[ammarfaizi2-block:crng/random/jd/vdso 8/8] arch/riscv/include/asm/vdso/gettimeofday.h:21:38: error: '__NR_gettimeofday' undeclared; did you mean 'sys_gettimeofday'?
From: kernel test robot
Date: Fri Jul 29 2022 - 23:44:46 EST
tree: https://github.com/ammarfaizi2/linux-block crng/random/jd/vdso
head: 65b88fc7d65669b6a7f4225aa00acf18b82a7682
commit: 65b88fc7d65669b6a7f4225aa00acf18b82a7682 [8/8] random: implement getrandom() in vDSO
config: riscv-randconfig-r033-20220729 (https://download.01.org/0day-ci/archive/20220730/202207301141.7UdnHjAc-lkp@xxxxxxxxx/config)
compiler: riscv32-linux-gcc (GCC) 12.1.0
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://github.com/ammarfaizi2/linux-block/commit/65b88fc7d65669b6a7f4225aa00acf18b82a7682
git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
git fetch --no-tags ammarfaizi2-block crng/random/jd/vdso
git checkout 65b88fc7d65669b6a7f4225aa00acf18b82a7682
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash drivers/char/
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>
All errors (new ones prefixed by >>):
In file included from include/vdso/datapage.h:143,
from drivers/char/random.c:62:
arch/riscv/include/asm/vdso/gettimeofday.h: In function 'gettimeofday_fallback':
>> arch/riscv/include/asm/vdso/gettimeofday.h:21:38: error: '__NR_gettimeofday' undeclared (first use in this function); did you mean 'sys_gettimeofday'?
21 | register long nr asm("a7") = __NR_gettimeofday;
| ^~~~~~~~~~~~~~~~~
| sys_gettimeofday
arch/riscv/include/asm/vdso/gettimeofday.h:21:38: note: each undeclared identifier is reported only once for each function it appears in
arch/riscv/include/asm/vdso/gettimeofday.h: In function 'clock_gettime_fallback':
>> arch/riscv/include/asm/vdso/gettimeofday.h:37:38: error: '__NR_clock_gettime' undeclared (first use in this function); did you mean 'sys_clock_gettime'?
37 | register long nr asm("a7") = __NR_clock_gettime;
| ^~~~~~~~~~~~~~~~~~
| sys_clock_gettime
arch/riscv/include/asm/vdso/gettimeofday.h: In function 'clock_getres_fallback':
>> arch/riscv/include/asm/vdso/gettimeofday.h:53:38: error: '__NR_clock_getres' undeclared (first use in this function); did you mean 'sys_clock_getres'?
53 | register long nr asm("a7") = __NR_clock_getres;
| ^~~~~~~~~~~~~~~~~
| sys_clock_getres
drivers/char/random.c: At top level:
drivers/char/random.c:88:42: error: expected declaration specifiers or '...' before '_vdso_rng_data'
88 | DEFINE_VVAR_SINGLE(struct vdso_rng_data, _vdso_rng_data);
| ^~~~~~~~~~~~~~
vim +21 arch/riscv/include/asm/vdso/gettimeofday.h
ad5d1122b82fbd Vincent Chen 2020-06-09 13
ad5d1122b82fbd Vincent Chen 2020-06-09 14 static __always_inline
ad5d1122b82fbd Vincent Chen 2020-06-09 15 int gettimeofday_fallback(struct __kernel_old_timeval *_tv,
ad5d1122b82fbd Vincent Chen 2020-06-09 16 struct timezone *_tz)
ad5d1122b82fbd Vincent Chen 2020-06-09 17 {
ad5d1122b82fbd Vincent Chen 2020-06-09 18 register struct __kernel_old_timeval *tv asm("a0") = _tv;
ad5d1122b82fbd Vincent Chen 2020-06-09 19 register struct timezone *tz asm("a1") = _tz;
ad5d1122b82fbd Vincent Chen 2020-06-09 20 register long ret asm("a0");
ad5d1122b82fbd Vincent Chen 2020-06-09 @21 register long nr asm("a7") = __NR_gettimeofday;
ad5d1122b82fbd Vincent Chen 2020-06-09 22
ad5d1122b82fbd Vincent Chen 2020-06-09 23 asm volatile ("ecall\n"
ad5d1122b82fbd Vincent Chen 2020-06-09 24 : "=r" (ret)
ad5d1122b82fbd Vincent Chen 2020-06-09 25 : "r"(tv), "r"(tz), "r"(nr)
ad5d1122b82fbd Vincent Chen 2020-06-09 26 : "memory");
ad5d1122b82fbd Vincent Chen 2020-06-09 27
ad5d1122b82fbd Vincent Chen 2020-06-09 28 return ret;
ad5d1122b82fbd Vincent Chen 2020-06-09 29 }
ad5d1122b82fbd Vincent Chen 2020-06-09 30
ad5d1122b82fbd Vincent Chen 2020-06-09 31 static __always_inline
ad5d1122b82fbd Vincent Chen 2020-06-09 32 long clock_gettime_fallback(clockid_t _clkid, struct __kernel_timespec *_ts)
ad5d1122b82fbd Vincent Chen 2020-06-09 33 {
ad5d1122b82fbd Vincent Chen 2020-06-09 34 register clockid_t clkid asm("a0") = _clkid;
ad5d1122b82fbd Vincent Chen 2020-06-09 35 register struct __kernel_timespec *ts asm("a1") = _ts;
ad5d1122b82fbd Vincent Chen 2020-06-09 36 register long ret asm("a0");
ad5d1122b82fbd Vincent Chen 2020-06-09 @37 register long nr asm("a7") = __NR_clock_gettime;
ad5d1122b82fbd Vincent Chen 2020-06-09 38
ad5d1122b82fbd Vincent Chen 2020-06-09 39 asm volatile ("ecall\n"
ad5d1122b82fbd Vincent Chen 2020-06-09 40 : "=r" (ret)
ad5d1122b82fbd Vincent Chen 2020-06-09 41 : "r"(clkid), "r"(ts), "r"(nr)
ad5d1122b82fbd Vincent Chen 2020-06-09 42 : "memory");
ad5d1122b82fbd Vincent Chen 2020-06-09 43
ad5d1122b82fbd Vincent Chen 2020-06-09 44 return ret;
ad5d1122b82fbd Vincent Chen 2020-06-09 45 }
ad5d1122b82fbd Vincent Chen 2020-06-09 46
ad5d1122b82fbd Vincent Chen 2020-06-09 47 static __always_inline
ad5d1122b82fbd Vincent Chen 2020-06-09 48 int clock_getres_fallback(clockid_t _clkid, struct __kernel_timespec *_ts)
ad5d1122b82fbd Vincent Chen 2020-06-09 49 {
ad5d1122b82fbd Vincent Chen 2020-06-09 50 register clockid_t clkid asm("a0") = _clkid;
ad5d1122b82fbd Vincent Chen 2020-06-09 51 register struct __kernel_timespec *ts asm("a1") = _ts;
ad5d1122b82fbd Vincent Chen 2020-06-09 52 register long ret asm("a0");
ad5d1122b82fbd Vincent Chen 2020-06-09 @53 register long nr asm("a7") = __NR_clock_getres;
ad5d1122b82fbd Vincent Chen 2020-06-09 54
ad5d1122b82fbd Vincent Chen 2020-06-09 55 asm volatile ("ecall\n"
ad5d1122b82fbd Vincent Chen 2020-06-09 56 : "=r" (ret)
ad5d1122b82fbd Vincent Chen 2020-06-09 57 : "r"(clkid), "r"(ts), "r"(nr)
ad5d1122b82fbd Vincent Chen 2020-06-09 58 : "memory");
ad5d1122b82fbd Vincent Chen 2020-06-09 59
ad5d1122b82fbd Vincent Chen 2020-06-09 60 return ret;
ad5d1122b82fbd Vincent Chen 2020-06-09 61 }
ad5d1122b82fbd Vincent Chen 2020-06-09 62
:::::: The code at line 21 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>
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