Re: initialization of static per-cpu variables

[Rusty Russell <rusty@rustcorp.com.au>]

On Thursday 22 May 2008 04:28:02 Vegard Nossum wrote:
> Hi,
>
> I encountered this comment in kernel/softirq.c:
>
> /* Some compilers disobey section attribute on statics when not
>    initialized -- RR */
> static DEFINE_PER_CPU(struct tasklet_head, tasklet_vec) = { NULL };
> static DEFINE_PER_CPU(struct tasklet_head, tasklet_hi_vec) = { NULL };
>
> So I assume it's the combination of static and whatever section
> DFINE_PER_CPU puts the variable in which is the problem.
>
> However, there's a LOT of these "static DEFINE_PER_CPU" without any
> initializer in the rest of the code, e.g.:

Yep, it was an old toolchain used by Sparc: DaveM found this one.  As you say, 
it's ancient: I'm happy to queue a cleanup patch now everyone is on a modern 
compiler.

Thanks,
Rusty.