Messages in this thread Patch in this message | | | From | Fenghua Yu <> | Subject | [PATCH v2 06/16] dmaengine: idxd: add per DSA wq workqueue for processing cr faults | Date | Mon, 6 Mar 2023 08:31:28 -0800 |
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From: Dave Jiang <dave.jiang@intel.com>
Add a workqueue for user submitted completion record fault processing. The workqueue creation and destruction lifetime will be tied to the user sub-driver since it will only be used when the wq is a user type.
Tested-by: Tony Zhu <tony.zhu@intel.com> Signed-off-by: Dave Jiang <dave.jiang@intel.com> Co-developed-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> --- drivers/dma/idxd/cdev.c | 11 +++++++++++ drivers/dma/idxd/idxd.h | 1 + 2 files changed, 12 insertions(+)
diff --git a/drivers/dma/idxd/cdev.c b/drivers/dma/idxd/cdev.c index 674bfefca088..cbe29e1a6a44 100644 --- a/drivers/dma/idxd/cdev.c +++ b/drivers/dma/idxd/cdev.c @@ -330,6 +330,13 @@ static int idxd_user_drv_probe(struct idxd_dev *idxd_dev) } mutex_lock(&wq->wq_lock); + + wq->wq = create_workqueue(dev_name(wq_confdev(wq))); + if (!wq->wq) { + rc = -ENOMEM; + goto wq_err; + } + wq->type = IDXD_WQT_USER; rc = drv_enable_wq(wq); if (rc < 0) @@ -348,7 +355,9 @@ static int idxd_user_drv_probe(struct idxd_dev *idxd_dev) err_cdev: drv_disable_wq(wq); err: + destroy_workqueue(wq->wq); wq->type = IDXD_WQT_NONE; +wq_err: mutex_unlock(&wq->wq_lock); return rc; } @@ -361,6 +370,8 @@ static void idxd_user_drv_remove(struct idxd_dev *idxd_dev) idxd_wq_del_cdev(wq); drv_disable_wq(wq); wq->type = IDXD_WQT_NONE; + destroy_workqueue(wq->wq); + wq->wq = NULL; mutex_unlock(&wq->wq_lock); } diff --git a/drivers/dma/idxd/idxd.h b/drivers/dma/idxd/idxd.h index b923b90b7299..6e56361ae658 100644 --- a/drivers/dma/idxd/idxd.h +++ b/drivers/dma/idxd/idxd.h @@ -185,6 +185,7 @@ struct idxd_wq { struct idxd_dev idxd_dev; struct idxd_cdev *idxd_cdev; struct wait_queue_head err_queue; + struct workqueue_struct *wq; struct idxd_device *idxd; int id; struct idxd_irq_entry ie; -- 2.37.1
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