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

David Ahern
2013-09-12T13:34:45Z

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. Are you using a tarball created by one of the 'make
perf-*' options? Is the expectation that the resulting perf binary will
be used for both record and report paths?

I could compile out the feature if timerfd is not available or add a
compat layer in perf (e.g., if not defined, define it).

David