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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/kernel/sched/features.h
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@@ -39,18 +39,25 @@
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 SCHED_FEAT(HRTICK, false)
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 SCHED_FEAT(DOUBLE_TICK, false)
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-SCHED_FEAT(LB_BIAS, true)
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 /*
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  * Decrement CPU capacity based on time not spent running tasks
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  */
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 SCHED_FEAT(NONTASK_CAPACITY, true)
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+#ifdef CONFIG_PREEMPT_RT
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+SCHED_FEAT(TTWU_QUEUE, false)
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+# ifdef CONFIG_PREEMPT_LAZY
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+SCHED_FEAT(PREEMPT_LAZY, true)
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+# endif
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+#else
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+
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 /*
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  * Queue remote wakeups on the target CPU and process them
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  * using the scheduler IPI. Reduces rq->lock contention/bounces.
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  */
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 SCHED_FEAT(TTWU_QUEUE, true)
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+#endif
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 /*
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  * When doing wakeups, attempt to limit superfluous scans of the LLC domain.
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@@ -78,7 +85,7 @@
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 SCHED_FEAT(RT_PUSH_IPI, true)
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 #endif
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-SCHED_FEAT(RT_RUNTIME_SHARE, true)
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+SCHED_FEAT(RT_RUNTIME_SHARE, false)
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 SCHED_FEAT(LB_MIN, false)
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 SCHED_FEAT(ATTACH_AGE_LOAD, true)
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@@ -92,32 +99,5 @@
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 SCHED_FEAT(UTIL_EST, true)
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 SCHED_FEAT(UTIL_EST_FASTUP, true)
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-/*
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- * Fast pre-selection of CPU candidates for EAS.
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- */
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-SCHED_FEAT(FIND_BEST_TARGET, false)
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-
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-/*
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- * Energy aware scheduling algorithm choices:
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- * EAS_PREFER_IDLE
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- *   Direct tasks in a schedtune.prefer_idle=1 group through
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- *   the EAS path for wakeup task placement. Otherwise, put
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- *   those tasks through the mainline slow path.
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- */
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-SCHED_FEAT(EAS_PREFER_IDLE, true)
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-
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-/*
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- * Request max frequency from schedutil whenever a RT task is running.
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- */
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-SCHED_FEAT(SUGOV_RT_MAX_FREQ, false)
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-
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-/*
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- * Apply schedtune boost hold to tasks of all sched classes.
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- * If enabled, schedtune will hold the boost applied to a CPU
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- * for 50ms regardless of task activation - if the task is
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- * still running 50ms later, the boost hold expires and schedtune
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- * boost will expire immediately the task stops.
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- * If disabled, this behaviour will only apply to tasks of the
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- * RT class.
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- */
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-SCHED_FEAT(SCHEDTUNE_BOOST_HOLD_ALL, false)
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+SCHED_FEAT(ALT_PERIOD, true)
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+SCHED_FEAT(BASE_SLICE, true)