diff options
| author | Thomas Falcon <thomas.falcon@intel.com> | 2026-06-12 14:28:47 -0500 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2026-06-15 16:54:39 -0300 |
| commit | 1221e50b4aa60b98aade37eb4e536d4a2cb93e75 (patch) | |
| tree | 4ed0de14bdefd1721c7d227b589d44da20dfef66 | |
| parent | cd355f6dc70503191249c5147e2f2e8f3c8838bd (diff) | |
perf tools: Document recent additions to the perf.data file header
Add documentation for recently added HEADER_E_MACHINE and
HEADER_CLN_SIZE data to the perf.data file. Also fix a typo
at the end of the header section.
Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Thomas Falcon <thomas.falcon@intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Dapeng Mi <dapeng1.mi@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/Documentation/perf.data-file-format.txt | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/tools/perf/Documentation/perf.data-file-format.txt b/tools/perf/Documentation/perf.data-file-format.txt index 0e4d0ecc9e12..b90cba9168f8 100644 --- a/tools/perf/Documentation/perf.data-file-format.txt +++ b/tools/perf/Documentation/perf.data-file-format.txt @@ -464,7 +464,21 @@ struct cpu_domain_info { struct domain_info domains[]; }; - other bits are reserved and should ignored for now + HEADER_E_MACHINE = 33, + +ELF machine and flags data. e_machine is expanded from 16 to 32 bits +for alignment. Format: + + u32 e_machine; + u32 e_flags; + + HEADER_CLN_SIZE = 34, + +The size of the cacheline in bytes. Format: + + unsigned int cln_size; + + other bits are reserved and should be ignored for now HEADER_FEAT_BITS = 256, Attributes |