Re: [PATCH] perf record: Limit --intr-regs to platforms supporting PERF_REGS

From: Jiri Olsa
Date: Tue Sep 29 2015 - 13:16:15 EST


On Tue, Sep 29, 2015 at 10:01:36PM +0530, Naveen N. Rao wrote:
> On 2015/09/29 12:47PM, Jiri Olsa wrote:
> > On Tue, Sep 29, 2015 at 01:30:10PM +0530, Naveen N. Rao wrote:
> >
> > SNIP
> >
> > > > > Suka has also posted a fix for this with a different approach [1]. Can
> > > > > you please ack/pull one of these versions? Building perf is broken on
> > > > > v4.3-rc due to this.
> > > >
> > > > I did not get any answer for additional comments I made to the patch
> > > > (couldnt get marc.info working, sending the patch again)
> > >
> > > Hi Jiri,
> > > I concur with the changes you proposed to my patch here (getting rid of
> > > the weak variant):
> > > http://article.gmane.org/gmane.linux.kernel/2046108
> > >
> > > I am aware of the other approach you posted (and the one attached
> > > below). When I said "please ack/pull one of these versions", I meant one
> > > of: your version, Suka's and mine.
> >
> > I was hoping somebody could test it on ppc ;-)
> >
> > I think the last version (in my last email) that keeps the weak
> > variable is correct, let's wait for Arnaldo to sort this out
>
> I just tried it, but it fails. As Suka points out in his patch:
> "Adding perf_regs.o to util/Build unconditionally, exposes a
> redefinition error for 'perf_reg_value()' function (due to the static
> inline version in util/perf_regs.h). So use #ifdef
> HAVE_PERF_REGS_SUPPORT' around that function."

could you (or Suka) please reply in here with the patch?

thanks,
jirka
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