[PATCH 7.1 432/438] drm/xe: Set TTM device beneficial_order to 9 (2M)

7.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Matthew Brost <[email protected]>

[ Upstream commit ba7fd163422877ad5a5cf31306a38c07d3932b0c ]

Set the TTM device beneficial_order to 9 (2M), which is the sweet
spot for Xe when attempting reclaim on system memory BOs, as it matches
the large GPU page size. This ensures reclaim is attempted at the most
effective order for the driver.

This fixes an issue where an order-10 (4M) allocation cannot be found
despite an abundance of memory. The 4M allocation triggers reclaim,
unnecessarily evicting the working set and hurting performance. Since
the TTM infrastructure was introduced recently, we are tagging the TTM
patch as the Fixes target, even though this resolves an Xe-side problem.

Fixes: 7e9c548d3709 ("drm/ttm: Allow drivers to specify maximum beneficial TTM pool size")
Cc: [email protected]
Signed-off-by: Matthew Brost <[email protected]>
Reviewed-by: Andi Shyti <[email protected]>
Reviewed-by: Thomas Hellström <[email protected]>
Link: https://patch.msgid.link/[email protected]
(cherry picked from commit 0d81db90d364cb3d733410829118759f28957c5a)
Signed-off-by: Matthew Brost <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
 drivers/gpu/drm/xe/xe_device.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/gpu/drm/xe/xe_device.c
+++ b/drivers/gpu/drm/xe/xe_device.c
@@ -478,7 +478,8 @@ int xe_device_init_early(struct xe_devic
 
 	err = ttm_device_init(&xe->ttm, &xe_ttm_funcs, xe->drm.dev,
 			      xe->drm.anon_inode->i_mapping,
-			      xe->drm.vma_offset_manager, 0);
+			      xe->drm.vma_offset_manager,
+			      TTM_ALLOCATION_POOL_BENEFICIAL_ORDER(get_order(SZ_2M)));
 	if (err)
 		return err;