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From: Ingo Molnar <mingo@elte.hu>
To: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>,
	linux-kernel@vger.kernel.org,
	Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH] perfcounters: Make s/w counters in a group only count when group is on
Date: Sat, 14 Mar 2009 12:51:05 +0100	[thread overview]
Message-ID: <20090314115105.GC3805@elte.hu> (raw)
In-Reply-To: <18874.57621.950179.972863@cargo.ozlabs.ibm.com>


* Paul Mackerras <paulus@samba.org> wrote:

> Peter Zijlstra writes:
> 
> > The issue I have with your approach is two-fold:
> >  - it breaks the symmetry between software and hardware counters by
> >    treating them differently.
> 
> So... I was about to restore that symmetry by implementing 
> lazy PMU context switching.  [...]

That would be _really_ neat to have.

	Ingo

  reply	other threads:[~2009-03-14 11:51 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-03-13  1:59 Paul Mackerras
2009-03-13 10:23 ` Peter Zijlstra
2009-03-13 12:23   ` Paul Mackerras
2009-03-13 12:44     ` Peter Zijlstra
2009-03-13 13:04       ` Peter Zijlstra
2009-03-13 13:13         ` Ingo Molnar
2009-03-13 23:43           ` Paul Mackerras
2009-03-13 22:41       ` Paul Mackerras
2009-03-14 11:51         ` Ingo Molnar [this message]
2009-03-16  9:56         ` Peter Zijlstra
2009-03-16 10:33           ` Paul Mackerras

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