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Commit d78cb50b authored by Chris Wilson's avatar Chris Wilson
Browse files

drm/i915: add 'reset' parameter 



When bringing up new hardware, or otherwise experimenting, GPU hangs are
a way of life. However, the automatic GPU reset can do more harm than
good under these circumstances, as we may wish to capture a full trace for
debugging.

Based on a patch by Zhenyu Wang.

Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
parent a0fa62d3

drivers/gpu/drm/i915/i915_drv.c

+6 −0
Original line number Diff line number Diff line
@@ -49,6 +49,9 @@ module_param_named(powersave, i915_powersave, int, 0600); 
unsigned int i915_lvds_downclock = 0;

module_param_named(lvds_downclock, i915_lvds_downclock, int, 0400);



bool i915_try_reset = true;

module_param_named(reset, i915_try_reset, bool, 0600);



static struct drm_driver driver;

extern int intel_agp_enabled;
@@ -475,6 +478,9 @@ int i915_reset(struct drm_device *dev, u8 flags) 
	bool need_display = true;

	int ret;



	if (!i915_try_reset)

		return 0;



	if (!mutex_trylock(&dev->struct_mutex))

		return -EBUSY;