On Thu, 27 Aug 2015 14:33:12 +0530 Vineet Gupta <Vineet.Gupta1@xxxxxxxxxxxx> wrote: > --- a/mm/pgtable-generic.c > +++ b/mm/pgtable-generic.c > @@ -84,6 +84,19 @@ pte_t ptep_clear_flush(struct vm_area_struct *vma, unsigned long address, > > #ifdef CONFIG_TRANSPARENT_HUGEPAGE > > +#ifndef __HAVE_ARCH_FLUSH_PMD_TLB_RANGE > + > +/* > + * ARCHes with special requirements for evicting THP backing TLB entries can > + * implement this. Otherwise also, it can help optimizing thp flush operation. > + * flush_tlb_range() can have optimization to nuke the entire TLB if flush span > + * is greater than a threashhold, which will likely be true for a single > + * huge page. > + * e.g. see arch/arc: flush_pmd_tlb_range > + */ > +#define flush_pmd_tlb_range(vma, addr, end) flush_tlb_range(vma, addr, end) > +#endif Did you consider using a __weak function here? -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
