Hi Vinayak,
On 13/11/13 11:05, Vinayak Kale wrote:
> This patch adds an accessor function for IRQ_PER_CPU flag.
> The accessor function is useful to dertermine whether an IRQ is percpu or not.
>
> Signed-off-by: Vinayak Kale <vk...@apm.com>
> ---
> include/linux/irqdesc.h | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h
> index 56fb646..acd8a3f 100644
> --- a/include/linux/irqdesc.h
> +++ b/include/linux/irqdesc.h
> @@ -152,6 +152,14 @@ static inline int irq_balancing_disabled(unsigned int
> irq)
> return desc->status_use_accessors & IRQ_NO_BALANCING_MASK;
> }
>
> +static inline int irq_is_percpu(unsigned int irq)
> +{
> + struct irq_desc *desc;
> +
> + desc = irq_to_desc(irq);
> + return (desc && (desc->status_use_accessors & IRQ_PER_CPU)) ? 1 : 0;
I don't think it is worth checking for the validity of "desc" here. All
the other accessors assume that you've not passed a stupid "irq" value.
Simply having
return !!(desc->status_use_accessors & IRQ_PER_CPU);
should be enough.
> +}
> +
> static inline void
> irq_set_lockdep_class(unsigned int irq, struct lock_class_key *class)
> {
>
Cheers,
M.
--
Jazz is not dead. It just smells funny...
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