On 02/07/16 11:25, Bhaktipriya Shridhar wrote: > The workqueue "workqueue" has only a single workitem(&ddata->ulps_work) > and hence doesn't require ordering. Also, it is not being used on a > memory reclaim path. Hence, the singlethreaded workqueue has been > replaced with the use of system_wq. > > System workqueues have been able to handle high level of concurrency > for a long time now and hence it's not required to have a singlethreaded > workqueue just to gain concurrency. Unlike a dedicated per-cpu workqueue > created with create_singlethread_workqueue(), system_wq allows multiple > work items to overlap executions even on the same CPU; however, a > per-cpu workqueue doesn't have any CPU locality or global ordering > guarantee unless the target CPU is explicitly specified and thus the > increase of local concurrency shouldn't make any difference. > > dsicm_remove() calls dsicm_cancel_ulps_work which uses > cancel_delayed_work() to ensure that there are no pending tasks while > disconnecting the driver. > > Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@xxxxxxxxx> > --- > drivers/video/fbdev/omap2/omapfb/displays/panel-dsi-cm.c | 14 ++------------ > 1 file changed, 2 insertions(+), 12 deletions(-) Thanks, queued for v4.9. Tomi
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