fche changed the topic of #systemtap to: http://sourceware.org/systemtap; email systemtap@sourceware.org if answers here not timely, conversations may be logged
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<lorddoskias> hello
<lorddoskias> I'm having problems running the following systemtap command: stap -v -e 'probe vfs.read {printf("read performed\n"); exit()}'
<lorddoskias> I'm getting the following errors: semantic error: while resolving probe point: identifier 'kernel' at /usr/local/share/systemtap/tapset/linux/vfs.stp:882:18
<lorddoskias> source: probe vfs.read = kernel.function("vfs_read")
<lorddoskias> semantic error: missing x86_64 kernel/module debuginfo [man warning::debuginfo] under '/lib/modules/3.12.51-clouder3-slub-debug/build'
<lorddoskias> semantic error: while resolving probe point: identifier 'vfs' at <input>:1:7
<lorddoskias> ^
<lorddoskias> source: probe vfs.read {printf("read performed\n"); exit()}
<lorddoskias> so /lib/modules/3.12.51-clouder3-slub-debug/build does point to my kernel build directory but what should be the filename of the vmlinux?
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<lorddoskias> ok, so apparently systemtap needed kprobes enabled
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<fche> lorddoskias, that probe will need kprobes support in the kernel, yes
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<irker751> systemtap: fche systemtap.git:refs/heads/master * release-2.9-183-g54d87c8 / man/stap.1 runtime/unwind.c session.cxx: unwind diagnostic improvements http://tinyurl.com/jcfrz82
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