perf lock: Document valid sort keys
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20110222205312.GA18474@joi.lan>
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/Documentation/perf-lock.txt b/tools/perf/Documentation/perf-lock.txt
index 921de25..4a26a2f 100644
--- a/tools/perf/Documentation/perf-lock.txt
+++ b/tools/perf/Documentation/perf-lock.txt
@@ -24,8 +24,8 @@
'perf lock report' reports statistical data.
-OPTIONS
--------
+COMMON OPTIONS
+--------------
-i::
--input=<file>::
@@ -39,6 +39,14 @@
--dump-raw-trace::
Dump raw trace in ASCII.
+REPORT OPTIONS
+--------------
+
+-k::
+--key=<value>::
+ Sorting key. Possible values: acquired (default), contended,
+ wait_total, wait_max, wait_min.
+
SEE ALSO
--------
linkperf:perf[1]
diff --git a/tools/perf/builtin-lock.c b/tools/perf/builtin-lock.c
index e00d938..2e93f99 100644
--- a/tools/perf/builtin-lock.c
+++ b/tools/perf/builtin-lock.c
@@ -893,7 +893,7 @@
static const struct option report_options[] = {
OPT_STRING('k', "key", &sort_key, "acquired",
- "key for sorting"),
+ "key for sorting (acquired / contended / wait_total / wait_max / wait_min)"),
/* TODO: type */
OPT_END()
};
