Re: [patch 7/7] stacktrace filtering for fault-injection capabilities

Akinobu Mita
2006-10-13T18:12:25Z

2006/10/14, Akinobu Mita <akinobu.mita@gmail.com>:

> > > --- work-fault-inject.orig/lib/Kconfig.debug
> > > +++ work-fault-inject/lib/Kconfig.debug
> > > @@ -472,6 +472,8 @@ config LKDTM
> > >
> > > config FAULT_INJECTION
> > > bool
> > > + select STACKTRACE
> > > + select FRAME_POINTER
> > >
> > > config FAILSLAB
> > > bool "fault-injection capabilitiy for kmalloc"
> > >
> >
> > Is the selection of FRAME_POINTER really needed? The fancy new unwinder
> > is supposed to be able to handle frame-pointerless unwinding?
>
> As I wrote in another reply, There are two type of implementation of
> this stacktrace filter.
>
> - using STACKTRACE + FRAME_POINTER
> - using new unwinder (STACK_UNWIND)
>
> The stacktrace with using new unwinder without FRAME_POINTER is much
> slower than STACKTRACE + FRAME_POINTER.
>

Maybe I should drop new unwinder support for now.