Re: [PATCH net-next v4 5/7] eventpoll: Control irq suspension for prefer_busy_poll

From: Hillf Danton
Date: Sat Nov 02 2024 - 19:40:02 EST


On Sat, 2 Nov 2024 00:52:01 +0000 Martin Karsten <mkarsten@xxxxxxxxxxxx>
>
> @@ -2005,8 +2032,10 @@ static int ep_poll(struct eventpoll *ep, struct epoll_event __user *events,
> * trying again in search of more luck.
> */
> res = ep_send_events(ep, events, maxevents);
> - if (res)
> + if (res) {
> + ep_suspend_napi_irqs(ep);

Leave napi irq intact in case of -EINTR.

> return res;
> + }
> }
>
> if (timed_out)
> --
> 2.25.1