[tip:irq/core] irq: Add irq_node() primitive

[tip-bot for Yinghai Lu]

Commit-ID:  5bfb5b51382f4bd01d9ced11503264d2cc74fe41
Gitweb:     http://git.kernel.org/tip/5bfb5b51382f4bd01d9ced11503264d2cc74fe41
Author:     Yinghai Lu <yinghai@xxxxxxxxxx>
AuthorDate: Wed, 26 Aug 2009 16:20:48 -0700
Committer:  Ingo Molnar <mingo@xxxxxxx>
CommitDate: Sat, 29 Aug 2009 15:53:00 +0200

irq: Add irq_node() primitive

... to return irq_desc node info without #ifdefs at the callsites.

Signed-off-by: Yinghai Lu <yinghai@xxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>
LKML-Reference: <4A95C350.8060308@xxxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>


---
 include/linux/irqnr.h |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/include/linux/irqnr.h b/include/linux/irqnr.h
index ec87b21..7bf89bc 100644
--- a/include/linux/irqnr.h
+++ b/include/linux/irqnr.h
@@ -41,6 +41,12 @@ extern struct irq_desc *irq_to_desc(unsigned int irq);
 			;						\
 		else
 
+#ifdef CONFIG_SMP
+#define irq_node(irq)	(irq_to_desc(irq)->node)
+#else
+#define irq_node(irq)	0
+#endif
+
 #endif /* CONFIG_GENERIC_HARDIRQS */
 
 #define for_each_irq_nr(irq)                   \
--
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