[src/trunk]: src/sys/kern Don't dump the CPU topology in the uninspiring case...

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

details:   https://anonhg.NetBSD.org/src/rev/fdea26b24fce
branches:  trunk
changeset: 939012:fdea26b24fce
user:      simonb <simonb%NetBSD.org@localhost>
date:      Wed Sep 23 12:05:16 2020 +0000

description:
Don't dump the CPU topology in the uninspiring case of a single CPU.

diffstat:

 sys/kern/subr_cpu.c |  7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diffs (28 lines):

diff -r 9d8141354a90 -r fdea26b24fce sys/kern/subr_cpu.c
--- a/sys/kern/subr_cpu.c       Wed Sep 23 10:48:12 2020 +0000
+++ b/sys/kern/subr_cpu.c       Wed Sep 23 12:05:16 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: subr_cpu.c,v 1.15 2020/06/11 22:21:05 ad Exp $ */
+/*     $NetBSD: subr_cpu.c,v 1.16 2020/09/23 12:05:16 simonb Exp $     */
 
 /*-
  * Copyright (c) 2007, 2008, 2009, 2010, 2012, 2019, 2020
@@ -61,7 +61,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: subr_cpu.c,v 1.15 2020/06/11 22:21:05 ad Exp $");
+__KERNEL_RCSID(0, "$NetBSD: subr_cpu.c,v 1.16 2020/09/23 12:05:16 simonb Exp $");
 
 #include <sys/param.h>
 #include <sys/atomic.h>
@@ -203,6 +203,9 @@
        int i;
 
        CTASSERT(__arraycount(names) >= __arraycount(ci->ci_sibling));
+       if (ncpu == 1) {
+               return;
+       }
 
        for (CPU_INFO_FOREACH(cii, ci)) {
                if (cpu_topology_haveslow)