perf buildid-list: Add option to show the running kernel build id
[root@emilia ~]# perf buildid-list -k
07b0c016a2b30004e86132d0239945b1e88f5d75
Useful when diagnosing build id problems in debuginfo packages, etc.
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-po1bl7acn6e1hhne90opmvtl@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/Documentation/perf-buildid-list.txt b/tools/perf/Documentation/perf-buildid-list.txt
index 5eaac6f..770a7f3 100644
--- a/tools/perf/Documentation/perf-buildid-list.txt
+++ b/tools/perf/Documentation/perf-buildid-list.txt
@@ -16,6 +16,8 @@
tools can be used to fetch packages with matching symbol tables for use by
perf report.
+It can also be used to show the build id of the running kernel.
+
OPTIONS
-------
-H::
@@ -27,6 +29,9 @@
-f::
--force::
Don't do ownership validation.
+-k::
+--kernel::
+ Show running kernel build id.
-v::
--verbose::
Be more verbose.