Re: 2.6.16-rc6-rt7

[Thomas Gleixner <tglx@linutronix.de>]

On Sat, 2006-03-18 at 05:54 -0700, Tom Rini wrote:
> On Sat, Mar 18, 2006 at 11:37:19AM +0100, Thomas Gleixner wrote:
> > On Fri, 2006-03-17 at 16:36 -0700, Tom Rini wrote:
> > > On Thu, Mar 16, 2006 at 10:56:08AM +0100, Ingo Molnar wrote:
> > > 
> > > > i have released the 2.6.16-rc6-rt7 tree, which can be downloaded from 
> > > > the usual place:
> > > > 
> > > >    http://redhat.com/~mingo/realtime-preempt/
> > > 
> > > I was wondering, is it normal for the nanosleep02 and alarm02 LTP tests
> > > to fail?  For sometime I've seen these tests fail from time to time with
> > > the -RT patch but not the regular kernel.
> > 
> > The nanosleep02 failure is incorrect due to rounding errors in the test
> > code.
> [snip]
> > This never happens on vanilla, as the nanosleep is rounded to the next
> > jiffie. -rt has high resolution timers which are delivered accurate, so
> > the rounding errors of the testcode surface.
> 
> Thanks!  Any ideas about the alarm02 test?

Yes. Its due (unsigned int) -> long conversion and a missing check.

That one affects mainline as well. I'm fixing this one right now. Patch
follows.

	tglx