Re: Dynamic-ftrace not working in PlayStation3

Complementing what Arnd said, we got the dynamic ftrace to work. Just
changed 4 things in the *menuconfig*.
Before these were built as modules (this is the default I guess):
CONFIG_USB=m
CONFIG_SOUND=m
CONFIG_SND=m
CONFIG_SND_USB_AUDIO=m

Then got them built into the kernel:
CONFIG_USB=y
CONFIG_SOUND=y
CONFIG_SND=y
CONFIG_SND_USB_AUDIO=y

And everything worked just fine.
In my config when I also tried to build the *CONFIG_SND_PS3* into the
kernel, the kernel did not boot (probably another bug !? :-).

Cheers,
Remis

On Sat, Jan 31, 2009 at 11:25 AM, Arnd Bergmann [off-list ref] wrote:

On Saturday 31 January 2009, Geoff Levand wrote:

quoted

quoted

So I take it that the above showed that the code worked for some?

In my trials it blows up on the first load_module() call, and for my
config that was usbcore:

I looked into it some more with Remis yesterday, and we got ftrace
working by building usbcore and alsa into the kernel. Incidentally,
usbcore is the largest module in this installation (~3MB), which
indicates that it is in some way either related to the size of the
module.

quoted

This ptr of 5f666f725f726573 seems bogus.  I think this code is not
working correctly:

This is an ascii string "_for_res", probably part of
usb_lock_device_for_reset. We saw the same behaviour, but
a different string.

       Arnd <><