core_ctl: Handle only CPU_ONLINE and CPU_DEAD notifications

We are interested in only CPU_ONLINE and CPU_DEAD notifications. Don't
do anything when other notifications arrive.

Change-Id: Iea2e0e1c93e67ef278ee7c5a9813fbab6cea5c74
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>

diff --git a/kernel/sched/core_ctl.c b/kernel/sched/core_ctl.c
index fd7290a..ccf6725 100644 (file)
--- a/kernel/sched/core_ctl.c
+++ b/kernel/sched/core_ctl.c
@@ -887,10 +887,9 @@ static int __ref cpu_callback(struct notifier_block *nfb,
        struct cpu_data *state = &per_cpu(cpu_state, cpu);
        struct cluster_data *cluster = state->cluster;
        unsigned int need;
-       int ret = NOTIFY_OK;
 
        if (unlikely(!cluster || !cluster->inited))
-               return NOTIFY_OK;
+               return NOTIFY_DONE;
 
        switch (action & ~CPU_TASKS_FROZEN) {
        case CPU_ONLINE:
@@ -921,13 +920,15 @@ static int __ref cpu_callback(struct notifier_block *nfb,
                state->busy = 0;
                cluster->active_cpus = get_active_cpu_count(cluster);
                break;
+       default:
+               return NOTIFY_DONE;
        }
 
        need = apply_limits(cluster, cluster->need_cpus);
        if (adjustment_possible(cluster, need))
                wake_up_core_ctl_thread(cluster);
 
-       return ret;
+       return NOTIFY_OK;
 }
 
 static struct notifier_block __refdata cpu_notifier = {