diff options
Diffstat (limited to 'include/linux/cgroup.h')
| -rw-r--r-- | include/linux/cgroup.h | 35 |
1 files changed, 18 insertions, 17 deletions
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index 03d8a92786da..7a2189ca8327 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -82,7 +82,7 @@ struct cgroup_subsys_state { /* bits in struct cgroup_subsys_state flags field */ enum { CSS_ROOT = (1 << 0), /* this CSS is the root of the subsystem */ - CSS_ONLINE = (1 << 1), /* between ->post_create() and ->pre_destroy() */ + CSS_ONLINE = (1 << 1), /* between ->css_online() and ->css_offline() */ }; /* Caller must verify that the css is not for root cgroup */ @@ -439,10 +439,11 @@ int cgroup_taskset_size(struct cgroup_taskset *tset); */ struct cgroup_subsys { - struct cgroup_subsys_state *(*create)(struct cgroup *cgrp); - int (*post_create)(struct cgroup *cgrp); - void (*pre_destroy)(struct cgroup *cgrp); - void (*destroy)(struct cgroup *cgrp); + struct cgroup_subsys_state *(*css_alloc)(struct cgroup *cgrp); + int (*css_online)(struct cgroup *cgrp); + void (*css_offline)(struct cgroup *cgrp); + void (*css_free)(struct cgroup *cgrp); + int (*can_attach)(struct cgroup *cgrp, struct cgroup_taskset *tset); void (*cancel_attach)(struct cgroup *cgrp, struct cgroup_taskset *tset); void (*attach)(struct cgroup *cgrp, struct cgroup_taskset *tset); @@ -541,13 +542,13 @@ static inline struct cgroup* task_cgroup(struct task_struct *task, * @cgroup: cgroup whose children to walk * * Walk @cgroup's children. Must be called under rcu_read_lock(). A child - * cgroup which hasn't finished ->post_create() or already has finished - * ->pre_destroy() may show up during traversal and it's each subsystem's + * cgroup which hasn't finished ->css_online() or already has finished + * ->css_offline() may show up during traversal and it's each subsystem's * responsibility to verify that each @pos is alive. * - * If a subsystem synchronizes against the parent in its ->post_create() - * and before starting iterating, a cgroup which finished ->post_create() - * is guaranteed to be visible in the future iterations. + * If a subsystem synchronizes against the parent in its ->css_online() and + * before starting iterating, a cgroup which finished ->css_online() is + * guaranteed to be visible in the future iterations. */ #define cgroup_for_each_child(pos, cgroup) \ list_for_each_entry_rcu(pos, &(cgroup)->children, sibling) @@ -561,19 +562,19 @@ struct cgroup *cgroup_next_descendant_pre(struct cgroup *pos, * @cgroup: cgroup whose descendants to walk * * Walk @cgroup's descendants. Must be called under rcu_read_lock(). A - * descendant cgroup which hasn't finished ->post_create() or already has - * finished ->pre_destroy() may show up during traversal and it's each + * descendant cgroup which hasn't finished ->css_online() or already has + * finished ->css_offline() may show up during traversal and it's each * subsystem's responsibility to verify that each @pos is alive. * - * If a subsystem synchronizes against the parent in its ->post_create() - * and before starting iterating, and synchronizes against @pos on each - * iteration, any descendant cgroup which finished ->post_create() is + * If a subsystem synchronizes against the parent in its ->css_online() and + * before starting iterating, and synchronizes against @pos on each + * iteration, any descendant cgroup which finished ->css_offline() is * guaranteed to be visible in the future iterations. * * In other words, the following guarantees that a descendant can't escape * state updates of its ancestors. * - * my_post_create(@cgrp) + * my_online(@cgrp) * { * Lock @cgrp->parent and @cgrp; * Inherit state from @cgrp->parent; @@ -606,7 +607,7 @@ struct cgroup *cgroup_next_descendant_pre(struct cgroup *pos, * iteration should lock and unlock both @pos->parent and @pos. * * Alternatively, a subsystem may choose to use a single global lock to - * synchronize ->post_create() and ->pre_destroy() against tree-walking + * synchronize ->css_online() and ->css_offline() against tree-walking * operations. */ #define cgroup_for_each_descendant_pre(pos, cgroup) \ |