linux-kernel - Re: [PATCH 1/2] sched: make fair sched class can handle the cgroup change by other class

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Message-ID: <201510051739.oGuI2Sw7%fengguang.wu@intel.com>
Date:	Mon, 5 Oct 2015 17:37:55 +0800
From:	kbuild test robot <lkp@...el.com>
To:	byungchul.park@....com
Cc:	kbuild-all@...org, mingo@...nel.org, peterz@...radead.org,
	linux-kernel@...r.kernel.org, yuyang.du@...el.com, pjt@...gle.com,
	efault@....de, tglx@...utronix.de,
	Byungchul Park <byungchul.park@....com>
Subject: Re: [PATCH 1/2] sched: make fair sched class can handle the cgroup
 change by other class

Hi Byungchul,

[auto build test ERROR on next-20151002 -- if it's inappropriate base, please ignore]

config: i386-randconfig-x009-201540 (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   kernel/sched/fair.c: In function 'task_move_group_from_fair':
>> kernel/sched/fair.c:8094:3: error: implicit declaration of function '__update_load_avg' [-Werror=implicit-function-declaration]
      __update_load_avg(cfs_rq->avg.last_update_time, task_cpu(p),
      ^
>> kernel/sched/fair.c:8094:27: error: 'struct cfs_rq' has no member named 'avg'
      __update_load_avg(cfs_rq->avg.last_update_time, task_cpu(p),
                              ^
>> kernel/sched/fair.c:8095:10: error: 'struct sched_entity' has no member named 'avg'
          &se->avg, 0, 0, NULL);
             ^
   kernel/sched/fair.c: In function 'task_move_group_to_fair':
   kernel/sched/fair.c:8119:5: error: 'struct sched_entity' has no member named 'avg'
      se->avg.last_update_time = cfs_rq->avg.last_update_time;
        ^
   kernel/sched/fair.c:8119:36: error: 'struct cfs_rq' has no member named 'avg'
      se->avg.last_update_time = cfs_rq->avg.last_update_time;
                                       ^
   cc1: some warnings being treated as errors

vim +/__update_load_avg +8094 kernel/sched/fair.c

  8088			 * Detaching was already done by switched_from_fair() when
  8089			 * the task got off from the fair_sched_class. But now that
  8090			 * the base cfs_rq for aging is about to be changed, if we
  8091			 * enabled ATTACH_AGE_LOAD then we perform the aging here
  8092			 * with the old cfs_rq, as the cfs_rq is not changed yet.
  8093			 */
> 8094			__update_load_avg(cfs_rq->avg.last_update_time, task_cpu(p),
> 8095					  &se->avg, 0, 0, NULL);
  8096		}
  8097	}
  8098	

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Download attachment ".config.gz" of type "application/octet-stream" (24445 bytes)