On 05/08/2013 11:46 PM, zhangwei(Jovi) wrote:
> On 2013/5/9 14:05, Francis Deslauriers wrote:
>> Add page_fault_entry and page_fault_exit event definitions. It will
>> allow each architecture to instrument their page faults.
>
> I'm wondering if this tracepoint could handle other page faults,
> like faults in kernel memory(vmalloc, kmmio, etc...)
>
> And if we decide to support those faults, add a type annotate in TP_printk
> would be much helpful for user, to let user know what type of page faults
> happened.
>
The plan for x86 was to switch the IDT so that any exception could get a
trace event without any overhead in normal operation. This has been in
the process for quite some time but looks like it was getting very close.
-hpa
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