Re: [linux-next:master 6698/6711] <stdin>:1520:2: warning: #warning syscall process_madvise not implemented

[Minchan Kim <minchan@kernel.org>]

On Fri, May 08, 2020 at 07:37:19AM +0800, kbuild test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> head:   7def1ef0f72c3ebe3e42467d2f73c4e56153fa49
> commit: db22c0ad9503eda042475aca2675cdce55249b4b [6698/6711] mm/madvise: introduce process_madvise() syscall: an external memory hinting API
> config: mips-ip27_defconfig (attached as .config)
> compiler: mips64-linux-gcc (GCC) 9.3.0
> reproduce:
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         git checkout db22c0ad9503eda042475aca2675cdce55249b4b
>         # save the attached .config to linux build tree
>         COMPILER_INSTALL_PATH=$HOME/0day GCC_VERSION=9.3.0 make.cross ARCH=mips 
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kbuild test robot <lkp@intel.com>
> 
> All warnings (new ones prefixed by >>):
> 
> >> <stdin>:1520:2: warning: #warning syscall process_madvise not implemented [-Wcpp]
> --
> >> <stdin>:1520:2: warning: #warning syscall process_madvise not implemented [-Wcpp]
> --
> >> <stdin>:1520:2: warning: #warning syscall process_madvise not implemented [-Wcpp]
> 
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Thanks for the report. This patch should fix it.

From 2b93b6abc2a32683cdccb6f109617e1a597466c8 Mon Sep 17 00:00:00 2001
From: Minchan Kim <minchan@kernel.org>
Date: Thu, 7 May 2020 22:18:21 -0700
Subject: [PATCH] mm: fix build error for mips of process_madvise

kbuild test rebot reported build break of process_madvise for mips[1].
This patch should fix it.

[1] https://lore.kernel.org/linux-mm/202005080716.cUcbCQ3i%25lkp@intel.com/
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Minchan Kim <minchan@kernel.org>
---
 arch/mips/kernel/syscalls/syscall_o32.tbl | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/mips/kernel/syscalls/syscall_o32.tbl b/arch/mips/kernel/syscalls/syscall_o32.tbl
index ac586774c980..940c7f49a731 100644
--- a/arch/mips/kernel/syscalls/syscall_o32.tbl
+++ b/arch/mips/kernel/syscalls/syscall_o32.tbl
@@ -425,3 +425,4 @@
 435	o32	clone3				__sys_clone3
 437	o32	openat2				sys_openat2
 438	o32	pidfd_getfd			sys_pidfd_getfd
+439	o32	process_madvise			sys_process_madvise		compat_sys_process_madvise
-- 
2.26.2.645.ge9eca65c58-goog