sched: Do not zero sg->cpumask and sg->sgp->power in build_sched_groups()

There is no need to zero struct sched_group member cpumask and struct
sched_group_power member power since both structures are already allocated
as zeroed memory in __sdt_alloc().

This patch has been tested with
BUG_ON(!cpumask_empty(sched_group_cpus(sg))); and BUG_ON(sg->sgp->power);
in build_sched_groups() on ARM TC2 and INTEL i5 M520 platform including
CPU hotplug scenarios.

Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1398865178-12577-1-git-send-email-dietmar.eggemann@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 0 insertions, 2 deletions

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 45d077ed24fb..6340c601475d 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -5794,8 +5794,6 @@ build_sched_groups(struct sched_domain *sd, int cpu)
                         continue;
 
                 group = get_group(i, sdd, &sg);
-                cpumask_clear(sched_group_cpus(sg));
-                sg->sgp->power = 0;
                 cpumask_setall(sched_group_mask(sg));
 
                 for_each_cpu(j, span) {