Hello,
On Tue, Aug 05, 2025 at 11:03:49AM +0200, Thomas Richter wrote:
> 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.
>
> Signed-off-by: Thomas Richter <tmricht@xxxxxxxxxxxxx>
> Acked-by: Sumanth Korikkar <sumanthk@xxxxxxxxxxxxx>
> Reviewed-by: Jan Polensky <japo@xxxxxxxxxxxxx>
Acked-by: Namhyung Kim <namhyung@xxxxxxxxxx>
Thanks,
Namhyung
> ---
> 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..0437eb5d9188 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,
>
> --
> 2.48.1
>
