This series implements virtio-scsi queue steering, which gives performance improvements of up to 50% (measured both with QEMU and tcm_vhost backends). The patches build on top of the new virtio APIs at http://permalink.gmane.org/gmane.linux.kernel.virtualization/18431; the new API simplifies the locking of the virtio-scsi driver nicely, thus it makes sense to require them as a prerequisite.
Changes from the previous post, which can be found at http://permalink.gmane.org/gmane.linux.kernel.virtualization/17869: - patches 1 and 2 ("virtio: add functions for piecewise addition of buffers", "virtio-scsi: use functions for piecewise composition of buffers") split into their own series - new cleanup patch "virtio-scsi: push vq lock/unlock into virtscsi_vq_done" - reorganized code to move ACCESS_ONCE in a clearer place - included Wanlong Gao's CPU hotplug patches Ok for 3.9? It would probably be easier to get it in via Rusty's tree because of the prerequisites. James, can I get your Acked-by? Paolo Paolo Bonzini (4): virtio-scsi: redo allocation of target data virtio-scsi: pass struct virtio_scsi to virtqueue completion function virtio-scsi: push vq lock/unlock into virtscsi_vq_done virtio-scsi: introduce multiqueue support Wanlong Gao (1): virtio-scsi: reset virtqueue affinity when doing cpu hotplug drivers/scsi/virtio_scsi.c | 360 +++++++++++++++++++++++++++++++++++--------- 1 files changed, 292 insertions(+), 68 deletions(-) _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization
