diff options
| author | Yinghai Lu <yinghai@kernel.org> | 2009-02-08 16:18:03 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-02-09 08:55:08 +0100 |
| commit | 0f3c2a89c1451cdf6328f99977bd9decd4f708e1 (patch) | |
| tree | 5f06396e409410e5d506f72fe6abebc376a5e689 /kernel/irq/handle.c | |
| parent | 4d87c5bec5389625d80b71108795aecf82cd670d (diff) | |
| download | linux-0f3c2a89c1451cdf6328f99977bd9decd4f708e1.tar.bz2 | |
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.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c index 48299a8a22f8..1b473e7569aa 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. |