Notify parent of stopped/continued state change
void do_notify_parent_cldstop(struct task_struct * tsk, bool for_ptracer, int why);
tsk
task reporting the state change
for_ptracer
the notification is for ptracer
why
CLD_{CONTINUED|STOPPED|TRAPPED} to report
Notify tsk's parent that the stopped/continued state has changed. If for_ptracer is false, tsk's group leader notifies to its real parent. If true, tsk reports to tsk->parent which should be the ptracer.
Must be called with tasklist_lock at least read locked.