linux-kernel - linux-next: build failure after merge of the percpu tree

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Date:	Fri, 10 Sep 2010 12:45:43 +1000
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Tejun Heo <tj@...nel.org>, Rusty Russell <rusty@...tcorp.com.au>,
	Christoph Lameter <cl@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Brian Gerst <brgerst@...il.com>
Subject: linux-next: build failure after merge of the percpu tree

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 as '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 as '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 as 'asm' output

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

That line in if_macvlan.h is:

	rx_stats = 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.
-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au
http://www.canb.auug.org.au/~sfr/

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