linux-kernel - Re: [PATCH v1 1/1] Extended events (platform-specific) support in perf

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Date:	Wed, 27 Jan 2010 12:35:23 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Tomasz Fujak <t.fujak@...sung.com>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	acme@...hat.com, jamie.iles@...ochip.com, will.deacon@....com,
	jpihet@...sta.com, mingo@...e.hu, p.osciak@...sung.com,
	m.szyprowski@...sung.com, kyungmin.park@...sung.com
Subject: Re: [PATCH v1 1/1] Extended events (platform-specific) support in
 perf

On Fri, 2010-01-22 at 13:08 +0100, Tomasz Fujak wrote:

there's supposed to be a changelog here...

> Signed-off-by: Tomasz Fujak <t.fujak@...sung.com>
> Reviewed-by: Pawel Osciak <p.osciak@...sung.com>
> Reviewed-by: Marek Szyprowski <m.szyprowski@...sung.com>
> Reviewed-by: Kyungmin Park <kuyngmin.park@...sung.com>

Surely one of you knew that ;-)

Anyway, I still think it stinks, and as pointed out, it violates the
one-value-per-file sysfs rule.

I really see no reason why you cannot do this in userspace, have
tools/perf/ provide a library that does this for all supported platforms
with a common interface or something.



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