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4f0bd80813
The commitc296d4dc13("asm-generic: fix a compilation warning") changed asm-generic/cachflush.h to use static inlines instead of macros and as a result the nds32 build with CONFIG_CPU_CACHE_ALIASING=n fails: CC init/main.o In file included from arch/nds32/include/asm/cacheflush.h:43, from include/linux/highmem.h:12, from include/linux/pagemap.h:11, from include/linux/blkdev.h:16, from include/linux/blk-cgroup.h:23, from include/linux/writeback.h:14, from init/main.c:44: include/asm-generic/cacheflush.h:50:20: error: static declaration of 'flush_icache_range' follows non-static declaration static inline void flush_icache_range(unsigned long start, unsigned long end) ^~~~~~~~~~~~~~~~~~ In file included from include/linux/highmem.h:12, from include/linux/pagemap.h:11, from include/linux/blkdev.h:16, from include/linux/blk-cgroup.h:23, from include/linux/writeback.h:14, from init/main.c:44: arch/nds32/include/asm/cacheflush.h:11:6: note: previous declaration of 'flush_icache_range' was here void flush_icache_range(unsigned long start, unsigned long end); ^~~~~~~~~~~~~~~~~~ Surround the inline functions in asm-generic/cacheflush.h by ifdef's so that architectures could override them and add the required overrides to nds32. Fixes:c296d4dc13("asm-generic: fix a compilation warning") Link: https://lore.kernel.org/lkml/201912212139.yptX8CsV%25lkp@intel.com/ Reported-by: kbuild test robot <lkp@intel.com> Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Reviewed-by: Greentime Hu <green.hu@gmail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
113 lines
2.2 KiB
C
113 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_CACHEFLUSH_H
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#define __ASM_CACHEFLUSH_H
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/* Keep includes the same across arches. */
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#include <linux/mm.h>
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#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
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/*
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* The cache doesn't need to be flushed when TLB entries change when
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* the cache is mapped to physical memory, not virtual memory
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*/
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#ifndef flush_cache_all
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static inline void flush_cache_all(void)
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{
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}
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#endif
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#ifndef flush_cache_mm
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static inline void flush_cache_mm(struct mm_struct *mm)
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{
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}
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#endif
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#ifndef flush_cache_dup_mm
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static inline void flush_cache_dup_mm(struct mm_struct *mm)
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{
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}
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#endif
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#ifndef flush_cache_range
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static inline void flush_cache_range(struct vm_area_struct *vma,
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unsigned long start,
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unsigned long end)
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{
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}
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#endif
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#ifndef flush_cache_page
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static inline void flush_cache_page(struct vm_area_struct *vma,
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unsigned long vmaddr,
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unsigned long pfn)
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{
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}
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#endif
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#ifndef flush_dcache_page
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static inline void flush_dcache_page(struct page *page)
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{
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}
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#endif
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#ifndef flush_dcache_mmap_lock
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static inline void flush_dcache_mmap_lock(struct address_space *mapping)
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{
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}
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#endif
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#ifndef flush_dcache_mmap_unlock
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static inline void flush_dcache_mmap_unlock(struct address_space *mapping)
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{
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}
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#endif
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#ifndef flush_icache_range
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static inline void flush_icache_range(unsigned long start, unsigned long end)
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{
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}
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#endif
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#ifndef flush_icache_page
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static inline void flush_icache_page(struct vm_area_struct *vma,
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struct page *page)
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{
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}
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#endif
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#ifndef flush_icache_user_range
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static inline void flush_icache_user_range(struct vm_area_struct *vma,
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struct page *page,
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unsigned long addr, int len)
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{
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}
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#endif
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#ifndef flush_cache_vmap
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static inline void flush_cache_vmap(unsigned long start, unsigned long end)
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{
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}
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#endif
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#ifndef flush_cache_vunmap
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static inline void flush_cache_vunmap(unsigned long start, unsigned long end)
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{
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}
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#endif
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#ifndef copy_to_user_page
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#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
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do { \
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memcpy(dst, src, len); \
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flush_icache_user_range(vma, page, vaddr, len); \
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} while (0)
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#endif
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#ifndef copy_from_user_page
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#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
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memcpy(dst, src, len)
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#endif
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#endif /* __ASM_CACHEFLUSH_H */
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