[qais-yousef:uclamp-max-aggregation 13/13] kernel/sched/core.c:4904:7: error: call to undeclared function '__ignore_task_perf'; ISO C99 and later do not support implicit function declarations

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

tree:   https://github.com/qais-yousef/linux uclamp-max-aggregation
head:   a29c26f9317cede0f3141904d910d3125f8a82ea
commit: a29c26f9317cede0f3141904d910d3125f8a82ea [13/13] sched: Make iowait boost per task
config: i386-buildonly-randconfig-004-20240122 (https://download.01.org/0day-ci/archive/20240122/202401220601.YvBaICmR-lkp@intel.com/config)
compiler: ClangBuiltLinux clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240122/202401220601.YvBaICmR-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/202401220601.YvBaICmR-lkp@intel.com/

All errors (new ones prefixed by >>):

>> kernel/sched/core.c:4904:7: error: call to undeclared function '__ignore_task_perf'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
    4904 |                 if (__ignore_task_perf(current))
         |                     ^
>> kernel/sched/core.c:4908:16: error: call to undeclared function '__uclamp_eff_value'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
    4908 |                 uclamp_min = __uclamp_eff_value(current, UCLAMP_MIN);
         |                              ^
   kernel/sched/core.c:4908:16: note: did you mean 'uclamp_eff_value'?
   kernel/sched/sched.h:3071:29: note: 'uclamp_eff_value' declared here
    3071 | static inline unsigned long uclamp_eff_value(struct task_struct *p,
         |                             ^
   2 errors generated.


vim +/__ignore_task_perf +4904 kernel/sched/core.c

  4877	
  4878	static inline void update_cpufreq_ctx_switch(struct rq *rq)
  4879	{
  4880		if (unlikely(current->sched_class == &stop_sched_class))
  4881			return;
  4882	
  4883		if (unlikely(current->sched_class == &idle_sched_class))
  4884			return;
  4885	
  4886		if (unlikely(task_has_idle_policy(current)))
  4887			return;
  4888	
  4889		if (likely(fair_policy(current->policy))) {
  4890			unsigned long uclamp_min, uclamp_max;
  4891			unsigned long rq_util;
  4892	
  4893			/*
  4894			 * Allow cpufreq updates once for every update_load_avg() decay.
  4895			 */
  4896			if (rq->cfs.decayed) {
  4897				rq->cfs.decayed = false;
  4898				goto force_update;
  4899			}
  4900	
  4901			if (current->in_iowait)
  4902				goto force_update;
  4903	
> 4904			if (__ignore_task_perf(current))
  4905				return;
  4906	
  4907			/* Force an update if perf hints are required to be applied */
> 4908			uclamp_min = __uclamp_eff_value(current, UCLAMP_MIN);
  4909			uclamp_max = __uclamp_eff_value(current, UCLAMP_MAX);
  4910			rq_util = rq->cfs.avg.util_avg;
  4911	
  4912			if (uclamp_min > rq_util || uclamp_max < rq_util)
  4913				goto force_update;
  4914	
  4915			return;
  4916		}
  4917	
  4918		/* RT and DL should always send a freq update */
  4919	
  4920		/* XXX ignore updates for sugov worker thread */
  4921	
  4922	force_update:
  4923	
  4924		/*
  4925		 * Request freq update after __balance_callbacks to take into account
  4926		 * any changes to rq.
  4927		 */
  4928		cpufreq_update_util(rq, 0);
  4929	}
  4930	

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