diff options
| author | Bob Liu <bob.liu@oracle.com> | 2015-11-14 04:12:17 +0100 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2016-01-04 18:21:06 +0100 |
| commit | d62d86000316d7ef38e1c2e9602c3ce6d1cb57bd (patch) | |
| tree | aa9fa8a5fce0608532787214b8f40a5075871a6d /drivers/block/xen-blkback/common.h | |
| parent | xen/blkback: pseudo support for multi hardware queues/rings (diff) | |
| download | linux-d62d86000316d7ef38e1c2e9602c3ce6d1cb57bd.tar.xz linux-d62d86000316d7ef38e1c2e9602c3ce6d1cb57bd.zip | |
xen/blkback: get the number of hardware queues/rings from blkfront
Backend advertises "multi-queue-max-queues" to front, also get the negotiated
number from "multi-queue-num-queues" written by blkfront.
Signed-off-by: Bob Liu <bob.liu@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'drivers/block/xen-blkback/common.h')
| -rw-r--r-- | drivers/block/xen-blkback/common.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/block/xen-blkback/common.h b/drivers/block/xen-blkback/common.h index 310eff3cf43f..847444dc1df4 100644 --- a/drivers/block/xen-blkback/common.h +++ b/drivers/block/xen-blkback/common.h @@ -46,6 +46,7 @@ #include <xen/interface/io/protocols.h> extern unsigned int xen_blkif_max_ring_order; +extern unsigned int xenblk_max_queues; /* * This is the maximum number of segments that would be allowed in indirect * requests. This value will also be passed to the frontend. |