From mboxrd@z Thu Jan  1 00:00:00 1970
From: abelvesa@gmail.com (Abel Vesa)
Date: Thu, 10 Dec 2015 14:19:29 +0100
Subject: Ftrace: tracing init call of out of tree modules
In-Reply-To: <CAOsEZohMAF_UwoHz8i+iY=gGPT5bYGSbUw7PoFyRij6HR=dBgw@mail.gmail.com>
References: <CAOsEZohMAF_UwoHz8i+iY=gGPT5bYGSbUw7PoFyRij6HR=dBgw@mail.gmail.com>
Message-ID: <20151210131929.GA13868@lbl.gov>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org



> However, as soon as I rmmod the driver, set_ftrace_filter becomes
> empty automatically.

Out-of-tree means the module is not build together with the kernel.

> 
> So how do I do a trace on out-of-tree modules I have ?
> 

If you built your driver without building it together with the kernel, 
you can trace it as any other module after you insmod it.

Cheers,
Abel