144 lines
3.1 KiB
Plaintext
144 lines
3.1 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
|
|
menu "IRQ subsystem"
|
|
# Options selectable by the architecture code
|
|
|
|
# Make sparse irq Kconfig switch below available
|
|
config MAY_HAVE_SPARSE_IRQ
|
|
bool
|
|
|
|
# Legacy support, required for itanic
|
|
config GENERIC_IRQ_LEGACY
|
|
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
|
|
|
|
# Supports effective affinity mask
|
|
config GENERIC_IRQ_EFFECTIVE_AFF_MASK
|
|
bool
|
|
|
|
# Facility to allocate a hardware interrupt. This is legacy support
|
|
# and should not be used in new code. Use irq domains instead.
|
|
config GENERIC_IRQ_LEGACY_ALLOC_HWIRQ
|
|
bool
|
|
|
|
# Support for delayed migration from interrupt context
|
|
config GENERIC_PENDING_IRQ
|
|
bool
|
|
|
|
# Support for generic irq migrating off cpu before the cpu is offline.
|
|
config GENERIC_IRQ_MIGRATION
|
|
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
|
|
|
|
# Support for simulated interrupts
|
|
config IRQ_SIM
|
|
bool
|
|
select IRQ_WORK
|
|
|
|
# Support for hierarchical irq domains
|
|
config IRQ_DOMAIN_HIERARCHY
|
|
bool
|
|
select IRQ_DOMAIN
|
|
|
|
# Support for hierarchical fasteoi+edge and fasteoi+level handlers
|
|
config IRQ_FASTEOI_HIERARCHY_HANDLERS
|
|
bool
|
|
|
|
# Generic IRQ IPI support
|
|
config GENERIC_IRQ_IPI
|
|
bool
|
|
|
|
# Generic MSI interrupt support
|
|
config GENERIC_MSI_IRQ
|
|
bool
|
|
|
|
# Generic MSI hierarchical interrupt domain support
|
|
config GENERIC_MSI_IRQ_DOMAIN
|
|
bool
|
|
select IRQ_DOMAIN_HIERARCHY
|
|
select GENERIC_MSI_IRQ
|
|
|
|
config IRQ_MSI_IOMMU
|
|
bool
|
|
|
|
config HANDLE_DOMAIN_IRQ
|
|
bool
|
|
|
|
config IRQ_TIMINGS
|
|
bool
|
|
|
|
config GENERIC_IRQ_MATRIX_ALLOCATOR
|
|
bool
|
|
|
|
config GENERIC_IRQ_RESERVATION_MODE
|
|
bool
|
|
|
|
# Support forced irq threading
|
|
config IRQ_FORCED_THREADING
|
|
bool
|
|
|
|
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.
|
|
|
|
config GENERIC_IRQ_DEBUGFS
|
|
bool "Expose irq internals in debugfs"
|
|
depends on DEBUG_FS
|
|
default n
|
|
---help---
|
|
|
|
Exposes internal state information through debugfs. Mostly for
|
|
developers and debugging of hard to diagnose interrupt problems.
|
|
|
|
If you don't know what to do here, say N.
|
|
|
|
endmenu
|
|
|
|
config GENERIC_IRQ_MULTI_HANDLER
|
|
bool
|
|
help
|
|
Allow to specify the low level IRQ handler at run time.
|