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perf header: Add kerneldoc to 'struct perf_file_header'

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Some of the values are a little strange so add documentation to
resolve ambiguity.

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nick Terrell <terrelln@fb.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Yanteng Si <siyanteng@loongson.cn>
Cc: Yicong Yang <yangyicong@hisilicon.com>
Link: https://lore.kernel.org/r/20240829150154.37929-4-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Ian Rogers
2024-08-29 08:01:49 -07:00
committed by Arnaldo Carvalho de Melo
parent d9c993100e
commit d71bbe799c
1 changed files with 15 additions and 1 deletions
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16
tools/perf/util/header.h
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@@ -61,14 +61,28 @@ struct perf_file_section {
u64 size;
};
/**
* struct perf_file_header: Header representation on disk.
*/
struct perf_file_header {
/** @magic: Holds "PERFILE2". */
u64 magic;
/** @size: Size of this header - sizeof(struct perf_file_header). */
u64 size;
/**
* @attr_size: Size of attrs entries - sizeof(struct perf_event_attr) +
* sizeof(struct perf_file_section).
*/
u64 attr_size;
/** @attrs: Offset and size of file section holding attributes. */
struct perf_file_section attrs;
/** @data: Offset and size of file section holding regular event data. */
struct perf_file_section data;
/* event_types is ignored */
/** @event_types: Ignored. */
struct perf_file_section event_types;
/**
* @adds_features: Bitmap of features. The features are immediately after the data section.
*/
DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
};