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[RFC] drm/i915/shrinker: Treat fb's with higher priority than active reference

Message ID 20230630001214.1965121-1-radhakrishna.sripada@intel.com (mailing list archive)
State New, archived
Headers show
Series [RFC] drm/i915/shrinker: Treat fb's with higher priority than active reference | expand

Commit Message

Sripada, Radhakrishna June 30, 2023, 12:12 a.m. UTC
Earlier framebuffers were treated as an active reference in the shrinker
code and were skipped from eviction during kswapd run. However when the
memory pressure is high, the fb object would be evicted. This causes
display flicker while running memory stress tests when fb objects are
created from smem.

To eliminate display artifacts during memory stress tests, when bo's are
created from smem, skip evicting framebuffers all the time.

Cc: Charlton Lin <charlton.lin@intel.com>
Cc: Fei Yang <fei.yang@intel.com>
Cc: Alan Previn <alan.previn.teres.alexis@intel.com>
Cc: Sachin Kumar <sachin.kumar@intel.com>
Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
---
 drivers/gpu/drm/i915/gem/i915_gem_shrinker.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
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Patch

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_shrinker.c b/drivers/gpu/drm/i915/gem/i915_gem_shrinker.c
index 214763942aa2..a2371ac718d9 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_shrinker.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_shrinker.c
@@ -198,8 +198,7 @@  i915_gem_shrink(struct i915_gem_ww_ctx *ww,
 			    !is_vmalloc_addr(obj->mm.mapping))
 				continue;
 
-			if (!(shrink & I915_SHRINK_ACTIVE) &&
-			    i915_gem_object_is_framebuffer(obj))
+			if (i915_gem_object_is_framebuffer(obj))
 				continue;
 
 			if (!can_release_pages(obj))