diff options
| author | Tejun Heo <tj@kernel.org> | 2017-08-11 05:49:01 -0700 |
|---|---|---|
| committer | Michael Bestas <mkbestas@lineageos.org> | 2022-04-19 00:51:36 +0300 |
| commit | 483cbe97b0e4112d1e48df80de2e6a2c8a650b15 (patch) | |
| tree | ece584721019858f8b35705b4beb05d2a460ad88 /kernel/cgroup.c | |
| parent | 01974b4687bb2dcac6b1315e63875ec1ca07fe5e (diff) | |
BACKPORT: cgroup: misc changes
Misc trivial changes to prepare for future changes. No functional
difference.
* Expose cgroup_get(), cgroup_tryget() and cgroup_parent().
* Implement task_dfl_cgroup() which dereferences css_set->dfl_cgrp.
* Rename cgroup_stats_show() to cgroup_stat_show() for consistency
with the file name.
Signed-off-by: Tejun Heo <tj@kernel.org>
(cherry picked from commit 3e48930cc74f0c212ee1838f89ad0ca7fcf2fea1)
Conflicts:
kernel/cgroup/cgroup.c
(1. manual merge because kernel/cgroup/cgroup.c is under kernel/cgroup.c
2. cgroup_stats_show change is skipped because the function dos not exist)
Bug: 111308141
Test: modified lmkd to use PSI and tested using lmkd_unit_test
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Change-Id: I756ee3dcf0d0f3da69cd1b58e644271625053538
Signed-off-by: Chatur27 <jasonbright2709@gmail.com>
Diffstat (limited to 'kernel/cgroup.c')
| -rw-r--r-- | kernel/cgroup.c | 20 |
1 files changed, 0 insertions, 20 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c index 4b9a259bd413..11353701f40d 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -358,15 +358,6 @@ static void cgroup_idr_remove(struct idr *idr, int id) spin_unlock_bh(&cgroup_idr_lock); } -static struct cgroup *cgroup_parent(struct cgroup *cgrp) -{ - struct cgroup_subsys_state *parent_css = cgrp->self.parent; - - if (parent_css) - return container_of(parent_css, struct cgroup, self); - return NULL; -} - /* subsystems visibly enabled on a cgroup */ static u16 cgroup_control(struct cgroup *cgrp) { @@ -484,17 +475,6 @@ static inline bool cgroup_is_dead(const struct cgroup *cgrp) return !(cgrp->self.flags & CSS_ONLINE); } -static void cgroup_get(struct cgroup *cgrp) -{ - WARN_ON_ONCE(cgroup_is_dead(cgrp)); - css_get(&cgrp->self); -} - -static bool cgroup_tryget(struct cgroup *cgrp) -{ - return css_tryget(&cgrp->self); -} - struct cgroup_subsys_state *of_css(struct kernfs_open_file *of) { struct cgroup *cgrp = of->kn->parent->priv; |