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McKenney" Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org Subject: [paulmck-rcu:srcu-cf.2023.03.23a 14/20] kernel/rcu/tasks.h:140:20: warning: 'tasks_rcu_exit_srcu' defined but not used Message-ID: <202303241725.0RIyOS2U-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tree: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git srcu-cf.2023.03.23a head: 01abd52f1773d0ad92560b79bb55b48e26da06d5 commit: fd18a19e0cef4deac7fb327209443a851355653a [14/20] srcu: Move work-scheduling fields from srcu_struct to srcu_usage config: x86_64-rhel-8.3-kselftests (https://download.01.org/0day-ci/archive/20230324/202303241725.0RIyOS2U-lkp@intel.com/config) compiler: gcc-11 (Debian 11.3.0-8) 11.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git/commit/?id=fd18a19e0cef4deac7fb327209443a851355653a git remote add paulmck-rcu https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git git fetch --no-tags paulmck-rcu srcu-cf.2023.03.23a git checkout fd18a19e0cef4deac7fb327209443a851355653a # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=x86_64 olddefconfig make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash kernel/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot | Link: https://lore.kernel.org/oe-kbuild-all/202303241725.0RIyOS2U-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from include/linux/srcu.h:49, from include/linux/notifier.h:16, from arch/x86/include/asm/uprobes.h:13, from include/linux/uprobes.h:49, from include/linux/mm_types.h:16, from include/linux/sched/signal.h:13, from kernel/rcu/update.c:26: >> kernel/rcu/tasks.h:140:20: warning: 'tasks_rcu_exit_srcu' defined but not used [-Wunused-variable] 140 | DEFINE_STATIC_SRCU(tasks_rcu_exit_srcu); | ^~~~~~~~~~~~~~~~~~~ include/linux/srcutree.h:171:38: note: in definition of macro '__DEFINE_SRCU' 171 | is_static struct srcu_struct name = \ | ^~~~ kernel/rcu/tasks.h:140:1: note: in expansion of macro 'DEFINE_STATIC_SRCU' 140 | DEFINE_STATIC_SRCU(tasks_rcu_exit_srcu); | ^~~~~~~~~~~~~~~~~~ vim +/tasks_rcu_exit_srcu +140 kernel/rcu/tasks.h 07e105158d97b4 Paul E. McKenney 2020-03-02 138 eacd6f04a13331 Paul E. McKenney 2020-03-02 139 /* Track exiting tasks in order to allow them to be waited for. */ eacd6f04a13331 Paul E. McKenney 2020-03-02 @140 DEFINE_STATIC_SRCU(tasks_rcu_exit_srcu); eacd6f04a13331 Paul E. McKenney 2020-03-02 141 :::::: The code at line 140 was first introduced by commit :::::: eacd6f04a1333187dd3e96e5635c0edce0a2e354 rcu-tasks: Move Tasks RCU to its own file :::::: TO: Paul E. McKenney :::::: CC: Paul E. McKenney -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests