+ mm-mempolicy-wire-up-syscall-set_mempolicy_home_node.patch added to -mm tree

3 messages, 3 authors, 2021-12-06 · open the first message on its own page

+ mm-mempolicy-wire-up-syscall-set_mempolicy_home_node.patch added to -mm tree

From: akpm@linux-foundation.org
Date: 2021-12-02 22:55:49

The patch titled
     Subject: mm/mempolicy: wire up syscall set_mempolicy_home_node
has been added to the -mm tree.  Its filename is
     mm-mempolicy-wire-up-syscall-set_mempolicy_home_node.patch

This patch should soon appear at
    https://ozlabs.org/~akpm/mmots/broken-out/mm-mempolicy-wire-up-syscall-set_mempolicy_home_node.patch
and later at
    https://ozlabs.org/~akpm/mmotm/broken-out/mm-mempolicy-wire-up-syscall-set_mempolicy_home_node.patch

Before you just go and hit "reply", please:
   a) Consider who else should be cc'ed
   b) Prefer to cc a suitable mailing list as well
   c) Ideally: find the original patch on the mailing list and do a
      reply-to-all to that, adding suitable additional cc's

*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***

The -mm tree is included into linux-next and is updated
there every 3-4 working days

------------------------------------------------------
From: "Aneesh Kumar K.V" <redacted>
Subject: mm/mempolicy: wire up syscall set_mempolicy_home_node

Link: https://lkml.kernel.org/r/20211202123810.267175-4-aneesh.kumar@linux.ibm.com
Signed-off-by: Aneesh Kumar K.V <redacted>
Cc: Ben Widawsky <redacted>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Feng Tang <redacted>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Andrea Arcangeli <redacted>
Cc: Mel Gorman <redacted>
Cc: Mike Kravetz <redacted>
Cc: Randy Dunlap <redacted>
Cc: Vlastimil Babka <redacted>
Cc: Andi Kleen <redacted>
Cc: Dan Williams <redacted>
Cc: Huang Ying <redacted>
Cc: <redacted>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 arch/alpha/kernel/syscalls/syscall.tbl      |    1 +
 arch/arm/tools/syscall.tbl                  |    1 +
 arch/arm64/include/asm/unistd.h             |    2 +-
 arch/arm64/include/asm/unistd32.h           |    2 ++
 arch/ia64/kernel/syscalls/syscall.tbl       |    1 +
 arch/m68k/kernel/syscalls/syscall.tbl       |    1 +
 arch/microblaze/kernel/syscalls/syscall.tbl |    1 +
 arch/mips/kernel/syscalls/syscall_n32.tbl   |    1 +
 arch/mips/kernel/syscalls/syscall_n64.tbl   |    1 +
 arch/mips/kernel/syscalls/syscall_o32.tbl   |    1 +
 arch/parisc/kernel/syscalls/syscall.tbl     |    1 +
 arch/powerpc/kernel/syscalls/syscall.tbl    |    1 +
 arch/s390/kernel/syscalls/syscall.tbl       |    1 +
 arch/sh/kernel/syscalls/syscall.tbl         |    1 +
 arch/sparc/kernel/syscalls/syscall.tbl      |    1 +
 arch/x86/entry/syscalls/syscall_32.tbl      |    1 +
 arch/x86/entry/syscalls/syscall_64.tbl      |    1 +
 arch/xtensa/kernel/syscalls/syscall.tbl     |    1 +
 include/linux/syscalls.h                    |    3 +++
 include/uapi/asm-generic/unistd.h           |    5 ++++-
 kernel/sys_ni.c                             |    1 +
 21 files changed, 27 insertions(+), 2 deletions(-)

--- a/arch/alpha/kernel/syscalls/syscall.tbl~mm-mempolicy-wire-up-syscall-set_mempolicy_home_node
+++ a/arch/alpha/kernel/syscalls/syscall.tbl

@@ -489,3 +489,4 @@
 # 557 reserved for memfd_secret
 558	common	process_mrelease		sys_process_mrelease
 559	common  futex_waitv                     sys_futex_waitv
+560	common	set_mempolicy_home_node		sys_ni_syscall
--- a/arch/arm64/include/asm/unistd32.h~mm-mempolicy-wire-up-syscall-set_mempolicy_home_node
+++ a/arch/arm64/include/asm/unistd32.h

@@ -905,6 +905,8 @@ __SYSCALL(__NR_landlock_restrict_self, s
 __SYSCALL(__NR_process_mrelease, sys_process_mrelease)
 #define __NR_futex_waitv 449
 __SYSCALL(__NR_futex_waitv, sys_futex_waitv)
+#define __NR_set_mempolicy_home_node 450
+__SYSCALL(__NR_set_mempolicy_home_node, sys_set_mempolicy_home_node)
 
 /*
  * Please add new compat syscalls above this comment and update
--- a/arch/arm64/include/asm/unistd.h~mm-mempolicy-wire-up-syscall-set_mempolicy_home_node
+++ a/arch/arm64/include/asm/unistd.h

@@ -38,7 +38,7 @@
 #define __ARM_NR_compat_set_tls		(__ARM_NR_COMPAT_BASE + 5)
 #define __ARM_NR_COMPAT_END		(__ARM_NR_COMPAT_BASE + 0x800)
 
-#define __NR_compat_syscalls		450
+#define __NR_compat_syscalls		451
 #endif
 
 #define __ARCH_WANT_SYS_CLONE
--- a/arch/arm/tools/syscall.tbl~mm-mempolicy-wire-up-syscall-set_mempolicy_home_node
+++ a/arch/arm/tools/syscall.tbl

@@ -463,3 +463,4 @@
 # 447 reserved for memfd_secret
 448	common	process_mrelease		sys_process_mrelease
 449	common	futex_waitv			sys_futex_waitv
+450	common	set_mempolicy_home_node		sys_set_mempolicy_home_node
--- a/arch/ia64/kernel/syscalls/syscall.tbl~mm-mempolicy-wire-up-syscall-set_mempolicy_home_node
+++ a/arch/ia64/kernel/syscalls/syscall.tbl

@@ -370,3 +370,4 @@
 # 447 reserved for memfd_secret
 448	common	process_mrelease		sys_process_mrelease
 449	common  futex_waitv                     sys_futex_waitv
+450	common	set_mempolicy_home_node		sys_set_mempolicy_home_node
--- a/arch/m68k/kernel/syscalls/syscall.tbl~mm-mempolicy-wire-up-syscall-set_mempolicy_home_node
+++ a/arch/m68k/kernel/syscalls/syscall.tbl

@@ -449,3 +449,4 @@
 # 447 reserved for memfd_secret
 448	common	process_mrelease		sys_process_mrelease
 449	common  futex_waitv                     sys_futex_waitv
+450	common	set_mempolicy_home_node		sys_set_mempolicy_home_node
--- a/arch/microblaze/kernel/syscalls/syscall.tbl~mm-mempolicy-wire-up-syscall-set_mempolicy_home_node
+++ a/arch/microblaze/kernel/syscalls/syscall.tbl

@@ -455,3 +455,4 @@
 # 447 reserved for memfd_secret
 448	common	process_mrelease		sys_process_mrelease
 449	common  futex_waitv                     sys_futex_waitv
+450	common	set_mempolicy_home_node		sys_set_mempolicy_home_node
--- a/arch/mips/kernel/syscalls/syscall_n32.tbl~mm-mempolicy-wire-up-syscall-set_mempolicy_home_node
+++ a/arch/mips/kernel/syscalls/syscall_n32.tbl

@@ -388,3 +388,4 @@
 # 447 reserved for memfd_secret
 448	n32	process_mrelease		sys_process_mrelease
 449	n32	futex_waitv			sys_futex_waitv
+450	n32	set_mempolicy_home_node		sys_set_mempolicy_home_node
--- a/arch/mips/kernel/syscalls/syscall_n64.tbl~mm-mempolicy-wire-up-syscall-set_mempolicy_home_node
+++ a/arch/mips/kernel/syscalls/syscall_n64.tbl

@@ -364,3 +364,4 @@
 # 447 reserved for memfd_secret
 448	n64	process_mrelease		sys_process_mrelease
 449	n64	futex_waitv			sys_futex_waitv
+450	common	set_mempolicy_home_node		sys_set_mempolicy_home_node
--- a/arch/mips/kernel/syscalls/syscall_o32.tbl~mm-mempolicy-wire-up-syscall-set_mempolicy_home_node
+++ a/arch/mips/kernel/syscalls/syscall_o32.tbl

@@ -437,3 +437,4 @@
 # 447 reserved for memfd_secret
 448	o32	process_mrelease		sys_process_mrelease
 449	o32	futex_waitv			sys_futex_waitv
+450	o32	set_mempolicy_home_node		sys_set_mempolicy_home_node
--- a/arch/parisc/kernel/syscalls/syscall.tbl~mm-mempolicy-wire-up-syscall-set_mempolicy_home_node
+++ a/arch/parisc/kernel/syscalls/syscall.tbl

@@ -447,3 +447,4 @@
 # 447 reserved for memfd_secret
 448	common	process_mrelease		sys_process_mrelease
 449	common	futex_waitv			sys_futex_waitv
+450	common	set_mempolicy_home_node		sys_set_mempolicy_home_node
--- a/arch/powerpc/kernel/syscalls/syscall.tbl~mm-mempolicy-wire-up-syscall-set_mempolicy_home_node
+++ a/arch/powerpc/kernel/syscalls/syscall.tbl

@@ -529,3 +529,4 @@
 # 447 reserved for memfd_secret
 448	common	process_mrelease		sys_process_mrelease
 449	common  futex_waitv                     sys_futex_waitv
+450 	nospu	set_mempolicy_home_node		sys_set_mempolicy_home_node
--- a/arch/s390/kernel/syscalls/syscall.tbl~mm-mempolicy-wire-up-syscall-set_mempolicy_home_node
+++ a/arch/s390/kernel/syscalls/syscall.tbl

@@ -452,3 +452,4 @@
 # 447 reserved for memfd_secret
 448  common	process_mrelease	sys_process_mrelease		sys_process_mrelease
 449  common	futex_waitv		sys_futex_waitv			sys_futex_waitv
+450  common	set_mempolicy_home_node	sys_set_mempolicy_home_node	sys_set_mempolicy_home_node
--- a/arch/sh/kernel/syscalls/syscall.tbl~mm-mempolicy-wire-up-syscall-set_mempolicy_home_node
+++ a/arch/sh/kernel/syscalls/syscall.tbl

@@ -452,3 +452,4 @@
 # 447 reserved for memfd_secret
 448	common	process_mrelease		sys_process_mrelease
 449	common  futex_waitv                     sys_futex_waitv
+450	common	set_mempolicy_home_node		sys_set_mempolicy_home_node
--- a/arch/sparc/kernel/syscalls/syscall.tbl~mm-mempolicy-wire-up-syscall-set_mempolicy_home_node
+++ a/arch/sparc/kernel/syscalls/syscall.tbl

@@ -495,3 +495,4 @@
 # 447 reserved for memfd_secret
 448	common	process_mrelease		sys_process_mrelease
 449	common  futex_waitv                     sys_futex_waitv
+450	common	set_mempolicy_home_node		sys_set_mempolicy_home_node
--- a/arch/x86/entry/syscalls/syscall_32.tbl~mm-mempolicy-wire-up-syscall-set_mempolicy_home_node
+++ a/arch/x86/entry/syscalls/syscall_32.tbl

@@ -454,3 +454,4 @@
 447	i386	memfd_secret		sys_memfd_secret
 448	i386	process_mrelease	sys_process_mrelease
 449	i386	futex_waitv		sys_futex_waitv
+450	i386	set_mempolicy_home_node		sys_set_mempolicy_home_node
--- a/arch/x86/entry/syscalls/syscall_64.tbl~mm-mempolicy-wire-up-syscall-set_mempolicy_home_node
+++ a/arch/x86/entry/syscalls/syscall_64.tbl

@@ -371,6 +371,7 @@
 447	common	memfd_secret		sys_memfd_secret
 448	common	process_mrelease	sys_process_mrelease
 449	common	futex_waitv		sys_futex_waitv
+450	common	set_mempolicy_home_node	sys_set_mempolicy_home_node
 
 #
 # Due to a historical design error, certain syscalls are numbered differently
--- a/arch/xtensa/kernel/syscalls/syscall.tbl~mm-mempolicy-wire-up-syscall-set_mempolicy_home_node
+++ a/arch/xtensa/kernel/syscalls/syscall.tbl

@@ -420,3 +420,4 @@
 # 447 reserved for memfd_secret
 448	common	process_mrelease		sys_process_mrelease
 449	common  futex_waitv                     sys_futex_waitv
+450	common	set_mempolicy_home_node		sys_set_mempolicy_home_node
--- a/include/linux/syscalls.h~mm-mempolicy-wire-up-syscall-set_mempolicy_home_node
+++ a/include/linux/syscalls.h

@@ -1057,6 +1057,9 @@ asmlinkage long sys_landlock_add_rule(in
 		const void __user *rule_attr, __u32 flags);
 asmlinkage long sys_landlock_restrict_self(int ruleset_fd, __u32 flags);
 asmlinkage long sys_memfd_secret(unsigned int flags);
+asmlinkage long sys_set_mempolicy_home_node(unsigned long start, unsigned long len,
+					    unsigned long home_node,
+					    unsigned long flags);
 
 /*
  * Architecture-specific system calls
--- a/include/uapi/asm-generic/unistd.h~mm-mempolicy-wire-up-syscall-set_mempolicy_home_node
+++ a/include/uapi/asm-generic/unistd.h

@@ -883,8 +883,11 @@ __SYSCALL(__NR_process_mrelease, sys_pro
 #define __NR_futex_waitv 449
 __SYSCALL(__NR_futex_waitv, sys_futex_waitv)
 
+#define __NR_set_mempolicy_home_node 450
+__SYSCALL(__NR_set_mempolicy_home_node, sys_set_mempolicy_home_node)
+
 #undef __NR_syscalls
-#define __NR_syscalls 450
+#define __NR_syscalls 451
 
 /*
  * 32 bit systems traditionally used different
--- a/kernel/sys_ni.c~mm-mempolicy-wire-up-syscall-set_mempolicy_home_node
+++ a/kernel/sys_ni.c

@@ -297,6 +297,7 @@ COND_SYSCALL(get_mempolicy);
 COND_SYSCALL(set_mempolicy);
 COND_SYSCALL(migrate_pages);
 COND_SYSCALL(move_pages);
+COND_SYSCALL(set_mempolicy_home_node);
 
 COND_SYSCALL(perf_event_open);
 COND_SYSCALL(accept4);

_

Patches currently in -mm which might be from aneesh.kumar@linux.ibm.com are

mm-mempolicy-use-policy_node-helper-with-mpol_preferred_many.patch
mm-mempolicy-add-set_mempolicy_home_node-syscall.patch
mm-mempolicy-wire-up-syscall-set_mempolicy_home_node.patch

Re: + mm-mempolicy-wire-up-syscall-set_mempolicy_home_node.patch added to -mm tree

From: kernel test robot <hidden>
Date: 2021-12-05 23:43:52

Hi,

I love your patch! Perhaps something to improve:

[auto build test WARNING on arm64/for-next/core]
[also build test WARNING on deller-parisc/for-next linus/master v5.16-rc3]
[cannot apply to geert-m68k/for-next powerpc/next s390/features arnd-asm-generic/master tip/x86/asm davem-sparc/master next-20211203]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/akpm-linux-foundation-org/mm-mempolicy-wire-up-syscall-set_mempolicy_home_node-patch-added-to-mm-tree/20211203-065847
base:   https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core
config: arm64-randconfig-r025-20211203 (https://download.01.org/0day-ci/archive/20211206/202112060718.JbZsyJcP-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 1e328b06c15273edf4a40a27ca24931b5efb3a87)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        # https://github.com/0day-ci/linux/commit/d7bb34dec7840474ed1ad87136b47eb1ea0c8bee
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review akpm-linux-foundation-org/mm-mempolicy-wire-up-syscall-set_mempolicy_home_node-patch-added-to-mm-tree/20211203-065847
        git checkout d7bb34dec7840474ed1ad87136b47eb1ea0c8bee
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <redacted>

All warnings (new ones prefixed by >>):

           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                                  ^
   <scratch space>:161:1: note: expanded from here
   __arm64_sys_process_madvise
   ^
   kernel/sys_ni.c:292:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   arch/arm64/include/asm/syscall_wrapper.h:76:13: note: expanded from macro 'COND_SYSCALL'
           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                      ^
   kernel/sys_ni.c:293:1: warning: no previous prototype for function '__arm64_sys_process_mrelease' [-Wmissing-prototypes]
   COND_SYSCALL(process_mrelease);
   ^
   arch/arm64/include/asm/syscall_wrapper.h:76:25: note: expanded from macro 'COND_SYSCALL'
           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                                  ^
   <scratch space>:162:1: note: expanded from here
   __arm64_sys_process_mrelease
   ^
   kernel/sys_ni.c:293:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   arch/arm64/include/asm/syscall_wrapper.h:76:13: note: expanded from macro 'COND_SYSCALL'
           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                      ^
   kernel/sys_ni.c:294:1: warning: no previous prototype for function '__arm64_sys_remap_file_pages' [-Wmissing-prototypes]
   COND_SYSCALL(remap_file_pages);
   ^
   arch/arm64/include/asm/syscall_wrapper.h:76:25: note: expanded from macro 'COND_SYSCALL'
           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                                  ^
   <scratch space>:163:1: note: expanded from here
   __arm64_sys_remap_file_pages
   ^
   kernel/sys_ni.c:294:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   arch/arm64/include/asm/syscall_wrapper.h:76:13: note: expanded from macro 'COND_SYSCALL'
           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                      ^
   kernel/sys_ni.c:295:1: warning: no previous prototype for function '__arm64_sys_mbind' [-Wmissing-prototypes]
   COND_SYSCALL(mbind);
   ^
   arch/arm64/include/asm/syscall_wrapper.h:76:25: note: expanded from macro 'COND_SYSCALL'
           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                                  ^
   <scratch space>:164:1: note: expanded from here
   __arm64_sys_mbind
   ^
   kernel/sys_ni.c:295:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   arch/arm64/include/asm/syscall_wrapper.h:76:13: note: expanded from macro 'COND_SYSCALL'
           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                      ^
   kernel/sys_ni.c:296:1: warning: no previous prototype for function '__arm64_sys_get_mempolicy' [-Wmissing-prototypes]
   COND_SYSCALL(get_mempolicy);
   ^
   arch/arm64/include/asm/syscall_wrapper.h:76:25: note: expanded from macro 'COND_SYSCALL'
           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                                  ^
   <scratch space>:165:1: note: expanded from here
   __arm64_sys_get_mempolicy
   ^
   kernel/sys_ni.c:296:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   arch/arm64/include/asm/syscall_wrapper.h:76:13: note: expanded from macro 'COND_SYSCALL'
           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                      ^
   kernel/sys_ni.c:297:1: warning: no previous prototype for function '__arm64_sys_set_mempolicy' [-Wmissing-prototypes]
   COND_SYSCALL(set_mempolicy);
   ^
   arch/arm64/include/asm/syscall_wrapper.h:76:25: note: expanded from macro 'COND_SYSCALL'
           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                                  ^
   <scratch space>:166:1: note: expanded from here
   __arm64_sys_set_mempolicy
   ^
   kernel/sys_ni.c:297:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   arch/arm64/include/asm/syscall_wrapper.h:76:13: note: expanded from macro 'COND_SYSCALL'
           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                      ^
   kernel/sys_ni.c:298:1: warning: no previous prototype for function '__arm64_sys_migrate_pages' [-Wmissing-prototypes]
   COND_SYSCALL(migrate_pages);
   ^
   arch/arm64/include/asm/syscall_wrapper.h:76:25: note: expanded from macro 'COND_SYSCALL'
           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                                  ^
   <scratch space>:167:1: note: expanded from here
   __arm64_sys_migrate_pages
   ^
   kernel/sys_ni.c:298:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   arch/arm64/include/asm/syscall_wrapper.h:76:13: note: expanded from macro 'COND_SYSCALL'
           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                      ^
   kernel/sys_ni.c:299:1: warning: no previous prototype for function '__arm64_sys_move_pages' [-Wmissing-prototypes]
   COND_SYSCALL(move_pages);
   ^
   arch/arm64/include/asm/syscall_wrapper.h:76:25: note: expanded from macro 'COND_SYSCALL'
           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                                  ^
   <scratch space>:168:1: note: expanded from here
   __arm64_sys_move_pages
   ^
   kernel/sys_ni.c:299:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   arch/arm64/include/asm/syscall_wrapper.h:76:13: note: expanded from macro 'COND_SYSCALL'
           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                      ^

quoted

kernel/sys_ni.c:300:1: warning: no previous prototype for function '__arm64_sys_set_mempolicy_home_node' [-Wmissing-prototypes]

   COND_SYSCALL(set_mempolicy_home_node);
   ^
   arch/arm64/include/asm/syscall_wrapper.h:76:25: note: expanded from macro 'COND_SYSCALL'
           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                                  ^
   <scratch space>:169:1: note: expanded from here
   __arm64_sys_set_mempolicy_home_node
   ^
   kernel/sys_ni.c:300:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   arch/arm64/include/asm/syscall_wrapper.h:76:13: note: expanded from macro 'COND_SYSCALL'
           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                      ^
   kernel/sys_ni.c:302:1: warning: no previous prototype for function '__arm64_sys_perf_event_open' [-Wmissing-prototypes]
   COND_SYSCALL(perf_event_open);
   ^
   arch/arm64/include/asm/syscall_wrapper.h:76:25: note: expanded from macro 'COND_SYSCALL'
           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                                  ^
   <scratch space>:170:1: note: expanded from here
   __arm64_sys_perf_event_open
   ^
   kernel/sys_ni.c:302:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   arch/arm64/include/asm/syscall_wrapper.h:76:13: note: expanded from macro 'COND_SYSCALL'
           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                      ^
   kernel/sys_ni.c:303:1: warning: no previous prototype for function '__arm64_sys_accept4' [-Wmissing-prototypes]
   COND_SYSCALL(accept4);
   ^
   arch/arm64/include/asm/syscall_wrapper.h:76:25: note: expanded from macro 'COND_SYSCALL'
           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                                  ^
   <scratch space>:171:1: note: expanded from here
   __arm64_sys_accept4
   ^
   kernel/sys_ni.c:303:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   arch/arm64/include/asm/syscall_wrapper.h:76:13: note: expanded from macro 'COND_SYSCALL'
           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                      ^
   kernel/sys_ni.c:304:1: warning: no previous prototype for function '__arm64_sys_recvmmsg' [-Wmissing-prototypes]
   COND_SYSCALL(recvmmsg);
   ^
   arch/arm64/include/asm/syscall_wrapper.h:76:25: note: expanded from macro 'COND_SYSCALL'
           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                                  ^
   <scratch space>:172:1: note: expanded from here
   __arm64_sys_recvmmsg
   ^
   kernel/sys_ni.c:304:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   arch/arm64/include/asm/syscall_wrapper.h:76:13: note: expanded from macro 'COND_SYSCALL'
           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                      ^
   kernel/sys_ni.c:305:1: warning: no previous prototype for function '__arm64_sys_recvmmsg_time32' [-Wmissing-prototypes]
   COND_SYSCALL(recvmmsg_time32);
   ^
   arch/arm64/include/asm/syscall_wrapper.h:76:25: note: expanded from macro 'COND_SYSCALL'
           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                                  ^
   <scratch space>:173:1: note: expanded from here
   __arm64_sys_recvmmsg_time32
   ^
   kernel/sys_ni.c:305:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   arch/arm64/include/asm/syscall_wrapper.h:76:13: note: expanded from macro 'COND_SYSCALL'
           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                      ^
   kernel/sys_ni.c:306:1: warning: no previous prototype for function '__arm64_compat_sys_recvmmsg_time32' [-Wmissing-prototypes]
   COND_SYSCALL_COMPAT(recvmmsg_time32);
   ^
   arch/arm64/include/asm/syscall_wrapper.h:41:25: note: expanded from macro 'COND_SYSCALL_COMPAT'
           asmlinkage long __weak __arm64_compat_sys_##name(const struct pt_regs *regs)    \
                                  ^
   <scratch space>:174:1: note: expanded from here
   __arm64_compat_sys_recvmmsg_time32
   ^
   kernel/sys_ni.c:306:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   arch/arm64/include/asm/syscall_wrapper.h:41:13: note: expanded from macro 'COND_SYSCALL_COMPAT'
           asmlinkage long __weak __arm64_compat_sys_##name(const struct pt_regs *regs)    \
                      ^
   kernel/sys_ni.c:307:1: warning: no previous prototype for function '__arm64_compat_sys_recvmmsg_time64' [-Wmissing-prototypes]
   COND_SYSCALL_COMPAT(recvmmsg_time64);
   ^
   arch/arm64/include/asm/syscall_wrapper.h:41:25: note: expanded from macro 'COND_SYSCALL_COMPAT'
           asmlinkage long __weak __arm64_compat_sys_##name(const struct pt_regs *regs)    \
                                  ^
   <scratch space>:2:1: note: expanded from here
   __arm64_compat_sys_recvmmsg_time64
   ^
   kernel/sys_ni.c:307:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   arch/arm64/include/asm/syscall_wrapper.h:41:13: note: expanded from macro 'COND_SYSCALL_COMPAT'
           asmlinkage long __weak __arm64_compat_sys_##name(const struct pt_regs *regs)    \
                      ^
   kernel/sys_ni.c:314:1: warning: no previous prototype for function '__arm64_sys_fanotify_init' [-Wmissing-prototypes]
   COND_SYSCALL(fanotify_init);
   ^
   arch/arm64/include/asm/syscall_wrapper.h:76:25: note: expanded from macro 'COND_SYSCALL'
           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                                  ^
   <scratch space>:3:1: note: expanded from here
   __arm64_sys_fanotify_init
   ^
   kernel/sys_ni.c:314:1: note: declare 'static' if the function is not intended to be used outside of this translation unit


vim +/__arm64_sys_set_mempolicy_home_node +300 kernel/sys_ni.c

   280	
   281	/* mm/, CONFIG_MMU only */
   282	COND_SYSCALL(swapon);
   283	COND_SYSCALL(swapoff);
   284	COND_SYSCALL(mprotect);
   285	COND_SYSCALL(msync);
   286	COND_SYSCALL(mlock);
   287	COND_SYSCALL(munlock);
   288	COND_SYSCALL(mlockall);
   289	COND_SYSCALL(munlockall);
   290	COND_SYSCALL(mincore);
   291	COND_SYSCALL(madvise);
   292	COND_SYSCALL(process_madvise);
   293	COND_SYSCALL(process_mrelease);
   294	COND_SYSCALL(remap_file_pages);
   295	COND_SYSCALL(mbind);
   296	COND_SYSCALL(get_mempolicy);
   297	COND_SYSCALL(set_mempolicy);
   298	COND_SYSCALL(migrate_pages);
   299	COND_SYSCALL(move_pages);
 > 300	COND_SYSCALL(set_mempolicy_home_node);
   301	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Re: + mm-mempolicy-wire-up-syscall-set_mempolicy_home_node.patch added to -mm tree

From: Aneesh Kumar K.V <hidden>
Date: 2021-12-06 06:14:49

kernel test robot [off-list ref] writes:

Hi,

I love your patch! Perhaps something to improve:

[auto build test WARNING on arm64/for-next/core]
[also build test WARNING on deller-parisc/for-next linus/master v5.16-rc3]
[cannot apply to geert-m68k/for-next powerpc/next s390/features arnd-asm-generic/master tip/x86/asm davem-sparc/master next-20211203]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/akpm-linux-foundation-org/mm-mempolicy-wire-up-syscall-set_mempolicy_home_node-patch-added-to-mm-tree/20211203-065847
base:   https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core
config: arm64-randconfig-r025-20211203 (https://download.01.org/0day-ci/archive/20211206/202112060718.JbZsyJcP-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 1e328b06c15273edf4a40a27ca24931b5efb3a87)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        # https://github.com/0day-ci/linux/commit/d7bb34dec7840474ed1ad87136b47eb1ea0c8bee
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review akpm-linux-foundation-org/mm-mempolicy-wire-up-syscall-set_mempolicy_home_node-patch-added-to-mm-tree/20211203-065847
        git checkout d7bb34dec7840474ed1ad87136b47eb1ea0c8bee
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <redacted>

All warnings (new ones prefixed by >>):

           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                                  ^
   <scratch space>:161:1: note: expanded from here
   __arm64_sys_process_madvise
   ^
   kernel/sys_ni.c:292:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   arch/arm64/include/asm/syscall_wrapper.h:76:13: note: expanded from macro 'COND_SYSCALL'
           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                      ^
   kernel/sys_ni.c:293:1: warning: no previous prototype for function '__arm64_sys_process_mrelease' [-Wmissing-prototypes]
   COND_SYSCALL(process_mrelease);
   ^
   arch/arm64/include/asm/syscall_wrapper.h:76:25: note: expanded from macro 'COND_SYSCALL'
           asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs)   \
                                  ^
   <scratch space>:162:1: note: expanded from here
   __arm64_sys_process_mrelease

These build warnings with W=1 are related to arm header includes. arm64
expand syscall macro such that '__arm64_' is added to the syscall
handler name. Hence the include  linux/syscall.h that have below
prototype is not sufficient.   
asmlinkage long sys_set_mempolicy_home_node(unsigned long start, unsigned long len,
					    unsigned long home_node,
					    unsigned long flags);


That should be fixed outside this series.

-aneesh

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