Re: [PATCH V6 2/4] cpufreq: amd-pstate: Add test module for amd-pstate driver

[kernel test robot <lkp@intel.com>]

Hi Meng,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on shuah-kselftest/next]
[also build test WARNING on rafael-pm/linux-next linux/master linus/master v5.18-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]

url:    https://github.com/intel-lab-lkp/linux/commits/Meng-Li/Add-unit-test-module-for-AMD-P-State-driver/20220519-215444
base:   https://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest.git next
config: i386-allyesconfig (https://download.01.org/0day-ci/archive/20220520/202205200812.g9S1SWP3-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-1) 11.3.0
reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/5a00a68d142a32f76cf2e770d75463802273e7ed
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Meng-Li/Add-unit-test-module-for-AMD-P-State-driver/20220519-215444
        git checkout 5a00a68d142a32f76cf2e770d75463802273e7ed
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/cpufreq/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   In file included from include/linux/kernel.h:29,
                    from arch/x86/include/asm/percpu.h:27,
                    from arch/x86/include/asm/current.h:6,
                    from arch/x86/include/asm/processor.h:17,
                    from arch/x86/include/asm/timex.h:5,
                    from include/linux/timex.h:65,
                    from include/linux/time32.h:13,
                    from include/linux/time.h:60,
                    from include/linux/stat.h:19,
                    from include/linux/module.h:13,
                    from include/../tools/testing/selftests/kselftest_module.h:5,
                    from drivers/cpufreq/amd-pstate-ut.c:23:
   drivers/cpufreq/amd-pstate-ut.c: In function 'get_shared_mem':
>> include/linux/kern_levels.h:5:25: warning: format '%ld' expects argument of type 'long int', but argument 3 has type 'ssize_t' {aka 'int'} [-Wformat=]
       5 | #define KERN_SOH        "\001"          /* ASCII Start Of Header */
         |                         ^~~~~~
   include/linux/printk.h:418:25: note: in definition of macro 'printk_index_wrap'
     418 |                 _p_func(_fmt, ##__VA_ARGS__);                           \
         |                         ^~~~
   include/linux/printk.h:489:9: note: in expansion of macro 'printk'
     489 |         printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
         |         ^~~~~~
   include/linux/kern_levels.h:11:25: note: in expansion of macro 'KERN_SOH'
      11 | #define KERN_ERR        KERN_SOH "3"    /* error conditions */
         |                         ^~~~~~~~
   include/linux/printk.h:489:16: note: in expansion of macro 'KERN_ERR'
     489 |         printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
         |                ^~~~~~~~
   drivers/cpufreq/amd-pstate-ut.c:83:33: note: in expansion of macro 'pr_err'
      83 |                                 pr_err("%s ret=%ld unable to read from param file!\n",
         |                                 ^~~~~~


vim +5 include/linux/kern_levels.h

314ba3520e513a Joe Perches 2012-07-30  4  
04d2c8c83d0e3a Joe Perches 2012-07-30 @5  #define KERN_SOH	"\001"		/* ASCII Start Of Header */
04d2c8c83d0e3a Joe Perches 2012-07-30  6  #define KERN_SOH_ASCII	'\001'
04d2c8c83d0e3a Joe Perches 2012-07-30  7  

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