I will compile my kernel with these options, but I have question what to do now. Should I ignore current state (locked journaling proccess) and just sync and reboot? (I have no problem, but I would like to try to investigate current problem if it is possible with my current kernel config).

By LuVar.


----- "Theodore Ts'o" [off-list ref] wrote:

On Wed, Aug 01, 2012 at 09:30:39AM +0100, LuVar wrote:

quoted

File does not exist... (if there is something to turn on in kernel

config, I could do that for future...)

The options you need to enable to use ftrace are:

    CONFIG_FUNCTION_TRACER
    CONFIG_FUNCTION_GRAPH_TRACER
    CONFIG_STACK_TRACER
    CONFIG_DYNAMIC_FTRACE    

There's a pretty good tutorial here: http://lwn.net/Articles/365835/

If you are willing to compile your own kernel, can you try going to
the latest 3.5 kernel and see if the problem still affects you there?

    	       	      	      	 - Ted