Commit-ID: 8e21be4f815ca8edfee1decd87f298f92123f719
Gitweb: https://git.kernel.org/tip/8e21be4f815ca8edfee1decd87f298f92123f719
Author: Song Liu <songliubraving@xxxxxx>
AuthorDate: Mon, 20 May 2019 23:44:06 -0700
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Wed, 5 Jun 2019 09:47:52 -0300
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@xxxxxxxxxx>
Signed-off-by: Song Liu <songliubraving@xxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Fixes: 606f972b1361 ("perf bpf: Save bpf_prog_info information as headers to perf.data")
Link: http://lkml.kernel.org/r/20190521064406.2498925-1-songliubraving@xxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/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..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 {
|