cpumask: prepare for iterators to only go to nr_cpu_ids/nr_cpumask_bits.: sparc

Impact: cleanup, futureproof

In fact, all cpumask ops will only be valid (in general) for bit
numbers < nr_cpu_ids.  So use that instead of NR_CPUS in various
places.

This is always safe: no cpu number can be >= nr_cpu_ids, and
nr_cpu_ids is initialized to NR_CPUS at boot.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/sparc/kernel/smp_32.c b/arch/sparc/kernel/smp_32.c
index 88f43c5..be1ae37 100644
--- a/arch/sparc/kernel/smp_32.c
+++ b/arch/sparc/kernel/smp_32.c
@@ -70,13 +70,12 @@
 	extern void smp4m_smp_done(void);
 	extern void smp4d_smp_done(void);
 	unsigned long bogosum = 0;
-	int cpu, num;
+	int cpu, num = 0;
 
-	for (cpu = 0, num = 0; cpu < NR_CPUS; cpu++)
-		if (cpu_online(cpu)) {
-			num++;
-			bogosum += cpu_data(cpu).udelay_val;
-		}
+	for_each_online_cpu(cpu) {
+		num++;
+		bogosum += cpu_data(cpu).udelay_val;
+	}
 
 	printk("Total of %d processors activated (%lu.%02lu BogoMIPS).\n",
 		num, bogosum/(500000/HZ),