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sched: walt: handle support for single and two cluster system

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Update walt_newidle load balance to support single and two
cluster topology.

Change-Id: Ic2bbbe7a273267c1a7aa340f9908b5e5325d21ba
Signed-off-by: Ashay Jaiswal <quic_ashayj@quicinc.com>
This commit is contained in:
Ashay Jaiswal 2022-04-12 12:42:13 +05:30 committed by Rishabh Bhatnagar
parent 336aaa54a7
commit 4bb9750f22
1 changed files with 21 additions and 1 deletions
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22
kernel/sched/walt/walt_lb.c
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@ -770,7 +770,7 @@ static void walt_newidle_balance(void *unused, struct rq *this_rq,
int order_index;
int busy_cpu = -1;
bool enough_idle = (this_rq->avg_idle > NEWIDLE_BALANCE_THRESHOLD);
bool help_min_cap = false;
bool help_min_cap = false, find_next_cluster = false;
int first_idle;
int has_misfit = 0;
@ -828,6 +828,26 @@ static void walt_newidle_balance(void *unused, struct rq *this_rq,
* can be queued remotely, so keep a check on nr_running
* and bail out.
*/
if (num_sched_clusters <= 2) {
busy_cpu = walt_lb_find_busiest_cpu(this_cpu, &cpu_array[order_index][0],
&has_misfit);
if (busy_cpu != -1)
goto found_busy_cpu;
if (num_sched_clusters == 2) {
has_misfit = false;
find_next_cluster = (order_index == 0) ? enough_idle : 1;
if (find_next_cluster) {
busy_cpu = walt_lb_find_busiest_cpu(this_cpu,
&cpu_array[order_index][1], &has_misfit);
if (busy_cpu != -1 && (enough_idle || has_misfit))
goto found_busy_cpu;
}
}
goto unlock;
}
if (order_index == 0) {
busy_cpu = walt_lb_find_busiest_cpu(this_cpu, &cpu_array[order_index][0],
&has_misfit);