Re: [PATCH v6 10/12] block: Change the runtime power management approach (1/2)

jianchao.wang
2018-08-10T01:59:36Z

Hi Bart

On 08/10/2018 03:41 AM, Bart Van Assche wrote:
> Instead of scheduling runtime resume of a request queue after a
> request has been queued, schedule asynchronous resume during request
> allocation. The new pm_request_resume() calls occur after
> blk_queue_enter() has increased the q_usage_counter request queue
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> member. This change is needed for a later patch that will make request
> allocation block while the queue status is not RPM_ACTIVE.

Is it "after getting q->q_usage_counter fails" ?
And also this blk_pm_request_resume will not affect the normal path. ;)

Thanks
Jianchao