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Date:   Fri, 23 Jul 2021 03:19:52 +0800
From:   kernel test robot <>
To:     Carlos Bilbao <>, Thomas Gleixner <>
Cc:, Arnd Bergmann <>,
        Linux Kernel Mailing List <>,
        Linus Walleij <>,
        Geert Uytterhoeven <>,,
        Matthew Wilcox <>,,,
Subject: Re: [PATCH v3] include: linux: Reorganize timekeeping and ktime

Hi Carlos,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on tip/timers/core]
[also build test WARNING on kvmarm/next abelloni/rtc-next sound/for-next soc/for-next linus/master tip/x86/core v5.14-rc2 next-20210722]
[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]

base: 2d0a9eb23ccfdf11308bec6db0bc007585d919d2
config: ia64-buildonly-randconfig-r004-20210722 (attached as .config)
compiler: ia64-linux-gcc (GCC) 10.3.0
reproduce (this is a W=1 build):
        wget -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git remote add linux-review
        git fetch --no-tags linux-review Carlos-Bilbao/include-linux-Reorganize-timekeeping-and-ktime-headers/20210722-233301
        git checkout e35011219261f218feeaea55c97d4d583d9747a9
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross ARCH=ia64 

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

All warnings (new ones prefixed by >>):

   arch/ia64/kernel/time.c: In function 'timer_interrupt':
   arch/ia64/kernel/time.c:190:3: error: implicit declaration of function 'legacy_timer_tick' [-Werror=implicit-function-declaration]
     190 |   legacy_timer_tick(smp_processor_id() == time_keeper_id);
         |   ^~~~~~~~~~~~~~~~~
   arch/ia64/kernel/time.c: At top level:
   arch/ia64/kernel/time.c:259:6: warning: no previous prototype for 'ia64_init_itm' [-Wmissing-prototypes]
     259 | void ia64_init_itm(void)
         |      ^~~~~~~~~~~~~
>> arch/ia64/kernel/time.c:390:6: warning: no previous prototype for 'read_persistent_clock64' [-Wmissing-prototypes]
     390 | void read_persistent_clock64(struct timespec64 *ts)
         |      ^~~~~~~~~~~~~~~~~~~~~~~
   arch/ia64/kernel/time.c:396:1: warning: no previous prototype for 'time_init' [-Wmissing-prototypes]
     396 | time_init (void)
         | ^~~~~~~~~
   cc1: some warnings being treated as errors
>> kernel/time/tick-legacy.c:25:6: warning: no previous prototype for 'legacy_timer_tick' [-Wmissing-prototypes]
      25 | void legacy_timer_tick(unsigned long ticks)
         |      ^~~~~~~~~~~~~~~~~

vim +/legacy_timer_tick +25 kernel/time/tick-legacy.c

b3550164a19d62 Arnd Bergmann 2020-09-24  12  
56cc7b8acfb7c7 Arnd Bergmann 2020-09-24  13  /**
56cc7b8acfb7c7 Arnd Bergmann 2020-09-24  14   * legacy_timer_tick() - advances the timekeeping infrastructure
56cc7b8acfb7c7 Arnd Bergmann 2020-09-24  15   * @ticks:	number of ticks, that have elapsed since the last call.
56cc7b8acfb7c7 Arnd Bergmann 2020-09-24  16   *
56cc7b8acfb7c7 Arnd Bergmann 2020-09-24  17   * This is used by platforms that have not been converted to
56cc7b8acfb7c7 Arnd Bergmann 2020-09-24  18   * generic clockevents.
56cc7b8acfb7c7 Arnd Bergmann 2020-09-24  19   *
56cc7b8acfb7c7 Arnd Bergmann 2020-09-24  20   * If 'ticks' is zero, the CPU is not handling timekeeping, so
56cc7b8acfb7c7 Arnd Bergmann 2020-09-24  21   * only perform process accounting and profiling.
56cc7b8acfb7c7 Arnd Bergmann 2020-09-24  22   *
56cc7b8acfb7c7 Arnd Bergmann 2020-09-24  23   * Must be called with interrupts disabled.
56cc7b8acfb7c7 Arnd Bergmann 2020-09-24  24   */
b3550164a19d62 Arnd Bergmann 2020-09-24 @25  void legacy_timer_tick(unsigned long ticks)

0-DAY CI Kernel Test Service, Intel Corporation

Download attachment ".config.gz" of type "application/gzip" (34975 bytes)

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