Messages in this thread | | | Subject | Re: [RFC PATCH v4 3/3] bpf: Introduce function for outputing data to perf event | From | Alexei Starovoitov <> | Date | Thu, 16 Jul 2015 21:11:49 -0700 |
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On 7/14/15 4:54 AM, He Kuang wrote: >> I'm not sure llvm generates proper dwarf along with bpf code (I didn't >> test that part. If there are any issues they should be fixable. If you >> can prepapre a patch for llvm that would be even better :) >> > > I found objdump can't get dwarf info from bpf object file: > > $ objdump --dwarf=info bpf.o > bpf.o: file format elf64-little > > $ readelf -a bpf.o |grep debug_info > <EMPTY>
yeah. looks like this part is not working. Interesting that when I do: clang -O2 -target bpf a.c -g -S there is some minimal debug info in the .s, but .o lacks debuginfo completely. Digging further...
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