Re: [PATCH] per-cpu patch 2/3

Rusty Russell (rusty@rustcorp.com.au)
Fri, 19 Jul 2002 11:36:20 +1000

In message <1027011926.1086.118.camel@sinai> you write:
> On Wed, 2002-07-17 at 20:48, Rusty Russell wrote:
> > Given the ongoing races with smp_processor_id() and preempt, this
> > makes sense to me. this_cpu() was too generic a name anyway.
>
> Very nice, although:
>
> How do you reenable preemption?

I think you are confused: this patch is an enhancement of the per-cpu
variable infrastructure. I was making an analogy with
smp_processor_id().

+#define get_cpu_var(var) ({ preempt_disable(); __get_cpu_var(var); })
+#define put_cpu_var(var) preempt_enable()

Clear?
Rusty.

--
  Anyone who quotes me in their sig is an idiot. -- Rusty Russell.
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