* FTRACE makes the kernel not boot
@ 2013-03-30 23:29 Lluís Batlle i Rossell
2013-04-01 16:48 ` David Daney
0 siblings, 1 reply; 2+ messages in thread
From: Lluís Batlle i Rossell @ 2013-03-30 23:29 UTC (permalink / raw)
To: linux-mips
Hello,
For a fuloong (loongson2f) I had two configs, one booted and the other not, on
a linux 3.8. I narrowed down the difference to enabling CONFIG_FTRACE.
Enabling CONFIG_FTRACE makes the kernel not load at all; it even does not print
any early printk to the serial port.
Do you agree there is a problem with FTRACE? Maybe it is solved already
in the mips git branch?
Regards,
Lluís.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: FTRACE makes the kernel not boot
2013-03-30 23:29 FTRACE makes the kernel not boot Lluís Batlle i Rossell
@ 2013-04-01 16:48 ` David Daney
0 siblings, 0 replies; 2+ messages in thread
From: David Daney @ 2013-04-01 16:48 UTC (permalink / raw)
To: Lluís Batlle i Rossell, Ralf Baechle, Al Cooper; +Cc: linux-mips
On 03/30/2013 04:29 PM, Lluís Batlle i Rossell wrote:
> Hello,
>
> For a fuloong (loongson2f) I had two configs, one booted and the other not, on
> a linux 3.8. I narrowed down the difference to enabling CONFIG_FTRACE.
>
> Enabling CONFIG_FTRACE makes the kernel not load at all; it even does not print
> any early printk to the serial port.
>
> Do you agree there is a problem with FTRACE? Maybe it is solved already
> in the mips git branch?
>
This is caused by 58b69401c797e (MIPS: Function tracer: Fix broken
function tracing), which broke ftrace for 64-bit kernels. The subject
of the patch is a bit misleading in this respect, it probably should
have been something like 'MIPS: Function tracer: Break function tracing
that used to work'
David Daney
> Regards,
> Lluís.
>
>
>
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2013-04-01 16:48 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2013-03-30 23:29 FTRACE makes the kernel not boot Lluís Batlle i Rossell
2013-04-01 16:48 ` David Daney
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox