Re: [PATCH] scripts/checksyscalls.sh: only whine perf_counter_openwhen supported

From: Ingo Molnar
Date: Sat Jun 13 2009 - 17:06:43 EST



* Mike Frysinger <vapier.adi@xxxxxxxxx> wrote:

> On Fri, Jun 12, 2009 at 11:21, Ingo Molnar wrote:
> > * Mike Frysinger <vapier.adi@xxxxxxxxx> wrote:
> >> the perf counter code explicitly requires:
> >> ...
> >>  - support for atomic64 types (unless i missed something, x86 is the
> >> only 32bit system that supports these)
> >
> > A wrapper suffices - should probably be librarized into lib/.
>
> wonder if we can trick Arnd into doing that ...

FYI, Paul has posted the patches for generic atomic64_t today.

So the barrier of entry to perfcounters enablement is really low
now, even for 32-bit architectures without 64-bit atomic ops.

Ingo
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