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From: Andi Kleen on 10 Jun 2010 07:20

They are only useful with CONFIG_CPUMASK_OFFSTACK

Avoids hundreds of warnings with a gcc 4.6 -Wall build.

Cc: tglx(a)linutronix.de
Signed-off-by: Andi Kleen <ak(a)linux.intel.com>

---
include/linux/irq.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6.35-rc2-gcc/include/linux/irq.h
===================================================================
--- linux-2.6.35-rc2-gcc.orig/include/linux/irq.h
+++ linux-2.6.35-rc2-gcc/include/linux/irq.h
@@ -439,12 +439,12 @@ extern int set_irq_msi(unsigned int irq,
static inline bool alloc_desc_masks(struct irq_desc *desc, int node,
bool boot)
{
+#ifdef CONFIG_CPUMASK_OFFSTACK
gfp_t gfp = GFP_ATOMIC;

if (boot)
gfp = GFP_NOWAIT;

-#ifdef CONFIG_CPUMASK_OFFSTACK
if (!alloc_cpumask_var_node(&desc->affinity, gfp, node))
return false;

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Prev: [PATCH] [19/23] KVM: Fix unused but set warnings
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