[kgtp] r992 committed - Update doc
- From: kgtp@xxxxxxxxxxxxxx
- To: kgtp@xxxxxxxxxxxxx
- Date: Wed, 28 Mar 2012 08:42:45 +0000
Revision: 992
Author: teawater
Date: Wed Mar 28 01:41:46 2012
Log: Update doc
http://code.google.com/p/kgtp/source/detail?r=992
Modified:
/trunk/howto.txt
/wiki/HOWTO.wiki
=======================================
--- /trunk/howto.txt Fri Feb 24 19:10:54 2012
+++ /trunk/howto.txt Wed Mar 28 01:41:46 2012
@@ -2,7 +2,7 @@
=========================================
By Hui Zhu <teawater@xxxxxxxxx>
https://code.google.com/p/kgtp/wiki/HOWTO
- 2012-02-21
+ 2012-03-28
Table of contents
-----------------
@@ -49,7 +49,6 @@
Howto let tracepoint output value directly
Output stack dump directly
Switch collect to output the value directly
- Use printf command in actions
Get status of KGTP from Kernel
Set the trace buffer into a circular buffer
Do not stop tracepoint when the GDB disconnects
@@ -254,17 +253,6 @@
-How to get new version GDB
---------------------------
-
-The old version GDB such as GDB 7.2 have some bugs about tracepoint that
KGTP
-need. So I suggest you update your version older than 7.2.
-If you use UBUNTU, use can get the new version from
-https://lkml.org/lkml/2011/6/4/65
-
-
-
-
Howto use
---------
@@ -1216,46 +1204,6 @@
"gtp 1" means that it was output by tracepoint 1.
-Use printf command in actions
------------------------------
-
-Before you use this function, please go to https://code.google.com/p/gdbt/
-install GDB for KGTP first.
-
-Following example show the a count number, pid and the file name that call
-vfs_readdir:
-
---------------------------------------------------------------------------------
-target remote /sys/kernel/debug/gtp
-tvariable $c
-trace vfs_readdir
- commands
- printf "<0>%d pid=%d name:%s\n", $c=$c+1, ((struct task_struct
*)$current_task)->pid, file->f_path.dentry->d_iname
- end
---------------------------------------------------------------------------------
-
-Then your kernel will printk like:
-
---------------------------------------------------------------------------------
-1 pid=10888 name:bin
-2 pid=10888 name:bin
-3 pid=10893 name:teawater
-4 pid=10893 name:teawater
---------------------------------------------------------------------------------
-
-Like what we use with printk in Linux Kernel, please add kernel loglevel
at the
-beginning and add "\n" in the end.
-The kernel loglevel is:
-KERN_EMERG "<0>" system is unusable
-KERN_ALERT "<1>" action must be taken immediately
-KERN_CRIT "<2>" critical conditions
-KERN_ERR "<3>" error conditions
-KERN_WARNING "<4>" warning conditions
-KERN_NOTICE "<5>" normal but significant condition
-KERN_INFO "<6>" informational
-KERN_DEBUG "<7>" debug-level messages
-
-
Get status of KGTP from Kernel
------------------------------
=======================================
--- /wiki/HOWTO.wiki Mon Feb 20 20:06:54 2012
+++ /wiki/HOWTO.wiki Wed Mar 28 01:41:46 2012
@@ -1,5 +1,5 @@
#labels Phase-QA,Phase-Deploy
-Update in 2012-02-21
+Update in 2012-03-28
<wiki:toc max_depth="3" />
= What is KGTP =
*KGTP* is a *realtime* and *lightweight* Linux Kernel *debugger* and
*tracer*.<br><br>
@@ -106,10 +106,6 @@
This commands will copy the files of KGTP to the directory that DKMS
need.<br>
Then you can use DKMS commands to control KGTP.<br>
Please goto http://linux.dell.com/dkms/manpage.html to see how to use DKMS.
-
-= How to get new version GDB =
-The old version GDB such as GDB 7.2 have some bugs about tracepoint that
KGTP need. So I suggest you update your version older than 7.2.<br>
-If you use UBUNTU, use can get the new version from
https://lkml.org/lkml/2011/6/4/65
= Howto use =
== Exec it ==
If you have installed KGTP in your system, you can:
@@ -814,36 +810,6 @@
gtp 1:file->f_path.dentry->d_iname=b26
}}}
"gtp 1" means that it was output by tracepoint 1.
-=== Use printf command in actions ===
-Before you use this function, please go to
[https://code.google.com/p/gdbt/] install GDB for KGTP first.
-Following example show the a count number, pid and the file name that call
vfs_readdir:
-{{{
-target remote /sys/kernel/debug/gtp
-tvariable $c
-trace vfs_readdir
- commands
- printf "<0>%d pid=%d name:%s\n", $c=$c+1, ((struct task_struct
*)$current_task)->pid, file->f_path.dentry->d_iname
- end
-}}}
-Then your kernel will printk like:
-{{{
-1 pid=10888 name:bin
-2 pid=10888 name:bin
-3 pid=10893 name:teawater
-4 pid=10893 name:teawater
-}}}
-Like what we use with printk in Linux Kernel, please add kernel loglevel
at the beginning and add "\n" in the end.<br>
-The kernel loglevel is:
-{{{
-KERN_EMERG "<0>" system is unusable
-KERN_ALERT "<1>" action must be taken immediately
-KERN_CRIT "<2>" critical conditions
-KERN_ERR "<3>" error conditions
-KERN_WARNING "<4>" warning conditions
-KERN_NOTICE "<5>" normal but significant condition
-KERN_INFO "<6>" informational
-KERN_DEBUG "<7>" debug-level messages
-}}}
== Get status of KGTP from Kernel ==
Please use GDB command "tstatus"
== Set the trace buffer into a circular buffer ==
Other related posts:
- » [kgtp] r992 committed - Update doc - kgtp
