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SubjectRe: [PATCH 1/3] add flag IRQF_NO_SUSPEND in 'struct irqaction'
Date
On Friday 17 July 2009, Guanqun Lu wrote:
> We currently only bypass IRQF_TIMER in '__disable_irq',
> but Xen specific IRQs should not be disabled either.
> This commit adds a new flag to accompolish this goal
> without being mixed up with IRQF_TIMER flag.

For some obscure reasons [2/3] didn't reach my inbox. The other 2 patches
look fine to me.

Best,
Rafael


> Signed-off-by: Guanqun Lu <guanqun.lu@intel.com>
> ---
> include/linux/interrupt.h | 1 +
> kernel/irq/manage.c | 3 ++-
> 2 files changed, 3 insertions(+), 1 deletions(-)
>
> diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
> index 2721f07..99264c3 100644
> --- a/include/linux/interrupt.h
> +++ b/include/linux/interrupt.h
> @@ -58,6 +58,7 @@
> #define IRQF_PERCPU 0x00000400
> #define IRQF_NOBALANCING 0x00000800
> #define IRQF_IRQPOLL 0x00001000
> +#define IRQF_NO_SUSPEND 0x00002000
>
> /*
> * Bits used by threaded handlers:
> diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
> index 50da676..3dc4e74 100644
> --- a/kernel/irq/manage.c
> +++ b/kernel/irq/manage.c
> @@ -192,7 +192,8 @@ static inline int setup_affinity(unsigned int irq, struct irq_desc *desc)
> void __disable_irq(struct irq_desc *desc, unsigned int irq, bool suspend)
> {
> if (suspend) {
> - if (!desc->action || (desc->action->flags & IRQF_TIMER))
> + if (!desc->action ||
> + (desc->action->flags & (IRQF_TIMER | IRQF_NO_SUSPEND)))
> return;
> desc->status |= IRQ_SUSPENDED;
> }


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