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Subject[PATCH] perf docs: description of header HEADER_BPF_PROG_INFO and HEADER_BPF_BTF
Date
This patch addes description of HEADER_BPF_PROG_INFO and HEADER_BPF_BTF to
perf.data-file-format.txt.

Signed-off-by: Song Liu <songliubraving@fb.com>
---
.../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..ab48db21ff16 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 {
--
2.17.1
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