel.org>,
        jiangshanlai@...il.com, "Rafael J. Wysocki" <rafael@...nel.org>,
        "Brown, Len" <len.brown@...el.com>, Pavel Machek <pavel@....cz>,
        zwisler@...nel.org, Dave Jiang <dave.jiang@...el.com>,
        bvanassche@....org
Subject: Re: [driver-core PATCH v6 7/9] driver core: Attach devices on CPU
 local to device node

On Thu, Nov 8, 2018 at 10:07 AM Alexander Duyck
<alexander.h.duyck@...ux.intel.com> wrote:
>
> Call the asynchronous probe routines on a CPU local to the device node. By
> doing this we should be able to improve our initialization time
> significantly as we can avoid having to access the device from a remote
> node which may introduce higher latency.
>
> For example, in the case of initializing memory for NVDIMM this can have a
> significant impact as initialing 3TB on remote node can take up to 39
> seconds while initialing it on a local node only takes 23 seconds. It is
> situations like this where we will see the biggest improvement.
>
> Reviewed-by: Bart Van Assche <bvanassche@....org>
> Signed-off-by: Alexander Duyck <alexander.h.duyck@...ux.intel.com>

Looks good,

Reviewed-by: Dan Williams <dan.j.williams@...el.com>