svn commit: r216161 - in head/sys: amd64/amd64 i386/i386

[Jung-uk Kim]

Author: jkim
Date: Fri Dec  3 21:54:10 2010
New Revision: 216161
URL: http://svn.freebsd.org/changeset/base/216161

Log:
  Explicitly initialize TSC frequency.  To calibrate TSC frequency, we use
  DELAY(9) and it may use TSC in turn if TSC frequency is non-zero.
  
  MFC after:	3 days

Modified:
  head/sys/amd64/amd64/tsc.c
  head/sys/i386/i386/tsc.c

Modified: head/sys/amd64/amd64/tsc.c
==============================================================================
--- head/sys/amd64/amd64/tsc.c	Fri Dec  3 21:52:01 2010	(r216160)
+++ head/sys/amd64/amd64/tsc.c	Fri Dec  3 21:54:10 2010	(r216161)
@@ -46,7 +46,7 @@ __FBSDID("$FreeBSD$");
 
 #include "cpufreq_if.h"
 
-uint64_t	tsc_freq;
+uint64_t	tsc_freq = 0;
 int		tsc_is_broken;
 int		tsc_is_invariant;
 static eventhandler_tag tsc_levels_tag, tsc_pre_tag, tsc_post_tag;

Modified: head/sys/i386/i386/tsc.c
==============================================================================
--- head/sys/i386/i386/tsc.c	Fri Dec  3 21:52:01 2010	(r216160)
+++ head/sys/i386/i386/tsc.c	Fri Dec  3 21:54:10 2010	(r216161)
@@ -46,7 +46,7 @@ __FBSDID("$FreeBSD$");
 
 #include "cpufreq_if.h"
 
-uint64_t	tsc_freq;
+uint64_t	tsc_freq = 0;
 int		tsc_is_broken;
 int		tsc_is_invariant;
 u_int		tsc_present;