[qais-yousef:uclamp-max-aggregation 2/2] kernel/sched/cpufreq_schedutil.c:285:10: error: call to undeclared function 'uclamp_util_with'; ISO C99 and later do not support implicit function declarations

[qais-yousef:uclamp-max-aggregation 2/2] kernel/sched/cpufreq_schedutil.c:285:10: error: call to undeclared function 'uclamp_util_with'; ISO C99 and later do not support implicit function declarations

[kernel test robot]

tree:   https://github.com/qais-yousef/linux uclamp-max-aggregation
head:   1c5e789f50e8f3bce19ec226e1971186ab7d35c6
commit: 1c5e789f50e8f3bce19ec226e1971186ab7d35c6 [2/2] sched/uclamp: Remove rq max aggregation
config: i386-buildonly-randconfig-004-20230903 (https://download.01.org/0day-ci/archive/20230903/202309031224.6sucWvg7-lkp@intel.com/config)
compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230903/202309031224.6sucWvg7-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/202309031224.6sucWvg7-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from kernel/sched/build_utility.c:69:
>> kernel/sched/cpufreq_schedutil.c:285:10: error: call to undeclared function 'uclamp_util_with'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
           boost = uclamp_util_with(boost, cpu_rq(sg_cpu->cpu)->curr);
                   ^
   kernel/sched/cpufreq_schedutil.c:285:10: note: did you mean 'uclamp_rq_util_with'?
   kernel/sched/sched.h:3029:15: note: 'uclamp_rq_util_with' declared here
   unsigned long uclamp_rq_util_with(struct rq *rq, unsigned long util,
                 ^
   1 error generated.


vim +/uclamp_util_with +285 kernel/sched/cpufreq_schedutil.c

   235	
   236	/**
   237	 * sugov_iowait_apply() - Apply the IO boost to a CPU.
   238	 * @sg_cpu: the sugov data for the cpu to boost
   239	 * @time: the update time from the caller
   240	 * @max_cap: the max CPU capacity
   241	 *
   242	 * A CPU running a task which woken up after an IO operation can have its
   243	 * utilization boosted to speed up the completion of those IO operations.
   244	 * The IO boost value is increased each time a task wakes up from IO, in
   245	 * sugov_iowait_apply(), and it's instead decreased by this function,
   246	 * each time an increase has not been requested (!iowait_boost_pending).
   247	 *
   248	 * A CPU which also appears to have been idle for at least one tick has also
   249	 * its IO boost utilization reset.
   250	 *
   251	 * This mechanism is designed to boost high frequently IO waiting tasks, while
   252	 * being more conservative on tasks which does sporadic IO operations.
   253	 */
   254	static void sugov_iowait_apply(struct sugov_cpu *sg_cpu, u64 time,
   255				       unsigned long max_cap)
   256	{
   257		unsigned long boost;
   258	
   259		/* No boost currently required */
   260		if (!sg_cpu->iowait_boost)
   261			return;
   262	
   263		/* Reset boost if the CPU appears to have been idle enough */
   264		if (sugov_iowait_reset(sg_cpu, time, false))
   265			return;
   266	
   267		if (!sg_cpu->iowait_boost_pending) {
   268			/*
   269			 * No boost pending; reduce the boost value.
   270			 */
   271			sg_cpu->iowait_boost >>= 1;
   272			if (sg_cpu->iowait_boost < IOWAIT_BOOST_MIN) {
   273				sg_cpu->iowait_boost = 0;
   274				return;
   275			}
   276		}
   277	
   278		sg_cpu->iowait_boost_pending = false;
   279	
   280		/*
   281		 * sg_cpu->util is already in capacity scale; convert iowait_boost
   282		 * into the same scale so we can compare.
   283		 */
   284		boost = (sg_cpu->iowait_boost * max_cap) >> SCHED_CAPACITY_SHIFT;
 > 285		boost = uclamp_util_with(boost, cpu_rq(sg_cpu->cpu)->curr);
   286		if (sg_cpu->util < boost)
   287			sg_cpu->util = boost;
   288	}
   289	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki