[PATCH v3 5/9] vhost: Add kthread support in function vhost_worker_queue()
From: Cindy Lu <hidden>
Date: 2024-11-05 07:27:55
Also in:
lkml, virtualization
Subsystem:
the rest, virtio host (vhost) · Maintainers:
Linus Torvalds, "Michael S. Tsirkin", Jason Wang
The function vhost_worker_queue() uses vhost_task_fn and selects the different mode based on the value of inherit_owner. Signed-off-by: Cindy Lu <redacted> --- drivers/vhost/vhost.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 603b146fccc1..8b7ddfb33c61 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c@@ -238,13 +238,18 @@ EXPORT_SYMBOL_GPL(vhost_poll_stop); static void vhost_worker_queue(struct vhost_worker *worker, struct vhost_work *work) { + if (!worker && !worker->fn) + 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->fn->wakeup(worker->dev->inherit_owner ? + (void *)worker->vtsk : + (void *)worker->task); } }
--
2.45.0