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Commit 8eadc19b authored by Chris Wilson's avatar Chris Wilson
Browse files

drm/i915: Extend debugfs/i915_drop_caches to call i915_gem_shrink_all() 



Sometimes we want to explicitly page out all available objects from igt,
i.e. call i915_gem_shrink_all() and check that subsequent operations
succeed. This adds DROP_SHRINK_ALL [0x8] to the set of flags for
debugfs/i915_drop_caches for that purpose.

Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20170308144622.23194-1-chris@chris-wilson.co.uk


Reviewed-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 504ae402

drivers/gpu/drm/i915/i915_debugfs.c

+6 −1
Original line number Diff line number Diff line
@@ -4231,11 +4231,13 @@ DEFINE_SIMPLE_ATTRIBUTE(i915_ring_test_irq_fops, 
#define DROP_RETIRE 0x4

#define DROP_ACTIVE 0x8

#define DROP_FREED 0x10

#define DROP_SHRINK_ALL 0x20

#define DROP_ALL (DROP_UNBOUND	| \

		  DROP_BOUND	| \

		  DROP_RETIRE	| \

		  DROP_ACTIVE	| \

		  DROP_FREED)

		  DROP_FREED	| \

		  DROP_SHRINK_ALL)

static int

i915_drop_caches_get(void *data, u64 *val)

{
@@ -4276,6 +4278,9 @@ i915_drop_caches_set(void *data, u64 val) 
	if (val & DROP_UNBOUND)

		i915_gem_shrink(dev_priv, LONG_MAX, I915_SHRINK_UNBOUND);



	if (val & DROP_SHRINK_ALL)

		i915_gem_shrink_all(dev_priv);



unlock:

	mutex_unlock(&dev->struct_mutex);