Re: [PATCH] net: wireless: marvell: libertas: Remove create_workqueue

[Tejun Heo]

On Sat, Jun 04, 2016 at 07:29:01PM +0530, Bhaktipriya Shridhar wrote:
> alloc_workqueue replaces deprecated create_workqueue().
> 
> In if_sdio.c, the workqueue card->workqueue has workitem
> &card->packet_worker, which is mapped to if_sdio_host_to_card_worker.
> The workitem is involved in sending packets to firmware.
> Forward progress under memory pressure is a requirement here.
> 
> In if_spi.c, the workqueue card->workqueue has workitem
> &card->packet_worker, which is mapped to if_spi_host_to_card_worker.
> The workitem is involved in sending command packets from the host.
> Forward progress under memory pressure is a requirement here.
> 
> Dedicated workqueues have been used in both cases since the workitems
> on the workqueues are involved in normal device operation with
> WQ_MEM_RECLAIM set to gurantee forward progress under memory pressure.
> Since there are only a fixed number of work items, explicit concurrency
> limit is unnecessary.
> 
> flush_workqueue is unnecessary since destroy_workqueue() itself calls
> drain_workqueue() which flushes repeatedly till the workqueue
> becomes empty. Hence the calls to flush_workqueue() before
> destroy_workqueue() have been dropped.
> 
> Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@xxxxxxxxx>

Acked-by: Tejun Heo <tj@xxxxxxxxxx>

Thanks.

-- 
tejun