Module Name:    src
Committed By:   nia
Date:           Wed Jun  2 06:48:10 UTC 2021

Modified Files:
        src/sys/arch/x86/x86: tsc.c

Log Message:
when warning about TSC going backwards, provide advice to the sysadmin.


To generate a diff of this commit:
cvs rdiff -u -r1.55 -r1.56 src/sys/arch/x86/x86/tsc.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

Modified files:

Index: src/sys/arch/x86/x86/tsc.c
diff -u src/sys/arch/x86/x86/tsc.c:1.55 src/sys/arch/x86/x86/tsc.c:1.56
--- src/sys/arch/x86/x86/tsc.c:1.55	Tue Jun  1 21:29:24 2021
+++ src/sys/arch/x86/x86/tsc.c	Wed Jun  2 06:48:10 2021
@@ -1,4 +1,4 @@
-/*	$NetBSD: tsc.c,v 1.55 2021/06/01 21:29:24 riastradh Exp $	*/
+/*	$NetBSD: tsc.c,v 1.56 2021/06/02 06:48:10 nia Exp $	*/
 
 /*-
  * Copyright (c) 2008, 2020 The NetBSD Foundation, Inc.
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: tsc.c,v 1.55 2021/06/01 21:29:24 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: tsc.c,v 1.56 2021/06/02 06:48:10 nia Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -427,7 +427,8 @@ tsc_get_timecount(struct timecounter *tc
 			ticks = getticks();
 			if (ticks - lastwarn >= hz) {
 				printf(
-				    "WARNING: TSC time went backwards by %u\n",
+				    "WARNING: TSC time went backwards by %u - "
+				    "change sysctl(7) kern.timecounter?\n",
 				    (unsigned)(prev - cur));
 				lastwarn = ticks;
 			}

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