]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
MIPS: cpumask_of_node() should handle -1 as a node
authorAnton Blanchard <anton@samba.org>
Wed, 6 Jan 2010 04:55:13 +0000 (15:55 +1100)
committerRalf Baechle <ralf@linux-mips.org>
Tue, 12 Jan 2010 17:19:37 +0000 (18:19 +0100)
commitd797396f3387c5be8f63fcc8e9be98bb884ea86a
tree63024f12dfb080db7d8fbc73776f1bbdc68bbf7f
parent0e8a1d8262f41d6e8c1d736a408882bbb7a5c0a6
MIPS: cpumask_of_node() should handle -1 as a node

pcibus_to_node can return -1 if we cannot determine which node a pci bus
is on. If passed -1, cpumask_of_node will negatively index the lookup array
and pull in random data:

# cat /sys/devices/pci0000:00/0000:00:01.0/local_cpus
00000000,00000003,00000000,00000000
# cat /sys/devices/pci0000:00/0000:00:01.0/local_cpulist
64-65

Change cpumask_of_node to check for -1 and return cpu_all_mask in this
case:

# cat /sys/devices/pci0000:00/0000:00:01.0/local_cpus
ffffffff,ffffffff,ffffffff,ffffffff
# cat /sys/devices/pci0000:00/0000:00:01.0/local_cpulist
0-127

Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Andrew Morton <akpm@linux-foundation.org>
Patchwork: http://patchwork.linux-mips.org/patch/831/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
arch/mips/include/asm/mach-ip27/topology.h