Messages in this thread | | | Date | Tue, 15 Nov 2005 04:49:54 -0200 | From | Marcelo Tosatti <> | Subject | Re: [Patch 1/4] Delay accounting: Initialization |
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On Mon, Nov 14, 2005 at 08:20:17PM -0800, Andrew Morton wrote: > Shailabh Nagar <nagar@watson.ibm.com> wrote: > > > > + *ts = sched_clock(); > > I'm not sure that it's kosher to use sched_clock() for fine-grained > timestamping like this. Ingo had issues with it last time this happened?
If the system boots with use_rtc == 0 you're going to get jiffies based resolution from sched_clock(). I have a 1GHz Pentium 3 around here which does that.
Maybe use do_gettimeofday() for such systems?
Would be nice to have a sort of per-arch overridable "gettime()" function?
> <too lazy to read all the code> Do you normalise these numbers in some > manner before presenting them to userspace? If so, by what means? - 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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