[src/trunk]: src/sys/kern don't create ktrace records if we were not asked.

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/cf037cd36127
branches:  trunk
changeset: 344591:cf037cd36127
user:      christos <christos%NetBSD.org@localhost>
date:      Wed Apr 06 03:11:31 2016 +0000

description:
don't create ktrace records if we were not asked.

diffstat:

 sys/kern/kern_sig.c |  9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)

diffs (30 lines):

diff -r bc8f1d6c1a20 -r cf037cd36127 sys/kern/kern_sig.c
--- a/sys/kern/kern_sig.c       Wed Apr 06 00:52:45 2016 +0000
+++ b/sys/kern/kern_sig.c       Wed Apr 06 03:11:31 2016 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: kern_sig.c,v 1.324 2016/04/06 00:48:30 christos Exp $  */
+/*     $NetBSD: kern_sig.c,v 1.325 2016/04/06 03:11:31 christos Exp $  */
 
 /*-
  * Copyright (c) 2006, 2007, 2008 The NetBSD Foundation, Inc.
@@ -70,7 +70,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: kern_sig.c,v 1.324 2016/04/06 00:48:30 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: kern_sig.c,v 1.325 2016/04/06 03:11:31 christos Exp $");
 
 #include "opt_ptrace.h"
 #include "opt_dtrace.h"
@@ -896,7 +896,10 @@
                l->l_ru.ru_nsignals++;
                kpsendsig(l, ksi, mask);
                mutex_exit(p->p_lock);
-               ktrpsig(signo, SIGACTION_PS(ps, signo).sa_handler, mask, ksi);
+               if (ktrpoint(KTR_PSIG)) {
+                       ktrpsig(signo, SIGACTION_PS(ps, signo).sa_handler,
+                           mask, ksi);
+               }
        } else {
                /* XXX for core dump/debugger */
                p->p_sigctx.ps_lwp = l->l_lid;