[PATCH v3 1/2] powerpc: split ftrace bits into a separate file

[Naveen N. Rao]

On 2017/03/10 11:54AM, Steven Rostedt wrote:
> On Fri, 10 Mar 2017 21:38:53 +0530
> "Naveen N. Rao" <naveen.n.rao at linux.vnet.ibm.com> wrote:
> 
> > On 2017/03/10 10:45AM, Steven Rostedt wrote:
> > > On Thu, 02 Mar 2017 20:38:53 +1100
> > > Michael Ellerman <mpe at ellerman.id.au> wrote:
> 
> > > > So if we drop that we're left with ftrace.S - which seems perfect to me.  
> > > 
> > > Yeah, I agree. But then there's the problem that ftrace.c and ftrace.S
> > > will get the same ftrace.o. Maybe make it ftrace-hook.S ?  
> > 
> > I've avoided that issue by naming the files ftrace_32.S and ftrace_64.S 
> > (which gets further split up).
> 
> That's what I looked at doing for x86 as well. But not all archs have
> 32 / 64 splits. Should we look to have something that all archs can be
> consistent with?

I don't have a strong opinion about this, but I feel that x86 can simply 
use ftrace_64.S, seeing as the current name is mcount_64.S.

Other architectures could do something similar too, or fall back to 
ftrace_hook.S. That way, all ftrace low-level code can simply be 
referred to as arch/*/ftrace_*.S

- Naveen