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authorMichael Holzheu <holzheu@linux.vnet.ibm.com>2014-04-15 11:25:28 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2014-05-20 08:58:45 +0200
commitf4192bf2dc5ae3b24ffb004e771397e737ef01e0 (patch)
tree3d37a4d431205fc6c6657b30af9f60c177b54743 /arch/s390/kernel/smp.c
parent0d234a28960413bfa91aa7030774ae7758fca44a (diff)
downloadlinux-linaro-stable-f4192bf2dc5ae3b24ffb004e771397e737ef01e0.tar.gz
s390/smp: Avoid busy loop after halt and "begin" on z/VM
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>
Diffstat (limited to 'arch/s390/kernel/smp.c')
-rw-r--r--arch/s390/kernel/smp.c9
1 files changed, 0 insertions, 9 deletions
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 4b8b7f6284d1..243c7e512600 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -405,15 +405,6 @@ void smp_send_stop(void)
}
/*
- * Stop the current cpu.
- */
-void smp_stop_cpu(void)
-{
- pcpu_sigp_retry(pcpu_devices + smp_processor_id(), SIGP_STOP, 0);
- for (;;) ;
-}
-
-/*
* This is the main routine where commands issued by other
* cpus are handled.
*/