From 817af72c05c8adfc5b5c8c772e237a2ac85b25f5 Mon Sep 17 00:00:00 2001 From: Thomas Richter Date: Tue, 5 Aug 2025 11:03:49 +0200 Subject: [PATCH] perf tools: Update header documentation on BPF_PROG_INFO Update the perf.data file format description on header section HEADER_BPF_PROG_INFO. The information is taken from process_bpf_prog_info() and write_bpf_prog_info() from file util/header.c. Reviewed-by: Jan Polensky Signed-off-by: Thomas Richter Acked-by: Namhyung Kim Acked-by: Sumanth Korikkar Cc: Alexander Gordeev Cc: Heiko Carstens Cc: Vasily Gorbik Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/perf.data-file-format.txt | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/tools/perf/Documentation/perf.data-file-format.txt b/tools/perf/Documentation/perf.data-file-format.txt index cd95ba09f727..c9d4dec65344 100644 --- a/tools/perf/Documentation/perf.data-file-format.txt +++ b/tools/perf/Documentation/perf.data-file-format.txt @@ -348,6 +348,16 @@ to special needs. struct perf_bpil, which contains detailed information about a BPF program, including type, id, tag, jited/xlated instructions, etc. +The format of data in HEADER_BPF_PROG_INFO is as follows: + u32 count + + struct perf_bpil { + u32 info_len; /* size of struct bpf_prog_info, when the tool is compiled */ + u32 data_len; /* total bytes allocated for data, round up to 8 bytes */ + u64 arrays; /* which arrays are included in data */ + struct bpf_prog_info info; + u8 data[]; + }[count]; HEADER_BPF_BTF = 26, -- 2.51.0