cgroup: remove cgroup_subsys argument from callbacks
The argument is not used at all, and it's not necessary, because
a specific callback handler of course knows which subsys it
belongs to.
Now only ->pupulate() takes this argument, because the handlers of
this callback always call cgroup_add_file()/cgroup_add_files().
So we reduce a few lines of code, though the shrinking of object size
is minimal.
16 files changed, 113 insertions(+), 162 deletions(-)
text data bss dec hex filename
5486240 656987 7039960 13183187 c928d3 vmlinux.o.orig
5486170 656987 7039960 13183117 c9288d vmlinux.o
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
diff --git a/security/device_cgroup.c b/security/device_cgroup.c
index 8b5b5d8..c43a332 100644
--- a/security/device_cgroup.c
+++ b/security/device_cgroup.c
@@ -61,8 +61,8 @@
struct cgroup_subsys devices_subsys;
-static int devcgroup_can_attach(struct cgroup_subsys *ss,
- struct cgroup *new_cgrp, struct cgroup_taskset *set)
+static int devcgroup_can_attach(struct cgroup *new_cgrp,
+ struct cgroup_taskset *set)
{
struct task_struct *task = cgroup_taskset_first(set);
@@ -156,8 +156,7 @@
/*
* called from kernel/cgroup.c with cgroup_lock() held.
*/
-static struct cgroup_subsys_state *devcgroup_create(struct cgroup_subsys *ss,
- struct cgroup *cgroup)
+static struct cgroup_subsys_state *devcgroup_create(struct cgroup *cgroup)
{
struct dev_cgroup *dev_cgroup, *parent_dev_cgroup;
struct cgroup *parent_cgroup;
@@ -195,8 +194,7 @@
return &dev_cgroup->css;
}
-static void devcgroup_destroy(struct cgroup_subsys *ss,
- struct cgroup *cgroup)
+static void devcgroup_destroy(struct cgroup *cgroup)
{
struct dev_cgroup *dev_cgroup;
struct dev_whitelist_item *wh, *tmp;