Re: NO_HZ: timer interrupt stuck

David Miller
2007-02-23T09:25:56Z

From: Thomas Gleixner <tglx@linutronix.de>
Date: Thu, 22 Feb 2007 18:39:19 +0100

> On Thu, 2007-02-22 at 09:26 -0800, David Miller wrote:
> > BTW, I'm adding support for sparc64, and before I get much further
> > will the code handle a oneshot-only device? That's basically what I
> > have (sparc64 basically has a TSC and a "comparison" register, you
> > write the "comparison" register with the TSC value at which you'd like
> > the timer interrupt to occur, so it's one-shot and you have to write
> > it again to get the next timer).
>
> Yes, all you need is to omit the CLOCK_EVT_FEAT_PERIODIC flag when you
> register your device.

Thanks a lot Thomas.

I noticed while doing this work that the generic clock code is
incompatible with the time interpolator, since both provide a
do_{get,set}timeofday() implementation. Just FYI...