[paulmckrcu:dev.2026.03.24a 22/31] kernel/rcu/hazptrtorture.c:508:7: error: implicit declaration of function 'torture_sched_setaffinity'; did you mean 'torture_sched_set_normal'?

tree:   https://github.com/paulmckrcu/linux dev.2026.03.24a
head:   8600e98cae614a9336f54a79ea5c152b14369076
commit: 16ad40d1089c5f212d7d87babc2376284f3bf244 [22/31] fixup! torture: Add a hazptrtorture.c stress test
config: sparc64-randconfig-002-20260811 (https://download.01.org/0day-ci/archive/20260811/[email protected]/config)
compiler: sparc64-linux-gcc (GCC) 8.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260811/[email protected]/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 <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

Note: the paulmckrcu/dev.2026.03.24a HEAD 8600e98cae614a9336f54a79ea5c152b14369076 builds fine.
      It only hurts bisectability.

All errors (new ones prefixed by >>):

   kernel/rcu/hazptrtorture.c: In function 'hazptr_torture_preempt':
>> kernel/rcu/hazptrtorture.c:508:7: error: implicit declaration of function 'torture_sched_setaffinity'; did you mean 'torture_sched_set_normal'? [-Werror=implicit-function-declaration]
      if (torture_sched_setaffinity(current->pid, cpumask_of(cpu), false))
          ^~~~~~~~~~~~~~~~~~~~~~~~~
          torture_sched_set_normal
   cc1: some warnings being treated as errors


vim +508 kernel/rcu/hazptrtorture.c

26cca1d546bd55 Paul E. McKenney 2026-03-24  491  
26cca1d546bd55 Paul E. McKenney 2026-03-24  492  // Randomly preempt online CPUs.
26cca1d546bd55 Paul E. McKenney 2026-03-24  493  static int hazptr_torture_preempt(void *unused)
26cca1d546bd55 Paul E. McKenney 2026-03-24  494  {
26cca1d546bd55 Paul E. McKenney 2026-03-24  495  	int cpu = -1;
26cca1d546bd55 Paul E. McKenney 2026-03-24  496  	DEFINE_TORTURE_RANDOM(rand);
26cca1d546bd55 Paul E. McKenney 2026-03-24  497  
26cca1d546bd55 Paul E. McKenney 2026-03-24  498  	schedule_timeout_idle(onoff_holdoff * HZ);
26cca1d546bd55 Paul E. McKenney 2026-03-24  499  	do {
26cca1d546bd55 Paul E. McKenney 2026-03-24  500  		// Wait for preempt_interval ms with up to 100us fuzz.
26cca1d546bd55 Paul E. McKenney 2026-03-24  501  		torture_hrtimeout_ms(preempt_interval, 100, &rand);
26cca1d546bd55 Paul E. McKenney 2026-03-24  502  		// Select online CPU.
26cca1d546bd55 Paul E. McKenney 2026-03-24  503  		cpu = cpumask_next(cpu, cpu_online_mask);
26cca1d546bd55 Paul E. McKenney 2026-03-24  504  		if (cpu >= nr_cpu_ids)
26cca1d546bd55 Paul E. McKenney 2026-03-24  505  			cpu = cpumask_next(-1, cpu_online_mask);
26cca1d546bd55 Paul E. McKenney 2026-03-24  506  		WARN_ON_ONCE(cpu >= nr_cpu_ids);
26cca1d546bd55 Paul E. McKenney 2026-03-24  507  		// Move to that CPU, if can't do so, retry later.
26cca1d546bd55 Paul E. McKenney 2026-03-24 @508  		if (torture_sched_setaffinity(current->pid, cpumask_of(cpu), false))
26cca1d546bd55 Paul E. McKenney 2026-03-24  509  			continue;
26cca1d546bd55 Paul E. McKenney 2026-03-24  510  		// Preempt at high-ish priority, then reset to normal.
26cca1d546bd55 Paul E. McKenney 2026-03-24  511  		sched_set_fifo(current);
26cca1d546bd55 Paul E. McKenney 2026-03-24  512  		torture_sched_setaffinity(current->pid, cpu_present_mask, true);
26cca1d546bd55 Paul E. McKenney 2026-03-24  513  		mdelay(preempt_duration);
26cca1d546bd55 Paul E. McKenney 2026-03-24  514  		sched_set_normal(current, 0);
26cca1d546bd55 Paul E. McKenney 2026-03-24  515  		stutter_wait("hazptr_torture_preempt");
26cca1d546bd55 Paul E. McKenney 2026-03-24  516  	} while (!torture_must_stop());
26cca1d546bd55 Paul E. McKenney 2026-03-24  517  	torture_kthread_stopping("hazptr_torture_preempt");
26cca1d546bd55 Paul E. McKenney 2026-03-24  518  	return 0;
26cca1d546bd55 Paul E. McKenney 2026-03-24  519  }
26cca1d546bd55 Paul E. McKenney 2026-03-24  520  

:::::: The code at line 508 was first introduced by commit
:::::: 26cca1d546bd557fdda0d8d6000dfcb80da759ab torture: Add a hazptrtorture.c stress test

:::::: TO: Paul E. McKenney <[email protected]>
:::::: CC: Paul E. McKenney <[email protected]>

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