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Subject[PATCH 48/54] kernel/time: replace cpumask_weight with cpumask_weight_eq where appropriate
Date
tick_cleanup_dead_cpu() calls cpumask_weight() to compare the weight
of cpumask with a given number. We can do it more efficiently with
cpumask_weight_eq() because conditional cpumask_weight may stop
traversing the cpumask earlier, as soon as condition is met.

Signed-off-by: Yury Norov <yury.norov@gmail.com>
---
kernel/time/clockevents.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/time/clockevents.c b/kernel/time/clockevents.c
index 003ccf338d20..32d6629a55b2 100644
--- a/kernel/time/clockevents.c
+++ b/kernel/time/clockevents.c
@@ -648,7 +648,7 @@ void tick_cleanup_dead_cpu(int cpu)
*/
list_for_each_entry_safe(dev, tmp, &clockevent_devices, list) {
if (cpumask_test_cpu(cpu, dev->cpumask) &&
- cpumask_weight(dev->cpumask) == 1 &&
+ cpumask_weight_eq(dev->cpumask, 1) &&
!tick_is_broadcast_device(dev)) {
BUG_ON(!clockevent_state_detached(dev));
list_del(&dev->list);
--
2.30.2
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