Messages in this thread | | | Date | Wed, 05 Jan 2005 13:15:08 +1100 | From | Nick Piggin <> | Subject | Re: [PATCH] Exclude PUD/PMD alloc functions if !MMU |
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David Howells wrote: > Don't declare pud_alloc() and pmd_alloc() if a nommu kernel is being > compiled. These functions require various things that aren't defined for > nommu. > > Signed-Off-By: David Howells <dhowells@redhat.com> > --- > warthog>diffstat nommu-exclusions-2610mm1.diff > mm.h | 2 +- > 1 files changed, 1 insertion(+), 1 deletion(-) > > diff -uNrp /warthog/kernels/linux-2.6.10-mm1/include/linux/mm.h linux-2.6.10-mm1-frv/include/linux/mm.h > --- /warthog/kernels/linux-2.6.10-mm1/include/linux/mm.h 2005-01-04 11:15:27.000000000 +0000 > +++ linux-2.6.10-mm1-frv/include/linux/mm.h 2005-01-04 17:39:56.462745022 +0000 > @@ -668,7 +668,7 @@ extern void remove_shrinker(struct shrin > * The following ifdef needed to get the 4level-fixup.h header to work. > * Remove it when 4level-fixup.h has been removed. > */ > -#ifndef __ARCH_HAS_4LEVEL_HACK > +#if defined(CONFIG_MMU) && !defined(__ARCH_HAS_4LEVEL_HACK) > static inline pud_t *pud_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned long address) > { > if (pgd_none(*pgd))
I think you need to do it in the following way:
#ifdef CONFIG_MMU #ifndef __ARCH_HAS_4LEVEL_HACK static inline pud_t *pud_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned long address) { if (pgd_none(*pgd)) ... #else /* __ARCH_HAS_4LEVEL_HACK */ ... #endif /* __ARCH_HAS_4LEVEL_HACK */ #endif /* CONFIG_MMU */
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