s390/smp: Avoid busy loop after halt and "begin" on z/VM

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Currently the smp_stop_cpu() function for SMP kernels enters a busy
loop when "begin" is entered on the z/VM console after Linux is halted.
To avoid this behavior, use the non-SMP variant of smp_stop_cpu()
which stops the CPU again after "begin" is entered. As a side
effect we now have consistent behavior for SMP and non-SMP Linux.

Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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Michael Holzheu 2014-04-15 11:25:28 +02:00 • committed by Martin Schwidefsky

parent 0d234a2896

commit f4192bf2dc

2 changed files with 2 additions and 12 deletions

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5

arch/s390/include/asm/smp.h

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9

arch/s390/kernel/smp.c

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