diff options
Diffstat (limited to 'kernel/irq/Kconfig')
| -rw-r--r-- | kernel/irq/Kconfig | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/kernel/irq/Kconfig b/kernel/irq/Kconfig new file mode 100644 index 0000000000..2531f3496a --- /dev/null +++ b/kernel/irq/Kconfig @@ -0,0 +1,152 @@ +# 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 + depends on SMP + 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 + +# Interrupt injection mechanism +config GENERIC_IRQ_INJECTION + bool + +# Tasklet based software resend for pending interrupts on enable_irq() +config HARDIRQS_SW_RESEND + 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 + 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 IRQ IPI Mux support +config GENERIC_IRQ_IPI_MUX + bool + depends on SMP + +# Generic MSI hierarchical interrupt domain support +config GENERIC_MSI_IRQ + bool + select IRQ_DOMAIN_HIERARCHY + +config IRQ_MSI_IOMMU + 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 + 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. + +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 |