Re: [PATCH -next-20080709] fixup stop_machine use cpu mask vsftrace

From: Ingo Molnar
Date: Fri Jul 11 2008 - 04:56:22 EST



* Ingo Molnar <mingo@xxxxxxx> wrote:

>
> * Milton Miller <miltonm@xxxxxxx> wrote:
>
> > Hi Rusty, Ingo.
> >
> > Rusty's patch [PATCH 3/3] stop_machine: use cpu mask rather than magic
> > numbers didn't find kernel/trace/ftrace.c in -next, causing an
> > immediate almost NULL pointer dereference in ftrace_dynamic_init.
>
> Rusty - what's going on here? Please do not change APIs like that,
> which cause code to crash. Either do a compatible API change, or
> change it over in a way that causes clear build failures, not crashes.

ah, i see it from Rusty's other reply that there's going to be another
version of this. Good :-)

Ingo
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