1 /* 2 * include/linux/eventfd.h 3 * 4 * Copyright (C) 2007 Davide Libenzi <[email protected]> 5 * 6 */ 7 8 #ifndef _LINUX_EVENTFD_H 9 #define _LINUX_EVENTFD_H 10 11 #ifdef CONFIG_EVENTFD 12 13 /* For O_CLOEXEC and O_NONBLOCK */ 14 #include <linux/fcntl.h> 15 16 /* Flags for eventfd2. */ 17 #define EFD_CLOEXEC O_CLOEXEC 18 #define EFD_NONBLOCK O_NONBLOCK 19 20 struct file *eventfd_fget(int fd); 21 int eventfd_signal(struct file *file, int n); 22 23 #else /* CONFIG_EVENTFD */ 24 25 #define eventfd_fget(fd) ERR_PTR(-ENOSYS) 26 static inline int eventfd_signal(struct file *file, int n) 27 { return 0; } 28 29 #endif /* CONFIG_EVENTFD */ 30 31 #endif /* _LINUX_EVENTFD_H */ 32 33