On Tuesday, January 22, 2019 7:39:37 PM CET Alexander Duyck wrote: > 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 <[email protected]> > Reviewed-by: Bart Van Assche <[email protected]> > Signed-off-by: Alexander Duyck <[email protected]>
Reviewed-by: Rafael J. Wysocki <[email protected]> > --- > 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 627ad05064e0..aa6a9c613595 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; > >
