C++ (Cpp) Page_dcache_dirty Examples

Example #1

File: cache.c Project: ndmsystems/linux-2.6.36

void __flush_anon_page(struct page *page, unsigned long vmaddr)
{
#ifdef CONFIG_RALINK_SOC
	if (!PageHighMem(page)) {
		unsigned long addr = (unsigned long) page_address(page);

		if (pages_do_alias(addr, vmaddr & PAGE_MASK)) {
			if (page_mapped(page) && !Page_dcache_dirty(page)) {
				void *kaddr;

				kaddr = kmap_coherent(page, vmaddr);
				flush_data_cache_page((unsigned long)kaddr);
				kunmap_coherent();
			} else {
				flush_data_cache_page(addr);
				ClearPageDcacheDirty(page);
			}
		}
	} else {
		void *laddr = lowmem_page_address(page);

		if (pages_do_alias((unsigned long)laddr, vmaddr & PAGE_MASK)) {
			if (page_mapped(page) && !Page_dcache_dirty(page)) {
				void *kaddr;

				kaddr = kmap_coherent(page, vmaddr);
				flush_data_cache_page((unsigned long)kaddr);
				kunmap_coherent();
			} else {
				void *kaddr;

				kaddr = kmap_atomic(page, KM_PTE1);
				flush_data_cache_page((unsigned long)kaddr);
				kunmap_atomic(kaddr, KM_PTE1);
				ClearPageDcacheDirty(page);
			}
		}
	}
#else
	unsigned long addr = (unsigned long) page_address(page);

	if (pages_do_alias(addr, vmaddr)) {
		if (page_mapped(page) && !Page_dcache_dirty(page)) {
			void *kaddr;

			kaddr = kmap_coherent(page, vmaddr);
			flush_data_cache_page((unsigned long)kaddr);
			kunmap_coherent();
		} else
			flush_data_cache_page(addr);
	}
#endif
}

Example #2

File: cache.c Project: andy-padavan/rt-n56u

void __update_cache(unsigned long address, pte_t pte)
{
	struct page *page;
	unsigned long pfn, addr;
	int exec = !pte_no_exec(pte) && !cpu_has_ic_fills_f_dc;

	pfn = pte_pfn(pte);
	if (unlikely(!pfn_valid(pfn)))
		return;
	page = pfn_to_page(pfn);
	if (Page_dcache_dirty(page)) {
		if (PageHighMem(page))
			addr = (unsigned long)__kmap_atomic(page);
		else
			addr = (unsigned long)page_address(page);

		if (exec || pages_do_alias(addr, address & PAGE_MASK))
			flush_data_cache_page(addr);

		if (PageHighMem(page))
			__kunmap_atomic((void *)addr);

		ClearPageDcacheDirty(page);
	}
}

Example #3

File: cache.c Project: bgtwoigu/kernel-inwatch

void __update_cache(struct vm_area_struct *vma, unsigned long address,
	pte_t pte)
{
	struct page *page;
	unsigned long pfn, addr;
	int exec = (vma->vm_flags & VM_EXEC) && !cpu_has_ic_fills_f_dc;

	pfn = pte_pfn(pte);
	if (unlikely(!pfn_valid(pfn))) {
		wmb();
		return;
	}
	page = pfn_to_page(pfn);
	if (page_mapped(page) && Page_dcache_dirty(page)) {
		void *kaddr = NULL;
		if (PageHighMem(page)) {
			addr = (unsigned long)kmap_atomic(page);
			kaddr = (void *)addr;
		} else
			addr = (unsigned long) page_address(page);
		if (exec || (cpu_has_dc_aliases &&
		    pages_do_alias(addr, address & PAGE_MASK))) {
			flush_data_cache_page(addr);
			ClearPageDcacheDirty(page);
		}

		if (kaddr)
			kunmap_atomic((void *)kaddr);
	}
	wmb();  /* finish any outstanding arch cache flushes before ret to user */
}

Example #4

File: cache.c Project: quentinzil/wl500g

void __flush_anon_page(struct page *page, unsigned long vmaddr)
{
	unsigned long addr = (unsigned long) page_address(page);

	if (pages_do_alias(addr, vmaddr)) {
		if (page_mapped(page) && !Page_dcache_dirty(page)) {
			void *kaddr;

			kaddr = kmap_coherent(page, vmaddr);
			flush_data_cache_page((unsigned long)kaddr);
			kunmap_coherent();
		} else
			flush_data_cache_page(addr);
	}
}

Example #5

File: cache.c Project: 12019/hg556a_source

void __update_cache(struct vm_area_struct *vma, unsigned long address,
	pte_t pte)
{
	struct page *page;
	unsigned long pfn, addr;

	pfn = pte_pfn(pte);
	if (pfn_valid(pfn) && (page = pfn_to_page(pfn), page_mapping(page)) &&
	    Page_dcache_dirty(page)) {
		if (pages_do_alias((unsigned long)page_address(page),
		                   address & PAGE_MASK)) {
			addr = (unsigned long) page_address(page);
			flush_data_cache_page(addr);
		}

		ClearPageDcacheDirty(page);
	}
}

Example #6

File: cache.c Project: quentinzil/wl500g

static void mips_flush_dcache_from_pte(pte_t pteval, unsigned long address)
{
	struct page *page;
	unsigned long pfn = pte_pfn(pteval);

	if (unlikely(!pfn_valid(pfn)))
		return;

	page = pfn_to_page(pfn);
	if (page_mapping(page) && Page_dcache_dirty(page)) {
		unsigned long page_addr = (unsigned long) page_address(page);

		if (!cpu_has_ic_fills_f_dc ||
		    pages_do_alias(page_addr, address & PAGE_MASK))
			flush_data_cache_page(page_addr);
		ClearPageDcacheDirty(page);
	}
}

Example #7

File: cache.c Project: NETFORCE2/OpenWrt-14.07-Barrier-Breaker

void __update_cache(struct vm_area_struct *vma, unsigned long address,
	pte_t pte)
{
	struct page *page;
	unsigned long pfn, addr;
	int exec = (vma->vm_flags & VM_EXEC) && !cpu_has_ic_fills_f_dc;

	pfn = pte_pfn(pte);
	if (unlikely(!pfn_valid(pfn)))
		return;
	page = pfn_to_page(pfn);
	if (page_mapping(page) && Page_dcache_dirty(page)) {
		addr = (unsigned long) page_address(page);
		if (exec || pages_do_alias(addr, address & PAGE_MASK))
			flush_data_cache_page(addr);
		ClearPageDcacheDirty(page);
	}
}