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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166# SPDX-License-Identifier: GPL-2.0-onlymenu "IRQ subsystem"# Options selectable by the architecture code
# Make sparse irq Kconfig switch below availableconfig MAY_HAVE_SPARSE_IRQ bool
# Enable the generic irq autoprobe mechanismconfig GENERIC_IRQ_PROBE bool
# Use the generic /proc/interrupts implementationconfig GENERIC_IRQ_SHOW bool
# Print level/edge extra informationconfig GENERIC_IRQ_SHOW_LEVEL bool
# Supports effective affinity maskconfig GENERIC_IRQ_EFFECTIVE_AFF_MASK depends on SMP bool
# Support for delayed migration from interrupt contextconfig 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 mechanismconfig AUTO_IRQ_AFFINITY bool
# Interrupt injection mechanismconfig GENERIC_IRQ_INJECTION bool
# Tasklet based software resend for pending interrupts on enable_irq()config HARDIRQS_SW_RESEND bool
# Generic configurable interrupt chip implementationconfig GENERIC_IRQ_CHIP bool select IRQ_DOMAIN
# Generic irq_domain hw <--> linux irq number translationconfig IRQ_DOMAIN bool
# Support for simulated interruptsconfig IRQ_SIM bool select IRQ_WORK select IRQ_DOMAIN
# Support for hierarchical irq domainsconfig IRQ_DOMAIN_HIERARCHY bool select IRQ_DOMAIN
# Support for obsolete non-mapping irq domainsconfig IRQ_DOMAIN_NOMAP bool select IRQ_DOMAIN
# Support for hierarchical fasteoi+edge and fasteoi+level handlersconfig IRQ_FASTEOI_HIERARCHY_HANDLERS bool
# Generic IRQ IPI supportconfig GENERIC_IRQ_IPI bool depends on SMP select IRQ_DOMAIN_HIERARCHY
# Generic IRQ IPI Mux supportconfig GENERIC_IRQ_IPI_MUX bool depends on SMP
# Generic MSI hierarchical interrupt domain supportconfig GENERIC_MSI_IRQ bool select IRQ_DOMAIN_HIERARCHY
# irqchip drivers should select this if they call iommu_dma_prepare_msi()config IRQ_MSI_IOMMU bool
config GENERIC_IRQ_MATRIX_ALLOCATOR bool
config GENERIC_IRQ_RESERVATION_MODE bool
# Snapshot for interrupt statisticsconfig GENERIC_IRQ_STAT_SNAPSHOT bool
# Support forced irq threadingconfig 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 select GENERIC_IRQ_INJECTION 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.
# Clear forwarded VM interrupts during kexec.# This option ensures the kernel clears active states for interrupts# forwarded to virtual machines (VMs) during a machine kexec.config GENERIC_IRQ_KEXEC_CLEAR_VM_FORWARD bool
config IRQ_KUNIT_TEST bool "KUnit tests for IRQ management APIs" if !KUNIT_ALL_TESTS depends on KUNIT=y depends on SPARSE_IRQ default KUNIT_ALL_TESTS select IRQ_DOMAIN imply SMP help This option enables KUnit tests for the IRQ subsystem API. These are only for development and testing, not for regular kernel use cases.
If unsure, say N.
endmenu
config GENERIC_IRQ_MULTI_HANDLER bool help Allow to specify the low level IRQ handler at run time.
# Cavium Octeon is the last system to use this deprecated option# Do not even think of enabling this on any new platformconfig DEPRECATED_IRQ_CPU_ONOFFLINE bool depends on CAVIUM_OCTEON_SOC default CAVIUM_OCTEON_SOC