wait_task_stopped() doesn't need the "delay_group_leader" parameter. If the
child is not traced it must be a group leader. With or without subthreads
->group_stop_count == 0 when the whole task is stopped.
Signed-off-by: Oleg Nesterov <[email protected]>
--- PT/kernel/exit.c~5_ck_group_stop 2007-11-22 19:08:43.000000000 +0300
+++ PT/kernel/exit.c 2007-11-23 20:31:21.000000000 +0300
@@ -1348,7 +1348,7 @@ static int wait_task_zombie(struct task_
* the lock and this task is uninteresting. If we return nonzero, we have
* released the lock and the system call should return.
*/
-static int wait_task_stopped(struct task_struct *p, int delayed_group_leader,
+static int wait_task_stopped(struct task_struct *p,
int noreap, struct siginfo __user *infop,
int __user *stat_addr, struct rusage __user *ru)
{
@@ -1362,8 +1362,7 @@ static int wait_task_stopped(struct task
if (unlikely(!is_task_stopped_or_traced(p)))
goto unlock_sig;
- if (delayed_group_leader && !(p->ptrace & PT_PTRACED) &&
- p->signal->group_stop_count > 0)
+ if (!(p->ptrace & PT_PTRACED) && p->signal->group_stop_count > 0)
/*
* A group stop is in progress and this is the group leader.
* We won't report until all threads have stopped.
@@ -1519,7 +1518,7 @@ repeat:
!(options & WUNTRACED))
continue;
- retval = wait_task_stopped(p, ret == 2,
+ retval = wait_task_stopped(p,
(options & WNOWAIT), infop,
stat_addr, ru);
} else if (p->exit_state == EXIT_ZOMBIE) {
-
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