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| author | Greg Banks <gnb@melbourne.sgi.com> | 2006-10-02 02:17:39 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-02 07:57:17 -0700 |
| commit | 0f532f3861d2c4e5aa7dcd33fb18e9975eb28457 (patch) | |
| tree | 4b4cf436bbc94a1659fdb25314ff7b17624e80a1 | |
| parent | ca8af486765852302931bb69075871d5564e1e5b (diff) | |
| download | lwn-0f532f3861d2c4e5aa7dcd33fb18e9975eb28457.tar.gz lwn-0f532f3861d2c4e5aa7dcd33fb18e9975eb28457.zip | |
[PATCH] cpumask: add highest_possible_node_id
cpumask: add highest_possible_node_id(), analogous to
highest_possible_processor_id().
[pj@sgi.com: fix typo]
Signed-off-by: Greg Banks <gnb@melbourne.sgi.com>
Signed-off-by: Paul Jackson <pj@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | include/linux/nodemask.h | 2 | ||||
| -rw-r--r-- | lib/cpumask.c | 16 |
2 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/nodemask.h b/include/linux/nodemask.h index 1a9ef3e627d1..5dce5c21822c 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) \ diff --git a/lib/cpumask.c b/lib/cpumask.c index 3a67dc5ada7d..7a2a73f88d59 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 |