linux-kernel - Re: [RFC 00/15] x86_64: Optimize percpu accesses

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Date:	Thu, 10 Jul 2008 12:12:58 -0700
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Christoph Lameter <cl@...ux-foundation.org>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	Ingo Molnar <mingo@...e.hu>, Mike Travis <travis@....com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jack Steiner <steiner@....com>, linux-kernel@...r.kernel.org,
	Arjan van de Ven <arjan@...radead.org>
Subject: Re: [RFC 00/15] x86_64: Optimize percpu accesses

Christoph Lameter <cl@...ux-foundation.org> writes:

> The patches are reasonably small. The problem that Mike seems to have is early
> boot debugging.

I didn't say small.  I said do one thing at a time.

Mike is addressing this.

Fundamentally the problem is that we are seeing weird failures and there is not
enough granularity in the patches to test which part of the patch the failure
comes from.

The fact that the failures happen early in boot just makes it worse to debug.

Eric

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