| /* | |
| * Only give sleepers 50% of their service deficit. This allows | |
| * them to run sooner, but does not allow tons of sleepers to | |
| * rip the spread apart. | |
| */ | |
| SCHED_FEAT(GENTLE_FAIR_SLEEPERS, true) | |
| /* | |
| * Place new tasks ahead so that they do not starve already running | |
| * tasks | |
| */ | |
| SCHED_FEAT(START_DEBIT, true) | |
| /* | |
| * Prefer to schedule the task we woke last (assuming it failed | |
| * wakeup-preemption), since its likely going to consume data we | |
| * touched, increases cache locality. | |
| */ | |
| SCHED_FEAT(NEXT_BUDDY, false) | |
| /* | |
| * Prefer to schedule the task that ran last (when we did | |
| * wake-preempt) as that likely will touch the same data, increases | |
| * cache locality. | |
| */ | |
| SCHED_FEAT(LAST_BUDDY, true) | |
| /* | |
| * Consider buddies to be cache hot, decreases the likelyness of a | |
| * cache buddy being migrated away, increases cache locality. | |
| */ | |
| SCHED_FEAT(CACHE_HOT_BUDDY, true) | |
| /* | |
| * Allow wakeup-time preemption of the current task: | |
| */ | |
| SCHED_FEAT(WAKEUP_PREEMPTION, true) | |
| /* | |
| * Use arch dependent cpu power functions | |
| */ | |
| SCHED_FEAT(ARCH_POWER, true) | |
| SCHED_FEAT(HRTICK, false) | |
| SCHED_FEAT(DOUBLE_TICK, false) | |
| SCHED_FEAT(LB_BIAS, true) | |
| /* | |
| * Decrement CPU power based on time not spent running tasks | |
| */ | |
| SCHED_FEAT(NONTASK_POWER, true) | |
| /* | |
| * Queue remote wakeups on the target CPU and process them | |
| * using the scheduler IPI. Reduces rq->lock contention/bounces. | |
| */ | |
| SCHED_FEAT(TTWU_QUEUE, true) | |
| SCHED_FEAT(FORCE_SD_OVERLAP, false) | |
| SCHED_FEAT(RT_RUNTIME_SHARE, true) | |
| SCHED_FEAT(LB_MIN, false) | |
| /* | |
| * Apply the automatic NUMA scheduling policy. Enabled automatically | |
| * at runtime if running on a NUMA machine. Can be controlled via | |
| * numa_balancing=. Allow PTE scanning to be forced on UMA machines | |
| * for debugging the core machinery. | |
| */ | |
| #ifdef CONFIG_NUMA_BALANCING | |
| SCHED_FEAT(NUMA, false) | |
| SCHED_FEAT(NUMA_FORCE, false) | |
| #endif |