Hi Petr, kernel test robot noticed the following build errors:
[auto build test ERROR on 05f7e89ab9731565d8a62e3b5d1ec206485eeb0b] url: https://github.com/intel-lab-lkp/linux/commits/Petr-Pavlu/tracing-Fix-checking-of-freed-trace_event_file-for-hist-files/20260210-194023 base: 05f7e89ab9731565d8a62e3b5d1ec206485eeb0b patch link: https://lore.kernel.org/r/20260210113427.1068932-2-petr.pavlu%40suse.com patch subject: [PATCH 1/5] tracing: Fix checking of freed trace_event_file for hist files config: sparc64-defconfig (https://download.01.org/0day-ci/archive/20260211/[email protected]/config) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260211/[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 errors (new ones prefixed by >>): >> kernel/trace/trace_events.c:1300:2: error: call to undeclared function >> 'hist_poll_wakeup'; ISO C99 and later do not support implicit function >> declarations [-Wimplicit-function-declaration] 1300 | hist_poll_wakeup(); | ^ 1 error generated. vim +/hist_poll_wakeup +1300 kernel/trace/trace_events.c 1289 1290 static void remove_event_file_dir(struct trace_event_file *file) 1291 { 1292 eventfs_remove_dir(file->ei); 1293 list_del(&file->list); 1294 remove_subsystem(file->system); 1295 free_event_filter(file->filter); 1296 file->flags |= EVENT_FILE_FL_FREED; 1297 event_file_put(file); 1298 1299 /* Wake up hist poll waiters to notice the EVENT_FILE_FL_FREED flag. */ > 1300 hist_poll_wakeup(); 1301 } 1302 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
