diff options
| -rw-r--r-- | kernel/padata.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/kernel/padata.c b/kernel/padata.c index 5b44d0fa358..1209a17b971 100644 --- a/kernel/padata.c +++ b/kernel/padata.c @@ -570,6 +570,7 @@ void padata_stop(struct padata_instance *pinst) } EXPORT_SYMBOL(padata_stop); +#ifdef CONFIG_HOTPLUG_CPU static int padata_cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu) { @@ -621,6 +622,7 @@ static int padata_cpu_callback(struct notifier_block *nfb, return NOTIFY_OK; } +#endif /* * padata_alloc - allocate and initialize a padata instance @@ -631,7 +633,6 @@ static int padata_cpu_callback(struct notifier_block *nfb, struct padata_instance *padata_alloc(const struct cpumask *cpumask, struct workqueue_struct *wq) { - int err; struct padata_instance *pinst; struct parallel_data *pd; @@ -654,18 +655,16 @@ struct padata_instance *padata_alloc(const struct cpumask *cpumask, pinst->flags = 0; +#ifdef CONFIG_HOTPLUG_CPU pinst->cpu_notifier.notifier_call = padata_cpu_callback; pinst->cpu_notifier.priority = 0; - err = register_hotcpu_notifier(&pinst->cpu_notifier); - if (err) - goto err_free_cpumask; + register_hotcpu_notifier(&pinst->cpu_notifier); +#endif mutex_init(&pinst->lock); return pinst; -err_free_cpumask: - free_cpumask_var(pinst->cpumask); err_free_pd: padata_free_pd(pd); err_free_inst: @@ -689,7 +688,9 @@ void padata_free(struct padata_instance *pinst) while (atomic_read(&pinst->pd->refcnt) != 0) yield(); +#ifdef CONFIG_HOTPLUG_CPU unregister_hotcpu_notifier(&pinst->cpu_notifier); +#endif padata_free_pd(pinst->pd); free_cpumask_var(pinst->cpumask); kfree(pinst); |