772                                     int *pfd)  in bpf_attach_tracing_event()  argument
780   if (*pfd < 0) {  in bpf_attach_tracing_event()
808     *pfd = syscall(__NR_perf_event_open, &attr, pid, cpu, -1 /* group_fd */, PERF_FLAG_FD_CLOEXEC);  in bpf_attach_tracing_event()
809     if (*pfd < 0) {  in bpf_attach_tracing_event()
815   if (ioctl(*pfd, PERF_EVENT_IOC_SET_BPF, progfd) < 0) {  in bpf_attach_tracing_event()
819   if (ioctl(*pfd, PERF_EVENT_IOC_ENABLE, 0) < 0) {  in bpf_attach_tracing_event()
830   int kfd, pfd = -1;  in bpf_attach_kprobe()  local
836   pfd = bpf_try_perf_event_open_with_probe(fn_name, fn_offset, -1, event_type,  in bpf_attach_kprobe()
840   if (pfd < 0) {  in bpf_attach_kprobe()
873   if (bpf_attach_tracing_event(progfd, buf, -1 /* PID */, &pfd) == 0)  in bpf_attach_kprobe()
874     return pfd;  in bpf_attach_kprobe()
877   bpf_close_perf_event_fd(pfd);  in bpf_attach_kprobe()
950   int res, kfd = -1, pfd = -1, ns_fd = -1;  in bpf_attach_uprobe()  local
952   pfd = bpf_try_perf_event_open_with_probe(binary_path, offset, pid, event_type,  in bpf_attach_uprobe()
956   if (pfd < 0) {  in bpf_attach_uprobe()
993   if (bpf_attach_tracing_event(progfd, buf, pid, &pfd) == 0)  in bpf_attach_uprobe()
994     return pfd;  in bpf_attach_uprobe()
1000   bpf_close_perf_event_fd(pfd);  in bpf_attach_uprobe()
1087   int pfd = -1;  in bpf_attach_tracepoint()  local
1091   if (bpf_attach_tracing_event(progfd, buf, -1 /* PID */, &pfd) == 0)  in bpf_attach_tracepoint()
1092     return pfd;  in bpf_attach_tracepoint()
1094   bpf_close_perf_event_fd(pfd);  in bpf_attach_tracepoint()
1124   int pfd;  in bpf_open_perf_buffer()  local
1137   pfd = syscall(__NR_perf_event_open, &attr, pid, cpu, -1, PERF_FLAG_FD_CLOEXEC);  in bpf_open_perf_buffer()
1138   if (pfd < 0) {  in bpf_open_perf_buffer()
1143   perf_reader_set_fd(reader, pfd);  in bpf_open_perf_buffer()
1148   if (ioctl(pfd, PERF_EVENT_IOC_ENABLE, 0) < 0) {  in bpf_open_perf_buffer()