linux-kernel - [PATCH 6/6] perf trace/scripting: update Documentation

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Date:	Tue, 15 Dec 2009 02:53:40 -0600
From:	Tom Zanussi <tzanussi@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	mingo@...e.hu, fweisbec@...il.com, rostedt@...dmis.org
Subject: [PATCH 6/6] perf trace/scripting: update Documentation

Update the perf-trace page with new and missing options and remove
some unused ones.

Signed-off-by: Tom Zanussi <tzanussi@...il.com>
---
 tools/perf/Documentation/perf-trace.txt |   27 ++++++++++++++++++++++++++-
 1 files changed, 26 insertions(+), 1 deletions(-)

diff --git a/tools/perf/Documentation/perf-trace.txt b/tools/perf/Documentation/perf-trace.txt
index 07065ef..60e5900 100644
--- a/tools/perf/Documentation/perf-trace.txt
+++ b/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]).
-- 
1.6.4.GIT

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