From: Arnaldo Carvalho de Melo <a...@redhat.com>
We forgot to update the perf.data file format document for the
HEADER_CLOCKID header, do it now from comments in the patch introducing
it.
Cc: Adrian Hunter <adrian.hun...@intel.com>
Cc: Alexander Shishkin <alexander.shish...@linux.intel.com>
Cc: Alexey Budankov <alexey.budan...@linux.intel.com>
Cc: Andi Kleen <a...@linux.intel.com>
Cc: Chong Jiang <chongji...@chromium.org>
Cc: Jiri Olsa <jo...@kernel.org>
Cc: Namhyung Kim <namhy...@kernel.org>
Cc: Peter Zijlstra <pet...@infradead.org>
Cc: Simon Que <s...@chromium.org>
Fixes: cf7905165fee ("perf record: Encode -k clockid frequency into Perf trace")
Link: https://lkml.kernel.org/n/tip-slhnjp06027j3ae17qqet...@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com>
---
tools/perf/Documentation/perf.data-file-format.txt | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/tools/perf/Documentation/perf.data-file-format.txt
b/tools/perf/Documentation/perf.data-file-format.txt
index 99733751695b..600999f89c6d 100644
--- a/tools/perf/Documentation/perf.data-file-format.txt
+++ b/tools/perf/Documentation/perf.data-file-format.txt
@@ -296,6 +296,12 @@ $ perf report --header-only -I
# memory nodes (nr 1, block size 0x8000000):
# 0 [7G]: 0-23,32-69
+ HEADER_CLOCKID = 23,
+
+One uint64_t for the clockid frequency, specified, for instance, via 'perf
+record -k' (see clock_gettime()), to enable timestamps derived metrics
+conversion into wall clock time on the reporting stage.
+
HEADER_BPF_PROG_INFO = 25,
struct bpf_prog_info_linear, which contains detailed information about
--
2.20.1
