From: Franck Bui-Huu <fbuihuu@xxxxxxxxx> These 2 macros did unnecessary extra work for getting a pte from a pmd. With this patch the size of the kernel is slighly reduced (-1036b) Signed-off-by: Franck Bui-Huu <fbuihuu@xxxxxxxxx> --- Ralf, This patch does not include any modifications for 64-bits kernel since I can't test them. This patch boot fine on a 32-bits platforms. Please consider Franck include/asm-mips/pgtable-32.h | 7 +++---- 1 files changed, 3 insertions(+), 4 deletions(-) diff --git a/include/asm-mips/pgtable-32.h b/include/asm-mips/pgtable-32.h index 2fbd47e..a0e76e4 100644 --- a/include/asm-mips/pgtable-32.h +++ b/include/asm-mips/pgtable-32.h @@ -143,6 +143,7 @@ pfn_pte(unsigned long pfn, pgprot_t prot) #define __pgd_offset(address) pgd_index(address) #define __pud_offset(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1)) #define __pmd_offset(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1)) +#define __pte_offset(address) (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE-1)) /* to find an entry in a kernel page-table-directory */ #define pgd_offset_k(address) pgd_offset(&init_mm, address) @@ -153,17 +154,15 @@ pfn_pte(unsigned long pfn, pgprot_t prot) #define pgd_offset(mm,addr) ((mm)->pgd + pgd_index(addr)) /* Find an entry in the third-level page table.. */ -#define __pte_offset(address) \ - (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)) #define pte_offset(dir, address) \ ((pte_t *) pmd_page_vaddr(*(dir)) + __pte_offset(address)) #define pte_offset_kernel(dir, address) \ ((pte_t *) pmd_page_vaddr(*(dir)) + __pte_offset(address)) #define pte_offset_map(dir, address) \ - ((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address)) + ((pte_t *) pmd_page_vaddr(*(dir)) + __pte_offset(address)) #define pte_offset_map_nested(dir, address) \ - ((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address)) + ((pte_t *) pmd_page_vaddr(*(dir)) + __pte_offset(address)) #define pte_unmap(pte) ((void)(pte)) #define pte_unmap_nested(pte) ((void)(pte)) -- 1.5.1.rc1.g1d848
