[driver-core PATCH v9 6/9] driver core: Attach devices on CPU local to device node

[Alexander Duyck]

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.

For example, in the case of initializing memory for NVDIMM this can have a
significant impact as initialing 3TB on remote node can take up to 39
seconds while initialing it on a local node only takes 23 seconds. It is
situations like this where we will see the biggest improvement.

Reviewed-by: Dan Williams <dan.j.willi...@intel.com>
Reviewed-by: Bart Van Assche <bvanass...@acm.org>
Signed-off-by: Alexander Duyck <alexander.h.du...@linux.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 3353f654861b..be9040db8321 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -829,7 +829,7 @@ 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);
                }
@@ -989,7 +989,7 @@ static int __driver_attach(struct device *dev, void *data)
                if (!dev->driver) {
                        get_device(dev);
                        dev->p->async_driver = drv;
-                       async_schedule(__driver_attach_async_helper, dev);
+                       async_schedule_dev(__driver_attach_async_helper, dev);
                }
                device_unlock(dev);
                return 0;