linux-kernel - Re: [PATCH] modules: Use a better scheme for refcounting

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Message-ID: <87ej83z0va.fsf@basil.nowhere.org>
Date:	Thu, 15 May 2008 23:57:45 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Eric Dumazet <dada1@...mosbay.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Rusty Russell <rusty@...tcorp.com.au>,
	linux kernel <linux-kernel@...r.kernel.org>,
	Mike Travis <travis@....com>
Subject: Re: [PATCH] modules: Use a better scheme for refcounting

Eric Dumazet <dada1@...mosbay.com> writes:
> Instead of wasting NR_CPUS*128 bytes (on i386), we now use
> num_possible_cpus*sizeof(local_t) bytes.
>
> On a typical distro, where NR_CPUS=8, 

More typical would be NR_CPUS=128, with NR_CPUS=four digits 
when Mike Travis et.al. are finished

> shiping 2000 modules, we reduce

Surely only the loaded modules count? Perhaps 20-30.

But it's a cool improvement. Very nice.

-Andi
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