xtensa: nommu: don't build most of the cache flushing code (b6cee17b) · Commits · 戴 / test

arch/xtensa/include/asm/cacheflush.h

+3 −2

Original line number	Diff line number	Diff line
		@@ -86,7 +86,8 @@ static inline void __invalidate_icache_page_alias(unsigned long virt,
		* (see also Documentation/cachetlb.txt)
		*/

		#if (DCACHE_WAY_SIZE > PAGE_SIZE) \|\| defined(CONFIG_SMP)
		#if defined(CONFIG_MMU) && \
		((DCACHE_WAY_SIZE > PAGE_SIZE) \|\| defined(CONFIG_SMP))

		#ifdef CONFIG_SMP
		void flush_cache_all(void);
		@@ -152,7 +153,7 @@ void local_flush_cache_page(struct vm_area_struct *vma,
		#define flush_dcache_mmap_lock(mapping) do { } while (0)
		#define flush_dcache_mmap_unlock(mapping) do { } while (0)

		#if (DCACHE_WAY_SIZE > PAGE_SIZE)
		#if defined(CONFIG_MMU) && (DCACHE_WAY_SIZE > PAGE_SIZE)

		extern void copy_to_user_page(struct vm_area_struct, struct page,
		unsigned long, void, const void, unsigned long);

+1 −1

Original line number	Diff line number	Diff line
		@@ -145,7 +145,7 @@ extern void copy_page(void to, void from);
		* some extra work
		*/

		#if DCACHE_WAY_SIZE > PAGE_SIZE
		#if defined(CONFIG_MMU) && DCACHE_WAY_SIZE > PAGE_SIZE
		extern void clear_page_alias(void *vaddr, unsigned long paddr);
		extern void copy_page_alias(void to, void from,
		unsigned long to_paddr, unsigned long from_paddr);

+2 −2

Original line number	Diff line number	Diff line
		@@ -2,6 +2,6 @@
		# Makefile for the Linux/Xtensa-specific parts of the memory manager.
		#

		obj-y := init.o cache.o misc.o
		obj-$(CONFIG_MMU) += fault.o mmu.o tlb.o
		obj-y := init.o misc.o
		obj-$(CONFIG_MMU) += cache.o fault.o mmu.o tlb.o
		obj-$(CONFIG_HIGHMEM) += highmem.o