Messages in this thread Patch in this message | | | From | Xianting Tian <> | Subject | [PATCH 2/3] virtio_console: fixup potential cpu stall when free unused bufs | Date | Fri, 9 Jun 2023 21:18:16 +0800 |
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Cpu stall issue may happen if device is configured with multi queues and large queue depth, so fix it.
Signed-off-by: Xianting Tian <xianting.tian@linux.alibaba.com> --- drivers/char/virtio_console.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index b65c809a4e97..5ec4cf4ea919 100644 --- a/drivers/char/virtio_console.c +++ b/drivers/char/virtio_console.c @@ -1935,6 +1935,7 @@ static void remove_vqs(struct ports_device *portdev) flush_bufs(vq, true); while ((buf = virtqueue_detach_unused_buf(vq))) free_buf(buf, true); + cond_resched(); } portdev->vdev->config->del_vqs(portdev->vdev); kfree(portdev->in_vqs); -- 2.17.1
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