Author: jkim
Date: Mon Mar 14 23:30:14 2011
New Revision: 219653
URL: http://svn.freebsd.org/changeset/base/219653
Log:
Make get_cyclecount(9) little bit more useful where binuptime(9) is used.
Modified:
head/sys/arm/include/cpu.h
head/sys/i386/include/cpu.h
Modified: head/sys/arm/include/cpu.h
==============================================================================
--- head/sys/arm/include/cpu.h Mon Mar 14 23:19:04 2011 (r219652)
+++ head/sys/arm/include/cpu.h Mon Mar 14 23:30:14 2011 (r219653)
@@ -16,7 +16,7 @@ get_cyclecount(void)
struct bintime bt;
binuptime(&bt);
- return (bt.frac ^ bt.sec);
+ return ((uint64_t)bt.sec << 56 | bt.frac >> 8);
}
#endif
Modified: head/sys/i386/include/cpu.h
==============================================================================
--- head/sys/i386/include/cpu.h Mon Mar 14 23:19:04 2011 (r219652)
+++ head/sys/i386/include/cpu.h Mon Mar 14 23:30:14 2011 (r219653)
@@ -67,7 +67,7 @@ void swi_vm(void *);
* Return contents of in-cpu fast counter as a sort of "bogo-time"
* for random-harvesting purposes.
*/
-static __inline u_int64_t
+static __inline uint64_t
get_cyclecount(void)
{
#if defined(I486_CPU) || defined(KLD_MODULE)
@@ -75,7 +75,7 @@ get_cyclecount(void)
if (!tsc_present) {
binuptime(&bt);
- return (bt.frac ^ bt.sec);
+ return ((uint64_t)bt.sec << 56 | bt.frac >> 8);
}
#endif
return (rdtsc());
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