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author | jhb <jhb@FreeBSD.org> | 2008-09-24 18:47:24 +0000 |
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committer | jhb <jhb@FreeBSD.org> | 2008-09-24 18:47:24 +0000 |
commit | 8d01b3e526211bb7a97d75c934a16413164f2b81 (patch) | |
tree | 6df27e846b81bfee544bff0f0fe7ad4f8896775f /sys/kern/subr_witness.c | |
parent | d652830aef6bca57c9b5b003875f4e135151573f (diff) | |
download | FreeBSD-src-8d01b3e526211bb7a97d75c934a16413164f2b81.zip FreeBSD-src-8d01b3e526211bb7a97d75c934a16413164f2b81.tar.gz |
Update description of witness_watch.
Diffstat (limited to 'sys/kern/subr_witness.c')
-rw-r--r-- | sys/kern/subr_witness.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/sys/kern/subr_witness.c b/sys/kern/subr_witness.c index 9cdad8d..e9d820e 100644 --- a/sys/kern/subr_witness.c +++ b/sys/kern/subr_witness.c @@ -376,9 +376,11 @@ static void witness_list_lock(struct lock_instance *instance); SYSCTL_NODE(_debug, OID_AUTO, witness, CTLFLAG_RW, 0, "Witness Locking"); /* - * If set to 0, witness is disabled. Otherwise witness performs full lock order - * checking for all locks. At runtime, witness is allowed to be turned off. - * witness is not allowed be turned on once it is turned off, however. + * If set to 0, lock order checking is disabled. If set to -1, + * witness is completely disabled. Otherwise witness performs full + * lock order checking for all locks. At runtime, lock order checking + * may be toggled. However, witness cannot be reenabled once it is + * completely disabled. */ static int witness_watch = 1; TUNABLE_INT("debug.witness.watch", &witness_watch); |