* [qais-yousef:sched-setscheduler-hide 6/6] kernel/rcu/tree_nocb.h:1514:25: error: implicit declaration of function 'sched_setscheduler_nocheck'
@ 2023-07-16 4:58 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2023-07-16 4:58 UTC (permalink / raw)
To: Qais Yousef; +Cc: oe-kbuild-all
tree: https://github.com/qais-yousef/linux sched-setscheduler-hide
head: 40f87f6acda90270ee3eb284cbd13a8751ac4e61
commit: 40f87f6acda90270ee3eb284cbd13a8751ac4e61 [6/6] sched: Make sched_set{scheduler, attr}() static
config: csky-randconfig-r025-20230716 (https://download.01.org/0day-ci/archive/20230716/202307161225.U4eGaNAx-lkp@intel.com/config)
compiler: csky-linux-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20230716/202307161225.U4eGaNAx-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/202307161225.U4eGaNAx-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from kernel/rcu/tree.c:5016:
kernel/rcu/tree_nocb.h: In function 'rcu_spawn_cpu_nocb_kthread':
>> kernel/rcu/tree_nocb.h:1514:25: error: implicit declaration of function 'sched_setscheduler_nocheck' [-Werror=implicit-function-declaration]
1514 | sched_setscheduler_nocheck(t, SCHED_FIFO, &sp);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
vim +/sched_setscheduler_nocheck +1514 kernel/rcu/tree_nocb.h
dfcb27540213e8 Frederic Weisbecker 2021-05-19 1481
dfcb27540213e8 Frederic Weisbecker 2021-05-19 1482 /*
dfcb27540213e8 Frederic Weisbecker 2021-05-19 1483 * If the specified CPU is a no-CBs CPU that does not already have its
dfcb27540213e8 Frederic Weisbecker 2021-05-19 1484 * rcuo CB kthread, spawn it. Additionally, if the rcuo GP kthread
dfcb27540213e8 Frederic Weisbecker 2021-05-19 1485 * for this CPU's group has not yet been created, spawn it as well.
dfcb27540213e8 Frederic Weisbecker 2021-05-19 1486 */
10d4703154a72f Frederic Weisbecker 2021-11-23 1487 static void rcu_spawn_cpu_nocb_kthread(int cpu)
dfcb27540213e8 Frederic Weisbecker 2021-05-19 1488 {
dfcb27540213e8 Frederic Weisbecker 2021-05-19 1489 struct rcu_data *rdp = per_cpu_ptr(&rcu_data, cpu);
dfcb27540213e8 Frederic Weisbecker 2021-05-19 1490 struct rcu_data *rdp_gp;
dfcb27540213e8 Frederic Weisbecker 2021-05-19 1491 struct task_struct *t;
54577e23fa0791 Alison Chaiken 2022-01-11 1492 struct sched_param sp;
dfcb27540213e8 Frederic Weisbecker 2021-05-19 1493
8d2aaa9b7c290e Frederic Weisbecker 2022-02-14 1494 if (!rcu_scheduler_fully_active || !rcu_state.nocb_is_setup)
10d4703154a72f Frederic Weisbecker 2021-11-23 1495 return;
10d4703154a72f Frederic Weisbecker 2021-11-23 1496
2cf4528d6dd6f5 Frederic Weisbecker 2021-11-23 1497 /* If there already is an rcuo kthread, then nothing to do. */
2cf4528d6dd6f5 Frederic Weisbecker 2021-11-23 1498 if (rdp->nocb_cb_kthread)
dfcb27540213e8 Frederic Weisbecker 2021-05-19 1499 return;
dfcb27540213e8 Frederic Weisbecker 2021-05-19 1500
dfcb27540213e8 Frederic Weisbecker 2021-05-19 1501 /* If we didn't spawn the GP kthread first, reorganize! */
54577e23fa0791 Alison Chaiken 2022-01-11 1502 sp.sched_priority = kthread_prio;
dfcb27540213e8 Frederic Weisbecker 2021-05-19 1503 rdp_gp = rdp->nocb_gp_rdp;
02e3024175274e Neeraj Upadhyay 2021-12-11 1504 mutex_lock(&rdp_gp->nocb_gp_kthread_mutex);
dfcb27540213e8 Frederic Weisbecker 2021-05-19 1505 if (!rdp_gp->nocb_gp_kthread) {
dfcb27540213e8 Frederic Weisbecker 2021-05-19 1506 t = kthread_run(rcu_nocb_gp_kthread, rdp_gp,
dfcb27540213e8 Frederic Weisbecker 2021-05-19 1507 "rcuog/%d", rdp_gp->cpu);
02e3024175274e Neeraj Upadhyay 2021-12-11 1508 if (WARN_ONCE(IS_ERR(t), "%s: Could not start rcuo GP kthread, OOM is now expected behavior\n", __func__)) {
02e3024175274e Neeraj Upadhyay 2021-12-11 1509 mutex_unlock(&rdp_gp->nocb_gp_kthread_mutex);
3a5761dc025da4 Zqiang 2022-04-19 1510 goto end;
02e3024175274e Neeraj Upadhyay 2021-12-11 1511 }
dfcb27540213e8 Frederic Weisbecker 2021-05-19 1512 WRITE_ONCE(rdp_gp->nocb_gp_kthread, t);
54577e23fa0791 Alison Chaiken 2022-01-11 1513 if (kthread_prio)
54577e23fa0791 Alison Chaiken 2022-01-11 @1514 sched_setscheduler_nocheck(t, SCHED_FIFO, &sp);
dfcb27540213e8 Frederic Weisbecker 2021-05-19 1515 }
02e3024175274e Neeraj Upadhyay 2021-12-11 1516 mutex_unlock(&rdp_gp->nocb_gp_kthread_mutex);
dfcb27540213e8 Frederic Weisbecker 2021-05-19 1517
dfcb27540213e8 Frederic Weisbecker 2021-05-19 1518 /* Spawn the kthread for this CPU. */
dfcb27540213e8 Frederic Weisbecker 2021-05-19 1519 t = kthread_run(rcu_nocb_cb_kthread, rdp,
dfcb27540213e8 Frederic Weisbecker 2021-05-19 1520 "rcuo%c/%d", rcu_state.abbr, cpu);
dfcb27540213e8 Frederic Weisbecker 2021-05-19 1521 if (WARN_ONCE(IS_ERR(t), "%s: Could not start rcuo CB kthread, OOM is now expected behavior\n", __func__))
3a5761dc025da4 Zqiang 2022-04-19 1522 goto end;
c8b16a65267e35 Alison Chaiken 2022-01-11 1523
8f489b4da5278f Uladzislau Rezki (Sony 2022-05-11 1524) if (IS_ENABLED(CONFIG_RCU_NOCB_CPU_CB_BOOST) && kthread_prio)
c8b16a65267e35 Alison Chaiken 2022-01-11 1525 sched_setscheduler_nocheck(t, SCHED_FIFO, &sp);
8f489b4da5278f Uladzislau Rezki (Sony 2022-05-11 1526)
dfcb27540213e8 Frederic Weisbecker 2021-05-19 1527 WRITE_ONCE(rdp->nocb_cb_kthread, t);
dfcb27540213e8 Frederic Weisbecker 2021-05-19 1528 WRITE_ONCE(rdp->nocb_gp_kthread, rdp_gp->nocb_gp_kthread);
3a5761dc025da4 Zqiang 2022-04-19 1529 return;
3a5761dc025da4 Zqiang 2022-04-19 1530 end:
3a5761dc025da4 Zqiang 2022-04-19 1531 mutex_lock(&rcu_state.barrier_mutex);
3a5761dc025da4 Zqiang 2022-04-19 1532 if (rcu_rdp_is_offloaded(rdp)) {
3a5761dc025da4 Zqiang 2022-04-19 1533 rcu_nocb_rdp_deoffload(rdp);
3a5761dc025da4 Zqiang 2022-04-19 1534 cpumask_clear_cpu(cpu, rcu_nocb_mask);
3a5761dc025da4 Zqiang 2022-04-19 1535 }
3a5761dc025da4 Zqiang 2022-04-19 1536 mutex_unlock(&rcu_state.barrier_mutex);
dfcb27540213e8 Frederic Weisbecker 2021-05-19 1537 }
dfcb27540213e8 Frederic Weisbecker 2021-05-19 1538
:::::: The code at line 1514 was first introduced by commit
:::::: 54577e23fa0791599db1a3d86fc8e7a205d3da75 rcu: Make priority of grace-period thread consistent
:::::: TO: Alison Chaiken <achaiken@aurora.tech>
:::::: CC: Paul E. McKenney <paulmck@kernel.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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2023-07-16 4:58 [qais-yousef:sched-setscheduler-hide 6/6] kernel/rcu/tree_nocb.h:1514:25: error: implicit declaration of function 'sched_setscheduler_nocheck' kernel test robot
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