Hi Yonghong, [auto build test ERROR on net-next/master]
url: https://github.com/0day-ci/linux/commits/Yonghong-Song/bpf-add-two-helpers-to-read-perf-event-enabled-running-time/20170919-134113 config: m68k-allyesconfig (attached as .config) compiler: m68k-linux-gcc (GCC) 4.9.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=m68k All errors (new ones prefixed by >>): kernel/bpf/arraymap.c: In function 'perf_event_fd_array_get_ptr': >> kernel/bpf/arraymap.c:495:6: error: too many arguments to function >> 'perf_event_read_local' if (perf_event_read_local(event, &value, NULL, NULL) == -EOPNOTSUPP) ^ In file included from kernel/bpf/arraymap.c:18:0: include/linux/perf_event.h:1290:19: note: declared here static inline int perf_event_read_local(struct perf_event *event, u64 *value) ^ vim +/perf_event_read_local +495 kernel/bpf/arraymap.c 480 481 static void *perf_event_fd_array_get_ptr(struct bpf_map *map, 482 struct file *map_file, int fd) 483 { 484 struct bpf_event_entry *ee; 485 struct perf_event *event; 486 struct file *perf_file; 487 u64 value; 488 489 perf_file = perf_event_get(fd); 490 if (IS_ERR(perf_file)) 491 return perf_file; 492 493 ee = ERR_PTR(-EOPNOTSUPP); 494 event = perf_file->private_data; > 495 if (perf_event_read_local(event, &value, NULL, NULL) == > -EOPNOTSUPP) 496 goto err_out; 497 498 ee = bpf_event_entry_gen(perf_file, map_file); 499 if (ee) 500 return ee; 501 ee = ERR_PTR(-ENOMEM); 502 err_out: 503 fput(perf_file); 504 return ee; 505 } 506 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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