[PATCH v4 5/8] vhost: Add kthread support in function vhost_worker_queue()

Cindy Lu
2024-12-10T16:45:57Z

The function vhost_worker_queue() uses a function pointer in
vhost_worker, which is initialized based on the inherit_owner
value.

Signed-off-by: Cindy Lu <lulu@redhat.com>
---
drivers/vhost/vhost.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 0175bbf4d8b3..d1aec41bcd56 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -237,13 +237,16 @@ EXPORT_SYMBOL_GPL(vhost_poll_stop);
static void vhost_worker_queue(struct vhost_worker *worker,
struct vhost_work *work)
{
+ if (!worker)
+ return;
+
if (!test_and_set_bit(VHOST_WORK_QUEUED, &work->flags)) {
/* We can only add the work to the list after we're
* sure it was not in the list.
* test_and_set_bit() implies a memory barrier.
*/
llist_add(&work->node, &worker->work_list);
- vhost_task_wake(worker->vtsk);
+ worker->task_wakeup(worker);
}
}

--
2.45.0