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118 lines
2.3 KiB
118 lines
2.3 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _ASM_GENERIC_CACHEFLUSH_H |
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#define _ASM_GENERIC_CACHEFLUSH_H |
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struct mm_struct; |
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struct vm_area_struct; |
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struct page; |
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struct address_space; |
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/* |
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* The cache doesn't need to be flushed when TLB entries change when |
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* the cache is mapped to physical memory, not virtual memory |
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*/ |
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#ifndef flush_cache_all |
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static inline void flush_cache_all(void) |
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{ |
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} |
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#endif |
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#ifndef flush_cache_mm |
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static inline void flush_cache_mm(struct mm_struct *mm) |
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{ |
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} |
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#endif |
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#ifndef flush_cache_dup_mm |
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static inline void flush_cache_dup_mm(struct mm_struct *mm) |
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{ |
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} |
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#endif |
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#ifndef flush_cache_range |
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static inline void flush_cache_range(struct vm_area_struct *vma, |
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unsigned long start, |
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unsigned long end) |
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{ |
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} |
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#endif |
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#ifndef flush_cache_page |
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static inline void flush_cache_page(struct vm_area_struct *vma, |
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unsigned long vmaddr, |
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unsigned long pfn) |
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{ |
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} |
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#endif |
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#ifndef ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE |
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static inline void flush_dcache_page(struct page *page) |
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{ |
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} |
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#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 |
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#endif |
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#ifndef flush_dcache_mmap_lock |
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static inline void flush_dcache_mmap_lock(struct address_space *mapping) |
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{ |
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} |
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#endif |
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#ifndef flush_dcache_mmap_unlock |
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static inline void flush_dcache_mmap_unlock(struct address_space *mapping) |
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{ |
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} |
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#endif |
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#ifndef flush_icache_range |
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static inline void flush_icache_range(unsigned long start, unsigned long end) |
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{ |
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} |
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#endif |
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#ifndef flush_icache_user_range |
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#define flush_icache_user_range flush_icache_range |
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#endif |
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#ifndef flush_icache_page |
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static inline void flush_icache_page(struct vm_area_struct *vma, |
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struct page *page) |
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{ |
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} |
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#endif |
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#ifndef flush_icache_user_page |
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static inline void flush_icache_user_page(struct vm_area_struct *vma, |
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struct page *page, |
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unsigned long addr, int len) |
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{ |
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} |
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#endif |
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#ifndef flush_cache_vmap |
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static inline void flush_cache_vmap(unsigned long start, unsigned long end) |
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{ |
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} |
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#endif |
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#ifndef flush_cache_vunmap |
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static inline void flush_cache_vunmap(unsigned long start, unsigned long end) |
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{ |
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} |
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#endif |
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#ifndef copy_to_user_page |
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#define copy_to_user_page(vma, page, vaddr, dst, src, len) \ |
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do { \ |
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memcpy(dst, src, len); \ |
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flush_icache_user_page(vma, page, vaddr, len); \ |
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} while (0) |
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#endif |
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#ifndef copy_from_user_page |
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#define copy_from_user_page(vma, page, vaddr, dst, src, len) \ |
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memcpy(dst, src, len) |
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#endif |
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#endif /* _ASM_GENERIC_CACHEFLUSH_H */
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