[thomas-weissschuh:b4/auxclock-nanosleep 79/96] kernel/time/hrtimer.c:2247:undefined reference to `HRTIMER_BASE_AUX0'

[thomas-weissschuh:b4/auxclock-nanosleep 79/96] kernel/time/hrtimer.c:2247:undefined reference to `HRTIMER_BASE_AUX0'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/thomas.weissschuh/linux.git b4/auxclock-nanosleep
head:   aae9c6fcfe1b60e4a63da0fe64f8ffe470b0fa29
commit: 69bfefa1c9bf52492df144e6ad0daf86f82a3727 [79/96] DELETEME
config: x86_64-rhel-9.4-bpf (https://download.01.org/0day-ci/archive/20260715/202607152003.P1bFkNGl-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260715/202607152003.P1bFkNGl-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/202607152003.P1bFkNGl-lkp@intel.com/

All errors (new ones prefixed by >>):

   ld: vmlinux.o: in function `hrtimers_disable_clock':
>> kernel/time/hrtimer.c:2247:(.text+0x30fb3a): undefined reference to `HRTIMER_BASE_AUX0'
>> ld: kernel/time/hrtimer.c:2247:(.text+0x30fb4c): undefined reference to `HRTIMER_BASE_AUX0'


vim +2247 kernel/time/hrtimer.c

21d6d52a1b7028 Thomas Gleixner  2015-04-14  2241  
10fa80a2a4c8ad Thomas Weißschuh 2026-07-15  2242  #ifdef CONFIG_HRTIMER_ABORT
10fa80a2a4c8ad Thomas Weißschuh 2026-07-15  2243  void hrtimers_disable_clock(clockid_t clock)
10fa80a2a4c8ad Thomas Weißschuh 2026-07-15  2244  {
10fa80a2a4c8ad Thomas Weißschuh 2026-07-15  2245  	lockdep_assert(clockid_aux_valid(clock));
10fa80a2a4c8ad Thomas Weißschuh 2026-07-15  2246  
10fa80a2a4c8ad Thomas Weißschuh 2026-07-15 @2247  	unsigned int base_index = BIT(HRTIMER_BASE_AUX0 + clock - CLOCK_AUX);
10fa80a2a4c8ad Thomas Weißschuh 2026-07-15  2248  	unsigned int base_index_soft = base_index << HRTIMER_BASE_MONOTONIC_SOFT;
10fa80a2a4c8ad Thomas Weißschuh 2026-07-15  2249  	unsigned long flags;
10fa80a2a4c8ad Thomas Weißschuh 2026-07-15  2250  	int cpu;
10fa80a2a4c8ad Thomas Weißschuh 2026-07-15  2251  
10fa80a2a4c8ad Thomas Weißschuh 2026-07-15  2252  	guard(cpus_read_lock)();
10fa80a2a4c8ad Thomas Weißschuh 2026-07-15  2253  
10fa80a2a4c8ad Thomas Weißschuh 2026-07-15  2254  	for_each_online_cpu(cpu) {
10fa80a2a4c8ad Thomas Weißschuh 2026-07-15  2255  		struct hrtimer_cpu_base *cpu_base = &per_cpu(hrtimer_bases, cpu);
10fa80a2a4c8ad Thomas Weißschuh 2026-07-15  2256  		ktime_t now;
10fa80a2a4c8ad Thomas Weißschuh 2026-07-15  2257  
10fa80a2a4c8ad Thomas Weißschuh 2026-07-15  2258  		raw_spin_lock_irqsave(&cpu_base->lock, flags);
10fa80a2a4c8ad Thomas Weißschuh 2026-07-15  2259  		now = hrtimer_update_base(cpu_base);
10fa80a2a4c8ad Thomas Weißschuh 2026-07-15  2260  		__hrtimer_run_queues(cpu_base, now, flags, base_index | base_index_soft);
10fa80a2a4c8ad Thomas Weißschuh 2026-07-15  2261  		raw_spin_unlock_irqrestore(&cpu_base->lock, flags);
10fa80a2a4c8ad Thomas Weißschuh 2026-07-15  2262  	}
10fa80a2a4c8ad Thomas Weißschuh 2026-07-15  2263  }
10fa80a2a4c8ad Thomas Weißschuh 2026-07-15  2264  #endif
10fa80a2a4c8ad Thomas Weißschuh 2026-07-15  2265  

:::::: The code at line 2247 was first introduced by commit
:::::: 10fa80a2a4c8adf160a971f21e99fb6525581374 CONFIG_HRTIMER_ABORT

:::::: TO: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
:::::: CC: Thomas Weißschuh <thomas.weissschuh@linutronix.de>

--
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https://github.com/intel/lkp-tests/wiki