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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/include/linux/highmem.h
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/include/linux/highmem.h')
-rw-r--r--ANDROID_3.4.5/include/linux/highmem.h287
1 files changed, 0 insertions, 287 deletions
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 <linux/fs.h>
-#include <linux/kernel.h>
-#include <linux/bug.h>
-#include <linux/mm.h>
-#include <linux/uaccess.h>
-#include <linux/hardirq.h>
-
-#include <asm/cacheflush.h>
-
-#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 <asm/kmap_types.h>
-
-#ifdef CONFIG_HIGHMEM
-#include <asm/highmem.h>
-
-/* 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 */