Re: [PATCH v2 3/3] acpi: processor_perflib: extend X86 dependency

[kernel test robot]

Hi Arnd,

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 char-misc/char-misc-testing char-misc/char-misc-next char-misc/char-misc-linus groeck-staging/hwmon-next soc/for-next linus/master v6.12-rc2 next-20241011]
[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/Arnd-Bergmann/acpi-allow-building-without-CONFIG_HAS_IOPORT/20241011-142245
base:   https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next
patch link:    https://lore.kernel.org/r/20241011061948.3211423-3-arnd%40kernel.org
patch subject: [PATCH v2 3/3] acpi: processor_perflib: extend X86 dependency
config: riscv-allmodconfig (https://download.01.org/0day-ci/archive/20241013/202410130611.9S3HzhgF-lkp@xxxxxxxxx/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 70e0a7e7e6a8541bcc46908c592eed561850e416)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241013/202410130611.9S3HzhgF-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202410130611.9S3HzhgF-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

>> drivers/acpi/processor_perflib.c:27:21: warning: unused variable 'performance_mutex' [-Wunused-variable]
      27 | static DEFINE_MUTEX(performance_mutex);
         |                     ^~~~~~~~~~~~~~~~~
   include/linux/mutex.h:112:15: note: expanded from macro 'DEFINE_MUTEX'
     112 |         struct mutex mutexname = __MUTEX_INITIALIZER(mutexname)
         |                      ^~~~~~~~~
   1 warning generated.


vim +/performance_mutex +27 drivers/acpi/processor_perflib.c

^1da177e4c3f41 Linus Torvalds   2005-04-16  26  
65c19bbd28cba5 Arjan van de Ven 2006-04-27 @27  static DEFINE_MUTEX(performance_mutex);
^1da177e4c3f41 Linus Torvalds   2005-04-16  28  

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