Messages in this thread | | | Date | Tue, 11 Mar 2003 21:57:40 -0500 | From | Jim Houston <> | Subject | Re: [RFC][PATCH] linux-2.5.64_monotonic-clock_A1 |
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Hi John,
I like the idea of making the monotonic clock use the same mechanism as the normal timeofday clock.
When I was doing my alternative Posix timers patch, I modified your get_offset() mechanism to return nanoseconds and added a "struct time_spec ytime" which was updated in the same place as xtime but was never set.
You might have a look at my patch archived here: http://marc.theaimsgroup.com/?l=linux-kernel&m=104006731324824&w=2
Look for the function do_gettime_sinceboot_ns(). You don't have to keep the monotonic time in cycles. It would be nice if the timeofday clock was defined as the monotonic clock + an offset.
Also, if I had one of those cyclone counters, I would never look at the PIT again.
Jim Houston - Concurrent Computer Corp. - 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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