Messages in this thread | | | Date | Sun, 2 Aug 2015 11:10:21 +0200 (CEST) | From | Thomas Gleixner <> | Subject | Re: [PATCH 1/3] clocksource: atmel-st: Remove irq handler when clock event is unused |
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On Mon, 20 Jul 2015, Thomas Gleixner wrote:
> On Mon, 20 Jul 2015, Alexandre Belloni wrote: > > > On 20/07/2015 at 11:04:30 +0200, Thomas Gleixner wrote : > > > That's why I used setup/remove_irq() in the stale RT changes. > > > > > > > Hum, actually, you hit the same thing with setup/remove_irq (and I'm not sure > > to follow why): > > It's the kmalloc of the proc interface. So back to the drawing > board. I'll think about it tomorrow with brain awake.
So the only idea I could come up with is the old approach of creating a dummy irq chip for the interrupts which share that timer/uart/rtc whatever line.
I think Boris Brezillon had implemented it at some point, but it was shot down for reasons I can't remember. That would allow us to simply have disable_irq_nosync/enable_irq in the relevant code pathes and be done with it. I guess I need to find the references and give it a try again if nobody beats me to it.
Thanks,
tglx
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