tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
fork
Configure Feed
Select the types of activity you want to include in your feed.
1# SPDX-License-Identifier: GPL-2.0-only
2menu "IRQ subsystem"
3# Options selectable by the architecture code
4
5# Make sparse irq Kconfig switch below available
6config MAY_HAVE_SPARSE_IRQ
7 bool
8
9# Legacy support, required for itanic
10config GENERIC_IRQ_LEGACY
11 bool
12
13# Enable the generic irq autoprobe mechanism
14config GENERIC_IRQ_PROBE
15 bool
16
17# Use the generic /proc/interrupts implementation
18config GENERIC_IRQ_SHOW
19 bool
20
21# Print level/edge extra information
22config GENERIC_IRQ_SHOW_LEVEL
23 bool
24
25# Supports effective affinity mask
26config GENERIC_IRQ_EFFECTIVE_AFF_MASK
27 bool
28
29# Support for delayed migration from interrupt context
30config GENERIC_PENDING_IRQ
31 bool
32
33# Support for generic irq migrating off cpu before the cpu is offline.
34config GENERIC_IRQ_MIGRATION
35 bool
36
37# Alpha specific irq affinity mechanism
38config AUTO_IRQ_AFFINITY
39 bool
40
41# Interrupt injection mechanism
42config GENERIC_IRQ_INJECTION
43 bool
44
45# Tasklet based software resend for pending interrupts on enable_irq()
46config HARDIRQS_SW_RESEND
47 bool
48
49# Edge style eoi based handler (cell)
50config IRQ_EDGE_EOI_HANDLER
51 bool
52
53# Generic configurable interrupt chip implementation
54config GENERIC_IRQ_CHIP
55 bool
56 select IRQ_DOMAIN
57
58# Generic irq_domain hw <--> linux irq number translation
59config IRQ_DOMAIN
60 bool
61
62# Support for simulated interrupts
63config IRQ_SIM
64 bool
65 select IRQ_WORK
66 select IRQ_DOMAIN
67
68# Support for hierarchical irq domains
69config IRQ_DOMAIN_HIERARCHY
70 bool
71 select IRQ_DOMAIN
72
73# Support for hierarchical fasteoi+edge and fasteoi+level handlers
74config IRQ_FASTEOI_HIERARCHY_HANDLERS
75 bool
76
77# Generic IRQ IPI support
78config GENERIC_IRQ_IPI
79 bool
80 select IRQ_DOMAIN_HIERARCHY
81
82# Generic MSI interrupt support
83config GENERIC_MSI_IRQ
84 bool
85
86# Generic MSI hierarchical interrupt domain support
87config GENERIC_MSI_IRQ_DOMAIN
88 bool
89 select IRQ_DOMAIN_HIERARCHY
90 select GENERIC_MSI_IRQ
91
92config IRQ_MSI_IOMMU
93 bool
94
95config HANDLE_DOMAIN_IRQ
96 bool
97
98config IRQ_TIMINGS
99 bool
100
101config GENERIC_IRQ_MATRIX_ALLOCATOR
102 bool
103
104config GENERIC_IRQ_RESERVATION_MODE
105 bool
106
107# Support forced irq threading
108config IRQ_FORCED_THREADING
109 bool
110
111config SPARSE_IRQ
112 bool "Support sparse irq numbering" if MAY_HAVE_SPARSE_IRQ
113 help
114
115 Sparse irq numbering is useful for distro kernels that want
116 to define a high CONFIG_NR_CPUS value but still want to have
117 low kernel memory footprint on smaller machines.
118
119 ( Sparse irqs can also be beneficial on NUMA boxes, as they spread
120 out the interrupt descriptors in a more NUMA-friendly way. )
121
122 If you don't know what to do here, say N.
123
124config GENERIC_IRQ_DEBUGFS
125 bool "Expose irq internals in debugfs"
126 depends on DEBUG_FS
127 select GENERIC_IRQ_INJECTION
128 default n
129 help
130
131 Exposes internal state information through debugfs. Mostly for
132 developers and debugging of hard to diagnose interrupt problems.
133
134 If you don't know what to do here, say N.
135
136endmenu
137
138config GENERIC_IRQ_MULTI_HANDLER
139 bool
140 help
141 Allow to specify the low level IRQ handler at run time.