[RFC] [PATCH] task_pt_regs for powerpc systems

[Benjamin Herrenschmidt]

On Mon, 2008-07-14 at 08:32 +1000, Paul Mackerras wrote:
> Srinivasa D S writes:
> 
> >  task_pt_regs() macro defines pt_regs for the given task,  this macro is  
> > currently not defined for powerpc arch. We need this macro for 
> > upcoming utrace features. 
> >  Below attached patch  defines this macro for powerpc arch. Please let 
> > me know your comments on this.
> 
> > +#define task_pt_regs(tsk)	((struct pt_regs *)(tsk)->thread.regs)
> 
> The cast is unnecessary since tsk->thread.regs is already a struct
> pt_regs *.  Also note that tsk->thread.regs will be NULL for a kernel
> thread.

Hrm.. I stuck that one in powerpc master, but not yet in next. Wonder if
I should back it out, sounds like a minor issue.

Ben.