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Commit 7c95c10e authored by Chris Wilson's avatar Chris Wilson
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drm/i915: Use synchronize_srcu_expedited() for resets 



We impose upon ourselves a strict timeout for resets (to ensure forward
progress by use of a failsafe). Prefer to use the expedited
synchronisation function in this case to reduce the likelihood of a
spurious delay being treated as a deadlock.

Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190211135040.1234-2-chris@chris-wilson.co.uk


Reviewed-by: default avatarMika Kuoppala <mika.kuoppala@intel.com>
parent 785fbda5

drivers/gpu/drm/i915/i915_reset.c

+1 −1
Original line number Diff line number Diff line
@@ -1138,7 +1138,7 @@ static void i915_reset_device(struct drm_i915_private *i915, 
		intel_prepare_reset(i915);



		/* Flush everyone using a resource about to be clobbered */

		synchronize_srcu(&error->reset_backoff_srcu);

		synchronize_srcu_expedited(&error->reset_backoff_srcu);



		mutex_lock(&error->wedge_mutex);

		i915_reset(i915, engine_mask, reason);