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cpufreq: schedutil: fix check for stale utilization values

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Part of the fix from commit d86ab9cff8 ("cpufreq: schedutil: use now
as reference when aggregating shared policy requests") is reversed in
commit 05d2ca242067 ("cpufreq: schedutil: Ignore CPU load older than
WALT window size") due to a porting mistake. Restore it while keeping
the relevant change from the latter patch.

Bug: 117438867
Bug: 144961676
Test: build & boot
Change-Id: I21399be760d7c8e2fff6c158368a285dc6261647
Signed-off-by: Connor O'Brien <connoro@google.com>
Signed-off-by: Jimmy Shiu <jimmyshiu@google.com>
This commit is contained in:
Connor O'Brien 2019-02-11 18:07:54 -08:00 committed by spakkkk
parent 8399535f1b
commit 1a4353af5d
1 changed files with 2 additions and 4 deletions
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6
kernel/sched/cpufreq_schedutil.c
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@ -730,7 +730,6 @@ static unsigned int sugov_next_freq_shared(struct sugov_cpu *sg_cpu, u64 time)
{
struct sugov_policy *sg_policy = sg_cpu->sg_policy;
struct cpufreq_policy *policy = sg_policy->policy;
u64 last_freq_update_time = sg_policy->last_freq_update_time;
unsigned long util = 0, max = 1;
unsigned int j;
@ -746,10 +745,9 @@ static unsigned int sugov_next_freq_shared(struct sugov_cpu *sg_cpu, u64 time)
* enough, don't take the CPU into account as it probably is
* idle now (and clear iowait_boost for it).
*/
delta_ns = last_freq_update_time - j_sg_cpu->last_update;
delta_ns = time - j_sg_cpu->last_update;
if (delta_ns > stale_ns) {
sugov_iowait_reset(j_sg_cpu, last_freq_update_time,
false);
sugov_iowait_reset(j_sg_cpu, time, false);
continue;
}