[PATCH] drm/amd/amdgpu: remove vram_page_split kernel option (v2)

[Tom St Denis]

ping?

On Tue, Jun 4, 2019 at 1:15 PM StDenis, Tom <Tom.StDenis at amd.com> wrote:

> This option is no longer needed.  The default code paths
> are now the only option.
>
> v2: Add HPAGE support and a default for non contiguous maps
>
> Signed-off-by: Tom St Denis <tom.stdenis at amd.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu.h          |  1 -
>  drivers/gpu/drm/amd/amdgpu/amdgpu_device.c   |  7 -------
>  drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c      |  8 --------
>  drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c | 14 +++++++++-----
>  4 files changed, 9 insertions(+), 21 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> index 19a00282e34c..e54f31865f60 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> @@ -142,7 +142,6 @@ extern uint amdgpu_sdma_phase_quantum;
>  extern char *amdgpu_disable_cu;
>  extern char *amdgpu_virtual_display;
>  extern uint amdgpu_pp_feature_mask;
> -extern int amdgpu_vram_page_split;
>  extern int amdgpu_ngg;
>  extern int amdgpu_prim_buf_per_se;
>  extern int amdgpu_pos_buf_per_se;
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> index d00fd5dd307a..ef7d99ebe92d 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> @@ -973,13 +973,6 @@ static int amdgpu_device_check_arguments(struct
> amdgpu_device *adev)
>
>         amdgpu_device_check_block_size(adev);
>
> -       if (amdgpu_vram_page_split != -1 && (amdgpu_vram_page_split < 16 ||
> -           !is_power_of_2(amdgpu_vram_page_split))) {
> -               dev_warn(adev->dev, "invalid VRAM page split (%d)\n",
> -                        amdgpu_vram_page_split);
> -               amdgpu_vram_page_split = 1024;
> -       }
> -
>         ret = amdgpu_device_get_job_timeout_settings(adev);
>         if (ret) {
>                 dev_err(adev->dev, "invalid lockup_timeout parameter
> syntax\n");
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> index 1f38d6fc1fe3..ef22a2a25448 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> @@ -108,7 +108,6 @@ int amdgpu_vm_fragment_size = -1;
>  int amdgpu_vm_block_size = -1;
>  int amdgpu_vm_fault_stop = 0;
>  int amdgpu_vm_debug = 0;
> -int amdgpu_vram_page_split = 512;
>  int amdgpu_vm_update_mode = -1;
>  int amdgpu_exp_hw_support = 0;
>  int amdgpu_dc = -1;
> @@ -342,13 +341,6 @@ module_param_named(vm_debug, amdgpu_vm_debug, int,
> 0644);
>  MODULE_PARM_DESC(vm_update_mode, "VM update using CPU (0 = never (default
> except for large BAR(LB)), 1 = Graphics only, 2 = Compute only (default for
> LB), 3 = Both");
>  module_param_named(vm_update_mode, amdgpu_vm_update_mode, int, 0444);
>
> -/**
> - * DOC: vram_page_split (int)
> - * Override the number of pages after we split VRAM allocations (default
> 512, -1 = disable). The default is 512.
> - */
> -MODULE_PARM_DESC(vram_page_split, "Number of pages after we split VRAM
> allocations (default 512, -1 = disable)");
> -module_param_named(vram_page_split, amdgpu_vram_page_split, int, 0444);
> -
>  /**
>   * DOC: exp_hw_support (int)
>   * Enable experimental hw support (1 = enable). The default is 0
> (disabled).
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
> index ec9ea3fdbb4a..0bc01e25a0b4 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
> @@ -284,17 +284,21 @@ static int amdgpu_vram_mgr_new(struct
> ttm_mem_type_manager *man,
>         if (!lpfn)
>                 lpfn = man->size;
>
> -       if (place->flags & TTM_PL_FLAG_CONTIGUOUS ||
> -           amdgpu_vram_page_split == -1) {
> +       if (place->flags & TTM_PL_FLAG_CONTIGUOUS) {
>                 pages_per_node = ~0ul;
>                 num_nodes = 1;
>         } else {
> -               pages_per_node = max((uint32_t)amdgpu_vram_page_split,
> -                                    mem->page_alignment);
> +#ifdef CONFIG_TRANSPARENT_HUGEPAGE
> +               pages_per_node = HPAGE_PMD_NR;
> +#else
> +               /* default to 512MB */
> +               pages_per_node = (512UL << (20UL - PAGE_SHIFT));
> +#endif
> +               pages_per_node = max((uint32_t)pages_per_node,
> mem->page_alignment);
>                 num_nodes = DIV_ROUND_UP(mem->num_pages, pages_per_node);
>         }
>
> -       nodes = kvmalloc_array(num_nodes, sizeof(*nodes),
> +       nodes = kvmalloc_array((uint32_t)num_nodes, sizeof(*nodes),
>                                GFP_KERNEL | __GFP_ZERO);
>         if (!nodes)
>                 return -ENOMEM;
> --
> 2.21.0
>
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> amd-gfx at lists.freedesktop.org
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