[thomas-weissschuh:b4/auxclock-nanosleep 32/52] kernel/time/hrtimer.c:599:13: error: call to undeclared function 'hrtimer_time_to_monotonic'; ISO C99 and later do not support implicit function declarations

[kernel test robot <lkp@intel.com>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/thomas.weissschuh/linux.git b4/auxclock-nanosleep
head:   bca5a81b57571c48bb81e7225cb1e4248f98b346
commit: 7a200ad6980105f50270ca602d25d2960bfd63f6 [32/52] helper
config: arm-allnoconfig (https://download.01.org/0day-ci/archive/20260609/202606091353.TwHVKGhK-lkp@intel.com/config)
compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 7917772d7d61384696c61102c08c2ea158e610fa)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260609/202606091353.TwHVKGhK-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/202606091353.TwHVKGhK-lkp@intel.com/

All errors (new ones prefixed by >>):

>> kernel/time/hrtimer.c:599:13: error: call to undeclared function 'hrtimer_time_to_monotonic'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     599 |                 expires = hrtimer_time_to_monotonic(base, base->expires_next);
         |                           ^
   kernel/time/hrtimer.c:871:12: error: call to undeclared function 'hrtimer_time_to_monotonic'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     871 |         expires = hrtimer_time_to_monotonic(base, expires);
         |                   ^
   kernel/time/hrtimer.c:965:13: error: call to undeclared function 'hrtimer_time_to_monotonic'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     965 |                 expires = hrtimer_time_to_monotonic(base, next->expires);
         |                           ^
   kernel/time/hrtimer.c:1550:12: error: call to undeclared function 'hrtimer_time_to_monotonic'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
    1550 |         expires = hrtimer_time_to_monotonic(timer->base, expires);
         |                   ^
   4 errors generated.


vim +/hrtimer_time_to_monotonic +599 kernel/time/hrtimer.c

   590	
   591	/* Find the base with the earliest expiry */
   592	static void hrtimer_bases_first(struct hrtimer_cpu_base *cpu_base,unsigned int active,
   593					ktime_t *expires_next, struct hrtimer **next_timer)
   594	{
   595		struct hrtimer_clock_base *base;
   596		ktime_t expires;
   597	
   598		for_each_active_base(base, cpu_base, active) {
 > 599			expires = hrtimer_time_to_monotonic(base, base->expires_next);
   600			if (expires < *expires_next) {
   601				*expires_next = expires;
   602				*next_timer = clock_base_next_timer(base);
   603			}
   604		}
   605	}
   606	

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