linux-kernel - [ammarfaizi2-block:stable/linux-stable-rc/queue/5.10 5/6] include/linux/wait_bit.h:74:14: error: implicit declaration of function 'test_bit_acquire'; did you mean 'test_bit

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Date:   Thu, 6 Oct 2022 04:48:51 +0800
From:   kernel test robot <lkp@...el.com>
To:     Mikulas Patocka <mpatocka@...hat.com>
Cc:     kbuild-all@...ts.01.org, Ammar Faizi <ammarfaizi2@...weeb.org>,
        GNU/Weeb Mailing List <gwml@...r.gnuweeb.org>,
        linux-kernel@...r.kernel.org, Sasha Levin <sashal@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [ammarfaizi2-block:stable/linux-stable-rc/queue/5.10 5/6]
 include/linux/wait_bit.h:74:14: error: implicit declaration of function
 'test_bit_acquire'; did you mean 'test_bit_le'?

tree:   https://github.com/ammarfaizi2/linux-block stable/linux-stable-rc/queue/5.10
head:   9bee85062966b2892dabbfaead0c3cd35e23d1c5
commit: 140402d6d4e43ab3896e3092fbca88ce64eba3b1 [5/6] wait_on_bit: add an acquire memory barrier
config: arc-allyesconfig
compiler: arceb-elf-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/140402d6d4e43ab3896e3092fbca88ce64eba3b1
        git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
        git fetch --no-tags ammarfaizi2-block stable/linux-stable-rc/queue/5.10
        git checkout 140402d6d4e43ab3896e3092fbca88ce64eba3b1
        # 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=arc prepare

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

   In file included from include/linux/fs.h:6,
                    from include/linux/huge_mm.h:8,
                    from include/linux/mm.h:687,
                    from arch/arc/kernel/asm-offsets.c:7:
   include/linux/wait_bit.h: In function 'wait_on_bit':
>> include/linux/wait_bit.h:74:14: error: implicit declaration of function 'test_bit_acquire'; did you mean 'test_bit_le'? [-Werror=implicit-function-declaration]
      74 |         if (!test_bit_acquire(bit, word))
         |              ^~~~~~~~~~~~~~~~
         |              test_bit_le
   cc1: some warnings being treated as errors
   make[2]: *** [scripts/Makefile.build:117: arch/arc/kernel/asm-offsets.s] Error 1
   make[2]: Target '__build' not remade because of errors.
   make[1]: *** [Makefile:1225: prepare0] Error 2
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [Makefile:185: __sub-make] Error 2
   make: Target 'prepare' not remade because of errors.


vim +74 include/linux/wait_bit.h

    53	
    54	/**
    55	 * wait_on_bit - wait for a bit to be cleared
    56	 * @word: the word being waited on, a kernel virtual address
    57	 * @bit: the bit of the word being waited on
    58	 * @mode: the task state to sleep in
    59	 *
    60	 * There is a standard hashed waitqueue table for generic use. This
    61	 * is the part of the hashtable's accessor API that waits on a bit.
    62	 * For instance, if one were to have waiters on a bitflag, one would
    63	 * call wait_on_bit() in threads waiting for the bit to clear.
    64	 * One uses wait_on_bit() where one is waiting for the bit to clear,
    65	 * but has no intention of setting it.
    66	 * Returned value will be zero if the bit was cleared, or non-zero
    67	 * if the process received a signal and the mode permitted wakeup
    68	 * on that signal.
    69	 */
    70	static inline int
    71	wait_on_bit(unsigned long *word, int bit, unsigned mode)
    72	{
    73		might_sleep();
  > 74		if (!test_bit_acquire(bit, word))
    75			return 0;
    76		return out_of_line_wait_on_bit(word, bit,
    77					       bit_wait,
    78					       mode);
    79	}
    80	

-- 
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