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| author | Dietmar Eggemann <Dietmar.Eggemann@arm.com> | 2014-04-30 14:39:38 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-05-22 11:16:30 +0200 |
| commit | caffcdd8d27ba78730d5540396ce72ad022aff2c (patch) | |
| tree | ed50e770fcc9c608ba39ab38924bb02fd63c8270 | |
| parent | c515db8cd311ef77b2dc7cbd6b695022655bb0f3 (diff) | |
| download | op-kernel-dev-caffcdd8d27ba78730d5540396ce72ad022aff2c.zip op-kernel-dev-caffcdd8d27ba78730d5540396ce72ad022aff2c.tar.gz | |
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>
| -rw-r--r-- | kernel/sched/core.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 45d077e..6340c60 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) { |
