linux-kernel - Re: [PATCH v2 02/11] perf core: export swevent hrtimer helpers

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Message-ID: <20140225102008.GI9987@twins.programming.kicks-ass.net>
Date:	Tue, 25 Feb 2014 11:20:08 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Michael Ellerman <mpe@...erman.id.au>
Cc:	Cody P Schafer <cody@...ux.vnet.ibm.com>,
	Linux PPC <linuxppc-dev@...ts.ozlabs.org>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Ingo Molnar <mingo@...hat.com>,
	Paul Mackerras <paulus@...ba.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 02/11] perf core: export swevent hrtimer helpers

On Tue, Feb 25, 2014 at 02:33:26PM +1100, Michael Ellerman wrote:
> On Fri, 2014-14-02 at 22:02:06 UTC, Cody P Schafer wrote:
> > Export the swevent hrtimer helpers currently only used in events/core.c
> > to allow the addition of architecture specific sw-like pmus.
> 
> Peter, Ingo, can we get your ACK on this please?

How are they used? I saw some usage in patch 9 or so; but its not
explained anywhere. All patches have non-existent Changelogs and the few
comments that are there are pretty hardware specific.

So please do tell; what do you need this for?


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