diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 115433d46477aebaac679623df4a0a56cf4100ed..56674df31275103ed9278a9b93fc3ef1039d0c74 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -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);