Re: [RFC PATCH v2 09/11] ARM64: mm: HugeTLB support.

[Catalin Marinas <catalin.marinas@arm.com>]

On Wed, May 08, 2013 at 10:52:41AM +0100, Steve Capper wrote:
> --- /dev/null
> +++ b/arch/arm64/include/asm/hugetlb.h
...
> +static inline int pud_large(pud_t pud)
> +{
> +	return !(pud_val(pud) & PUD_TABLE_BIT);
> +}

I already commented on this - do we really need pud_large() which is
the same as pud_huge()? It's only defined on x86 and can be safely
replaced with pud_huge().

> --- /dev/null
> +++ b/arch/arm64/mm/hugetlbpage.c
> @@ -0,0 +1,70 @@
...
> +int pmd_huge(pmd_t pmd)
> +{
> +	return !(pmd_val(pmd) & PMD_TABLE_BIT);
> +}
> +
> +int pud_huge(pud_t pud)
> +{
> +	return !(pud_val(pud) & PUD_TABLE_BIT);
> +}

You could even go further and make pud/pmd_huge static inline functions
for slightly better efficiency (needs changing in the linux/hugetlb.h
header).

-- 
Catalin

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