From: Eric Anholt <e...@anholt.net>
Reviewed-by: Chad Versace <chad.vers...@linux.intel.com>
---
src/mesa/drivers/dri/intel/intel_context.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/src/mesa/drivers/dri/intel/intel_context.c
b/src/mesa/drivers/dri/intel/intel_context.c
index 2494ac7..378859c 100644
--- a/src/mesa/drivers/dri/intel/intel_context.c
+++ b/src/mesa/drivers/dri/intel/intel_context.c
@@ -893,6 +893,10 @@ intel_process_dri2_buffer(struct intel_context *intel,
if (!rb)
return;
+ /* We try to avoid closing and reopening the same BO name, because the first
+ * use of a mapping of the buffer involves a bunch of page faulting which is
+ * moderately expensive.
+ */
if (rb->mt &&
rb->mt->region &&
rb->mt->region->name == buffer->name)
--
1.7.11.2
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