linux-kernel - [crng-random:jd/not-zero-entropy 8/12] arch/nios2/include/asm/timex.h:12:63: error: implicit declaration of function 'sched_clock'; did you mean 'sched

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Message-ID: <202204110002.cY2Rt9Sq-lkp@intel.com>
Date:   Mon, 11 Apr 2022 00:35:24 +0800
From:   kernel test robot <lkp@...el.com>
To:     "Jason A. Donenfeld" <zx2c4@...nel.org>
Cc:     kbuild-all@...ts.01.org, zx2c4@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [crng-random:jd/not-zero-entropy 8/12]
 arch/nios2/include/asm/timex.h:12:63: error: implicit declaration of
 function 'sched_clock'; did you mean 'sched_fork'?

tree:   git://git.kernel.org/pub/scm/linux/kernel/git/crng/random.git jd/not-zero-entropy
head:   efec3e2057963ad20223fa50a657b3ca9314ed45
commit: 375f51ba327a3403d8ea14f4292a8ac14c57428e [8/12] nios2: use sched_clock() for random_get_entropy() instead of zero
config: nios2-randconfig-r033-20220410 (https://download.01.org/0day-ci/archive/20220411/202204110002.cY2Rt9Sq-lkp@intel.com/config)
compiler: nios2-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/crng/random.git/commit/?id=375f51ba327a3403d8ea14f4292a8ac14c57428e
        git remote add crng-random git://git.kernel.org/pub/scm/linux/kernel/git/crng/random.git
        git fetch --no-tags crng-random jd/not-zero-entropy
        git checkout 375f51ba327a3403d8ea14f4292a8ac14c57428e
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=nios2 SHELL=/bin/bash drivers/char/

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

All errors (new ones prefixed by >>):

   In file included from include/linux/timex.h:65,
                    from include/linux/time32.h:13,
                    from include/linux/time.h:60,
                    from include/linux/ktime.h:24,
                    from include/linux/timer.h:6,
                    from include/linux/workqueue.h:9,
                    from include/linux/rhashtable-types.h:15,
                    from include/linux/ipc.h:7,
                    from include/uapi/linux/sem.h:5,
                    from include/linux/sem.h:5,
                    from include/linux/sched.h:15,
                    from include/linux/utsname.h:6,
                    from drivers/char/random.c:30:
   drivers/char/random.c: In function 'extract_entropy':
>> arch/nios2/include/asm/timex.h:12:63: error: implicit declaration of function 'sched_clock'; did you mean 'sched_fork'? [-Werror=implicit-function-declaration]
      12 | #define random_get_entropy() ((unsigned long)(get_cycles() ?: sched_clock()))
         |                                                               ^~~~~~~~~~~
   drivers/char/random.c:847:43: note: in expansion of macro 'random_get_entropy'
     847 |                         block.rdseed[i] = random_get_entropy();
         |                                           ^~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors


vim +12 arch/nios2/include/asm/timex.h

    11	
  > 12	#define random_get_entropy() ((unsigned long)(get_cycles() ?: sched_clock()))
    13	

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