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Groups > linux.kernel > #1186419
| Path | csiph.com!aioe.org!bofh.it!news.nic.it!robomod |
|---|---|
| From | Alexei Starovoitov <ast@plumgrid.com> |
| Newsgroups | linux.kernel |
| Subject | Re: [RFC PATCH v4 3/3] bpf: Introduce function for outputing data to perf event |
| Date | Fri, 17 Jul 2015 06:20:02 +0200 |
| Message-ID | <pN5hU-2OF-5@gated-at.bofh.it> (permalink) |
| References | <pKDpL-4AR-3@gated-at.bofh.it> <pKDpN-4AR-45@gated-at.bofh.it> <pKOOe-3cV-9@gated-at.bofh.it> <pLDH3-wR-11@gated-at.bofh.it> <pLMr0-5IB-11@gated-at.bofh.it> <pLMAG-612-27@gated-at.bofh.it> <pLMKl-64q-11@gated-at.bofh.it> <pLN3I-6be-17@gated-at.bofh.it> <pLXw7-4lA-5@gated-at.bofh.it> <pM72q-1HL-15@gated-at.bofh.it> |
| X-Original-To | He Kuang <hekuang@huawei.com>, pi3orama <pi3orama@163.com>, Namhyung Kim <namhyung@kernel.org> |
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| Xref | aioe.org linux.kernel:1186419 |
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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... -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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Re: [RFC PATCH v4 3/3] bpf: Introduce function for outputing data to perf event Alexei Starovoitov <ast@plumgrid.com> - 2015-07-17 06:20 +0200
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