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authorChristoph Lameter <clameter@sgi.com>2005-07-07 16:59:00 -0700
committerTony Luck <tony.luck@intel.com>2005-07-12 11:04:22 -0700
commit514604c6d1779c55d3e97dc4e9a71c117c1ccbcd (patch)
tree19241b4db64f1da60c0dd594606c5d5fba8b254f /include/asm-ia64
parent1604d9c8f8dffafe3a077dc5ae7c935d2318bcf6 (diff)
[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>
Diffstat (limited to 'include/asm-ia64')
-rw-r--r--include/asm-ia64/pci.h1
-rw-r--r--include/asm-ia64/topology.h5
2 files changed, 6 insertions, 0 deletions
diff --git a/include/asm-ia64/pci.h b/include/asm-ia64/pci.h
index 0c4c5d801d3..8b7237cc84c 100644
--- a/include/asm-ia64/pci.h
+++ b/include/asm-ia64/pci.h
@@ -128,6 +128,7 @@ struct pci_controller {
void *acpi_handle;
void *iommu;
int segment;
+ int node; /* nearest node with memory or -1 for global allocation */
unsigned int windows;
struct pci_window *window;
diff --git a/include/asm-ia64/topology.h b/include/asm-ia64/topology.h
index 4e64c2a6b36..399bc29729f 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) { \