diff options
| author | Anton Blanchard <anton@samba.org> | 2010-01-06 07:55:12 +0300 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2010-01-07 02:47:57 +0300 |
| commit | 1d1e9f04216b379000128392b11edd7f5d0ebed1 (patch) | |
| tree | 450002f3d4defb270aa150df1dccf123cd3b0844 /arch/ia64 | |
| parent | c6f7afaeeda5b3c42ea8d7b27e197d223a04675e (diff) | |
| download | linux-1d1e9f04216b379000128392b11edd7f5d0ebed1.tar.xz | |
[IA64] 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>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64')
| -rw-r--r-- | arch/ia64/include/asm/topology.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/ia64/include/asm/topology.h b/arch/ia64/include/asm/topology.h index 3ddb4e709dba..d323071d0f91 100644 --- a/arch/ia64/include/asm/topology.h +++ b/arch/ia64/include/asm/topology.h @@ -33,7 +33,9 @@ /* * Returns a bitmask of CPUs on Node 'node'. */ -#define cpumask_of_node(node) (&node_to_cpu_mask[node]) +#define cpumask_of_node(node) ((node) == -1 ? \ + cpu_all_mask : \ + &node_to_cpu_mask[node]) /* * Returns the number of the node containing Node 'nid'. |