コード例 #1
0
ファイル: drm_cache.c プロジェクト: 0x000000FF/edison-linux
void
drm_clflush_pages(struct page *pages[], unsigned long num_pages)
{

#if defined(CONFIG_X86)
	if (cpu_has_clflush) {
		drm_cache_flush_clflush(pages, num_pages);
		return;
	}

	if (wbinvd_on_all_cpus())
		printk(KERN_ERR "Timed out waiting for cache flush.\n");

#elif defined(__powerpc__)
	unsigned long i;
	for (i = 0; i < num_pages; i++) {
		struct page *page = pages[i];
		void *page_virtual;

		if (unlikely(page == NULL))
			continue;

		page_virtual = kmap_atomic(page);
		flush_dcache_range((unsigned long)page_virtual,
				   (unsigned long)page_virtual + PAGE_SIZE);
		kunmap_atomic(page_virtual);
	}
#else
	printk(KERN_ERR "Architecture has no drm_cache.c support\n");
	WARN_ON_ONCE(1);
#endif
}
コード例 #2
0
ファイル: kfm_cache.c プロジェクト: kadoma/fms
/* flush all cpus cache */
void 
kfm_cache_flush_all(void)
{
	EnterFunction(6);
	
	wbinvd_on_all_cpus();

	LeaveFunction(6);
}
コード例 #3
0
static void *ion_page_pool_alloc_pages(struct ion_page_pool *pool)
{
	struct page *page = alloc_pages(pool->gfp_mask, pool->order);

	if (!page)
		return NULL;
#ifdef CONFIG_ARM
	/* this is only being used to flush the page for dma,
	   this api is not really suitable for calling from a driver
	   but no better way to flush a page for dma exist at this time */
	__dma_page_cpu_to_dev(page, 0, PAGE_SIZE << pool->order,
			      DMA_BIDIRECTIONAL);
#elif defined(CONFIG_X86)
	wbinvd_on_all_cpus();
#endif
	return page;
}
コード例 #4
0
ファイル: drm_cache.c プロジェクト: 0x000000FF/edison-linux
void
drm_clflush_virt_range(void *addr, unsigned long length)
{
#if defined(CONFIG_X86)
	if (cpu_has_clflush) {
		void *end = addr + length;
		mb();
		for (; addr < end; addr += boot_cpu_data.x86_clflush_size)
			clflushopt(addr);
		clflushopt(end - 1);
		mb();
		return;
	}

	if (wbinvd_on_all_cpus())
		printk(KERN_ERR "Timed out waiting for cache flush.\n");
#else
	printk(KERN_ERR "Architecture has no drm_cache.c support\n");
	WARN_ON_ONCE(1);
#endif
}
コード例 #5
0
ファイル: drm_cache.c プロジェクト: 0x000000FF/edison-linux
void
drm_clflush_sg(struct sg_table *st)
{
#if defined(CONFIG_X86)
	if (cpu_has_clflush) {
		struct sg_page_iter sg_iter;

		mb();
		for_each_sg_page(st->sgl, &sg_iter, st->nents, 0)
			drm_clflush_page(sg_page_iter_page(&sg_iter));
		mb();

		return;
	}

	if (wbinvd_on_all_cpus())
		printk(KERN_ERR "Timed out waiting for cache flush.\n");
#else
	printk(KERN_ERR "Architecture has no drm_cache.c support\n");
	WARN_ON_ONCE(1);
#endif
}