cpuset: add early empty cpumask check in partition_xcpus_add/del

Add a check for an empty cpumask at the start of partition_xcpus_add()
and partition_xcpus_del(). This allows the functions to return early,
avoiding unnecessary computation when there is no work to be done. With
these changes, partition_xcpus_add() and partition_xcpus_del() can be
called even if xcpus is empty. The caller no longer needs to check whether
xcpus is empty, eliminating many conditional statements.

Signed-off-by: Chen Ridong <chenridong@huawei.com>
Reviewed-by: Guopeng Zhang <zhangguopeng@kylinos.cn>
Reviewed-by: Waiman Long <longman@redhat.com>
Signed-off-by: Ridong Chen <chenridong@xiaomi.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

0 files changed, 0 insertions, 0 deletions