linux-kernel - Re: [PATCH 6/6] x86: intel_pstate: handle runtime turbo disablement/enablement in freq. invariance

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Date:   Wed, 13 Nov 2019 05:28:58 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Giovanni Gherdovich <ggherdovich@...e.cz>
Cc:     kbuild-all@...ts.01.org,
        Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Borislav Petkov <bp@...e.de>, Len Brown <lenb@...nel.org>,
        "Rafael J . Wysocki" <rjw@...ysocki.net>, x86@...nel.org,
        linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Mel Gorman <mgorman@...hsingularity.net>,
        Matt Fleming <matt@...eblueprint.co.uk>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Juri Lelli <juri.lelli@...hat.com>,
        Paul Turner <pjt@...gle.com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Quentin Perret <qperret@...rret.net>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Doug Smythies <dsmythies@...us.net>,
        Giovanni Gherdovich <ggherdovich@...e.cz>
Subject: Re: [PATCH 6/6] x86: intel_pstate: handle runtime turbo
 disablement/enablement in freq. invariance

Hi Giovanni,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on tip/sched/core]
[cannot apply to v5.4-rc7 next-20191111]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Giovanni-Gherdovich/Add-support-for-frequency-invariance-for-some-x86/20191113-035438
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git a0e813f26ebcb25c0b5e504498fbd796cca1a4ba
config: i386-randconfig-e001-201945 (attached as .config)
compiler: gcc-7 (Debian 7.4.0-14) 7.4.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

   drivers/cpufreq/intel_pstate.c: In function 'intel_pstate_update_limits':
>> drivers/cpufreq/intel_pstate.c:925:3: error: implicit declaration of function 'set_arch_max_freq' [-Werror=implicit-function-declaration]
      set_arch_max_freq(global.turbo_disabled);
      ^~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/set_arch_max_freq +925 drivers/cpufreq/intel_pstate.c

   913	
   914	static void intel_pstate_update_limits(unsigned int cpu)
   915	{
   916		mutex_lock(&intel_pstate_driver_lock);
   917	
   918		update_turbo_state();
   919		/*
   920		 * If turbo has been turned on or off globally, policy limits for
   921		 * all CPUs need to be updated to reflect that.
   922		 */
   923		if (global.turbo_disabled_mf != global.turbo_disabled) {
   924			global.turbo_disabled_mf = global.turbo_disabled;
 > 925			set_arch_max_freq(global.turbo_disabled);
   926			for_each_possible_cpu(cpu)
   927				intel_pstate_update_max_freq(cpu);
   928		} else {
   929			cpufreq_update_policy(cpu);
   930		}
   931	
   932		mutex_unlock(&intel_pstate_driver_lock);
   933	}
   934	

---
0-DAY kernel test infrastructure                 Open Source Technology Center
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org Intel Corporation

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