Re: [PATCH 14/16] perf kvm: reuse some code of perf_kvm__timerfd_create()

[David Ahern]

On 10/29/13 7:23 AM, Ingo Molnar wrote:
> * Ingo Molnar <mingo@xxxxxxxxxx> wrote:
>
> > * David Ahern <dsahern@xxxxxxxxx> wrote:
> >
> > > On 9/12/13 6:08 AM, Ingo Molnar wrote:
> > > > btw., I tried to build perf on a really old distro that has no timerfd.h,
> > > > and got:
> > >
> > > Right. I hit that last week or so with RHEL5 as a build server.
> > >
> > > timerfd was introduced before perf so any system with perf capability
> > > will also have timerfd. So the problem is strictly building perf on an
> > > older system. [...]
> >
> > I'm booting new kernels on an old system and I'm building it there.
> >
> > So it's new kernel, new perf source and binary, old userspace.
>
> Btw., this build failure is still there today:

Right, I put together a patch on Sept 14th and got distracted. I'll 
rebase to top of tree, update per the new feature tests and send it out 
today.

David

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