kernel/cgroup/cgroup.c

84  * css_set_lock protects task->cgroups pointer, the list of css_set
194  * cgroups with bigger numbers are newer than those with smaller numbers.
447 		/* threaded cgroups can only have threaded controllers */
467 		/* threaded cgroups can only have threaded controllers */
725  * reference-counted, to improve performance when child cgroups
828  * populated counters of all associated cgroups accordingly.
907  * account cgroups in empty hierarchies.
982 	 * associated with the same set of cgroups but different csses.
1000 	 * different cgroups in hierarchies.  As different cgroups may
1019 		/* Locate the cgroups associated with these links. */
1454 		 * cgroups visible for lookups.
1486  * A task must hold cgroup_mutex to modify cgroups.
1501  * is zero, and its list of 'children' cgroups is empty.  Since all
1504  * always has either children cgroups and/or using tasks.  So we don't
2642  * and threaded cgroups, subtree_control must be zero for migration
2643  * destination cgroups with tasks so that child cgroups don't compete
2732 	 * If ->dead, @src_set is associated with one or more dead cgroups
3360 	 * child cgroups competing against tasks.
4020 	 * writable in non-threaded cgroups.
4279 	/* add/rm files for all cgroups created before */
4370  * existing cgroups and all future cgroups won't have them either.  This
4396  * existing cgroups to which @ss is attached and all future cgroups will
4402  * even if some file creation attempts on existing cgroups fail.
5107 	 * to see both source and destination cgroups from its namespace.
5659 			 * If the new cgroup is frozen, all ancestor cgroups
5938 		 * counters of ancestor cgroups.
6035  * Initialize cgroups at system boot, and initialize any
6048 	RCU_INIT_POINTER(init_task.cgroups, &init_css_set);
6165 	WARN_ON(!proc_create_single("cgroups", 0, NULL, proc_cgroupstats_show));
6204  * Only cgroups within current task's cgroup NS are valid.
6331 	RCU_INIT_POINTER(child->cgroups, &init_css_set);