diff options
Diffstat (limited to 'kernel/exit.c')
| -rw-r--r-- | kernel/exit.c | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/kernel/exit.c b/kernel/exit.c index f072959fcab7..4f7424523bac 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -733,11 +733,29 @@ static void check_stack_usage(void) static inline void check_stack_usage(void) {} #endif +static void synchronize_group_exit(struct task_struct *tsk, long code) +{ + struct sighand_struct *sighand = tsk->sighand; + struct signal_struct *signal = tsk->signal; + + spin_lock_irq(&sighand->siglock); + signal->quick_threads--; + if ((signal->quick_threads == 0) && + !(signal->flags & SIGNAL_GROUP_EXIT)) { + signal->flags = SIGNAL_GROUP_EXIT; + signal->group_exit_code = code; + signal->group_stop_count = 0; + } + spin_unlock_irq(&sighand->siglock); +} + void __noreturn do_exit(long code) { struct task_struct *tsk = current; int group_dead; + synchronize_group_exit(tsk, code); + WARN_ON(tsk->plug); kcov_task_exit(tsk); @@ -766,7 +784,7 @@ void __noreturn do_exit(long code) #ifdef CONFIG_POSIX_TIMERS hrtimer_cancel(&tsk->signal->real_timer); - exit_itimers(tsk->signal); + exit_itimers(tsk); #endif if (tsk->mm) setmax_mm_hiwater_rss(&tsk->signal->maxrss, tsk->mm); @@ -905,7 +923,7 @@ do_group_exit(int exit_code) exit_code = sig->group_exit_code; else if (sig->group_exec_task) exit_code = 0; - else if (!thread_group_empty(current)) { + else { struct sighand_struct *const sighand = current->sighand; spin_lock_irq(&sighand->siglock); @@ -1051,7 +1069,7 @@ static int wait_task_zombie(struct wait_opts *wo, struct task_struct *p) * p->signal fields because the whole thread group is dead * and nobody can change them. * - * psig->stats_lock also protects us from our sub-theads + * psig->stats_lock also protects us from our sub-threads * which can reap other children at the same time. Until * we change k_getrusage()-like users to rely on this lock * we have to take ->siglock as well. |