From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id BB3E021A07A80 for ; Thu, 8 Nov 2018 10:06:42 -0800 (PST) Subject: [driver-core PATCH v6 0/9] Add NUMA aware async_schedule calls From: Alexander Duyck Date: Thu, 08 Nov 2018 10:06:40 -0800 Message-ID: <154170028986.12967.2108024712555179678.stgit@ahduyck-desk1.jf.intel.com> MIME-Version: 1.0 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-nvdimm-bounces@lists.01.org Sender: "Linux-nvdimm" To: linux-kernel@vger.kernel.org, gregkh@linuxfoundation.org Cc: len.brown@intel.com, bvanassche@acm.org, linux-pm@vger.kernel.org, alexander.h.duyck@linux.intel.com, rafael@kernel.org, jiangshanlai@gmail.com, linux-nvdimm@lists.01.org, pavel@ucw.cz, zwisler@kernel.org, tj@kernel.org, akpm@linux-foundation.org List-ID: This patch set provides functionality that will help to improve the locality of the async_schedule calls used to provide deferred initialization. This patch set originally started out with me focused on just the one call to async_schedule_domain in the nvdimm tree that was being used to defer the device_add call however after doing some digging I realized the scope of this was much broader than I had originally planned. As such I went through and reworked the underlying infrastructure down to replacing the queue_work call itself with a function of my own and opted to try and provide a NUMA aware solution that would work for a broader audience. RFC->v1: Dropped nvdimm patch to submit later. It relies on code in libnvdimm development tree. Simplified queue_work_near to just convert node into a CPU. Split up drivers core and PM core patches. v1->v2: Renamed queue_work_near to queue_work_node Added WARN_ON_ONCE if we use queue_work_node with per-cpu workqueue v2->v3: Added Acked-by for queue_work_node patch Continued rename from _near to _node to be consistent with queue_work_node Renamed async_schedule_near_domain to async_schedule_node_domain Renamed async_schedule_near to async_schedule_node Added kerneldoc for new async_schedule_XXX functions Updated patch description for patch 4 to include data on potential gains v3->v4 Added patch to consolidate use of need_parent_lock Make asynchronous driver probing explicit about use of drvdata v4->v5 Added patch to move async_synchronize_full to address deadlock Added bit async_probe to act as mutex for probe/remove calls Added back nvdimm patch as code it relies on is now in Linus's tree Incorporated review comments on parent & device locking consolidation Rebased on latest linux-next v5->v6: Drop the "This patch" or "This change" from start of patch descriptions. Drop unnecessary parenthesis in first patch Use same wording for "selecting a CPU" in comments added in first patch Added kernel documentation for async_probe member of device Fixed up comments for async_schedule calls in patch 2 Moved code related setting async driver out of device.h and into dd.c Added Reviewed-by for several patches --- Alexander Duyck (9): workqueue: Provide queue_work_node to queue work near a given NUMA node async: Add support for queueing on specific NUMA node device core: Consolidate locking and unlocking of parent and device driver core: Move async_synchronize_full call driver core: Establish clear order of operations for deferred probe and remove driver core: Probe devices asynchronously instead of the driver driver core: Attach devices on CPU local to device node PM core: Use new async_schedule_dev command libnvdimm: Schedule device registration on node local to the device drivers/base/base.h | 2 drivers/base/bus.c | 46 +------- drivers/base/dd.c | 265 ++++++++++++++++++++++++++++++++++----------- drivers/base/power/main.c | 12 +- drivers/nvdimm/bus.c | 11 +- include/linux/async.h | 82 +++++++++++++- include/linux/device.h | 13 ++ include/linux/workqueue.h | 2 kernel/async.c | 53 +++++---- kernel/workqueue.c | 84 ++++++++++++++ 10 files changed, 428 insertions(+), 142 deletions(-) -- _______________________________________________ Linux-nvdimm mailing list Linux-nvdimm@lists.01.org https://lists.01.org/mailman/listinfo/linux-nvdimm