include/linux/eventfd.h

   1 /*
   2  *  include/linux/eventfd.h
   3  *
   4  *  Copyright (C) 2007  Davide Libenzi <davidel@xmailserver.org>
   5  *
   6  */
   7
   8 #ifndef _LINUX_EVENTFD_H
   9 #define _LINUX_EVENTFD_H
  10
  11 #ifdef CONFIG_EVENTFD
  12
  13 struct file *eventfd_fget(int fd);
  14 int eventfd_signal(struct file *file, int n);
  15
  16 #else /* CONFIG_EVENTFD */
  17
  18 #define eventfd_fget(fd) ERR_PTR(-ENOSYS)
  19 static inline int eventfd_signal(struct file *file, int n)
  20 { return 0; }
  21
  22 #endif /* CONFIG_EVENTFD */
  23
  24 #endif /* _LINUX_EVENTFD_H */
  25