Re: [PATCH v3 25/34] m68k: Convert various functions to use ptdescs

kernel test robot
2023-06-01T14:24:40Z

Hi Vishal,

kernel test robot noticed the following build errors:

[auto build test ERROR on next-20230531]
[cannot apply to akpm-mm/mm-everything s390/features powerpc/next powerpc/fixes geert-m68k/for-next geert-m68k/for-linus linus/master v6.4-rc4 v6.4-rc3 v6.4-rc2 v6.4-rc4]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url: https://github.com/intel-lab-lkp/linux/commits/Vishal-Moola-Oracle/mm-Add-PAGE_TYPE_OP-folio-functions/20230601-053454
base: next-20230531
patch link: https://lore.kernel.org/r/20230531213032.25338-26-vishal.moola%40gmail.com
patch subject: [PATCH v3 25/34] m68k: Convert various functions to use ptdescs
config: m68k-randconfig-r002-20230531 (https://download.01.org/0day-ci/archive/20230601/202306011704.i8xMWKPl-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 12.3.0
reproduce (this is a W=1 build):
mkdir -p ~/bin
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel-lab-lkp/linux/commit/915ab62dc3315fe0a0544fccb4ee5f3ee32694b5
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Vishal-Moola-Oracle/mm-Add-PAGE_TYPE_OP-folio-functions/20230601-053454
git checkout 915ab62dc3315fe0a0544fccb4ee5f3ee32694b5
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.3.0 ~/bin/make.cross W=1 O=build_dir ARCH=m68k olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.3.0 ~/bin/make.cross W=1 O=build_dir ARCH=m68k SHELL=/bin/bash arch/m68k/mm/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202306011704.i8xMWKPl-lkp@intel.com/

All error/warnings (new ones prefixed by >>):

In file included from arch/m68k/include/asm/pgalloc.h:12,
from arch/m68k/mm/init.c:26:
arch/m68k/include/asm/mcf_pgalloc.h: In function 'pgd_alloc':
>> arch/m68k/include/asm/mcf_pgalloc.h:83:59: error: 'GFP_NOWARN' undeclared (first use in this function); did you mean 'GFP_NOWAIT'?
83 | struct ptdesc *ptdesc = pagetable_alloc(GFP_DMA | GFP_NOWARN, 0);
| ^~~~~~~~~~
| GFP_NOWAIT
arch/m68k/include/asm/mcf_pgalloc.h:83:59: note: each undeclared identifier is reported only once for each function it appears in
arch/m68k/include/asm/mcf_pgalloc.h: At top level:
>> arch/m68k/include/asm/mcf_pgalloc.h:22:27: warning: 'ptdesc_address' is static but used in inline function 'pte_alloc_one_kernel' which is not static
22 | return (pte_t *) (ptdesc_address(ptdesc));
| ^~~~~~~~~~~~~~
>> arch/m68k/include/asm/mcf_pgalloc.h:17:33: warning: 'pagetable_alloc' is static but used in inline function 'pte_alloc_one_kernel' which is not static
17 | struct ptdesc *ptdesc = pagetable_alloc(GFP_DMA | __GFP_ZERO, 0);
| ^~~~~~~~~~~~~~~
>> arch/m68k/include/asm/mcf_pgalloc.h:10:24: warning: 'virt_to_ptdesc' is static but used in inline function 'pte_free_kernel' which is not static
10 | pagetable_free(virt_to_ptdesc(pte));
| ^~~~~~~~~~~~~~
>> arch/m68k/include/asm/mcf_pgalloc.h:10:9: warning: 'pagetable_free' is static but used in inline function 'pte_free_kernel' which is not static
10 | pagetable_free(virt_to_ptdesc(pte));
| ^~~~~~~~~~~~~~
--
In file included from arch/m68k/mm/mcfmmu.c:21:
arch/m68k/include/asm/mcf_pgalloc.h: In function 'pgd_alloc':
>> arch/m68k/include/asm/mcf_pgalloc.h:83:59: error: 'GFP_NOWARN' undeclared (first use in this function); did you mean 'GFP_NOWAIT'?
83 | struct ptdesc *ptdesc = pagetable_alloc(GFP_DMA | GFP_NOWARN, 0);
| ^~~~~~~~~~
| GFP_NOWAIT
arch/m68k/include/asm/mcf_pgalloc.h:83:59: note: each undeclared identifier is reported only once for each function it appears in
arch/m68k/mm/mcfmmu.c: At top level:
arch/m68k/mm/mcfmmu.c:36:13: warning: no previous prototype for 'paging_init' [-Wmissing-prototypes]
36 | void __init paging_init(void)
| ^~~~~~~~~~~
arch/m68k/mm/mcfmmu.c: In function 'paging_init':
arch/m68k/mm/mcfmmu.c:41:37: warning: variable 'bootmem_end' set but not used [-Wunused-but-set-variable]
41 | unsigned long next_pgtable, bootmem_end;
| ^~~~~~~~~~~
arch/m68k/include/asm/mcf_pgalloc.h: At top level:
>> arch/m68k/include/asm/mcf_pgalloc.h:22:27: warning: 'ptdesc_address' is static but used in inline function 'pte_alloc_one_kernel' which is not static
22 | return (pte_t *) (ptdesc_address(ptdesc));
| ^~~~~~~~~~~~~~
>> arch/m68k/include/asm/mcf_pgalloc.h:17:33: warning: 'pagetable_alloc' is static but used in inline function 'pte_alloc_one_kernel' which is not static
17 | struct ptdesc *ptdesc = pagetable_alloc(GFP_DMA | __GFP_ZERO, 0);
| ^~~~~~~~~~~~~~~
>> arch/m68k/include/asm/mcf_pgalloc.h:10:24: warning: 'virt_to_ptdesc' is static but used in inline function 'pte_free_kernel' which is not static
10 | pagetable_free(virt_to_ptdesc(pte));
| ^~~~~~~~~~~~~~
>> arch/m68k/include/asm/mcf_pgalloc.h:10:9: warning: 'pagetable_free' is static but used in inline function 'pte_free_kernel' which is not static
10 | pagetable_free(virt_to_ptdesc(pte));
| ^~~~~~~~~~~~~~

vim +83 arch/m68k/include/asm/mcf_pgalloc.h

7
8 extern inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
9 {
> 10 pagetable_free(virt_to_ptdesc(pte));
11 }
12
13 extern const char bad_pmd_string[];
14
15 extern inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
16 {
> 17 struct ptdesc *ptdesc = pagetable_alloc(GFP_DMA | __GFP_ZERO, 0);
18
19 if (!ptdesc)
20 return NULL;
21
> 22 return (pte_t *) (ptdesc_address(ptdesc));
23 }
24
25 extern inline pmd_t *pmd_alloc_kernel(pgd_t *pgd, unsigned long address)
26 {
27 return (pmd_t *) pgd;
28 }
29
30 #define pmd_populate(mm, pmd, pte) (pmd_val(*pmd) = (unsigned long)(pte))
31
32 #define pmd_populate_kernel pmd_populate
33
34 static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pgtable,
35 unsigned long address)
36 {
37 struct ptdesc *ptdesc = virt_to_ptdesc(pgtable);
38
39 pagetable_pte_dtor(ptdesc);
40 pagetable_free(ptdesc);
41 }
42
43 static inline pgtable_t pte_alloc_one(struct mm_struct *mm)
44 {
45 struct ptdesc *ptdesc = pagetable_alloc(GFP_DMA, 0);
46 pte_t *pte;
47
48 if (!ptdesc)
49 return NULL;
50 if (!pagetable_pte_ctor(ptdesc)) {
51 pagetable_free(ptdesc);
52 return NULL;
53 }
54
55 pte = ptdesc_address(ptdesc);
56 pagetable_clear(pte);
57
58 return pte;
59 }
60
61 static inline void pte_free(struct mm_struct *mm, pgtable_t pgtable)
62 {
63 struct ptdesc *ptdesc = virt_to_ptdesc(ptdesc);
64
65 pagetable_pte_dtor(ptdesc);
66 pagetable_free(ptdesc);
67 }
68
69 /*
70 * In our implementation, each pgd entry contains 1 pmd that is never allocated
71 * or freed. pgd_present is always 1, so this should never be called. -NL
72 */
73 #define pmd_free(mm, pmd) BUG()
74
75 static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
76 {
77 pagetable_free(virt_to_ptdesc(pgd));
78 }
79
80 static inline pgd_t *pgd_alloc(struct mm_struct *mm)
81 {
82 pgd_t *new_pgd;
> 83 struct ptdesc *ptdesc = pagetable_alloc(GFP_DMA | GFP_NOWARN, 0);
84
85 if (!ptdesc)
86 return NULL;
87 new_pgd = (pgd_t *) ptdesc_address(ptdesc);
88
89 memcpy(new_pgd, swapper_pg_dir, PTRS_PER_PGD * sizeof(pgd_t));
90 memset(new_pgd, 0, PAGE_OFFSET >> PGDIR_SHIFT);
91 return new_pgd;
92 }
93

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