diff options
Diffstat (limited to 'kernel/irq/Kconfig')
| -rw-r--r-- | kernel/irq/Kconfig | 103 |
1 files changed, 71 insertions, 32 deletions
diff --git a/kernel/irq/Kconfig b/kernel/irq/Kconfig index 27c4e774071c..1b4254d19a73 100644 --- a/kernel/irq/Kconfig +++ b/kernel/irq/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0-only menu "IRQ subsystem" # Options selectable by the architecture code @@ -5,10 +6,6 @@ menu "IRQ subsystem" 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 @@ -23,11 +20,7 @@ config GENERIC_IRQ_SHOW_LEVEL # 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 + depends on SMP bool # Support for delayed migration from interrupt context @@ -42,18 +35,14 @@ config GENERIC_IRQ_MIGRATION config AUTO_IRQ_AFFINITY bool +# Interrupt injection mechanism +config GENERIC_IRQ_INJECTION + 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 @@ -63,40 +52,58 @@ config GENERIC_IRQ_CHIP config IRQ_DOMAIN bool +# Support for simulated interrupts +config IRQ_SIM + bool + select IRQ_WORK + select IRQ_DOMAIN + # Support for hierarchical irq domains config IRQ_DOMAIN_HIERARCHY bool select IRQ_DOMAIN +# Support for obsolete non-mapping irq domains +config IRQ_DOMAIN_NOMAP + 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 + depends on SMP + select IRQ_DOMAIN_HIERARCHY -# Generic MSI interrupt support -config GENERIC_MSI_IRQ +# Generic IRQ IPI Mux support +config GENERIC_IRQ_IPI_MUX bool + depends on SMP # Generic MSI hierarchical interrupt domain support -config GENERIC_MSI_IRQ_DOMAIN +config GENERIC_MSI_IRQ bool select IRQ_DOMAIN_HIERARCHY - select GENERIC_MSI_IRQ -config HANDLE_DOMAIN_IRQ +# irqchip drivers should select this if they call iommu_dma_prepare_msi() +config IRQ_MSI_IOMMU bool config IRQ_TIMINGS 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". +config GENERIC_IRQ_MATRIX_ALLOCATOR + bool + +config GENERIC_IRQ_RESERVATION_MODE + bool - If you don't know what this means you don't need it. +# Snapshot for interrupt statistics +config GENERIC_IRQ_STAT_SNAPSHOT + bool # Support forced irq threading config IRQ_FORCED_THREADING @@ -104,7 +111,7 @@ config IRQ_FORCED_THREADING config SPARSE_IRQ bool "Support sparse irq numbering" if MAY_HAVE_SPARSE_IRQ - ---help--- + help Sparse irq numbering is useful for distro kernels that want to define a high CONFIG_NR_CPUS value but still want to have @@ -118,12 +125,44 @@ config SPARSE_IRQ config GENERIC_IRQ_DEBUGFS bool "Expose irq internals in debugfs" depends on DEBUG_FS + select GENERIC_IRQ_INJECTION default n - ---help--- + 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 platform +config DEPRECATED_IRQ_CPU_ONOFFLINE + bool + depends on CAVIUM_OCTEON_SOC + default CAVIUM_OCTEON_SOC |