]> asedeno.scripts.mit.edu Git - linux.git/commit
driver core: Attach devices on CPU local to device node
authorAlexander Duyck <alexander.h.duyck@linux.intel.com>
Tue, 22 Jan 2019 18:39:37 +0000 (10:39 -0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 31 Jan 2019 13:20:54 +0000 (14:20 +0100)
commitc37e20eaf4b21125898fd454f3ea6b212865d0a6
tree8bd93b653d5c088e7367402f7db1beea91863573
parent6be9238e5cb64741ff95c3ae440b112753ad93de
driver core: Attach devices on CPU local to device node

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.williams@intel.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Alexander Duyck <alexander.h.duyck@linux.intel.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/base/dd.c