tree:   git://git.cmpxchg.org/linux-mmotm.git master
head:   59f7a5af1a6c9e19c6e5152f26548c494a2d7338
commit: c824a9dc5e8821ce083652d4f728e804161d3dd0 [162/365] mm: account pmd page tables to the process
config: microblaze-mmu_defconfig (attached as .config)
reproduce:
  wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
  chmod +x ~/bin/make.cross
  git checkout c824a9dc5e8821ce083652d4f728e804161d3dd0
  # save the attached .config to linux build tree
  make.cross ARCH=microblaze 

All error/warnings:

   In file included from arch/microblaze/include/asm/bug.h:1:0,
                    from include/linux/bug.h:4,
                    from include/linux/thread_info.h:11,
                    from include/asm-generic/preempt.h:4,
                    from arch/microblaze/include/generated/asm/preempt.h:1,
                    from include/linux/preempt.h:18,
                    from include/linux/spinlock.h:50,
                    from include/linux/mmzone.h:7,
                    from include/linux/gfp.h:5,
                    from include/linux/slab.h:14,
                    from mm/mmap.c:12:
   mm/mmap.c: In function 'exit_mmap':
>> mm/mmap.c:2858:46: error: 'PUD_SHIFT' undeclared (first use in this function)
       round_up(FIRST_USER_ADDRESS, PUD_SIZE) >> PUD_SHIFT);
                                                 ^
   include/asm-generic/bug.h:86:25: note: in definition of macro 'WARN_ON'
     int __ret_warn_on = !!(condition);    \
                            ^
   mm/mmap.c:2858:46: note: each undeclared identifier is reported only once for each function it appears in
       round_up(FIRST_USER_ADDRESS, PUD_SIZE) >> PUD_SHIFT);
                                                 ^
   include/asm-generic/bug.h:86:25: note: in definition of macro 'WARN_ON'
     int __ret_warn_on = !!(condition);    \
                            ^

vim +/PUD_SHIFT +2858 mm/mmap.c

  2852		}
  2853		vm_unacct_memory(nr_accounted);
  2854	
  2855		WARN_ON(atomic_long_read(&mm->nr_ptes) >
  2856				round_up(FIRST_USER_ADDRESS, PMD_SIZE) >> PMD_SHIFT);
  2857		WARN_ON(mm_nr_pmds(mm) >
> 2858				round_up(FIRST_USER_ADDRESS, PUD_SIZE) >> PUD_SHIFT);
  2859	}
  2860	
  2861	/* Insert vm structure into process list sorted by address

---
0-DAY kernel test infrastructure                Open Source Technology Center
http://lists.01.org/mailman/listinfo/kbuild                 Intel Corporation