kernel/irq/Kconfig

   1 # Select this to activate the generic irq options below
   2 config HAVE_GENERIC_HARDIRQS
   3         bool
   4
   5 if HAVE_GENERIC_HARDIRQS
   6 menu "IRQ subsystem"
   7 #
   8 # Interrupt subsystem related configuration options
   9 #
  10 config GENERIC_HARDIRQS
  11        def_bool y
  12
  13 # Options selectable by the architecture code
  14
  15 # Make sparse irq Kconfig switch below available
  16 config HAVE_SPARSE_IRQ
  17        bool
  18
  19 # Enable the generic irq autoprobe mechanism
  20 config GENERIC_IRQ_PROBE
  21         bool
  22
  23 # Use the generic /proc/interrupts implementation
  24 config GENERIC_IRQ_SHOW
  25        bool
  26
  27 # Print level/edge extra information
  28 config GENERIC_IRQ_SHOW_LEVEL
  29        bool
  30
  31 # Support for delayed migration from interrupt context
  32 config GENERIC_PENDING_IRQ
  33         bool
  34
  35 # Alpha specific irq affinity mechanism
  36 config AUTO_IRQ_AFFINITY
  37        bool
  38
  39 # Tasklet based software resend for pending interrupts on enable_irq()
  40 config HARDIRQS_SW_RESEND
  41        bool
  42
  43 # Preflow handler support for fasteoi (sparc64)
  44 config IRQ_PREFLOW_FASTEOI
  45        bool
  46
  47 # Edge style eoi based handler (cell)
  48 config IRQ_EDGE_EOI_HANDLER
  49        bool
  50
  51 # Generic configurable interrupt chip implementation
  52 config GENERIC_IRQ_CHIP
  53        bool
  54
  55 # Generic irq_domain hw <--> linux irq number translation
  56 config IRQ_DOMAIN
  57         bool
  58
  59 # Support forced irq threading
  60 config IRQ_FORCED_THREADING
  61        bool
  62
  63 config SPARSE_IRQ
  64         bool "Support sparse irq numbering"
  65         depends on HAVE_SPARSE_IRQ
  66         ---help---
  67
  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.
  71
  72           ( Sparse irqs can also be beneficial on NUMA boxes, as they spread
  73             out the interrupt descriptors in a more NUMA-friendly way. )
  74
  75           If you don't know what to do here, say N.
  76
  77 endmenu
  78 endif