summaryrefslogtreecommitdiff
path: root/arch/arm/Kconfig
diff options
context:
space:
mode:
authoreric miao <eric.y.miao@gmail.com>2010-06-25 09:46:09 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-07-09 14:41:33 +0100
commit354e6f72d6fd5d3d2963efe030265972866cd969 (patch)
tree2ec7973825a42f4d15d233375c5db3b073658421 /arch/arm/Kconfig
parent309caa9cc6ff39d261264ec4ff10e29489afc8f8 (diff)
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 <lethal@linux-sh.org> Signed-off-by: Eric Miao <eric.y.miao@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/Kconfig')
-rw-r--r--arch/arm/Kconfig12
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 1f254bd6c937..9a0ed364d4f7 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