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146 lines
3.1 KiB
146 lines
3.1 KiB
# SPDX-License-Identifier: GPL-2.0-only |
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menu "IRQ subsystem" |
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# Options selectable by the architecture code |
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# Make sparse irq Kconfig switch below available |
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config MAY_HAVE_SPARSE_IRQ |
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bool |
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# Legacy support, required for itanic |
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config GENERIC_IRQ_LEGACY |
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bool |
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# Enable the generic irq autoprobe mechanism |
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config GENERIC_IRQ_PROBE |
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bool |
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# Use the generic /proc/interrupts implementation |
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config GENERIC_IRQ_SHOW |
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bool |
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# Print level/edge extra information |
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config GENERIC_IRQ_SHOW_LEVEL |
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bool |
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# Supports effective affinity mask |
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config GENERIC_IRQ_EFFECTIVE_AFF_MASK |
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bool |
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# Support for delayed migration from interrupt context |
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config GENERIC_PENDING_IRQ |
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bool |
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# Support for generic irq migrating off cpu before the cpu is offline. |
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config GENERIC_IRQ_MIGRATION |
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bool |
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# Alpha specific irq affinity mechanism |
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config AUTO_IRQ_AFFINITY |
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bool |
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# Interrupt injection mechanism |
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config GENERIC_IRQ_INJECTION |
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bool |
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# Tasklet based software resend for pending interrupts on enable_irq() |
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config HARDIRQS_SW_RESEND |
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bool |
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# Edge style eoi based handler (cell) |
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config IRQ_EDGE_EOI_HANDLER |
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bool |
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# Generic configurable interrupt chip implementation |
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config GENERIC_IRQ_CHIP |
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bool |
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select IRQ_DOMAIN |
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# Generic irq_domain hw <--> linux irq number translation |
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config IRQ_DOMAIN |
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bool |
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# Support for simulated interrupts |
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config IRQ_SIM |
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bool |
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select IRQ_WORK |
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select IRQ_DOMAIN |
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# Support for hierarchical irq domains |
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config IRQ_DOMAIN_HIERARCHY |
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bool |
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select IRQ_DOMAIN |
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# Support for obsolete non-mapping irq domains |
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config IRQ_DOMAIN_NOMAP |
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bool |
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select IRQ_DOMAIN |
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# Support for hierarchical fasteoi+edge and fasteoi+level handlers |
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config IRQ_FASTEOI_HIERARCHY_HANDLERS |
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bool |
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# Generic IRQ IPI support |
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config GENERIC_IRQ_IPI |
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bool |
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select IRQ_DOMAIN_HIERARCHY |
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# Generic MSI interrupt support |
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config GENERIC_MSI_IRQ |
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bool |
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# Generic MSI hierarchical interrupt domain support |
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config GENERIC_MSI_IRQ_DOMAIN |
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bool |
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select IRQ_DOMAIN_HIERARCHY |
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select GENERIC_MSI_IRQ |
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config IRQ_MSI_IOMMU |
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bool |
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config HANDLE_DOMAIN_IRQ |
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bool |
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config IRQ_TIMINGS |
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bool |
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config GENERIC_IRQ_MATRIX_ALLOCATOR |
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bool |
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config GENERIC_IRQ_RESERVATION_MODE |
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bool |
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# Support forced irq threading |
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config IRQ_FORCED_THREADING |
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bool |
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config SPARSE_IRQ |
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bool "Support sparse irq numbering" if MAY_HAVE_SPARSE_IRQ |
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help |
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Sparse irq numbering is useful for distro kernels that want |
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to define a high CONFIG_NR_CPUS value but still want to have |
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low kernel memory footprint on smaller machines. |
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( Sparse irqs can also be beneficial on NUMA boxes, as they spread |
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out the interrupt descriptors in a more NUMA-friendly way. ) |
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If you don't know what to do here, say N. |
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config GENERIC_IRQ_DEBUGFS |
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bool "Expose irq internals in debugfs" |
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depends on DEBUG_FS |
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select GENERIC_IRQ_INJECTION |
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default n |
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help |
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Exposes internal state information through debugfs. Mostly for |
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developers and debugging of hard to diagnose interrupt problems. |
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If you don't know what to do here, say N. |
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endmenu |
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config GENERIC_IRQ_MULTI_HANDLER |
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bool |
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help |
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Allow to specify the low level IRQ handler at run time.
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