search for: scsi_tag

...e VHOST_SCSI_PREALLOC_UPAGES 2048 > #define VHOST_SCSI_PREALLOC_PROT_SGLS 2048 > @@ -189,6 +188,9 @@ struct vhost_scsi_virtqueue { > * Writers must also take dev mutex and flush under it. > */ > int inflight_idx; > + struct vhost_scsi_cmd *scsi_cmds; > + struct sbitmap scsi_tags; > + int max_cmds; > }; > > struct vhost_scsi { > @@ -324,7 +326,9 @@ static void vhost_scsi_release_cmd(struct se_cmd *se_cmd) > { > struct vhost_scsi_cmd *tv_cmd = container_of(se_cmd, > struct vhost_scsi_cmd, tvc_se_cmd); > - struct se_session *se_sess = t...

...572 static struct vhost_scsi_cmd * aef0e1e9298ab68f drivers/vhost/scsi.c Mike Christie 2020-09-21 573 vhost_scsi_get_cmd(struct vhost_virtqueue *vq, struct vhost_scsi_tpg *tpg, 95e7c4341b8e28da drivers/vhost/scsi.c Nicholas Bellinger 2014-02-22 574 unsigned char *cdb, u64 scsi_tag, u16 lun, u8 task_attr, 95e7c4341b8e28da drivers/vhost/scsi.c Nicholas Bellinger 2014-02-22 575 u32 exp_data_len, int data_direction) 057cbf49a1f08297 drivers/vhost/tcm_vhost.c Nicholas Bellinger 2012-07-18 576 { aef0e1e9298ab68f drivers/vhost/scsi.c Mike Christie 2020-09-21...

...1-31 572 static struct vhost_scsi_cmd * aef0e1e9298ab6 drivers/vhost/scsi.c Mike Christie 2020-09-21 573 vhost_scsi_get_cmd(struct vhost_virtqueue *vq, struct vhost_scsi_tpg *tpg, 95e7c4341b8e28 drivers/vhost/scsi.c Nicholas Bellinger 2014-02-22 574 unsigned char *cdb, u64 scsi_tag, u16 lun, u8 task_attr, 95e7c4341b8e28 drivers/vhost/scsi.c Nicholas Bellinger 2014-02-22 575 u32 exp_data_len, int data_direction) 057cbf49a1f082 drivers/vhost/tcm_vhost.c Nicholas Bellinger 2012-07-18 576 { aef0e1e9298ab6 drivers/vhost/scsi.c Mike Christie 2020-09-21 577...

..._queue_get(&se_sess->sess_tag_pool, &cpu); if (tag < 0) return ERR_PTR(-ENOMEM); cmd = &((struct usbg_cmd *)se_sess->sess_cmd_map)[tag]; memset(cmd, 0, sizeof(*cmd)); cmd->se_cmd.map_tag = tag; + cmd->se_cmd.map_cpu = cpu; cmd->se_cmd.tag = cmd->tag = scsi_tag; cmd->fu = fu; @@ -1288,7 +1289,8 @@ static void usbg_release_cmd(struct se_cmd *se_cmd) struct se_session *se_sess = se_cmd->se_sess; kfree(cmd->data_buf); - percpu_ida_free(&se_sess->sess_tag_pool, se_cmd->map_tag); + sbitmap_queue_clear(&se_sess->sess_tag_pool...

Removing the percpu_ida code nets over 400 lines of removal. It's not as spectacular as deleting an entire architecture, but it's still a worthy reduction in lines of code. Untested due to lack of hardware and not understanding how to set up a target platform. Changes from v1: - Fixed bugs pointed out by Jens in iscsit_wait_for_tag() - Abstracted out tag freeing as requested by Bart

Removing the percpu_ida code nets over 400 lines of removal. It's not as spectacular as deleting an entire architecture, but it's still a worthy reduction in lines of code. Untested due to lack of hardware and not understanding how to set up a target platform. Changes from v1: - Fixed bugs pointed out by Jens in iscsit_wait_for_tag() - Abstracted out tag freeing as requested by Bart

From: Matthew Wilcox <mawilcox at microsoft.com> This is a pretty rough-and-ready conversion of the target drivers from using percpu_ida to sbitmap. It compiles; I don't have a target setup, so it's completely untested. I haven't tried to do anything particularly clever here, so it's possible that, for example, the wait queue in iscsi_target_util could be more clever, like

The following patches were built over linux-next which contains various vhost patches in mst's tree and the vhost_task patchset in Christian Brauner's tree: git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux.git kernel.user_worker branch: https://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux.git/log/?h=kernel.user_worker The latter patchset handles the review comment