APPLDATA_BASE should depend on PROC_SYSCTL instead of PROC_FS. Building with PROC_FS but not PROC_SYSCTL causes a build error, since appldata_base.c uses data and APIs from fs/proc/proc_sysctl.c. arch/s390/appldata/appldata_base.o: in function `appldata_generic_handler': appldata_base.c:(.text+0x192): undefined reference to `sysctl_vals' Fixes: c185b783b099 ("[S390] Remove config options.") Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> Cc: Heiko Carstens <hca@xxxxxxxxxxxxx> Cc: Vasily Gorbik <gor@xxxxxxxxxxxxx> Cc: Christian Borntraeger <borntraeger@xxxxxxxxxx> Cc: linux-s390@xxxxxxxxxxxxxxx --- arch/s390/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- linux-next-20210526.orig/arch/s390/Kconfig +++ linux-next-20210526/arch/s390/Kconfig @@ -853,7 +853,7 @@ config CMM_IUCV config APPLDATA_BASE def_bool n prompt "Linux - VM Monitor Stream, base infrastructure" - depends on PROC_FS + depends on PROC_SYSCTL help This provides a kernel interface for creating and updating z/VM APPLDATA monitor records. The monitor records are updated at certain time