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

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Date:	Wed, 22 Apr 2009 12:19:11 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Robert Richter <robert.richter@....com>
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


* Robert Richter <robert.richter@....com> wrote:

> 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).

Yeah. I'd have suggested that once cleanups and unification is done 
(which is still a long way out :-).

	Ingo
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