Re: [PATCH v8 0/5] arm64: ftrace with regs

Torsten Duwe
2019-03-29T10:19:05Z

On Mon, Mar 11, 2019 at 12:18:05PM +0000, Mark Rutland wrote:
> Hi Torsten,
>
> On Mon, Mar 11, 2019 at 12:49:46PM +0100, Torsten Duwe wrote:
> > On Wed, Feb 13, 2019 at 11:11:04AM +0000, Julien Thierry wrote:
> > > Hi Torsten,
> > >
> > > On 08/02/2019 15:08, Torsten Duwe wrote:
> > > > Patch series v8, as discussed.
> > > > The whole series applies cleanly on 5.0-rc5
> >
> > So what's the status now? Besides debatable minor style
> > issues there were no more objections to v8. Would this
> > go through the ARM repo or via the ftrace repo?
>
> Sorry, I have some half-written review comments that I will clean up and
> send shortly.

Ping?

> As commented on prior versions, I'd very much like to see the
> MCOUNT_ADDR hack go, by teaching the core ftrace code to not assume that
> an mcount symbol exists.

> We should be able to do that by separating the notion of NOPing a patch
> site from the notion of initializing it for the first time.

This is generally a good idea, and would affect other architectures as well,
see arch/s390/kernel/ftrace.c ftrace_make_nop(...)

I propose to do this in a second round.

Torsten