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| author | Song Liu | 2019-05-21 08:44:06 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo | 2019-06-05 14:47:52 +0200 |
| commit | 8e21be4f815ca8edfee1decd87f298f92123f719 (patch) | |
| tree | 13436f4bf341ee6903b7dbf4a3841ceeabb69f41 /tools/perf/Documentation | |
| parent | Merge branch 'x86/topology' into perf/core, to prepare for new patches (diff) | |
| download | kernel-qcow2-linux-8e21be4f815ca8edfee1decd87f298f92123f719.tar.gz kernel-qcow2-linux-8e21be4f815ca8edfee1decd87f298f92123f719.tar.xz kernel-qcow2-linux-8e21be4f815ca8edfee1decd87f298f92123f719.zip | |
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>
Diffstat (limited to 'tools/perf/Documentation')
| -rw-r--r-- | tools/perf/Documentation/perf.data-file-format.txt | 16 |
1 files changed, 16 insertions, 0 deletions
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 { |