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Mathieu Desnoyers dacb16b1a0 [PATCH] i386 and x86_64 TSC set_cyc2ns_scale imprecision ... I just found out that some precision is unnecessarily lost in the arch/i386/kernel/timers/timer_tsc.c:set_cyc2ns_scale function. It uses a cpu_mhz parameter when it could use a cpu_khz. In the specific case of an Intel P4 running at 3001.171 Mhz, the truncation to 3001 Mhz leads to an imprecision of 19 microseconds per second : this is very sad for a timer with nearly nanosecond accuracy. Fix the x86_64 architecture too. Cc: george anzinger <george@mvista.com> Cc: john stultz <johnstul@us.ibm.com> Cc: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		20 years ago
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Makefile	…
common.c	…
timer.c	…
timer_cyclone.c	…
timer_hpet.c	[PATCH] i386 and x86_64 TSC set_cyc2ns_scale imprecision	20 years ago
timer_none.c	…
timer_pit.c	…
timer_pm.c	…
timer_tsc.c	[PATCH] i386 and x86_64 TSC set_cyc2ns_scale imprecision	20 years ago