Hi Song, Thank you for the patch! Yet something to improve:
[auto build test ERROR on tip/perf/core] [also build test ERROR on v4.20-rc5 next-20181207] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Song-Liu/perf-bpf-Introduce-PERF_RECORD_BPF_EVENT/20181207-083615 config: i386-randconfig-s3-12051035 (attached as .config) compiler: gcc-6 (Debian 6.4.0-9) 6.4.0 20171026 reproduce: # save the attached .config to linux build tree make ARCH=i386 All errors (new ones prefixed by >>): kernel/events/core.c: In function 'perf_event_bpf_output': >> kernel/events/core.c:7694:2: error: implicit declaration of function >> 'bpf_get_prog_name' [-Werror=implicit-function-declaration] bpf_get_prog_name(bpf_event->prog, name); ^~~~~~~~~~~~~~~~~ kernel/events/core.c: In function 'perf_event_bpf_event_subprog': kernel/events/core.c:7737:12: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] .addr = (u64)prog->bpf_func, ^ cc1: some warnings being treated as errors vim +/bpf_get_prog_name +7694 kernel/events/core.c 7679 7680 static void perf_event_bpf_output(struct perf_event *event, 7681 void *data) 7682 { 7683 struct perf_bpf_event *bpf_event = data; 7684 struct perf_output_handle handle; 7685 struct perf_sample_data sample; 7686 char name[KSYM_NAME_LEN]; 7687 int name_len; 7688 int ret; 7689 7690 if (!perf_event_bpf_match(event)) 7691 return; 7692 7693 /* get prog name and round up to 64 bit aligned */ > 7694 bpf_get_prog_name(bpf_event->prog, name); 7695 name_len = strlen(name) + 1; 7696 while (!IS_ALIGNED(name_len, sizeof(u64))) 7697 name[name_len++] = '\0'; 7698 bpf_event->event_id.len += name_len; 7699 7700 perf_event_header__init_id(&bpf_event->event_id.header, &sample, event); 7701 ret = perf_output_begin(&handle, event, 7702 bpf_event->event_id.header.size); 7703 if (ret) 7704 return; 7705 7706 perf_output_put(&handle, bpf_event->event_id); 7707 7708 __output_copy(&handle, name, name_len); 7709 7710 perf_event__output_id_sample(event, &handle, &sample); 7711 7712 perf_output_end(&handle); 7713 } 7714 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
.config.gz
Description: application/gzip
