1. Will general Linux tools such as SystemTap, Kdump, or Kernel Debugger be availble or ported to MIC ?
2. Is there a document to describe kSCIF interface/API ?
Thanks,
Wendy
Kernel Trace and/or Debug Tools ?
Lun, 03/12/2012 - 12:50
Kernel Trace and/or Debug Tools ?
Para obtener más información sobre las optimizaciones del compilador, consulte el aviso sobre la optimización.
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Mar, 04/12/2012 - 12:06
I'm trying to get a more complete answer for you but what I have so far is that the Kernel Debugger is on the feature request list.
As far as the kSCIF information, under /opt/intel/mic/scif/docs, on the host for the coprocessor,there are both kernel and user API manuals.
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Mar, 04/12/2012 - 13:24
Thanks .. I'm more familiar with general mailing list posting ... not sure how this forum thing works. Hopefully this reply will reach a right place.
I would imagine the "kdump" or "system tap" would be easier than kernel debugger ? Doing kernel works on MIC, my current (and most significant) difficulty is kernel crash/panic. It has to use the "printk" type of tracing - taking numerous build-reload cycles to figure out where the system crashes. It is more than tedious.
-- Wendy
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Lun, 10/12/2012 - 15:02
MIC kernel does have CONFIG_CRASH_DUMP enabled. its kdump files show up in host's /var/crash/mic/ directory. Now all I need is to find the corresponding vmlinux file. Could someone pass info on how to rebuild (and/or obtain) the vmlinux file to read these dumps ?
Great Thanks,
Wendy
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Lun, 10/12/2012 - 15:40
Try /lib/firmware/mic/vmlinux. Is that what you need? If you need to recompile the kernel, you will need the MPSS tar file, but I'm not sure the full kernel code is there.
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Mié, 12/12/2012 - 09:55
The "vmlinux" file works well. Now I know where exactly the kmod crashes :) ...
Great Thanks,
Wendy