linux-kernel - Re: [PATCH v1 5/5] PM: sleep: Spread out async kworker threads during dpm

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Message-ID: <202411172344.QqFap290-lkp@intel.com>
Date: Sun, 17 Nov 2024 21:34:06 +0800
From: kernel test robot <lkp@...el.com>
To: Saravana Kannan <saravanak@...gle.com>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Pavel Machek <pavel@....cz>, Len Brown <len.brown@...el.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Ingo Molnar <mingo@...hat.com>, Juri Lelli <juri.lelli@...hat.com>,
	Vincent Guittot <vincent.guittot@...aro.org>,
	Dietmar Eggemann <dietmar.eggemann@....com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>,
	Valentin Schneider <vschneid@...hat.com>
Cc: oe-kbuild-all@...ts.linux.dev, Saravana Kannan <saravanak@...gle.com>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Marek Vasut <marex@...x.de>, Bird@...gle.com,
	Tim <Tim.Bird@...y.com>, kernel-team@...roid.com,
	linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 5/5] PM: sleep: Spread out async kworker threads
 during dpm_resume*() phases

Hi Saravana,

kernel test robot noticed the following build warnings:

[auto build test WARNING on rafael-pm/linux-next]
[also build test WARNING on rafael-pm/bleeding-edge tip/sched/core amd-pstate/linux-next amd-pstate/bleeding-edge linus/master v6.12-rc7 next-20241115]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Saravana-Kannan/PM-sleep-Fix-runtime-PM-issue-in-dpm_resume/20241115-183855
base:   https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next
patch link:    https://lore.kernel.org/r/20241114220921.2529905-6-saravanak%40google.com
patch subject: [PATCH v1 5/5] PM: sleep: Spread out async kworker threads during dpm_resume*() phases
config: arm-randconfig-003-20241117 (https://download.01.org/0day-ci/archive/20241117/202411172344.QqFap290-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241117/202411172344.QqFap290-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202411172344.QqFap290-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from kernel/sched/build_utility.c:88:
>> kernel/sched/topology.c:287:6: warning: no previous prototype for 'sched_set_energy_aware' [-Wmissing-prototypes]
     287 | void sched_set_energy_aware(unsigned int enable)
         |      ^~~~~~~~~~~~~~~~~~~~~~


vim +/sched_set_energy_aware +287 kernel/sched/topology.c

   286	
 > 287	void sched_set_energy_aware(unsigned int enable)
   288	{
   289		int state;
   290	
   291		if (!sched_is_eas_possible(cpu_active_mask))
   292			return;
   293	
   294		sysctl_sched_energy_aware = enable;
   295		state = static_branch_unlikely(&sched_energy_present);
   296		if (state != sysctl_sched_energy_aware)
   297			rebuild_sched_domains_energy();
   298	}
   299	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki