xen/blkfront: pseudo support for multi hardware queues/rings

Browse Source

Preparatory patch for multiple hardware queues (rings). The number of
rings is unconditionally set to 1, larger number will be enabled in
patch "xen/blkfront: negotiate number of queues/rings to be used with backend"
so as to make review easier.

Note that blkfront_gather_backend_features does not call
blkfront_setup_indirect anymore (as that needs to be done per ring).
That means that in blkif_recover/blkif_connect we have to do it in a loop
(bounded by nr_rings).

Signed-off-by: Bob Liu <bob.liu@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

...

This commit is contained in:

Bob Liu

2015-11-14 11:12:12 +08:00

committed by Konrad Rzeszutek Wilk

parent 81f3516157

commit 3df0e50599

1 changed files with 200 additions and 147 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download Patch File Download Diff File Expand all files Collapse all files

drivers/block/xen-blkfront.c

+200 -147

File diff suppressed because it is too large Load Diff