[PATCH] perf docs: Allow man page date to be specified

[Ian Rogers]

With this change if a perf_date parameter is provided to asciidoc
then it will override the default date written to the man page metadata.
Without this change, or if the perf_date isn't specified, then the
current date is written to the metadata. Having this parameter allows
the metadata to be constant if builds happen on different dates. The
name of the parameter is intended to be consistent with the existing
perf_version parameter.

Signed-off-by: Ian Rogers <irogers@xxxxxxxxxx>
---
 tools/perf/Documentation/asciidoc.conf | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/perf/Documentation/asciidoc.conf b/tools/perf/Documentation/asciidoc.conf
index 356b23a40339..2b62ba1e72b7 100644
--- a/tools/perf/Documentation/asciidoc.conf
+++ b/tools/perf/Documentation/asciidoc.conf
@@ -71,6 +71,9 @@ ifdef::backend-docbook[]
 [header]
 template::[header-declarations]
 <refentry>
+ifdef::perf_date[]
+<refentryinfo><date>{perf_date}</date></refentryinfo>
+endif::perf_date[]
 <refmeta>
 <refentrytitle>{mantitle}</refentrytitle>
 <manvolnum>{manvolnum}</manvolnum>
-- 
2.23.0.351.gc4317032e6-goog