1# Select this to activate the generic irq options below
 2config HAVE_GENERIC_HARDIRQS
 3	bool
 4
 5if HAVE_GENERIC_HARDIRQS
 6menu "IRQ subsystem"
 7#
 8# Interrupt subsystem related configuration options
 9#
10config GENERIC_HARDIRQS
11       def_bool y
12
13# Options selectable by the architecture code
14
15# Make sparse irq Kconfig switch below available
16config HAVE_SPARSE_IRQ
17       bool
18
19# Enable the generic irq autoprobe mechanism
20config GENERIC_IRQ_PROBE
21	bool
22
23# Use the generic /proc/interrupts implementation
24config GENERIC_IRQ_SHOW
25       bool
26
27# Print level/edge extra information
28config GENERIC_IRQ_SHOW_LEVEL
29       bool
30
31# Support for delayed migration from interrupt context
32config GENERIC_PENDING_IRQ
33	bool
34
35# Alpha specific irq affinity mechanism
36config AUTO_IRQ_AFFINITY
37       bool
38
39# Tasklet based software resend for pending interrupts on enable_irq()
40config HARDIRQS_SW_RESEND
41       bool
42
43# Preflow handler support for fasteoi (sparc64)
44config IRQ_PREFLOW_FASTEOI
45       bool
46
47# Edge style eoi based handler (cell)
48config IRQ_EDGE_EOI_HANDLER
49       bool
50
51# Generic configurable interrupt chip implementation
52config GENERIC_IRQ_CHIP
53       bool
 
54
55# Generic irq_domain hw <--> linux irq number translation
56config IRQ_DOMAIN
57	bool
58
 
 
 
 
 
 
 
 
 
 
59# Support forced irq threading
60config IRQ_FORCED_THREADING
61       bool
62
63config 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
77endmenu
78endif

 
 
 
 
 
 1menu "IRQ subsystem"
 
 
 
 
 
 
 2# Options selectable by the architecture code
 3
 4# Make sparse irq Kconfig switch below available
 5config MAY_HAVE_SPARSE_IRQ
 6       bool
 7
 8# Enable the generic irq autoprobe mechanism
 9config GENERIC_IRQ_PROBE
10	bool
11
12# Use the generic /proc/interrupts implementation
13config GENERIC_IRQ_SHOW
14       bool
15
16# Print level/edge extra information
17config GENERIC_IRQ_SHOW_LEVEL
18       bool
19
20# Support for delayed migration from interrupt context
21config GENERIC_PENDING_IRQ
22	bool
23
24# Alpha specific irq affinity mechanism
25config AUTO_IRQ_AFFINITY
26       bool
27
28# Tasklet based software resend for pending interrupts on enable_irq()
29config HARDIRQS_SW_RESEND
30       bool
31
32# Preflow handler support for fasteoi (sparc64)
33config IRQ_PREFLOW_FASTEOI
34       bool
35
36# Edge style eoi based handler (cell)
37config IRQ_EDGE_EOI_HANDLER
38       bool
39
40# Generic configurable interrupt chip implementation
41config GENERIC_IRQ_CHIP
42       bool
43       select IRQ_DOMAIN
44
45# Generic irq_domain hw <--> linux irq number translation
46config IRQ_DOMAIN
47	bool
48
49config IRQ_DOMAIN_DEBUG
50	bool "Expose hardware/virtual IRQ mapping via debugfs"
51	depends on IRQ_DOMAIN && DEBUG_FS
52	help
53	  This option will show the mapping relationship between hardware irq
54	  numbers and Linux irq numbers. The mapping is exposed via debugfs
55	  in the file "irq_domain_mapping".
56
57	  If you don't know what this means you don't need it.
58
59# Support forced irq threading
60config IRQ_FORCED_THREADING
61       bool
62
63config SPARSE_IRQ
64	bool "Support sparse irq numbering" if MAY_HAVE_SPARSE_IRQ
 
65	---help---
66
67	  Sparse irq numbering is useful for distro kernels that want
68	  to define a high CONFIG_NR_CPUS value but still want to have
69	  low kernel memory footprint on smaller machines.
70
71	  ( Sparse irqs can also be beneficial on NUMA boxes, as they spread
72	    out the interrupt descriptors in a more NUMA-friendly way. )
73
74	  If you don't know what to do here, say N.
75
76endmenu