From 871480933a1c28f8a9fed4c4d34d06c439a7a422 Mon Sep 17 00:00:00 2001 From: Srikant Patnaik Date: Sun, 11 Jan 2015 12:28:04 +0530 Subject: Moved, renamed, and deleted files The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure. --- ANDROID_3.4.5/include/linux/highmem.h | 287 ---------------------------------- 1 file changed, 287 deletions(-) delete mode 100644 ANDROID_3.4.5/include/linux/highmem.h (limited to 'ANDROID_3.4.5/include/linux/highmem.h') diff --git a/ANDROID_3.4.5/include/linux/highmem.h b/ANDROID_3.4.5/include/linux/highmem.h deleted file mode 100644 index d3999b4e..00000000 --- a/ANDROID_3.4.5/include/linux/highmem.h +++ /dev/null @@ -1,287 +0,0 @@ -#ifndef _LINUX_HIGHMEM_H -#define _LINUX_HIGHMEM_H - -#include -#include -#include -#include -#include -#include - -#include - -#ifndef ARCH_HAS_FLUSH_ANON_PAGE -static inline void flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr) -{ -} -#endif - -#ifndef ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE -static inline void flush_kernel_dcache_page(struct page *page) -{ -} -static inline void flush_kernel_vmap_range(void *vaddr, int size) -{ -} -static inline void invalidate_kernel_vmap_range(void *vaddr, int size) -{ -} -#endif - -#include - -#ifdef CONFIG_HIGHMEM -#include - -/* declarations for linux/mm/highmem.c */ -unsigned int nr_free_highpages(void); -extern unsigned long totalhigh_pages; - -void kmap_flush_unused(void); - -#else /* CONFIG_HIGHMEM */ - -static inline unsigned int nr_free_highpages(void) { return 0; } - -#define totalhigh_pages 0UL - -#ifndef ARCH_HAS_KMAP -static inline void *kmap(struct page *page) -{ - might_sleep(); - return page_address(page); -} - -static inline void kunmap(struct page *page) -{ -} - -static inline void *kmap_atomic(struct page *page) -{ - pagefault_disable(); - return page_address(page); -} -#define kmap_atomic_prot(page, prot) kmap_atomic(page) - -static inline void __kunmap_atomic(void *addr) -{ - pagefault_enable(); -} - -#define kmap_atomic_pfn(pfn) kmap_atomic(pfn_to_page(pfn)) -#define kmap_atomic_to_page(ptr) virt_to_page(ptr) - -#define kmap_flush_unused() do {} while(0) -#endif - -#endif /* CONFIG_HIGHMEM */ - -#if defined(CONFIG_HIGHMEM) || defined(CONFIG_X86_32) - -DECLARE_PER_CPU(int, __kmap_atomic_idx); - -static inline int kmap_atomic_idx_push(void) -{ - int idx = __this_cpu_inc_return(__kmap_atomic_idx) - 1; - -#ifdef CONFIG_DEBUG_HIGHMEM - WARN_ON_ONCE(in_irq() && !irqs_disabled()); - BUG_ON(idx > KM_TYPE_NR); -#endif - return idx; -} - -static inline int kmap_atomic_idx(void) -{ - return __this_cpu_read(__kmap_atomic_idx) - 1; -} - -static inline void kmap_atomic_idx_pop(void) -{ -#ifdef CONFIG_DEBUG_HIGHMEM - int idx = __this_cpu_dec_return(__kmap_atomic_idx); - - BUG_ON(idx < 0); -#else - __this_cpu_dec(__kmap_atomic_idx); -#endif -} - -#endif - -/* - * NOTE: - * kmap_atomic() and kunmap_atomic() with two arguments are deprecated. - * We only keep them for backward compatibility, any usage of them - * are now warned. - */ - -#define PASTE(a, b) a ## b -#define PASTE2(a, b) PASTE(a, b) - -#define NARG_(_2, _1, n, ...) n -#define NARG(...) NARG_(__VA_ARGS__, 2, 1, :) - -static inline void __deprecated *kmap_atomic_deprecated(struct page *page, - enum km_type km) -{ - return kmap_atomic(page); -} - -#define kmap_atomic1(...) kmap_atomic(__VA_ARGS__) -#define kmap_atomic2(...) kmap_atomic_deprecated(__VA_ARGS__) -#define kmap_atomic(...) PASTE2(kmap_atomic, NARG(__VA_ARGS__)(__VA_ARGS__)) - -static inline void __deprecated __kunmap_atomic_deprecated(void *addr, - enum km_type km) -{ - __kunmap_atomic(addr); -} - -/* - * Prevent people trying to call kunmap_atomic() as if it were kunmap() - * kunmap_atomic() should get the return value of kmap_atomic, not the page. - */ -#define kunmap_atomic_deprecated(addr, km) \ -do { \ - BUILD_BUG_ON(__same_type((addr), struct page *)); \ - __kunmap_atomic_deprecated(addr, km); \ -} while (0) - -#define kunmap_atomic_withcheck(addr) \ -do { \ - BUILD_BUG_ON(__same_type((addr), struct page *)); \ - __kunmap_atomic(addr); \ -} while (0) - -#define kunmap_atomic1(...) kunmap_atomic_withcheck(__VA_ARGS__) -#define kunmap_atomic2(...) kunmap_atomic_deprecated(__VA_ARGS__) -#define kunmap_atomic(...) PASTE2(kunmap_atomic, NARG(__VA_ARGS__)(__VA_ARGS__)) -/**** End of C pre-processor tricks for deprecated macros ****/ - -/* when CONFIG_HIGHMEM is not set these will be plain clear/copy_page */ -#ifndef clear_user_highpage -static inline void clear_user_highpage(struct page *page, unsigned long vaddr) -{ - void *addr = kmap_atomic(page); - clear_user_page(addr, vaddr, page); - kunmap_atomic(addr); -} -#endif - -#ifndef __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE -/** - * __alloc_zeroed_user_highpage - Allocate a zeroed HIGHMEM page for a VMA with caller-specified movable GFP flags - * @movableflags: The GFP flags related to the pages future ability to move like __GFP_MOVABLE - * @vma: The VMA the page is to be allocated for - * @vaddr: The virtual address the page will be inserted into - * - * This function will allocate a page for a VMA but the caller is expected - * to specify via movableflags whether the page will be movable in the - * future or not - * - * An architecture may override this function by defining - * __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE and providing their own - * implementation. - */ -static inline struct page * -__alloc_zeroed_user_highpage(gfp_t movableflags, - struct vm_area_struct *vma, - unsigned long vaddr) -{ - struct page *page = alloc_page_vma(GFP_HIGHUSER | movableflags, - vma, vaddr); - - if (page) - clear_user_highpage(page, vaddr); - - return page; -} -#endif - -/** - * alloc_zeroed_user_highpage_movable - Allocate a zeroed HIGHMEM page for a VMA that the caller knows can move - * @vma: The VMA the page is to be allocated for - * @vaddr: The virtual address the page will be inserted into - * - * This function will allocate a page for a VMA that the caller knows will - * be able to migrate in the future using move_pages() or reclaimed - */ -static inline struct page * -alloc_zeroed_user_highpage_movable(struct vm_area_struct *vma, - unsigned long vaddr) -{ - return __alloc_zeroed_user_highpage(__GFP_MOVABLE, vma, vaddr); -} - -static inline void clear_highpage(struct page *page) -{ - void *kaddr = kmap_atomic(page); - clear_page(kaddr); - kunmap_atomic(kaddr); -} - -static inline void zero_user_segments(struct page *page, - unsigned start1, unsigned end1, - unsigned start2, unsigned end2) -{ - void *kaddr = kmap_atomic(page); - - BUG_ON(end1 > PAGE_SIZE || end2 > PAGE_SIZE); - - if (end1 > start1) - memset(kaddr + start1, 0, end1 - start1); - - if (end2 > start2) - memset(kaddr + start2, 0, end2 - start2); - - kunmap_atomic(kaddr); - flush_dcache_page(page); -} - -static inline void zero_user_segment(struct page *page, - unsigned start, unsigned end) -{ - zero_user_segments(page, start, end, 0, 0); -} - -static inline void zero_user(struct page *page, - unsigned start, unsigned size) -{ - zero_user_segments(page, start, start + size, 0, 0); -} - -static inline void __deprecated memclear_highpage_flush(struct page *page, - unsigned int offset, unsigned int size) -{ - zero_user(page, offset, size); -} - -#ifndef __HAVE_ARCH_COPY_USER_HIGHPAGE - -static inline void copy_user_highpage(struct page *to, struct page *from, - unsigned long vaddr, struct vm_area_struct *vma) -{ - char *vfrom, *vto; - - vfrom = kmap_atomic(from); - vto = kmap_atomic(to); - copy_user_page(vto, vfrom, vaddr, to); - kunmap_atomic(vto); - kunmap_atomic(vfrom); -} - -#endif - -static inline void copy_highpage(struct page *to, struct page *from) -{ - char *vfrom, *vto; - - vfrom = kmap_atomic(from); - vto = kmap_atomic(to); - copy_page(vto, vfrom); - kunmap_atomic(vto); - kunmap_atomic(vfrom); -} - -#endif /* _LINUX_HIGHMEM_H */ -- cgit