From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexander Duyck Subject: Re: [workqueue/driver-core PATCH v2 1/5] workqueue: Provide queue_work_node to queue work near a given NUMA node Date: Thu, 11 Oct 2018 10:13:03 -0700 Message-ID: References: <20181010230435.10609.77825.stgit@localhost.localdomain> <20181010230715.10609.83647.stgit@localhost.localdomain> <20181011150417.GO270328@devbig004.ftw2.facebook.com> <6f91e26d-00e5-10ba-b0ee-2b9f8d50934b@linux.intel.com> <20181011170204.GA7257@kroah.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20181011170204.GA7257@kroah.com> Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org To: Greg KH Cc: Tejun Heo , 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 List-Id: linux-pm@vger.kernel.org On 10/11/2018 10:02 AM, Greg KH wrote: > On Thu, Oct 11, 2018 at 09:49:59AM -0700, Alexander Duyck wrote: >> >> >> On 10/11/2018 8:04 AM, Tejun Heo wrote: >>> On Wed, Oct 10, 2018 at 04:07:42PM -0700, Alexander Duyck wrote: >>>> This patch provides a new function queue_work_node which is meant to >>>> schedule work on a "random" CPU of the requested NUMA node. The main >>>> motivation for this is to help assist asynchronous init to better improve >>>> boot times for devices that are local to a specific node. >>>> >>>> For now we just default to the first CPU that is in the intersection of the >>>> cpumask of the node and the online cpumask. The only exception is if the >>>> CPU is local to the node we will just use the current CPU. This should work >>>> for our purposes as we are currently only using this for unbound work so >>>> the CPU will be translated to a node anyway instead of being directly used. >>>> >>>> As we are only using the first CPU to represent the NUMA node for now I am >>>> limiting the scope of the function so that it can only be used with unbound >>>> workqueues. >>>> >>>> Signed-off-by: Alexander Duyck >>> >>> Acked-by: Tejun Heo >>> >>> Please let me know how you wanna route the patch. >>> >>> Thanks. >> >> I would be good with routing the patches through you if that works. I had >> included you, Greg, and Andrew as I wasn't sure how you guys had wanted this >> routed since this affected both the workqueue and device trees. >> >> I'll update the patches to resolve the lack of kerneldoc for the new >> "async_" functions and add some comments to the patch descriptions on the >> gains seen related to some of the specific patches for v3. > > As Tejun has acked this, and it affects the driver core, I'll be glad to > take it. > > thanks, > > greg k-h Okay. That works. I will drop Tejun and Andrew to the Cc, and include you on the To line for the next submission so it is a bit more clear on who should be applying this. Thanks. - Alex