Messages in this thread | | | From | Andi Kleen <> | Subject | Re: [RFC] [Patch 7/8] statistics infrastructure - exploitation prerequisite | Date | Wed, 17 May 2006 03:27:51 +0200 |
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> Anrd> - do_gettimeofday > Anrd> potentially slow, reliable TOD clock, microsecond resolution > > Slow, not necessarily safe to call in IRQ context.
It's only slow if the platform can't do better. On good hardware it is fast. And yes it is safe to call in IRQ context. Networking does that all the time.
If the hardware doesn't have a good working timer for gettimeofday then everything else will be also slow.
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