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authorLinus Torvalds <torvalds@linux-foundation.org>2012-12-12 08:18:24 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-12-12 08:18:24 -0800
commitd206e09036d6201f90b2719484c8a59526c46125 (patch)
tree84b9057919bcb8cfd1cff47baa5fc74457e77d6d /net/sched
parentfef3ff2eb777e76cfa5ae67591982d902c17139c (diff)
parent15ef4ffaa797034d5ff82844daf8f595d7c6d53c (diff)
Merge branch 'for-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup changes from Tejun Heo: "A lot of activities on cgroup side. The big changes are focused on making cgroup hierarchy handling saner. - cgroup_rmdir() had peculiar semantics - it allowed cgroup destruction to be vetoed by individual controllers and tried to drain refcnt synchronously. The vetoing never worked properly and caused good deal of contortions in cgroup. memcg was the last reamining user. Michal Hocko removed the usage and cgroup_rmdir() path has been simplified significantly. This was done in a separate branch so that the memcg people can base further memcg changes on top. - The above allowed cleaning up cgroup lifecycle management and implementation of generic cgroup iterators which are used to improve hierarchy support. - cgroup_freezer updated to allow migration in and out of a frozen cgroup and handle hierarchy. If a cgroup is frozen, all descendant cgroups are frozen. - netcls_cgroup and netprio_cgroup updated to handle hierarchy properly. - Various fixes and cleanups. - Two merge commits. One to pull in memcg and rmdir cleanups (needed to build iterators). The other pulled in cgroup/for-3.7-fixes for device_cgroup fixes so that further device_cgroup patches can be stacked on top." Fixed up a trivial conflict in mm/memcontrol.c as per Tejun (due to commit bea8c150a7 ("memcg: fix hotplugged memory zone oops") in master touching code close to commit 2ef37d3fe4 ("memcg: Simplify mem_cgroup_force_empty_list error handling") in for-3.8) * 'for-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: (65 commits) cgroup: update Documentation/cgroups/00-INDEX cgroup_rm_file: don't delete the uncreated files cgroup: remove subsystem files when remounting cgroup cgroup: use cgroup_addrm_files() in cgroup_clear_directory() cgroup: warn about broken hierarchies only after css_online cgroup: list_del_init() on removed events cgroup: fix lockdep warning for event_control cgroup: move list add after list head initilization netprio_cgroup: allow nesting and inherit config on cgroup creation netprio_cgroup: implement netprio[_set]_prio() helpers netprio_cgroup: use cgroup->id instead of cgroup_netprio_state->prioidx netprio_cgroup: reimplement priomap expansion netprio_cgroup: shorten variable names in extend_netdev_table() netprio_cgroup: simplify write_priomap() netcls_cgroup: move config inheritance to ->css_online() and remove .broken_hierarchy marking cgroup: remove obsolete guarantee from cgroup_task_migrate. cgroup: add cgroup->id cgroup, cpuset: remove cgroup_subsys->post_clone() cgroup: s/CGRP_CLONE_CHILDREN/CGRP_CPUSET_CLONE_CHILDREN/ cgroup: rename ->create/post_create/pre_destroy/destroy() to ->css_alloc/online/offline/free() ...
Diffstat (limited to 'net/sched')
-rw-r--r--net/sched/cls_cgroup.c28
1 files changed, 12 insertions, 16 deletions
diff --git a/net/sched/cls_cgroup.c b/net/sched/cls_cgroup.c
index 2ecde225ae60..31f06b633574 100644
--- a/net/sched/cls_cgroup.c
+++ b/net/sched/cls_cgroup.c
@@ -34,21 +34,25 @@ static inline struct cgroup_cls_state *task_cls_state(struct task_struct *p)
struct cgroup_cls_state, css);
}
-static struct cgroup_subsys_state *cgrp_create(struct cgroup *cgrp)
+static struct cgroup_subsys_state *cgrp_css_alloc(struct cgroup *cgrp)
{
struct cgroup_cls_state *cs;
cs = kzalloc(sizeof(*cs), GFP_KERNEL);
if (!cs)
return ERR_PTR(-ENOMEM);
+ return &cs->css;
+}
+static int cgrp_css_online(struct cgroup *cgrp)
+{
if (cgrp->parent)
- cs->classid = cgrp_cls_state(cgrp->parent)->classid;
-
- return &cs->css;
+ cgrp_cls_state(cgrp)->classid =
+ cgrp_cls_state(cgrp->parent)->classid;
+ return 0;
}
-static void cgrp_destroy(struct cgroup *cgrp)
+static void cgrp_css_free(struct cgroup *cgrp)
{
kfree(cgrp_cls_state(cgrp));
}
@@ -75,20 +79,12 @@ static struct cftype ss_files[] = {
struct cgroup_subsys net_cls_subsys = {
.name = "net_cls",
- .create = cgrp_create,
- .destroy = cgrp_destroy,
+ .css_alloc = cgrp_css_alloc,
+ .css_online = cgrp_css_online,
+ .css_free = cgrp_css_free,
.subsys_id = net_cls_subsys_id,
.base_cftypes = ss_files,
.module = THIS_MODULE,
-
- /*
- * While net_cls cgroup has the rudimentary hierarchy support of
- * inheriting the parent's classid on cgroup creation, it doesn't
- * properly propagates config changes in ancestors to their
- * descendents. A child should follow the parent's configuration
- * but be allowed to override it. Fix it and remove the following.
- */
- .broken_hierarchy = true,
};
struct cls_cgroup_head {

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