diff --git a/kernel/sched/core.c b/kernel/sched/core.c index b2fa01eecaf2..5e81c7a6ac48 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -1216,8 +1216,12 @@ static void __setscheduler_uclamp(struct task_struct *p, continue; /* By default, RT tasks always get 100% boost */ - if (unlikely(rt_task(p) && clamp_id == UCLAMP_MIN)) + if (sched_feat(SUGOV_RT_MAX_FREQ) && + unlikely(rt_task(p) && + clamp_id == UCLAMP_MIN)) { + clamp_value = uclamp_none(UCLAMP_MAX); + } uclamp_se_set(uc_se, clamp_value, false); } @@ -1250,8 +1254,12 @@ static void uclamp_fork(struct task_struct *p) unsigned int clamp_value = uclamp_none(clamp_id); /* By default, RT tasks always get 100% boost */ - if (unlikely(rt_task(p) && clamp_id == UCLAMP_MIN)) + if (sched_feat(SUGOV_RT_MAX_FREQ) && + unlikely(rt_task(p) && + clamp_id == UCLAMP_MIN)) { + clamp_value = uclamp_none(UCLAMP_MAX); + } uclamp_se_set(&p->uclamp_req[clamp_id], clamp_value, false); } diff --git a/kernel/sched/cpufreq_schedutil.c b/kernel/sched/cpufreq_schedutil.c index bfd2ba66d588..5668efdef410 100644 --- a/kernel/sched/cpufreq_schedutil.c +++ b/kernel/sched/cpufreq_schedutil.c @@ -307,7 +307,7 @@ unsigned long schedutil_cpu_util(int cpu, unsigned long util_cfs, unsigned long dl_util, util, irq; struct rq *rq = cpu_rq(cpu); - if (!IS_BUILTIN(CONFIG_UCLAMP_TASK) && + if (!IS_BUILTIN(CONFIG_UCLAMP_TASK) && sched_feat(SUGOV_RT_MAX_FREQ) && type == FREQUENCY_UTIL && rt_rq_is_runnable(&rq->rt)) { return max; } diff --git a/kernel/sched/features.h b/kernel/sched/features.h index 4283e36914f5..9fba55689636 100644 --- a/kernel/sched/features.h +++ b/kernel/sched/features.h @@ -94,3 +94,8 @@ SCHED_FEAT(UTIL_EST, true) * Fast pre-selection of CPU candidates for EAS. */ SCHED_FEAT(FIND_BEST_TARGET, true) + +/* + * Request max frequency from schedutil whenever a RT task is running. + */ +SCHED_FEAT(SUGOV_RT_MAX_FREQ, false)