[PATCH v4 5/8] vhost: Add kthread support in function vhost_worker_queue()
From: Cindy Lu <hidden>
Date: 2024-12-10 16:45:57
Also in:
lkml, virtualization
Subsystem:
the rest, virtio host (vhost) · Maintainers:
Linus Torvalds, "Michael S. Tsirkin", Jason Wang
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 <redacted> --- 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