Re: [RFC PATCH] perf_core: provide a kernel-internal interface toget to performance counters

From: Frederic Weisbecker
Date: Sat Feb 06 2010 - 06:46:54 EST


On Fri, Feb 05, 2010 at 10:24:30PM -0800, Arjan van de Ven wrote:
> On Fri, 5 Feb 2010 10:47:48 -0500
> Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote:
>
> > On Fri, Sep 25, 2009 at 12:25:56PM +0200, Arjan van de Ven wrote:
> > > >From 5db5cd76f3c16c9f6093f54d1ccfb97d04b9a1ca Mon Sep 17 00:00:00
> > > >2001
> > > From: Arjan van de Ven <arjan@xxxxxxxxxxxxxxx>
> > > Date: Fri, 25 Sep 2009 12:20:57 +0200
> > > Subject: [PATCH] perf_core: provide a kernel-internal interface to
> > > get to performance counters
> >
> > So this patch got accepted into mainline a while ago, without a user
> > ever beeing presented, nevermind actually included in mainline. Time
> > to revert providing these useless exports and dead code?
> >
>
>
> Frederic had a user near mainline.
>
> I have one but it's .35 material at this point...
>
> if you want to insist to bounce the patch out now and back in
> for .35... I don't care but Frederic might.


We can't.
It has a user merged upstream: the hw-breakpoint subsystem.

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