Re: [patch] x86: scale cyc_2_nsec according to CPU frequency

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To: Ingo Molnar <mingo@...>
Cc: Thomas Gleixner <tglx@...>, Stefano Brivio <stefano.brivio@...>, Robert Love <rml@...>, <linux-kernel@...>, Dave Jones <davej@...>, Rafael J. Wysocki <rjw@...>, Michael Buesch <mb@...>, Andrew Morton <akpm@...>
Date: Friday, December 7, 2007 - 10:27 am

Le Fri, 7 Dec 2007 14:55:25 +0100,
Ingo Molnar <mingo@elte.hu> a écrit :


Yes, but a lower quality one. __update_rq_clock tries to compensate
large jumping clocks with a jiffy resolution, while my offset arranges
for a very smooth frequency transition.

I agree with keeping a single offset, but I liked the fact that with my
patch on frequency change, the clock had no jump at all.


I guess this needs to go away if I don't make my point :-(


Pointing it out just to be sure it does not end in the final version ;-)

Thanks for cleaning up my mess ;-)

-- 
Guillaume
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Messages in current thread:
Re: [PATCH] scheduler: fix x86 regression in native_sched_cl..., Guillaume Chazarain, (Fri Dec 7, 3:18 am)
Re: [PATCH] scheduler: fix x86 regression in native_sched_cl..., Guillaume Chazarain, (Fri Dec 7, 4:02 am)
Re: [patch] x86: scale cyc_2_nsec according to CPU frequency, Guillaume Chazarain, (Fri Dec 7, 10:27 am)
Re: [patch] x86: scale cyc_2_nsec according to CPU frequency, Arjan van de Ven, (Sat Dec 8, 11:57 am)
Re: [patch] x86: scale cyc_2_nsec according to CPU frequency, Arjan van de Ven, (Sat Dec 8, 4:18 pm)
Re: [PATCH] scheduler: fix x86 regression in native_sched_cl..., Guillaume Chazarain, (Fri Dec 7, 5:29 am)
Re: [PATCH] scheduler: fix x86 regression in native_sched_cl..., Guillaume Chazarain, (Fri Dec 7, 7:18 am)
Re: [PATCH] scheduler: fix x86 regression in native_sched_cl..., Guillaume Chazarain, (Fri Dec 7, 7:57 am)
Re: [PATCH] scheduler: fix x86 regression in native_sched_cl..., Guillaume Chazarain, (Fri Dec 7, 12:46 pm)
Re: [PATCH] scheduler: fix x86 regression in native_sched_cl..., Guillaume Chazarain, (Sat Dec 8, 7:37 pm)