Date: Tue, 28 Apr 2009 06:43:40 -0700 (PDT)
Message-Id: <20090428.064340.193569214.davem@davemloft.net>
To: mingo@elte.hu
Cc: dada1@cosmosbay.com, torvalds@linux-foundation.org, shemminger@vyatta.com,
       zbr@ioremap.net, peterz@infradead.org, mathieu.desnoyers@polymtl.ca,
       jarkao2@gmail.com, paulus@samba.org, paulmck@linux.vnet.ibm.com,
       kaber@trash.net, jeff.chua.linux@gmail.com, laijs@cn.fujitsu.com,
       jengelh@medozas.de, r000n@r000n.net, linux-kernel@vger.kernel.org,
       netfilter-devel@vger.kernel.org, netdev@vger.kernel.org,
       benh@kernel.crashing.org
Subject: Re: [PATCH] netfilter: use per-CPU r**ursive lock {XV}
From: David Miller <davem@davemloft.net>
In-Reply-To: <20090428124033.GA1655@elte.hu>
References: <49F6A8FD.3010804@cosmosbay.com>
	<20090428.045342.206106171.davem@davemloft.net>
	<20090428124033.GA1655@elte.hu>
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From: Ingo Molnar <mingo@elte.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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