Hi Roland!

I made tracing for srpt_add_one function. Trace log attached to mail

Roland Dreier писал 2012-04-11 02:09:
> On Tue, Apr 10, 2012 at 7:52 AM, Alexey Shvetsov <alexxy-aBrp7R+bbdUdnm+yROfE0A@public.gmane.org> 
> wrote:
>> I'm  trying to use ib_srpt from mainline kernel (3.3.x and 3.4-rcX)
>> But right after loading ib_srpt i always get error in dmesg
>>
>> srpt_add_one(mthca0) failed.
>
> I would suggest the following: make sure ib_mthca is NOT loaded, and 
> load
> the srpt module.  Then enable ftrace -- config options
>
>     CONFIG_FUNCTION_TRACER
>     CONFIG_DYNAMIC_FTRACE
>     CONFIG_FUNCTION_GRAPH_TRACER
>
> and use the function graph tracer to see what srpt_add_one() calls:
>
> # cd /sys/kernel/debug/trace
> # echo srpt_add_one > set_graph_function
> # echo function_graph > current_tracer
> # modprobe ib_mthca
> # cat trace
>
> and send the output of that "cat trace" command to the list.  Then we 
> can
> see what step of initialization fails and debug from there.
>
> (cf the section "the function_graph tracer" in
> https://lwn.net/Articles/370423/)
>
> Thanks!
>  - R.

-- 
Best Regards,
Alexey 'Alexxy' Shvetsov
Petersburg Nuclear Physics Institute, Russia
Department of Molecular and Radiation Biophysics
Gentoo Team Ru
Gentoo Linux Dev
mailto:alexxyum-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
mailto:alexxy-aBrp7R+bbdUdnm+yROfE0A@public.gmane.org
mailto:alexxy-heEE5zn7HfaV8fSEjHp0FA@public.gmane.org