linux-kernel - Re: [PATCH v3 10/11] perf/x86/intel: Perform rotation on Intel CQM RMIDs

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Date:	Tue, 11 Nov 2014 10:37:19 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Matt Fleming <matt@...sole-pimps.org>
Cc:	Ingo Molnar <mingo@...nel.org>, Jiri Olsa <jolsa@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Andi Kleen <andi@...stfloor.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	linux-kernel@...r.kernel.org, "H. Peter Anvin" <hpa@...or.com>,
	Kanaka Juvva <kanaka.d.juvva@...el.com>,
	Matt Fleming <matt.fleming@...el.com>
Subject: Re: [PATCH v3 10/11] perf/x86/intel: Perform rotation on Intel CQM
 RMIDs

On Mon, Nov 10, 2014 at 09:31:40PM +0000, Matt Fleming wrote:
> Actually, yeah, that does look like it'd work. Are you OK with me adding
> an enum to the cqm_rmid_entry? You had concerns in the past about
> growing the size of the struct.

That was because I was thinking you did nr_rmid*sizeof(cqm_rmid_entry)
allocation, shortly thereafter I noticed you did a pointer alloc and
then allocated each individual entry.

Also, that enum can fit the hole you made there I think.
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