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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2014-09-30 17:37:52 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2014-10-09 09:14:02 +0200
commitfe0f49768d807a8fe6336b097feb8c4441951710 (patch)
tree5473c103c550bfa72871b4418521f7836a24d6b1 /arch/s390/kernel/smp.c
parenta9b1649917f0d2058022eda06082f9d299a06354 (diff)
downloadlinux-linaro-stable-fe0f49768d807a8fe6336b097feb8c4441951710.tar.gz
s390/nohz: use a per-cpu flag for arch_needs_cpu
Move the nohz_delay bit from the s390_idle data structure to the per-cpu flags. Clear the nohz delay flag in __cpu_disable and remove the cpu hotplug notifier that used to do this. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/smp.c')
-rw-r--r--arch/s390/kernel/smp.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index abec97b4ddbf..46317d6951c4 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -720,6 +720,7 @@ int __cpu_disable(void)
cregs[6] &= ~0xff000000UL; /* disable all I/O interrupts */
cregs[14] &= ~0x1f000000UL; /* disable most machine checks */
__ctl_load(cregs, 0, 15);
+ clear_cpu_flag(CIF_NOHZ_DELAY);
return 0;
}