[PATCH] drm/amdkfd: simplify APU VRAM handling
Yu, Lang
Lang.Yu at amd.com
Sat May 25 14:02:06 UTC 2024
[Public]
Reviewed-by: Lang Yu <Lang.Yu at amd.com>
>-----Original Message-----
>From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of Alex
>Deucher
>Sent: Friday, May 24, 2024 10:08 PM
>To: amd-gfx at lists.freedesktop.org
>Cc: Deucher, Alexander <Alexander.Deucher at amd.com>
>Subject: [PATCH] drm/amdkfd: simplify APU VRAM handling
>
>With commit 89773b85599a
>("drm/amdkfd: Let VRAM allocations go to GTT domain on small APUs") big and
>small APU "VRAM" handling in KFD was unified. Since AMD_IS_APU is set for both
>big and small APUs, we can simplify the checks in the code.
>
>v2: clean up a few more places (Lang)
>
>Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
>---
> drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 16 ++++++++--------
> drivers/gpu/drm/amd/amdkfd/kfd_migrate.c | 2 +-
> drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 6 ++----
> drivers/gpu/drm/amd/amdkfd/kfd_svm.h | 1 -
> 4 files changed, 11 insertions(+), 14 deletions(-)
>
>diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
>b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
>index 336eb51c4839..3af00b57cd8a 100644
>--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
>+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
>@@ -196,7 +196,7 @@ int amdgpu_amdkfd_reserve_mem_limit(struct
>amdgpu_device *adev,
> return -EINVAL;
>
> vram_size = KFD_XCP_MEMORY_SIZE(adev, xcp_id);
>- if (adev->gmc.is_app_apu || adev->flags & AMD_IS_APU) {
>+ if (adev->flags & AMD_IS_APU) {
> system_mem_needed = size;
> ttm_mem_needed = size;
> }
>@@ -233,7 +233,7 @@ int amdgpu_amdkfd_reserve_mem_limit(struct
>amdgpu_device *adev,
> if (adev && xcp_id >= 0) {
> adev->kfd.vram_used[xcp_id] += vram_needed;
> adev->kfd.vram_used_aligned[xcp_id] +=
>- (adev->gmc.is_app_apu || adev->flags &
>AMD_IS_APU) ?
>+ (adev->flags & AMD_IS_APU) ?
> vram_needed :
> ALIGN(vram_needed,
>VRAM_AVAILABLITY_ALIGN);
> }
>@@ -261,7 +261,7 @@ void amdgpu_amdkfd_unreserve_mem_limit(struct
>amdgpu_device *adev,
>
> if (adev) {
> adev->kfd.vram_used[xcp_id] -= size;
>- if (adev->gmc.is_app_apu || adev->flags &
>AMD_IS_APU) {
>+ if (adev->flags & AMD_IS_APU) {
> adev->kfd.vram_used_aligned[xcp_id] -= size;
> kfd_mem_limit.system_mem_used -= size;
> kfd_mem_limit.ttm_mem_used -= size; @@ -
>894,7 +894,7 @@ static int kfd_mem_attach(struct amdgpu_device *adev, struct
>kgd_mem *mem,
> * if peer device has large BAR. In contrast, access over xGMI is
> * allowed for both small and large BAR configurations of peer device
> */
>- if ((adev != bo_adev && !(adev->gmc.is_app_apu || adev->flags &
>AMD_IS_APU)) &&
>+ if ((adev != bo_adev && !(adev->flags & AMD_IS_APU)) &&
> ((mem->domain == AMDGPU_GEM_DOMAIN_VRAM) ||
> (mem->alloc_flags & KFD_IOC_ALLOC_MEM_FLAGS_DOORBELL) ||
> (mem->alloc_flags & KFD_IOC_ALLOC_MEM_FLAGS_MMIO_REMAP)))
>{ @@ -1682,7 +1682,7 @@ size_t amdgpu_amdkfd_get_available_memory(struct
>amdgpu_device *adev,
> - atomic64_read(&adev->vram_pin_size)
> - reserved_for_pt;
>
>- if (adev->gmc.is_app_apu || adev->flags & AMD_IS_APU) {
>+ if (adev->flags & AMD_IS_APU) {
> system_mem_available = no_system_mem_limit ?
>
> kfd_mem_limit.max_system_mem_limit :
> kfd_mem_limit.max_system_mem_limit
>- @@ -1730,7 +1730,7 @@ int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
> if (flags & KFD_IOC_ALLOC_MEM_FLAGS_VRAM) {
> domain = alloc_domain = AMDGPU_GEM_DOMAIN_VRAM;
>
>- if (adev->gmc.is_app_apu || adev->flags & AMD_IS_APU) {
>+ if (adev->flags & AMD_IS_APU) {
> domain = AMDGPU_GEM_DOMAIN_GTT;
> alloc_domain = AMDGPU_GEM_DOMAIN_GTT;
> alloc_flags = 0;
>@@ -1981,7 +1981,7 @@ int amdgpu_amdkfd_gpuvm_free_memory_of_gpu(
> if (size) {
> if (!is_imported &&
> (mem->bo->preferred_domains ==
>AMDGPU_GEM_DOMAIN_VRAM ||
>- ((adev->gmc.is_app_apu || adev->flags & AMD_IS_APU) &&
>+ ((adev->flags & AMD_IS_APU) &&
> mem->bo->preferred_domains ==
>AMDGPU_GEM_DOMAIN_GTT)))
> *size = bo_size;
> else
>@@ -2404,7 +2404,7 @@ static int import_obj_create(struct amdgpu_device
>*adev,
> (*mem)->bo = bo;
> (*mem)->va = va;
> (*mem)->domain = (bo->preferred_domains &
>AMDGPU_GEM_DOMAIN_VRAM) &&
>- !(adev->gmc.is_app_apu || adev->flags &
>AMD_IS_APU) ?
>+ !(adev->flags & AMD_IS_APU) ?
> AMDGPU_GEM_DOMAIN_VRAM :
>AMDGPU_GEM_DOMAIN_GTT;
>
> (*mem)->mapped_to_gpu_memory = 0;
>diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
>b/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
>index 4816fcb9803a..8ee3d07ffbdf 100644
>--- a/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
>+++ b/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
>@@ -1023,7 +1023,7 @@ int kgd2kfd_init_zone_device(struct amdgpu_device
>*adev)
> if (amdgpu_ip_version(adev, GC_HWIP, 0) < IP_VERSION(9, 0, 1))
> return -EINVAL;
>
>- if (adev->gmc.is_app_apu || adev->flags & AMD_IS_APU)
>+ if (adev->flags & AMD_IS_APU)
> return 0;
>
> pgmap = &kfddev->pgmap;
>diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
>b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
>index 28c2c1b66226..407636a68814 100644
>--- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
>+++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
>@@ -2634,8 +2634,7 @@ svm_range_best_restore_location(struct svm_range
>*prange,
> return -1;
> }
>
>- if (node->adev->gmc.is_app_apu ||
>- node->adev->flags & AMD_IS_APU)
>+ if (node->adev->flags & AMD_IS_APU)
> return 0;
>
> if (prange->preferred_loc == gpuid ||
>@@ -3353,8 +3352,7 @@ svm_range_best_prefetch_location(struct svm_range
>*prange)
> goto out;
> }
>
>- if (bo_node->adev->gmc.is_app_apu ||
>- bo_node->adev->flags & AMD_IS_APU) {
>+ if (bo_node->adev->flags & AMD_IS_APU) {
> best_loc = 0;
> goto out;
> }
>diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.h
>b/drivers/gpu/drm/amd/amdkfd/kfd_svm.h
>index 9c37bd0567ef..70c1776611c4 100644
>--- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.h
>+++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.h
>@@ -201,7 +201,6 @@ void svm_range_list_lock_and_flush_work(struct
>svm_range_list *svms, struct mm_s
> * is initialized to not 0 when page migration register device memory.
> */
> #define KFD_IS_SVM_API_SUPPORTED(adev) ((adev)->kfd.pgmap.type != 0 ||\
>- (adev)->gmc.is_app_apu ||\
> ((adev)->flags & AMD_IS_APU))
>
> void svm_range_bo_unref_async(struct svm_range_bo *svm_bo);
>--
>2.45.1
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