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SubjectRe: [PATCH 14/16] perf kvm: reuse some code of perf_kvm__timerfd_create()
On 10/29/13 7:23 AM, Ingo Molnar wrote:
>
> * Ingo Molnar <mingo@kernel.org> wrote:
>
>> * 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.
>
> 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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