kernel/sched/pelt.h:102:13: sparse: sparse: incorrect type in argument 1 (different address spaces)
From: kernel test robot
Date: Thu Jul 23 2026 - 04:08:12 EST
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 4539944e515183668109bdf4d0c3d7d228383d88
commit: cac5cefbade90ff0bb0b393d301fa3b5234cf056 sched/smp: Make SMP unconditional
date: 1 year, 1 month ago
config: openrisc-randconfig-r113-20260723 (https://download.01.org/0day-ci/archive/20260723/202607231504.Y8MSRiKf-lkp@xxxxxxxxx/config)
compiler: or1k-linux-gcc (GCC) 12.5.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260723/202607231504.Y8MSRiKf-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
| Fixes: cac5cefbade9 ("sched/smp: Make SMP unconditional")
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202607231504.Y8MSRiKf-lkp@xxxxxxxxx/
sparse warnings: (new ones prefixed by >>)
kernel/sched/core.c:1091:38: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *curr @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/core.c:1091:38: sparse: expected struct task_struct *curr
kernel/sched/core.c:1091:38: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/core.c:2190:39: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *donor @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/core.c:2190:39: sparse: expected struct task_struct *donor
kernel/sched/core.c:2190:39: sparse: got struct task_struct [noderef] __rcu *donor
kernel/sched/core.c:2201:65: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/core.c:2201:65: sparse: expected struct task_struct *tsk
kernel/sched/core.c:2201:65: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/core.c:3677:17: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@
kernel/sched/core.c:3677:17: sparse: expected struct sched_domain *[assigned] sd
kernel/sched/core.c:3677:17: sparse: got struct sched_domain [noderef] __rcu *parent
kernel/sched/core.c:3882:36: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct const *p @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/core.c:3882:36: sparse: expected struct task_struct const *p
kernel/sched/core.c:3882:36: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/core.c:5612:15: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *donor @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/core.c:5612:15: sparse: expected struct task_struct *donor
kernel/sched/core.c:5612:15: sparse: got struct task_struct [noderef] __rcu *donor
kernel/sched/core.c:6626:14: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *prev @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/core.c:6626:14: sparse: expected struct task_struct *prev
kernel/sched/core.c:6626:14: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/core.c:7175:17: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/core.c:7175:17: sparse: struct task_struct *
kernel/sched/core.c:7175:17: sparse: struct task_struct [noderef] __rcu *
kernel/sched/core.c:10092:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/core.c:10092:25: sparse: expected struct task_struct *p
kernel/sched/core.c:10092:25: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/core.c:599:6: sparse: sparse: context imbalance in 'raw_spin_rq_lock_nested' - wrong count at exit
kernel/sched/core.c:632:23: sparse: sparse: context imbalance in 'raw_spin_rq_trylock' - wrong count at exit
kernel/sched/core.c:648:6: sparse: sparse: context imbalance in 'raw_spin_rq_unlock' - unexpected unlock
kernel/sched/core.c:684:36: sparse: sparse: context imbalance in '__task_rq_lock' - wrong count at exit
kernel/sched/core.c:725:36: sparse: sparse: context imbalance in 'task_rq_lock' - wrong count at exit
kernel/sched/core.c: note: in included file:
>> kernel/sched/pelt.h:102:13: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct const *p @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/pelt.h:102:13: sparse: expected struct task_struct const *p
kernel/sched/pelt.h:102:13: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/core.c: note: in included file:
kernel/sched/sched.h:2239:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2239:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2239:25: sparse: struct task_struct *
kernel/sched/sched.h:2239:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2239:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2239:25: sparse: struct task_struct *
kernel/sched/sched.h:2250:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2250:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2250:26: sparse: struct task_struct *
kernel/sched/sched.h:2437:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2437:9: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2437:9: sparse: struct task_struct *
kernel/sched/sched.h:2239:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2239:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2239:25: sparse: struct task_struct *
kernel/sched/core.c:2154:38: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/core.c:2154:38: sparse: struct task_struct [noderef] __rcu *
kernel/sched/core.c:2154:38: sparse: struct task_struct const *
kernel/sched/sched.h:2239:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2239:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2239:25: sparse: struct task_struct *
kernel/sched/sched.h:2250:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2250:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2250:26: sparse: struct task_struct *
kernel/sched/sched.h:2460:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2460:9: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2460:9: sparse: struct task_struct *
kernel/sched/sched.h:2460:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2460:9: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2460:9: sparse: struct task_struct *
kernel/sched/sched.h:2250:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2250:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2250:26: sparse: struct task_struct *
kernel/sched/sched.h:2437:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2437:9: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2437:9: sparse: struct task_struct *
kernel/sched/sched.h:2250:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2250:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2250:26: sparse: struct task_struct *
kernel/sched/sched.h:2437:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2437:9: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2437:9: sparse: struct task_struct *
vim +102 kernel/sched/pelt.h
e2f3e35f1f5a4dc Vincent Donnefort 2022-06-21 87
23127296889fe84 Vincent Guittot 2019-01-23 88 /*
23127296889fe84 Vincent Guittot 2019-01-23 89 * The clock_pelt scales the time to reflect the effective amount of
23127296889fe84 Vincent Guittot 2019-01-23 90 * computation done during the running delta time but then sync back to
23127296889fe84 Vincent Guittot 2019-01-23 91 * clock_task when rq is idle.
23127296889fe84 Vincent Guittot 2019-01-23 92 *
23127296889fe84 Vincent Guittot 2019-01-23 93 *
23127296889fe84 Vincent Guittot 2019-01-23 94 * absolute time | 1| 2| 3| 4| 5| 6| 7| 8| 9|10|11|12|13|14|15|16
23127296889fe84 Vincent Guittot 2019-01-23 95 * @ max capacity ------******---------------******---------------
23127296889fe84 Vincent Guittot 2019-01-23 96 * @ half capacity ------************---------************---------
23127296889fe84 Vincent Guittot 2019-01-23 97 * clock pelt | 1| 2| 3| 4| 7| 8| 9| 10| 11|14|15|16
23127296889fe84 Vincent Guittot 2019-01-23 98 *
23127296889fe84 Vincent Guittot 2019-01-23 99 */
23127296889fe84 Vincent Guittot 2019-01-23 100 static inline void update_rq_clock_pelt(struct rq *rq, s64 delta)
23127296889fe84 Vincent Guittot 2019-01-23 101 {
23127296889fe84 Vincent Guittot 2019-01-23 @102 if (unlikely(is_idle_task(rq->curr))) {
e2f3e35f1f5a4dc Vincent Donnefort 2022-06-21 103 _update_idle_rq_clock_pelt(rq);
23127296889fe84 Vincent Guittot 2019-01-23 104 return;
23127296889fe84 Vincent Guittot 2019-01-23 105 }
23127296889fe84 Vincent Guittot 2019-01-23 106
23127296889fe84 Vincent Guittot 2019-01-23 107 /*
23127296889fe84 Vincent Guittot 2019-01-23 108 * When a rq runs at a lower compute capacity, it will need
23127296889fe84 Vincent Guittot 2019-01-23 109 * more time to do the same amount of work than at max
23127296889fe84 Vincent Guittot 2019-01-23 110 * capacity. In order to be invariant, we scale the delta to
23127296889fe84 Vincent Guittot 2019-01-23 111 * reflect how much work has been really done.
23127296889fe84 Vincent Guittot 2019-01-23 112 * Running longer results in stealing idle time that will
23127296889fe84 Vincent Guittot 2019-01-23 113 * disturb the load signal compared to max capacity. This
23127296889fe84 Vincent Guittot 2019-01-23 114 * stolen idle time will be automatically reflected when the
23127296889fe84 Vincent Guittot 2019-01-23 115 * rq will be idle and the clock will be synced with
23127296889fe84 Vincent Guittot 2019-01-23 116 * rq_clock_task.
23127296889fe84 Vincent Guittot 2019-01-23 117 */
23127296889fe84 Vincent Guittot 2019-01-23 118
23127296889fe84 Vincent Guittot 2019-01-23 119 /*
23127296889fe84 Vincent Guittot 2019-01-23 120 * Scale the elapsed time to reflect the real amount of
23127296889fe84 Vincent Guittot 2019-01-23 121 * computation
23127296889fe84 Vincent Guittot 2019-01-23 122 */
8ec59c0f5f4966f Vincent Guittot 2019-06-17 123 delta = cap_scale(delta, arch_scale_cpu_capacity(cpu_of(rq)));
23127296889fe84 Vincent Guittot 2019-01-23 124 delta = cap_scale(delta, arch_scale_freq_capacity(cpu_of(rq)));
23127296889fe84 Vincent Guittot 2019-01-23 125
23127296889fe84 Vincent Guittot 2019-01-23 126 rq->clock_pelt += delta;
23127296889fe84 Vincent Guittot 2019-01-23 127 }
23127296889fe84 Vincent Guittot 2019-01-23 128
:::::: The code at line 102 was first introduced by commit
:::::: 23127296889fe84b0762b191b5d041e8ba6f2599 sched/fair: Update scale invariance of PELT
:::::: TO: Vincent Guittot <vincent.guittot@xxxxxxxxxx>
:::::: CC: Ingo Molnar <mingo@xxxxxxxxxx>
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