Messages in this thread | | | Date | Wed, 17 Sep 2014 11:07:13 +0800 | From | Jiang Liu <> | Subject | Re: [RFC Part2 v1 02/21] genirq: Introduce helper functions to support stacked irq_chip |
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On 2014/9/17 1:45, Thomas Gleixner wrote: > On Thu, 11 Sep 2014, Jiang Liu wrote: >> +#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY >> +void irq_chip_ack_parent(struct irq_data *data) >> +{ >> + data = data->parent_data; >> + if (data && data->chip && data->chip->irq_ack) >> + data->chip->irq_ack(data); > > Why is this restricted to a single parent level and does not go down > the whole stack? Hi Thomas, It happens to work on x86, and we want to achieve a bit performance advantage by not walking down the whole stack. If preferred, I will change it to walk the whole stack. Regards! Gerry
> > Thanks, > > tglx >
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