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, 4 insertions, 2 deletions

diff --git a/sys/kern/posix4_mib.c b/sys/kern/posix4_mib.c
index ee4485f10701..4a9634522ee0 100644
--- a/sys/kern/posix4_mib.c
+++ b/sys/kern/posix4_mib.c
@@ -62,7 +62,8 @@ SYSCTL_DECL(_p1003_1b);
 	SYSCTL_INT(_p1003_1b, num, name, CTLFLAG_RD | CTLFLAG_CAPRD, \
 	facility + num - 1, 0, "");
 #define P1B_SYSCTL_RW(num, name)  \
-	SYSCTL_PROC(_p1003_1b, num, name, CTLTYPE_INT | CTLFLAG_RW, NULL, num, \
+	SYSCTL_PROC(_p1003_1b, num, name, \
+	    CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, NULL, num, \
 	    p31b_sysctl_proc, "I", "");
 
 #else
@@ -75,7 +76,8 @@ SYSCTL_DECL(_kern_p1003_1b);
 #define P1B_SYSCTL_RW(num, name)  \
 	SYSCTL_PROC(_p1003_1b, OID_AUTO, name, CTLTYPE_INT | CTLFLAG_RW, NULL, \
 	    num, p31b_sysctl_proc, "I", "");
-SYSCTL_NODE(_kern, OID_AUTO, p1003_1b, CTLFLAG_RW, 0, "P1003.1B");
+SYSCTL_NODE(_kern, OID_AUTO, p1003_1b, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
+    "P1003.1B");
 
 #endif