[PATCH v2] ftrace: On PowerPC we don't need frame pointers for CALLER_ADDRs

[Ingo Molnar]

* Anton Vorontsov <avorontsov at ru.mvista.com> wrote:

> According to this discussion:
> 
> http://lkml.org/lkml/2008/7/25/338
> http://lkml.org/lkml/2008/7/26/72
> 
> Frame pointers do nothing useful on PowerPC, so lib/Kconfig.debug
> makes CONFIG_FRAME_POINTER unselectable on PPC targets. But ftrace.h
> requires CONFIG_FRAME_POINTER for CALLER_ADDR macros. [...]

hm, why not add PPC to FRAME_POINTERS list of architectures, and select it 
from the powerpc arch Kconfig? Does that cause complications somewhere?

	Ingo