cgroup: replace css_set walking populated test with testing cgrp->nr_populated_csets

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Implement trivial cgroup_has_tasks() which tests whether
cgrp->nr_populated_csets is zero and replace the explicit local
populated test in cgroup_subtree_control().  This simplifies the code
and cgroup_has_tasks() will be used in more places later.

Signed-off-by: Tejun Heo <tj@kernel.org>

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Tejun Heo 2017-07-16 21:44:18 -04:00

parent 788b950c62

commit 27f26753f8

1 changed files with 8 additions and 22 deletions

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kernel/cgroup/cgroup.c

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