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Subject[PATCH 47/83] perf tools: Document some missing perf.data headers
Date
From: Andi Kleen <ak@linux.intel.com>

Document STAT and CACHE header entries.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20171109145528.23371-2-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/Documentation/perf.data-file-format.txt | 23 ++++++++++++++++++++++
1 file changed, 23 insertions(+)

diff --git a/tools/perf/Documentation/perf.data-file-format.txt b/tools/perf/Documentation/perf.data-file-format.txt
index e90c59c6d815..15e8b48077ba 100644
--- a/tools/perf/Documentation/perf.data-file-format.txt
+++ b/tools/perf/Documentation/perf.data-file-format.txt
@@ -238,6 +238,29 @@ struct auxtrace_index {
struct auxtrace_index_entry entries[PERF_AUXTRACE_INDEX_ENTRY_COUNT];
};

+ HEADER_STAT = 19,
+
+This is merely a flag signifying that the data section contains data
+recorded from perf stat record.
+
+ HEADER_CACHE = 20,
+
+Description of the cache hierarchy. Based on the Linux sysfs format
+in /sys/devices/system/cpu/cpu*/cache/
+
+ u32 version Currently always 1
+ u32 number_of_cache_levels
+
+struct {
+ u32 level;
+ u32 line_size;
+ u32 sets;
+ u32 ways;
+ struct perf_header_string type;
+ struct perf_header_string size;
+ struct perf_header_string map;
+}[number_of_cache_levels];
+
other bits are reserved and should ignored for now
HEADER_FEAT_BITS = 256,

--
2.13.6
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