summaryrefslogtreecommitdiff
path: root/kernel/irq/handle.c
diff options
context:
space:
mode:
authorYinghai Lu <yinghai@kernel.org>2009-02-09 00:18:03 (GMT)
committerIngo Molnar <mingo@elte.hu>2009-02-09 07:55:08 (GMT)
commit0f3c2a89c1451cdf6328f99977bd9decd4f708e1 (patch)
tree5f06396e409410e5d506f72fe6abebc376a5e689 /kernel/irq/handle.c
parent4d87c5bec5389625d80b71108795aecf82cd670d (diff)
downloadlinux-0f3c2a89c1451cdf6328f99977bd9decd4f708e1.tar.xz
irq: clear kstat_irqs
Impact: get correct kstat_irqs [/proc/interrupts] for msi/msi-x etc need to call clear_kstat_irqs(), so when we reuse that irq_desc, we get correct kstat in /proc/interrupts. This makes /proc/interrupts not have <NULL> entries. Don't need to worry about arch that doesn't support genirq, because they will not call dynamic_irq_cleanup(). v2: simplify and make clear_kstat_irqs more robust Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/irq/handle.c')
-rw-r--r--kernel/irq/handle.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index 48299a8..1b473e7 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -242,6 +242,11 @@ struct irq_desc *irq_to_desc_alloc_cpu(unsigned int irq, int cpu)
}
#endif /* !CONFIG_SPARSE_IRQ */
+void clear_kstat_irqs(struct irq_desc *desc)
+{
+ memset(desc->kstat_irqs, 0, nr_cpu_ids * sizeof(*(desc->kstat_irqs)));
+}
+
/*
* What should we do if we get a hw irq event on an illegal vector?
* Each architecture has to answer this themself.