linux-kernel - Re: [PATCH] add i386 idle notifier (take 3)

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Message-Id: <20061220210514.42ed08cc.akpm@osdl.org>
Date:	Wed, 20 Dec 2006 21:05:14 -0800
From:	Andrew Morton <akpm@...l.org>
To:	eranian@....hp.com
Cc:	linux-kernel@...r.kernel.org, ak@...e.de
Subject: Re: [PATCH] add i386 idle notifier (take 3)

On Wed, 20 Dec 2006 06:05:00 -0800
Stephane Eranian <eranian@....hp.com> wrote:

> Hello,
> 
> Here is the latest version of the idle notifier for i386.
> This patch is against 2.6.20-rc1 (GIT). In this kernel, the idle
> loop code was modified such that the lowest level idle
> routines do not have loops anymore (e.g., poll_idle). As such,
> we do not need to call enter_idle() in all the interrupt handlers.
> 
> This patch also duplicates the x86-64 bug fix for a race condition
> as posted by Venkatesh Pallipadi from Intel.
> 
> changelog:
> 	- add idle notification mechanism to i386
> 

None of the above text is actually usable as a changelog entry.  We are
left wondering:

- why is this patch needed?

- what does it do?

- how does it do it?

The three questions which all changelogs should answer ;)
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