From 354e6f72d6fd5d3d2963efe030265972866cd969 Mon Sep 17 00:00:00 2001 From: eric miao Date: Fri, 25 Jun 2010 09:46:09 +0100 Subject: ARM: 6197/2: preliminary support for sparse IRQ So to allow NR_IRQS to be dynamic and platforms to specify the number of IRQs really needed. Acked-by: Paul Mundt Signed-off-by: Eric Miao Signed-off-by: Russell King --- arch/arm/Kconfig | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'arch/arm/Kconfig') diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 1f254bd..9a0ed36 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1289,6 +1289,18 @@ config HW_PERF_EVENTS Enable hardware performance counter support for perf events. If disabled, perf events will use software events only. +config SPARSE_IRQ + bool "Support sparse irq numbering" + depends on EXPERIMENTAL + help + This enables support for sparse irqs. This is useful in general + as most CPUs have a fairly sparse array of IRQ vectors, which + the irq_desc then maps directly on to. Systems with a high + number of off-chip IRQs will want to treat this as + experimental until they have been independently verified. + + If you don't know what to do here, say N. + source "mm/Kconfig" config LEDS -- cgit v1.1