From: Dmitry Torokhov <dtor_core@ameritech.net>

I noticed that although timer_tsc registers cpufreq notifier to detect
frequency changes and adjust cpu_khz it does not set cyc2ns_scale.



 arch/i386/kernel/timers/timer_tsc.c |    1 +
 1 files changed, 1 insertion(+)

diff -puN arch/i386/kernel/timers/timer_tsc.c~timer_tsc-cyc2ns_scale-fix arch/i386/kernel/timers/timer_tsc.c
--- 25/arch/i386/kernel/timers/timer_tsc.c~timer_tsc-cyc2ns_scale-fix	2003-09-05 01:43:32.000000000 -0700
+++ 25-akpm/arch/i386/kernel/timers/timer_tsc.c	2003-09-05 01:43:32.000000000 -0700
@@ -312,6 +312,7 @@ time_cpufreq_notifier(struct notifier_bl
 		if (use_tsc) {
 			fast_gettimeoffset_quotient = cpufreq_scale(fast_gettimeoffset_ref, freq->new, ref_freq);
 			cpu_khz = cpufreq_scale(cpu_khz_ref, ref_freq, freq->new);
+			set_cyc2ns_scale(cpu_khz/1000);
 		}
 #endif
 	}

_