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Date: Wed, 14 Feb 2024 17:33:56 +0800
From: kernel test robot <lkp@intel.com>
To: Costa Shulyupin <costa.shul@redhat.com>
Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev,
	linux-kernel@vger.kernel.org, x86@kernel.org,
	Thomas Gleixner <tglx@linutronix.de>,
	Waiman Long <longman@redhat.com>,
	Frederic Weisbecker <frederic@kernel.org>
Subject: [tip:timers/core 3/3] kernel/time/hrtimer.c:2224:49: error: implicit
 declaration of function 'housekeeping' is invalid in C99
Message-ID: <202402141742.oYY6J3lC-lkp@intel.com>
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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git timers/core
head:   86342554e102b0d18d50abec43d40f4fc92f1993
commit: 86342554e102b0d18d50abec43d40f4fc92f1993 [3/3] hrtimer: Select housekeeping CPU during migration
config: arm-defconfig (https://download.01.org/0day-ci/archive/20240214/202402141742.oYY6J3lC-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project.git f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240214/202402141742.oYY6J3lC-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202402141742.oYY6J3lC-lkp@intel.com/

All errors (new ones prefixed by >>):

   kernel/time/hrtimer.c:1651:7: warning: variable 'expires_in_hardirq' set but not used [-Wunused-but-set-variable]
           bool expires_in_hardirq;
                ^
>> kernel/time/hrtimer.c:2224:49: error: implicit declaration of function 'housekeeping' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
           int i, ncpu = cpumask_any_and(cpu_active_mask, housekeeping(HK_TYPE_TIMER));
                                                          ^
>> kernel/time/hrtimer.c:2224:62: error: use of undeclared identifier 'HK_TYPE_TIMER'
           int i, ncpu = cpumask_any_and(cpu_active_mask, housekeeping(HK_TYPE_TIMER));
                                                                       ^
   1 warning and 2 errors generated.


vim +/housekeeping +2224 kernel/time/hrtimer.c

  2221	
  2222	int hrtimers_cpu_dying(unsigned int dying_cpu)
  2223	{
> 2224		int i, ncpu = cpumask_any_and(cpu_active_mask, housekeeping(HK_TYPE_TIMER));
  2225		struct hrtimer_cpu_base *old_base, *new_base;
  2226	
  2227		tick_cancel_sched_timer(dying_cpu);
  2228	
  2229		old_base = this_cpu_ptr(&hrtimer_bases);
  2230		new_base = &per_cpu(hrtimer_bases, ncpu);
  2231	
  2232		/*
  2233		 * The caller is globally serialized and nobody else
  2234		 * takes two locks at once, deadlock is not possible.
  2235		 */
  2236		raw_spin_lock(&old_base->lock);
  2237		raw_spin_lock_nested(&new_base->lock, SINGLE_DEPTH_NESTING);
  2238	
  2239		for (i = 0; i < HRTIMER_MAX_CLOCK_BASES; i++) {
  2240			migrate_hrtimer_list(&old_base->clock_base[i],
  2241					     &new_base->clock_base[i]);
  2242		}
  2243	
  2244		/*
  2245		 * The migration might have changed the first expiring softirq
  2246		 * timer on this CPU. Update it.
  2247		 */
  2248		__hrtimer_get_next_event(new_base, HRTIMER_ACTIVE_SOFT);
  2249		/* Tell the other CPU to retrigger the next event */
  2250		smp_call_function_single(ncpu, retrigger_next_event, NULL, 0);
  2251	
  2252		raw_spin_unlock(&new_base->lock);
  2253		raw_spin_unlock(&old_base->lock);
  2254	
  2255		return 0;
  2256	}
  2257	

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