[rppt:pks/v0.0 25/27] mm/page_alloc.c:5529:9: error: implicit declaration of function 'set_memory_4k'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/rppt/linux.git pks/v0.0
head:   eed09ce6622d550ab5b10a86e7dd6c2ff6bd59d9
commit: 21323d5d53b8e2c647a52f87a36a9bd7ca9c3670 [25/27] mm/page_alloc: add MIGRATE_PTE_MAPPED and __GFP_PTE_MAPPED_2
config: hexagon-randconfig-r041-20211104 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 847a6807332b13f43704327c2d30103ec0347c77)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/rppt/linux.git/commit/?id=21323d5d53b8e2c647a52f87a36a9bd7ca9c3670
        git remote add rppt https://git.kernel.org/pub/scm/linux/kernel/git/rppt/linux.git
        git fetch --no-tags rppt pks/v0.0
        git checkout 21323d5d53b8e2c647a52f87a36a9bd7ca9c3670
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=hexagon 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

   mm/page_alloc.c:3931:15: warning: no previous prototype for function 'should_fail_alloc_page' [-Wmissing-prototypes]
   noinline bool should_fail_alloc_page(gfp_t gfp_mask, unsigned int order)
                 ^
   mm/page_alloc.c:3931:10: note: declare 'static' if the function is not intended to be used outside of this translation unit
   noinline bool should_fail_alloc_page(gfp_t gfp_mask, unsigned int order)
            ^
            static 
>> mm/page_alloc.c:5529:9: error: implicit declaration of function 'set_memory_4k' [-Werror,-Wimplicit-function-declaration]
                   err = set_memory_4k(addr, nr_pages);
                         ^
   1 warning and 1 error generated.


vim +/set_memory_4k +5529 mm/page_alloc.c

  5454	
  5455	/*
  5456	 * This is the 'heart' of the zoned buddy allocator.
  5457	 */
  5458	struct page *__alloc_pages(gfp_t gfp, unsigned int order, int preferred_nid,
  5459								nodemask_t *nodemask)
  5460	{
  5461		struct page *page;
  5462		unsigned int alloc_flags = ALLOC_WMARK_LOW;
  5463		gfp_t alloc_gfp; /* The gfp_t that was actually used for allocation */
  5464		struct alloc_context ac = { };
  5465	
  5466		/*
  5467		 * There are several places where we assume that the order value is sane
  5468		 * so bail out early if the request is out of bound.
  5469		 */
  5470		if (unlikely(order >= MAX_ORDER)) {
  5471			WARN_ON_ONCE(!(gfp & __GFP_NOWARN));
  5472			return NULL;
  5473		}
  5474	
  5475		gfp &= gfp_allowed_mask;
  5476		/*
  5477		 * Apply scoped allocation constraints. This is mainly about GFP_NOFS
  5478		 * resp. GFP_NOIO which has to be inherited for all allocation requests
  5479		 * from a particular context which has been marked by
  5480		 * memalloc_no{fs,io}_{save,restore}. And PF_MEMALLOC_PIN which ensures
  5481		 * movable zones are not used during allocation.
  5482		 */
  5483		gfp = current_gfp_context(gfp);
  5484		alloc_gfp = gfp;
  5485		if (!prepare_alloc_pages(gfp, order, preferred_nid, nodemask, &ac,
  5486				&alloc_gfp, &alloc_flags))
  5487			return NULL;
  5488	
  5489		if ((alloc_gfp & __GFP_PTE_MAPPED) && order == 0) {
  5490			page = alloc_page_pte_mapped(alloc_gfp);
  5491			if (page)
  5492				goto out;
  5493		}
  5494	
  5495		/*
  5496		 * Forbid the first pass from falling back to types that fragment
  5497		 * memory until all local zones are considered.
  5498		 */
  5499		alloc_flags |= alloc_flags_nofragment(ac.preferred_zoneref->zone, gfp);
  5500	
  5501		/* First allocation attempt */
  5502		page = get_page_from_freelist(alloc_gfp, order, alloc_flags, &ac);
  5503		if (likely(page))
  5504			goto out;
  5505	
  5506		alloc_gfp = gfp;
  5507		ac.spread_dirty_pages = false;
  5508	
  5509		/*
  5510		 * Restore the original nodemask if it was potentially replaced with
  5511		 * &cpuset_current_mems_allowed to optimize the fast-path attempt.
  5512		 */
  5513		ac.nodemask = nodemask;
  5514	
  5515		page = __alloc_pages_slowpath(alloc_gfp, order, &ac);
  5516	
  5517	out:
  5518		if (memcg_kmem_enabled() && (gfp & __GFP_ACCOUNT) && page &&
  5519		    unlikely(__memcg_kmem_charge_page(page, gfp, order) != 0)) {
  5520			__free_pages(page, order);
  5521			page = NULL;
  5522		}
  5523	
  5524		if (gfp & __GFP_PTE_MAPPED_2) {
  5525			unsigned long addr = (unsigned long)page_address(page);
  5526			unsigned long nr_pages = (1 << order);
  5527			int err;
  5528	
> 5529			err = set_memory_4k(addr, nr_pages);
  5530			if (err) {
  5531				/* FIXME: reset pageblock migratetype */
  5532				/* set_pageblock_migratetype(old_mt) */
  5533				__free_pages(page, order);
  5534				page = NULL;
  5535			}
  5536	
  5537			/* FIXME: should we flush TLB here or later? */
  5538			/* flush_tlb_kernel_range(addr, addr + PAGE_SIZE * nr_pages); */
  5539		}
  5540	
  5541		trace_mm_page_alloc(page, order, alloc_gfp, ac.migratetype);
  5542	
  5543		return page;
  5544	}
  5545	EXPORT_SYMBOL(__alloc_pages);
  5546	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx

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