[IA64] pcibus_to_node implementation for IA64
pcibus_to_node provides a way for the Linux kernel to identify to which
node a certain pcibus connects to. Allocations of control structures
for devices can then be made on the node where the pci bus is located
to allow local access during interrupt and other device manipulation.
This patch provides a new "node" field in the the pci_controller
structure. The node field will be set based on ACPI information (thanks
to Alex Williamson <alex.williamson@hp.com for that piece).
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
diff --git a/include/asm-ia64/topology.h b/include/asm-ia64/topology.h
index 4e64c2a..399bc29 100644
--- a/include/asm-ia64/topology.h
+++ b/include/asm-ia64/topology.h
@@ -40,6 +40,11 @@
*/
#define node_to_first_cpu(node) (__ffs(node_to_cpumask(node)))
+/*
+ * Determines the node for a given pci bus
+ */
+#define pcibus_to_node(bus) PCI_CONTROLLER(bus)->node
+
void build_cpu_to_node_map(void);
#define SD_CPU_INIT (struct sched_domain) { \