linux-kernel - Re: Re-implement MCE log ring buffer as per-CPU ring buffer

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Message-ID: <20090422101600.GL3226@erda.amd.com>
Date:	Wed, 22 Apr 2009 12:16:01 +0200
From:	Robert Richter <robert.richter@....com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Huang Ying <ying.huang@...el.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andi Kleen <ak@...ux.intel.com>, linux-kernel@...r.kernel.org,
	Hidetoshi Seto <seto.hidetoshi@...fujitsu.com>
Subject: Re: Re-implement MCE log ring buffer as per-CPU ring buffer

On 22.04.09 11:22:59, Ingo Molnar wrote:
> 
> * Huang Ying <ying.huang@...el.com> wrote:
> 
> > Re-implement MCE log ring buffer as per-CPU ring buffer for better 
> > scalability. Basic design is as follow:
> 
> Before changing anything substantial in the MCE code it would be 
> necessary to clean up and then unify the 32-bit and 64-bit side of 
> the MCE code first. (Which essentially means extending the 
> 64-bit-only code to 32-bit)

You may also want to consider to use the in-kernel ring_buffer api
(include/linux/ring_buffer.h).

-Robert

-- 
Advanced Micro Devices, Inc.
Operating System Research Center
email: robert.richter@....com

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