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

From: Stephen Rothwell <[email-masked]>
Date: Fri, 10 Sep 2010 12:45:43 +1000

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                    [email-masked]
http://www.canb.auug.org.au/~sfr/