diff options
Diffstat (limited to 'include/linux/sched.h')
| -rw-r--r-- | include/linux/sched.h | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 10a83d8d5775..af2ed4bae678 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -894,6 +894,34 @@ struct sched_entity { #endif }; +#ifdef CONFIG_CGROUPS + +#define SUBSYS(_x) _x ## _subsys_id, +enum cgroup_subsys_id { +#include <linux/cgroup_subsys.h> + CGROUP_SUBSYS_COUNT +}; +#undef SUBSYS + +/* A css_set is a structure holding pointers to a set of + * cgroup_subsys_state objects. + */ + +struct css_set { + + /* Set of subsystem states, one for each subsystem. NULL for + * subsystems that aren't part of this hierarchy. These + * pointers reduce the number of dereferences required to get + * from a task to its state for a given cgroup, but result + * in increased space usage if tasks are in wildly different + * groupings across different hierarchies. This array is + * immutable after creation */ + struct cgroup_subsys_state *subsys[CGROUP_SUBSYS_COUNT]; + +}; + +#endif /* CONFIG_CGROUPS */ + struct task_struct { volatile long state; /* -1 unrunnable, 0 runnable, >0 stopped */ void *stack; @@ -1130,6 +1158,9 @@ struct task_struct { int cpuset_mems_generation; int cpuset_mem_spread_rotor; #endif +#ifdef CONFIG_CGROUPS + struct css_set cgroups; +#endif #ifdef CONFIG_FUTEX struct robust_list_head __user *robust_list; #ifdef CONFIG_COMPAT @@ -1625,7 +1656,8 @@ static inline int thread_group_empty(struct task_struct *p) /* * Protects ->fs, ->files, ->mm, ->group_info, ->comm, keyring * subscriptions and synchronises with wait4(). Also used in procfs. Also - * pins the final release of task.io_context. Also protects ->cpuset. + * pins the final release of task.io_context. Also protects ->cpuset and + * ->cgroup.subsys[]. * * Nests both inside and outside of read_lock(&tasklist_lock). * It must not be nested with write_lock_irq(&tasklist_lock), |