Re: [Xen-devel] [PATCH 3/3] evtchn/fifo: don't spin indefinitely when setting LINK

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 31.10.13 at 16:03, David Vrabel <david.vrabel@xxxxxxxxxx> wrote:
> --- a/xen/include/xen/sched.h
> +++ b/xen/include/xen/sched.h
> @@ -68,6 +68,8 @@ extern struct domain *dom0;
>  #define EVTCHNS_PER_GROUP  (BUCKETS_PER_GROUP * EVTCHNS_PER_BUCKET)
>  #define NR_EVTCHN_GROUPS   DIV_ROUND_UP(MAX_NR_EVTCHNS, EVTCHNS_PER_GROUP)
>  
> +struct evtchn_fifo_queue;
> +

This is superfluous in C, since ...

>  struct evtchn
>  {
>  #define ECS_FREE         0 /* Channel is available for use.                  
> */
> @@ -98,6 +100,7 @@ struct evtchn
>      } u;
>      u8 priority;
>      u8 pending:1;
> +    struct evtchn_fifo_queue *q; /* Latest queue this event was on. */

... this already puts it at global scope (other than in C++).

Jan


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