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| author |   Alexander Duyck <alexander.h.duyck@linux.intel.com> | 2019-01-22 10:39:37 -0800 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-31 14:20:54 +0100 |
| commit | c37e20eaf4b21125898fd454f3ea6b212865d0a6 (patch) | |
| tree | 8bd93b653d5c088e7367402f7db1beea91863573 /drivers/base/dd.c | |
| parent | async: Add support for queueing on specific NUMA node (diff) | |
| download | linux-dev-c37e20eaf4b21125898fd454f3ea6b212865d0a6.tar.xz linux-dev-c37e20eaf4b21125898fd454f3ea6b212865d0a6.zip | |
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>
Diffstat (limited to 'drivers/base/dd.c')
| -rw-r--r-- | drivers/base/dd.c | 4 |
1 files 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; |