[yhuang:random-r0.1i 42/42] mm/page_alloc.o:undefined reference to `node_random_promote_work'

[yhuang:random-r0.1i 42/42] mm/page_alloc.o:undefined reference to `node_random_promote_work'

[kbuild test robot]

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Hi Huang,

It's probably a bug fix that unveils the link errors.

tree:   yhuang/random-r0.1i
head:   96efac420c3a75d62cf4ff43184d4dbd0ce94b55
commit: 96efac420c3a75d62cf4ff43184d4dbd0ce94b55 [42/42] adjust promote check count
config: powerpc-defconfig (attached as .config)
compiler: powerpc64-linux-gcc (GCC) 7.4.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 96efac420c3a75d62cf4ff43184d4dbd0ce94b55
        # save the attached .config to linux build tree
        GCC_VERSION=7.4.0 make.cross ARCH=powerpc 

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

All errors (new ones prefixed by >>):

   powerpc64-linux-ld: warning: orphan section `.gnu.hash' from `linker stubs' being placed in section `.gnu.hash'.
>> mm/page_alloc.o:(.toc+0x0): undefined reference to `node_random_promote_work'
>> mm/page_alloc.o:(.toc+0x8): undefined reference to `node_random_demote_work'
   mm/migrate.o: In function `.move_to_new_page':
   migrate.c:(.text+0x35dc): undefined reference to `.inc_hmem_state'
   drivers/base/node.o: In function `.random_migrate_threshold_max_ms_store':
   node.c:(.text+0x3a4): undefined reference to `.node_random_migrate_stop'
   node.c:(.text+0x434): undefined reference to `.node_random_migrate_start'
   drivers/base/node.o: In function `.random_migrate_period_ms_store':
   node.c:(.text+0x5e0): undefined reference to `.node_random_migrate_stop'
   node.c:(.text+0x6a8): undefined reference to `.node_random_migrate_stop'
   node.c:(.text+0x6e8): undefined reference to `.node_random_migrate_start'
   drivers/base/node.o: In function `.random_migrate_mb_store':
   node.c:(.text+0x8b0): undefined reference to `.node_random_migrate_stop'
   node.c:(.text+0x8d4): undefined reference to `.node_random_migrate_start'
   node.c:(.text+0x96c): undefined reference to `.node_random_migrate_pages'

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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