linux-kernel - Re: [PATCH 2/2] x86, mce: Add persistent MCE event

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Date:	Fri, 23 Mar 2012 14:30:44 +0100
From:	Borislav Petkov <bp@...64.org>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	Borislav Petkov <bp@...64.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <peterz@...radead.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] x86, mce: Add persistent MCE event

On Fri, Mar 23, 2012 at 01:31:56PM +0100, Ingo Molnar wrote:
> Have you considered making the addition of persistent events
> straightforward and robust, in terms of adding a TRACE_EVENT() variant
> for them? It could replace the above code.

Err,

are you thinking of something in TRACE_EVENT() that sets
perf_event_attr.persistent to 1?

Btw, the more important question is are we going to need persistent
events that much so that a generic approach is warranted? I guess maybe
the black box events recording deal would be another user..

IOW, please elaborate :)

Thanks.

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Boris.

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