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| author | Anton Blanchard <anton@samba.org> | 2010-01-06 15:55:13 +1100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2010-01-12 18:19:37 +0100 |
| commit | d797396f3387c5be8f63fcc8e9be98bb884ea86a (patch) | |
| tree | 63024f12dfb080db7d8fbc73776f1bbdc68bbf7f /arch/mips/include/asm/mach-ip27 | |
| parent | 0e8a1d8262f41d6e8c1d736a408882bbb7a5c0a6 (diff) | |
| download | blackbird-op-linux-d797396f3387c5be8f63fcc8e9be98bb884ea86a.tar.gz blackbird-op-linux-d797396f3387c5be8f63fcc8e9be98bb884ea86a.zip | |
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>
Diffstat (limited to 'arch/mips/include/asm/mach-ip27')
| -rw-r--r-- | arch/mips/include/asm/mach-ip27/topology.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/mips/include/asm/mach-ip27/topology.h b/arch/mips/include/asm/mach-ip27/topology.h index 09a59bcc1b07..1b1a7d1632b9 100644 --- a/arch/mips/include/asm/mach-ip27/topology.h +++ b/arch/mips/include/asm/mach-ip27/topology.h @@ -24,7 +24,9 @@ extern struct cpuinfo_ip27 sn_cpu_info[NR_CPUS]; #define cpu_to_node(cpu) (sn_cpu_info[(cpu)].p_nodeid) #define parent_node(node) (node) -#define cpumask_of_node(node) (&hub_data(node)->h_cpus) +#define cpumask_of_node(node) ((node) == -1 ? \ + cpu_all_mask : \ + &hub_data(node)->h_cpus) struct pci_bus; extern int pcibus_to_node(struct pci_bus *); |
