Re: [LTP] Reg: LTP Latest Release.

[Chirag J. <ch...@li...>]

Hi Robert,

This link talks abt atomic operations.
Although it adheres to Intel ABI.
It should be arch independent, afais

http://gcc.gnu.org/onlinedocs/gcc-4.1.2/gcc/Atomic-Builtins.html

Probably the entire atomic_add function can be replaced by this.

* Robert Schwebel <r.s...@pe...> [2008-04-01 15:18:46]:

> Hi,
> 
> What do you mean with ...
> 
> On Tue, Apr 01, 2008 at 05:20:20PM +0530, Subrata Modak wrote:
> > Can we have something on the lines as suggested by Sripathi like:
> > 
> > static inline int atomic_add(int i, atomic_t *v)
> > {
> > #if defined(__x86_64__) || defined(__i386__)
> >         int __i;
> >  <snip>
> >         return i + __i;
> > #elif defined(__powerpc__)
> > #define ISYNC_ON_SMP    "\n\tisync\n"
> > #define LWSYNC_ON_SMP   __stringify(LWSYNC) "\n"
> >         int t;
> >         asm volatile(
> > <snip>
> >         : "cc", "memory");
> > 
> >         return t;
> > #else
> > #error <=======
> > #endif
> 
> ... "#error <======"? IMHO it is not allowed to error out here; either
> the module shouldn't be built at all, or it should be built and the test
> should fail.
> 
> Robert
> -- 
>  Dipl.-Ing. Robert Schwebel | http://www.pengutronix.de
>  Pengutronix - Linux Solutions for Science and Industry
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-- 
Cheers,
Chirag Jog