Please don't do this for ARM.
> -static inline int atomic_dec_and_test(volatile atomic_t *v)
> -{
> - unsigned long flags;
> - int val;
> -
> - local_irq_save(flags);
> - val = v->counter;
> - v->counter = val -= 1;
> - local_irq_restore(flags);
> -
> - return val == 0;
> -}
This C code is carefully optimised to allow the compiler to order things
efficiently.
-- Russell King (rmk@arm.linux.org.uk) The developer of ARM Linux http://www.arm.linux.org.uk/personal/aboutme.html- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/