linux-kernel - Re: [PATCH 08/10] perf_event: Optimize the constraint searching bits

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Date:	Fri, 22 Jan 2010 17:22:33 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Stephane Eranian <eranian@...gle.com>
Cc:	fweisbec@...il.com, paulus@...ba.org, mingo@...e.hu,
	davem@...emloft.net, robert.richter@....com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 08/10] perf_event: Optimize the constraint searching
 bits

On Fri, 2010-01-22 at 17:08 +0100, Stephane Eranian wrote:
> On Fri, Jan 22, 2010 at 4:50 PM, Peter Zijlstra <a.p.zijlstra@...llo.nl> wrote:
> > Instead of copying bitmasks around, pass pointers to the constraint structure.
> >
> The reason I changed that is because of the AMD situation where constraints
> are dynamically generated. So we need to get some storage from somwhere.
> See my AMD NB patch,

Can't we still do that by embedding 4 event_constraint structures in
struct amd_nb and rewriting those as we need?



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