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authorAlexander Duyck <alexander.h.duyck@linux.intel.com>2019-01-22 19:39:37 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-01-31 14:20:54 +0100
commitc37e20eaf4b21125898fd454f3ea6b212865d0a6 (patch)
tree8bd93b653d5c088e7367402f7db1beea91863573 /drivers/nvdimm/bus.c
parentasync: Add support for queueing on specific NUMA node (diff)
downloadlinux-c37e20eaf4b21125898fd454f3ea6b212865d0a6.tar.xz
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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>
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