diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index 5ace833de746..e5b2572ffe66 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -359,7 +359,13 @@ static int vhost_worker(void *data) llist_for_each_entry_safe(work, work_next, node, node) { clear_bit(VHOST_WORK_QUEUED, &work->flags); __set_current_state(TASK_RUNNING); +#ifdef CONFIG_KCOV + kcov_remote_start(dev->kcov_handle); +#endif work->fn(work); +#ifdef CONFIG_KCOV + kcov_remote_stop(); +#endif if (need_resched()) schedule(); } @@ -504,6 +510,9 @@ long vhost_dev_set_owner(struct vhost_dev *dev) /* No owner, become one */ dev->mm = get_task_mm(current); +#ifdef CONFIG_KCOV + dev->kcov_handle = current->kcov_handle; +#endif worker = kthread_create(vhost_worker, dev, "vhost-%d", current->pid); if (IS_ERR(worker)) { err = PTR_ERR(worker); @@ -529,6 +538,9 @@ long vhost_dev_set_owner(struct vhost_dev *dev) if (dev->mm) mmput(dev->mm); dev->mm = NULL; +#ifdef CONFIG_KCOV + dev->kcov_handle = 0; +#endif err_mm: return err; } @@ -640,6 +652,9 @@ void vhost_dev_cleanup(struct vhost_dev *dev) if (dev->worker) { kthread_stop(dev->worker); dev->worker = NULL; +#ifdef CONFIG_KCOV + dev->kcov_handle = 0; +#endif } if (dev->mm) mmput(dev->mm); diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h index 9490e7ddb340..d7ce69d97641 100644 --- a/drivers/vhost/vhost.h +++ b/drivers/vhost/vhost.h @@ -171,6 +171,9 @@ struct vhost_dev { struct list_head pending_list; wait_queue_head_t wait; int iov_limit; +#ifdef CONFIG_KCOV + u64 kcov_handle; +#endif }; void vhost_dev_init(struct vhost_dev *, struct vhost_virtqueue **vqs,