linux-kernel - Re: perf_counter: hook up the tracepoint events

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Message-ID: <4A6F9F51.4010107@garzik.org>
Date:	Tue, 28 Jul 2009 21:01:05 -0400
From:	Jeff Garzik <jeff@...zik.org>
To:	mingo@...hat.com, hpa@...or.com, a.p.zijlstra@...llo.nl,
	tglx@...utronix.de, mingo@...e.hu
CC:	paulus@...ba.org, linux-kernel@...r.kernel.org,
	rostedt@...dmis.org, linux-tip-commits@...r.kernel.org
Subject: Re: perf_counter: hook up the tracepoint events

Peter Zijlstra wrote:
> diff --git a/init/Kconfig b/init/Kconfig
> index 8a38443..761129a 100644
> --- a/init/Kconfig
> +++ b/init/Kconfig
> @@ -945,6 +945,11 @@ config PERF_COUNTERS
>  
>  	  Say Y if unsure.
>  
> +config EVENT_PROFILE
> +	bool "Tracepoint profile sources"
> +	depends on PERF_COUNTERS && EVENT_TRACER
> +	default y
> +
>  endmenu

Adding help text would be... helpful.   :)

The net result in this case was the addition of a completely-unexplained 
Kconfig option late in 2.6.31-rc.

Maybe the x86 maintainers could help see that they don't push 
unexplained Kconfig options upstream -- particularly ones we are asked 
to enable by default?

	Jeff



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