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Subject[PATCH 0/6] Final cpumask conversion patches for 4096+ cpus
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Finally, these 6 patches actually allocate short (nr_cpu_ids-bits) cpumasks
and nail down the lid so the compiler will find new abuses if they creep in.

For non-CONFIG_CPUMASK_OFFSTACK:
The only visible changes are that you have to use the accessors
mm_cpumask() and tsk_cpumask. They convert the bitmaps (moved to the end
of those structs) to 'struct cpumask *'.

For CONFIG_CPUMASK_OFFSTACK=y:
We allocate the mm and task_struct bitmaps short (nr_cpu_ids, rather
than the compile-time NR_CPUS). A couple of patches get rid of the
old-style cpus_ ops so noone uses them accidentally. We don't define
struct cpumask at all, which prevents accidental abuse. Finally, we
reduce cpumask_size() so our dynamically-allocated cpumasks are only
nr_cpu_ids big.

Cheers,
Rusty.


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