[driver-core,v3,4/5] driver core: Attach devices on CPU local to device node
diff mbox series

Message ID 20181011220938.1408.87333.stgit@localhost.localdomain
State Superseded
Headers show
Series
  • Add NUMA aware async_schedule calls
Related show

Commit Message

Alexander Duyck Oct. 11, 2018, 10:09 p.m. UTC
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.

For example, in the case of initializing memory for NVDIMM this can have a
singifcant 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.

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

Patch
diff mbox series

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;