[palmer:for-next 18/18] arch/riscv/kernel/vdso/vgettimeofday.c:16:16: error: implicit declaration of function '__cvdso_clock_gettime'; did you mean '__vdso_clock_gettime'?

From: kernel test robot
Date: Wed Aug 25 2021 - 04:39:25 EST

Hi Saleem,

First bad commit (maybe != root cause):

tree: https://git.kernel.org/pub/scm/linux/kernel/git/palmer/linux.git for-next
head: fde9c59aebafb91caeed816cc510b56f14aa63ae
commit: fde9c59aebafb91caeed816cc510b56f14aa63ae [18/18] riscv: explicitly use symbol offsets for VDSO
config: riscv-nommu_k210_defconfig (attached as .config)
compiler: riscv64-linux-gcc (GCC) 11.2.0
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
# https://git.kernel.org/pub/scm/linux/kernel/git/palmer/linux.git/commit/?id=fde9c59aebafb91caeed816cc510b56f14aa63ae
git remote add palmer https://git.kernel.org/pub/scm/linux/kernel/git/palmer/linux.git
git fetch --no-tags palmer for-next
git checkout fde9c59aebafb91caeed816cc510b56f14aa63ae
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=riscv

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

All errors (new ones prefixed by >>):

arch/riscv/kernel/vdso/vgettimeofday.c: In function '__vdso_clock_gettime':
>> arch/riscv/kernel/vdso/vgettimeofday.c:16:16: error: implicit declaration of function '__cvdso_clock_gettime'; did you mean '__vdso_clock_gettime'? [-Werror=implicit-function-declaration]
16 | return __cvdso_clock_gettime(clock, ts);
| ^~~~~~~~~~~~~~~~~~~~~
| __vdso_clock_gettime
arch/riscv/kernel/vdso/vgettimeofday.c: In function '__vdso_gettimeofday':
>> arch/riscv/kernel/vdso/vgettimeofday.c:23:16: error: implicit declaration of function '__cvdso_gettimeofday'; did you mean '__vdso_gettimeofday'? [-Werror=implicit-function-declaration]
23 | return __cvdso_gettimeofday(tv, tz);
| ^~~~~~~~~~~~~~~~~~~~
| __vdso_gettimeofday
arch/riscv/kernel/vdso/vgettimeofday.c: In function '__vdso_clock_getres':
>> arch/riscv/kernel/vdso/vgettimeofday.c:30:16: error: implicit declaration of function '__cvdso_clock_getres'; did you mean '__vdso_clock_getres'? [-Werror=implicit-function-declaration]
30 | return __cvdso_clock_getres(clock_id, res);
| ^~~~~~~~~~~~~~~~~~~~
| __vdso_clock_getres
cc1: some warnings being treated as errors
--
arch/riscv/kernel/vdso/vgettimeofday.c: In function '__vdso_clock_gettime':
>> arch/riscv/kernel/vdso/vgettimeofday.c:16:16: error: implicit declaration of function '__cvdso_clock_gettime'; did you mean '__vdso_clock_gettime'? [-Werror=implicit-function-declaration]
16 | return __cvdso_clock_gettime(clock, ts);
| ^~~~~~~~~~~~~~~~~~~~~
| __vdso_clock_gettime
arch/riscv/kernel/vdso/vgettimeofday.c: In function '__vdso_gettimeofday':
>> arch/riscv/kernel/vdso/vgettimeofday.c:23:16: error: implicit declaration of function '__cvdso_gettimeofday'; did you mean '__vdso_gettimeofday'? [-Werror=implicit-function-declaration]
23 | return __cvdso_gettimeofday(tv, tz);
| ^~~~~~~~~~~~~~~~~~~~
| __vdso_gettimeofday
arch/riscv/kernel/vdso/vgettimeofday.c: In function '__vdso_clock_getres':
>> arch/riscv/kernel/vdso/vgettimeofday.c:30:16: error: implicit declaration of function '__cvdso_clock_getres'; did you mean '__vdso_clock_getres'? [-Werror=implicit-function-declaration]
30 | return __cvdso_clock_getres(clock_id, res);
| ^~~~~~~~~~~~~~~~~~~~
| __vdso_clock_getres
cc1: some warnings being treated as errors
make[2]: *** [scripts/Makefile.build:271: arch/riscv/kernel/vdso/vgettimeofday.o] Error 1
make[2]: Target 'include/generated/vdso-offsets.h' not remade because of errors.
make[1]: *** [arch/riscv/Makefile:113: vdso_prepare] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [Makefile:220: __sub-make] Error 2
make: Target 'prepare' not remade because of errors.


vim +16 arch/riscv/kernel/vdso/vgettimeofday.c

ad5d1122b82fbd Vincent Chen 2020-06-09 11
e93b327dbf3d37 Vincent Chen 2020-06-23 12 extern
e93b327dbf3d37 Vincent Chen 2020-06-23 13 int __vdso_clock_gettime(clockid_t clock, struct __kernel_timespec *ts);
ad5d1122b82fbd Vincent Chen 2020-06-09 14 int __vdso_clock_gettime(clockid_t clock, struct __kernel_timespec *ts)
ad5d1122b82fbd Vincent Chen 2020-06-09 15 {
ad5d1122b82fbd Vincent Chen 2020-06-09 @16 return __cvdso_clock_gettime(clock, ts);
ad5d1122b82fbd Vincent Chen 2020-06-09 17 }
ad5d1122b82fbd Vincent Chen 2020-06-09 18
e93b327dbf3d37 Vincent Chen 2020-06-23 19 extern
e93b327dbf3d37 Vincent Chen 2020-06-23 20 int __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz);
ad5d1122b82fbd Vincent Chen 2020-06-09 21 int __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz)
ad5d1122b82fbd Vincent Chen 2020-06-09 22 {
ad5d1122b82fbd Vincent Chen 2020-06-09 @23 return __cvdso_gettimeofday(tv, tz);
ad5d1122b82fbd Vincent Chen 2020-06-09 24 }
ad5d1122b82fbd Vincent Chen 2020-06-09 25
e93b327dbf3d37 Vincent Chen 2020-06-23 26 extern
e93b327dbf3d37 Vincent Chen 2020-06-23 27 int __vdso_clock_getres(clockid_t clock_id, struct __kernel_timespec *res);
ad5d1122b82fbd Vincent Chen 2020-06-09 28 int __vdso_clock_getres(clockid_t clock_id, struct __kernel_timespec *res)
ad5d1122b82fbd Vincent Chen 2020-06-09 29 {
ad5d1122b82fbd Vincent Chen 2020-06-09 @30 return __cvdso_clock_getres(clock_id, res);

:::::: The code at line 16 was first introduced by commit
:::::: ad5d1122b82fbd6a816d1b9d26ee01a6dbc2d757 riscv: use vDSO common flow to reduce the latency of the time-related functions

:::::: TO: Vincent Chen <vincent.chen@xxxxxxxxxx>
:::::: CC: Palmer Dabbelt <palmerdabbelt@xxxxxxxxxx>

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

Attachment: .config.gz
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