Quoting Mika Kuoppala (2019-05-31 17:18:36)
> We set them to scratch right after allocation so prevent
> useless zeroing before.
>
> Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> Signed-off-by: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/i915/i915_gem_gtt.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
> index ca8a69e8b098..f237ad310426 100644
> --- a/drivers/gpu/drm/i915/i915_gem_gtt.c
> +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
> @@ -681,7 +681,7 @@ static struct i915_page_directory *alloc_pd(struct i915_address_space *vm)
> {
> struct i915_page_directory *pd;
>
> - pd = kzalloc(sizeof(*pd), I915_GFP_ALLOW_FAIL);
> + pd = kmalloc(sizeof(*pd), I915_GFP_ALLOW_FAIL);
> if (unlikely(!pd))
> return ERR_PTR(-ENOMEM);
>
> @@ -738,7 +738,7 @@ alloc_pdp(struct i915_address_space *vm)
>
> GEM_BUG_ON(!i915_vm_is_4lvl(vm));
>
> - pdp = kzalloc(sizeof(*pdp), GFP_KERNEL);
> + pdp = kmalloc(sizeof(*pdp), GFP_KERNEL);
> if (!pdp)
> return ERR_PTR(-ENOMEM);
>
> @@ -750,6 +750,7 @@ alloc_pdp(struct i915_address_space *vm)
> if (ret)
> goto fail_page_m;
>
> + pdp->used_pdpes = 0;
-> __pdp_init.
That makes more sense when you see my patches ;)
With putting initialisation in __pdp_init
Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
-Chris
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