diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/cgroup-defs.h | 33 | ||||
| -rw-r--r-- | include/linux/cgroup.h | 3 |
2 files changed, 31 insertions, 5 deletions
diff --git a/include/linux/cgroup-defs.h b/include/linux/cgroup-defs.h index ae7bc1e70085..651c4363c85e 100644 --- a/include/linux/cgroup-defs.h +++ b/include/linux/cgroup-defs.h @@ -172,6 +172,14 @@ struct css_set { /* reference count */ refcount_t refcount; + /* + * For a domain cgroup, the following points to self. If threaded, + * to the matching cset of the nearest domain ancestor. The + * dom_cset provides access to the domain cgroup and its csses to + * which domain level resource consumptions should be charged. + */ + struct css_set *dom_cset; + /* the default cgroup associated with this css_set */ struct cgroup *dfl_cgrp; @@ -200,6 +208,10 @@ struct css_set { */ struct list_head e_cset_node[CGROUP_SUBSYS_COUNT]; + /* all threaded csets whose ->dom_cset points to this cset */ + struct list_head threaded_csets; + struct list_head threaded_csets_node; + /* * List running through all cgroup groups in the same hash * slot. Protected by css_set_lock @@ -267,12 +279,16 @@ struct cgroup { * doesn't have any tasks. * * All children which have non-zero nr_populated_csets and/or - * nr_populated_children of their own contribute one to - * nr_populated_children. The counter is zero iff this cgroup's - * subtree proper doesn't have any tasks. + * nr_populated_children of their own contribute one to either + * nr_populated_domain_children or nr_populated_threaded_children + * depending on their type. Each counter is zero iff all cgroups + * of the type in the subtree proper don't have any tasks. */ int nr_populated_csets; - int nr_populated_children; + int nr_populated_domain_children; + int nr_populated_threaded_children; + + int nr_threaded_children; /* # of live threaded child cgroups */ struct kernfs_node *kn; /* cgroup kernfs entry */ struct cgroup_file procs_file; /* handle for "cgroup.procs" */ @@ -311,6 +327,15 @@ struct cgroup { struct list_head e_csets[CGROUP_SUBSYS_COUNT]; /* + * If !threaded, self. If threaded, it points to the nearest + * domain ancestor. Inside a threaded subtree, cgroups are exempt + * from process granularity and no-internal-task constraint. + * Domain level resource consumptions which aren't tied to a + * specific task are charged to the dom_cgrp. + */ + struct cgroup *dom_cgrp; + + /* * list of pidlists, up to two for each namespace (one for procs, one * for tasks); created on demand. */ diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index cae5831ae650..b7dd23040cd5 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -541,7 +541,8 @@ static inline bool task_under_cgroup_hierarchy(struct task_struct *task, /* no synchronization, the result can only be used as a hint */ static inline bool cgroup_is_populated(struct cgroup *cgrp) { - return cgrp->nr_populated_csets + cgrp->nr_populated_children; + return cgrp->nr_populated_csets + cgrp->nr_populated_domain_children + + cgrp->nr_populated_threaded_children; } /* returns ino associated with a cgroup */ |