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| author | Cyrill Gorcunov <gorcunov@openvz.org> | 2014-07-16 01:54:55 +0400 |
|---|---|---|
| committer | Michael Kerrisk <mtk.manpages@gmail.com> | 2015-04-18 13:20:39 +0200 |
| commit | 5a3eb9cd35b0ee9e2ae5ef741a79d03f4eb70c3f (patch) | |
| tree | f7b03a073edec084a7492db827f24528223b8e17 | |
| parent | 58d375dd8a15c2a708d6b7db9039e8248559a4d8 (diff) | |
| download | man-pages-5a3eb9cd35b0ee9e2ae5ef741a79d03f4eb70c3f.tar.gz | |
timerfd_create.2: Document TFD_IOC_SET_TICKS ioctl() operation
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
| -rw-r--r-- | man2/timerfd_create.2 | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/man2/timerfd_create.2 b/man2/timerfd_create.2 index 1b1da62444..371591f64f 100644 --- a/man2/timerfd_create.2 +++ b/man2/timerfd_create.2 @@ -267,6 +267,20 @@ multiplexing APIs: and .BR epoll (7). .TP +.BR ioctl "(2)" +The following commands are supported: +.B TFD_IOC_SET_TICKS +to adjust the number of the timer expirations that have occurred. +It take a pointer to nonzero 8-byte integer +.RI ( uint64_t *) +containing the new number of expirations. +Once the number is set any waiter on the timer is woken up. +The only purpose of this command is to restore the expirations +in a sake of checkpoint/restore procedure. +It requires the kernel to be built with +.BR CONFIG_CHECKPOINT_RESTORE +support. +.TP .BR close (2) When the file descriptor is no longer required it should be closed. When all file descriptors associated with the same timer object |