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cgroup: rename ->create/post_create/pre_destroy/destroy() to ->css_alloc/online/offline/free()

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Rename cgroup_subsys css lifetime related callbacks to better describe
what their roles are.  Also, update documentation.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Li Zefan <lizefan@huawei.com>
This commit is contained in:
Tejun Heo 2012-11-19 08:13:38 -08:00
parent b1929db42f
commit 92fb97487a
13 changed files with 130 additions and 119 deletions
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20
kernel/cgroup_freezer.c
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@ -92,7 +92,7 @@ static const char *freezer_state_strs(unsigned int state)
struct cgroup_subsys freezer_subsys;
static struct cgroup_subsys_state *freezer_create(struct cgroup *cgroup)
static struct cgroup_subsys_state *freezer_css_alloc(struct cgroup *cgroup)
{
struct freezer *freezer;
@ -105,14 +105,14 @@ static struct cgroup_subsys_state *freezer_create(struct cgroup *cgroup)
}
/**
* freezer_post_create - commit creation of a freezer cgroup
* freezer_css_online - commit creation of a freezer cgroup
* @cgroup: cgroup being created
*
* We're committing to creation of @cgroup. Mark it online and inherit
* parent's freezing state while holding both parent's and our
* freezer->lock.
*/
static int freezer_post_create(struct cgroup *cgroup)
static int freezer_css_online(struct cgroup *cgroup)
{
struct freezer *freezer = cgroup_freezer(cgroup);
struct freezer *parent = parent_freezer(freezer);
@ -141,13 +141,13 @@ static int freezer_post_create(struct cgroup *cgroup)
}
/**
* freezer_pre_destroy - initiate destruction of @cgroup
* freezer_css_offline - initiate destruction of @cgroup
* @cgroup: cgroup being destroyed
*
* @cgroup is going away. Mark it dead and decrement system_freezing_count
* if it was holding one.
*/
static void freezer_pre_destroy(struct cgroup *cgroup)
static void freezer_css_offline(struct cgroup *cgroup)
{
struct freezer *freezer = cgroup_freezer(cgroup);
@ -161,7 +161,7 @@ static void freezer_pre_destroy(struct cgroup *cgroup)
spin_unlock_irq(&freezer->lock);
}
static void freezer_destroy(struct cgroup *cgroup)
static void freezer_css_free(struct cgroup *cgroup)
{
kfree(cgroup_freezer(cgroup));
}
@ -477,10 +477,10 @@ static struct cftype files[] = {
struct cgroup_subsys freezer_subsys = {
.name = "freezer",
.create = freezer_create,
.post_create = freezer_post_create,
.pre_destroy = freezer_pre_destroy,
.destroy = freezer_destroy,
.css_alloc = freezer_css_alloc,
.css_online = freezer_css_online,
.css_offline = freezer_css_offline,
.css_free = freezer_css_free,
.subsys_id = freezer_subsys_id,
.attach = freezer_attach,
.fork = freezer_fork,