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Date:   Wed, 6 Dec 2023 14:29:38 +0800
From:   kernel test robot <lkp@intel.com>
To:     Yajun Deng <yajun.deng@linux.dev>, mingo@redhat.com,
        peterz@infradead.org, juri.lelli@redhat.com,
        vincent.guittot@linaro.org, dietmar.eggemann@arm.com,
        rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de,
        bristot@redhat.com, vschneid@redhat.com
Cc:     llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev,
        linux-kernel@vger.kernel.org, Yajun Deng <yajun.deng@linux.dev>
Subject: Re: [PATCH 2/2] sched/rt: Return NULL when rt entity isn't a task in
 rt_task_of()
Message-ID: <202312061449.VhDizEfx-lkp@intel.com>
References: <20231201022704.3526377-3-yajun.deng@linux.dev>
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In-Reply-To: <20231201022704.3526377-3-yajun.deng@linux.dev>
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Hi Yajun,

kernel test robot noticed the following build errors:

[auto build test ERROR on tip/sched/core]
[also build test ERROR on next-20231206]
[cannot apply to linus/master v6.7-rc4]
[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/Yajun-Deng/sched-fair-Return-NULL-when-entity-isn-t-a-task-in-task_of/20231201-103036
base:   tip/sched/core
patch link:    https://lore.kernel.org/r/20231201022704.3526377-3-yajun.deng%40linux.dev
patch subject: [PATCH 2/2] sched/rt: Return NULL when rt entity isn't a task in rt_task_of()
config: arm-ixp4xx_defconfig (https://download.01.org/0day-ci/archive/20231206/202312061449.VhDizEfx-lkp@intel.com/config)
compiler: clang version 15.0.7 (https://github.com/llvm/llvm-project.git 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231206/202312061449.VhDizEfx-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202312061449.VhDizEfx-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from kernel/sched/build_policy.c:45:
>> kernel/sched/rt.c:947:17: error: no member named 'highest_prio' in 'struct rt_rq'
                   return rt_rq->highest_prio.curr;
                          ~~~~~  ^
   1 error generated.


vim +947 kernel/sched/rt.c

ac086bc22997a2b kernel/sched_rt.c Peter Zijlstra  2008-04-19  941  
6f505b16425a512 kernel/sched_rt.c Peter Zijlstra  2008-01-25  942  static inline int rt_se_prio(struct sched_rt_entity *rt_se)
6f505b16425a512 kernel/sched_rt.c Peter Zijlstra  2008-01-25  943  {
6f505b16425a512 kernel/sched_rt.c Peter Zijlstra  2008-01-25  944  	struct rt_rq *rt_rq = group_rt_rq(rt_se);
6f505b16425a512 kernel/sched_rt.c Peter Zijlstra  2008-01-25  945  
6f505b16425a512 kernel/sched_rt.c Peter Zijlstra  2008-01-25  946  	if (rt_rq)
e864c499d9e5780 kernel/sched_rt.c Gregory Haskins 2008-12-29 @947  		return rt_rq->highest_prio.curr;
6f505b16425a512 kernel/sched_rt.c Peter Zijlstra  2008-01-25  948  
6f505b16425a512 kernel/sched_rt.c Peter Zijlstra  2008-01-25  949  	return rt_task_of(rt_se)->prio;
6f505b16425a512 kernel/sched_rt.c Peter Zijlstra  2008-01-25  950  }
6f505b16425a512 kernel/sched_rt.c Peter Zijlstra  2008-01-25  951  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki