45 lines
1.5 KiB
Diff
45 lines
1.5 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Feng Tang <feng.tang@intel.com>
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Date: Wed, 30 Jan 2019 13:39:58 +0800
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Subject: [PATCH] drm/i915/gvt: optimize the oos memory setup
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current oos memory occupy 33M memory, and its initialization
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takes about 30ms for APL. Since now PVMMIO is used instead of
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oos, reduce its memory size. Also change the kzalloc to kmalloc
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as the oos page will be read first anyway. With this, the setup
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time could be reduced to 3ms.
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Tracked-On: projectacrn/acrn-hypervisor#2451
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Tracked-On: PKT-1737
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Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>
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Signed-off-by: Feng Tang <feng.tang@intel.com>
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---
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drivers/gpu/drm/i915/gvt/gtt.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c
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index 12d8f237a8d3..d8a05a69848b 100644
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--- a/drivers/gpu/drm/i915/gvt/gtt.c
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+++ b/drivers/gpu/drm/i915/gvt/gtt.c
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@@ -45,7 +45,7 @@
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#endif
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static bool enable_out_of_sync = true;
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-static int preallocated_oos_pages = 8192;
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+static int preallocated_oos_pages = 2048;
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/*
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* validate a gm address and related range size,
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@@ -2705,7 +2705,7 @@ static int setup_spt_oos(struct intel_gvt *gvt)
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INIT_LIST_HEAD(>t->oos_page_use_list_head);
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for (i = 0; i < preallocated_oos_pages; i++) {
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- oos_page = kzalloc(sizeof(*oos_page), GFP_KERNEL);
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+ oos_page = kmalloc(sizeof(*oos_page), GFP_KERNEL);
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if (!oos_page) {
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ret = -ENOMEM;
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goto fail;
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--
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https://clearlinux.org
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