Subject: [GIT PULL] oprofile fixes for v3.0

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(-)


--
Advanced Micro Devices, Inc.
Operating System Research Center


2011-06-21 13:03:16

by Ingo Molnar

[permalink] [raw]
Subject: Re: [GIT PULL] oprofile fixes for v3.0


Robert,

* Robert Richter <[email protected]> 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?

Thanks,

Ingo

Subject: Re: [GIT PULL] oprofile fixes for v3.0

On 21.06.11 09:03:08, Ingo Molnar wrote:
>
> Robert,
>
> * Robert Richter <[email protected]> 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?

-Robert

--
Advanced Micro Devices, Inc.
Operating System Research Center

2011-06-21 20:18:49

by Ingo Molnar

[permalink] [raw]
Subject: Re: [GIT PULL] oprofile fixes for v3.0


* Robert Richter <[email protected]> wrote:

> On 21.06.11 09:03:08, Ingo Molnar wrote:
> >
> > Robert,
> >
> > * Robert Richter <[email protected]> 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

Subject: Re: [GIT PULL] oprofile fixes for v3.0

On 21.06.11 16:18:40, Ingo Molnar wrote:

> > 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 ...

Ingo,

I dropped this patch, there is only one fix now. Please pull again
from:

git://git.kernel.org/pub/scm/linux/kernel/git/rric/oprofile.git for-tip

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 for-tip

Robert Richter (1):
oprofile, x86: Fix race in nmi handler while starting counters

arch/x86/oprofile/nmi_int.c | 14 ++++++++++----
1 files changed, 10 insertions(+), 4 deletions(-)



--
Advanced Micro Devices, Inc.
Operating System Research Center