lkml.org 
[lkml]   [2017]   [Nov]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[tip:perf/core] perf tools: Document some missing perf.data headers
Commit-ID:  35c0a81a97692cc0afe3d005c9a737bbde06e784
Gitweb: https://git.kernel.org/tip/35c0a81a97692cc0afe3d005c9a737bbde06e784
Author: Andi Kleen <ak@linux.intel.com>
AuthorDate: Thu, 9 Nov 2017 06:55:24 -0800
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Thu, 16 Nov 2017 14:49:55 -0300

perf tools: Document some missing perf.data headers

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 e90c59c..15e8b48 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,

\
 
 \ /
  Last update: 2017-11-18 09:30    [W:0.104 / U:14.800 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site