linux-kernel - Re: [PATCH] sched/rt: Remove unnecessary CONFIG_RT_GROUP_SCHED in rt_se

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Message-ID: <201810302302.5Bvf0Uf8%fengguang.wu@intel.com>
Date:   Tue, 30 Oct 2018 23:13:09 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Muchun Song <smuchun@...il.com>
Cc:     kbuild-all@...org, mingo@...nel.org, peterz@...radead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] sched/rt: Remove unnecessary CONFIG_RT_GROUP_SCHED in
 rt_se_prio()

Hi Muchun,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on tip/sched/core]
[also build test ERROR on v4.19 next-20181030]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Muchun-Song/sched-rt-Remove-unnecessary-CONFIG_RT_GROUP_SCHED-in-rt_se_prio/20181030-225925
config: i386-randconfig-x002-201843 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   kernel/sched/rt.c: In function 'rt_se_prio':
>> kernel/sched/rt.c:900:15: error: 'struct rt_rq' has no member named 'highest_prio'
      return rt_rq->highest_prio.curr;
                  ^~

vim +900 kernel/sched/rt.c

ac086bc2 kernel/sched_rt.c Peter Zijlstra  2008-04-19  894  
6f505b16 kernel/sched_rt.c Peter Zijlstra  2008-01-25  895  static inline int rt_se_prio(struct sched_rt_entity *rt_se)
6f505b16 kernel/sched_rt.c Peter Zijlstra  2008-01-25  896  {
6f505b16 kernel/sched_rt.c Peter Zijlstra  2008-01-25  897  	struct rt_rq *rt_rq = group_rt_rq(rt_se);
6f505b16 kernel/sched_rt.c Peter Zijlstra  2008-01-25  898  
6f505b16 kernel/sched_rt.c Peter Zijlstra  2008-01-25  899  	if (rt_rq)
e864c499 kernel/sched_rt.c Gregory Haskins 2008-12-29 @900  		return rt_rq->highest_prio.curr;
6f505b16 kernel/sched_rt.c Peter Zijlstra  2008-01-25  901  
6f505b16 kernel/sched_rt.c Peter Zijlstra  2008-01-25  902  	return rt_task_of(rt_se)->prio;
6f505b16 kernel/sched_rt.c Peter Zijlstra  2008-01-25  903  }
6f505b16 kernel/sched_rt.c Peter Zijlstra  2008-01-25  904  

:::::: The code at line 900 was first introduced by commit
:::::: e864c499d9e57805ae1f9e7ea404dd223759cd53 sched: track the next-highest priority on each runqueue

:::::: TO: Gregory Haskins <ghaskins@...ell.com>
:::::: CC: Gregory Haskins <ghaskins@...ell.com>

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