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

Ingo Molnar
2013-09-12T13:41:05Z

* David Ahern <dsahern@gmail.com> 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.

Thanks,

Ingo