On 2019-03-28 4:38 p.m., Liu, Shaoyun wrote:
> Avoid unnecessary XGMI hight pstate trigger when mapping none-vram memory for
> peer device
>
> Change-Id: I1881deff3da19f1f4b58d5765db03a590092a5b2
> Signed-off-by: shaoyunl <shaoyun....@amd.com>
This patch is Reviewed-by: Felix Kuehling <felix.kuehl...@amd.com>
Please also give Christian a chance to review this one before you submit.
Thanks,
Felix
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 11 +++++++++++
> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 3 ++-
> 2 files changed, 13 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
> index 9ee8d7a..7b84036 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
> @@ -31,6 +31,7 @@
> #include <drm/amdgpu_drm.h>
> #include "amdgpu.h"
> #include "amdgpu_display.h"
> +#include "amdgpu_xgmi.h"
>
> void amdgpu_gem_object_free(struct drm_gem_object *gobj)
> {
> @@ -666,6 +667,7 @@ int amdgpu_gem_op_ioctl(struct drm_device *dev, void
> *data,
> struct amdgpu_device *adev = dev->dev_private;
> struct drm_amdgpu_gem_op *args = data;
> struct drm_gem_object *gobj;
> + struct amdgpu_vm_bo_base *base;
> struct amdgpu_bo *robj;
> int r;
>
> @@ -704,6 +706,15 @@ int amdgpu_gem_op_ioctl(struct drm_device *dev, void
> *data,
> amdgpu_bo_unreserve(robj);
> break;
> }
> + for (base = robj->vm_bo; base; base = base->next)
> + if
> (amdgpu_xgmi_same_hive(amdgpu_ttm_adev(robj->tbo.bdev),
> +
> amdgpu_ttm_adev(base->vm->root.base.bo->tbo.bdev))) {
> + r = -EINVAL;
> + amdgpu_bo_unreserve(robj);
> + goto out;
> + }
> +
> +
> robj->preferred_domains = args->value & (AMDGPU_GEM_DOMAIN_VRAM
> |
> AMDGPU_GEM_DOMAIN_GTT |
> AMDGPU_GEM_DOMAIN_CPU);
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
> index 3d221f0..eb242a1 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
> @@ -2025,7 +2025,8 @@ struct amdgpu_bo_va *amdgpu_vm_bo_add(struct
> amdgpu_device *adev,
> INIT_LIST_HEAD(&bo_va->valids);
> INIT_LIST_HEAD(&bo_va->invalids);
>
> - if (bo && amdgpu_xgmi_same_hive(adev, amdgpu_ttm_adev(bo->tbo.bdev))) {
> + if (bo && amdgpu_xgmi_same_hive(adev, amdgpu_ttm_adev(bo->tbo.bdev)) &&
> + (bo->preferred_domains & AMDGPU_GEM_DOMAIN_VRAM)) {
> bo_va->is_xgmi = true;
> mutex_lock(&adev->vm_manager.lock_pstate);
> /* Power up XGMI if it can be potentially used */
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