我发现flush_dcache_page()在x86架构上的linux内核中没有执行任何操作,如下所示 包括/asm-generic/cacheflush.h Line17#defineflush_dcache_page(page) do {} while (0) Run Code Online (Sandbox Code Playgroud) 我认为 x86 arch 上有缓存刷新指令“CLFLUSH”,它可以用于此页面刷新。 然而,flush_dcache_p...
void__flush_anon_page(struct page *page,unsignedlongvmaddr) {unsignedlongaddr = (unsignedlong) 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((unsignedlon...
ERROR: "flush_dcache_page" [fs/jffs2/jffs2.ko] undefined! make[3]: *** [__modpost] Error 1 make[2]: *** [modules] Error 2 make[2]: *** Waiting for unfinished jobs... UIMAGE arch/nios2/boot/vmImage Image Name: Linux-2.6.30-00494-g84a224b Created: ...
flush_kernel_dcache_page is a rather confusing interface that implements a subset of flush_dcache_page by not being able to properly handle page cache mapped pages. The only callers left are in the exec code as all other previous callers were incorrect as they could have dealt with page ...
dest = addr;break;caseIND_SOURCE:__flush_dcache_area(addr, PAGE_SIZE); dest += PAGE_SIZE;break;caseIND_DONE:return;default: BUG(); } } } 开发者ID:ferrariDev,项目名称:android_kernel_xiaomi_ferrari,代码行数:33,代码来源:machine_kexec.c ...
Documentation / / Kernel Functions / flush_dcache Language: Objective-C API Changes: NoneFunction flush_dcache macOS 10.0+ void flush_dcache(vm_offset_t, unsigned int, int);Current page is flush_dcache Apple Developer Documentation ...
在驱动程序的设计中,我们可能会用到flush_cache_all将ARM cache的内容刷新到RAM,这是因为ARM Linux中cache一般会被设定为write back的。而通常象DMA是访问不了cache,所以如果我们需要启动DMA将RAM中的内容写到Flash中或LCD framebuffer,那么我们就需要调用flush_cache_all将cache中最新的内容刷新到RAM中。如果不这样...
在驱动程序的设计中,我们可能会用到flush_cache_all将ARM cache的内容刷新到RAM,这是因为ARM Linux中cache一般会被设定为write back的。而通常象DMA是访问不了cache,所以如果我们需要启动DMA将RAM中的内容写到Flash中或LCD framebuffer,那么我们就需要调用flush_cache_all将cache中最新的内容刷新到RAM中。如果不这样...
在驱动程序的设计中,我们可能会用到flush_cache_all将ARM cache的内容刷新到RAM,这是因为ARM Linux中cache一般会被设定为write back的。而通常象DMA是访问不了cache,所以如果我们需要启动DMA将RAM中的内容写到Flash中或LCD framebuffer,那么我们就需要调用flush_cache_all将cache中最新的内容刷新到RAM中。如果不这样...
- flush_dcache_page(scatterwalk_page(walk)); + if (out) { + struct page *page; + + page = walk->sg->page + ((walk->offset - 1) >> PAGE_SHIFT); + flush_dcache_page(page); + } if (more) { walk->offset += PAGE_SIZE - 1; ...