Re: [PATCH 2/3] perf/x86/pebs: add workaround for broken OVFL status on HSW

From: Stephane Eranian
Date: Tue Mar 08 2016 - 15:59:59 EST


hi,

On Mon, Mar 7, 2016 at 12:25 PM, Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:
>
> On Mon, Mar 07, 2016 at 07:27:31PM +0100, Jiri Olsa wrote:
> > On Mon, Mar 07, 2016 at 01:18:40PM +0100, Peter Zijlstra wrote:
> > > On Mon, Mar 07, 2016 at 11:24:13AM +0100, Peter Zijlstra wrote:
> > >
> > > > I suspect Andi is having something along:
> > > >
> > > > lkml.kernel.org/r/1445458568-16956-1-git-send-email-andi@xxxxxxxxxxxxxx
> > > >
> > > > applied to his tree.
> > >
> > > OK, I munged a bunch of patches together, please have a hard look at the
> > > end result found in:
> > >
> > > git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git perf/core
> > >

I ran this kernel on Haswell. Even with Andi's fixes the problem I identified is
still there, so my patch is still needed.

>
> > >
> >
> > I needed declaration below to compile
>
> Yes indeed, (because Monday) I only compiled part of the patch series
> and then the build bot initial emails were all builds success.
>
> I have since fixed this (and gotten a fail email from the build bot).
>
> In any case, lots of fail, but it should be fixed if you've pulled from
> that git branch in the last 5 hours or so.