Subject: Re: [PATCH] cpumask: use mm_cpumask() wrapper: powerpc

From: Rusty Russell <[email-masked]>
Date: Mon, 23 Mar 2009 16:13:22 +1030

On Friday 20 March 2009 17:06:17 Benjamin Herrenschmidt wrote:
> On Mon, 2009-03-16 at 14:46 +1030, Rusty Russell wrote:
> > Makes code futureproof against the impending change to mm->cpu_vm_mask.
> > 
> > It's also a chance to use the new cpumask_ ops which take a pointer
> > (the older ones are deprecated, but there's no hurry for arch code).
> 
> Boom :-)
> 
> In file included from /home/benh/linux-powerpc-test/arch/powerpc/kernel/vdso.c:30:
> /home/benh/linux-powerpc-test/arch/powerpc/include/asm/mmu_context.h: In function ‘switch_mm’:
> /home/benh/linux-powerpc-test/arch/powerpc/include/asm/mmu_context.h:34: error: implicit declaration of function ‘mm_cpumask’
> /home/benh/linux-powerpc-test/arch/powerpc/include/asm/mmu_context.h:34: warning: passing argument 2 of ‘cpumask_set_cpu’ makes pointer from integer without a cast

Hmm, I think you need to pull from Linus?  He only added the accessor
in "45e575ab (Rusty Russell       2009-03-12 14:35:44 -0600 281)"; you
can't get struct mm_struct without seeing mm_cpumask.

Thanks,
Rusty.