1 files changed, 12 insertions, 0 deletions

diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
index b15826f6e3a2..fe9778301d07 100644
--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -392,4 +392,16 @@ extern cpumask_t cpu_present_map;
 #define for_each_online_cpu(cpu)  for_each_cpu_mask((cpu), cpu_online_map)
 #define for_each_present_cpu(cpu) for_each_cpu_mask((cpu), cpu_present_map)
 
+/* Find the highest possible smp_processor_id() */
+static inline unsigned int highest_possible_processor_id(void)
+{
+        unsigned int cpu, highest = 0;
+
+        for_each_cpu_mask(cpu, cpu_possible_map)
+                highest = cpu;
+
+        return highest;
+}
+
+
 #endif /* __LINUX_CPUMASK_H */