github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-08 06:25:52 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

ANDROID: sched: Introduce uclamp latency and boost wrapper

Browse Source 
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: Patrick Bellasi <patrick.bellasi@arm.com>
Signed-off-by: Quentin Perret <quentin.perret@arm.com>
This commit is contained in:
Quentin Perret 2019-07-30 13:58:29 +01:00 committed by Quentin Perret
parent c28f9d3945
commit 0e00b6f9dd
1 changed files with 28 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
kernel/sched/sched.h
View File

@ -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