linux-kernel - [PATCH v2] Improve perf option help information in perf.txt

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Message-Id: <1599563792-20711-1-git-send-email-tangzejiang@loongson.cn>
Date:   Tue,  8 Sep 2020 19:16:32 +0800
From:   Zejiang Tang <tangzejiang@...ngson.cn>
To:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-kernel@...r.kernel.org,
        Ravi Bangoria <ravi.bangoria@...ux.ibm.com>,
        Zejiang Tang <tangzejiang@...ngson.cn>
Subject: [PATCH v2] Improve perf option help information in perf.txt

Perf could use many options, such as:-vv, --exec-path,
--html-path, -p, --paginate,--no-pager, --debugfs-dir,
--buildid-dir, --list-cmds, --list-opts. Add these options
in perf.txt.

Signed-off-by: Zejiang Tang <tangzejiang@...ngson.cn>
---
 tools/perf/Documentation/perf.txt | 69 ++++++++++++++++++++++++++-------------
 1 file changed, 47 insertions(+), 22 deletions(-)

diff --git a/tools/perf/Documentation/perf.txt b/tools/perf/Documentation/perf.txt
index 3f37ded..5edb854 100644
--- a/tools/perf/Documentation/perf.txt
+++ b/tools/perf/Documentation/perf.txt
@@ -12,32 +12,57 @@ SYNOPSIS
 
 OPTIONS
 -------
---debug::
-	Setup debug variable (see list below) in value
-	range (0, 10). Use like:
-	  --debug verbose   # sets verbose = 1
-	  --debug verbose=2 # sets verbose = 2
-
-	List of debug variables allowed to set:
-	  verbose          - general debug messages
-	  ordered-events   - ordered events object debug messages
-	  data-convert     - data convert command debug messages
-	  stderr           - write debug output (option -v) to stderr
-	                     in browser mode
-	  perf-event-open  - Print perf_event_open() arguments and
-			     return value
-
---buildid-dir::
-	Setup buildid cache directory. It has higher priority than
-	buildid.dir config file option.
+-h::
+--help::
+        Run perf help command.
 
 -v::
 --version::
-  Display perf version.
+        Display perf version.
 
--h::
---help::
-  Run perf help command.
+-vv::
+        Print the compiled-in status of libraries.
+
+--exec-path::
+        Display or set exec path.
+
+--html-path::
+        Display absolute html path.
+
+-p::
+--paginate::
+        Set up pager.
+
+--no-pager::
+        Add or change the content of environment variables.
+
+--buildid-dir::
+        Setup buildid cache directory. It has higher priority
+        than buildid.dir config file option.
+
+--list-cmds::
+        List the most commonly used perf commands.
+
+--list-opts::
+        List available perf options.
+
+--debugfs-dir::
+        Set debugfs directory or set environment variable PERF_DEBUGFS_DIR.
+
+--debug::
+        Setup debug variable (see list below) in value
+        range (0, 10). Use like:
+          --debug verbose   # sets verbose = 1
+          --debug verbose=2 # sets verbose = 2
+
+        List of debug variables allowed to set:
+          verbose          - general debug messages
+          ordered-events   - ordered events object debug messages
+          data-convert     - data convert command debug messages
+          stderr           - write debug output (option -v) to stderr
+                             in browser mode
+          perf-event-open  - Print perf_event_open() arguments and
+                             return value
 
 DESCRIPTION
 -----------
-- 
2.1.0