Re: [patch V2 08/10] timer: Implement the hierarchical pull model

Peter Zijlstra
2017-04-19T07:34:44Z

On Tue, Apr 18, 2017 at 01:11:10PM +0200, Thomas Gleixner wrote:
> +struct tmigr_group {
> + raw_spinlock_t lock;
> + unsigned int active;
> + unsigned int migrator;
> + struct timerqueue_head events;
> + struct tmigr_event groupevt;
> + struct tmigr_group *parent;
> + cpumask_var_t cpus;
> + struct list_head list;
> + unsigned int level;
> + unsigned int numa_node;
> + unsigned int num_childs;
> +};

If you place the cpumask at the end, as a 0 sized array, you can avoid a
second allocation.