[PATCH 12/20] powerpc/mm: Add hook to flush pgtables when a PTE page is freed

[Stephen Rothwell]

Hi Ben,

On Thu, 23 Jul 2009 15:59:46 +1000 Benjamin Herrenschmidt <benh at kernel.crashing.org> wrote:
>
> +#ifdef CONFIG_PPC_BOOK3E
> +extern void tlb_flush_pgtable(struct mmu_gather *tlb, unsigned long address);
> +#else
> +#define tlb_flush_pgtable(tlb, address)	do { } while(0)

static inline void tlb_flush_pgtable(struct mmu_gather *tlb, unsigned long address) {}

>  #else
> -#define __pte_free_tlb(tlb, pte, address)	pte_free((tlb)->mm, (pte))
> +#define __pte_free_tlb(tlb,pte,address)			\
> +do { 							\
> +	tlb_flush_pgtable(tlb, address);		\
> +	pte_free((tlb)->mm, (pte));  			\
> +} while (0)

This could (should?) be a static inline as well.

-- 
Cheers,
Stephen Rothwell                    sfr at canb.auug.org.au
http://www.canb.auug.org.au/~sfr/
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