linux-kernel - Re: [PATCH] tracing, perf: add more power related events

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Message-ID: <AANLkTinrRoi6y1fKUevu2O-Diac5B2r8RftTWUigQZOh@mail.gmail.com>
Date:	Mon, 6 Sep 2010 10:56:50 +0200
From:	Jean Pihet <jean.pihet@...oldbits.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Arjan van de Ven <arjan@...ux.intel.com>,
	Thomas Renninger <trenn@...e.de>,
	Peter Zijlstra <peterz@...radead.org>,
	Len Brown <len.brown@...el.com>, arjan@...radead.org,
	Kevin Hilman <khilman@...prootsystems.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] tracing, perf: add more power related events

Hi,

Thanks for the feedback!

> On Friday 03 September 2010 21:55:55 Ingo Molnar wrote:
>Well, the patch that got posted:
>
> [PATCH] tracing, perf: add more power related events
>
>Only adds tracepoints to power.h, but doesnt actually use them anywhere
>...
>
>Is there a companion patch i missed?
I will re-start a thread with the full patch and with both lkml and
linux-omap in Cc.

>Also, it would be nice to add it to x86 and to OMAP at once, and
>synchronize up all the power events - and check how existing tools like
>powertop make use of such events - and sync it all up. We dont want to
>have inconsistent, architecture-dependent events in the end, for obvious
>reasons.
Indeed that is the idea to sync up all power events. Other new events
will follow shortly, e.g. low power transitions latency profiling etc.

Wrt the tools, I would be glad to contribute to the tools. I already
have local patches to pytimechart. Other tools like powertop,
cpufrequtils can be patched as well.

Thanks,
Jean
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