From: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Date: Fri, 7 Jun 2019 15:58:16 +0000 (-0700)
Subject: panfrost: Always align strides to cache line (64)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=a38583e352e4718aaf6f8947bf385407128b137e;p=mesa.git

panfrost: Always align strides to cache line (64)

(Performance tweak.)

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
---

diff --git a/src/gallium/drivers/panfrost/pan_resource.c b/src/gallium/drivers/panfrost/pan_resource.c
index 23a05ee43cc..9e8f305c849 100644
--- a/src/gallium/drivers/panfrost/pan_resource.c
+++ b/src/gallium/drivers/panfrost/pan_resource.c
@@ -210,7 +210,13 @@ panfrost_setup_slices(const struct pipe_resource *tmpl, struct panfrost_bo *bo)
                 }
 
                 slice->offset = offset;
-                slice->stride = bytes_per_pixel * effective_width;
+
+                /* Compute the would-be stride */
+                unsigned stride = bytes_per_pixel * effective_width;
+
+                /* ..but cache-line align it for performance */
+                stride = ALIGN(stride, 64);
+                slice->stride = stride;
 
                 offset += slice->stride * effective_height;