netdev - Re: [PATCH] INET : removes per bucket rwlock in tcp/dccp ehash table

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Message-ID: <472DC38B.5060208@cosmosbay.com>
Date:	Sun, 04 Nov 2007 14:05:15 +0100
From:	Eric Dumazet <dada1@...mosbay.com>
To:	Andi Kleen <ak@...e.de>
CC:	David Miller <davem@...emloft.net>, netdev@...r.kernel.org,
	acme@...hat.com, Jarek Poplawski <jarkao2@...pl>
Subject: Re: [PATCH] INET : removes per bucket rwlock in tcp/dccp ehash table

Andi Kleen a écrit :
>> But I suspect distributions kernels enable CONFIG_HOTPLUG_CPU so 
>> num_possible_cpus() will be NR_CPUS.
> 
> Nope, on x86 num_possible_cpus() is derived from BIOS tables these days.

Good to know, thank you Andi for this clarification.

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