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authorChristoph Lameter <christoph@lameter.com>2005-06-23 00:08:18 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-23 09:45:08 -0700
commit8c5a09082f4e61a176382e96a831a0636b918602 (patch)
tree89a7086ebbec9d94dc7b7b3483d3750220ba979c /include/asm-x86_64/topology.h
parente164f5573bef0e6caf53519719cf0228c9c15ce3 (diff)
downloadlinux-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.h14
1 files changed, 3 insertions, 11 deletions
diff --git a/include/asm-x86_64/topology.h b/include/asm-x86_64/topology.h
index da21573ec731..8f77e9f6bc23 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) { \