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__group_complete_signal: eliminate unneeded wakeup of ->group_exit_task 

Cleanup.  __group_complete_signal() wakes up ->group_exit_task twice.  The
second wakeup's state includes TASK_UNINTERRUPTIBLE, which is not very
appropriate.

Change the code to pass the "correct" argument to signal_wake_up() and kill
now unneeded wake_up_process().

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Oleg Nesterov 2007-10-16 23:27:00 -07:00 committed by Linus Torvalds
parent 442a10cf9e
commit 18442cf28a
1 changed files with 4 additions and 7 deletions
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11
kernel/signal.c
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@ -909,8 +909,7 @@ __group_complete_signal(int sig, struct task_struct *p)
do {
sigaddset(&t->pending.signal, SIGKILL);
signal_wake_up(t, 1);
t = next_thread(t);
} while (t != p);
} while_each_thread(p, t);
return;
}
@ -928,13 +927,11 @@ __group_complete_signal(int sig, struct task_struct *p)
rm_from_queue(SIG_KERNEL_STOP_MASK, &p->signal->shared_pending);
p->signal->group_stop_count = 0;
p->signal->group_exit_task = t;
t = p;
p = t;
do {
p->signal->group_stop_count++;
signal_wake_up(t, 0);
t = next_thread(t);
} while (t != p);
wake_up_process(p->signal->group_exit_task);
signal_wake_up(t, t == p);
} while_each_thread(p, t);
return;
}