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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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2.7 kB · 127 lines
C
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128/* 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_vmap_earlystatic inline void flush_cache_vmap_early(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 */