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>

1 files changed, 3 insertions, 5 deletions

diff --git a/arch/sparc/kernel/sun4m_smp.c b/arch/sparc/kernel/sun4m_smp.c
index 2a8f4fc4..960b113 100644
--- a/arch/sparc/kernel/sun4m_smp.c
+++ b/arch/sparc/kernel/sun4m_smp.c
@@ -186,11 +186,9 @@ void __init smp4m_smp_done(void)
 	/* setup cpu list for irq rotation */
 	first = 0;
 	prev = &first;
-	for (i = 0; i < NR_CPUS; i++) {
-		if (cpu_online(i)) {
-			*prev = i;
-			prev = &cpu_data(i).next;
-		}
+	for_each_online_cpu(i) {
+		*prev = i;
+		prev = &cpu_data(i).next;
 	}
 	*prev = first;
 	local_flush_cache_all();