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From: kernel test robot <lkp@intel.com>
To: Zach O'Keefe <zokeefe@google.com>
Cc: kbuild-all@lists.01.org,
	Linux Memory Management List <linux-mm@kvack.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Yang Shi <shy828301@gmail.com>
Subject: [linux-next:master 4278/4736] arch/mips/include/asm/pgtable.h:238:39: error: missing binary operator before token "("
Date: Fri, 2 Sep 2022 13:19:34 +0800	[thread overview]
Message-ID: <202209021349.F73i5d6X-lkp@intel.com> (raw)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   e47eb90a0a9ae20b82635b9b99a8d0979b757ad8
commit: 2abbc27432878c26759d2913a22a7a15a66b96fd [4278/4736] mm/khugepaged: use minimal bits to store num page < HPAGE_PMD_NR
config: mips-randconfig-r013-20220901 (https://download.01.org/0day-ci/archive/20220902/202209021349.F73i5d6X-lkp@intel.com/config)
compiler: mips-linux-gcc (GCC) 12.1.0
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/next/linux-next.git/commit/?id=2abbc27432878c26759d2913a22a7a15a66b96fd
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout 2abbc27432878c26759d2913a22a7a15a66b96fd
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>

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

   In file included from include/linux/pgtable.h:6,
                    from include/linux/mm.h:29,
                    from mm/khugepaged.c:4:
>> arch/mips/include/asm/pgtable.h:238:26: warning: "__builtin_ffs" is not defined, evaluates to 0 [-Wundef]
     238 | #define PTE_T_LOG2      (__builtin_ffs(sizeof(pte_t)) - 1)
         |                          ^~~~~~~~~~~~~
   arch/mips/include/asm/pgtable-32.h:65:43: note: in expansion of macro 'PTE_T_LOG2'
      65 | # define PGDIR_SHIFT    (2 * PAGE_SHIFT - PTE_T_LOG2 - 1)
         |                                           ^~~~~~~~~~
   include/asm-generic/pgtable-nop4d.h:11:33: note: in expansion of macro 'PGDIR_SHIFT'
      11 | #define P4D_SHIFT               PGDIR_SHIFT
         |                                 ^~~~~~~~~~~
   include/asm-generic/pgtable-nopud.h:18:25: note: in expansion of macro 'P4D_SHIFT'
      18 | #define PUD_SHIFT       P4D_SHIFT
         |                         ^~~~~~~~~
   include/asm-generic/pgtable-nopmd.h:20:25: note: in expansion of macro 'PUD_SHIFT'
      20 | #define PMD_SHIFT       PUD_SHIFT
         |                         ^~~~~~~~~
   include/linux/huge_mm.h:109:25: note: in expansion of macro 'PMD_SHIFT'
     109 | #define HPAGE_PMD_SHIFT PMD_SHIFT
         |                         ^~~~~~~~~
   include/linux/huge_mm.h:105:26: note: in expansion of macro 'HPAGE_PMD_SHIFT'
     105 | #define HPAGE_PMD_ORDER (HPAGE_PMD_SHIFT-PAGE_SHIFT)
         |                          ^~~~~~~~~~~~~~~
   mm/khugepaged.c:90:5: note: in expansion of macro 'HPAGE_PMD_ORDER'
      90 | #if HPAGE_PMD_ORDER < 16
         |     ^~~~~~~~~~~~~~~
>> arch/mips/include/asm/pgtable.h:238:39: error: missing binary operator before token "("
     238 | #define PTE_T_LOG2      (__builtin_ffs(sizeof(pte_t)) - 1)
         |                                       ^
   arch/mips/include/asm/pgtable-32.h:65:43: note: in expansion of macro 'PTE_T_LOG2'
      65 | # define PGDIR_SHIFT    (2 * PAGE_SHIFT - PTE_T_LOG2 - 1)
         |                                           ^~~~~~~~~~
   include/asm-generic/pgtable-nop4d.h:11:33: note: in expansion of macro 'PGDIR_SHIFT'
      11 | #define P4D_SHIFT               PGDIR_SHIFT
         |                                 ^~~~~~~~~~~
   include/asm-generic/pgtable-nopud.h:18:25: note: in expansion of macro 'P4D_SHIFT'
      18 | #define PUD_SHIFT       P4D_SHIFT
         |                         ^~~~~~~~~
   include/asm-generic/pgtable-nopmd.h:20:25: note: in expansion of macro 'PUD_SHIFT'
      20 | #define PMD_SHIFT       PUD_SHIFT
         |                         ^~~~~~~~~
   include/linux/huge_mm.h:109:25: note: in expansion of macro 'PMD_SHIFT'
     109 | #define HPAGE_PMD_SHIFT PMD_SHIFT
         |                         ^~~~~~~~~
   include/linux/huge_mm.h:105:26: note: in expansion of macro 'HPAGE_PMD_SHIFT'
     105 | #define HPAGE_PMD_ORDER (HPAGE_PMD_SHIFT-PAGE_SHIFT)
         |                          ^~~~~~~~~~~~~~~
   mm/khugepaged.c:90:5: note: in expansion of macro 'HPAGE_PMD_ORDER'
      90 | #if HPAGE_PMD_ORDER < 16
         |     ^~~~~~~~~~~~~~~


vim +238 arch/mips/include/asm/pgtable.h

^1da177e4c3f41 include/asm-mips/pgtable.h Linus Torvalds 2005-04-16  235  
5ff974720abec2 include/asm-mips/pgtable.h Ralf Baechle   2007-08-01  236  #define PGD_T_LOG2	(__builtin_ffs(sizeof(pgd_t)) - 1)
5ff974720abec2 include/asm-mips/pgtable.h Ralf Baechle   2007-08-01  237  #define PMD_T_LOG2	(__builtin_ffs(sizeof(pmd_t)) - 1)
5ff974720abec2 include/asm-mips/pgtable.h Ralf Baechle   2007-08-01 @238  #define PTE_T_LOG2	(__builtin_ffs(sizeof(pte_t)) - 1)
^1da177e4c3f41 include/asm-mips/pgtable.h Linus Torvalds 2005-04-16  239  

:::::: The code at line 238 was first introduced by commit
:::::: 5ff974720abec255c17af6f3732dd410d364e367 [MIPS] Fix computation of {PGD,PMD,PTE}_T_LOG2.

:::::: TO: Ralf Baechle <ralf@linux-mips.org>
:::::: CC: Ralf Baechle <ralf@linux-mips.org>

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp


             reply	other threads:[~2022-09-02  5:20 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-09-02  5:19 kernel test robot [this message]
2022-09-03  0:32 ` [linux-next:master 4278/4736] arch/mips/include/asm/pgtable.h:238:39: error: missing binary operator before token "(" Zach O'Keefe

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