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Message-ID: <202511071431.9PLsHNo5-lkp@intel.com>
Date: Fri, 7 Nov 2025 14:54:22 +0800
From: kernel test robot <lkp@...el.com>
To: Fernand Sieber <sieberf@...zon.com>, mingo@...hat.com,
peterz@...radead.org, juri.lelli@...hat.com,
vincent.guittot@...aro.org, dietmar.eggemann@....com,
rostedt@...dmis.org, bsegall@...gle.com, mgorman@...e.de,
vschneid@...hat.com
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
dwmw@...zon.co.uk, jschoenh@...zon.de, liuyuxua@...zon.com
Subject: Re: [PATCH] sched: Proxy yields to donor tasks
Hi Fernand,
kernel test robot noticed the following build warnings:
[auto build test WARNING on tip/sched/core]
[also build test WARNING on linus/master v6.18-rc4 next-20251107]
[cannot apply to peterz-queue/sched/core]
[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/Fernand-Sieber/sched-Proxy-yields-to-donor-tasks/20251106-184337
base: tip/sched/core
patch link: https://lore.kernel.org/r/20251106104022.195157-1-sieberf%40amazon.com
patch subject: [PATCH] sched: Proxy yields to donor tasks
config: arm64-randconfig-r131-20251107 (https://download.01.org/0day-ci/archive/20251107/202511071431.9PLsHNo5-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 9.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251107/202511071431.9PLsHNo5-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202511071431.9PLsHNo5-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
kernel/sched/fair.c:1167:49: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *running @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/fair.c:1167:49: sparse: expected struct task_struct *running
kernel/sched/fair.c:1167:49: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/fair.c:1201:33: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct sched_entity *se @@ got struct sched_entity [noderef] __rcu * @@
kernel/sched/fair.c:1201:33: sparse: expected struct sched_entity *se
kernel/sched/fair.c:1201:33: sparse: got struct sched_entity [noderef] __rcu *
kernel/sched/fair.c:1259:34: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct sched_entity const *se @@ got struct sched_entity [noderef] __rcu * @@
kernel/sched/fair.c:1259:34: sparse: expected struct sched_entity const *se
kernel/sched/fair.c:1259:34: sparse: got struct sched_entity [noderef] __rcu *
kernel/sched/fair.c:12848:9: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@
kernel/sched/fair.c:12848:9: sparse: expected struct sched_domain *[assigned] sd
kernel/sched/fair.c:12848:9: sparse: got struct sched_domain [noderef] __rcu *parent
kernel/sched/fair.c:7012:58: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/fair.c:7012:58: sparse: expected struct task_struct *p
kernel/sched/fair.c:7012:58: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/fair.c:6072:22: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/fair.c:6072:22: sparse: struct task_struct [noderef] __rcu *
kernel/sched/fair.c:6072:22: sparse: struct task_struct *
kernel/sched/fair.c:8397:20: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@
kernel/sched/fair.c:8397:20: sparse: expected struct sched_domain *[assigned] sd
kernel/sched/fair.c:8397:20: sparse: got struct sched_domain [noderef] __rcu *parent
kernel/sched/fair.c:8601:9: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] tmp @@ got struct sched_domain [noderef] __rcu *parent @@
kernel/sched/fair.c:8601:9: sparse: expected struct sched_domain *[assigned] tmp
kernel/sched/fair.c:8601:9: sparse: got struct sched_domain [noderef] __rcu *parent
kernel/sched/fair.c:8734:39: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *donor @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/fair.c:8734:39: sparse: expected struct task_struct *donor
kernel/sched/fair.c:8734:39: sparse: got struct task_struct [noderef] __rcu *donor
kernel/sched/fair.c:8766:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/fair.c:8766:37: sparse: expected struct task_struct *tsk
kernel/sched/fair.c:8766:37: sparse: got struct task_struct [noderef] __rcu *curr
>> kernel/sched/fair.c:8983:38: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *curr @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/fair.c:8983:38: sparse: expected struct task_struct *curr
kernel/sched/fair.c:8983:38: sparse: got struct task_struct [noderef] __rcu *donor
kernel/sched/fair.c:10020:40: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct sched_domain *child @@ got struct sched_domain [noderef] __rcu *child @@
kernel/sched/fair.c:10020:40: sparse: expected struct sched_domain *child
kernel/sched/fair.c:10020:40: sparse: got struct sched_domain [noderef] __rcu *child
kernel/sched/fair.c:10648:22: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/fair.c:10648:22: sparse: struct task_struct [noderef] __rcu *
kernel/sched/fair.c:10648:22: sparse: struct task_struct *
kernel/sched/fair.c:12093:9: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@
kernel/sched/fair.c:12093:9: sparse: expected struct sched_domain *[assigned] sd
kernel/sched/fair.c:12093:9: sparse: got struct sched_domain [noderef] __rcu *parent
kernel/sched/fair.c:11743:44: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct sched_domain *sd_parent @@ got struct sched_domain [noderef] __rcu *parent @@
kernel/sched/fair.c:11743:44: sparse: expected struct sched_domain *sd_parent
kernel/sched/fair.c:11743:44: sparse: got struct sched_domain [noderef] __rcu *parent
kernel/sched/fair.c:12208:9: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@
kernel/sched/fair.c:12208:9: sparse: expected struct sched_domain *[assigned] sd
kernel/sched/fair.c:12208:9: sparse: got struct sched_domain [noderef] __rcu *parent
kernel/sched/fair.c: note: in included file:
kernel/sched/sched.h:2292:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2292:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2292:26: sparse: struct task_struct *
kernel/sched/sched.h:2625:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2625:9: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2625:9: sparse: struct task_struct *
kernel/sched/sched.h:2292:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2292:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2292:26: sparse: struct task_struct *
kernel/sched/sched.h:2281:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2281:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2281:25: sparse: struct task_struct *
kernel/sched/sched.h:2292:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2292:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2292:26: sparse: struct task_struct *
kernel/sched/sched.h:2292:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2292:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2292:26: sparse: struct task_struct *
kernel/sched/sched.h:2292:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2292:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2292:26: sparse: struct task_struct *
--
kernel/sched/rt.c:976:39: sparse: got struct task_struct [noderef] __rcu *donor
kernel/sched/rt.c:1493:31: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/rt.c:1493:31: sparse: expected struct task_struct *p
kernel/sched/rt.c:1493:31: sparse: got struct task_struct [noderef] __rcu *donor
kernel/sched/rt.c:1809:9: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@
kernel/sched/rt.c:1809:9: sparse: expected struct sched_domain *[assigned] sd
kernel/sched/rt.c:1809:9: sparse: got struct sched_domain [noderef] __rcu *parent
kernel/sched/rt.c:1512:14: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *curr @@ got struct task_struct [noderef] __rcu * @@
kernel/sched/rt.c:1512:14: sparse: expected struct task_struct *curr
kernel/sched/rt.c:1512:14: sparse: got struct task_struct [noderef] __rcu *
kernel/sched/rt.c:1513:15: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *donor @@ got struct task_struct [noderef] __rcu * @@
kernel/sched/rt.c:1513:15: sparse: expected struct task_struct *donor
kernel/sched/rt.c:1513:15: sparse: got struct task_struct [noderef] __rcu *
kernel/sched/rt.c:1574:45: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/rt.c:1574:45: sparse: expected struct task_struct *p
kernel/sched/rt.c:1574:45: sparse: got struct task_struct [noderef] __rcu *donor
kernel/sched/rt.c:1616:39: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *donor @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/rt.c:1616:39: sparse: expected struct task_struct *donor
kernel/sched/rt.c:1616:39: sparse: got struct task_struct [noderef] __rcu *donor
kernel/sched/rt.c:1635:64: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/rt.c:1635:64: sparse: expected struct task_struct *tsk
kernel/sched/rt.c:1635:64: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/rt.c:1976:40: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *task @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/rt.c:1976:40: sparse: expected struct task_struct *task
kernel/sched/rt.c:1976:40: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/rt.c:1999:13: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/rt.c:1999:13: sparse: struct task_struct *
kernel/sched/rt.c:1999:13: sparse: struct task_struct [noderef] __rcu *
kernel/sched/rt.c:2345:54: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/rt.c:2345:54: sparse: expected struct task_struct *tsk
kernel/sched/rt.c:2345:54: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/rt.c:2347:40: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/rt.c:2347:40: sparse: expected struct task_struct *p
kernel/sched/rt.c:2347:40: sparse: got struct task_struct [noderef] __rcu *donor
kernel/sched/rt.c:2347:62: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/rt.c:2347:62: sparse: expected struct task_struct *p
kernel/sched/rt.c:2347:62: sparse: got struct task_struct [noderef] __rcu *donor
kernel/sched/build_policy.c: note: in included file:
kernel/sched/deadline.c:2677:23: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/deadline.c:2677:23: sparse: expected struct task_struct *p
kernel/sched/deadline.c:2677:23: sparse: got struct task_struct [noderef] __rcu *donor
kernel/sched/deadline.c:2687:13: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/deadline.c:2687:13: sparse: struct task_struct *
kernel/sched/deadline.c:2687:13: sparse: struct task_struct [noderef] __rcu *
kernel/sched/deadline.c:2793:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/deadline.c:2793:25: sparse: struct task_struct *
kernel/sched/deadline.c:2793:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/deadline.c:2295:42: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct sched_dl_entity const *b @@ got struct sched_dl_entity [noderef] __rcu * @@
kernel/sched/deadline.c:2295:42: sparse: expected struct sched_dl_entity const *b
kernel/sched/deadline.c:2295:42: sparse: got struct sched_dl_entity [noderef] __rcu *
kernel/sched/deadline.c:2305:38: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/deadline.c:2305:38: sparse: expected struct task_struct *tsk
kernel/sched/deadline.c:2305:38: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/deadline.c:1194:39: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/deadline.c:1194:39: sparse: expected struct task_struct *p
kernel/sched/deadline.c:1194:39: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/deadline.c:1194:85: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct sched_dl_entity const *b @@ got struct sched_dl_entity [noderef] __rcu * @@
kernel/sched/deadline.c:1194:85: sparse: expected struct sched_dl_entity const *b
kernel/sched/deadline.c:1194:85: sparse: got struct sched_dl_entity [noderef] __rcu *
kernel/sched/deadline.c:1292:23: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/deadline.c:1292:23: sparse: expected struct task_struct *p
kernel/sched/deadline.c:1292:23: sparse: got struct task_struct [noderef] __rcu *donor
kernel/sched/deadline.c:1590:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/deadline.c:1590:31: sparse: expected struct task_struct *p
kernel/sched/deadline.c:1590:31: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/deadline.c:1590:70: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct sched_dl_entity const *b @@ got struct sched_dl_entity [noderef] __rcu * @@
kernel/sched/deadline.c:1590:70: sparse: expected struct sched_dl_entity const *b
kernel/sched/deadline.c:1590:70: sparse: got struct sched_dl_entity [noderef] __rcu *
kernel/sched/deadline.c:1703:39: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *donor @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/deadline.c:1703:39: sparse: expected struct task_struct *donor
kernel/sched/deadline.c:1703:39: sparse: got struct task_struct [noderef] __rcu *donor
kernel/sched/deadline.c:2513:9: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@
kernel/sched/deadline.c:2513:9: sparse: expected struct sched_domain *[assigned] sd
kernel/sched/deadline.c:2513:9: sparse: got struct sched_domain [noderef] __rcu *parent
kernel/sched/deadline.c:2181:14: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *curr @@ got struct task_struct [noderef] __rcu * @@
kernel/sched/deadline.c:2181:14: sparse: expected struct task_struct *curr
kernel/sched/deadline.c:2181:14: sparse: got struct task_struct [noderef] __rcu *
kernel/sched/deadline.c:2182:15: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *donor @@ got struct task_struct [noderef] __rcu * @@
kernel/sched/deadline.c:2182:15: sparse: expected struct task_struct *donor
kernel/sched/deadline.c:2182:15: sparse: got struct task_struct [noderef] __rcu *
kernel/sched/deadline.c:2257:43: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/deadline.c:2257:43: sparse: expected struct task_struct *p
kernel/sched/deadline.c:2257:43: sparse: got struct task_struct [noderef] __rcu *donor
kernel/sched/deadline.c:2838:38: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/deadline.c:2838:38: sparse: expected struct task_struct *tsk
kernel/sched/deadline.c:2838:38: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/deadline.c:2840:23: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/deadline.c:2840:23: sparse: expected struct task_struct *p
kernel/sched/deadline.c:2840:23: sparse: got struct task_struct [noderef] __rcu *donor
kernel/sched/deadline.c:2842:44: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct sched_dl_entity const *b @@ got struct sched_dl_entity [noderef] __rcu * @@
kernel/sched/deadline.c:2842:44: sparse: expected struct sched_dl_entity const *b
kernel/sched/deadline.c:2842:44: sparse: got struct sched_dl_entity [noderef] __rcu *
kernel/sched/deadline.c:3036:23: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/deadline.c:3036:23: sparse: struct task_struct [noderef] __rcu *
kernel/sched/deadline.c:3036:23: sparse: struct task_struct *
kernel/sched/deadline.c:3083:32: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/build_policy.c: note: in included file:
kernel/sched/syscalls.c:185:22: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/syscalls.c:185:22: sparse: struct task_struct [noderef] __rcu *
kernel/sched/syscalls.c:185:22: sparse: struct task_struct *
>> kernel/sched/syscalls.c:1397:22: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *curr @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/syscalls.c:1397:22: sparse: expected struct task_struct *curr
kernel/sched/syscalls.c:1397:22: sparse: got struct task_struct [noderef] __rcu *donor
kernel/sched/build_policy.c: note: in included file:
kernel/sched/sched.h:2281:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2281:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2281:25: sparse: struct task_struct *
kernel/sched/sched.h:2281:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2281:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2281:25: sparse: struct task_struct *
kernel/sched/sched.h:2292:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2292:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2292:26: sparse: struct task_struct *
kernel/sched/sched.h:2281:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2281:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2281:25: sparse: struct task_struct *
kernel/sched/sched.h:2292:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2292:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2292:26: sparse: struct task_struct *
kernel/sched/sched.h:2281:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2281:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2281:25: sparse: struct task_struct *
kernel/sched/sched.h:2281:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2281:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2281:25: sparse: struct task_struct *
kernel/sched/sched.h:2292:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2292:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2292:26: sparse: struct task_struct *
kernel/sched/build_policy.c: note: in included file:
kernel/sched/syscalls.c:1257:6: sparse: sparse: context imbalance in 'sched_getaffinity' - wrong count at exit
kernel/sched/syscalls.c:1322:11: sparse: sparse: dereference of noderef expression
kernel/sched/build_policy.c: note: in included file:
kernel/sched/rt.c:1659:15: sparse: sparse: dereference of noderef expression
vim +8983 kernel/sched/fair.c
8977
8978 /*
8979 * sched_yield() is very simple
8980 */
8981 static void yield_task_fair(struct rq *rq)
8982 {
> 8983 struct task_struct *curr = rq->donor;
8984 struct cfs_rq *cfs_rq = task_cfs_rq(curr);
8985 struct sched_entity *se = &curr->se;
8986
8987 /*
8988 * Are we the only task in the tree?
8989 */
8990 if (unlikely(rq->nr_running == 1))
8991 return;
8992
8993 clear_buddies(cfs_rq, se);
8994
8995 update_rq_clock(rq);
8996 /*
8997 * Update run-time statistics of the 'current'.
8998 */
8999 update_curr(cfs_rq);
9000 /*
9001 * Tell update_rq_clock() that we've just updated,
9002 * so we don't do microscopic update in schedule()
9003 * and double the fastpath cost.
9004 */
9005 rq_clock_skip_update(rq);
9006
9007 /*
9008 * Forfeit the remaining vruntime, only if the entity is eligible. This
9009 * condition is necessary because in core scheduling we prefer to run
9010 * ineligible tasks rather than force idling. If this happens we may
9011 * end up in a loop where the core scheduler picks the yielding task,
9012 * which yields immediately again; without the condition the vruntime
9013 * ends up quickly running away.
9014 */
9015 if (entity_eligible(cfs_rq, se)) {
9016 se->vruntime = se->deadline;
9017 se->deadline += calc_delta_fair(se->slice, se);
9018 update_min_vruntime(cfs_rq);
9019 }
9020 }
9021
--
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