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 config GENERIC_HARDIRQS_NO_COMPAT
16 # Options selectable by the architecture code
18 # Make sparse irq Kconfig switch below available
19 config HAVE_SPARSE_IRQ
22 # Enable the generic irq autoprobe mechanism
23 config GENERIC_IRQ_PROBE
26 # Use the generic /proc/interrupts implementation
27 config GENERIC_IRQ_SHOW
30 # Print level/edge extra information
31 config GENERIC_IRQ_SHOW_LEVEL
34 # Support for delayed migration from interrupt context
35 config GENERIC_PENDING_IRQ
38 # Alpha specific irq affinity mechanism
39 config AUTO_IRQ_AFFINITY
42 # Tasklet based software resend for pending interrupts on enable_irq()
43 config HARDIRQS_SW_RESEND
46 # Preflow handler support for fasteoi (sparc64)
47 config IRQ_PREFLOW_FASTEOI
50 # Edge style eoi based handler (cell)
51 config IRQ_EDGE_EOI_HANDLER
54 # Support forced irq threading
55 config IRQ_FORCED_THREADING
59 bool "Support sparse irq numbering"
60 depends on HAVE_SPARSE_IRQ
63 Sparse irq numbering is useful for distro kernels that want
64 to define a high CONFIG_NR_CPUS value but still want to have
65 low kernel memory footprint on smaller machines.
67 ( Sparse irqs can also be beneficial on NUMA boxes, as they spread
68 out the interrupt descriptors in a more NUMA-friendly way. )
70 If you don't know what to do here, say N.