search for: virtio_scsi_target_st

Hi all, this series adds multiqueue support to the virtio-scsi driver, based on Jason Wang's work on virtio-net. It uses a simple queue steering algorithm that expects one queue per CPU. LUNs in the same target always use the same queue (so that commands are not reordered); queue switching occurs when the request being queued is the only one for the target. Also based on Jason's

Hi all, this series adds multiqueue support to the virtio-scsi driver, based on Jason Wang's work on virtio-net. It uses a simple queue steering algorithm that expects one queue per CPU. LUNs in the same target always use the same queue (so that commands are not reordered); queue switching occurs when the request being queued is the only one for the target. Also based on Jason's

This series implements virtio-scsi queue steering, which gives performance improvements of up to 50% (measured both with QEMU and tcm_vhost backends). This version rebased on Rusty's virtio ring rework patches. We hope this can go into virtio-next together with the virtio ring rework pathes. V4: rebase on virtio ring rework patches (rusty's pending-rebases branch) V3 and be found

This series implements virtio-scsi queue steering, which gives performance improvements of up to 50% (measured both with QEMU and tcm_vhost backends). This version rebased on Rusty's virtio ring rework patches. We hope this can go into virtio-next together with the virtio ring rework pathes. V4: rebase on virtio ring rework patches (rusty's pending-rebases branch) V3 and be found

This series implements virtio-scsi queue steering, which gives performance improvements of up to 50% (measured both with QEMU and tcm_vhost backends). This version rebased on Rusty's virtio ring rework patches. We hope this can go into virtio-next together with the virtio ring rework pathes. V5: improving the grammar of 1/5 (Paolo) move the dropping of sg_elems to 'virtio-scsi: use

This series implements virtio-scsi queue steering, which gives performance improvements of up to 50% (measured both with QEMU and tcm_vhost backends). This version rebased on Rusty's virtio ring rework patches. We hope this can go into virtio-next together with the virtio ring rework pathes. V5: improving the grammar of 1/5 (Paolo) move the dropping of sg_elems to 'virtio-scsi: use

This series implements virtio-scsi queue steering, which gives performance improvements of up to 50% (measured both with QEMU and tcm_vhost backends). This version rebased on Rusty's virtio ring rework patches, which has already gone into virtio-next today. We hope this can go into virtio-next together with the virtio ring rework pathes. V6: rework "redo allocation of target data"

This series implements virtio-scsi queue steering, which gives performance improvements of up to 50% (measured both with QEMU and tcm_vhost backends). This version rebased on Rusty's virtio ring rework patches, which has already gone into virtio-next today. We hope this can go into virtio-next together with the virtio ring rework pathes. V6: rework "redo allocation of target data"

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.

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.

Hi all, this series adds multiqueue support to the virtio-scsi driver, based on Jason Wang's work on virtio-net. It uses a simple queue steering algorithm that expects one queue per CPU. LUNs in the same target always use the same queue (so that commands are not reordered); queue switching occurs when the request being queued is the only one for the target. Also based on Jason's

Hi all, this series adds multiqueue support to the virtio-scsi driver, based on Jason Wang's work on virtio-net. It uses a simple queue steering algorithm that expects one queue per CPU. LUNs in the same target always use the same queue (so that commands are not reordered); queue switching occurs when the request being queued is the only one for the target. Also based on Jason's

This series implements virtio-scsi queue steering, which gives performance improvements of up to 50% (measured both with QEMU and tcm_vhost backends). This version rebased on Rusty's virtio ring rework patches, which has already gone into virtio-next today. We hope this can go into virtio-next together with the virtio ring rework pathes. V7: respin to fix the patch apply error V6: rework

This series implements virtio-scsi queue steering, which gives performance improvements of up to 50% (measured both with QEMU and tcm_vhost backends). This version rebased on Rusty's virtio ring rework patches, which has already gone into virtio-next today. We hope this can go into virtio-next together with the virtio ring rework pathes. V7: respin to fix the patch apply error V6: rework

OK, this is (ab)uses some of Paolo's patches. The first 7 are candidates for this merge window (maybe), the rest I'm not so sure about. Thanks, Rusty. Paolo Bonzini (3): scatterlist: introduce sg_unmark_end virtio-blk: reorganize virtblk_add_req virtio-blk: use virtqueue_add_sgs on req path Rusty Russell (13): virtio_ring: virtqueue_add_sgs, to add multiple sgs. virtio-blk:

OK, this is (ab)uses some of Paolo's patches. The first 7 are candidates for this merge window (maybe), the rest I'm not so sure about. Thanks, Rusty. Paolo Bonzini (3): scatterlist: introduce sg_unmark_end virtio-blk: reorganize virtblk_add_req virtio-blk: use virtqueue_add_sgs on req path Rusty Russell (13): virtio_ring: virtqueue_add_sgs, to add multiple sgs. virtio-blk:

...1, event_node, + err = virtqueue_add_buf(vscsi->event_vq.vq, NULL, &sg, event_node, GFP_ATOMIC); if (!err) virtqueue_kick(vscsi->event_vq.vq); @@ -378,7 +378,7 @@ static void virtscsi_map_sgl(struct scatterlist *sg, unsigned int *p_idx, */ static void virtscsi_map_cmd(struct virtio_scsi_target_state *tgt, struct virtio_scsi_cmd *cmd, - unsigned *out_num, unsigned *in_num, + unsigned *out, unsigned *in, size_t req_size, size_t resp_size) { struct scsi_cmnd *sc = cmd->sc; @@ -392,7 +392,7 @@ static void virtscsi_map_cmd(struct virtio_scsi_target_state *tg...

...1, event_node, + err = virtqueue_add_buf(vscsi->event_vq.vq, NULL, &sg, event_node, GFP_ATOMIC); if (!err) virtqueue_kick(vscsi->event_vq.vq); @@ -378,7 +378,7 @@ static void virtscsi_map_sgl(struct scatterlist *sg, unsigned int *p_idx, */ static void virtscsi_map_cmd(struct virtio_scsi_target_state *tgt, struct virtio_scsi_cmd *cmd, - unsigned *out_num, unsigned *in_num, + unsigned *out, unsigned *in, size_t req_size, size_t resp_size) { struct scsi_cmnd *sc = cmd->sc; @@ -392,7 +392,7 @@ static void virtscsi_map_cmd(struct virtio_scsi_target_state *tg...

...; + struct virtio_scsi_vq { /* Protects vq */ spinlock_t vq_lock; @@ -67,6 +74,9 @@ struct virtio_scsi { struct virtio_scsi_vq event_vq; struct virtio_scsi_vq req_vq; + /* Get some buffers reday for event vq */ + struct virtio_scsi_event_node event_list[VIRTIO_SCSI_EVENT_LEN]; + struct virtio_scsi_target_state *tgt[]; }; @@ -202,6 +212,97 @@ static void virtscsi_ctrl_done(struct virtqueue *vq) spin_unlock_irqrestore(&vscsi->ctrl_vq.vq_lock, flags); }; +static int virtscsi_kick_event(struct virtio_scsi *vscsi, + struct virtio_scsi_event_node *event_node) +{ + int ret; + struct s...

...; + struct virtio_scsi_vq { /* Protects vq */ spinlock_t vq_lock; @@ -67,6 +74,9 @@ struct virtio_scsi { struct virtio_scsi_vq event_vq; struct virtio_scsi_vq req_vq; + /* Get some buffers reday for event vq */ + struct virtio_scsi_event_node event_list[VIRTIO_SCSI_EVENT_LEN]; + struct virtio_scsi_target_state *tgt[]; }; @@ -202,6 +212,97 @@ static void virtscsi_ctrl_done(struct virtqueue *vq) spin_unlock_irqrestore(&vscsi->ctrl_vq.vq_lock, flags); }; +static int virtscsi_kick_event(struct virtio_scsi *vscsi, + struct virtio_scsi_event_node *event_node) +{ + int ret; + struct s...