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s390/smp: Avoid busy loop after halt and "begin" on z/VM
authorMichael Holzheu <holzheu@linux.vnet.ibm.com>
Tue, 15 Apr 2014 09:25:28 +0000 (11:25 +0200)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Tue, 20 May 2014 06:58:45 +0000 (08:58 +0200)
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>
arch/s390/include/asm/smp.h patch | blob | history
arch/s390/kernel/smp.c patch | blob | history

diff --cc arch/s390/include/asm/smp.h
Simple merge
diff --cc arch/s390/kernel/smp.c
Simple merge
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