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Commit 8e21be4f authored by Song Liu's avatar Song Liu Committed by Arnaldo Carvalho de Melo
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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: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: default avatarSong Liu <songliubraving@fb.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Fixes: 606f972b ("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: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 3384c786

tools/perf/Documentation/perf.data-file-format.txt

+16 −0
Original line number Diff line number Diff line
@@ -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 {