From fe0f49768d807a8fe6336b097feb8c4441951710 Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Tue, 30 Sep 2014 17:37:52 +0200 Subject: 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 --- drivers/s390/cio/airq.c | 2 +- drivers/s390/cio/cio.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/s390') 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; -- cgit v1.2.3