1 # Select this to activate the generic irq options below
2 config HAVE_GENERIC_HARDIRQS
5 if HAVE_GENERIC_HARDIRQS
8 # Interrupt subsystem related configuration options
10 config GENERIC_HARDIRQS
13 # Options selectable by the architecture code
15 # Make sparse irq Kconfig switch below available
16 config HAVE_SPARSE_IRQ
19 # Enable the generic irq autoprobe mechanism
20 config GENERIC_IRQ_PROBE
23 # Use the generic /proc/interrupts implementation
24 config GENERIC_IRQ_SHOW
27 # Print level/edge extra information
28 config GENERIC_IRQ_SHOW_LEVEL
31 # Support for delayed migration from interrupt context
32 config GENERIC_PENDING_IRQ
35 # Alpha specific irq affinity mechanism
36 config AUTO_IRQ_AFFINITY
39 # Tasklet based software resend for pending interrupts on enable_irq()
40 config HARDIRQS_SW_RESEND
43 # Preflow handler support for fasteoi (sparc64)
44 config IRQ_PREFLOW_FASTEOI
47 # Edge style eoi based handler (cell)
48 config IRQ_EDGE_EOI_HANDLER
51 # Generic configurable interrupt chip implementation
52 config GENERIC_IRQ_CHIP
55 # Generic irq_domain hw <--> linux irq number translation
59 # Support forced irq threading
60 config IRQ_FORCED_THREADING
64 bool "Support sparse irq numbering"
65 depends on HAVE_SPARSE_IRQ
68 Sparse irq numbering is useful for distro kernels that want
69 to define a high CONFIG_NR_CPUS value but still want to have
70 low kernel memory footprint on smaller machines.
72 ( Sparse irqs can also be beneficial on NUMA boxes, as they spread
73 out the interrupt descriptors in a more NUMA-friendly way. )
75 If you don't know what to do here, say N.