Ingo Molnar wrote:
> no, the return value after idling can be completely random on some
> boxes, on a 64-bit scale - triggering the softlockup watchdog randomly.
> (some boxes return random TSC values, etc.) Again, it's fine for the
> scheduler's purpose, that's why i named it sched_clock().
>
> the proper clocksource use within the kernel is ktime_get() [or
> ktime_get_ts()]. Do not abuse sched_clock() for such things.
Well, my observation is that both softlockup and the scheduler really
want to measure unstolen time, so it seemed to me that sched_clock was a
nice common place to implement that, rather than implementing a whole
new time interface. At the time that seemed OK, and nobody had any
objections.
But it's a bit beside the point unless it does turn out to be making
Andrew's Vaio sad.
J
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