From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 07AA91876 for ; Sun, 16 Jul 2023 04:58:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1689483499; x=1721019499; h=date:from:to:cc:subject:message-id:mime-version; bh=u61T4lLe154yGIGcqnO4Sd9cmws5wqoW0p/+rMGJg/U=; b=U6Ej0odZuFZvF/x5eMt9yaNR97cpeD7y4qTayMIqx1krqdvb3sdkOyt/ lWLkuri7CnDBf5+yrf41dygb4EDIIGaC24Mdj7T48saxdYQpL8fkls9l7 dMKJ4NXYkpusMauQhSm0IMrLpEdH5ZZCcKhesNrqgDaeytCokNlvWOUBF ECij4MV5Au5TzORx+SS6WSWPJyomSmkE3NBGuyRIXs+ho0DUMZi58VeJs EzKEVM+BGVSmwIpo27RkA+5Uzlowyx0p7qDhiu1D8Rf5vkO7KZJODav90 XnlTYr/PpUM0C5/wokucyUsrz3O+KSO0a8gOSwb1kCIwxeTkkyt4XUyqT w==; X-IronPort-AV: E=McAfee;i="6600,9927,10772"; a="368371599" X-IronPort-AV: E=Sophos;i="6.01,209,1684825200"; d="scan'208";a="368371599" Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Jul 2023 21:58:16 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10772"; a="722832799" X-IronPort-AV: E=Sophos;i="6.01,209,1684825200"; d="scan'208";a="722832799" Received: from lkp-server01.sh.intel.com (HELO c544d7fc5005) ([10.239.97.150]) by orsmga002.jf.intel.com with ESMTP; 15 Jul 2023 21:58:15 -0700 Received: from kbuild by c544d7fc5005 with local (Exim 4.96) (envelope-from ) id 1qKtpm-0008b7-1e; Sun, 16 Jul 2023 04:58:14 +0000 Date: Sun, 16 Jul 2023 12:58:03 +0800 From: kernel test robot To: Qais Yousef Cc: oe-kbuild-all@lists.linux.dev Subject: [qais-yousef:sched-setscheduler-hide 6/6] kernel/rcu/tree_nocb.h:1514:25: error: implicit declaration of function 'sched_setscheduler_nocheck' Message-ID: <202307161225.U4eGaNAx-lkp@intel.com> Precedence: bulk X-Mailing-List: oe-kbuild-all@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline 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 | 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 :::::: CC: Paul E. McKenney -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki