Re: [PATCH v2 2/5] futex2: Implement vectorized wait

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

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Hi "André,

I love your patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on next-20210903]
[cannot apply to tip/locking/core asm-generic/master tip/x86/asm v5.14]
[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/Andr-Almeida/futex2-Add-wait-on-multiple-futexes-syscall/20210905-071424
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 49624efa65ac9889f4e7c7b2452b2e6ce42ba37d
config: riscv-randconfig-r004-20210905 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 6fe2beba7d2a41964af658c8c59dd172683ef739)
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-riscv64-linux-gnu
        # https://github.com/0day-ci/linux/commit/9bd5ae4e55f30178347d0bc62e16ce0f009e78e0
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Andr-Almeida/futex2-Add-wait-on-multiple-futexes-syscall/20210905-071424
        git checkout 9bd5ae4e55f30178347d0bc62e16ce0f009e78e0
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross O=build_dir ARCH=riscv SHELL=/bin/bash arch/riscv/kernel/ kernel/time/

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

All error/warnings (new ones prefixed by >>):

   In file included from arch/riscv/kernel/setup.c:22:
   In file included from include/linux/crash_dump.h:5:
   In file included from include/linux/kexec.h:25:
>> include/linux/compat.h:691:40: warning: declaration of 'struct futex_waitv' will not be visible outside of this function [-Wvisibility]
   asmlinkage long sys_futex_waitv(struct futex_waitv *waiters,
                                          ^
   1 warning generated.
--
   In file included from arch/riscv/kernel/syscall_table.c:18:
   In file included from arch/riscv/include/asm/unistd.h:14:
   In file included from arch/riscv/include/uapi/asm/unistd.h:24:
>> include/uapi/asm-generic/unistd.h:884:29: error: use of undeclared identifier 'sys_futex_waitv'
   __SC_COMP(__NR_futex_waitv, sys_futex_waitv, compat_sys_futex_waitv)
                               ^
   1 error generated.
--
   In file included from kernel/time/timer.c:45:
>> include/linux/compat.h:691:40: warning: declaration of 'struct futex_waitv' will not be visible outside of this function [-Wvisibility]
   asmlinkage long sys_futex_waitv(struct futex_waitv *waiters,
                                          ^
   kernel/time/timer.c:1312:20: warning: unused function 'del_timer_wait_running' [-Wunused-function]
   static inline void del_timer_wait_running(struct timer_list *timer) { }
                      ^
   2 warnings generated.
--
   In file included from kernel/time/hrtimer.c:43:
>> include/linux/compat.h:691:40: warning: declaration of 'struct futex_waitv' will not be visible outside of this function [-Wvisibility]
   asmlinkage long sys_futex_waitv(struct futex_waitv *waiters,
                                          ^
   kernel/time/hrtimer.c:120:21: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
           [CLOCK_REALTIME]        = HRTIMER_BASE_REALTIME,
                                     ^~~~~~~~~~~~~~~~~~~~~
   kernel/time/hrtimer.c:118:27: note: previous initialization is here
           [0 ... MAX_CLOCKS - 1]  = HRTIMER_MAX_CLOCK_BASES,
                                     ^~~~~~~~~~~~~~~~~~~~~~~
   kernel/time/hrtimer.c:121:22: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
           [CLOCK_MONOTONIC]       = HRTIMER_BASE_MONOTONIC,
                                     ^~~~~~~~~~~~~~~~~~~~~~
   kernel/time/hrtimer.c:118:27: note: previous initialization is here
           [0 ... MAX_CLOCKS - 1]  = HRTIMER_MAX_CLOCK_BASES,
                                     ^~~~~~~~~~~~~~~~~~~~~~~
   kernel/time/hrtimer.c:122:21: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
           [CLOCK_BOOTTIME]        = HRTIMER_BASE_BOOTTIME,
                                     ^~~~~~~~~~~~~~~~~~~~~
   kernel/time/hrtimer.c:118:27: note: previous initialization is here
           [0 ... MAX_CLOCKS - 1]  = HRTIMER_MAX_CLOCK_BASES,
                                     ^~~~~~~~~~~~~~~~~~~~~~~
   kernel/time/hrtimer.c:123:17: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
           [CLOCK_TAI]             = HRTIMER_BASE_TAI,
                                     ^~~~~~~~~~~~~~~~
   kernel/time/hrtimer.c:118:27: note: previous initialization is here
           [0 ... MAX_CLOCKS - 1]  = HRTIMER_MAX_CLOCK_BASES,
                                     ^~~~~~~~~~~~~~~~~~~~~~~
   kernel/time/hrtimer.c:276:20: warning: unused function 'is_migration_base' [-Wunused-function]
   static inline bool is_migration_base(struct hrtimer_clock_base *base)
                      ^
   kernel/time/hrtimer.c:650:19: warning: unused function 'hrtimer_hres_active' [-Wunused-function]
   static inline int hrtimer_hres_active(void)
                     ^
   kernel/time/hrtimer.c:1887:20: warning: unused function '__hrtimer_peek_ahead_timers' [-Wunused-function]
   static inline void __hrtimer_peek_ahead_timers(void) { }
                      ^
   8 warnings generated.


vim +/sys_futex_waitv +884 include/uapi/asm-generic/unistd.h

   882	
   883	#define __NR_futex_waitv 449
 > 884	__SC_COMP(__NR_futex_waitv, sys_futex_waitv, compat_sys_futex_waitv)
   885	

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

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