> However, the exited-leader case is a real limitation for profilers. > OpenTelemetry eBPF Profiler wants to profile a process where the main thread > has exited but secondary threads are still running [2]. > [2] https://github.com/open-telemetry/opentelemetry-ebpf-profiler/pull/376 > > Using plain TIDs (flags=0) would work, but it means users cannot use > PROCESS_VM_PIDFD in this scenario. > > What do you think this patch should do? I see two options: > - Address this limitation in a separate future patch that fixes > pidfd_get_task() to use PIDTYPE_PID when PIDFD_THREAD is detected in > f_flags, benefiting all callers (process_vm_readv, process_madvise, > and any future users).
Extending it consistently for that scenario seems like the right thing to do? @Christian? -- Cheers, David
