Re: [PATCH v2 09/16] dmaengine: bcm-sba-raid: Improve sba_issue_pending() run duration

[Anup Patel]

On Thu, Aug 17, 2017 at 12:06 PM, Vinod Koul <vinod.koul@xxxxxxxxx> wrote:
> On Tue, Aug 01, 2017 at 04:07:53PM +0530, Anup Patel wrote:
>> The pending sba_request list can become very long in real-life usage
>> (e.g. setting up RAID array) which can cause sba_issue_pending() to
>> run for long duration.
>
> that raises the warning flags.. Even if we have a long pending list why
> would issue_pending run for long. The purpose of the issue_pending() is to
> submit a txn if idle and return. The interrupt and tasklet shall push the
> subsequent txn to hardware...

Yes, we are doing very similar thing in PATCH13 by further
simplifying sba_process_deferred_requests()

Regards,
Anup