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Merge "sched/walt: consider average max_nr when compare max_nr"

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qctecmdr 2021-05-06 22:22:59 -07:00 • committed by Gerrit - the friendly Code Review server
commit 36d9ba8f4c
1 changed files with 23 additions and 1 deletions
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24
kernel/sched/walt/core_ctl.c
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@ -18,6 +18,7 @@
#include <trace/events/sched.h>
#include "qc_vas.h"
#define MAX_NR_HISTORY_COUNT 2
struct cluster_data {
bool inited;
unsigned int min_cpus;
@ -33,6 +34,8 @@ struct cluster_data {
unsigned int need_cpus;
unsigned int task_thres;
unsigned int max_nr;
unsigned int max_nr_avg;
unsigned int max_nr_history[MAX_NR_HISTORY_COUNT];
unsigned int nr_prev_assist;
unsigned int nr_prev_assist_thresh;
s64 need_ts;
@ -545,6 +548,23 @@ static int compute_cluster_max_nr(int index)
return max_nr;
}
static int compute_cluster_average_max_nr(int index, unsigned int max_nr)
{
struct cluster_data *cluster = &cluster_state[index];
u32 *hist = &cluster->max_nr_history[0];
int idx, sum = 0;
for (idx = MAX_NR_HISTORY_COUNT - 1; idx > 0; idx--) {
hist[idx] = hist[idx-1];
sum += hist[idx];
}
hist[0] = max_nr;
sum += hist[0];
return DIV_ROUND_UP(sum, MAX_NR_HISTORY_COUNT);
}
static int cluster_real_big_tasks(int index)
{
int nr_big = 0;
@ -681,6 +701,7 @@ static void update_running_avg(void)
cluster->nrrun = nr_need + prev_misfit_need;
cluster->max_nr = compute_cluster_max_nr(index);
cluster->max_nr_avg = compute_cluster_average_max_nr(index, cluster->max_nr);
cluster->nr_prev_assist = prev_cluster_nr_need_assist(index);
cluster->strict_nrrun = compute_cluster_nr_strict_need(index);
@ -723,7 +744,8 @@ static unsigned int apply_task_need(const struct cluster_data *cluster,
* If any CPU has more than MAX_NR_THRESHOLD in the last
* window, bring another CPU to help out.
*/
if (cluster->max_nr > MAX_NR_THRESHOLD)
if (cluster->max_nr > MAX_NR_THRESHOLD &&
cluster->max_nr_avg > MAX_NR_THRESHOLD)
new_need = new_need + 1;
/*