Re: [PATCH v3 3/5] sched/fair: Switch to task based throttle model
From: kernel test robot
Date: Wed Jul 16 2025 - 11:25:07 EST
Hi Aaron,
kernel test robot noticed the following build warnings:
[auto build test WARNING on tip/sched/core]
[also build test WARNING on next-20250716]
[cannot apply to linus/master v6.16-rc6]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Aaron-Lu/sched-fair-Add-related-data-structure-for-task-based-throttle/20250715-152307
base: tip/sched/core
patch link: https://lore.kernel.org/r/20250715071658.267-4-ziqianlu%40bytedance.com
patch subject: [PATCH v3 3/5] sched/fair: Switch to task based throttle model
config: xtensa-randconfig-r121-20250716 (https://download.01.org/0day-ci/archive/20250716/202507162238.qiw7kyu0-lkp@xxxxxxxxx/config)
compiler: xtensa-linux-gcc (GCC) 8.5.0
reproduce: (https://download.01.org/0day-ci/archive/20250716/202507162238.qiw7kyu0-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202507162238.qiw7kyu0-lkp@xxxxxxxxx/
sparse warnings: (new ones prefixed by >>)
kernel/sched/core.c: note: in included file (through arch/xtensa/include/asm/bitops.h, include/linux/bitops.h, include/linux/thread_info.h, ...):
arch/xtensa/include/asm/processor.h:105:2: sparse: sparse: Unsupported xtensa ABI
arch/xtensa/include/asm/processor.h:135:2: sparse: sparse: Unsupported Xtensa ABI
kernel/sched/core.c: note: in included file:
>> kernel/sched/sched.h:741:44: sparse: sparse: dubious one-bit signed bitfield
kernel/sched/sched.h:742:55: sparse: sparse: dubious one-bit signed bitfield
kernel/sched/sched.h:2252:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2252:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2252:26: sparse: struct task_struct *
kernel/sched/sched.h:2429:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2429:9: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2429:9: sparse: struct task_struct *
kernel/sched/core.c:2131:38: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/core.c:2131:38: sparse: struct task_struct [noderef] __rcu *
kernel/sched/core.c:2131:38: sparse: struct task_struct const *
kernel/sched/sched.h:2252:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2252:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2252:26: sparse: struct task_struct *
kernel/sched/sched.h:2452:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2452:9: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2452:9: sparse: struct task_struct *
kernel/sched/sched.h:2452:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2452:9: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2452:9: sparse: struct task_struct *
kernel/sched/sched.h:2252:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2252:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2252:26: sparse: struct task_struct *
kernel/sched/sched.h:2429:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2429:9: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2429:9: sparse: struct task_struct *
--
kernel/sched/fair.c: note: in included file (through arch/xtensa/include/asm/bitops.h, include/linux/bitops.h, include/linux/kernel.h, ...):
arch/xtensa/include/asm/processor.h:105:2: sparse: sparse: Unsupported xtensa ABI
arch/xtensa/include/asm/processor.h:135:2: sparse: sparse: Unsupported Xtensa ABI
kernel/sched/fair.c: note: in included file:
>> kernel/sched/sched.h:741:44: sparse: sparse: dubious one-bit signed bitfield
kernel/sched/sched.h:742:55: sparse: sparse: dubious one-bit signed bitfield
kernel/sched/fair.c:6073:22: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/fair.c:6073:22: sparse: struct task_struct [noderef] __rcu *
kernel/sched/fair.c:6073:22: sparse: struct task_struct *
kernel/sched/fair.c:10625:22: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/fair.c:10625:22: sparse: struct task_struct [noderef] __rcu *
kernel/sched/fair.c:10625:22: sparse: struct task_struct *
kernel/sched/sched.h:2252:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2252:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2252:26: sparse: struct task_struct *
kernel/sched/sched.h:2452:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2452:9: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2452:9: sparse: struct task_struct *
kernel/sched/sched.h:2252:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2252:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2252:26: sparse: struct task_struct *
kernel/sched/sched.h:2252:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2252:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2252:26: sparse: struct task_struct *
--
kernel/sched/build_policy.c: note: in included file (through arch/xtensa/include/asm/bitops.h, include/linux/bitops.h, include/linux/kernel.h, ...):
arch/xtensa/include/asm/processor.h:105:2: sparse: sparse: Unsupported xtensa ABI
arch/xtensa/include/asm/processor.h:135:2: sparse: sparse: Unsupported Xtensa ABI
kernel/sched/build_policy.c: note: in included file:
>> kernel/sched/sched.h:741:44: sparse: sparse: dubious one-bit signed bitfield
kernel/sched/sched.h:742:55: sparse: sparse: dubious one-bit signed bitfield
kernel/sched/build_policy.c: note: in included file:
kernel/sched/rt.c:2289:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/rt.c:2289:25: sparse: struct task_struct *
kernel/sched/rt.c:2289:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/rt.c:1994:13: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/rt.c:1994:13: sparse: struct task_struct *
kernel/sched/rt.c:1994:13: sparse: struct task_struct [noderef] __rcu *
kernel/sched/build_policy.c: note: in included file:
kernel/sched/deadline.c:2675:13: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/deadline.c:2675:13: sparse: struct task_struct *
kernel/sched/deadline.c:2675:13: sparse: struct task_struct [noderef] __rcu *
kernel/sched/deadline.c:2781:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/deadline.c:2781:25: sparse: struct task_struct *
kernel/sched/deadline.c:2781:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/deadline.c:3024:23: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/deadline.c:3024:23: sparse: struct task_struct [noderef] __rcu *
kernel/sched/deadline.c:3024:23: sparse: struct task_struct *
kernel/sched/build_policy.c: note: in included file:
kernel/sched/syscalls.c:206:22: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/syscalls.c:206:22: sparse: struct task_struct [noderef] __rcu *
kernel/sched/syscalls.c:206:22: sparse: struct task_struct *
kernel/sched/build_policy.c: note: in included file:
kernel/sched/sched.h:2241:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2241:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2241:25: sparse: struct task_struct *
kernel/sched/sched.h:2241:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2241:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2241:25: sparse: struct task_struct *
kernel/sched/sched.h:2252:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2252:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2252:26: sparse: struct task_struct *
kernel/sched/sched.h:2241:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2241:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2241:25: sparse: struct task_struct *
kernel/sched/sched.h:2252:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2252:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2252:26: sparse: struct task_struct *
kernel/sched/sched.h:2241:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2241:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2241:25: sparse: struct task_struct *
kernel/sched/sched.h:2241:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2241:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2241:25: sparse: struct task_struct *
kernel/sched/sched.h:2252:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2252:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2252:26: sparse: struct task_struct *
kernel/sched/sched.h:2252:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2252:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2252:26: sparse: struct task_struct *
kernel/sched/sched.h:2429:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2429:9: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2429:9: sparse: struct task_struct *
kernel/sched/sched.h:2252:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2252:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2252:26: sparse: struct task_struct *
kernel/sched/sched.h:2429:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2429:9: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2429:9: sparse: struct task_struct *
--
kernel/sched/build_utility.c: note: in included file (through arch/xtensa/include/asm/bitops.h, include/linux/bitops.h, include/linux/kernel.h, ...):
arch/xtensa/include/asm/processor.h:105:2: sparse: sparse: Unsupported xtensa ABI
arch/xtensa/include/asm/processor.h:135:2: sparse: sparse: Unsupported Xtensa ABI
kernel/sched/build_utility.c: note: in included file:
>> kernel/sched/sched.h:741:44: sparse: sparse: dubious one-bit signed bitfield
kernel/sched/sched.h:742:55: sparse: sparse: dubious one-bit signed bitfield
kernel/sched/sched.h:2241:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2241:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2241:25: sparse: struct task_struct *
vim +741 kernel/sched/sched.h
709
710 #ifdef CONFIG_FAIR_GROUP_SCHED
711 struct rq *rq; /* CPU runqueue to which this cfs_rq is attached */
712
713 /*
714 * leaf cfs_rqs are those that hold tasks (lowest schedulable entity in
715 * a hierarchy). Non-leaf lrqs hold other higher schedulable entities
716 * (like users, containers etc.)
717 *
718 * leaf_cfs_rq_list ties together list of leaf cfs_rq's in a CPU.
719 * This list is used during load balance.
720 */
721 int on_list;
722 struct list_head leaf_cfs_rq_list;
723 struct task_group *tg; /* group that "owns" this runqueue */
724
725 /* Locally cached copy of our task_group's idle value */
726 int idle;
727
728 #ifdef CONFIG_CFS_BANDWIDTH
729 int runtime_enabled;
730 s64 runtime_remaining;
731
732 u64 throttled_pelt_idle;
733 #ifndef CONFIG_64BIT
734 u64 throttled_pelt_idle_copy;
735 #endif
736 u64 throttled_clock;
737 u64 throttled_clock_pelt;
738 u64 throttled_clock_pelt_time;
739 u64 throttled_clock_self;
740 u64 throttled_clock_self_time;
> 741 int throttled:1;
742 int pelt_clock_throttled:1;
743 int throttle_count;
744 struct list_head throttled_list;
745 struct list_head throttled_csd_list;
746 struct list_head throttled_limbo_list;
747 #endif /* CONFIG_CFS_BANDWIDTH */
748 #endif /* CONFIG_FAIR_GROUP_SCHED */
749 };
750
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https://github.com/intel/lkp-tests/wiki