[PATCH 2/9] uprobes: check for single step support

[Oleg Nesterov]

On 10/17, Srikar Dronamraju wrote:
>
> * Rabin Vincent <rabin at rab.in> [2012-10-14 21:23:06]:
>
> >  void __weak arch_uprobe_enable_step(struct arch_uprobe *arch)
> >  {
> > -	user_enable_single_step(current);
> > +	if (arch_has_single_step())
> > +		user_enable_single_step(current);
> >  }
> >
> >  void __weak arch_uprobe_disable_step(struct arch_uprobe *arch)
>
> This change is fine. But I am wondering if should have a dummy
> arch_uprobe_enable_step / arch_uprobe_disable_step in uprobes ARM.

Or, better, we can kill it. We wertr going to do this anyway, we were
waiting for powerpc port.

Just I do not know how this change should be routed, it should update
both x86/powerpc.

Or do you think arch_uprobe_enable_step() still makes any sense?

Oleg.