Loading arch/mips/mm/highmem.c +19 −0 Original line number Diff line number Diff line Loading @@ -83,6 +83,25 @@ void __kunmap_atomic(void *kvaddr, enum km_type type) preempt_check_resched(); } /* * This is the same as kmap_atomic() but can map memory that doesn't * have a struct page associated with it. */ void *kmap_atomic_pfn(unsigned long pfn, enum km_type type) { enum fixed_addresses idx; unsigned long vaddr; inc_preempt_count(); idx = type + KM_TYPE_NR*smp_processor_id(); vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx); set_pte(kmap_pte-idx, pfn_pte(pfn, kmap_prot)); flush_tlb_one(vaddr); return (void*) vaddr; } struct page *__kmap_atomic_to_page(void *ptr) { unsigned long idx, vaddr = (unsigned long)ptr; Loading include/asm-mips/highmem.h +2 −0 Original line number Diff line number Diff line Loading @@ -75,6 +75,7 @@ static inline void *kmap_atomic(struct page *page, enum km_type type) } static inline void kunmap_atomic(void *kvaddr, enum km_type type) { } #define kmap_atomic_pfn(pfn, idx) page_address(pfn_to_page(pfn)) #define kmap_atomic_to_page(ptr) virt_to_page(ptr) Loading @@ -86,6 +87,7 @@ extern void *__kmap(struct page *page); extern void __kunmap(struct page *page); extern void *__kmap_atomic(struct page *page, enum km_type type); extern void __kunmap_atomic(void *kvaddr, enum km_type type); extern void *kmap_atomic_pfn(unsigned long pfn, enum km_type type); extern struct page *__kmap_atomic_to_page(void *ptr); #define kmap __kmap Loading Loading
arch/mips/mm/highmem.c +19 −0 Original line number Diff line number Diff line Loading @@ -83,6 +83,25 @@ void __kunmap_atomic(void *kvaddr, enum km_type type) preempt_check_resched(); } /* * This is the same as kmap_atomic() but can map memory that doesn't * have a struct page associated with it. */ void *kmap_atomic_pfn(unsigned long pfn, enum km_type type) { enum fixed_addresses idx; unsigned long vaddr; inc_preempt_count(); idx = type + KM_TYPE_NR*smp_processor_id(); vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx); set_pte(kmap_pte-idx, pfn_pte(pfn, kmap_prot)); flush_tlb_one(vaddr); return (void*) vaddr; } struct page *__kmap_atomic_to_page(void *ptr) { unsigned long idx, vaddr = (unsigned long)ptr; Loading
include/asm-mips/highmem.h +2 −0 Original line number Diff line number Diff line Loading @@ -75,6 +75,7 @@ static inline void *kmap_atomic(struct page *page, enum km_type type) } static inline void kunmap_atomic(void *kvaddr, enum km_type type) { } #define kmap_atomic_pfn(pfn, idx) page_address(pfn_to_page(pfn)) #define kmap_atomic_to_page(ptr) virt_to_page(ptr) Loading @@ -86,6 +87,7 @@ extern void *__kmap(struct page *page); extern void __kunmap(struct page *page); extern void *__kmap_atomic(struct page *page, enum km_type type); extern void __kunmap_atomic(void *kvaddr, enum km_type type); extern void *kmap_atomic_pfn(unsigned long pfn, enum km_type type); extern struct page *__kmap_atomic_to_page(void *ptr); #define kmap __kmap Loading