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| author | Christoph Lameter <christoph@lameter.com> | 2005-06-23 00:08:18 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-06-23 09:45:08 -0700 |
| commit | 8c5a09082f4e61a176382e96a831a0636b918602 (patch) | |
| tree | 89a7086ebbec9d94dc7b7b3483d3750220ba979c /include/asm-x86_64/topology.h | |
| parent | e164f5573bef0e6caf53519719cf0228c9c15ce3 (diff) | |
| download | kernel_samsung_aries-8c5a09082f4e61a176382e96a831a0636b918602.zip kernel_samsung_aries-8c5a09082f4e61a176382e96a831a0636b918602.tar.gz kernel_samsung_aries-8c5a09082f4e61a176382e96a831a0636b918602.tar.bz2 | |
[PATCH] x86/x86_64: pcibus_to_node
Define pcibus_to_node to be able to figure out which NUMA node contains a
given PCI device. This defines pcibus_to_node(bus) in
include/linux/topology.h and adjusts the macros for i386 and x86_64 that
already provided a way to determine the cpumask of a pci device.
x86_64 was changed to not build an array of cpumasks anymore. Instead an
array of nodes is build which can be used to generate the cpumask via
node_to_cpumask.
Signed-off-by: Christoph Lameter <christoph@lameter.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-x86_64/topology.h')
| -rw-r--r-- | include/asm-x86_64/topology.h | 14 |
1 files changed, 3 insertions, 11 deletions
diff --git a/include/asm-x86_64/topology.h b/include/asm-x86_64/topology.h index da21573..8f77e9f 100644 --- a/include/asm-x86_64/topology.h +++ b/include/asm-x86_64/topology.h @@ -13,8 +13,8 @@ extern cpumask_t cpu_online_map; extern unsigned char cpu_to_node[]; +extern unsigned char pci_bus_to_node[]; extern cpumask_t node_to_cpumask[]; -extern cpumask_t pci_bus_to_cpumask[]; #ifdef CONFIG_ACPI_NUMA extern int __node_distance(int, int); @@ -26,16 +26,8 @@ extern int __node_distance(int, int); #define parent_node(node) (node) #define node_to_first_cpu(node) (__ffs(node_to_cpumask[node])) #define node_to_cpumask(node) (node_to_cpumask[node]) - -static inline cpumask_t __pcibus_to_cpumask(int bus) -{ - cpumask_t busmask = pci_bus_to_cpumask[bus]; - cpumask_t online = cpu_online_map; - cpumask_t res; - cpus_and(res, busmask, online); - return res; -} -#define pcibus_to_cpumask(bus) __pcibus_to_cpumask(bus->number) +#define pcibus_to_node(bus) pci_bus_to_node[(bus)->number] +#define pcibus_to_cpumask(bus) node_to_cpumask(pcibus_to_node(bus)); /* sched_domains SD_NODE_INIT for x86_64 machines */ #define SD_NODE_INIT (struct sched_domain) { \ |