tracehook_notify_jctl — report about job control stop/continue
int tracehook_notify_jctl ( | int notify, |
int why); |
This is called when we might call do_notify_parent_cldstop.
notify is zero if we would not ordinarily send a SIGCHLD,
or is the CLD_STOPPED or CLD_CONTINUED .si_code for SIGCHLD.
why is CLD_STOPPED when about to stop for job control;
we are already in TASK_STOPPED state, about to call schedule.
It might also be that we have just exited (check PF_EXITING),
but need to report that a group-wide stop is complete.
why is CLD_CONTINUED when waking up after job control stop and
ready to make a delayed notify report.
Return the CLD_* value for SIGCHLD, or zero to generate no signal.
Called with the siglock held.