tree: https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git bpf/fprobe_link_6 head: bb2f8cf233977d40c029e2f718e95f637980e350 commit: 00327b2f7c60bd84d8c5e887003987b2e688d159 [3/11] bpf: Add support to attach kprobe program with fprobe config: hexagon-randconfig-r041-20220214 (https://download.01.org/0day-ci/archive/20220215/202202150707.pEsVvhSW-lk...) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project ea071884b0cc7210b3cc5fe858f0e892a779a23b) 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/jolsa/perf.git/commit/?id... git remote add jolsa-perf https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git git fetch --no-tags jolsa-perf bpf/fprobe_link_6 git checkout 00327b2f7c60bd84d8c5e887003987b2e688d159 # 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 drivers/base/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): In file included from drivers/base/syscore.c:12: In file included from include/trace/events/power.h:12: static int bpf_fprobe_link_attach(const union bpf_attr *attr, struct bpf_prog *prog) ^ include/linux/trace_events.h:781:12: warning: unused function 'bpf_fprobe_link_attach' [-Wunused-function] static int bpf_fprobe_link_attach(const union bpf_attr *attr, struct bpf_prog *prog) ^ 2 warnings generated. vim +781 include/linux/trace_events.h 753 754 static inline int 755 perf_event_query_prog_array(struct perf_event *event, void __user *info) 756 { 757 return -EOPNOTSUPP; 758 } 759 static inline int bpf_probe_register(struct bpf_raw_event_map *btp, struct bpf_prog *p) 760 { 761 return -EOPNOTSUPP; 762 } 763 static inline int bpf_probe_unregister(struct bpf_raw_event_map *btp, struct bpf_prog *p) 764 { 765 return -EOPNOTSUPP; 766 } 767 static inline struct bpf_raw_event_map *bpf_get_raw_tracepoint(const char *name) 768 { 769 return NULL; 770 } 771 static inline void bpf_put_raw_tracepoint(struct bpf_raw_event_map *btp) 772 { 773 } 774 static inline int bpf_get_perf_event_info(const struct perf_event *event, 775 u32 *prog_id, u32 *fd_type, 776 const char **buf, u64 *probe_offset, 777 u64 *probe_addr) 778 { 779 return -EOPNOTSUPP; 780 } 782 { 783 return -EOPNOTSUPP; 784 } 785 #endif 786 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org