linux-kernel - Re: [PATCH] netfilter: use per-CPU r**ursive lock {XV}

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Message-Id: <20090428.064340.193569214.davem@davemloft.net>
Date:	Tue, 28 Apr 2009 06:43:40 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	mingo@...e.hu
Cc:	dada1@...mosbay.com, torvalds@...ux-foundation.org,
	shemminger@...tta.com, zbr@...emap.net, peterz@...radead.org,
	mathieu.desnoyers@...ymtl.ca, jarkao2@...il.com, paulus@...ba.org,
	paulmck@...ux.vnet.ibm.com, kaber@...sh.net,
	jeff.chua.linux@...il.com, laijs@...fujitsu.com,
	jengelh@...ozas.de, r000n@...0n.net, linux-kernel@...r.kernel.org,
	netfilter-devel@...r.kernel.org, netdev@...r.kernel.org,
	benh@...nel.crashing.org
Subject: Re: [PATCH] netfilter: use per-CPU r**ursive lock {XV}

From: Ingo Molnar <mingo@...e.hu>
Date: Tue, 28 Apr 2009 14:40:33 +0200

> IMHO this locking construct should be considered for 
> linux/local_lock.h and kernel/local_lock.c. Even if the netfilter 
> code drops its use soon afterwards ;-)

If you can show me have to pass a per-cpu variable (the variable,
not a dereference of it) as an argument to an inline function,
I'll implement this :-)

It has to be dereferenced after local_bh_disable() for the
read side acquisition.
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