padata: Use get_online_cpus/put_online_cpus (6751fb3c) · Commits · 戴 / test

kernel/padata.c

+13 −0

Original line number	Diff line number	Diff line
		@@ -441,6 +441,8 @@ int padata_set_cpumask(struct padata_instance *pinst,

		mutex_lock(&pinst->lock);

		get_online_cpus();

		pd = padata_alloc_pd(pinst, cpumask);
		if (!pd) {
		err = -ENOMEM;
		@@ -452,6 +454,8 @@ int padata_set_cpumask(struct padata_instance *pinst,
		padata_replace(pinst, pd);

		out:
		put_online_cpus();

		mutex_unlock(&pinst->lock);

		return err;
		@@ -485,8 +489,10 @@ int padata_add_cpu(struct padata_instance *pinst, int cpu)

		mutex_lock(&pinst->lock);

		get_online_cpus();
		cpumask_set_cpu(cpu, pinst->cpumask);
		err = __padata_add_cpu(pinst, cpu);
		put_online_cpus();

		mutex_unlock(&pinst->lock);

		@@ -521,8 +527,10 @@ int padata_remove_cpu(struct padata_instance *pinst, int cpu)

		mutex_lock(&pinst->lock);

		get_online_cpus();
		cpumask_clear_cpu(cpu, pinst->cpumask);
		err = __padata_remove_cpu(pinst, cpu);
		put_online_cpus();

		mutex_unlock(&pinst->lock);

		@@ -626,6 +634,8 @@ struct padata_instance padata_alloc(const struct cpumask cpumask,
		if (!pinst)
		goto err;

		get_online_cpus();

		pd = padata_alloc_pd(pinst, cpumask);
		if (!pd)
		goto err_free_inst;
		@@ -647,6 +657,8 @@ struct padata_instance padata_alloc(const struct cpumask cpumask,
		register_hotcpu_notifier(&pinst->cpu_notifier);
		#endif

		put_online_cpus();

		mutex_init(&pinst->lock);

		return pinst;
		@@ -655,6 +667,7 @@ err_free_pd:
		padata_free_pd(pd);
		err_free_inst:
		kfree(pinst);
		put_online_cpus();
		err:
		return NULL;
		}