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;
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