diff options
Diffstat (limited to 'kernel/padata.c')
| -rw-r--r-- | kernel/padata.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/kernel/padata.c b/kernel/padata.c index 9a17922ec436..8a362923c488 100644 --- a/kernel/padata.c +++ b/kernel/padata.c @@ -955,8 +955,6 @@ static struct kobj_type padata_attr_type = { * @name: used to identify the instance * @pcpumask: cpumask that will be used for padata parallelization * @cbcpumask: cpumask that will be used for padata serialization - * - * Must be called from a cpus_read_lock() protected region */ static struct padata_instance *padata_alloc(const char *name, const struct cpumask *pcpumask, @@ -974,11 +972,13 @@ static struct padata_instance *padata_alloc(const char *name, if (!pinst->wq) goto err_free_inst; + get_online_cpus(); + if (!alloc_cpumask_var(&pinst->cpumask.pcpu, GFP_KERNEL)) - goto err_free_wq; + goto err_put_cpus; if (!alloc_cpumask_var(&pinst->cpumask.cbcpu, GFP_KERNEL)) { free_cpumask_var(pinst->cpumask.pcpu); - goto err_free_wq; + goto err_put_cpus; } if (!padata_validate_cpumask(pinst, pcpumask) || !padata_validate_cpumask(pinst, cbcpumask)) @@ -1002,12 +1002,16 @@ static struct padata_instance *padata_alloc(const char *name, #ifdef CONFIG_HOTPLUG_CPU cpuhp_state_add_instance_nocalls_cpuslocked(hp_online, &pinst->node); #endif + + put_online_cpus(); + return pinst; err_free_masks: free_cpumask_var(pinst->cpumask.pcpu); free_cpumask_var(pinst->cpumask.cbcpu); -err_free_wq: +err_put_cpus: + put_online_cpus(); destroy_workqueue(pinst->wq); err_free_inst: kfree(pinst); @@ -1021,12 +1025,9 @@ err: * parallel workers. * * @name: used to identify the instance - * - * Must be called from a cpus_read_lock() protected region */ struct padata_instance *padata_alloc_possible(const char *name) { - lockdep_assert_cpus_held(); return padata_alloc(name, cpu_possible_mask, cpu_possible_mask); } EXPORT_SYMBOL(padata_alloc_possible); |