s390/topology: delay initialization of topology cpu masks

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There is no reason to initialize the topology cpu masks already while
setup_arch() is being called. It is sufficient to initialize the masks
before the scheduler becomes SMP aware.
Therefore a pre-SMP initcall aka early_initcall is suffucient.

This also allows to convert the cpu_topology array into a per cpu
variable with a later patch. Without this patch this wouldn't be
possible since the per cpu memory areas are not allocated while setup_arch
is executed.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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This commit is contained in:

Heiko Carstens 2015-02-04 14:21:31 +01:00 • committed by Martin Schwidefsky

parent 49253925c0

commit d05d15da18

3 changed files with 47 additions and 62 deletions

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8

arch/s390/include/asm/topology.h

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1

arch/s390/kernel/setup.c

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100

arch/s390/kernel/topology.c

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