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Subject: Re: [RFC PATCH 3/6] perf: Generalize some arch callchain code
From: Peter Zijlstra <peterz@infradead.org>
To: Frederic Weisbecker <fweisbec@gmail.com>
Cc: LKML <linux-kernel@vger.kernel.org>, Ingo Molnar <mingo@elte.hu>,
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Date: Thu, 01 Jul 2010 17:46:01 +0200
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On Thu, 2010-07-01 at 17:35 +0200, Frederic Weisbecker wrote:
> - Most archs use one callchain buffer per cpu, except x86 that needs
>   to deal with NMIs. Provide a default perf_callchain_buffer()
>   implementation that x86 overrides. 

sparc and power also have NMI like contexts.