linux-kernel - Re: [PATCH 09/11] cpufreq: amd-pstate: implement heterogeneous core topology for highest performance initialization

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Date: Wed, 8 May 2024 03:40:14 +0800
From: kernel test robot <lkp@...el.com>
To: Perry Yuan <perry.yuan@....com>, rafael.j.wysocki@...el.com,
	Mario.Limonciello@....com, viresh.kumar@...aro.org,
	Ray.Huang@....com, gautham.shenoy@....com, Borislav.Petkov@....com
Cc: oe-kbuild-all@...ts.linux.dev, Alexander.Deucher@....com,
	Xinmei.Huang@....com, Xiaojian.Du@....com, Li.Meng@....com,
	linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 09/11] cpufreq: amd-pstate: implement heterogeneous core
 topology for highest performance initialization

Hi Perry,

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 next-20240507]
[cannot apply to tip/x86/core linus/master v6.9-rc7]
[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/cpufreq-amd-pstate-optimiza-the-initial-frequency-values-verification/20240507-151930
base:   https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next
patch link:    https://lore.kernel.org/r/731a28ea8dda4ca1db64f673c87770de4646290b.1715065568.git.perry.yuan%40amd.com
patch subject: [PATCH 09/11] cpufreq: amd-pstate: implement heterogeneous core topology for highest performance initialization
config: i386-buildonly-randconfig-005-20240507 (https://download.01.org/0day-ci/archive/20240508/202405080340.n0nVlmfY-lkp@intel.com/config)
compiler: gcc-11 (Ubuntu 11.4.0-4ubuntu1) 11.4.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240508/202405080340.n0nVlmfY-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/202405080340.n0nVlmfY-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from arch/x86/include/asm/cpufeature.h:5,
                    from arch/x86/include/asm/thread_info.h:59,
                    from include/linux/thread_info.h:60,
                    from include/linux/spinlock.h:60,
                    from include/linux/swait.h:7,
                    from include/linux/completion.h:12,
                    from include/linux/crypto.h:15,
                    from arch/x86/kernel/asm-offsets.c:9:
   arch/x86/include/asm/processor.h: In function 'amd_get_this_core_type':
>> arch/x86/include/asm/processor.h:690:1: warning: no return statement in function returning non-void [-Wreturn-type]
     690 | static inline int amd_get_this_core_type(void)          { }
         | ^~~~~~
--
   In file included from arch/x86/include/asm/cpufeature.h:5,
                    from arch/x86/include/asm/thread_info.h:59,
                    from include/linux/thread_info.h:60,
                    from include/linux/spinlock.h:60,
                    from include/linux/swait.h:7,
                    from include/linux/completion.h:12,
                    from include/linux/crypto.h:15,
                    from arch/x86/kernel/asm-offsets.c:9:
   arch/x86/include/asm/processor.h: In function 'amd_get_this_core_type':
>> arch/x86/include/asm/processor.h:690:1: warning: no return statement in function returning non-void [-Wreturn-type]
     690 | static inline int amd_get_this_core_type(void)          { }
         | ^~~~~~


vim +690 arch/x86/include/asm/processor.h

   680	
   681	#ifdef CONFIG_CPU_SUP_AMD
   682	extern u32 amd_get_highest_perf(void);
   683	extern void amd_clear_divider(void);
   684	extern void amd_check_microcode(void);
   685	extern int amd_get_this_core_type(void);
   686	#else
   687	static inline u32 amd_get_highest_perf(void)		{ return 0; }
   688	static inline void amd_clear_divider(void)		{ }
   689	static inline void amd_check_microcode(void)		{ }
 > 690	static inline int amd_get_this_core_type(void)		{ }
   691	#endif
   692	

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