linux-kernel - Re: [PATCH v4 2/2] cpuidle: allow setting deepest idle

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Date:   Tue, 29 Nov 2016 08:59:27 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Jacob Pan <jacob.jun.pan@...ux.intel.com>
Cc:     kbuild-all@...org, Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux PM <linux-pm@...r.kernel.org>,
        Arjan van de Ven <arjan@...ux.intel.com>,
        Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
        Len Brown <lenb@...nel.org>,
        Rafael Wysocki <rafael.j.wysocki@...el.com>,
        Eduardo Valentin <edubezval@...il.com>,
        Zhang Rui <rui.zhang@...el.com>,
        Petr Mladek <pmladek@...e.com>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Jacob Pan <jacob.jun.pan@...ux.intel.com>
Subject: Re: [PATCH v4 2/2] cpuidle: allow setting deepest idle

Hi Jacob,

[auto build test ERROR on tip/sched/core]
[also build test ERROR on v4.9-rc7 next-20161128]
[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/Jacob-Pan/Stop-sched-tick-in-idle-injection-task/20161129-062641
config: sh-sh7785lcr_32bit_defconfig (attached as .config)
compiler: sh4-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=sh 

All errors (new ones prefixed by >>):

   kernel/built-in.o: In function `cpuidle_idle_call':
>> kernel/sched/idle.c:197: undefined reference to `cpuidle_find_deepest_state'

vim +197 kernel/sched/idle.c

37352273 Peter Zijlstra 2014-04-11  191  exit_idle:
8ca3c642 Daniel Lezcano 2014-03-03  192  	__current_set_polling();
8ca3c642 Daniel Lezcano 2014-03-03  193  
a1d028bd Daniel Lezcano 2014-03-03  194  	/*
37352273 Peter Zijlstra 2014-04-11  195  	 * It is up to the idle functions to reenable local interrupts
a1d028bd Daniel Lezcano 2014-03-03  196  	 */
c8cc7d4d Daniel Lezcano 2014-03-03 @197  	if (WARN_ON_ONCE(irqs_disabled()))
c8cc7d4d Daniel Lezcano 2014-03-03  198  		local_irq_enable();
c8cc7d4d Daniel Lezcano 2014-03-03  199  
c8cc7d4d Daniel Lezcano 2014-03-03  200  	rcu_idle_exit();

:::::: The code at line 197 was first introduced by commit
:::::: c8cc7d4de7a4f2fb1f8774ec2de5b49c46c42e64 sched/idle: Reorganize the idle loop

:::::: TO: Daniel Lezcano <daniel.lezcano@...aro.org>
:::::: CC: Ingo Molnar <mingo@...nel.org>

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