Messages in this thread | | | Date | Sun, 28 Nov 2021 04:58:12 +0800 | From | kernel test robot <> | Subject | [rostedt-trace:for-next 2/3] kernel/trace/trace_events.c:2681:25: warning: variable 'no_pid_list' set but not used |
| |
tree: https://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git for-next head: a55f224ff5f238013de8762c4287117e47b86e22 commit: 6cb206508b621a9a0a2c35b60540e399225c8243 [2/3] tracing: Check pid filtering when creating events config: hexagon-randconfig-r045-20211128 (https://download.01.org/0day-ci/archive/20211128/202111280401.qC0z99JB-lkp@intel.com/config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 5162b558d8c0b542e752b037e72a69d5fd51eb1e) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git/commit/?id=6cb206508b621a9a0a2c35b60540e399225c8243 git remote add rostedt-trace https://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git git fetch --no-tags rostedt-trace for-next git checkout 6cb206508b621a9a0a2c35b60540e399225c8243 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> kernel/trace/trace_events.c:2681:25: warning: variable 'no_pid_list' set but not used [-Wunused-but-set-variable] struct trace_pid_list *no_pid_list; ^ 1 warning generated.
vim +/no_pid_list +2681 kernel/trace/trace_events.c
2676 2677 static struct trace_event_file * 2678 trace_create_new_event(struct trace_event_call *call, 2679 struct trace_array *tr) 2680 { > 2681 struct trace_pid_list *no_pid_list; 2682 struct trace_pid_list *pid_list; 2683 struct trace_event_file *file; 2684 unsigned int first; 2685 2686 file = kmem_cache_alloc(file_cachep, GFP_TRACE); 2687 if (!file) 2688 return NULL; 2689 2690 pid_list = rcu_dereference_protected(tr->filtered_pids, 2691 lockdep_is_held(&event_mutex)); 2692 no_pid_list = rcu_dereference_protected(tr->filtered_no_pids, 2693 lockdep_is_held(&event_mutex)); 2694 2695 if (!trace_pid_list_first(pid_list, &first) || 2696 !trace_pid_list_first(pid_list, &first)) 2697 file->flags |= EVENT_FILE_FL_PID_FILTER; 2698 2699 file->event_call = call; 2700 file->tr = tr; 2701 atomic_set(&file->sm_ref, 0); 2702 atomic_set(&file->tm_ref, 0); 2703 INIT_LIST_HEAD(&file->triggers); 2704 list_add(&file->list, &tr->events); 2705 2706 return file; 2707 } 2708
--- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
| |