diff options
| author | Tejun Heo <tj@kernel.org> | 2014-05-16 19:22:48 +0200 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2014-05-16 19:22:48 +0200 |
| commit | 5c9d535b893f30266ea29fe377cb9b002fcd76aa (patch) | |
| tree | 27b1fd6e16c5b0c0729a93c4924289119033137c /kernel/sched | |
| parent | cgroup: skip refcnting on normal root csses and cgrp_dfl_root self css (diff) | |
| download | linux-5c9d535b893f30266ea29fe377cb9b002fcd76aa.tar.xz linux-5c9d535b893f30266ea29fe377cb9b002fcd76aa.zip | |
cgroup: remove css_parent()
cgroup in general is moving towards using cgroup_subsys_state as the
fundamental structural component and css_parent() was introduced to
convert from using cgroup->parent to css->parent. It was quite some
time ago and we're moving forward with making css more prominent.
This patch drops the trivial wrapper css_parent() and let the users
dereference css->parent. While at it, explicitly mark fields of css
which are public and immutable.
v2: New usage from device_cgroup.c converted.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: "David S. Miller" <davem@davemloft.net>
Acked-by: Li Zefan <lizefan@huawei.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/core.c | 2 | ||||
| -rw-r--r-- | kernel/sched/cpuacct.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 268a45ea238c..ac61ad1a5f9f 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -7586,7 +7586,7 @@ cpu_cgroup_css_alloc(struct cgroup_subsys_state *parent_css) static int cpu_cgroup_css_online(struct cgroup_subsys_state *css) { struct task_group *tg = css_tg(css); - struct task_group *parent = css_tg(css_parent(css)); + struct task_group *parent = css_tg(css->parent); if (parent) sched_online_group(tg, parent); diff --git a/kernel/sched/cpuacct.c b/kernel/sched/cpuacct.c index c143ee380e3a..9cf350c94ec4 100644 --- a/kernel/sched/cpuacct.c +++ b/kernel/sched/cpuacct.c @@ -46,7 +46,7 @@ static inline struct cpuacct *task_ca(struct task_struct *tsk) static inline struct cpuacct *parent_ca(struct cpuacct *ca) { - return css_ca(css_parent(&ca->css)); + return css_ca(ca->css.parent); } static DEFINE_PER_CPU(u64, root_cpuacct_cpuusage); |