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sched/walt: Improve the scheduler

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This change is for general scheduler improvement.

Change-Id: I8f521dfd31ff1c8cc1f16805e4e0ac78228d9383
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
This commit is contained in:
Pavankumar Kondeti 2021-01-28 09:22:13 +05:30 committed by Rishabh Bhatnagar
parent 79b57c0e1c
commit a699cd9369
3 changed files with 13 additions and 6 deletions
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8
kernel/sched/walt/sysctl.c
View File

@ -262,7 +262,8 @@ static int sched_task_handler(struct ctl_table *table, int write,
1000000UL);
break;
case LOW_LATENCY:
pid_and_val[1] = wts->low_latency;
pid_and_val[1] = wts->low_latency &
WALT_LOW_LATENCY_PROCFS;
break;
default:
ret = -EINVAL;
@ -323,7 +324,10 @@ static int sched_task_handler(struct ctl_table *table, int write,
wts->boost_expires = sched_clock() + wts->boost_period;
break;
case LOW_LATENCY:
wts->low_latency = val;
if (val)
wts->low_latency |= WALT_LOW_LATENCY_PROCFS;
else
wts->low_latency &= ~WALT_LOW_LATENCY_PROCFS;
break;
default:
ret = -EINVAL;

5
kernel/sched/walt/walt.h
View File

@ -69,6 +69,9 @@ enum task_boost_type {
#define RAVG_HIST_SIZE_MAX 5
#define NUM_BUSY_BUCKETS 10
#define WALT_LOW_LATENCY_PROCFS BIT(0)
#define WALT_LOW_LATENCY_BINDER BIT(1)
struct walt_task_struct {
/*
* 'mark_start' marks the beginning of an event (task waking up, task
@ -120,7 +123,7 @@ struct walt_task_struct {
bool wake_up_idle;
bool misfit;
bool rtg_high_prio;
bool low_latency;
u8 low_latency;
u64 boost_period;
u64 boost_expires;
u64 last_sleep_ts;

6
kernel/sched/walt/walt_cfs.c
View File

@ -784,7 +784,7 @@ static void walt_binder_low_latency_set(void *unused, struct task_struct *task)
if (task && current->signal &&
(current->signal->oom_score_adj == 0) &&
(current->prio < DEFAULT_PRIO))
wts->low_latency = true;
wts->low_latency |= WALT_LOW_LATENCY_BINDER;
}
static void walt_binder_low_latency_clear(void *unused, struct binder_transaction *t)
@ -793,8 +793,8 @@ static void walt_binder_low_latency_clear(void *unused, struct binder_transactio
if (static_branch_unlikely(&walt_disabled))
return;
if (wts->low_latency)
wts->low_latency = false;
if (wts->low_latency & WALT_LOW_LATENCY_BINDER)
wts->low_latency &= ~WALT_LOW_LATENCY_BINDER;
}
void walt_cfs_init(void)