search for: vscsi

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.

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). 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, 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

...ude <scsi/scsi_cmnd.h> #define VIRTIO_SCSI_MEMPOOL_SZ 64 +#define VIRTIO_SCSI_EVENT_LEN 8 /* Command queue element */ struct virtio_scsi_cmd { @@ -43,6 +44,12 @@ struct virtio_scsi_cmd { } resp; } ____cacheline_aligned_in_smp; +struct virtio_scsi_event_node { + struct virtio_scsi *vscsi; + struct virtio_scsi_event event; + struct work_struct work; +}; + 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 virt...

...ude <scsi/scsi_cmnd.h> #define VIRTIO_SCSI_MEMPOOL_SZ 64 +#define VIRTIO_SCSI_EVENT_LEN 8 /* Command queue element */ struct virtio_scsi_cmd { @@ -43,6 +44,12 @@ struct virtio_scsi_cmd { } resp; } ____cacheline_aligned_in_smp; +struct virtio_scsi_event_node { + struct virtio_scsi *vscsi; + struct virtio_scsi_event event; + struct work_struct work; +}; + 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 virt...

...ude <scsi/scsi_cmnd.h> #define VIRTIO_SCSI_MEMPOOL_SZ 64 +#define VIRTIO_SCSI_EVENT_LEN 8 /* Command queue element */ struct virtio_scsi_cmd { @@ -43,6 +44,12 @@ struct virtio_scsi_cmd { } resp; } ____cacheline_aligned_in_smp; +struct virtio_scsi_event_node { + struct virtio_scsi *vscsi; + struct virtio_scsi_event event; + struct work_struct work; +}; + 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 ready for event vq */ + struct virt...

...ude <scsi/scsi_cmnd.h> #define VIRTIO_SCSI_MEMPOOL_SZ 64 +#define VIRTIO_SCSI_EVENT_LEN 8 /* Command queue element */ struct virtio_scsi_cmd { @@ -43,6 +44,12 @@ struct virtio_scsi_cmd { } resp; } ____cacheline_aligned_in_smp; +struct virtio_scsi_event_node { + struct virtio_scsi *vscsi; + struct virtio_scsi_event event; + struct work_struct work; +}; + 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 ready for event vq */ + struct virt...

...5 100644 --- a/drivers/scsi/virtio_scsi.c +++ b/drivers/scsi/virtio_scsi.c @@ -957,6 +957,10 @@ static void virtscsi_remove(struct virtio_device *vdev) #ifdef CONFIG_PM static int virtscsi_freeze(struct virtio_device *vdev) { + struct Scsi_Host *sh = virtio_scsi_host(vdev); + struct virtio_scsi *vscsi = shost_priv(sh); + + unregister_hotcpu_notifier(&vscsi->nb); virtscsi_remove_vqs(vdev); return 0; } @@ -965,8 +969,17 @@ static int virtscsi_restore(struct virtio_device *vdev) { struct Scsi_Host *sh = virtio_scsi_host(vdev); struct virtio_scsi *vscsi = shost_priv(sh); + int err;...

...5 100644 --- a/drivers/scsi/virtio_scsi.c +++ b/drivers/scsi/virtio_scsi.c @@ -957,6 +957,10 @@ static void virtscsi_remove(struct virtio_device *vdev) #ifdef CONFIG_PM static int virtscsi_freeze(struct virtio_device *vdev) { + struct Scsi_Host *sh = virtio_scsi_host(vdev); + struct virtio_scsi *vscsi = shost_priv(sh); + + unregister_hotcpu_notifier(&vscsi->nb); virtscsi_remove_vqs(vdev); return 0; } @@ -965,8 +969,17 @@ static int virtscsi_restore(struct virtio_device *vdev) { struct Scsi_Host *sh = virtio_scsi_host(vdev); struct virtio_scsi *vscsi = shost_priv(sh); + int err;...

...virtio32 reason; } __packed; struct virtio_scsi_config { diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c index b83846f..c2779ea 100644 --- a/drivers/scsi/virtio_scsi.c +++ b/drivers/scsi/virtio_scsi.c @@ -158,7 +158,7 @@ static void virtscsi_complete_cmd(struct virtio_scsi *vscsi, void *buf) sc, resp->response, resp->status, resp->sense_len); sc->result = resp->status; - virtscsi_compute_resid(sc, resp->resid); + virtscsi_compute_resid(sc, __virtio32_to_cpu(vscsi->vdev, resp->resid)); switch (resp->response) { case VIRTIO_SCSI_S_OK:...

...virtio32 reason; } __packed; struct virtio_scsi_config { diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c index b83846f..c2779ea 100644 --- a/drivers/scsi/virtio_scsi.c +++ b/drivers/scsi/virtio_scsi.c @@ -158,7 +158,7 @@ static void virtscsi_complete_cmd(struct virtio_scsi *vscsi, void *buf) sc, resp->response, resp->status, resp->sense_len); sc->result = resp->status; - virtscsi_compute_resid(sc, resp->resid); + virtscsi_compute_resid(sc, __virtio32_to_cpu(vscsi->vdev, resp->resid)); switch (resp->response) { case VIRTIO_SCSI_S_OK:...

...virtio32 reason; } __packed; struct virtio_scsi_config { diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c index b83846f..d9ec806 100644 --- a/drivers/scsi/virtio_scsi.c +++ b/drivers/scsi/virtio_scsi.c @@ -158,7 +158,7 @@ static void virtscsi_complete_cmd(struct virtio_scsi *vscsi, void *buf) sc, resp->response, resp->status, resp->sense_len); sc->result = resp->status; - virtscsi_compute_resid(sc, resp->resid); + virtscsi_compute_resid(sc, virtio32_to_cpu(vscsi->vdev, resp->resid)); switch (resp->response) { case VIRTIO_SCSI_S_OK: se...

...virtio32 reason; } __packed; struct virtio_scsi_config { diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c index b83846f..d9ec806 100644 --- a/drivers/scsi/virtio_scsi.c +++ b/drivers/scsi/virtio_scsi.c @@ -158,7 +158,7 @@ static void virtscsi_complete_cmd(struct virtio_scsi *vscsi, void *buf) sc, resp->response, resp->status, resp->sense_len); sc->result = resp->status; - virtscsi_compute_resid(sc, resp->resid); + virtscsi_compute_resid(sc, virtio32_to_cpu(vscsi->vdev, resp->resid)); switch (resp->response) { case VIRTIO_SCSI_S_OK: se...