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-rw-r--r--include/linux/cpuset.h10
1 files changed, 9 insertions, 1 deletions
diff --git a/include/linux/cpuset.h b/include/linux/cpuset.h
index 37d2dd7ca3e..34081c168af 100644
--- a/include/linux/cpuset.h
+++ b/include/linux/cpuset.h
@@ -14,6 +14,8 @@
#ifdef CONFIG_CPUSETS
+extern int number_of_cpusets; /* How many cpusets are defined in system? */
+
extern int cpuset_init(void);
extern void cpuset_init_smp(void);
extern void cpuset_fork(struct task_struct *p);
@@ -25,7 +27,13 @@ void cpuset_update_task_memory_state(void);
#define cpuset_nodes_subset_current_mems_allowed(nodes) \
nodes_subset((nodes), current->mems_allowed)
int cpuset_zonelist_valid_mems_allowed(struct zonelist *zl);
-extern int cpuset_zone_allowed(struct zone *z, gfp_t gfp_mask);
+
+extern int __cpuset_zone_allowed(struct zone *z, gfp_t gfp_mask);
+static int inline cpuset_zone_allowed(struct zone *z, gfp_t gfp_mask)
+{
+ return number_of_cpusets <= 1 || __cpuset_zone_allowed(z, gfp_mask);
+}
+
extern int cpuset_excl_nodes_overlap(const struct task_struct *p);
#define cpuset_memory_pressure_bump() \