diff options
Diffstat (limited to 'kernel/sched/sched.h')
| -rw-r--r-- | kernel/sched/sched.h | 44 |
1 files changed, 36 insertions, 8 deletions
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 14db76cd496f..2f40f09aaec5 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -137,7 +137,7 @@ static inline int rt_policy(int policy) static inline int dl_policy(int policy) { - return policy == SCHED_DEADLINE; + return IS_ENABLED(CONFIG_SCHED_DL) && policy == SCHED_DEADLINE; } static inline bool valid_policy(int policy) { @@ -158,11 +158,15 @@ static inline int task_has_dl_policy(struct task_struct *p) /* * Tells if entity @a should preempt entity @b. */ +#ifdef CONFIG_SCHED_DL static inline bool dl_entity_preempt(struct sched_dl_entity *a, struct sched_dl_entity *b) { return dl_time_before(a->deadline, b->deadline); } +#else +#define dl_entity_preempt(a, b) false +#endif /* * This is the priority-queue data structure of the RT scheduling class: @@ -247,7 +251,6 @@ bool __dl_overflow(struct dl_bw *dl_b, int cpus, u64 old_bw, u64 new_bw) } void dl_change_utilization(struct task_struct *p, u64 new_bw); -extern void init_dl_bw(struct dl_bw *dl_b); extern int sched_dl_global_validate(void); extern void sched_dl_do_global(void); extern int sched_dl_overflow(struct task_struct *p, int policy, @@ -261,7 +264,27 @@ extern int dl_task_can_attach(struct task_struct *p, const struct cpumask *cs_cpus_allowed); extern int dl_cpuset_cpumask_can_shrink(const struct cpumask *cur, const struct cpumask *trial); +extern struct dl_bandwidth def_dl_bandwidth; + +struct dl_rq; + +#ifdef CONFIG_SCHED_DL +#define dl_nr_running(rq) (rq)->dl.dl_nr_running +#define dl_boosted(tsk) (tsk)->dl.dl_boosted extern bool dl_cpu_busy(unsigned int cpu); +extern void init_dl_bw(struct dl_bw *dl_b); +extern void init_sched_dl_class(void); +extern void init_dl_bandwidth(struct dl_bandwidth *dl_b, u64 period, u64 runtime); +extern void init_dl_rq(struct dl_rq *dl_rq); +#else +#define dl_nr_running(rq) 0 +#define dl_boosted(tsk) (*(int *)0) +#define dl_cpu_busy(cpu) false +#define init_dl_bw(dl_b) do { } while (0) +#define init_sched_dl_class() do { } while (0) +#define init_dl_bandwidth(...) do { } while (0) +#define init_dl_rq(dl_rq) do { } while (0) +#endif #ifdef CONFIG_CGROUP_SCHED @@ -694,7 +717,9 @@ struct rq { struct cfs_rq cfs; struct rt_rq rt; +#ifdef CONFIG_SCHED_DL struct dl_rq dl; +#endif #ifdef CONFIG_FAIR_GROUP_SCHED /* list of leaf cfs_rq on this cpu: */ @@ -1472,9 +1497,12 @@ static inline void set_curr_task(struct rq *rq, struct task_struct *curr) #ifdef CONFIG_SMP #define sched_class_highest (&stop_sched_class) -#else +#elif defined(CONFIG_SCHED_DL) #define sched_class_highest (&dl_sched_class) +#else +#define sched_class_highest (&rt_sched_class) #endif + #define for_each_class(class) \ for (class = sched_class_highest; class; class = class->next) @@ -1525,7 +1553,6 @@ extern void sysrq_sched_debug_show(void); extern void sched_init_granularity(void); extern void update_max_interval(void); -extern void init_sched_dl_class(void); extern void init_sched_rt_class(void); extern void init_sched_fair_class(void); @@ -1535,8 +1562,6 @@ extern void resched_cpu(int cpu); extern struct rt_bandwidth def_rt_bandwidth; extern void init_rt_bandwidth(struct rt_bandwidth *rt_b, u64 period, u64 runtime); -extern struct dl_bandwidth def_dl_bandwidth; -extern void init_dl_bandwidth(struct dl_bandwidth *dl_b, u64 period, u64 runtime); extern void init_dl_task_timer(struct sched_dl_entity *dl_se); extern void init_dl_inactive_task_timer(struct sched_dl_entity *dl_se); extern void init_dl_rq_bw_ratio(struct dl_rq *dl_rq); @@ -1969,7 +1994,6 @@ print_numa_stats(struct seq_file *m, int node, unsigned long tsf, extern void init_cfs_rq(struct cfs_rq *cfs_rq); extern void init_rt_rq(struct rt_rq *rt_rq); -extern void init_dl_rq(struct dl_rq *dl_rq); extern void cfs_bandwidth_usage_inc(void); extern void cfs_bandwidth_usage_dec(void); @@ -1988,7 +2012,11 @@ static inline void nohz_balance_exit_idle(unsigned int cpu) { } #endif -#ifdef CONFIG_SMP +#if !defined(CONFIG_SCHED_DL) +void __dl_update(struct dl_bw *dl_b, s64 bw) +{ +} +#elif defined(CONFIG_SMP) static inline void __dl_update(struct dl_bw *dl_b, s64 bw) { |