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When running perf it finds the kernel symbols and symbols of my program but it does not find external module symbols. I have written a kernel module which I load using insmod how can I tell perf to find its symbols as well?

I am running a 2.6.37.6 kernel (can't upgrade), my perf does not yet support the dwarf option but I think its a symbol issue. I have compiled everything with -g -fno-omit-frame-pointer

osgx
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hlitz
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  • You can get perf from newer kernel (already compiled or compile yourself) and use it on older kernel. Sometimes this will work and provide you additional capabilities like dwarf option. – osgx Apr 08 '14 at 01:19

1 Answers1

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I had to make it a kernel module, then perf could find its symbols:

IN_TREE_DIR=/lib/modules/`uname -r`/kernel/modulename
mkdir -p $IN_TREE_DIR
cp modulename.ko $IN_TREE_DIR
depmod -a
hlitz
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