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From 9372c55ab3cf63f8d7ad2c4400137ec5d794010a Mon Sep 17 00:00:00 2001
From: Christian Koenig <christian.koenig@amd.com>
Date: Mon, 16 Oct 2017 11:18:54 +0200
Subject: [PATCH 2032/4131] drm/amdgpu: allow GTT overcommit during bind
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
While binding BOs to GART we need to allow a bit overcommit in the GTT
domain. Otherwise we can never use the full GART space when GART size=GTT size.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Conflicts:
drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
Change-Id: Ifd3fc42beefa2f930e9cbf6734e7f5b75259a600
---
drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
index 0d15eb7..287f97a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
@@ -169,7 +169,8 @@ static int amdgpu_gtt_mgr_new(struct ttm_mem_type_manager *man,
int r;
spin_lock(&mgr->lock);
- if (atomic64_read(&mgr->available) < mem->num_pages) {
+ if ((&tbo->mem == mem || tbo->mem.mem_type != TTM_PL_TT) &&
+ atomic64_read(&mgr->available) < mem->num_pages) {
spin_unlock(&mgr->lock);
return 0;
}
@@ -244,8 +245,9 @@ static void amdgpu_gtt_mgr_del(struct ttm_mem_type_manager *man,
uint64_t amdgpu_gtt_mgr_usage(struct ttm_mem_type_manager *man)
{
struct amdgpu_gtt_mgr *mgr = man->priv;
+ s64 result = man->size - atomic64_read(&mgr->available);
- return (u64)(man->size - atomic64_read(&mgr->available)) * PAGE_SIZE;
+ return (result > 0 ? result : 0) * PAGE_SIZE;
}
/**
--
2.7.4
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