linux-kernel - Re: [PATCH 3/8] percpu: add __percpu sparse annotations to net

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Date:	Mon, 25 Jan 2010 13:32:47 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	tj@...nel.org
Cc:	linux-kernel@...r.kernel.org, axboe@...nel.dk,
	rusty@...tcorp.com.au, akpm@...ux-foundation.org,
	ebiederm@...ssion.com, tytso@....edu, Trond.Myklebust@...app.com,
	aelder@....com, hch@...radead.org, viro@...iv.linux.org.uk,
	netdev@...r.kernel.org, x86@...nel.org, mingo@...hat.com,
	fweisbec@...il.com, dan.j.williams@...el.com,
	borislav.petkov@....com, ying.huang@...el.com, lenb@...nel.org,
	neilb@...e.de, cl@...ux-foundation.org, kaber@...sh.net,
	acme@...stprotocols.net, vladislav.yasevich@...com
Subject: Re: [PATCH 3/8] percpu: add __percpu sparse annotations to net

From: Tejun Heo <tj@...nel.org>
Date: Tue, 26 Jan 2010 00:22:10 +0900

> Add __percpu sparse annotations to net.
> 
> These annotations are to make sparse consider percpu variables to be
> in a different address space and warn if accessed without going
> through percpu accessors.  This patch doesn't affect normal builds.
> 
> The macro and type tricks around snmp stats make things a bit
> interesting.  DEFINE/DECLARE_SNMP_STAT() macros mark the target field
> as __percpu and SNMP_UPD_PO_STATS() macro is updated accordingly.  All
> snmp_mib_*() users which used to cast the argument to (void **) are
> updated to cast it to (void __percpu **).
> 
> Signed-off-by: Tejun Heo <tj@...nel.org>

Acked-by: David S. Miller <davem@...emloft.net>
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