linux-kernel - Re: Value of __*{init,exit} anotations?

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Message-Id: <200801310642.54632.ak@suse.de>
Date:	Thu, 31 Jan 2008 06:42:54 +0100
From:	Andi Kleen <ak@...e.de>
To:	Adrian Bunk <bunk@...nel.org>
Cc:	James Bottomley <James.Bottomley@...senpartnership.com>,
	Sam Ravnborg <sam@...nborg.org>, davem@...emloft.net,
	linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arch@...r.kernel.org,
	"Maciej W. Rozycki" <macro@...ux-mips.org>
Subject: Re: Value of __*{init,exit} anotations?


> Some people consider it worth it for their memory restricted systems
> and would like to drive the annotations even further. [1]

They could get much better bang-for-the-buck (as in memory saved
for amount of work invested) by tackling some the dynamic memory allocation
pigs.

In general it's a trade off between how much work and patch churn versus
benefit, and some of the annotations really don't look too good on this
scale.

> People at linux-arch (Cc'ed) might be better at explaining how often 
> CONFIG_HOTPLUG gets used in real-life systems and how big the savings 
> are there.

CONFIG_HOTPLUG is widely used for suspend on multi core systems. 

-Andi
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