C++ (Cpp) __flush_cache_oneの例

コード例 #1

ファイル: highmem.c プロジェクト: 12rafael/jellytimekernel

void kunmap_atomic(void *kvaddr, enum km_type type)
{
#ifdef CONFIG_DEBUG_HIGHMEM
	unsigned long vaddr = (unsigned long) kvaddr & PAGE_MASK;
	unsigned long idx = type + KM_TYPE_NR*smp_processor_id();

	if (vaddr < FIXADDR_START) { // FIXME
		pagefault_enable();
		return;
	}

	BUG_ON(vaddr != __fix_to_virt(FIX_KMAP_BEGIN+idx));

/* XXX Fix - Anton */
#if 0
	__flush_cache_one(vaddr);
#else
	flush_cache_all();
#endif

	/*
	 * force other mappings to Oops if they'll try to access
	 * this pte without first remap it
	 */
	pte_clear(&init_mm, vaddr, kmap_pte-idx);
/* XXX Fix - Anton */
#if 0
	__flush_tlb_one(vaddr);
#else
	flush_tlb_all();
#endif
#endif

	pagefault_enable();
}

コード例 #2

ファイル: highmem.c プロジェクト: 150balbes/Amlogic_s905-kernel

void *kmap_atomic(struct page *page)
{
	unsigned long vaddr;
	long idx, type;

	preempt_disable();
	pagefault_disable();
	if (!PageHighMem(page))
		return page_address(page);

	type = kmap_atomic_idx_push();
	idx = type + KM_TYPE_NR*smp_processor_id();
	vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);

/* XXX Fix - Anton */
#if 0
	__flush_cache_one(vaddr);
#else
	flush_cache_all();
#endif

#ifdef CONFIG_DEBUG_HIGHMEM
	BUG_ON(!pte_none(*(kmap_pte-idx)));
#endif
	set_pte(kmap_pte-idx, mk_pte(page, kmap_prot));
/* XXX Fix - Anton */
#if 0
	__flush_tlb_one(vaddr);
#else
	flush_tlb_all();
#endif

	return (void*) vaddr;
}

コード例 #3

ファイル: highmem.c プロジェクト: 12rafael/jellytimekernel

void *kmap_atomic(struct page *page, enum km_type type)
{
	unsigned long idx;
	unsigned long vaddr;

	/* even !CONFIG_PREEMPT needs this, for in_atomic in do_page_fault */
	pagefault_disable();
	if (!PageHighMem(page))
		return page_address(page);

	debug_kmap_atomic(type);
	idx = type + KM_TYPE_NR*smp_processor_id();
	vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);

/* XXX Fix - Anton */
#if 0
	__flush_cache_one(vaddr);
#else
	flush_cache_all();
#endif

#ifdef CONFIG_DEBUG_HIGHMEM
	BUG_ON(!pte_none(*(kmap_pte-idx)));
#endif
	set_pte(kmap_pte-idx, mk_pte(page, kmap_prot));
/* XXX Fix - Anton */
#if 0
	__flush_tlb_one(vaddr);
#else
	flush_tlb_all();
#endif

	return (void*) vaddr;
}

コード例 #4

ファイル: highmem.c プロジェクト: romanbb/android_kernel_lge_d851

void __kunmap_atomic(void *kvaddr)
{
	unsigned long vaddr = (unsigned long) kvaddr & PAGE_MASK;
	int type;

	if (vaddr < FIXADDR_START) { //      
		pagefault_enable();
		return;
	}

	type = kmap_atomic_idx();

#ifdef CONFIG_DEBUG_HIGHMEM
	{
		unsigned long idx;

		idx = type + KM_TYPE_NR * smp_processor_id();
		BUG_ON(vaddr != __fix_to_virt(FIX_KMAP_BEGIN+idx));

		/*                 */
#if 0
		__flush_cache_one(vaddr);
#else
		flush_cache_all();
#endif

		/*
                                                          
                                    
   */
		pte_clear(&init_mm, vaddr, kmap_pte-idx);
		/*                 */
#if 0
		__flush_tlb_one(vaddr);
#else
		flush_tlb_all();
#endif
	}
#endif

	kmap_atomic_idx_pop();
	pagefault_enable();
}