Файловый менеджер - Редактировать - /usr/src/linux-headers-5.4.0-200/arch/riscv/include/asm/cacheflush.h
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/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2015 Regents of the University of California */ #ifndef _ASM_RISCV_CACHEFLUSH_H #define _ASM_RISCV_CACHEFLUSH_H #include <linux/mm.h> #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 /* * The cache doesn't need to be flushed when TLB entries change when * the cache is mapped to physical memory, not virtual memory */ static inline void flush_cache_all(void) { } static inline void flush_cache_mm(struct mm_struct *mm) { } static inline void flush_cache_dup_mm(struct mm_struct *mm) { } static inline void flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end) { } static inline void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long pfn) { } static inline void flush_dcache_mmap_lock(struct address_space *mapping) { } static inline void flush_dcache_mmap_unlock(struct address_space *mapping) { } static inline void flush_icache_page(struct vm_area_struct *vma, struct page *page) { } static inline void flush_cache_vmap(unsigned long start, unsigned long end) { } static inline void flush_cache_vunmap(unsigned long start, unsigned long end) { } #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ do { \ memcpy(dst, src, len); \ flush_icache_user_range(vma, page, vaddr, len); \ } while (0) #define copy_from_user_page(vma, page, vaddr, dst, src, len) \ memcpy(dst, src, len) static inline void local_flush_icache_all(void) { asm volatile ("fence.i" ::: "memory"); } #define PG_dcache_clean PG_arch_1 static inline void flush_dcache_page(struct page *page) { if (test_bit(PG_dcache_clean, &page->flags)) clear_bit(PG_dcache_clean, &page->flags); } /* * RISC-V doesn't have an instruction to flush parts of the instruction cache, * so instead we just flush the whole thing. */ #define flush_icache_range(start, end) flush_icache_all() #define flush_icache_user_range(vma, pg, addr, len) flush_icache_all() #ifndef CONFIG_SMP #define flush_icache_all() local_flush_icache_all() #define flush_icache_mm(mm, local) flush_icache_all() #else /* CONFIG_SMP */ void flush_icache_all(void); void flush_icache_mm(struct mm_struct *mm, bool local); #endif /* CONFIG_SMP */ /* * Bits in sys_riscv_flush_icache()'s flags argument. */ #define SYS_RISCV_FLUSH_ICACHE_LOCAL 1UL #define SYS_RISCV_FLUSH_ICACHE_ALL (SYS_RISCV_FLUSH_ICACHE_LOCAL) #endif /* _ASM_RISCV_CACHEFLUSH_H */
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