linux-kernel - [workqueue/driver-core PATCH 4/5] driver core: Attach devices on CPU local to device node

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Message-ID: <20181005183424.8790.66813.stgit@localhost.localdomain>
Date:   Fri, 05 Oct 2018 11:34:24 -0700
From:   Alexander Duyck <alexander.h.duyck@...ux.intel.com>
To:     tj@...nel.org, gregkh@...uxfoundation.org,
        akpm@...ux-foundation.org, linux-kernel@...r.kernel.org
Cc:     len.brown@...el.com, rafael@...nel.org, linux-pm@...r.kernel.org,
        jiangshanlai@...il.com, pavel@....cz, zwisler@...nel.org,
        alexander.h.duyck@...ux.intel.com
Subject: [workqueue/driver-core PATCH 4/5] driver core: Attach devices on
 CPU local to device node

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.

Signed-off-by: Alexander Duyck <alexander.h.duyck@...ux.intel.com>
---
 drivers/base/dd.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index 5ba366c1cb83..81472dc44a70 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -826,7 +826,7 @@ static int __device_attach(struct device *dev, bool allow_async)
 			 */
 			dev_dbg(dev, "scheduling asynchronous probe\n");
 			get_device(dev);
-			async_schedule(__device_attach_async_helper, dev);
+			async_schedule_dev(__device_attach_async_helper, dev);
 		} else {
 			pm_request_idle(dev);
 		}
@@ -927,7 +927,7 @@ static int __driver_attach(struct device *dev, void *data)
 		if (!dev->driver) {
 			get_device(dev);
 			dev_set_drvdata(dev, drv);
-			async_schedule(__driver_attach_async_helper, dev);
+			async_schedule_dev(__driver_attach_async_helper, dev);
 		}
 		device_unlock(dev);
 		return 0;