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| author | Tejun Heo <tj@kernel.org> | 2017-07-17 04:43:33 +0300 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2017-07-17 04:44:42 +0300 |
| commit | 788b950c62e06b02278a0fd380e1a0667996ce3c (patch) | |
| tree | ca94c0d11e8d7f0b736d27036dd611f6ea2e75a7 /include/linux/cgroup.h | |
| parent | 88e033e326307831922e34e7de0d694274dcc1c7 (diff) | |
| download | linux-788b950c62e06b02278a0fd380e1a0667996ce3c.tar.xz | |
cgroup: distinguish local and children populated states
cgrp->populated_cnt counts both local (the cgroup's populated
css_sets) and subtree proper (populated children) so that it's only
zero when the whole subtree, including self, is empty.
This patch splits the counter into two so that local and children
populated states are tracked separately. It allows finer-grained
tests on the state of the hierarchy which will be used to replace
css_set walking local populated test.
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'include/linux/cgroup.h')
| -rw-r--r-- | include/linux/cgroup.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index 710a005c6b7a..308b10797a54 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -537,7 +537,7 @@ static inline bool task_under_cgroup_hierarchy(struct task_struct *task, /* no synchronization, the result can only be used as a hint */ static inline bool cgroup_is_populated(struct cgroup *cgrp) { - return cgrp->populated_cnt; + return cgrp->nr_populated_csets + cgrp->nr_populated_children; } /* returns ino associated with a cgroup */ |