1 files changed, 19 insertions, 3 deletions

diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
index 789cf5f920ce..bae6fe24d1f9 100644
--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -84,14 +84,16 @@ extern const struct cpumask *const cpu_active_mask;
 #define num_online_cpus()       cpumask_weight(cpu_online_mask)
 #define num_possible_cpus()     cpumask_weight(cpu_possible_mask)
 #define num_present_cpus()      cpumask_weight(cpu_present_mask)
+#define num_active_cpus()       cpumask_weight(cpu_active_mask)
 #define cpu_online(cpu)         cpumask_test_cpu((cpu), cpu_online_mask)
 #define cpu_possible(cpu)       cpumask_test_cpu((cpu), cpu_possible_mask)
 #define cpu_present(cpu)        cpumask_test_cpu((cpu), cpu_present_mask)
 #define cpu_active(cpu)         cpumask_test_cpu((cpu), cpu_active_mask)
 #else
-#define num_online_cpus()       1
-#define num_possible_cpus()     1
-#define num_present_cpus()      1
+#define num_online_cpus()       1U
+#define num_possible_cpus()     1U
+#define num_present_cpus()      1U
+#define num_active_cpus()       1U
 #define cpu_online(cpu)         ((cpu) == 0)
 #define cpu_possible(cpu)       ((cpu) == 0)
 #define cpu_present(cpu)        ((cpu) == 0)
@@ -141,6 +143,8 @@ static inline unsigned int cpumask_any_but(const struct cpumask *mask,
 
 #define for_each_cpu(cpu, mask)                 \
         for ((cpu) = 0; (cpu) < 1; (cpu)++, (void)mask)
+#define for_each_cpu_not(cpu, mask)             \
+        for ((cpu) = 0; (cpu) < 1; (cpu)++, (void)mask)
 #define for_each_cpu_and(cpu, mask, and)        \
         for ((cpu) = 0; (cpu) < 1; (cpu)++, (void)mask, (void)and)
 #else
@@ -201,6 +205,18 @@ int cpumask_any_but(const struct cpumask *mask, unsigned int cpu);
                 (cpu) < nr_cpu_ids;)
 
 /**
+ * for_each_cpu_not - iterate over every cpu in a complemented mask
+ * @cpu: the (optionally unsigned) integer iterator
+ * @mask: the cpumask pointer
+ *
+ * After the loop, cpu is >= nr_cpu_ids.
+ */
+#define for_each_cpu_not(cpu, mask)                             \
+        for ((cpu) = -1;                                        \
+                (cpu) = cpumask_next_zero((cpu), (mask)),       \
+                (cpu) < nr_cpu_ids;)
+
+/**
  * for_each_cpu_and - iterate over every cpu in both masks
  * @cpu: the (optionally unsigned) integer iterator
  * @mask: the first cpumask pointer