From effce1cb87ee0d8b3a8cbe7722968f4ea7efd360 Mon Sep 17 00:00:00 2001 From: Sophie D Date: Wed, 9 Sep 2026 21:49:10 -0400 Subject: [PATCH] drm/gud: Ignore damage clips in full update mode When running in full update mode, previously small updates (such as moving the mouse across the screen) would cause many full frames to be generated. This would bog down the bus and lower the effective framerate significantly - I was seeing a drop from 60 FPS to 2 FPS. Set ignore_damage_clips in full update mode so the damage iterator yields a single full-plane rectangle instead of one per clip. Fixes: 73cfd166e045 ("drm/gud: Replace simple display pipe with DRM atomic helpers") Cc: # 6.18.x Signed-off-by: Sophie D Reviewed-by: Thomas Zimmermann Acked-by: Ruben Wauters Signed-off-by: Ruben Wauters Link: https://patch.msgid.link/20260910014910.8564-1-patches@scd31.com --- drivers/gpu/drm/gud/gud_pipe.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/gud/gud_pipe.c b/drivers/gpu/drm/gud/gud_pipe.c index 5ef887d8485a..3388fdc8ea7b 100644 --- a/drivers/gpu/drm/gud/gud_pipe.c +++ b/drivers/gpu/drm/gud/gud_pipe.c @@ -482,6 +482,9 @@ int gud_plane_atomic_check(struct drm_plane *plane, if (!new_plane_state->visible) return 0; + if (gdrm->flags & GUD_DISPLAY_FLAG_FULL_UPDATE) + new_plane_state->ignore_damage_clips = true; + if (old_plane_state->rotation != new_plane_state->rotation) crtc_state->mode_changed = true;