ioctl(2) The following commands are supported: TFD_IOC_SET_TICKS to adjust the number of the timer expirations that have occurred. It take a pointer to nonzero 8-byte integer (uint64_t*) containing 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 CONFIG_CHECKPOINT_RESTORE support. Signed-off-by: Cyrill Gorcunov <gorcunov@xxxxxxxxxx> CC: Michael Kerrisk <mtk.manpages@xxxxxxxxx> CC: Thomas Gleixner <tglx@xxxxxxxxxxxxx> CC: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> CC: Andrey Vagin <avagin@xxxxxxxxxx> CC: Pavel Emelyanov <xemul@xxxxxxxxxxxxx> CC: Vladimir Davydov <vdavydov@xxxxxxxxxxxxx> CC: linux-api@xxxxxxxxxxxxxxx --- man2/timerfd_create.2 | 14 ++++++++++++++ 1 file changed, 14 insertions(+) Index: man-pages/man2/timerfd_create.2 =================================================================== --- man-pages.orig/man2/timerfd_create.2 +++ man-pages/man2/timerfd_create.2 @@ -260,6 +260,20 @@ 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 -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
