From fedb670f02889af0dd02ca3aad498ae09e3c9280 Mon Sep 17 00:00:00 2001 From: Valentin Schneider Date: Wed, 11 Dec 2019 11:38:48 +0000 Subject: [PATCH] UPSTREAM: sched/uclamp: Make uclamp util helpers use and return UL values Vincent pointed out recently that the canonical type for utilization values is 'unsigned long'. Internally uclamp uses 'unsigned int' values for cache optimization, but this doesn't have to be exported to its users. Make the uclamp helpers that deal with utilization use and return unsigned long values. Bug: 120440300 Tested-By: Dietmar Eggemann Signed-off-by: Valentin Schneider Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Quentin Perret Reviewed-by: Vincent Guittot Reviewed-by: Dietmar Eggemann Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Link: https://lkml.kernel.org/r/20191211113851.24241-3-valentin.schneider@arm.com Signed-off-by: Ingo Molnar (cherry picked from commit 686516b55e98edf18c2a02d36aaaa6f4c0f6c39c) Signed-off-by: Quentin Perret Change-Id: I8c3a191ef6ebae6b76521321ee911e9b9e4eda45 --- kernel/sched/core.c | 6 +++--- kernel/sched/sched.h | 14 +++++++------- 2 files changed, 10 insertions(+), 10 deletions(-) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index acba24c6db34..815a04b288ab 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -919,17 +919,17 @@ uclamp_eff_get(struct task_struct *p, enum uclamp_id clamp_id) return uc_req; } -unsigned int uclamp_eff_value(struct task_struct *p, enum uclamp_id clamp_id) +unsigned long uclamp_eff_value(struct task_struct *p, enum uclamp_id clamp_id) { struct uclamp_se uc_eff; /* Task currently refcounted: use back-annotated (effective) value */ if (p->uclamp[clamp_id].active) - return p->uclamp[clamp_id].value; + return (unsigned long)p->uclamp[clamp_id].value; uc_eff = uclamp_eff_get(p, clamp_id); - return uc_eff.value; + return (unsigned long)uc_eff.value; } /* diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 207bfe6e6f4d..73e0a06db306 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -2328,14 +2328,14 @@ static inline void cpufreq_update_util(struct rq *rq, unsigned int flags) {} #endif /* CONFIG_CPU_FREQ */ #ifdef CONFIG_UCLAMP_TASK -unsigned int uclamp_eff_value(struct task_struct *p, enum uclamp_id clamp_id); +unsigned long uclamp_eff_value(struct task_struct *p, enum uclamp_id clamp_id); static __always_inline -unsigned int uclamp_util_with(struct rq *rq, unsigned int util, - struct task_struct *p) +unsigned long uclamp_util_with(struct rq *rq, unsigned long util, + struct task_struct *p) { - unsigned int min_util = READ_ONCE(rq->uclamp[UCLAMP_MIN].value); - unsigned int max_util = READ_ONCE(rq->uclamp[UCLAMP_MAX].value); + unsigned long min_util = READ_ONCE(rq->uclamp[UCLAMP_MIN].value); + unsigned long max_util = READ_ONCE(rq->uclamp[UCLAMP_MAX].value); if (p) { min_util = max(min_util, uclamp_eff_value(p, UCLAMP_MIN)); @@ -2358,8 +2358,8 @@ static inline bool uclamp_boosted(struct task_struct *p) return uclamp_eff_value(p, UCLAMP_MIN) > 0; } #else /* CONFIG_UCLAMP_TASK */ -static inline unsigned int uclamp_util_with(struct rq *rq, unsigned int util, - struct task_struct *p) +static inline unsigned long uclamp_util_with(struct rq *rq, unsigned long util, + struct task_struct *p) { return util; }