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

[Michael Ellerman]

Steven Rostedt <rostedt at goodmis.org> writes:

> On Wed, 22 Feb 2017 00:31:01 +0530
> "Naveen N. Rao" <naveen.n.rao at linux.vnet.ibm.com> wrote:
>
>> entry_*.S now includes a lot more than just kernel entry/exit code. As a
>> first step at cleaning this up, let's split out the ftrace bits into
>> separate files. Also move all related tracing code into a new trace/
>> subdirectory.
>> 
>> No functional changes.
>
> I wonder if we should stay consistent among archs, and call these files
> "mcount_*.S". Or perhaps we should change x86 from mcount_64.S to
> ftrace_64.S?

I prefer ftrace_64.S, there's a lot more in those files than just the
mcount() implementation, and it also makes the link to
kernel/trace/ftrace.c more obvious.

I don't know if it's really worth keeping the names the same across
arches, especially as we already have:

  arch/arm64/kernel/entry-ftrace.S
  arch/arm/kernel/entry-ftrace.S
  arch/blackfin/kernel/ftrace-entry.S
  arch/metag/kernel/ftrace_stub.S

But we can rename it if you feel strongly about it.

cheers