mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-29 05:44:11 +00:00
Code Issues Releases Wiki Activity

dmaengine: idxd: add per DSA wq workqueue for processing cr faults

Browse source 
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>
Link: https://lore.kernel.org/r/20230407203143.2189681-7-fenghua.yu@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Dave Jiang 2023-04-07 13:31:33 -07:00 committed by Vinod Koul
parent 5fbe6503b5
commit 2f30decd2f
2 changed files with 12 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

11
drivers/dma/idxd/cdev.c
View file

@ -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);
}

1
drivers/dma/idxd/idxd.h
View file

@ -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;