Sorry for this. Only test on arm64. Should be this: +#if IS_ENABLED(CONFIG_CMA) + if (gfp_flags & __GFP_MOVABLE) + return MIGRATE_CMA; +#endif On 2016/11/3 17:54, kbuild test robot wrote: > Hi Chen, > > [auto build test ERROR on mmotm/master] > [also build test ERROR on v4.9-rc3 next-20161028] > [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] > > url: https://github.com/0day-ci/linux/commits/Chen-Feng/mm-cma-improve-utilization-of-cma-pages/20161103-173624 > base: git://git.cmpxchg.org/linux-mmotm.git master > config: x86_64-randconfig-x011-201644 (attached as .config) > compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 > reproduce: > # save the attached .config to linux build tree > make ARCH=x86_64 > > All errors (new ones prefixed by >>): > > In file included from include/linux/slab.h:14:0, > from include/linux/crypto.h:24, > from arch/x86/kernel/asm-offsets.c:8: > include/linux/gfp.h: In function 'gfpflags_to_migratetype': >>> include/linux/gfp.h:274:10: error: 'MIGRATE_CMA' undeclared (first use in this function) > return MIGRATE_CMA; > ^~~~~~~~~~~ > include/linux/gfp.h:274:10: note: each undeclared identifier is reported only once for each function it appears in > make[2]: *** [arch/x86/kernel/asm-offsets.s] Error 1 > make[2]: Target '__build' not remade because of errors. > make[1]: *** [prepare0] Error 2 > make[1]: Target 'prepare' not remade because of errors. > make: *** [sub-make] Error 2 > > vim +/MIGRATE_CMA +274 include/linux/gfp.h > > 268 { > 269 VM_WARN_ON((gfp_flags & GFP_MOVABLE_MASK) == GFP_MOVABLE_MASK); > 270 BUILD_BUG_ON((1UL << GFP_MOVABLE_SHIFT) != ___GFP_MOVABLE); > 271 BUILD_BUG_ON((___GFP_MOVABLE >> GFP_MOVABLE_SHIFT) != MIGRATE_MOVABLE); > 272 > 273 if (IS_ENABLED(CONFIG_CMA) && gfp_flags & __GFP_MOVABLE) > > 274 return MIGRATE_CMA; > 275 > 276 if (unlikely(page_group_by_mobility_disabled)) > 277 return MIGRATE_UNMOVABLE; > > --- > 0-DAY kernel test infrastructure Open Source Technology Center > https://lists.01.org/pipermail/kbuild-all Intel Corporation > -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>