[android-common:android15-6.6-2025-10 12/12] include/trace/stages/init.h:2:23: warning: 'str__swapfile__trace_system_name' defined but not used
kernel test robot <[email protected]> Thu, 06 Aug 2026 14:18:45 +0800
| Newsgroups | dev.linux.lists.oe-kbuild-all |
|---|---|
| Message-ID | <[email protected]> |
Hi Tangquan, FYI, the error/warning still remains. tree: https://android.googlesource.com/kernel/common android15-6.6-2025-10 head: e6a1e5cb500cc4941674da20d2a46a005f007e0b commit: 58aa298d671081bcef5cd6f245c7ee1f1a414d00 [12/12] ANDROID: vendor_hooks: Add hooks to enhance mTHP functionality config: i386-buildonly-randconfig-002-20260806 (https://download.01.org/0day-ci/archive/20260806/[email protected]/config) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260806/[email protected]/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 <[email protected]> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ All warnings (new ones prefixed by >>): In file included from include/trace/trace_events.h:27, from include/trace/define_trace.h:102, from include/trace/hooks/swapfile.h:19, from drivers/android/vendor_hooks.c:86: >> include/trace/stages/init.h:2:23: warning: 'str__swapfile__trace_system_name' defined but not used [-Wunused-const-variable=] 2 | #define __app__(x, y) str__##x##y | ^~~~~ include/trace/stages/init.h:3:21: note: in expansion of macro '__app__' 3 | #define __app(x, y) __app__(x, y) | ^~~~~~~ include/trace/stages/init.h:5:29: note: in expansion of macro '__app' 5 | #define TRACE_SYSTEM_STRING __app(TRACE_SYSTEM_VAR,__trace_system_name) | ^~~~~ include/trace/stages/init.h:8:27: note: in expansion of macro 'TRACE_SYSTEM_STRING' 8 | static const char TRACE_SYSTEM_STRING[] = \ | ^~~~~~~~~~~~~~~~~~~ include/trace/stages/init.h:11:1: note: in expansion of macro 'TRACE_MAKE_SYSTEM_STR' 11 | TRACE_MAKE_SYSTEM_STR(); | ^~~~~~~~~~~~~~~~~~~~~ In file included from include/trace/trace_events.h:27, from include/trace/define_trace.h:102, from include/trace/hooks/typec.h:24, from drivers/android/vendor_hooks.c:84: include/trace/stages/init.h:2:23: warning: 'str__typec__trace_system_name' defined but not used [-Wunused-const-variable=] 2 | #define __app__(x, y) str__##x##y | ^~~~~ include/trace/stages/init.h:3:21: note: in expansion of macro '__app__' 3 | #define __app(x, y) __app__(x, y) | ^~~~~~~ include/trace/stages/init.h:5:29: note: in expansion of macro '__app' 5 | #define TRACE_SYSTEM_STRING __app(TRACE_SYSTEM_VAR,__trace_system_name) | ^~~~~ include/trace/stages/init.h:8:27: note: in expansion of macro 'TRACE_SYSTEM_STRING' 8 | static const char TRACE_SYSTEM_STRING[] = \ | ^~~~~~~~~~~~~~~~~~~ include/trace/stages/init.h:11:1: note: in expansion of macro 'TRACE_MAKE_SYSTEM_STR' 11 | TRACE_MAKE_SYSTEM_STR(); | ^~~~~~~~~~~~~~~~~~~~~ In file included from include/trace/trace_events.h:27, from include/trace/define_trace.h:102, from include/trace/hooks/xhci.h:25, from drivers/android/vendor_hooks.c:83: include/trace/stages/init.h:2:23: warning: 'str__xhci__trace_system_name' defined but not used [-Wunused-const-variable=] 2 | #define __app__(x, y) str__##x##y | ^~~~~ include/trace/stages/init.h:3:21: note: in expansion of macro '__app__' 3 | #define __app(x, y) __app__(x, y) | ^~~~~~~ include/trace/stages/init.h:5:29: note: in expansion of macro '__app' 5 | #define TRACE_SYSTEM_STRING __app(TRACE_SYSTEM_VAR,__trace_system_name) | ^~~~~ include/trace/stages/init.h:8:27: note: in expansion of macro 'TRACE_SYSTEM_STRING' 8 | static const char TRACE_SYSTEM_STRING[] = \ | ^~~~~~~~~~~~~~~~~~~ include/trace/stages/init.h:11:1: note: in expansion of macro 'TRACE_MAKE_SYSTEM_STR' 11 | TRACE_MAKE_SYSTEM_STR(); | ^~~~~~~~~~~~~~~~~~~~~ In file included from include/trace/trace_events.h:27, from include/trace/define_trace.h:102, from include/trace/hooks/dmabuf.h:34, from drivers/android/vendor_hooks.c:82: include/trace/stages/init.h:2:23: warning: 'str__dmabuf__trace_system_name' defined but not used [-Wunused-const-variable=] 2 | #define __app__(x, y) str__##x##y | ^~~~~ include/trace/stages/init.h:3:21: note: in expansion of macro '__app__' 3 | #define __app(x, y) __app__(x, y) | ^~~~~~~ include/trace/stages/init.h:5:29: note: in expansion of macro '__app' 5 | #define TRACE_SYSTEM_STRING __app(TRACE_SYSTEM_VAR,__trace_system_name) | ^~~~~ include/trace/stages/init.h:8:27: note: in expansion of macro 'TRACE_SYSTEM_STRING' 8 | static const char TRACE_SYSTEM_STRING[] = \ | ^~~~~~~~~~~~~~~~~~~ include/trace/stages/init.h:11:1: note: in expansion of macro 'TRACE_MAKE_SYSTEM_STR' 11 | TRACE_MAKE_SYSTEM_STR(); | ^~~~~~~~~~~~~~~~~~~~~ In file included from include/trace/trace_events.h:27, from include/trace/define_trace.h:102, from include/trace/hooks/perf.h:24, from drivers/android/vendor_hooks.c:81: include/trace/stages/init.h:2:23: warning: 'str__perf__trace_system_name' defined but not used [-Wunused-const-variable=] 2 | #define __app__(x, y) str__##x##y | ^~~~~ include/trace/stages/init.h:3:21: note: in expansion of macro '__app__' 3 | #define __app(x, y) __app__(x, y) | ^~~~~~~ include/trace/stages/init.h:5:29: note: in expansion of macro '__app' 5 | #define TRACE_SYSTEM_STRING __app(TRACE_SYSTEM_VAR,__trace_system_name) | ^~~~~ include/trace/stages/init.h:8:27: note: in expansion of macro 'TRACE_SYSTEM_STRING' 8 | static const char TRACE_SYSTEM_STRING[] = \ | ^~~~~~~~~~~~~~~~~~~ include/trace/stages/init.h:11:1: note: in expansion of macro 'TRACE_MAKE_SYSTEM_STR' 11 | TRACE_MAKE_SYSTEM_STR(); | ^~~~~~~~~~~~~~~~~~~~~ In file included from include/trace/trace_events.h:27, from include/trace/define_trace.h:102, from include/trace/hooks/fsnotify.h:22, from drivers/android/vendor_hooks.c:80: include/trace/stages/init.h:2:23: warning: 'str__fsnotify__trace_system_name' defined but not used [-Wunused-const-variable=] 2 | #define __app__(x, y) str__##x##y | ^~~~~ include/trace/stages/init.h:3:21: note: in expansion of macro '__app__' 3 | #define __app(x, y) __app__(x, y) | ^~~~~~~ vim +/str__swapfile__trace_system_name +2 include/trace/stages/init.h af6b9668e85ffd1 Steven Rostedt (Google 2022-03-03 @2) #define __app__(x, y) str__##x##y af6b9668e85ffd1 Steven Rostedt (Google 2022-03-03 3) #define __app(x, y) __app__(x, y) af6b9668e85ffd1 Steven Rostedt (Google 2022-03-03 4) :::::: The code at line 2 was first introduced by commit :::::: af6b9668e85ffd1502aada8036ccbf4dbd481708 tracing: Move the defines to create TRACE_EVENTS into their own files :::::: TO: Steven Rostedt (Google) <[email protected]> :::::: CC: Steven Rostedt (Google) <[email protected]> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki