40 	int fd, efd, err, id;  in load_and_attach()  local
91 	efd = open(buf, O_RDONLY, 0);  in load_and_attach()
92 	if (efd < 0) {  in load_and_attach()
97 	err = read(efd, buf, sizeof(buf));  in load_and_attach()
103 	close(efd);  in load_and_attach()
109 	efd = perf_event_open(&attr, -1/*pid*/, 0/*cpu*/, -1/*group_fd*/, 0);  in load_and_attach()
110 	if (efd < 0) {  in load_and_attach()
111 		printf("event %d fd %d err %s\n", id, efd, strerror(errno));  in load_and_attach()
114 	event_fd[prog_cnt - 1] = efd;  in load_and_attach()
115 	ioctl(efd, PERF_EVENT_IOC_ENABLE, 0);  in load_and_attach()
116 	ioctl(efd, PERF_EVENT_IOC_SET_BPF, fd);  in load_and_attach()