Re: [PATCH] s390 (9/9): no timer interrupts in idle.

[Martin Schwidefsky]

> > This would mean that all other arches need to do the above three
> > statements in rcu_start_batch. If this is acceptable we certainly
> > can introduce a global idle_cpu_mask. Where? sched.c?
>
> My hope was gcc would actually optimize it away if it was a CPP constant
> instead of a variable.

Now I got it. You want to introduce a generic idle_cpu_mask which is a
#define to CPU_MASK_NONE and only an exploiter would use a real variable.
This is just a matter of test. I'll give it a try.

blue skies,
   Martin

Linux/390 Design & Development, IBM Deutschland Entwicklung GmbH
Schönaicherstr. 220, D-71032 Böblingen, Telefon: 49 - (0)7031 - 16-2247
E-Mail: schwidefsky@xxxxxxxxxx


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