Re: [Regression] Negative time on Acer Ferrari One with current -git

From: Rafael J. Wysocki
Date: Sat May 22 2010 - 16:54:21 EST


On Saturday 22 May 2010, Thomas Gleixner wrote:
> On Sat, 22 May 2010, Thomas Gleixner wrote:
>
> > On Sat, 22 May 2010, Rafael J. Wysocki wrote:
> > > On Saturday 22 May 2010, Thomas Gleixner wrote:
> > >
> > > > Also which clocksource is used ?
> > >
> > > hpet
> >
> > Hmm, there is only one hpet related commit sin .34: 30a564be9d
> > and I can hardly see how this should be related.
>
> Does the problem persist if you disable HPET on the kernel command line ?

I didn't try that, but I bisected it in the meantime which lead to:

commit 64ce4c2f5252f25798117fa80a027993163d6d84
Author: John Stultz <johnstul@xxxxxxxxxx>
Date: Thu Mar 11 14:04:47 2010 -0800

time: Clean up warp_clock()

warp_clock() currently accesses timekeeping internal state directly, which
is unnecessary. Convert it to use the proper timekeeping interfaces.

Signed-off-by: John Stultz <johnstul@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>

So I don't think it's an hpet issue. :-)

I'm now going to revert that commit and see what happens.

Thanks,
Rafael
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