Build error on s390: arch/s390/kernel/entry.o: in function `sys_call_table_emu': In commit ("All arch: remove system call sys_sysctl") 148 common fdatasync sys_fdatasync sys_fdatasync -149 common _sysctl sys_sysctl compat_sys_sysctl +149 common _sysctl sys_ni_syscall 150 common mlock sys_mlock sys_mlock After the patch is integrated, there is a format error in the generated arch/s390/include/generated/asm/syscall_table.h: SYSCALL(sys_fdatasync, sys_fdatasync) SYSCALL(sys_ni_syscall,) /* cause build error */ SYSCALL(sys_mlock,sys_mlock) According to the guidance of Heiko Carstens, use "-" to fill the empty system call Similarly, modify tools/perf/arch/s390/entry/syscalls/syscall.tbl. Fixes: ("All arch: remove system call sys_sysctl") Fixes: https://lore.kernel.org/linuxppc-dev/20200616030734.87257-1-nixiaoming@hu... Reported-by: kernel test robot <lkp(a)intel.com&gt; Signed-off-by: Xiaoming Ni <nixiaoming(a)huawei.com&gt; changes in v2: use "-" to fill the empty system call v1: https://lore.kernel.org/lkml/20200618110320.104013-1-nixiaoming@huawei.com/ --- arch/s390/kernel/syscalls/syscall.tbl | 2 +- tools/perf/arch/s390/entry/syscalls/syscall.tbl | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/s390/kernel/syscalls/syscall.tbl b/arch/s390/kernel/syscalls/syscall.tbl index f17aaf6fe5de..04c34c2ed916 100644 --- a/arch/s390/kernel/syscalls/syscall.tbl +++ b/arch/s390/kernel/syscalls/syscall.tbl @@ -138,7 +138,7 @@ 146 common writev sys_writev compat_sys_writev 147 common getsid sys_getsid sys_getsid 148 common fdatasync sys_fdatasync sys_fdatasync -149 common _sysctl sys_ni_syscall +149 common _sysctl - - 150 common mlock sys_mlock sys_mlock 151 common munlock sys_munlock sys_munlock 152 common mlockall sys_mlockall sys_mlockall diff --git a/tools/perf/arch/s390/entry/syscalls/syscall.tbl b/tools/perf/arch/s390/entry/syscalls/syscall.tbl index 0193f9b98753..29144b79a49d 100644 --- a/tools/perf/arch/s390/entry/syscalls/syscall.tbl +++ b/tools/perf/arch/s390/entry/syscalls/syscall.tbl @@ -138,7 +138,7 @@ 146 common writev sys_writev compat_sys_writev 147 common getsid sys_getsid sys_getsid 148 common fdatasync sys_fdatasync sys_fdatasync -149 common _sysctl sys_ni_syscall +149 common _sysctl - - 150 common mlock sys_mlock compat_sys_mlock 151 common munlock sys_munlock compat_sys_munlock 152 common mlockall sys_mlockall sys_mlockall -- 2.27.0