[RFC PATCH 1/3] genirq: add support for per-cpu dev_id interrupts
Michał Mirosław
mirqus at gmail.com
Thu Sep 15 17:36:23 EDT 2011
2011/9/15 Marc Zyngier <marc.zyngier at arm.com>:
[...]
> diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
> index a103732..f9b7fa3 100644
> --- a/include/linux/interrupt.h
> +++ b/include/linux/interrupt.h
> @@ -95,6 +95,7 @@ typedef irqreturn_t (*irq_handler_t)(int, void *);
> * @flags: flags (see IRQF_* above)
> * @name: name of the device
> * @dev_id: cookie to identify the device
> + * @percpu_dev_id: cookie to identify the device
> * @next: pointer to the next irqaction for shared interrupts
> * @irq: interrupt number
> * @dir: pointer to the proc/irq/NN/name entry
> @@ -104,17 +105,20 @@ typedef irqreturn_t (*irq_handler_t)(int, void *);
> * @thread_mask: bitmask for keeping track of @thread activity
> */
> struct irqaction {
[...]
> + void *dev_id;
> +#ifdef CONFIG_IRQ_PERCPU_DEVID
> + void __percpu *percpu_dev_id;
> +#endif
Those two can share the memory (in a anonymous union), if I read the
idea correctly.
Best Regards,
Michał Mirosław
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