diff options
Diffstat (limited to 'arch/sparc/mm/highmem.c')
-rw-r--r-- | arch/sparc/mm/highmem.c | 48 |
1 files changed, 28 insertions, 20 deletions
diff --git a/arch/sparc/mm/highmem.c b/arch/sparc/mm/highmem.c index e139e9cbf5f7..4730eac0747b 100644 --- a/arch/sparc/mm/highmem.c +++ b/arch/sparc/mm/highmem.c @@ -29,17 +29,17 @@ #include <asm/tlbflush.h> #include <asm/fixmap.h> -void *kmap_atomic(struct page *page, enum km_type type) +void *__kmap_atomic(struct page *page) { - unsigned long idx; unsigned long vaddr; + long idx, type; /* even !CONFIG_PREEMPT needs this, for in_atomic in do_page_fault */ pagefault_disable(); if (!PageHighMem(page)) return page_address(page); - debug_kmap_atomic(type); + type = kmap_atomic_idx_push(); idx = type + KM_TYPE_NR*smp_processor_id(); vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx); @@ -63,44 +63,52 @@ void *kmap_atomic(struct page *page, enum km_type type) return (void*) vaddr; } -EXPORT_SYMBOL(kmap_atomic); +EXPORT_SYMBOL(__kmap_atomic); -void kunmap_atomic_notypecheck(void *kvaddr, enum km_type type) +void __kunmap_atomic(void *kvaddr) { -#ifdef CONFIG_DEBUG_HIGHMEM unsigned long vaddr = (unsigned long) kvaddr & PAGE_MASK; - unsigned long idx = type + KM_TYPE_NR*smp_processor_id(); + int type; if (vaddr < FIXADDR_START) { // FIXME pagefault_enable(); return; } - BUG_ON(vaddr != __fix_to_virt(FIX_KMAP_BEGIN+idx)); + type = kmap_atomic_idx(); -/* XXX Fix - Anton */ +#ifdef CONFIG_DEBUG_HIGHMEM + { + unsigned long idx; + + idx = type + KM_TYPE_NR * smp_processor_id(); + BUG_ON(vaddr != __fix_to_virt(FIX_KMAP_BEGIN+idx)); + + /* XXX Fix - Anton */ #if 0 - __flush_cache_one(vaddr); + __flush_cache_one(vaddr); #else - flush_cache_all(); + flush_cache_all(); #endif - /* - * force other mappings to Oops if they'll try to access - * this pte without first remap it - */ - pte_clear(&init_mm, vaddr, kmap_pte-idx); -/* XXX Fix - Anton */ + /* + * force other mappings to Oops if they'll try to access + * this pte without first remap it + */ + pte_clear(&init_mm, vaddr, kmap_pte-idx); + /* XXX Fix - Anton */ #if 0 - __flush_tlb_one(vaddr); + __flush_tlb_one(vaddr); #else - flush_tlb_all(); + flush_tlb_all(); #endif + } #endif + kmap_atomic_idx_pop(); pagefault_enable(); } -EXPORT_SYMBOL(kunmap_atomic_notypecheck); +EXPORT_SYMBOL(__kunmap_atomic); /* We may be fed a pagetable here by ptep_to_xxx and others. */ struct page *kmap_atomic_to_page(void *ptr) |