Re: [RFC patch 2/5] smpboot: Provide infrastructure for percpu hotplug threads

[Cyrill Gorcunov <gorcunov@openvz.org>]

On Wed, Jun 13, 2012 at 11:00:54AM -0000, Thomas Gleixner wrote:
> +
> +static int
> +__smpboot_create_thread(struct smp_hotplug_thread *ht, unsigned int cpu)
> +{
> +	struct task_struct *tsk = *per_cpu_ptr(ht->store, cpu);
> +	struct smpboot_thread_data *td;
> +
> +	if (tsk)
> +		return 0;
> +
> +	td = kzalloc_node(sizeof(*td), GFP_KERNEL, cpu_to_node(cpu));
> +	if (!td)
> +		return -ENOMEM;
> +	td->cpu = cpu;
> +	td->ht = ht;
> +
> +	tsk = kthread_create_on_cpu(ht->thread_fn, td, cpu, ht->thread_comm);
> +	if (IS_ERR(tsk))
> +		return PTR_ERR(tsk);
> +

Hi Thomas, I might be missing something obvious but will not we leak td
allocated here if kthread_create_on_cpu failed?

	Cyrill