linux-kernel - Re: Perf trace event parse errors for KVM events

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Date:	Sun, 30 May 2010 17:07:45 +0300
From:	Avi Kivity <avi@...hat.com>
To:	rostedt@...dmis.org
CC:	Stefan Hajnoczi <stefanha@...il.com>,
	linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
	kvm@...r.kernel.org, Frederic Weisbecker <fweisbec@...il.com>,
	Marcelo Tosatti <mtosatti@...hat.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Stefan Hajnoczi <stefanha@...ux.vnet.ibm.com>,
	Johannes Berg <johannes.berg@...el.com>,
	Darren Hart <darren@...art.com>
Subject: Re: Perf trace event parse errors for KVM events

On 05/30/2010 05:03 PM, Steven Rostedt wrote:
>
>> Right.  The tools can fall back to %x/%s based on the structure
>> descriptor if they can't parse the format string.
>>
>>      
> trace-cmd has plugin support to override how to read the format and
> print it out. It now has the ability to write those plugins in python.
>    

Cool.  May make sense to use simpler formatting in the kernel, and use 
trace-cmd plugins for the complicated cases.

It does raise issues with ABIs.  Can trace-cmd read plugins from 
/lib/modules/*?  We can then distribute the plugins with the kernel.

-- 
error compiling committee.c: too many arguments to function

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