From a5d1c2fedbef15004d6cd6236fa4ed86ed4c7e0e Mon Sep 17 00:00:00 2001
From: Tom Zanussi <tzanussi@gmail.com>
Date: Tue, 15 Dec 2009 02:53:40 -0600
Subject: [PATCH] --- yaml --- r: 177440 b: refs/heads/master c:
 a6005123ce22770dbd91bc3cb637ce0807ab959b h: refs/heads/master v: v3

---
 [refs]                                        |  2 +-
 trunk/tools/perf/Documentation/perf-trace.txt | 27 ++++++++++++++++++-
 2 files changed, 27 insertions(+), 2 deletions(-)

diff --git a/[refs] b/[refs]
index 6ce5b850ad6b..f238aebc5ea5 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 3875294f5c0d7b9ef96ffc373d8a956ebd7c0c7f
+refs/heads/master: a6005123ce22770dbd91bc3cb637ce0807ab959b
diff --git a/trunk/tools/perf/Documentation/perf-trace.txt b/trunk/tools/perf/Documentation/perf-trace.txt
index 07065efa60e0..60e5900da483 100644
--- a/trunk/tools/perf/Documentation/perf-trace.txt
+++ b/trunk/tools/perf/Documentation/perf-trace.txt
@@ -8,18 +8,43 @@ perf-trace - Read perf.data (created by perf record) and display trace output
 SYNOPSIS
 --------
 [verse]
-'perf trace' [-i <file> | --input=file] symbol_name
+'perf trace' {record <script> | report <script> [args] }
 
 DESCRIPTION
 -----------
 This command reads the input file and displays the trace recorded.
 
+There are several variants of perf trace:
+
+  'perf trace' to see a detailed trace of the workload that was
+  recorded.
+
+  'perf trace record <script>' to record the events required for 'perf
+  trace report'.  <script> is the name displayed in the output of
+  'perf trace --list' i.e. the actual script name minus any language
+  extension.
+
+  'perf trace report <script>' to run and display the results of
+  <script>.  <script> is the name displayed in the output of 'perf
+  trace --list' i.e. the actual script name minus any language
+  extension.  The perf.data output from a previous run of 'perf trace
+  record <script>' is used and should be present for this command to
+  succeed.
+
 OPTIONS
 -------
 -D::
 --dump-raw-trace=::
         Display verbose dump of the trace data.
 
+-L::
+--Latency=::
+        Show latency attributes (irqs/preemption disabled, etc).
+
+-l::
+--list=::
+        Display a list of available trace scripts.
+
 -s::
 --script=::
         Process trace data with the given script ([lang]:script[.ext]).