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-rw-r--r--include/linux/cpumask.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
index b15826f6e3a..9bdba8169b4 100644
--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -392,4 +392,14 @@ 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() */
+#define highest_possible_processor_id() \
+({ \
+ unsigned int cpu, highest = 0; \
+ for_each_cpu_mask(cpu, cpu_possible_map) \
+ highest = cpu; \
+ highest; \
+})
+
+
#endif /* __LINUX_CPUMASK_H */