Re: [PATCH 1/1] alloc_tag: skip rcu barrier on module unload if profiling was not enabled

Re: [PATCH 1/1] alloc_tag: skip rcu barrier on module unload if profiling was not enabled

[kernel test robot]

Hi Suren,

kernel test robot noticed the following build warnings:

[auto build test WARNING on 3f43be96f919cc611dcb2a4e38dd464831f4513e]

url:    https://github.com/intel-lab-lkp/linux/commits/Suren-Baghdasaryan/alloc_tag-skip-rcu-barrier-on-module-unload-if-profiling-was-not-enabled/20251205-061310
base:   3f43be96f919cc611dcb2a4e38dd464831f4513e
patch link:    https://lore.kernel.org/r/20251204220957.360838-1-surenb%40google.com
patch subject: [PATCH 1/1] alloc_tag: skip rcu barrier on module unload if profiling was not enabled
config: riscv-randconfig-001-20251206 (https://download.01.org/0day-ci/archive/20251206/202512061204.aGmmZds2-lkp@intel.com/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 14bf95b06a18b9b59c89601cbc0e5a6f2176b118)
rustc: rustc 1.88.0 (6b00bc388 2025-06-23)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251206/202512061204.aGmmZds2-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202512061204.aGmmZds2-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> lib/codetag.c:37:13: warning: unused variable 'flush_rcu_on_module_unload' [-Wunused-variable]
      37 | static bool flush_rcu_on_module_unload;
         |             ^~~~~~~~~~~~~~~~~~~~~~~~~~
   1 warning generated.


vim +/flush_rcu_on_module_unload +37 lib/codetag.c

    34	
    35	static DEFINE_MUTEX(codetag_lock);
    36	static LIST_HEAD(codetag_types);
  > 37	static bool flush_rcu_on_module_unload;
    38	

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