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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 /drivers
parenta9b1649917f0d2058022eda06082f9d299a06354 (diff)
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 'drivers')
-rw-r--r--drivers/s390/cio/airq.c2
-rw-r--r--drivers/s390/cio/cio.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/drivers/s390/cio/airq.c b/drivers/s390/cio/airq.c
index 00bfbee0af9e..56eb4ee4deba 100644
--- a/drivers/s390/cio/airq.c
+++ b/drivers/s390/cio/airq.c
@@ -87,7 +87,7 @@ static irqreturn_t do_airq_interrupt(int irq, void *dummy)
struct airq_struct *airq;
struct hlist_head *head;
- __this_cpu_write(s390_idle.nohz_delay, 1);
+ set_cpu_flag(CIF_NOHZ_DELAY);
tpi_info = (struct tpi_info *) &get_irq_regs()->int_code;
head = &airq_lists[tpi_info->isc];
rcu_read_lock();
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index 2905d8b0ec95..d5a6f287d2fe 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -561,7 +561,7 @@ static irqreturn_t do_cio_interrupt(int irq, void *dummy)
struct subchannel *sch;
struct irb *irb;
- __this_cpu_write(s390_idle.nohz_delay, 1);
+ set_cpu_flag(CIF_NOHZ_DELAY);
tpi_info = (struct tpi_info *) &get_irq_regs()->int_code;
irb = &__get_cpu_var(cio_irb);
sch = (struct subchannel *)(unsigned long) tpi_info->intparm;

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