genirq: Provide Kconfig

The generic irq Kconfig options are copied around all archs. Provide a
generic Kconfig file which can be included.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <20100927121843.217333624@linutronix.de>
Reviewed-by: H. Peter Anvin <hpa@zytor.com>
Reviewed-by: Ingo Molnar <mingo@elte.hu>

diff --git a/init/Kconfig b/init/Kconfig
index 2de5b1c..1df1a87 100644 (file)
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -332,6 +332,8 @@ config AUDIT_TREE
        depends on AUDITSYSCALL
        select FSNOTIFY
 
+source "kernel/irq/Kconfig"
+
 menu "RCU Subsystem"
 
 choice

diff --git a/kernel/irq/Kconfig b/kernel/irq/Kconfig
new file mode 100644 (file)
index 0000000..e0fc6cd
--- /dev/null
+++ b/kernel/irq/Kconfig
@@ -0,0 +1,54 @@
+config HAVE_GENERIC_HARDIRQS
+       def_bool n
+
+if HAVE_GENERIC_HARDIRQS
+menu "IRQ subsystem"
+#
+# Interrupt subsystem related configuration options
+#
+config GENERIC_HARDIRQS
+       def_bool y
+
+config GENERIC_HARDIRQS_NO__DO_IRQ
+       def_bool y
+
+# Options selectable by the architecture code
+config HAVE_SPARSE_IRQ
+       def_bool n
+
+config GENERIC_IRQ_PROBE
+       def_bool n
+
+config GENERIC_PENDING_IRQ
+       def_bool n
+
+if SPARSE_IRQ && NUMA
+config NUMA_IRQ_DESC
+       def_bool n
+endif
+
+config AUTO_IRQ_AFFINITY
+       def_bool n
+
+config IRQ_PER_CPU
+       def_bool n
+
+config HARDIRQS_SW_RESEND
+       def_bool n
+
+config SPARSE_IRQ
+       bool "Support sparse irq numbering"
+       depends on HAVE_SPARSE_IRQ
+       ---help---
+
+         Sparse irq numbering is useful for distro kernels that want
+         to define a high CONFIG_NR_CPUS value but still want to have
+         low kernel memory footprint on smaller machines.
+
+         ( Sparse irqs can also be beneficial on NUMA boxes, as they spread
+           out the interrupt descriptors in a more NUMA-friendly way. )
+
+         If you don't know what to do here, say N.
+
+endmenu
+endif