menu "IRQ subsystem"
# Options selectable by the architecture code

# Make sparse irq Kconfig switch below available
config MAY_HAVE_SPARSE_IRQ
bool

# Enable the generic irq autoprobe mechanism
config GENERIC_IRQ_PROBE
bool

# Use the generic /proc/interrupts implementation
config GENERIC_IRQ_SHOW
bool

# Print level/edge extra information
config GENERIC_IRQ_SHOW_LEVEL
bool

# Support for delayed migration from interrupt context
config GENERIC_PENDING_IRQ
bool

# Alpha specific irq affinity mechanism
config AUTO_IRQ_AFFINITY
bool

# Tasklet based software resend for pending interrupts on enable_irq()
config HARDIRQS_SW_RESEND
bool

# Preflow handler support for fasteoi (sparc64)
config IRQ_PREFLOW_FASTEOI
bool

# Edge style eoi based handler (cell)
config IRQ_EDGE_EOI_HANDLER
bool

# Generic configurable interrupt chip implementation
config GENERIC_IRQ_CHIP
bool
select IRQ_DOMAIN

# Generic irq_domain hw <--> linux irq number translation
config IRQ_DOMAIN
bool

config IRQ_DOMAIN_DEBUG
bool "Expose hardware/virtual IRQ mapping via debugfs"
depends on IRQ_DOMAIN && DEBUG_FS
help
This option will show the mapping relationship between hardware irq
numbers and Linux irq numbers. The mapping is exposed via debugfs
in the file "irq_domain_mapping".

If you don't know what this means you don't need it.

# Support forced irq threading
config IRQ_FORCED_THREADING
bool

config IRQ_FORCED_THREADING_DEFAULT
bool "Use IRQ threading by default"
depends on IRQ_FORCED_THREADING

config SPARSE_IRQ
bool "Support sparse irq numbering" if MAY_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