From be4034016c11f8913d38fccf692007fab1c50be1 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 7 May 2014 15:44:20 +0000 Subject: s390: Avoid call to irq_reserve_irqs() There is no need to mark the lower interrupts as reserved in order to exclude them from dynamic allocation. Provide arch_dynirq_lower_bound() to exclude the lower space. Signed-off-by: Thomas Gleixner Reviewed-by: Grant Likely Cc: Tony Luck Cc: Peter Zijlstra Cc: Martin Schwidefsky Cc: Heiko Carstens Cc: linux390@de.ibm.com Link: http://lkml.kernel.org/r/20140507154339.811205235@linutronix.de Signed-off-by: Thomas Gleixner --- arch/s390/kernel/irq.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'arch/s390') diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c index 2fb099809d5d..99b0b09646ca 100644 --- a/arch/s390/kernel/irq.c +++ b/arch/s390/kernel/irq.c @@ -92,7 +92,6 @@ static const struct irq_class irqclass_sub_desc[NR_ARCH_IRQS] = { void __init init_IRQ(void) { - irq_reserve_irqs(0, THIN_INTERRUPT); init_cio_interrupts(); init_airq_interrupts(); init_ext_interrupts(); @@ -151,6 +150,11 @@ out: return 0; } +unsigned int arch_dynirq_lower_bound(unsigned int from) +{ + return from < THIN_INTERRUPT ? THIN_INTERRUPT : from; +} + /* * Switch to the asynchronous interrupt stack for softirq execution. */ -- cgit v1.2.1