Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
[MIPS] Implement flush_anon_page().
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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arch/mips/mm/cache.c
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arch/mips/mm/cache.c
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 1994 - 2003 by Ralf Baechle
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* Copyright (C) 1994 - 2003, 07 by Ralf Baechle (ralf@linux-mips.org)
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* Copyright (C) 2007 MIPS Technologies, Inc.
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*/
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#include <linux/init.h>
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#include <linux/kernel.h>
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}
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EXPORT_SYMBOL(__flush_dcache_page);
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void __flush_anon_page(struct page *page, unsigned long vmaddr)
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{
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if (pages_do_alias((unsigned long)page_address(page), vmaddr)) {
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void *kaddr;
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kaddr = kmap_coherent(page, vmaddr);
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flush_data_cache_page((unsigned long)kaddr);
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kunmap_coherent(kaddr);
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}
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}
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EXPORT_SYMBOL(__flush_anon_page);
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void __update_cache(struct vm_area_struct *vma, unsigned long address,
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pte_t pte)
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arch/mips/mm/init.c
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arch/mips/mm/init.c
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static inline void kmap_coherent_init(void) {}
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#endif
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static inline void *kmap_coherent(struct page *page, unsigned long addr)
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void *kmap_coherent(struct page *page, unsigned long addr)
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{
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enum fixed_addresses idx;
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unsigned long vaddr, flags, entrylo;
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#define UNIQUE_ENTRYHI(idx) (CKSEG0 + ((idx) << (PAGE_SHIFT + 1)))
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static inline void kunmap_coherent(struct page *page)
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void kunmap_coherent(struct page *page)
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{
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#ifndef CONFIG_MIPS_MT_SMTC
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unsigned int wired;
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include/asm-mips/cacheflush.h
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include/asm-mips/cacheflush.h
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#define flush_dcache_mmap_lock(mapping) do { } while (0)
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#define flush_dcache_mmap_unlock(mapping) do { } while (0)
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#define ARCH_HAS_FLUSH_ANON_PAGE
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extern void __flush_anon_page(struct page *, unsigned long);
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static inline void flush_anon_page(struct vm_area_struct *vma,
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struct page *page, unsigned long vmaddr)
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{
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if (cpu_has_dc_aliases && PageAnon(page))
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__flush_anon_page(page, vmaddr);
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}
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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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/* Run kernel code uncached, useful for cache probing functions. */
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unsigned long __init run_uncached(void *func);
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extern void *kmap_coherent(struct page *page, unsigned long addr);
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extern void kunmap_coherent(struct page *page);
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#endif /* _ASM_CACHEFLUSH_H */