[PATCH] drm/xe/ptl: Disable null query for anyhit shader

Nitin Gote nitin.r.gote at intel.com
Wed May 7 12:44:37 UTC 2025


For PTL, disable null query for anyhit shader as it
currently does not bring any performance benefits.
Quite the contrary, disabling the mechanism brings a
small but consistent perf uplift.

Signed-off-by: Nitin Gote <nitin.r.gote at intel.com>
---
 drivers/gpu/drm/xe/xe_tuning.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/xe/xe_tuning.c b/drivers/gpu/drm/xe/xe_tuning.c
index 49ddbda7cdef..6f2f3428b12e 100644
--- a/drivers/gpu/drm/xe/xe_tuning.c
+++ b/drivers/gpu/drm/xe/xe_tuning.c
@@ -98,6 +98,11 @@ static const struct xe_rtp_entry_sr engine_tunings[] = {
 		       ENGINE_CLASS(RENDER)),
 	  XE_RTP_ACTIONS(SET(SAMPLER_MODE, INDIRECT_STATE_BASE_ADDR_OVERRIDE))
 	},
+	{ XE_RTP_NAME("Tuning: Disable NULL query for Anyhit Shader"),
+	  XE_RTP_RULES(GRAPHICS_VERSION_RANGE(3000, 3001),
+		       FUNC(xe_rtp_match_first_render_or_compute)),
+	  XE_RTP_ACTIONS(SET(RT_CTRL, DIS_NULL_QUERY))
+	},
 };
 
 static const struct xe_rtp_entry_sr lrc_tunings[] = {
-- 
2.25.1



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