Re: [PATCH] Revert "drm/ttm: increase ttm pre-fault value to PMD size"

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Am 23.08.24 um 15:13 schrieb Alex Deucher:
Ping?

On Tue, Aug 20, 2024 at 9:46 AM Alex Deucher <alexander.deucher@xxxxxxx> wrote:
This reverts commit 0ddd2ae586d28e521d37393364d989ce118802e0.

This patch causes sluggishness and stuttering in graphical
apps.

Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3564
Link: https://www.spinics.net/lists/dri-devel/msg457005.html
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: Zhu Lingshan <lingshan.zhu@xxxxxxx>
Cc: Christian König <christian.koenig@xxxxxxx>

Reviewed-by: Christian König <christian.koenig@xxxxxxx>

---
  include/drm/ttm/ttm_bo.h | 4 ----
  1 file changed, 4 deletions(-)

diff --git a/include/drm/ttm/ttm_bo.h b/include/drm/ttm/ttm_bo.h
index ef0f52f56ebc..6ccf96c91f3a 100644
--- a/include/drm/ttm/ttm_bo.h
+++ b/include/drm/ttm/ttm_bo.h
@@ -39,11 +39,7 @@
  #include "ttm_device.h"

  /* Default number of pre-faulted pages in the TTM fault handler */
-#if CONFIG_PGTABLE_LEVELS > 2
-#define TTM_BO_VM_NUM_PREFAULT (1 << (PMD_SHIFT - PAGE_SHIFT))
-#else
  #define TTM_BO_VM_NUM_PREFAULT 16
-#endif

  struct iosys_map;

--
2.46.0





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