Messages in this thread | | | Date | Mon, 03 Nov 2014 18:38:10 +0100 | From | Gregory CLEMENT <> | Subject | Re: [PATCH 04/17] irqchip: irq-armada-370-xp: suspend/resume support |
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Hi Thomas,
On 24/10/2014 13:59, Thomas Petazzoni wrote: > This commit adds suspend/resume support to the irqchip driver used on > Armada XP platforms (amongst others). It does so by adding a set of > suspend/resume syscore_ops, that will respectively save and restore > the necessary registers to ensure interrupts continue to work after > resume. > > It is worth mentioning that the affinity is lost during a > suspend/resume cycle, because when a secondary CPU is brought > off-line, all interrupts that are assigned to this CPU in terms of > affinity gets re-assigned to a still running CPU. Therefore, right > before entering suspend, all interrupts are assigned to the boot CPU.
So what about /proc/irq/*/smp_affinity ?
Do this files still represent accurate information?
Thanks,
Gregory
-- Gregory Clement, Free Electrons Kernel, drivers, real-time and embedded Linux development, consulting, training and support. http://free-electrons.com
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