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| author |   Andi Kleen <ak@linux.intel.com> | 2017-11-09 06:55:24 -0800 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-11-16 14:49:55 -0300 |
| commit | 35c0a81a97692cc0afe3d005c9a737bbde06e784 (patch) | |
| tree | 8f1868ebb2834ae8442311f1c5776ba65a3b7c6b /tools/perf/Documentation | |
| parent | perf buildid-cache: Update help text for purge command (diff) | |
| download | linux-dev-35c0a81a97692cc0afe3d005c9a737bbde06e784.tar.xz linux-dev-35c0a81a97692cc0afe3d005c9a737bbde06e784.zip | |
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>
Diffstat (limited to 'tools/perf/Documentation')
| -rw-r--r-- | tools/perf/Documentation/perf.data-file-format.txt | 23 |
1 files changed, 23 insertions, 0 deletions
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, |