[willy-pagecache:headers 16/21] drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_migrate.c:236:2: error: call to undeclared function 'unlock_page'; ISO C99 and later do not support implicit function declarations

[kernel test robot <lkp@intel.com>]

tree:   git://git.infradead.org/users/willy/pagecache headers
head:   2c16f123eb253c5d93edfe0e5439120f8f7e3afa
commit: 8f4b7541e27a9da8c5d1d0908af1e739b6e05e05 [16/21] drm/amd: Remove pagemap.h includes
config: x86_64-randconfig-005-20260825 (https://download.01.org/0day-ci/archive/20260825/202608252110.deAyQBf3-lkp@intel.com/config)
compiler: clang version 22.1.3 (https://github.com/llvm/llvm-project e9846648fd6183ee6d8cbdb4502213fcf902a211)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260825/202608252110.deAyQBf3-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202608252110.deAyQBf3-lkp@intel.com/

All errors (new ones prefixed by >>):

>> drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_migrate.c:236:2: error: call to undeclared function 'unlock_page'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     236 |         unlock_page(page);
         |         ^
>> drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_migrate.c:256:3: error: call to undeclared function 'lock_page'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     256 |                 lock_page(page);
         |                 ^
   drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_migrate.c:256:3: note: did you mean 'copy_page'?
   arch/x86/include/asm/page_64.h:117:6: note: 'copy_page' declared here
     117 | void copy_page(void *to, void *from);
         |      ^
   drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_migrate.c:266:2: error: call to undeclared function 'unlock_page'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     266 |         unlock_page(page);
         |         ^
   3 errors generated.


vim +/unlock_page +236 drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_migrate.c

0b0e518d61af8e1 Felix Kuehling 2021-02-24  229  
0b0e518d61af8e1 Felix Kuehling 2021-02-24  230  static void
0b0e518d61af8e1 Felix Kuehling 2021-02-24  231  svm_migrate_put_vram_page(struct amdgpu_device *adev, unsigned long addr)
0b0e518d61af8e1 Felix Kuehling 2021-02-24  232  {
0b0e518d61af8e1 Felix Kuehling 2021-02-24  233  	struct page *page;
0b0e518d61af8e1 Felix Kuehling 2021-02-24  234  
0b0e518d61af8e1 Felix Kuehling 2021-02-24  235  	page = pfn_to_page(svm_migrate_addr_to_pfn(adev, addr));
0b0e518d61af8e1 Felix Kuehling 2021-02-24 @236  	unlock_page(page);
0b0e518d61af8e1 Felix Kuehling 2021-02-24  237  	put_page(page);
0b0e518d61af8e1 Felix Kuehling 2021-02-24  238  }
0b0e518d61af8e1 Felix Kuehling 2021-02-24  239  
48ff079b28d82db Felix Kuehling 2021-03-17  240  static unsigned long
48ff079b28d82db Felix Kuehling 2021-03-17  241  svm_migrate_addr(struct amdgpu_device *adev, struct page *page)
48ff079b28d82db Felix Kuehling 2021-03-17  242  {
48ff079b28d82db Felix Kuehling 2021-03-17  243  	unsigned long addr;
48ff079b28d82db Felix Kuehling 2021-03-17  244  
48ff079b28d82db Felix Kuehling 2021-03-17  245  	addr = page_to_pfn(page) << PAGE_SHIFT;
610dab118ff5013 Philip Yang    2023-03-31  246  	return (addr - adev->kfd.pgmap.range.start);
48ff079b28d82db Felix Kuehling 2021-03-17  247  }
48ff079b28d82db Felix Kuehling 2021-03-17  248  
48ff079b28d82db Felix Kuehling 2021-03-17  249  static struct page *
48ff079b28d82db Felix Kuehling 2021-03-17  250  svm_migrate_get_sys_page(struct vm_area_struct *vma, unsigned long addr)
48ff079b28d82db Felix Kuehling 2021-03-17  251  {
48ff079b28d82db Felix Kuehling 2021-03-17  252  	struct page *page;
48ff079b28d82db Felix Kuehling 2021-03-17  253  
48ff079b28d82db Felix Kuehling 2021-03-17  254  	page = alloc_page_vma(GFP_HIGHUSER, vma, addr);
48ff079b28d82db Felix Kuehling 2021-03-17  255  	if (page)
48ff079b28d82db Felix Kuehling 2021-03-17 @256  		lock_page(page);
48ff079b28d82db Felix Kuehling 2021-03-17  257  
48ff079b28d82db Felix Kuehling 2021-03-17  258  	return page;
48ff079b28d82db Felix Kuehling 2021-03-17  259  }
48ff079b28d82db Felix Kuehling 2021-03-17  260  

:::::: The code at line 236 was first introduced by commit
:::::: 0b0e518d61af8e1cb73cbbfb313b215640c8a6f3 drm/amdkfd: HMM migrate ram to vram

:::::: TO: Felix Kuehling <Felix.Kuehling@amd.com>
:::::: CC: Alex Deucher <alexander.deucher@amd.com>

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