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sched/walt/walt_rt: Improve the scheduler

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This change is for general scheduler improvemnts.

Change-Id: I8e6d7afe12387d86f3721c6fd880812ba86d885e
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
[satyap@codeaurora.org: port to msm-5.10]
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
This commit is contained in:
Pavankumar Kondeti 2021-08-03 04:27:55 -07:00 committed by Rishabh Bhatnagar
parent 452807ae7e
commit 5dc9dadb50
1 changed files with 19 additions and 2 deletions
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21
kernel/sched/walt/walt_rt.c
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@ -23,6 +23,7 @@ static void walt_rt_energy_aware_wake_cpu(void *unused, struct task_struct *task
bool boost_on_big = rt_boost_on_big();
int cluster;
int order_index = (boost_on_big && num_sched_clusters > 1) ? 1 : 0;
bool best_cpu_lt = true;
if (unlikely(walt_disabled))
return;
@ -33,6 +34,8 @@ static void walt_rt_energy_aware_wake_cpu(void *unused, struct task_struct *task
rcu_read_lock();
for (cluster = 0; cluster < num_sched_clusters; cluster++) {
for_each_cpu_and(cpu, lowest_mask, &cpu_array[order_index][cluster]) {
bool lt;
trace_sched_cpu_util(cpu);
if (!cpu_active(cpu))
@ -46,8 +49,21 @@ static void walt_rt_energy_aware_wake_cpu(void *unused, struct task_struct *task
util = cpu_util(cpu);
/* Find the least loaded CPU */
if (util > best_cpu_util)
lt = (walt_low_latency_task(cpu_rq(cpu)->curr) ||
walt_nr_rtg_high_prio(cpu));
/*
* When the best is suitable and the current is not,
* skip it
*/
if (lt && !best_cpu_lt)
continue;
/*
* Either both are sutilable or unsuitable, load takes
* precedence.
*/
if (!(best_cpu_lt ^ lt) && (util > best_cpu_util))
continue;
/*
@ -80,6 +96,7 @@ static void walt_rt_energy_aware_wake_cpu(void *unused, struct task_struct *task
best_cpu_util_cum = util_cum;
best_cpu_util = util;
*best_cpu = cpu;
best_cpu_lt = lt;
}
if (*best_cpu != -1)