diff options
Diffstat (limited to 'kernel/include/linux/timerfd.h')
| -rw-r--r-- | kernel/include/linux/timerfd.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/kernel/include/linux/timerfd.h b/kernel/include/linux/timerfd.h new file mode 100644 index 000000000..bd36ce431 --- /dev/null +++ b/kernel/include/linux/timerfd.h @@ -0,0 +1,37 @@ +/* + * include/linux/timerfd.h + * + * Copyright (C) 2007 Davide Libenzi <davidel@xmailserver.org> + * + */ + +#ifndef _LINUX_TIMERFD_H +#define _LINUX_TIMERFD_H + +/* For O_CLOEXEC and O_NONBLOCK */ +#include <linux/fcntl.h> + +/* For _IO helpers */ +#include <linux/ioctl.h> + +/* + * CAREFUL: Check include/asm-generic/fcntl.h when defining + * new flags, since they might collide with O_* ones. We want + * to re-use O_* flags that couldn't possibly have a meaning + * from eventfd, in order to leave a free define-space for + * shared O_* flags. + */ +#define TFD_TIMER_ABSTIME (1 << 0) +#define TFD_TIMER_CANCEL_ON_SET (1 << 1) +#define TFD_CLOEXEC O_CLOEXEC +#define TFD_NONBLOCK O_NONBLOCK + +#define TFD_SHARED_FCNTL_FLAGS (TFD_CLOEXEC | TFD_NONBLOCK) +/* Flags for timerfd_create. */ +#define TFD_CREATE_FLAGS TFD_SHARED_FCNTL_FLAGS +/* Flags for timerfd_settime. */ +#define TFD_SETTIME_FLAGS (TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET) + +#define TFD_IOC_SET_TICKS _IOW('T', 0, u64) + +#endif /* _LINUX_TIMERFD_H */ |