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drm/amdgpu: allow GTT overcommit during bind

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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>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König 2017-10-16 11:18:54 +02:00 committed by Alex Deucher
parent 4b6b691ee3
commit d2d7cc330d
1 changed files with 5 additions and 3 deletions
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8
drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
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@ -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;
}
/**
@ -265,7 +267,7 @@ static void amdgpu_gtt_mgr_debug(struct ttm_mem_type_manager *man,
drm_mm_print(&mgr->mm, printer);
spin_unlock(&mgr->lock);
drm_printf(printer, "man size:%llu pages, gtt available:%llu pages, usage:%lluMB\n",
drm_printf(printer, "man size:%llu pages, gtt available:%lld pages, usage:%lluMB\n",
man->size, (u64)atomic64_read(&mgr->available),
amdgpu_gtt_mgr_usage(man) >> 20);
}