linux-kernel - Re: [PATCH v4 10/11] perf/x86/intel: Perform rotation on Intel CQM RMIDs

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Message-ID: <20150106161327.GG3337@twins.programming.kicks-ass.net>
Date:	Tue, 6 Jan 2015 17:13:27 +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 v4 10/11] perf/x86/intel: Perform rotation on Intel CQM
 RMIDs

On Fri, Nov 14, 2014 at 09:15:11PM +0000, Matt Fleming wrote:
> +enum rmid_recycle_state {
> +	RMID_YOUNG = 0,
> +	RMID_AVAILABLE,
> +	RMID_DIRTY,
> +};
> +
>  struct cqm_rmid_entry {
> -	u64 rmid;
> +	unsigned int rmid;
>  	struct list_head list;
> +	unsigned long queue_time;
> +	enum rmid_recycle_state state;
>  };

You probably want that enum after rmid to better pack the structure.
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