linux-kernel - Re: [PATCH 1/5] sched,time: count actually elapsed irq & softirq time

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Message-ID: <201606170048.Y3qTWWze%fengguang.wu@intel.com>
Date:	Fri, 17 Jun 2016 00:22:50 +0800
From:	kbuild test robot <lkp@...el.com>
To:	riel@...hat.com
Cc:	kbuild-all@...org, linux-kernel@...r.kernel.org, mingo@...nel.org,
	pbonzini@...hat.com, peterz@...radead.org, fweisbec@...il.com,
	wanpeng.li@...mail.com, efault@....de, tglx@...utronix.de,
	rkrcmar@...hat.com
Subject: Re: [PATCH 1/5] sched,time: count actually elapsed irq & softirq time

Hi,

[auto build test ERROR on tip/sched/core]
[also build test ERROR on next-20160616]
[cannot apply to v4.7-rc3]
[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/riel-redhat-com/sched-time-fix-irq-time-accounting-with-nohz_idle/20160617-001150
config: i386-tinyconfig (attached as .config)
compiler: gcc-6 (Debian 6.1.1-1) 6.1.1 20160430
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

Note: the linux-review/riel-redhat-com/sched-time-fix-irq-time-accounting-with-nohz_idle/20160617-001150 HEAD cc827b6bc02ef052d79b5dbd2c355d9483a8ada7 builds fine.
      It only hurts bisectibility.

All errors (new ones prefixed by >>):

   kernel/sched/cputime.c: In function 'account_other_ticks':
>> kernel/sched/cputime.c:299:16: error: implicit declaration of function 'irqtime_account_hi_update' [-Werror=implicit-function-declaration]
      accounted += irqtime_account_hi_update(max_jiffies - accounted);
                   ^~~~~~~~~~~~~~~~~~~~~~~~~
>> kernel/sched/cputime.c:302:16: error: implicit declaration of function 'irqtime_account_si_update' [-Werror=implicit-function-declaration]
      accounted += irqtime_account_si_update(max_jiffies - accounted);
                   ^~~~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/irqtime_account_hi_update +299 kernel/sched/cputime.c

   293	{
   294		unsigned long accounted;
   295	
   296		accounted = steal_account_process_tick(max_jiffies);
   297	
   298		if (accounted < max_jiffies)
 > 299			accounted += irqtime_account_hi_update(max_jiffies - accounted);
   300	
   301		if (accounted < max_jiffies)
 > 302			accounted += irqtime_account_si_update(max_jiffies - accounted);
   303	
   304		return accounted;
   305	}

---
0-DAY kernel test infrastructure                Open Source Technology Center
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