Messages in this thread Patch in this message | | | Date | Fri, 18 Feb 2005 02:40:16 +1100 | From | Nick Piggin <> | Subject | [PATCH 2/2] trim unused functions |
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And lastly, redo this vital optimisation that David had to remove earlier. Saves a few bytes.
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linux-2.6-npiggin/include/asm-generic/pgtable-nopmd.h | 2 ++ linux-2.6-npiggin/include/asm-generic/pgtable-nopud.h | 2 ++ linux-2.6-npiggin/mm/memory.c | 8 +++++++- 3 files changed, 11 insertions(+), 1 deletion(-)
diff -puN include/asm-generic/pgtable-nopud.h~vm-trim-unused include/asm-generic/pgtable-nopud.h --- linux-2.6/include/asm-generic/pgtable-nopud.h~vm-trim-unused 2005-02-18 02:14:30.000000000 +1100 +++ linux-2.6-npiggin/include/asm-generic/pgtable-nopud.h 2005-02-18 02:15:41.000000000 +1100 @@ -3,6 +3,8 @@ #ifndef __ASSEMBLY__ +#define __PAGETABLE_PUD_FOLDED + /* * Having the pud type consist of a pgd gets the size right, and allows * us to conceptually access the pgd entry that this pud is folded into diff -puN include/asm-generic/pgtable-nopmd.h~vm-trim-unused include/asm-generic/pgtable-nopmd.h --- linux-2.6/include/asm-generic/pgtable-nopmd.h~vm-trim-unused 2005-02-18 02:14:32.000000000 +1100 +++ linux-2.6-npiggin/include/asm-generic/pgtable-nopmd.h 2005-02-18 02:15:31.000000000 +1100 @@ -5,6 +5,8 @@ #include <asm-generic/pgtable-nopud.h> +#define __PAGETABLE_PMD_FOLDED + /* * Having the pmd type consist of a pud gets the size right, and allows * us to conceptually access the pud entry that this pmd is folded into diff -puN mm/memory.c~vm-trim-unused mm/memory.c --- linux-2.6/mm/memory.c~vm-trim-unused 2005-02-18 02:14:44.000000000 +1100 +++ linux-2.6-npiggin/mm/memory.c 2005-02-18 02:17:34.000000000 +1100 @@ -2006,6 +2006,8 @@ int handle_mm_fault(struct mm_struct *mm } #ifndef __ARCH_HAS_4LEVEL_HACK + +#ifndef __PAGETABLE_PUD_FOLDED /* * Allocate page upper directory. * @@ -2037,7 +2039,9 @@ pud_t fastcall *__pud_alloc(struct mm_st out: return pud_offset(pgd, address); } +#endif /* __PAGETABLE_PUD_FOLDED */ +#ifndef __PAGETABLE_PMD_FOLDED /* * Allocate page middle directory. * @@ -2069,7 +2073,9 @@ pmd_t fastcall *__pmd_alloc(struct mm_st out: return pmd_offset(pud, address); } -#else +#endif /* __PAGETABLE_PMD_FOLDED */ + +#else /* __ARCH_HAS_4LEVEL_HACK */ pmd_t fastcall *__pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long address) { pmd_t *new; _
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