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| author |   Sage Weil <sage@inktank.com> | 2013-08-15 11:11:45 -0700 |
|---|---|---|
| committer | Sage Weil <sage@inktank.com> | 2013-08-15 11:11:45 -0700 |
| commit | ee3e542fec6e69bc9fb668698889a37d93950ddf (patch) | |
| tree | e74ee766a4764769ef1d3d45d266b4dea64101d3 /include/linux/pvclock_gtod.h | |
| parent | ceph: Remove bogus check in invalidatepage (diff) | |
| parent | Merge branch 'akpm' (patches from Andrew Morton) (diff) | |
| download | wireguard-linux-ee3e542fec6e69bc9fb668698889a37d93950ddf.tar.xz wireguard-linux-ee3e542fec6e69bc9fb668698889a37d93950ddf.zip | |
Merge remote-tracking branch 'linus/master' into testing
Diffstat (limited to 'include/linux/pvclock_gtod.h')
| -rw-r--r-- | include/linux/pvclock_gtod.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/pvclock_gtod.h b/include/linux/pvclock_gtod.h index 0ca75825b60d..a71d2dbd3610 100644 --- a/include/linux/pvclock_gtod.h +++ b/include/linux/pvclock_gtod.h @@ -3,6 +3,13 @@ #include <linux/notifier.h> +/* + * The pvclock gtod notifier is called when the system time is updated + * and is used to keep guest time synchronized with host time. + * + * The 'action' parameter in the notifier function is false (0), or + * true (non-zero) if system time was stepped. + */ extern int pvclock_gtod_register_notifier(struct notifier_block *nb); extern int pvclock_gtod_unregister_notifier(struct notifier_block *nb); |