[Intel-gfx] [PATCH] drm/i915: Remove nested work in gpu error handling

[Chris Wilson]

On Wed, Jan 28, 2015 at 05:03:14PM +0200, Mika Kuoppala wrote:
> Now when we declare gpu errors only through our own dedicated
> hangcheck workqueue there is no need to have a separate workqueue
> for handling the resetting and waking up the clients as the deadlock
> concerns are no more.
> 
> The only exception is i915_debugfs::i915_set_wedged, which triggers
> error handling through process context. However as this is only used through
> test harness it is responsibility for test harness not to introduce hangs
> through both debug interface and through hangcheck mechanism at the same time.
> 
> Remove gpu_error.work and let the hangcheck work do the tasks it used to.
> 
> v2: Add a big warning sign into i915_debugfs::i915_set_wedged (Chris)
> 
> Cc: Chris Wilson <chris at chris-wilson.co.uk>
> Signed-off-by: Mika Kuoppala <mika.kuoppala at intel.com>
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre