[PATCH 1/8] topology: Introduce cpu_node information for multi-node processors

Andreas Herrmann
2009-08-07T12:58:24Z

This includes
- cpu_node_id (id of the internal node)
- cpu_node_siblings and cpu_node_siblings_list
(siblings on the same internal node)

Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
---
drivers/base/topology.c | 10 ++++++++++
include/linux/topology.h | 9 +++++++++
2 files changed, 19 insertions(+), 0 deletions(-)

diff --git a/drivers/base/topology.c b/drivers/base/topology.c
index bf6b132..1e35a43 100644
--- a/drivers/base/topology.c
+++ b/drivers/base/topology.c
@@ -103,6 +103,9 @@ static ssize_t show_##name##_list(struct sys_device *dev, \
define_id_show_func(physical_package_id);
define_one_ro(physical_package_id);

+define_id_show_func(cpu_node_id);
+define_one_ro(cpu_node_id);
+
define_id_show_func(core_id);
define_one_ro(core_id);

@@ -110,6 +113,10 @@ define_siblings_show_func(thread_cpumask);
define_one_ro_named(thread_siblings, show_thread_cpumask);
define_one_ro_named(thread_siblings_list, show_thread_cpumask_list);

+define_siblings_show_func(cpu_node_cpumask);
+define_one_ro_named(cpu_node_siblings, show_cpu_node_cpumask);
+define_one_ro_named(cpu_node_siblings_list, show_cpu_node_cpumask_list);
+
define_siblings_show_func(core_cpumask);
define_one_ro_named(core_siblings, show_core_cpumask);
define_one_ro_named(core_siblings_list, show_core_cpumask_list);
@@ -119,6 +126,9 @@ static struct attribute *default_attrs[] = {
&attr_core_id.attr,
&attr_thread_siblings.attr,
&attr_thread_siblings_list.attr,
+ &attr_cpu_node_id.attr,
+ &attr_cpu_node_siblings.attr,
+ &attr_cpu_node_siblings_list.attr,
&attr_core_siblings.attr,
&attr_core_siblings_list.attr,
NULL
diff --git a/include/linux/topology.h b/include/linux/topology.h
index 7402c1a..976a130 100644
--- a/include/linux/topology.h
+++ b/include/linux/topology.h
@@ -180,6 +180,9 @@ int arch_update_cpu_topology(void);
#ifndef topology_physical_package_id
#define topology_physical_package_id(cpu) ((void)(cpu), -1)
#endif
+#ifndef topology_cpu_node_id
+#define topology_cpu_node_id(cpu) ((void)(cpu), 0)
+#endif
#ifndef topology_core_id
#define topology_core_id(cpu) ((void)(cpu), 0)
#endif
@@ -189,12 +192,18 @@ int arch_update_cpu_topology(void);
#ifndef topology_core_siblings
#define topology_core_siblings(cpu) cpumask_of_cpu(cpu)
#endif
+#ifndef topology_cpu_node_siblings
+#define topology_cpu_node_siblings(cpu) topology_core_siblings(cpu)
+#endif
#ifndef topology_thread_cpumask
#define topology_thread_cpumask(cpu) cpumask_of(cpu)
#endif
#ifndef topology_core_cpumask
#define topology_core_cpumask(cpu) cpumask_of(cpu)
#endif
+#ifndef topology_cpu_node_cpumask
+#define topology_cpu_node_cpumask(cpu) topology_core_cpumask(cpu)
+#endif

/* Returns the number of the current Node. */
#ifndef numa_node_id
--
1.6.3.3