From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexander Duyck Subject: [driver-core PATCH v3 0/5] Add NUMA aware async_schedule calls Date: Thu, 11 Oct 2018 15:09:16 -0700 Message-ID: <20181011220134.1408.63391.stgit@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-path: Sender: linux-kernel-owner@vger.kernel.org To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org Cc: len.brown@intel.com, rafael@kernel.org, linux-pm@vger.kernel.org, jiangshanlai@gmail.com, pavel@ucw.cz, zwisler@kernel.org, tj@kernel.org, akpm@linux-foundation.org, alexander.h.duyck@linux.intel.com List-Id: linux-pm@vger.kernel.org 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. Ideally this solution should be agnostic enough that it can be used for any given device type. So ideally we shouldn't need to implement one-off solutions for each bus as has already kind of happened in the PCI tree with pci_call_probe. 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 for consistency 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 Added nvdimm boot time improvement data to description of patch 4 --- Alexander Duyck (5): workqueue: Provide queue_work_node to queue work near a given NUMA node async: Add support for queueing on specific NUMA node 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 drivers/base/bus.c | 23 ++---------- drivers/base/dd.c | 44 +++++++++++++++++++++++- drivers/base/power/main.c | 12 +++--- include/linux/async.h | 84 +++++++++++++++++++++++++++++++++++++++++++-- include/linux/workqueue.h | 2 + kernel/async.c | 53 ++++++++++++++++------------ kernel/workqueue.c | 84 +++++++++++++++++++++++++++++++++++++++++++++ 7 files changed, 248 insertions(+), 54 deletions(-) --