Re: [PATCH] lib/atomic64_test: do not build on non-atomic64 systems

From: Mike Frysinger
Date: Thu Oct 21 2010 - 18:24:15 EST


On Thursday, October 21, 2010 18:02:50 Andrew Morton wrote:
> On Sat, 16 Oct 2010 13:27:15 -0400 Mike Frysinger wrote:
> > If the arch doesn't provide atomic64 functionality (there are quite a
> > few), then don't bother trying to build this test.
>
> I don't get it. If the arch doesn't implement atomic64 then this file
> will get zillions of build errors, won't it?

... which is why i added the ifdef protection

> > diff --git a/lib/atomic64_test.c b/lib/atomic64_test.c
> > index 250ed11..0ac1a66 100644
> > --- a/lib/atomic64_test.c
> > +++ b/lib/atomic64_test.c
> > @@ -12,6 +12,8 @@
> >
> > #include <linux/kernel.h>
> > #include <asm/atomic.h>
> >
> > +#ifdef ATOMIC64_INIT
>
> hm, that's a bit lazy. It should really use a CONFIG_HAVE_ thing. What
> a pita.

ATOMIC64_INIT is required for atomic64 headers to provide, and having a
Kconfig knob doesnt gain anything else
-mike

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