kernel-drm: reduce hash order for ttm object and ttm reference object

BZ: 31145

TTM is mainly used by video driver, we don't allocate too much ttm buffer object, so reduce hash order, which can save memory,
also avoid too fragmented vmalloc memory.

Change-Id: I102cb26000b5e95a923b2b66920dca83b1274ffc
Reviewed-on: http://android.intel.com:8080/47159
Reviewed-by: Jiang, Fei <fei.jiang@intel.com>
Reviewed-by: Zhang, Yanmin <yanmin.zhang@intel.com>
Reviewed-by: Tu, Yun <yun.tu@intel.com>
Reviewed-by: Zeng, Li <li.zeng@intel.com>
Reviewed-by: Ding, Haitao <haitao.ding@intel.com>
Tested-by: Ding, Haitao <haitao.ding@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>

diff --git a/drivers/staging/mrst/drv/psb_drv.h b/drivers/staging/mrst/drv/psb_drv.h
index fbe1641..671922d 100644 (file)
--- a/drivers/staging/mrst/drv/psb_drv.h
+++ b/drivers/staging/mrst/drv/psb_drv.h
@@ -127,9 +127,9 @@ enum panel_type {
 
 #define DRM_PSB_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
 
-#define PSB_OBJECT_HASH_ORDER 13
-#define PSB_FILE_OBJECT_HASH_ORDER 12
-#define PSB_BO_HASH_ORDER 12
+#define PSB_OBJECT_HASH_ORDER 9
+#define PSB_FILE_OBJECT_HASH_ORDER 8
+#define PSB_BO_HASH_ORDER 8
 
 #define PSB_VDC_OFFSET          0x00000000
 #define PSB_VDC_SIZE            0x000080000