On Thu, Nov 09, 2017 at 06:55:24AM -0800, Andi Kleen wrote:
> From: Andi Kleen <a...@linux.intel.com>
>
> Document STAT and CACHE header entries.
>
> Signed-off-by: Andi Kleen <a...@linux.intel.com>
Acked-by: Jiri Olsa <jo...@kernel.org>
thanks,
jirka
> ---
> 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
>
