diff options
Diffstat (limited to 'arch/arc')
| -rw-r--r-- | arch/arc/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arc/include/asm/highmem.h | 18 | ||||
| -rw-r--r-- | arch/arc/mm/highmem.c | 28 |
3 files changed, 6 insertions, 41 deletions
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig index ff306246d0f8..471ef22216c4 100644 --- a/arch/arc/Kconfig +++ b/arch/arc/Kconfig @@ -6,6 +6,7 @@ config ARC def_bool y select ARC_TIMERS + select ARCH_HAS_DEBUG_VM_PGTABLE select ARCH_HAS_DMA_PREP_COHERENT select ARCH_HAS_PTE_SPECIAL select ARCH_HAS_SETUP_DMA_OPS diff --git a/arch/arc/include/asm/highmem.h b/arch/arc/include/asm/highmem.h index 1af00accb37f..6e5eafb3afdd 100644 --- a/arch/arc/include/asm/highmem.h +++ b/arch/arc/include/asm/highmem.h @@ -25,17 +25,8 @@ #define PKMAP_ADDR(nr) (PKMAP_BASE + ((nr) << PAGE_SHIFT)) #define PKMAP_NR(virt) (((virt) - PKMAP_BASE) >> PAGE_SHIFT) -#define kmap_prot PAGE_KERNEL - - #include <asm/cacheflush.h> -extern void *kmap(struct page *page); -extern void *kmap_high(struct page *page); -extern void *kmap_atomic(struct page *page); -extern void __kunmap_atomic(void *kvaddr); -extern void kunmap_high(struct page *page); - extern void kmap_init(void); static inline void flush_cache_kmaps(void) @@ -43,15 +34,6 @@ static inline void flush_cache_kmaps(void) flush_cache_all(); } -static inline void kunmap(struct page *page) -{ - BUG_ON(in_interrupt()); - if (!PageHighMem(page)) - return; - kunmap_high(page); -} - - #endif #endif diff --git a/arch/arc/mm/highmem.c b/arch/arc/mm/highmem.c index fc8849e4f72e..479b0d72d3cf 100644 --- a/arch/arc/mm/highmem.c +++ b/arch/arc/mm/highmem.c @@ -49,38 +49,23 @@ extern pte_t * pkmap_page_table; static pte_t * fixmap_page_table; -void *kmap(struct page *page) -{ - BUG_ON(in_interrupt()); - if (!PageHighMem(page)) - return page_address(page); - - return kmap_high(page); -} -EXPORT_SYMBOL(kmap); - -void *kmap_atomic(struct page *page) +void *kmap_atomic_high_prot(struct page *page, pgprot_t prot) { int idx, cpu_idx; unsigned long vaddr; - preempt_disable(); - pagefault_disable(); - if (!PageHighMem(page)) - return page_address(page); - cpu_idx = kmap_atomic_idx_push(); idx = cpu_idx + KM_TYPE_NR * smp_processor_id(); vaddr = FIXMAP_ADDR(idx); set_pte_at(&init_mm, vaddr, fixmap_page_table + idx, - mk_pte(page, kmap_prot)); + mk_pte(page, prot)); return (void *)vaddr; } -EXPORT_SYMBOL(kmap_atomic); +EXPORT_SYMBOL(kmap_atomic_high_prot); -void __kunmap_atomic(void *kv) +void kunmap_atomic_high(void *kv) { unsigned long kvaddr = (unsigned long)kv; @@ -102,11 +87,8 @@ void __kunmap_atomic(void *kv) kmap_atomic_idx_pop(); } - - pagefault_enable(); - preempt_enable(); } -EXPORT_SYMBOL(__kunmap_atomic); +EXPORT_SYMBOL(kunmap_atomic_high); static noinline pte_t * __init alloc_kmap_pgtable(unsigned long kvaddr) { |