Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many)

r357614 added CTLFLAG_NEEDGIANT to make it easier to find nodes that are
still not MPSAFE (or already are but aren’t properly marked).
Use it in preparation for a general review of all nodes.

This is non-functional change that adds annotations to SYSCTL_NODE and
SYSCTL_PROC nodes using one of the soon-to-be-required flags.

Mark all obvious cases as MPSAFE.  All entries that haven't been marked
as MPSAFE before are by default marked as NEEDGIANT

Approved by:	kib (mentor, blanket)
Commented by:	kib, gallatin, melifaro
Differential Revision:	https://reviews.freebsd.org/D23718

1 files changed, 8 insertions, 5 deletions

diff --git a/sys/kern/kern_cons.c b/sys/kern/kern_cons.c
index d86c46674834..d840a57332a0 100644
--- a/sys/kern/kern_cons.c
+++ b/sys/kern/kern_cons.c
@@ -360,8 +360,10 @@ sysctl_kern_console(SYSCTL_HANDLER_ARGS)
 	return (error);
 }
 
-SYSCTL_PROC(_kern, OID_AUTO, console, CTLTYPE_STRING|CTLFLAG_RW,
-	0, 0, sysctl_kern_console, "A", "Console device control");
+SYSCTL_PROC(_kern, OID_AUTO, console,
+    CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_NEEDGIANT, 0, 0,
+    sysctl_kern_console, "A",
+    "Console device control");
 
 /*
  * User has changed the state of the console muting.
@@ -378,9 +380,10 @@ sysctl_kern_consmute(SYSCTL_HANDLER_ARGS)
 	return (error);
 }
 
-SYSCTL_PROC(_kern, OID_AUTO, consmute, CTLTYPE_INT|CTLFLAG_RW,
-	0, sizeof(cn_mute), sysctl_kern_consmute, "I",
-	"State of the console muting");
+SYSCTL_PROC(_kern, OID_AUTO, consmute,
+    CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, 0, sizeof(cn_mute),
+    sysctl_kern_consmute, "I",
+    "State of the console muting");
 
 void
 cngrab()