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Commit bccbe08a authored by Peter Zijlstra's avatar Peter Zijlstra Committed by Ingo Molnar
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sched: rt-group: clean up the ifdeffery 

Clean up some of the excessive ifdeffery introduces in the last patch.
Signed-off-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 052f1dc7
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Inline Side-by-side
Showing with 139 additions and 71 deletions
kernel/sched.c
View file @ bccbe08a
......@@ -7559,57 +7559,29 @@ static int load_balance_monitor(void *unused)
}
#endif /* CONFIG_SMP */
static void free_sched_group(struct task_group *tg)
#ifdef CONFIG_FAIR_GROUP_SCHED
static void free_fair_sched_group(struct task_group *tg)
{
int i;
for_each_possible_cpu(i) {
#ifdef CONFIG_FAIR_GROUP_SCHED
if (tg->cfs_rq)
kfree(tg->cfs_rq[i]);
if (tg->se)
kfree(tg->se[i]);
#endif
#ifdef CONFIG_RT_GROUP_SCHED
if (tg->rt_rq)
kfree(tg->rt_rq[i]);
if (tg->rt_se)
kfree(tg->rt_se[i]);
#endif
}
#ifdef CONFIG_FAIR_GROUP_SCHED
kfree(tg->cfs_rq);
kfree(tg->se);
#endif
#ifdef CONFIG_RT_GROUP_SCHED
kfree(tg->rt_rq);
kfree(tg->rt_se);
#endif
kfree(tg);
}
/* allocate runqueue etc for a new task group */
struct task_group *sched_create_group(void)
static int alloc_fair_sched_group(struct task_group *tg)
{
struct task_group *tg;
#ifdef CONFIG_FAIR_GROUP_SCHED
struct cfs_rq *cfs_rq;
struct sched_entity *se;
#endif
#ifdef CONFIG_RT_GROUP_SCHED
struct rt_rq *rt_rq;
struct sched_rt_entity *rt_se;
#endif
struct rq *rq;
unsigned long flags;
int i;
tg = kzalloc(sizeof(*tg), GFP_KERNEL);
if (!tg)
return ERR_PTR(-ENOMEM);
#ifdef CONFIG_FAIR_GROUP_SCHED
tg->cfs_rq = kzalloc(sizeof(cfs_rq) * NR_CPUS, GFP_KERNEL);
if (!tg->cfs_rq)
goto err;
......@@ -7618,23 +7590,10 @@ struct task_group *sched_create_group(void)
goto err;
tg->shares = NICE_0_LOAD;
#endif
#ifdef CONFIG_RT_GROUP_SCHED
tg->rt_rq = kzalloc(sizeof(rt_rq) * NR_CPUS, GFP_KERNEL);
if (!tg->rt_rq)
goto err;
tg->rt_se = kzalloc(sizeof(rt_se) * NR_CPUS, GFP_KERNEL);
if (!tg->rt_se)
goto err;
tg->rt_runtime = 0;
#endif
for_each_possible_cpu(i) {
rq = cpu_rq(i);
#ifdef CONFIG_FAIR_GROUP_SCHED
cfs_rq = kmalloc_node(sizeof(struct cfs_rq),
GFP_KERNEL|__GFP_ZERO, cpu_to_node(i));
if (!cfs_rq)
......@@ -7646,9 +7605,78 @@ struct task_group *sched_create_group(void)
goto err;
init_tg_cfs_entry(rq, tg, cfs_rq, se, i, 0);
}
return 1;
err:
return 0;
}
static inline void register_fair_sched_group(struct task_group *tg, int cpu)
{
list_add_rcu(&tg->cfs_rq[cpu]->leaf_cfs_rq_list,
&cpu_rq(cpu)->leaf_cfs_rq_list);
}
static inline void unregister_fair_sched_group(struct task_group *tg, int cpu)
{
list_del_rcu(&tg->cfs_rq[cpu]->leaf_cfs_rq_list);
}
#else
static inline void free_fair_sched_group(struct task_group *tg)
{
}
static inline int alloc_fair_sched_group(struct task_group *tg)
{
return 1;
}
static inline void register_fair_sched_group(struct task_group *tg, int cpu)
{
}
static inline void unregister_fair_sched_group(struct task_group *tg, int cpu)
{
}
#endif
#ifdef CONFIG_RT_GROUP_SCHED
static void free_rt_sched_group(struct task_group *tg)
{
int i;
for_each_possible_cpu(i) {
if (tg->rt_rq)
kfree(tg->rt_rq[i]);
if (tg->rt_se)
kfree(tg->rt_se[i]);
}
kfree(tg->rt_rq);
kfree(tg->rt_se);
}
static int alloc_rt_sched_group(struct task_group *tg)
{
struct rt_rq *rt_rq;
struct sched_rt_entity *rt_se;
struct rq *rq;
int i;
tg->rt_rq = kzalloc(sizeof(rt_rq) * NR_CPUS, GFP_KERNEL);
if (!tg->rt_rq)
goto err;
tg->rt_se = kzalloc(sizeof(rt_se) * NR_CPUS, GFP_KERNEL);
if (!tg->rt_se)
goto err;
tg->rt_runtime = 0;
for_each_possible_cpu(i) {
rq = cpu_rq(i);
rt_rq = kmalloc_node(sizeof(struct rt_rq),
GFP_KERNEL|__GFP_ZERO, cpu_to_node(i));
if (!rt_rq)
......@@ -7660,20 +7688,71 @@ struct task_group *sched_create_group(void)
goto err;
init_tg_rt_entry(rq, tg, rt_rq, rt_se, i, 0);
#endif
}
return 1;
err:
return 0;
}
static inline void register_rt_sched_group(struct task_group *tg, int cpu)
{
list_add_rcu(&tg->rt_rq[cpu]->leaf_rt_rq_list,
&cpu_rq(cpu)->leaf_rt_rq_list);
}
static inline void unregister_rt_sched_group(struct task_group *tg, int cpu)
{
list_del_rcu(&tg->rt_rq[cpu]->leaf_rt_rq_list);
}
#else
static inline void free_rt_sched_group(struct task_group *tg)
{
}
static inline int alloc_rt_sched_group(struct task_group *tg)
{
return 1;
}
static inline void register_rt_sched_group(struct task_group *tg, int cpu)
{
}
static inline void unregister_rt_sched_group(struct task_group *tg, int cpu)
{
}
#endif
static void free_sched_group(struct task_group *tg)
{
free_fair_sched_group(tg);
free_rt_sched_group(tg);
kfree(tg);
}
/* allocate runqueue etc for a new task group */
struct task_group *sched_create_group(void)
{
struct task_group *tg;
unsigned long flags;
int i;
tg = kzalloc(sizeof(*tg), GFP_KERNEL);
if (!tg)
return ERR_PTR(-ENOMEM);
if (!alloc_fair_sched_group(tg))
goto err;
if (!alloc_rt_sched_group(tg))
goto err;
spin_lock_irqsave(&task_group_lock, flags);
for_each_possible_cpu(i) {
rq = cpu_rq(i);
#ifdef CONFIG_FAIR_GROUP_SCHED
cfs_rq = tg->cfs_rq[i];
list_add_rcu(&cfs_rq->leaf_cfs_rq_list, &rq->leaf_cfs_rq_list);
#endif
#ifdef CONFIG_RT_GROUP_SCHED
rt_rq = tg->rt_rq[i];
list_add_rcu(&rt_rq->leaf_rt_rq_list, &rq->leaf_rt_rq_list);
#endif
register_fair_sched_group(tg, i);
register_rt_sched_group(tg, i);
}
list_add_rcu(&tg->list, &task_groups);
spin_unlock_irqrestore(&task_group_lock, flags);
......@@ -7700,12 +7779,8 @@ void sched_destroy_group(struct task_group *tg)
spin_lock_irqsave(&task_group_lock, flags);
for_each_possible_cpu(i) {
#ifdef CONFIG_FAIR_GROUP_SCHED
list_del_rcu(&tg->cfs_rq[i]->leaf_cfs_rq_list);
#endif
#ifdef CONFIG_RT_GROUP_SCHED
list_del_rcu(&tg->rt_rq[i]->leaf_rt_rq_list);
#endif
unregister_fair_sched_group(tg, i);
unregister_rt_sched_group(tg, i);
}
list_del_rcu(&tg->list);
spin_unlock_irqrestore(&task_group_lock, flags);
......@@ -7780,8 +7855,6 @@ static DEFINE_MUTEX(shares_mutex);
int sched_group_set_shares(struct task_group *tg, unsigned long shares)
{
int i;
struct cfs_rq *cfs_rq;
struct rq *rq;
unsigned long flags;
mutex_lock(&shares_mutex);
......@@ -7797,10 +7870,8 @@ int sched_group_set_shares(struct task_group *tg, unsigned long shares)
* by taking it off the rq->leaf_cfs_rq_list on each cpu.
*/
spin_lock_irqsave(&task_group_lock, flags);
for_each_possible_cpu(i) {
cfs_rq = tg->cfs_rq[i];
list_del_rcu(&cfs_rq->leaf_cfs_rq_list);
}
for_each_possible_cpu(i)
unregister_fair_sched_group(tg, i);
spin_unlock_irqrestore(&task_group_lock, flags);
/* wait for any ongoing reference to this group to finish */
......@@ -7822,11 +7893,8 @@ int sched_group_set_shares(struct task_group *tg, unsigned long shares)
* each cpu's rq->leaf_cfs_rq_list.
*/
spin_lock_irqsave(&task_group_lock, flags);
for_each_possible_cpu(i) {
rq = cpu_rq(i);
cfs_rq = tg->cfs_rq[i];
list_add_rcu(&cfs_rq->leaf_cfs_rq_list, &rq->leaf_cfs_rq_list);
}
for_each_possible_cpu(i)
register_fair_sched_group(tg, i);
spin_unlock_irqrestore(&task_group_lock, flags);
done:
mutex_unlock(&shares_mutex);
......
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