[CPUMASK]: Prevent unused variable warnings on uniprocessor.

include/asm-generic/cpumask_up.h

@@ -3,10 +3,10 @@
 
 #define cpus_coerce(map)	(map)
 
-#define cpu_set(cpu, map)		do { cpus_coerce(map) = 1UL; } while (0)
-#define cpu_clear(cpu, map)		do { cpus_coerce(map) = 0UL; } while (0)
-#define cpu_isset(cpu, map)		(cpus_coerce(map) != 0UL)
-#define cpu_test_and_set(cpu, map)	test_and_set_bit(0, (map).mask)
+#define cpu_set(cpu, map)		do { (void)(cpu); cpus_coerce(map) = 1UL; } while (0)
+#define cpu_clear(cpu, map)		do { (void)(cpu); cpus_coerce(map) = 0UL; } while (0)
+#define cpu_isset(cpu, map)		((void)(cpu), cpus_coerce(map) != 0UL)
+#define cpu_test_and_set(cpu, map)	((void)(cpu), test_and_set_bit(0, (map).mask))
 
 #define cpus_and(dst, src1, src2)					\
 	do {								\
@@ -46,7 +46,7 @@
 		cpus_coerce(__tmp__) = map;				\
 		__tmp__;						\
 	})
-#define cpumask_of_cpu(cpu)		cpus_promote(1)
+#define cpumask_of_cpu(cpu)		((void)(cpu), cpus_promote(1))
 #define any_online_cpu(map)		(cpus_coerce(map) ? 0 : 1)
 
 /*