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| author | Paul Mundt <lethal@linux-sh.org> | 2009-09-03 17:21:10 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-09-03 17:21:10 +0900 |
| commit | 0906a3ad33a254094fb74828e3ddb9af8771a6da (patch) | |
| tree | 33acc1be2e213ae2f13439d3d5f8e9dd8a4f2d46 /arch/sh/include | |
| parent | d1af119a69fc9a625bd57a66d9c9fa88795b082c (diff) | |
| download | linux-0906a3ad33a254094fb74828e3ddb9af8771a6da.tar.gz linux-0906a3ad33a254094fb74828e3ddb9af8771a6da.tar.bz2 linux-0906a3ad33a254094fb74828e3ddb9af8771a6da.zip | |
sh: Fix up and optimize the kmap_coherent() interface.
This fixes up the kmap_coherent/kunmap_coherent() interface for recent
changes both in the page fault path and the shared cache flushers, as
well as adding in some optimizations.
One of the key things to note here is that the TLB flush itself is
deferred until the unmap, and the call in to update_mmu_cache() itself
goes away, relying on the regular page fault path to handle the lazy
dcache writeback if necessary.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/include')
| -rw-r--r-- | arch/sh/include/asm/cacheflush.h | 2 | ||||
| -rw-r--r-- | arch/sh/include/asm/pgtable_32.h | 8 | ||||
| -rw-r--r-- | arch/sh/include/asm/pgtable_64.h | 5 |
3 files changed, 13 insertions, 2 deletions
diff --git a/arch/sh/include/asm/cacheflush.h b/arch/sh/include/asm/cacheflush.h index 11e416630585..c29918f3c819 100644 --- a/arch/sh/include/asm/cacheflush.h +++ b/arch/sh/include/asm/cacheflush.h @@ -85,7 +85,7 @@ extern void copy_from_user_page(struct vm_area_struct *vma, void kmap_coherent_init(void); void *kmap_coherent(struct page *page, unsigned long addr); -void kunmap_coherent(void); +void kunmap_coherent(void *kvaddr); #define PG_dcache_dirty PG_arch_1 diff --git a/arch/sh/include/asm/pgtable_32.h b/arch/sh/include/asm/pgtable_32.h index 4c4429cda56d..c0d359ce337b 100644 --- a/arch/sh/include/asm/pgtable_32.h +++ b/arch/sh/include/asm/pgtable_32.h @@ -408,13 +408,19 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) /* to find an entry in a page-table-directory. */ #define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1)) -#define pgd_offset(mm, address) ((mm)->pgd+pgd_index(address)) +#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address)) +#define __pgd_offset(address) pgd_index(address) /* to find an entry in a kernel page-table-directory */ #define pgd_offset_k(address) pgd_offset(&init_mm, address) +#define __pud_offset(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1)) +#define __pmd_offset(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1)) + /* Find an entry in the third-level page table.. */ #define pte_index(address) ((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)) +#define __pte_offset(address) pte_index(address) + #define pte_offset_kernel(dir, address) \ ((pte_t *) pmd_page_vaddr(*(dir)) + pte_index(address)) #define pte_offset_map(dir, address) pte_offset_kernel(dir, address) diff --git a/arch/sh/include/asm/pgtable_64.h b/arch/sh/include/asm/pgtable_64.h index c78990cda557..17cdbecc3adc 100644 --- a/arch/sh/include/asm/pgtable_64.h +++ b/arch/sh/include/asm/pgtable_64.h @@ -60,6 +60,9 @@ static __inline__ void pmd_set(pmd_t *pmdp,pte_t *ptep) /* To find an entry in a kernel PGD. */ #define pgd_offset_k(address) pgd_offset(&init_mm, address) +#define __pud_offset(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1)) +#define __pmd_offset(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1)) + /* * PMD level access routines. Same notes as above. */ @@ -80,6 +83,8 @@ static __inline__ void pmd_set(pmd_t *pmdp,pte_t *ptep) #define pte_index(address) \ ((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)) +#define __pte_offset(address) pte_index(address) + #define pte_offset_kernel(dir, addr) \ ((pte_t *) ((pmd_val(*(dir))) & PAGE_MASK) + pte_index((addr))) |