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| author |   Anton Blanchard <anton@samba.org> | 2010-01-06 04:55:14 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2010-01-20 19:04:42 -0800 |
| commit | e5981fd6d77c63c003cac44ab52da72994e7ead3 (patch) | |
| tree | 6eacba7c57e63779eb24f01060d7826bd4c659e7 /arch/sparc/include | |
| parent | sparc64: Update defconfig. (diff) | |
| download | linux-dev-e5981fd6d77c63c003cac44ab52da72994e7ead3.tar.xz linux-dev-e5981fd6d77c63c003cac44ab52da72994e7ead3.zip | |
sparc: 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: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/include')
| -rw-r--r-- | arch/sparc/include/asm/topology_64.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/sparc/include/asm/topology_64.h b/arch/sparc/include/asm/topology_64.h index 600a79035fa1..1c79f32734a0 100644 --- a/arch/sparc/include/asm/topology_64.h +++ b/arch/sparc/include/asm/topology_64.h @@ -12,7 +12,9 @@ static inline int cpu_to_node(int cpu) #define parent_node(node) (node) -#define cpumask_of_node(node) (&numa_cpumask_lookup_table[node]) +#define cpumask_of_node(node) ((node) == -1 ? \ + cpu_all_mask : \ + &numa_cpumask_lookup_table[node]) struct pci_bus; #ifdef CONFIG_PCI |