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sched: Move group scheduling functions out of include/linux/sched.h 

- Make sched_group_{set_,}runtime(), sched_group_{set_,}period()
and sched_rt_can_attach() static.

- Move sched_{create,destroy,online,offline}_group() to
kernel/sched/sched.h.

- Remove declaration of sched_group_shares().

Signed-off-by: Li Zefan <lizefan@huawei.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/5135A7C5.3000708@huawei.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Li Zefan 2013-03-05 16:07:33 +08:00 committed by Ingo Molnar
parent 15f803c94b
commit 25cc7da7e6
3 changed files with 17 additions and 26 deletions
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21
include/linux/sched.h
View File

@ -2512,28 +2512,7 @@ extern long sched_setaffinity(pid_t pid, const struct cpumask *new_mask);
extern long sched_getaffinity(pid_t pid, struct cpumask *mask);
#ifdef CONFIG_CGROUP_SCHED
extern struct task_group root_task_group;
extern struct task_group *sched_create_group(struct task_group *parent);
extern void sched_online_group(struct task_group *tg,
struct task_group *parent);
extern void sched_destroy_group(struct task_group *tg);
extern void sched_offline_group(struct task_group *tg);
extern void sched_move_task(struct task_struct *tsk);
#ifdef CONFIG_FAIR_GROUP_SCHED
extern int sched_group_set_shares(struct task_group *tg, unsigned long shares);
extern unsigned long sched_group_shares(struct task_group *tg);
#endif
#ifdef CONFIG_RT_GROUP_SCHED
extern int sched_group_set_rt_runtime(struct task_group *tg,
long rt_runtime_us);
extern long sched_group_rt_runtime(struct task_group *tg);
extern int sched_group_set_rt_period(struct task_group *tg,
long rt_period_us);
extern long sched_group_rt_period(struct task_group *tg);
extern int sched_rt_can_attach(struct task_group *tg, struct task_struct *tsk);
#endif
#endif /* CONFIG_CGROUP_SCHED */
extern int task_can_switch_user(struct user_struct *up,

10
kernel/sched/core.c
View File

@ -7455,7 +7455,7 @@ unlock:
return err;
}
int sched_group_set_rt_runtime(struct task_group *tg, long rt_runtime_us)
static int sched_group_set_rt_runtime(struct task_group *tg, long rt_runtime_us)
{
u64 rt_runtime, rt_period;
@ -7467,7 +7467,7 @@ int sched_group_set_rt_runtime(struct task_group *tg, long rt_runtime_us)
return tg_set_rt_bandwidth(tg, rt_period, rt_runtime);
}
long sched_group_rt_runtime(struct task_group *tg)
static long sched_group_rt_runtime(struct task_group *tg)
{
u64 rt_runtime_us;
@ -7479,7 +7479,7 @@ long sched_group_rt_runtime(struct task_group *tg)
return rt_runtime_us;
}
int sched_group_set_rt_period(struct task_group *tg, long rt_period_us)
static int sched_group_set_rt_period(struct task_group *tg, long rt_period_us)
{
u64 rt_runtime, rt_period;
@ -7492,7 +7492,7 @@ int sched_group_set_rt_period(struct task_group *tg, long rt_period_us)
return tg_set_rt_bandwidth(tg, rt_period, rt_runtime);
}
long sched_group_rt_period(struct task_group *tg)
static long sched_group_rt_period(struct task_group *tg)
{
u64 rt_period_us;
@ -7527,7 +7527,7 @@ static int sched_rt_global_constraints(void)
return ret;
}
int sched_rt_can_attach(struct task_group *tg, struct task_struct *tsk)
static int sched_rt_can_attach(struct task_group *tg, struct task_struct *tsk)
{
/* Don't accept realtime tasks when there is no way for them to run */
if (rt_task(tsk) && tg->rt_bandwidth.rt_runtime == 0)

12
kernel/sched/sched.h
View File

@ -221,6 +221,18 @@ extern void init_tg_rt_entry(struct task_group *tg, struct rt_rq *rt_rq,
struct sched_rt_entity *rt_se, int cpu,
struct sched_rt_entity *parent);
extern struct task_group *sched_create_group(struct task_group *parent);
extern void sched_online_group(struct task_group *tg,
struct task_group *parent);
extern void sched_destroy_group(struct task_group *tg);
extern void sched_offline_group(struct task_group *tg);
extern void sched_move_task(struct task_struct *tsk);
#ifdef CONFIG_FAIR_GROUP_SCHED
extern int sched_group_set_shares(struct task_group *tg, unsigned long shares);
#endif
#else /* CONFIG_CGROUP_SCHED */
struct cfs_bandwidth { };