Roland, I think it better to change tracehook definition more, please
see below.
I don't really object to this in principle. But this touches signal.c a
lot more in less obviously-trivial ways than my tracehook patch. That is
more of an issue at the outset than some extra fiddling in the
Now we send SIGCHLD with si_code = CLD_STOPPED twice. By T1 from
do_signal_stop(), and by T1 or T2 from get_signal_to_deliver() which
checks SIGNAL_CLD_MASK.
Yes, I considered this problem. It's just not so big a deal as to worry
overmuch about this corner case in the first version. What
The utrace API itself is not a good fit for global tracing, since its
purpose is tracing and control of individual user threads. There is
no reason to allocate its per-task data structures when you are going
to treat all tasks the same anyway. The points that I think are being
missed are about
