linux-kernel - Re: [patch 0/3] [Announcement] Performance Counters for Linux

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Message-ID: <20081210102335.GA30942@linux-sh.org>
Date:	Wed, 10 Dec 2008 19:23:36 +0900
From:	Paul Mundt <lethal@...ux-sh.org>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	David Miller <davem@...emloft.net>, mingo@...e.hu,
	a.p.zijlstra@...llo.nl, paulus@...ba.org, tglx@...utronix.de,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
	akpm@...ux-foundation.org, eranian@...glemail.com,
	dada1@...mosbay.com, robert.richter@....com, arjan@...radead.org,
	hpa@...or.com, rostedt@...dmis.org
Subject: Re: [patch 0/3] [Announcement] Performance Counters for Linux

On Wed, Dec 10, 2008 at 11:28:19AM +0100, Andi Kleen wrote:
> > Oprofile has been a pretty bad fit for them, and while I'm slightly more
> 
> You could always use a extension of timer mode that reads them
> periodically? 
> 
This is what I do today, but it is not an ideal solution. It would be
nice if these sorts of use cases could be supported by newer frameworks
without every platform with similar requirements having to implement
workarounds hanging off of the timer IRQ.
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