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Commit 0e00b6f9 authored by Quentin Perret's avatar Quentin Perret Committed by Quentin Perret
Browse files

ANDROID: sched: Introduce uclamp latency and boost wrapper 



Introduce a simple helper to read the latency_sensitive flag from a
task. It is called uclamp_latency_sensitive() to match the API
proposed by Patrick.

While at it, introduce uclamp_boosted() which returns true only when a
task has a non-null min-clamp.

Change-Id: I5fc747da8b58625257a6604a3c88487b657fbe7a
Suggested-by: default avatarPatrick Bellasi <patrick.bellasi@arm.com>
Signed-off-by: default avatarQuentin Perret <quentin.perret@arm.com>
parent c28f9d39

kernel/sched/sched.h

+28 −0
Original line number Diff line number Diff line
@@ -2333,6 +2333,11 @@ static inline unsigned int uclamp_util(struct rq *rq, unsigned int util) 
{

	return uclamp_util_with(rq, util, NULL);

}



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)
@@ -2343,8 +2348,31 @@ static inline unsigned int uclamp_util(struct rq *rq, unsigned int util) 
{

	return util;

}

static inline bool uclamp_boosted(struct task_struct *p)

{

	return false;

}

#endif /* CONFIG_UCLAMP_TASK */



#ifdef CONFIG_UCLAMP_TASK_GROUP

static inline bool uclamp_latency_sensitive(struct task_struct *p)

{

	struct cgroup_subsys_state *css = task_css(p, cpu_cgrp_id);

	struct task_group *tg;



	if (!css)

		return false;

	tg = container_of(css, struct task_group, css);



	return tg->latency_sensitive;

}

#else

static inline bool uclamp_latency_sensitive(struct task_struct *p)

{

	return false;

}

#endif /* CONFIG_UCLAMP_TASK_GROUP */



#ifdef arch_scale_freq_capacity

# ifndef arch_scale_freq_invariant

#  define arch_scale_freq_invariant()	true