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Merge "cpufreq: interactive: Fix refcount for migration notification"

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Linux Build Service Account 2014-12-16 07:13:27 -08:00 committed by Gerrit - the friendly Code Review server
parent 3c6d8fd5f5 77cfde52b9
commit 757bdfb5a5
1 changed files with 11 additions and 12 deletions
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23
drivers/cpufreq/cpufreq_interactive.c
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@ -1196,7 +1196,7 @@ static int cpufreq_interactive_enable_sched_input(
mutex_lock(&sched_lock);
set_window_count++;
if (set_window_count != 1) {
if (set_window_count > 1) {
for_each_possible_cpu(j) {
t = per_cpu(cpuinfo, j).cached_tunables;
if (t && t->use_sched_load) {
@ -1205,22 +1205,21 @@ static int cpufreq_interactive_enable_sched_input(
break;
}
}
goto out;
} else {
rc = set_window_helper(tunables);
if (rc) {
pr_err("%s: Failed to set sched window\n", __func__);
set_window_count--;
goto out;
}
sched_set_io_is_busy(tunables->io_is_busy);
}
rc = set_window_helper(tunables);
if (rc) {
pr_err("%s: Failed to set sched window\n", __func__);
set_window_count--;
goto out;
}
sched_set_io_is_busy(tunables->io_is_busy);
if (!tunables->use_migration_notif)
goto out;
migration_register_count++;
if (migration_register_count != 1)
if (migration_register_count > 1)
goto out;
else
atomic_notifier_chain_register(&load_alert_notifier_head,
@ -1237,7 +1236,7 @@ static int cpufreq_interactive_disable_sched_input(
if (tunables->use_migration_notif) {
migration_register_count--;
if (!migration_register_count)
if (migration_register_count < 1)
atomic_notifier_chain_unregister(
&load_alert_notifier_head,
&load_notifier_block);