Messages in this thread | ![/](/images/icornerl.gif) | | Date | Mon, 15 Nov 2010 15:06:33 +0100 | From | Andi Kleen <> | Subject | Re: [PATCHv2 2/2] tracing,mm - add kernel pagefault tracepoint for x86 & x86_64 |
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> Actually I don't see any reason right now to trace only kernel faults. Do you? > If that's needed, one can still check on post-processing that the address > was in the kernel.
I think the idea is to get more context on oopses. If the event only covers that the overhead in the common case (minus *_user) is much less, versus the more generalized points you use.
For tracing the whole page fault me think it's better to have a generalized exception tracer with a filter on page fault.
-Andi
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