From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stephen Rothwell <sfr@canb.auug.org.au>
Subject: linux-next: build failure after merge of the percpu tree
Date: Fri, 10 Sep 2010 12:45:43 +1000
Message-ID: <20100910124543.3e8604fd.sfr@canb.auug.org.au>
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To: Tejun Heo <tj@kernel.org>, Rusty Russell <rusty@rustcorp.com.au>, Christoph Lameter <cl@linux-foundation.org>, Ingo Molnar <mingo@elte.hu>
Cc: linux-next@vger.kernel.org, linux-kernel@vger.kernel.org, Brian Gerst <brgerst@gmail.com>

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Hi all,

After merging the percpu tree, today's linux-next build (x86_64
allmodconfig) failed like this:

In file included from drivers/vhost/net.c:26:
include/linux/if_macvlan.h: In function 'macvlan_count_rx':
include/linux/if_macvlan.h:69: error: read-only variable 'tcp_ptr__' used a=
s 'asm' output
In file included from drivers/net/macvlan.c:30:
include/linux/if_macvlan.h: In function 'macvlan_count_rx':
include/linux/if_macvlan.h:69: error: read-only variable 'tcp_ptr__' used a=
s 'asm' output
In file included from drivers/net/macvtap.c:2:
include/linux/if_macvlan.h: In function 'macvlan_count_rx':
include/linux/if_macvlan.h:69: error: read-only variable 'tcp_ptr__' used a=
s 'asm' output

Caused by commit 7f56c13698abfb1bdf6cf2b5cfcd80626d44c12e ("x86, percpu:
Optimize this_cpu_ptr").

That line in if_macvlan.h is:

	rx_stats =3D this_cpu_ptr(vlan->rx_stats);

Where vlan is a "const struct macvlan_dev *".

I have used the percpu tree from next-20100909 for today.
--=20
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/

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