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SubjectRe: [PATCH] schedule: SCHED_RR: Give a fresh time-slice to the task after after it suspends or relinquishes
Hi "zhaoxiu.zeng",

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on tip/sched/core]
[also build test WARNING on v5.16-rc6 next-20211222]
[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]

url: https://github.com/0day-ci/linux/commits/zhaoxiu-zeng/schedule-SCHED_RR-Give-a-fresh-time-slice-to-the-task-after-after-it-suspends-or-relinquishes/20211222-171838
base: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 82762d2af31a60081162890983a83499c9c7dd74
config: i386-randconfig-s001-20211222 (https://download.01.org/0day-ci/archive/20211223/202112230234.B6uAyy2x-lkp@intel.com/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce:
# apt-get install sparse
# sparse version: v0.6.4-dirty
# https://github.com/0day-ci/linux/commit/7e5fd85c65d2efc13de4adaa5ebc522894f3d60c
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review zhaoxiu-zeng/schedule-SCHED_RR-Give-a-fresh-time-slice-to-the-task-after-after-it-suspends-or-relinquishes/20211222-171838
git checkout 7e5fd85c65d2efc13de4adaa5ebc522894f3d60c
# save the config file to linux build tree
mkdir build_dir
make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash kernel/sched/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>


sparse warnings: (new ones prefixed by >>)
kernel/sched/rt.c:924:70: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/rt.c:924:70: sparse: struct task_struct [noderef] __rcu *
kernel/sched/rt.c:924:70: sparse: struct task_struct *
kernel/sched/rt.c:1010:38: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *curr @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/rt.c:1010:38: sparse: expected struct task_struct *curr
kernel/sched/rt.c:1010:38: sparse: got struct task_struct [noderef] __rcu *curr
>> kernel/sched/rt.c:1560:35: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/rt.c:1560:35: sparse: expected struct task_struct *p
kernel/sched/rt.c:1560:35: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/rt.c: note: in included file:
kernel/sched/sched.h:2032:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2032:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2032:25: sparse: struct task_struct *
kernel/sched/sched.h:2032:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2032:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2032:25: sparse: struct task_struct *
kernel/sched/sched.h:2032:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2032:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2032:25: sparse: struct task_struct *

vim +1560 kernel/sched/rt.c

1557
1558 static void yield_task_rt(struct rq *rq)
1559 {
> 1560 struct task_struct *p = rq->curr;
1561
1562 if (p->policy == SCHED_RR)
1563 p->rt.time_slice = sched_rr_timeslice;
1564
1565 requeue_task_rt(rq, p, 0);
1566 }
1567

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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