From: Greg KH <gregkh@linuxfoundation.org>
To: Alexander Duyck <alexander.h.duyck@linux.intel.com>
Cc: tj@kernel.org, akpm@linux-foundation.org,
linux-kernel@vger.kernel.org, len.brown@intel.com,
rafael@kernel.org, linux-pm@vger.kernel.org,
jiangshanlai@gmail.com, pavel@ucw.cz, zwisler@kernel.org
Subject: Re: [workqueue/driver-core PATCH v2 4/5] driver core: Attach devices on CPU local to device node
Date: Thu, 11 Oct 2018 12:45:01 +0200 [thread overview]
Message-ID: <20181011104501.GA30183@kroah.com> (raw)
In-Reply-To: <20181010230836.10609.73485.stgit@localhost.localdomain>
On Wed, Oct 10, 2018 at 04:08:40PM -0700, Alexander Duyck wrote:
> This change makes it so that we 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.
This is nice in theory, but what kind of real numbers does this show?
There's a lot of added complexity here, and what is the benifit?
Benchmarks or bootcharts that we can see would be great to have, thanks.
greg k-h
next prev parent reply other threads:[~2018-10-11 10:45 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-10 23:07 [workqueue/driver-core PATCH v2 0/5] Add NUMA aware async_schedule calls Alexander Duyck
2018-10-10 23:07 ` [workqueue/driver-core PATCH v2 1/5] workqueue: Provide queue_work_node to queue work near a given NUMA node Alexander Duyck
2018-10-11 15:04 ` Tejun Heo
2018-10-11 16:49 ` Alexander Duyck
2018-10-11 17:02 ` Greg KH
2018-10-11 17:13 ` Alexander Duyck
2018-10-10 23:08 ` [workqueue/driver-core PATCH v2 2/5] async: Add support for queueing on specific " Alexander Duyck
2018-10-11 10:47 ` Greg KH
2018-10-11 15:51 ` Alexander Duyck
2018-10-10 23:08 ` [workqueue/driver-core PATCH v2 3/5] driver core: Probe devices asynchronously instead of the driver Alexander Duyck
2018-10-10 23:08 ` [workqueue/driver-core PATCH v2 4/5] driver core: Attach devices on CPU local to device node Alexander Duyck
2018-10-11 10:45 ` Greg KH [this message]
2018-10-11 15:50 ` Alexander Duyck
2018-10-10 23:08 ` [workqueue/driver-core PATCH v2 5/5] PM core: Use new async_schedule_dev command Alexander Duyck
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