From 8e21be4f815ca8edfee1decd87f298f92123f719 Mon Sep 17 00:00:00 2001 From: Song Liu Date: Mon, 20 May 2019 23:44:06 -0700 Subject: 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 Signed-off-by: Song Liu Cc: Jiri Olsa Cc: Peter Zijlstra 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 --- tools/perf/Documentation/perf.data-file-format.txt | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'tools') 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 { -- cgit v1.2.3