Re: [PATCH] only irq-safe atomic ops

Robert Love
2002-02-23T23:13:36Z

On Sat, 2002-02-23 at 17:10, Andrew Morton wrote:

> ooh. me likee.
>
> #define smp_get_cpuid() ({ preempt_disable(); smp_processor_id(); })
> #define smp_put_cpuid() preempt_enable()
>
> Does rml likee?

Yah, that works.

All we need to do is wrap the smp_processor_id references (however many
- it does not matter) in preempt_disable ... preempt_enable. This does
that cleanly.

Robert Love