linux-kernel - Re: [PATCH] maximum latency tracking infrastructure (version 3)

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Message-ID: <p73bqq47rlp.fsf@verdi.suse.de>
Date:	28 Aug 2006 18:27:46 +0200
From:	Andi Kleen <ak@...e.de>
To:	Arjan van de Ven <arjan@...ux.intel.com>
Cc:	linux-kernel@...r.kernel.org, akpm@...l.org, mingo@...e.hu,
	jesse.barnes@...el.com, dwalker@...sta.com,
	andi@...x01.fht-esslingen.de
Subject: Re: [PATCH] maximum latency tracking infrastructure (version 3)

Arjan van de Ven <arjan@...ux.intel.com> writes:
> 
> I could have sworn there was an idle call notifier already\
> 
> ah there is on x86-64 but it is architecture specific...

The original implementation was on s390. But they're not really
designed for doing anything slow, so I wouldn't recommend using
them in drivers unless it's very fast.

-Andi
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