linux-kernel - Re: [GIT PULL] oprofile fixes for v3.0

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Message-ID: <20110621201840.GA27982@elte.hu>
Date:	Tue, 21 Jun 2011 22:18:40 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Robert Richter <robert.richter@....com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"oprofile-list@...ts.sourceforge.net" 
	<oprofile-list@...ts.sourceforge.net>
Subject: Re: [GIT PULL] oprofile fixes for v3.0


* Robert Richter <robert.richter@....com> wrote:

> On 21.06.11 09:03:08, Ingo Molnar wrote:
> > 
> > Robert,
> > 
> > * Robert Richter <robert.richter@....com> wrote:
> > 
> > > Ingo,
> > > 
> > > please pull oprofile fixes for v3.0 (tip/perf/urgent):
> > > 
> > >  git://git.kernel.org/pub/scm/linux/kernel/git/rric/oprofile.git urgent
> > > 
> > > Thanks,
> > > 
> > > -Robert
> > > 
> > > 
> > > The following changes since commit 2c53b436a30867eb6b47dd7bab23ba638d1fb0d2:
> > > 
> > >   Linux 3.0-rc3 (2011-06-13 15:29:59 -0700)
> > > 
> > > are available in the git repository at:
> > >   git://git.kernel.org/pub/scm/linux/kernel/git/rric/oprofile.git urgent
> > > 
> > > Robert Richter (2):
> > >       oprofile, x86: Fix race in nmi handler while starting counters
> > >       oprofile, x86: Fix nmi-unsafe callgraph support
> > > 
> > >  arch/x86/oprofile/backtrace.c |   56 ++++++++++++++++++++++++++++++++++------
> > >  arch/x86/oprofile/nmi_int.c   |   14 +++++++---
> > >  2 files changed, 57 insertions(+), 13 deletions(-)
> > 
> > Since when has NMI callgraph support been broken?
> 
> I think it never worked correct. But the patch can be backported 
> without conflicts/reworks only for .37 stable kernel. Do you rather 
> like to take it for v3.1?

Yeah, v3.1 would be fine - if it was broken for like 5-10 years then 
it's not eligible for -rc5. The linecount is very high as well, it's 
definitely not a oneliner fix ...

Thanks,

	Ingo
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