Messages in this thread Patch in this message | | | Date | Mon, 17 Jun 2019 11:55:00 -0700 | From | tip-bot for Song Liu <> | Subject | [tip:perf/core] perf data: Add description of header HEADER_BPF_PROG_INFO and HEADER_BPF_BTF |
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Commit-ID: 8e21be4f815ca8edfee1decd87f298f92123f719 Gitweb: https://git.kernel.org/tip/8e21be4f815ca8edfee1decd87f298f92123f719 Author: Song Liu <songliubraving@fb.com> AuthorDate: Mon, 20 May 2019 23:44:06 -0700 Committer: Arnaldo Carvalho de Melo <acme@redhat.com> CommitDate: Wed, 5 Jun 2019 09:47:52 -0300
perf data: Add description of header HEADER_BPF_PROG_INFO and HEADER_BPF_BTF
This patch addes description of HEADER_BPF_PROG_INFO and HEADER_BPF_BTF to perf.data-file-format.txt.
Requested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Song Liu <songliubraving@fb.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Fixes: 606f972b1361 ("perf bpf: Save bpf_prog_info information as headers to perf.data") Link: http://lkml.kernel.org/r/20190521064406.2498925-1-songliubraving@fb.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> --- tools/perf/Documentation/perf.data-file-format.txt | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)
diff --git a/tools/perf/Documentation/perf.data-file-format.txt b/tools/perf/Documentation/perf.data-file-format.txt index 6967e9b02be5..022bb8b1c84a 100644 --- a/tools/perf/Documentation/perf.data-file-format.txt +++ b/tools/perf/Documentation/perf.data-file-format.txt @@ -272,6 +272,22 @@ struct { Two uint64_t for the time of first sample and the time of last sample. + HEADER_BPF_PROG_INFO = 25, + +struct bpf_prog_info_linear, which contains detailed information about +a BPF program, including type, id, tag, jited/xlated instructions, etc. + + HEADER_BPF_BTF = 26, + +Contains BPF Type Format (BTF). For more information about BTF, please +refer to Documentation/bpf/btf.rst. + +struct { + u32 id; + u32 data_size; + char data[]; +}; + HEADER_COMPRESSED = 27, struct {
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