schedutil: limit up/down init rate

PD#165090: schedutil: limit up/down min rate

Change-Id: Ib3aa6653d56056298df05bdede2e2bf6aea46882
Signed-off-by: jianxin.pan <jianxin.pan@amlogic.com>

diff --git a/kernel/sched/cpufreq_schedutil.c b/kernel/sched/cpufreq_schedutil.c
index 3edb2bb..25c922f 100644 (file)
--- a/kernel/sched/cpufreq_schedutil.c
+++ b/kernel/sched/cpufreq_schedutil.c
@@ -19,6 +19,19 @@
 #include "sched.h"
 #include "tune.h"
 
+#ifdef CONFIG_AMLOGIC_MODIFY
+#define UP_MAX_TIME    1000
+#define DOWN_MIN_TIME  80000
+static void sugov_up_down_first_limit(unsigned int *up_us,
+               unsigned int *down_us)
+{
+       if (*up_us > UP_MAX_TIME)
+               *up_us = UP_MAX_TIME;
+       if (*down_us < DOWN_MIN_TIME)
+               *down_us = DOWN_MIN_TIME;
+}
+#endif
+
 unsigned long boosted_cpu_util(int cpu);
 
 /* Stub out fast switch routines present on mainline to reduce the backport
@@ -647,6 +660,10 @@ static int sugov_init(struct cpufreq_policy *policy)
                 }
        }
 
+#ifdef CONFIG_AMLOGIC_MODIFY
+       sugov_up_down_first_limit(&tunables->up_rate_limit_us,
+                       &tunables->down_rate_limit_us);
+#endif
        policy->governor_data = sg_policy;
        sg_policy->tunables = tunables;