/* SPDX-License-Identifier: GPL-2.0 */#ifndef _ASM_GENERIC_CACHEFLUSH_H#define _ASM_GENERIC_CACHEFLUSH_H #include <linux/instrumented.h> struct mm_struct;struct vm_area_struct;struct page;struct address_space; /* * The cache doesn't need to be flushed when TLB entries change when * the cache is mapped to physical memory, not virtual memory */#ifndef flush_cache_allstatic inline void flush_cache_all(void){}#endif #ifndef flush_cache_mmstatic inline void flush_cache_mm(struct mm_struct *mm){}#endif #ifndef flush_cache_dup_mmstatic inline void flush_cache_dup_mm(struct mm_struct *mm){}#endif #ifndef flush_cache_rangestatic inline void flush_cache_range(struct vm_area_struct *vma,				     unsigned long start,				     unsigned long end){}#endif #ifndef flush_cache_pagestatic inline void flush_cache_page(struct vm_area_struct *vma,				    unsigned long vmaddr,				    unsigned long pfn){}#endif #ifndef ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGEstatic inline void flush_dcache_page(struct page *page){} #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0#endif #ifndef flush_dcache_mmap_lockstatic inline void flush_dcache_mmap_lock(struct address_space *mapping){}#endif #ifndef flush_dcache_mmap_unlockstatic inline void flush_dcache_mmap_unlock(struct address_space *mapping){}#endif #ifndef flush_icache_rangestatic inline void flush_icache_range(unsigned long start, unsigned long end){}#endif #ifndef flush_icache_user_range#define flush_icache_user_range flush_icache_range#endif #ifndef flush_icache_user_pagestatic inline void flush_icache_user_page(struct vm_area_struct *vma,					   struct page *page,					   unsigned long addr, int len){}#endif #ifndef flush_cache_vmapstatic inline void flush_cache_vmap(unsigned long start, unsigned long end){}#endif #ifndef flush_cache_vunmapstatic inline void flush_cache_vunmap(unsigned long start, unsigned long end){}#endif #ifndef copy_to_user_page#define copy_to_user_page(vma, page, vaddr, dst, src, len)	\	do { \		instrument_copy_to_user((void __user *)dst, src, len); \		memcpy(dst, src, len); \		flush_icache_user_page(vma, page, vaddr, len); \	} while (0)#endif  #ifndef copy_from_user_page#define copy_from_user_page(vma, page, vaddr, dst, src, len)		  \	do {								  \		instrument_copy_from_user_before(dst, (void __user *)src, \						 len);			  \		memcpy(dst, src, len);					  \		instrument_copy_from_user_after(dst, (void __user *)src, len, \						0);			  \	} while (0)#endif #endif /* _ASM_GENERIC_CACHEFLUSH_H */