linux-kernel - [tip:WIP.timers/core 49/68] include/linux/sched/types.h:16:2: error: unknown type name 'u64'

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Date:   Tue, 20 Aug 2019 05:09:22 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org, tipbuild@...or.com
Subject: [tip:WIP.timers/core 49/68] include/linux/sched/types.h:16:2: error:
 unknown type name 'u64'

tree:   https://kernel.googlesource.com/pub/scm/linux/kernel/git/tip/tip.git WIP.timers/core
head:   b16101077c4444bc7e0dde91e7ffb258ce1f979b
commit: 83083078874a3b1b29b8171714455b469a17b8ab [49/68] sched: Move struct task_cputime to types.h
config: sparc64-allmodconfig (attached as .config)
compiler: sparc64-linux-gcc (GCC) 7.4.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 83083078874a3b1b29b8171714455b469a17b8ab
        # save the attached .config to linux build tree
        GCC_VERSION=7.4.0 make.cross ARCH=sparc64 

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

All errors (new ones prefixed by >>):

   In file included from <command-line>:0:0:
>> include/linux/sched/types.h:16:2: error: unknown type name 'u64'
     u64    utime;
     ^~~
   include/linux/sched/types.h:17:2: error: unknown type name 'u64'
     u64    stime;
     ^~~

vim +/u64 +16 include/linux/sched/types.h

     4	
     5	/**
     6	 * struct task_cputime - collected CPU time counts
     7	 * @utime:		time spent in user mode, in nanoseconds
     8	 * @stime:		time spent in kernel mode, in nanoseconds
     9	 * @sum_exec_runtime:	total time spent on the CPU, in nanoseconds
    10	 *
    11	 * This structure groups together three kinds of CPU time that are tracked for
    12	 * threads and thread groups.  Most things considering CPU time want to group
    13	 * these counts together and treat all three of them in parallel.
    14	 */
    15	struct task_cputime {
  > 16		u64				utime;
    17		u64				stime;
    18		unsigned long long		sum_exec_runtime;
    19	};
    20	

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