| Date | Wed, 07 May 2014 15:44:20 -0000 | From | Thomas Gleixner <> | Subject | [patch 27/32] s390: Avoid call to irq_reserve_irqs() |
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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 <tglx@linutronix.de> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: linux390@de.ibm.com --- arch/s390/kernel/irq.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
Index: tip/arch/s390/kernel/irq.c =================================================================== --- tip.orig/arch/s390/kernel/irq.c +++ tip/arch/s390/kernel/irq.c @@ -92,7 +92,6 @@ static const struct irq_class irqclass_s 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. */
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