Something went wrong. Try again.
(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
Something went wrong. Try again.
12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970/* SPDX-License-Identifier: GPL-2.0-only *//* * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) * * vineetg: May 2011: for Non-aliasing VIPT D-cache following can be NOPs * -flush_cache_dup_mm (fork) * -likewise for flush_cache_mm (exit/execve) * -likewise for flush_cache_{range,page} (munmap, exit, COW-break) * * vineetg: April 2008 * -Added a critical CacheLine flush to copy_to_user_page( ) which * was causing gdbserver to not setup breakpoints consistently */
#ifndef _ASM_CACHEFLUSH_H#define _ASM_CACHEFLUSH_H
#include <linux/mm.h>#include <asm/shmparam.h>
void flush_cache_all(void);
void flush_icache_range(unsigned long kstart, unsigned long kend);void __sync_icache_dcache(phys_addr_t paddr, unsigned long vaddr, int len);void __inv_icache_pages(phys_addr_t paddr, unsigned long vaddr, unsigned nr);void __flush_dcache_pages(phys_addr_t paddr, unsigned long vaddr, unsigned nr);
#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
void flush_dcache_page(struct page *page);void flush_dcache_folio(struct folio *folio);#define flush_dcache_folio flush_dcache_folio
void dma_cache_wback_inv(phys_addr_t start, unsigned long sz);void dma_cache_inv(phys_addr_t start, unsigned long sz);void dma_cache_wback(phys_addr_t start, unsigned long sz);
#define flush_dcache_mmap_lock(mapping) do { } while (0)#define flush_dcache_mmap_unlock(mapping) do { } while (0)
/* TBD: optimize this */#define flush_cache_vmap(start, end) flush_cache_all()#define flush_cache_vmap_early(start, end) do { } while (0)#define flush_cache_vunmap(start, end) flush_cache_all()
#define flush_cache_dup_mm(mm) /* called on fork (VIVT only) */
#define flush_cache_mm(mm) /* called on munmap/exit */#define flush_cache_range(mm, u_vstart, u_vend)#define flush_cache_page(vma, u_vaddr, pfn) /* PF handling/COW-break */
/* * A new pagecache page has PG_arch_1 clear - thus dcache dirty by default * This works around some PIO based drivers which don't call flush_dcache_page * to record that they dirtied the dcache */#define PG_dc_clean PG_arch_1
#define copy_to_user_page(vma, page, vaddr, dst, src, len) \do { \ memcpy(dst, src, len); \ if (vma->vm_flags & VM_EXEC) \ __sync_icache_dcache((unsigned long)(dst), vaddr, len); \} while (0)
#define copy_from_user_page(vma, page, vaddr, dst, src, len) \ memcpy(dst, src, len); \
#endif