2010-09-27 20:45:59 +08:00
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menu "IRQ subsystem"
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# Options selectable by the architecture code
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2011-03-09 02:52:55 +08:00
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# Make sparse irq Kconfig switch below available
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2012-01-26 10:02:40 +08:00
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config MAY_HAVE_SPARSE_IRQ
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2011-02-17 21:39:05 +08:00
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bool
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2010-09-27 20:45:59 +08:00
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2014-05-07 23:44:22 +08:00
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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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2011-03-09 02:52:55 +08:00
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# Enable the generic irq autoprobe mechanism
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2010-09-27 20:45:59 +08:00
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config GENERIC_IRQ_PROBE
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2011-02-17 21:39:05 +08:00
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bool
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2010-09-27 20:45:59 +08:00
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2011-03-09 02:52:55 +08:00
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# Use the generic /proc/interrupts implementation
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2010-12-17 00:21:47 +08:00
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config GENERIC_IRQ_SHOW
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2011-02-17 21:39:05 +08:00
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bool
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2010-12-17 00:21:47 +08:00
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2011-03-25 23:48:50 +08:00
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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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2014-05-07 23:44:05 +08:00
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# Facility to allocate a hardware interrupt. This is legacy support
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# and should not be used in new code. Use irq domains instead.
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config GENERIC_IRQ_LEGACY_ALLOC_HWIRQ
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bool
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2011-03-09 02:52:55 +08:00
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# Support for delayed migration from interrupt context
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2010-09-27 20:45:59 +08:00
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config GENERIC_PENDING_IRQ
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2011-02-17 21:39:05 +08:00
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bool
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2010-09-27 20:45:59 +08:00
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2011-03-09 02:52:55 +08:00
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# Alpha specific irq affinity mechanism
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2010-09-27 20:45:59 +08:00
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config AUTO_IRQ_AFFINITY
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2011-02-17 21:39:05 +08:00
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bool
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2010-09-27 20:45:59 +08:00
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2011-03-09 02:52:55 +08:00
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# Tasklet based software resend for pending interrupts on enable_irq()
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2010-09-27 20:45:59 +08:00
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config HARDIRQS_SW_RESEND
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2011-02-17 21:39:05 +08:00
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bool
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2010-09-27 20:45:59 +08:00
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2011-03-09 02:52:55 +08:00
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# Preflow handler support for fasteoi (sparc64)
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2011-02-10 22:14:20 +08:00
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config IRQ_PREFLOW_FASTEOI
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2011-02-17 21:39:05 +08:00
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bool
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2011-02-10 22:14:20 +08:00
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2011-03-28 22:13:24 +08:00
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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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2011-05-03 00:16:22 +08:00
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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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2014-01-31 08:50:10 +08:00
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select IRQ_DOMAIN
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2011-05-03 00:16:22 +08:00
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2011-07-26 17:19:06 +08:00
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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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2012-03-30 04:10:30 +08:00
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config IRQ_DOMAIN_DEBUG
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bool "Expose hardware/virtual IRQ mapping via debugfs"
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depends on IRQ_DOMAIN && DEBUG_FS
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help
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This option will show the mapping relationship between hardware irq
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numbers and Linux irq numbers. The mapping is exposed via debugfs
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2012-04-10 20:25:42 +08:00
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in the file "irq_domain_mapping".
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2012-03-30 04:10:30 +08:00
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If you don't know what this means you don't need it.
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2011-03-09 02:52:55 +08:00
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# Support forced irq threading
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2011-02-24 07:52:23 +08:00
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config IRQ_FORCED_THREADING
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bool
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2010-09-27 20:45:59 +08:00
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config SPARSE_IRQ
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2012-01-26 10:02:40 +08:00
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bool "Support sparse irq numbering" if MAY_HAVE_SPARSE_IRQ
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2010-09-27 20:45:59 +08:00
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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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endmenu
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