Hi, [auto build test ERROR on v4.6-rc4] [also build test ERROR on next-20160419] [if your patch is applied to the wrong git tree, please drop us a note to help improving the system] url: https://github.com/0day-ci/linux/commits/Liang-Li/speed-up-live-migration-by-skipping-free-pages/20160419-224707 config: arm-allnoconfig (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 # save the attached .config to linux build tree make.cross ARCH=arm All errors (new ones prefixed by >>): mm/built-in.o: In function `get_free_pages': >> :(.text+0x3db4): undefined reference to `drop_cache' --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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