percpu: fix percpu accessors to potentially !cpu_possible() cpus: m32r

Impact: CPU iterator bugfixes

Percpu areas are only allocated for possible cpus.  In general, you
shouldn't access random cpu's percpu areas.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Hirokazu Takata <takata@linux-m32r.org>
This commit is contained in:
Rusty Russell 2009-01-01 10:12:14 +10:30
commit 9e2f913df7