arch/x86/entry/vdso/vdso32/../vgetcpu.c:13:1: error: no previous prototype for '__vdso_getcpu'

From: kernel test robot
Date: Thu Mar 30 2023 - 23:23:33 EST


Hi Sebastian,

FYI, the error/warning still remains.

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 62bad54b26db8bc98e28749cd76b2d890edb4258
commit: 92d33063c081a82d25dd08a9cce03947c8ed9164 x86/vdso: Provide getcpu for x86-32.
date: 8 weeks ago
config: x86_64-sof-customedconfig-edison-defconfig (https://download.01.org/0day-ci/archive/20230331/202303311104.UfM3VgM1-lkp@xxxxxxxxx/config)
compiler: gcc-11 (Debian 11.3.0-8) 11.3.0
reproduce (this is a W=1 build):
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=92d33063c081a82d25dd08a9cce03947c8ed9164
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 92d33063c081a82d25dd08a9cce03947c8ed9164
# save the config file
mkdir build_dir && cp config build_dir/.config
make W=1 O=build_dir ARCH=x86_64 olddefconfig
make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Link: https://lore.kernel.org/oe-kbuild-all/202303311104.UfM3VgM1-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

In file included from arch/x86/entry/vdso/vdso32/vgetcpu.c:2:
>> arch/x86/entry/vdso/vdso32/../vgetcpu.c:13:1: error: no previous prototype for '__vdso_getcpu' [-Werror=missing-prototypes]
13 | __vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *unused)
| ^~~~~~~~~~~~~
cc1: all warnings being treated as errors


vim +/__vdso_getcpu +13 arch/x86/entry/vdso/vdso32/../vgetcpu.c

2aae950b21e4bc7 arch/x86_64/vdso/vgetcpu.c Andi Kleen 2007-07-21 11
23adec554a7648f arch/x86/vdso/vgetcpu.c Steven Rostedt 2008-05-12 12 notrace long
23adec554a7648f arch/x86/vdso/vgetcpu.c Steven Rostedt 2008-05-12 @13 __vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *unused)
2aae950b21e4bc7 arch/x86_64/vdso/vgetcpu.c Andi Kleen 2007-07-21 14 {
22245bdf0ad805d arch/x86/entry/vdso/vgetcpu.c Ingo Molnar 2018-10-08 15 vdso_read_cpunode(cpu, node);
ec3a94188df7d28 arch/x86/entry/vdso/vgetcpu.c Ingo Molnar 2018-10-08 16
2aae950b21e4bc7 arch/x86_64/vdso/vgetcpu.c Andi Kleen 2007-07-21 17 return 0;
2aae950b21e4bc7 arch/x86_64/vdso/vgetcpu.c Andi Kleen 2007-07-21 18 }
2aae950b21e4bc7 arch/x86_64/vdso/vgetcpu.c Andi Kleen 2007-07-21 19

:::::: The code at line 13 was first introduced by commit
:::::: 23adec554a7648f99c8acc0caf49c66320cd2b84 x86: add notrace annotations to vsyscall.

:::::: TO: Steven Rostedt <srostedt@xxxxxxxxxx>
:::::: CC: Thomas Gleixner <tglx@xxxxxxxxxxxxx>

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https://github.com/intel/lkp-tests