projects/linux·commit 0f532f38

[PATCH] cpumask: add highest_possible_node_id

0f532f38 · Greg Banks <[email protected]> · 2006-10-02 02:17:39 -07:00

cpumask: add highest_possible_node_id(), analogous to
highest_possible_processor_id().

[[email protected]: fix typo]
Signed-off-by: Greg Banks <[email protected]>
Signed-off-by: Paul Jackson <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Commit
0f532f3861d2c4e5aa7dcd33fb18e9975eb28457
Parents
ca8af486

Changes

2 files changed · +18 −0

FileStatusAddDelContent
include/linux/nodemask.hmodified+2−0View file
lib/cpumask.cmodified+16−0View file

include/linux/nodemask.h

View file
diff --git a/include/linux/nodemask.h b/include/linux/nodemask.h
index 1a9ef3e..5dce5c2 100644
--- a/include/linux/nodemask.h
+++ b/include/linux/nodemask.h
@@ -352,6 +352,7 @@ extern nodemask_t node_possible_map;
#define node_possible(node) node_isset((node), node_possible_map)
#define first_online_node first_node(node_online_map)
#define next_online_node(nid) next_node((nid), node_online_map)
+int highest_possible_node_id(void);
#else
#define num_online_nodes() 1
#define num_possible_nodes() 1
@@ -359,6 +360,7 @@ extern nodemask_t node_possible_map;
#define node_possible(node) ((node) == 0)
#define first_online_node 0
#define next_online_node(nid) (MAX_NUMNODES)
+#define highest_possible_node_id() 0
#endif
#define any_online_node(mask) \

lib/cpumask.c

View file
diff --git a/lib/cpumask.c b/lib/cpumask.c
index 3a67dc5..7a2a73f 100644
--- a/lib/cpumask.c
+++ b/lib/cpumask.c
@@ -43,3 +43,19 @@ int __any_online_cpu(const cpumask_t *mask)
return cpu;
}
EXPORT_SYMBOL(__any_online_cpu);
+
+#if MAX_NUMNODES > 1
+/*
+ * Find the highest possible node id.
+ */
+int highest_possible_node_id(void)
+{
+ unsigned int node;
+ unsigned int highest = 0;
+
+ for_each_node_mask(node, node_possible_map)
+ highest = node;
+ return highest;
+}
+EXPORT_SYMBOL(highest_possible_node_id);
+#endif