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  */
  19 static 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
  25 extern void signalfd_cleanup(struct sighand_struct *sighand);
  26
  27 #else /* CONFIG_SIGNALFD */
  28
  29 static inline void signalfd_notify(struct task_struct *tsk, int sig) { }
  30
  31 static inline void signalfd_cleanup(struct sighand_struct *sighand) { }
  32
  33 #endif /* CONFIG_SIGNALFD */
  34
  35 #endif /* _LINUX_SIGNALFD_H */