* Andy Lutomirski: >> I suppose that's fine. Or alternatively, when thread group support is >> added, introduce a flag that applications have to use to enable it, so >> that they can probe for support by checking support for the flag. >> >> I wouldn't be opposed to a new system call like this either: >> >> int procfd_open (pid_t thread_group, pid_t thread_id, unsigned flags); >> >> But I think this is frowned upon on the kernel side. > > I have no problem with it, except that I think it shouldn’t return an > fd that can be used for proc filesystem access. Oh no, my intention was that it would just be used with *_send_signal and related functions. Thanks, Florian