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core_ctl: Handle only CPU_ONLINE and CPU_DEAD notifications

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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>
This commit is contained in:
Pavankumar Kondeti 2017-04-13 18:58:56 +05:30
parent a76d9370e8
commit d0b971c53d
1 changed files with 4 additions and 3 deletions
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7
kernel/sched/core_ctl.c
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@ -887,10 +887,9 @@ static int __ref cpu_callback(struct notifier_block *nfb,
struct cpu_data *state = &per_cpu(cpu_state, cpu); struct cpu_data *state = &per_cpu(cpu_state, cpu);
struct cluster_data *cluster = state->cluster; struct cluster_data *cluster = state->cluster;
unsigned int need; unsigned int need;
int ret = NOTIFY_OK;
if (unlikely(!cluster || !cluster->inited)) if (unlikely(!cluster || !cluster->inited))
return NOTIFY_OK; return NOTIFY_DONE;
switch (action & ~CPU_TASKS_FROZEN) { switch (action & ~CPU_TASKS_FROZEN) {
case CPU_ONLINE: case CPU_ONLINE:
@ -921,13 +920,15 @@ static int __ref cpu_callback(struct notifier_block *nfb,
state->busy = 0; state->busy = 0;
cluster->active_cpus = get_active_cpu_count(cluster); cluster->active_cpus = get_active_cpu_count(cluster);
break; break;
default:
return NOTIFY_DONE;
} }
need = apply_limits(cluster, cluster->need_cpus); need = apply_limits(cluster, cluster->need_cpus);
if (adjustment_possible(cluster, need)) if (adjustment_possible(cluster, need))
wake_up_core_ctl_thread(cluster); wake_up_core_ctl_thread(cluster);
return ret; return NOTIFY_OK;
} }
static struct notifier_block __refdata cpu_notifier = { static struct notifier_block __refdata cpu_notifier = {