On Mon, Aug 21, 2017 at 03:49:51PM +0200, Laurent Vivier wrote:
> cpumask is the list of CPUs present when the queue is built.
> If a new CPU is hotplugged, this list is not updated,
> and when the scheduler asks for a CPU id, blk_mq_hctx_next_cpu()
> can return WORK_CPU_UNBOUND.
> And in this case
cpumask is the list of CPUs present when the queue is built.
If a new CPU is hotplugged, this list is not updated,
and when the scheduler asks for a CPU id, blk_mq_hctx_next_cpu()
can return WORK_CPU_UNBOUND.
And in this case _blk_mq_run_hw_queue() can be executed by the new CPU
(that is not presen