On Wed, 2013-04-03 at 15:10 +0200, Christian Ruppert wrote: > This patch adds implicit memory barriers to irqsave/restore functions > of > the ARC architecture port in line with what is done in other > architectures.
> diff --git a/arch/arc/include/asm/irqflags.h > b/arch/arc/include/asm/irqflags.h > index ccd8480..c8147d1 100644 > --- a/arch/arc/include/asm/irqflags.h > +++ b/arch/arc/include/asm/irqflags.h > @@ -39,7 +39,7 @@ static inline long arch_local_irq_save(void) > " flag.nz %0 \n" > : "=r"(temp), "=r"(flags) > : "n"((STATUS_E1_MASK | STATUS_E2_MASK)) > - : "cc"); > + : "memory", "cc"); That's not a memory barrier, that a memory clobber, aka a compiler barrier. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
