LXR linux/include/linux/signalfd.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 *  include/linux/signalfd.h
   4 *
   5 *  Copyright (C) 2007  Davide Libenzi <davidel@xmailserver.org>
   6 *
   7 */
   8#ifndef _LINUX_SIGNALFD_H
   9#define _LINUX_SIGNALFD_H
  10
  11#include <uapi/linux/signalfd.h>
  12#include <linux/sched/signal.h>
  13
  14#ifdef CONFIG_SIGNALFD
  15
  16/*
  17 * Deliver the signal to listening signalfd.
  18 */
  19static inline void signalfd_notify(struct task_struct *tsk, int sig)
  20{
  21        if (unlikely(waitqueue_active(&tsk->sighand->signalfd_wqh)))
  22                wake_up(&tsk->sighand->signalfd_wqh);
  23}
  24
  25extern void signalfd_cleanup(struct sighand_struct *sighand);
  26
  27#else /* CONFIG_SIGNALFD */
  28
  29static inline void signalfd_notify(struct task_struct *tsk, int sig) { }
  30
  31static inline void signalfd_cleanup(struct sighand_struct *sighand) { }
  32
  33#endif /* CONFIG_SIGNALFD */
  34
  35#endif /* _LINUX_SIGNALFD_H */
  36