Re: [URGENT rfc patch 0/3] tsc clocksource bug fix

From: Thomas Gleixner
Date: Fri Jul 05 2013 - 01:59:15 EST


On Fri, 5 Jul 2013, Alex Shi wrote:
> On 07/05/2013 04:27 AM, Thomas Gleixner wrote:
> >>>> We find some benchmarks drop a lot on tip/sched/core on many Intel boxes,
> > And that branch does NOT have that commit included. So how can you see
> > a regression on a branch caused by a commit NOT included into that
> > branch?
> >
> > The offending commit is in tip timers/core and not in tip
> > sched/core. What I'm wanted to say is, that we need a proper
> > description of problems and not some random association.
> >
> > It tricked you to assume, that I'm not able to figure it out myself :)
> >
> > See? These things are complex and subtle, so we need precise
> > descriptions and not some sloppy semi correct data.
> >
> > I'm well aware of the issue and with Peters help I got a reasonable
> > explanation for it. A proper fix is about to be sent out.
> >
>
> Ingo had merged your branch into sched/core. :)
>
> commit f9bed7021710a3e45c331f7d7781de914cc1b939
> Merge: 7e76057 67dd331
> Author: Ingo Molnar <mingo@xxxxxxxxxx>
> Date: Wed May 29 11:21:59 2013 +0200
>
> Merge branch 'timers/urgent'

Not really.

tip$ git branch --contains f9bed70217
* master

tip$ git branch --contains 5d33b883ae
* master
timers/core

So you are testing tip/master not tip/sched/core.

Thanks,

tglx
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