Messages in this thread | | | Date | Fri, 12 Nov 2010 11:37:45 +0100 | From | Linus Walleij <> | Subject | Re: [PATCH] RFC: nomadik: expand timesource to 63 bits |
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Thomas Gleixner wrote: > On Fri, 12 Nov 2010, Linus Walleij wrote: >> Uwe Kleine-König wrote: >> >>> Instead of implementing sched_clock for each architecture seperatly, >>> wouldn't it be nice to have a generic sched_clock that uses the >>> architecture's clocksource? I tried to implement that some time ago, >>> but tglx shoot it down because of locking problems. >> I was and still am a big fan of this approach, I am willing to help >> testing it if you want to dust off this patch set... > > sched_clock is not necessarily the same as the current clocksource.
IIRC Uwe:s approach was that if and only if you would want to use the clocksource for sched_clock() you provide a special flag on the clocksource, and it will be attempted to be used for sched_clock().
Incidentally the dual use of a single free-running timer as both single clocksource and sched_clock() baseline seem to creep up in a lot of embedded platforms...
Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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