From aae4a3d811753d3f79c43c932b8f7d1bcbf42fb0 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Mon, 13 Feb 2017 17:15:44 +0000 Subject: drm/i915: Use fault-injection to force the shrinker to run in live GTT tests It is possible whilst allocating the page-directory tree for a ppgtt bind that the shrinker may run and reap unused parts of the tree. If the shrinker happens to remove a chunk of the tree that the allocate_va_range has already processed, we may then try to insert into the dangling tree. This test uses the fault-injection framework to force the shrinker to be invoked before we allocate new pages, i.e. new chunks of the PD tree. References: https://bugs.freedesktop.org/show_bug.cgi?id=99295 Signed-off-by: Chris Wilson Reviewed-by: Matthew Auld --- drivers/gpu/drm/i915/i915_selftest.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/gpu/drm/i915/i915_selftest.h') diff --git a/drivers/gpu/drm/i915/i915_selftest.h b/drivers/gpu/drm/i915/i915_selftest.h index e43777b72211..9d7d86f1733d 100644 --- a/drivers/gpu/drm/i915/i915_selftest.h +++ b/drivers/gpu/drm/i915/i915_selftest.h @@ -36,6 +36,8 @@ struct i915_selftest { }; #if IS_ENABLED(CONFIG_DRM_I915_SELFTEST) +#include + extern struct i915_selftest i915_selftest; int i915_mock_selftests(void); -- cgit v1.2.3