linux-kernel - Re: [PATCH v3 4/8] cpufreq: amd_pstate: add AMD Pstate EPP support for the MSR based processors

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Message-ID: <202211091345.lm0ueI83-lkp@intel.com>
Date:   Wed, 9 Nov 2022 13:55:39 +0800
From:   kernel test robot <lkp@...el.com>
To:     Perry Yuan <Perry.Yuan@....com>, rafael.j.wysocki@...el.com,
        ray.huang@....com, viresh.kumar@...aro.org
Cc:     oe-kbuild-all@...ts.linux.dev, Deepak.Sharma@....com,
        Mario.Limonciello@....com, Nathan.Fontenot@....com,
        Alexander.Deucher@....com, Shimmer.Huang@....com,
        Xiaojian.Du@....com, Li.Meng@....com, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org, Perry Yuan <Perry.Yuan@....com>
Subject: Re: [PATCH v3 4/8] cpufreq: amd_pstate: add AMD Pstate EPP support
 for the MSR based processors

Hi Perry,

I love your patch! Yet something to improve:

[auto build test ERROR on rafael-pm/linux-next]
[also build test ERROR on linus/master v6.1-rc4 next-20221108]
[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/Perry-Yuan/Implement-AMD-Pstate-EPP-Driver/20221108-020418
base:   https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next
patch link:    https://lore.kernel.org/r/20221107175705.2207842-5-Perry.Yuan%40amd.com
patch subject: [PATCH v3 4/8] cpufreq: amd_pstate: add AMD Pstate EPP support for the MSR based processors
config: i386-allyesconfig
compiler: gcc-11 (Debian 11.3.0-8) 11.3.0
reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/3d16457032d0668bcaa51c537e74f6e1aa0c9a73
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Perry-Yuan/Implement-AMD-Pstate-EPP-Driver/20221108-020418
        git checkout 3d16457032d0668bcaa51c537e74f6e1aa0c9a73
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/

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

All errors (new ones prefixed by >>):

   drivers/cpufreq/amd-pstate.c: In function 'amd_pstate_get_energy_pref_index':
>> drivers/cpufreq/amd-pstate.c:112:15: error: implicit declaration of function 'amd_pstate_get_epp' [-Werror=implicit-function-declaration]
     112 |         epp = amd_pstate_get_epp(cpudata, 0);
         |               ^~~~~~~~~~~~~~~~~~
   drivers/cpufreq/amd-pstate.c: In function 'store_energy_performance_preference':
>> drivers/cpufreq/amd-pstate.c:767:15: error: implicit declaration of function 'amd_pstate_set_energy_pref_index'; did you mean 'amd_pstate_get_energy_pref_index'? [-Werror=implicit-function-declaration]
     767 |         ret = amd_pstate_set_energy_pref_index(cpudata, ret, raw, epp);
         |               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
         |               amd_pstate_get_energy_pref_index
   drivers/cpufreq/amd-pstate.c: In function 'update_boost_state':
   drivers/cpufreq/amd-pstate.c:815:29: warning: variable 'cpudata' set but not used [-Wunused-but-set-variable]
     815 |         struct amd_cpudata *cpudata;
         |                             ^~~~~~~
   In file included from drivers/cpufreq/amd-pstate.c:39:
   At top level:
   include/linux/amd-pstate.h:150:21: warning: 'epp_values' defined but not used [-Wunused-variable]
     150 | static unsigned int epp_values[] = {
         |                     ^~~~~~~~~~
   cc1: some warnings being treated as errors


vim +/amd_pstate_get_epp +112 drivers/cpufreq/amd-pstate.c

   105	
   106	static int amd_pstate_get_energy_pref_index(struct amd_cpudata *cpudata, int *raw_epp)
   107	{
   108		s16 epp;
   109		int index = -EINVAL;
   110	
   111		*raw_epp = 0;
 > 112		epp = amd_pstate_get_epp(cpudata, 0);
   113		if (epp < 0)
   114			return epp;
   115	
   116		switch (epp) {
   117		case AMD_CPPC_EPP_PERFORMANCE:
   118			index = EPP_INDEX_PERFORMANCE;
   119			break;
   120		case AMD_CPPC_EPP_BALANCE_PERFORMANCE:
   121			index = EPP_INDEX_BALANCE_PERFORMANCE;
   122			break;
   123		case AMD_CPPC_EPP_BALANCE_POWERSAVE:
   124			index = EPP_INDEX_BALANCE_POWERSAVE;
   125			break;
   126		case AMD_CPPC_EPP_POWERSAVE:
   127			index = EPP_INDEX_POWERSAVE;
   128			break;
   129		default:
   130			*raw_epp = epp;
   131			index = 0;
   132		}
   133	
   134		return index;
   135	}
   136	

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