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SubjectRe: [PATCH 14/14] xen: events: propagate irq allocation failure instead of panicking
On Wed, Mar 09, 2011 at 05:41:26PM +0000, Ian Campbell wrote:
> Running out of IRQs need not be fatal to the machine as a whole.

Do the backends/frontends deal with this appropiately?
>
> Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
> Cc: Jeremy Fitzhardinge <jeremy@goop.org>
> ---
> drivers/xen/events.c | 22 ++++++++++++++--------
> 1 files changed, 14 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/xen/events.c b/drivers/xen/events.c
> index 51c6a5b..c6f2a2e 100644
> --- a/drivers/xen/events.c
> +++ b/drivers/xen/events.c
> @@ -406,7 +406,7 @@ static void xen_irq_init(unsigned irq)
> list_add_tail(&info->list, &xen_irq_list_head);
> }
>
> -static int xen_allocate_irq_dynamic(void)
> +static int __must_check xen_allocate_irq_dynamic(void)

What is the '__must_check' for?



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