[Intel-gfx] [PATCH] drm/i915: Try harder to finish the idle-worker

[Tejun Heo]

Hello,

On Tue, Sep 05, 2017 at 02:43:14PM +0100, Chris Wilson wrote:
> > Can't you use cancel[_delayed]_work_sync()?
> 
> We then need a loop like:
> 
> 	do {
> 		if (cancel_delayed_work_sync(wrk))
> 			do_work(wrk);
> 		else
> 			break;
> 	} while (1);
> 
> We do want the flush semantics.

I see.  Heh, I don't know.  One thing you can try to do is putting
them on a separate workqueue and use drain_workqueue() or
destroy_workqueue() on it.  Those functions expect there to be some
requeueing but warns if there are too much (non configurable now but
we can add if necessary).

Thanks.

-- 
tejun