On Fri, Jul 24, 2015 at 09:27:53AM -0700, Jim Davis wrote: > warning: (HWPOISON_INJECT && MEM_SOFT_DIRTY && IDLE_PAGE_TRACKING) > selects PROC_PAGE_MONITOR which has unmet direct dependencies (PROC_FS > && MMU) > > mm/built-in.o: In function `page_ext_init_flatmem': > (.init.text+0x30ef): undefined reference to `page_idle_ops' > mm/built-in.o: In function `page_ext_init_flatmem': > (.init.text+0x3172): undefined reference to `page_idle_ops' This has already been reported by the kbuild test robot, see: [mmotm:master 260/385] warning: (HWPOISON_INJECT && ..) selects PROC_PAGE_MONITOR which has unmet direct dependencies (PROC_FS && ..) It should be fixed by: From: Vladimir Davydov <vdavydov@xxxxxxxxxxxxx> Subject: [PATCH] mm/Kconfig: fix IDLE_PAGE_TRACKING dependencies Fixes: proc-add-kpageidle-file Signed-off-by: Vladimir Davydov <vdavydov@xxxxxxxxxxxxx> diff --git a/mm/Kconfig b/mm/Kconfig index db817e2c2ec8..a1de09926171 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -657,6 +657,7 @@ config DEFERRED_STRUCT_PAGE_INIT config IDLE_PAGE_TRACKING bool "Enable idle page tracking" + depends on PROC_FS && MMU select PROC_PAGE_MONITOR select PAGE_EXTENSION if !64BIT help -- 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>