Re: [patch] fix the softlockup watchdog to actually work

[Ingo Molnar]

* Jeremy Fitzhardinge <jeremy@xxxxxxxx> wrote:

> How reliable does it need to be?  All we need is to measure "about 10 
> seconds"; if we can't get that out of it, how can it be good for 
> anything else?

sched_clock(), as its name suggests it, is meant for the scheduler's 
use. The scheduler generally only needs to measure time when the CPU is 
busy - not across idle periods. So sched_clock() can (and will) break 
across certain types of ACPI idle methods.

	Ingo
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