[ammarfaizi2-block:crng/random/jd/vdso 8/8] arch/riscv/include/asm/vdso/gettimeofday.h:21:31: error: use of undeclared identifier '__NR_gettimeofday'; did you mean 'sys_gettimeofday'?

[kernel test robot <lkp@intel.com>]

tree:   https://github.com/ammarfaizi2/linux-block crng/random/jd/vdso
head:   02d56061c924adece19bdfad05ea4add32de4b63
commit: 02d56061c924adece19bdfad05ea4add32de4b63 [8/8] random: implement getrandom() in vDSO
config: riscv-randconfig-r042-20220729 (https://download.01.org/0day-ci/archive/20220730/202207300051.IoNQt2j6-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 8dfaecc4c24494337933aff9d9166486ca0949f1)
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 riscv cross compiling tool for clang build
        # apt-get install binutils-riscv-linux-gnu
        # https://github.com/ammarfaizi2/linux-block/commit/02d56061c924adece19bdfad05ea4add32de4b63
        git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
        git fetch --no-tags ammarfaizi2-block crng/random/jd/vdso
        git checkout 02d56061c924adece19bdfad05ea4add32de4b63
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang 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@intel.com>

All errors (new ones prefixed by >>):

   In file included from drivers/char/random.c:62:
   In file included from include/vdso/datapage.h:143:
>> arch/riscv/include/asm/vdso/gettimeofday.h:21:31: error: use of undeclared identifier '__NR_gettimeofday'; did you mean 'sys_gettimeofday'?
           register long nr asm("a7") = __NR_gettimeofday;
                                        ^~~~~~~~~~~~~~~~~
                                        sys_gettimeofday
   include/linux/syscalls.h:775:17: note: 'sys_gettimeofday' declared here
   asmlinkage long sys_gettimeofday(struct __kernel_old_timeval __user *tv,
                   ^
   In file included from drivers/char/random.c:62:
   In file included from include/vdso/datapage.h:143:
>> arch/riscv/include/asm/vdso/gettimeofday.h:21:16: error: incompatible pointer to integer conversion initializing 'long' with an expression of type 'long (struct __kernel_old_timeval *, struct timezone *)' [-Wint-conversion]
           register long nr asm("a7") = __NR_gettimeofday;
                         ^              ~~~~~~~~~~~~~~~~~
>> arch/riscv/include/asm/vdso/gettimeofday.h:37:31: error: use of undeclared identifier '__NR_clock_gettime'; did you mean 'sys_clock_gettime'?
           register long nr asm("a7") = __NR_clock_gettime;
                                        ^~~~~~~~~~~~~~~~~~
                                        sys_clock_gettime
   include/linux/syscalls.h:663:17: note: 'sys_clock_gettime' declared here
   asmlinkage long sys_clock_gettime(clockid_t which_clock,
                   ^
   In file included from drivers/char/random.c:62:
   In file included from include/vdso/datapage.h:143:
>> arch/riscv/include/asm/vdso/gettimeofday.h:37:16: error: incompatible pointer to integer conversion initializing 'long' with an expression of type 'long (clockid_t, struct __kernel_timespec *)' (aka 'long (int, struct __kernel_timespec *)') [-Wint-conversion]
           register long nr asm("a7") = __NR_clock_gettime;
                         ^              ~~~~~~~~~~~~~~~~~~
>> arch/riscv/include/asm/vdso/gettimeofday.h:53:31: error: use of undeclared identifier '__NR_clock_getres'; did you mean 'sys_clock_getres'?
           register long nr asm("a7") = __NR_clock_getres;
                                        ^~~~~~~~~~~~~~~~~
                                        sys_clock_getres
   include/linux/syscalls.h:665:17: note: 'sys_clock_getres' declared here
   asmlinkage long sys_clock_getres(clockid_t which_clock,
                   ^
   In file included from drivers/char/random.c:62:
   In file included from include/vdso/datapage.h:143:
   arch/riscv/include/asm/vdso/gettimeofday.h:53:16: error: incompatible pointer to integer conversion initializing 'long' with an expression of type 'long (clockid_t, struct __kernel_timespec *)' (aka 'long (int, struct __kernel_timespec *)') [-Wint-conversion]
           register long nr asm("a7") = __NR_clock_getres;
                         ^              ~~~~~~~~~~~~~~~~~
>> drivers/char/random.c:88:42: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int]
   DEFINE_VVAR_SINGLE(struct vdso_rng_data, _vdso_rng_data);
                                            ^
                                            int
   drivers/char/random.c:88:1: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int]
   DEFINE_VVAR_SINGLE(struct vdso_rng_data, _vdso_rng_data);
   ^
   int
   8 errors generated.


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@sifive.com>
:::::: CC: Palmer Dabbelt <palmerdabbelt@google.com>

-- 
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https://01.org/lkp