Attachment 111306 Details for Bug 87564 – Change PS thread count for null render context (kernel)

[patch] Change PS thread count for null render context (kernel)

0001-drm-i915-hsw-Adjust-default-context-PS-thread-count.patch (text/plain), 1.02 KB, created by Ben Widawsky on 2014-12-24 23:58:38 UTC

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Creator: Ben Widawsky

Created: 2014-12-24 23:58:38 UTC

Size: 1.02 KB

patch

obsolete

>From af92eefbe762c5a178701d6b46070ada6f8d3a0f Mon Sep 17 00:00:00 2001
>From: Ben Widawsky <benjamin.widawsky@intel.com>
>Date: Wed, 24 Dec 2014 15:51:27 -0800
>Subject: [PATCH] drm/i915/hsw: Adjust default context PS thread count
>
>HSW PS threads must be limited to the max threads in the system. On GT1 this is
>70. Set it to 40 to be safe.
>
>v2: Make it 39
>"This field must have an odd value so that the max number of PS threads is
>even."
>
>Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
>---
> drivers/gpu/drm/i915/intel_renderstate_gen7.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
>diff --git a/drivers/gpu/drm/i915/intel_renderstate_gen7.c b/drivers/gpu/drm/i915/intel_renderstate_gen7.c
>index 6551806..da8ecee 100644
>--- a/drivers/gpu/drm/i915/intel_renderstate_gen7.c
>+++ b/drivers/gpu/drm/i915/intel_renderstate_gen7.c
>@@ -144,7 +144,7 @@ static const u32 gen7_null_state_batch[] = {
> 	0x000002c0,
> 	0x08080000,
> 	0x00000000,
>-	0x28000402,
>+	0x13800402, /* Limit to 39 for HSW GT1 */
> 	0x00060000,
> 	0x00000000,
> 	0x00000000,
>-- 
>2.2.1
>

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