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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<irker169> systemtap: wcohen systemtap.git:refs/heads/master * release-4.1-25-ga0e25b4 / bpf-internal.h buildrun.cxx stapbpf/bpfinterp.cxx stapbpf/bpfinterp.h stapbpf/stapbpf.8 stapbpf/stapbpf.cxx tapset/bpf/context.stp testsuite/systemtap.bpf/bpf.exp testsuite/systemtap.bpf/bpf_tests/target.stp: Add support for the target() function and -x option for bpf backend. http://tinyurl.com/y4d4tr5n
<irker169> systemtap: wcohen systemtap.git:refs/heads/master * release-4.1-26-g77d4ab4 / stapbpf/bpfinterp.cxx: @count() and @sum() should provide 0 for empty entries http://tinyurl.com/y429ovv4
<irker169> systemtap: wcohen systemtap.git:refs/heads/master * release-4.1-27-g2d77f53 / testsuite/systemtap.examples/memory/mmfilepage.meta: Add mmfilepage.stp to the list of examples that work with the bpf backend. http://tinyurl.com/y5blfo5o
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<LeoB> Hello there,
<fche> yo
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<LeoB> Suppose a kernel function int foo(int *varpt); which I am able to probe successfully. How can I access the value/contents of varpt ?
<LeoB> I am trying a = $varpt, but it doesn't work
<fche> $varpt should get you the value of the parameter (pointer)
<fche> kernel_int($varpt) should dereference it
<LeoB> semantic error: failed to retrieve location attribute for 'varpt' [man error::dwarf]: identifier '$varpt' at [...]
<fche> the error::dwarf man page gives some information about possible reasons / workarounds
<fche> inlining is one popular cause for problems in this regard
<LeoB> humm, thanks
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