From 6ef341b3569bc8cc194eba807f0ff09c1bb022d1 Mon Sep 17 00:00:00 2001
From: deraadt <deraadt@openbsd.org>
Date: Mon, 19 Jan 2015 01:53:18 +0000
Subject: [PATCH] like in ps(1), fetch the FSCALE value using sysctl rather
 than using the header version ok guenther

---
 usr.bin/top/loadavg.h |  7 ++++++-
 usr.bin/top/machine.c | 17 ++++++++++++++++-
 usr.bin/top/machine.h |  3 ++-
 3 files changed, 24 insertions(+), 3 deletions(-)

diff --git a/usr.bin/top/loadavg.h b/usr.bin/top/loadavg.h
index 0dffd40713a..af1b692a91c 100644
--- a/usr.bin/top/loadavg.h
+++ b/usr.bin/top/loadavg.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: loadavg.h,v 1.3 2002/07/15 17:20:36 deraadt Exp $	*/
+/*	$OpenBSD: loadavg.h,v 1.4 2015/01/19 01:53:18 deraadt Exp $	*/
 
 /*
  *  Top users/processes display for Unix
@@ -56,6 +56,11 @@
 # endif
 #endif
 
+#ifdef __OpenBSD__
+#undef FSCALE
+#define FSCALE fscale		/* fetched via sysctl(3) */
+#endif
+
 #ifdef FSCALE
 # define FIXED_LOADAVG FSCALE
 # define FIXED_PCTCPU FSCALE
diff --git a/usr.bin/top/machine.c b/usr.bin/top/machine.c
index fc87693b614..88969f8ebd0 100644
--- a/usr.bin/top/machine.c
+++ b/usr.bin/top/machine.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: machine.c,v 1.81 2015/01/16 06:40:13 deraadt Exp $	 */
+/* $OpenBSD: machine.c,v 1.82 2015/01/19 01:53:18 deraadt Exp $	 */
 
 /*-
  * Copyright (c) 1994 Thorsten Lockert <tholo@sigmasoft.com>
@@ -138,9 +138,22 @@ static int      pageshift;	/* log base 2 of the pagesize */
 #define pagetok(size) ((size) << pageshift)
 
 int		ncpu;
+int		fscale;
 
 unsigned int	maxslp;
 
+int
+getfscale(void)
+{
+	int mib[] = { CTL_KERN, KERN_FSCALE };
+	size_t size = sizeof(fscale);
+
+	if (sysctl(mib, sizeof(mib) / sizeof(mib[0]),
+	    &fscale, &size, NULL, 0) < 0)
+		return (-1);
+	return fscale;
+}
+
 int
 getncpu(void)
 {
@@ -163,6 +176,8 @@ machine_init(struct statics *statics)
 	ncpu = getncpu();
 	if (ncpu == -1)
 		return (-1);
+	if (getfscale() == -1)
+		return (-1);
 	cpu_states = calloc(ncpu, CPUSTATES * sizeof(int64_t));
 	if (cpu_states == NULL)
 		err(1, NULL);
diff --git a/usr.bin/top/machine.h b/usr.bin/top/machine.h
index 312d382101e..b1eb86ee90b 100644
--- a/usr.bin/top/machine.h
+++ b/usr.bin/top/machine.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: machine.h,v 1.18 2014/09/17 01:56:54 dlg Exp $	 */
+/* $OpenBSD: machine.h,v 1.19 2015/01/19 01:53:18 deraadt Exp $	 */
 
 /*
  *  Top users/processes display for Unix
@@ -95,3 +95,4 @@ extern uid_t    proc_owner(pid_t);
 extern struct kinfo_proc	*getprocs(int, int, int *);
 
 int		getncpu(void);
+int		getfscale(void);
-- 
2.20.1