Author: hselasky
Date: Tue Mar 24 17:42:53 2015
New Revision: 280450
URL: https://svnweb.freebsd.org/changeset/base/280450
Log:
Make sure tunable sysctls are only fetched once. The existing code can
re-register sysctls when destroying sysctl contexts or when moving
sysctls from one tree to another.
Modified:
head/sys/kern/kern_sysctl.c
Modified: head/sys/kern/kern_sysctl.c
==============================================================================
--- head/sys/kern/kern_sysctl.c Tue Mar 24 17:37:31 2015 (r280449)
+++ head/sys/kern/kern_sysctl.c Tue Mar 24 17:42:53 2015 (r280450)
@@ -353,6 +353,9 @@ sysctl_register_oid(struct sysctl_oid *o
#endif
(oidp->oid_kind & CTLFLAG_TUN) != 0 &&
(oidp->oid_kind & CTLFLAG_NOFETCH) == 0) {
+ /* only fetch value once */
+ oidp->oid_kind |= CTLFLAG_NOFETCH;
+ /* try to fetch value from kernel environment */
sysctl_load_tunable_by_oid_locked(oidp);
}
}
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