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Message-ID: <202103100817.luONaipp-lkp@intel.com>
Date: Wed, 10 Mar 2021 08:40:51 +0800
From: kernel test robot <lkp@...el.com>
To: Daniel Lezcano <daniel.lezcano@...aro.org>, rafael@...nel.org
Cc: kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
lukasz.luba@....com
Subject: Re: [PATCH v2 5/5] powercap/drivers/dtpm: Scale the power with the
load
Hi Daniel,
I love your patch! Perhaps something to improve:
[auto build test WARNING on pm/linux-next]
[also build test WARNING on linux/master linus/master v5.12-rc2 next-20210309]
[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]
url: https://github.com/0day-ci/linux/commits/Daniel-Lezcano/powercap-drivers-dtpm-Encapsulate-even-more-the-code/20210310-064505
base: https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next
config: powerpc-randconfig-r005-20210309 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project cd9a69289c7825d54450cb6829fef2c8e0f1963a)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install powerpc cross compiling tool for clang build
# apt-get install binutils-powerpc-linux-gnu
# https://github.com/0day-ci/linux/commit/195420841883f38897ba1e10ff70641dab0191ba
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Daniel-Lezcano/powercap-drivers-dtpm-Encapsulate-even-more-the-code/20210310-064505
git checkout 195420841883f38897ba1e10ff70641dab0191ba
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
>> drivers/powercap/dtpm_cpu.c:76:32: warning: variable 'cpu' is uninitialized when used here [-Wuninitialized]
max = arch_scale_cpu_capacity(cpu);
^~~
drivers/powercap/dtpm_cpu.c:74:9: note: initialize the variable 'cpu' to silence this warning
int cpu;
^
= 0
1 warning generated.
vim +/cpu +76 drivers/powercap/dtpm_cpu.c
70
71 static u64 scale_pd_power_uw(struct cpumask *pd_mask, u64 power)
72 {
73 unsigned long max, sum_util = 0;
74 int cpu;
75
> 76 max = arch_scale_cpu_capacity(cpu);
77
78 for_each_cpu_and(cpu, pd_mask, cpu_online_mask)
79 sum_util += sched_cpu_util(cpu, max);
80
81 return (power * ((sum_util << 10) / max)) >> 10;
82 }
83
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
Download attachment ".config.gz" of type "application/gzip" (22230 bytes)
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