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Mon, 21 Aug 2023 18:38:32 +0000 Date: Tue, 22 Aug 2023 02:37:57 +0800 From: kernel test robot To: Qing Zhang Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, Huacai Chen Subject: kernel/trace/trace_events.c:2102:37: warning: 'ftrace_event_id_fops' defined but not used Message-ID: <202308220210.4uvlS2Zx-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/torvalds/linux.git master head: f7757129e3dea336c407551c98f50057c22bb266 commit: 93a4fa622eb061f75f87f0cf9609ab4e69c67d01 LoongArch: Add STACKTRACE support date: 1 year ago config: loongarch-randconfig-r014-20230821 (https://download.01.org/0day-ci/archive/20230822/202308220210.4uvlS2Zx-lkp@intel.com/config) compiler: loongarch64-linux-gcc (GCC) 12.3.0 reproduce: (https://download.01.org/0day-ci/archive/20230822/202308220210.4uvlS2Zx-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 | Closes: https://lore.kernel.org/oe-kbuild-all/202308220210.4uvlS2Zx-lkp@intel.com/ All warnings (new ones prefixed by >>): >> kernel/trace/trace_events.c:2102:37: warning: 'ftrace_event_id_fops' defined but not used [-Wunused-const-variable=] 2102 | static const struct file_operations ftrace_event_id_fops = { | ^~~~~~~~~~~~~~~~~~~~ -- In file included from kernel/locking/lockdep.c:61: >> kernel/locking/lockdep_internals.h:69:28: warning: 'LOCKF_USED_IN_IRQ_READ' defined but not used [-Wunused-const-variable=] 69 | static const unsigned long LOCKF_USED_IN_IRQ_READ = | ^~~~~~~~~~~~~~~~~~~~~~ >> kernel/locking/lockdep_internals.h:63:28: warning: 'LOCKF_ENABLED_IRQ_READ' defined but not used [-Wunused-const-variable=] 63 | static const unsigned long LOCKF_ENABLED_IRQ_READ = | ^~~~~~~~~~~~~~~~~~~~~~ >> kernel/locking/lockdep_internals.h:57:28: warning: 'LOCKF_USED_IN_IRQ' defined but not used [-Wunused-const-variable=] 57 | static const unsigned long LOCKF_USED_IN_IRQ = | ^~~~~~~~~~~~~~~~~ >> kernel/locking/lockdep_internals.h:51:28: warning: 'LOCKF_ENABLED_IRQ' defined but not used [-Wunused-const-variable=] 51 | static const unsigned long LOCKF_ENABLED_IRQ = | ^~~~~~~~~~~~~~~~~ vim +/ftrace_event_id_fops +2102 kernel/trace/trace_events.c 981d081ec8b958 Steven Rostedt 2009-03-02 2101 23725aeeab10ba Peter Zijlstra 2009-03-19 @2102 static const struct file_operations ftrace_event_id_fops = { 23725aeeab10ba Peter Zijlstra 2009-03-19 2103 .read = event_id_read, 6038f373a3dc1f Arnd Bergmann 2010-08-15 2104 .llseek = default_llseek, 23725aeeab10ba Peter Zijlstra 2009-03-19 2105 }; 23725aeeab10ba Peter Zijlstra 2009-03-19 2106 :::::: The code at line 2102 was first introduced by commit :::::: 23725aeeab10ba02bcf10ec49ad73146b54cb52f ftrace: provide an id file for each event :::::: TO: Peter Zijlstra :::::: CC: Ingo Molnar -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki