The fast_switch_enabled flag will be used a bit earlier while converting the schedutil governor to use kthread worker.
Prepare for that by moving the call to enable it to the beginning of sugov_init().
Signed-off-by: Viresh Kumar viresh.kumar@linaro.org --- kernel/sched/cpufreq_schedutil.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-)
diff --git a/kernel/sched/cpufreq_schedutil.c b/kernel/sched/cpufreq_schedutil.c index 69e06898997d..ccb2ab89affb 100644 --- a/kernel/sched/cpufreq_schedutil.c +++ b/kernel/sched/cpufreq_schedutil.c @@ -416,9 +416,13 @@ static int sugov_init(struct cpufreq_policy *policy) if (policy->governor_data) return -EBUSY;
+ cpufreq_enable_fast_switch(policy); + sg_policy = sugov_policy_alloc(policy); - if (!sg_policy) - return -ENOMEM; + if (!sg_policy) { + ret = -ENOMEM; + goto disable_fast_switch; + }
mutex_lock(&global_tunables_lock);
@@ -456,8 +460,6 @@ static int sugov_init(struct cpufreq_policy *policy)
out: mutex_unlock(&global_tunables_lock); - - cpufreq_enable_fast_switch(policy); return 0;
fail: @@ -468,6 +470,10 @@ static int sugov_init(struct cpufreq_policy *policy) mutex_unlock(&global_tunables_lock);
sugov_policy_free(sg_policy); + + disable_fast_switch: + cpufreq_disable_fast_switch(policy); + pr_err("initialization failed (error %d)\n", ret); return ret; } @@ -478,8 +484,6 @@ static void sugov_exit(struct cpufreq_policy *policy) struct sugov_tunables *tunables = sg_policy->tunables; unsigned int count;
- cpufreq_disable_fast_switch(policy); - mutex_lock(&global_tunables_lock);
count = gov_attr_set_put(&tunables->attr_set, &sg_policy->tunables_hook); @@ -490,6 +494,7 @@ static void sugov_exit(struct cpufreq_policy *policy) mutex_unlock(&global_tunables_lock);
sugov_policy_free(sg_policy); + cpufreq_disable_fast_switch(policy); }
static int sugov_start(struct cpufreq_policy *policy)