Messages in this thread | | | From | Andi Kleen <> | Subject | Re: [PATCH] i386 tsc: remove xtime_lock'ing around cpufreq notifier | Date | Thu, 12 Apr 2007 22:15:04 +0200 |
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> They could be huge differences - unbounded, in fact. It would make > printk fairly hard to interpret, I would think. The only benefit to > using sched_clock in printk is that if you're using it to work out the > startup latencies you won't be confused by stolen time. But I think > that's a fairly small benefit compared to the disadvantage of not being > able to meaningfully compare the timestamps on two printk messages.
Ok so the right solution would be a separate printk_clock() that is implemented as the native sched_clock() even on Xen/VMI. Should be a SMOP.
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