diff options
Diffstat (limited to 'include/linux/signalfd.h')
| -rw-r--r-- | include/linux/signalfd.h | 40 |
1 files changed, 4 insertions, 36 deletions
diff --git a/include/linux/signalfd.h b/include/linux/signalfd.h index 51042949569..4c9ff0910ae 100644 --- a/include/linux/signalfd.h +++ b/include/linux/signalfd.h @@ -45,49 +45,17 @@ struct signalfd_siginfo { #ifdef CONFIG_SIGNALFD /* - * Deliver the signal to listening signalfd. This must be called - * with the sighand lock held. Same are the following that end up - * calling signalfd_deliver(). - */ -void signalfd_deliver(struct task_struct *tsk, int sig); - -/* - * No need to fall inside signalfd_deliver() if no signal listeners - * are available. + * Deliver the signal to listening signalfd. */ static inline void signalfd_notify(struct task_struct *tsk, int sig) { - if (unlikely(!list_empty(&tsk->sighand->signalfd_list))) - signalfd_deliver(tsk, sig); -} - -/* - * The signal -1 is used to notify the signalfd that the sighand - * is on its way to be detached. - */ -static inline void signalfd_detach_locked(struct task_struct *tsk) -{ - if (unlikely(!list_empty(&tsk->sighand->signalfd_list))) - signalfd_deliver(tsk, -1); -} - -static inline void signalfd_detach(struct task_struct *tsk) -{ - struct sighand_struct *sighand = tsk->sighand; - - if (unlikely(!list_empty(&sighand->signalfd_list))) { - spin_lock_irq(&sighand->siglock); - signalfd_deliver(tsk, -1); - spin_unlock_irq(&sighand->siglock); - } + if (unlikely(waitqueue_active(&tsk->sighand->signalfd_wqh))) + wake_up(&tsk->sighand->signalfd_wqh); } #else /* CONFIG_SIGNALFD */ -#define signalfd_deliver(t, s) do { } while (0) -#define signalfd_notify(t, s) do { } while (0) -#define signalfd_detach_locked(t) do { } while (0) -#define signalfd_detach(t) do { } while (0) +static inline void signalfd_notify(struct task_struct *tsk, int sig) { } #endif /* CONFIG_SIGNALFD */ |