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TOMOYO Linux Cross Reference
Linux/kernel/irq/Kconfig

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Diff markup

Differences between /kernel/irq/Kconfig (Version linux-6.12-rc7) and /kernel/irq/Kconfig (Version linux-5.16.20)


  1 # SPDX-License-Identifier: GPL-2.0-only             1 # SPDX-License-Identifier: GPL-2.0-only
  2 menu "IRQ subsystem"                                2 menu "IRQ subsystem"
  3 # Options selectable by the architecture code       3 # Options selectable by the architecture code
  4                                                     4 
  5 # Make sparse irq Kconfig switch below availab      5 # Make sparse irq Kconfig switch below available
  6 config MAY_HAVE_SPARSE_IRQ                          6 config MAY_HAVE_SPARSE_IRQ
  7        bool                                         7        bool
  8                                                     8 
  9 # Legacy support, required for itanic               9 # Legacy support, required for itanic
 10 config GENERIC_IRQ_LEGACY                          10 config GENERIC_IRQ_LEGACY
 11        bool                                        11        bool
 12                                                    12 
 13 # Enable the generic irq autoprobe mechanism       13 # Enable the generic irq autoprobe mechanism
 14 config GENERIC_IRQ_PROBE                           14 config GENERIC_IRQ_PROBE
 15         bool                                       15         bool
 16                                                    16 
 17 # Use the generic /proc/interrupts implementat     17 # Use the generic /proc/interrupts implementation
 18 config GENERIC_IRQ_SHOW                            18 config GENERIC_IRQ_SHOW
 19        bool                                        19        bool
 20                                                    20 
 21 # Print level/edge extra information               21 # Print level/edge extra information
 22 config GENERIC_IRQ_SHOW_LEVEL                      22 config GENERIC_IRQ_SHOW_LEVEL
 23        bool                                        23        bool
 24                                                    24 
 25 # Supports effective affinity mask                 25 # Supports effective affinity mask
 26 config GENERIC_IRQ_EFFECTIVE_AFF_MASK              26 config GENERIC_IRQ_EFFECTIVE_AFF_MASK
 27        depends on SMP                          << 
 28        bool                                        27        bool
 29                                                    28 
 30 # Support for delayed migration from interrupt     29 # Support for delayed migration from interrupt context
 31 config GENERIC_PENDING_IRQ                         30 config GENERIC_PENDING_IRQ
 32         bool                                       31         bool
 33                                                    32 
 34 # Support for generic irq migrating off cpu be     33 # Support for generic irq migrating off cpu before the cpu is offline.
 35 config GENERIC_IRQ_MIGRATION                       34 config GENERIC_IRQ_MIGRATION
 36         bool                                       35         bool
 37                                                    36 
 38 # Alpha specific irq affinity mechanism            37 # Alpha specific irq affinity mechanism
 39 config AUTO_IRQ_AFFINITY                           38 config AUTO_IRQ_AFFINITY
 40        bool                                        39        bool
 41                                                    40 
 42 # Interrupt injection mechanism                    41 # Interrupt injection mechanism
 43 config GENERIC_IRQ_INJECTION                       42 config GENERIC_IRQ_INJECTION
 44         bool                                       43         bool
 45                                                    44 
 46 # Tasklet based software resend for pending in     45 # Tasklet based software resend for pending interrupts on enable_irq()
 47 config HARDIRQS_SW_RESEND                          46 config HARDIRQS_SW_RESEND
 48        bool                                        47        bool
 49                                                    48 
 50 # Edge style eoi based handler (cell)              49 # Edge style eoi based handler (cell)
 51 config IRQ_EDGE_EOI_HANDLER                        50 config IRQ_EDGE_EOI_HANDLER
 52        bool                                        51        bool
 53                                                    52 
 54 # Generic configurable interrupt chip implemen     53 # Generic configurable interrupt chip implementation
 55 config GENERIC_IRQ_CHIP                            54 config GENERIC_IRQ_CHIP
 56        bool                                        55        bool
 57        select IRQ_DOMAIN                           56        select IRQ_DOMAIN
 58                                                    57 
 59 # Generic irq_domain hw <--> linux irq number      58 # Generic irq_domain hw <--> linux irq number translation
 60 config IRQ_DOMAIN                                  59 config IRQ_DOMAIN
 61         bool                                       60         bool
 62                                                    61 
 63 # Support for simulated interrupts                 62 # Support for simulated interrupts
 64 config IRQ_SIM                                     63 config IRQ_SIM
 65         bool                                       64         bool
 66         select IRQ_WORK                            65         select IRQ_WORK
 67         select IRQ_DOMAIN                          66         select IRQ_DOMAIN
 68                                                    67 
 69 # Support for hierarchical irq domains             68 # Support for hierarchical irq domains
 70 config IRQ_DOMAIN_HIERARCHY                        69 config IRQ_DOMAIN_HIERARCHY
 71         bool                                       70         bool
 72         select IRQ_DOMAIN                          71         select IRQ_DOMAIN
 73                                                    72 
 74 # Support for obsolete non-mapping irq domains     73 # Support for obsolete non-mapping irq domains
 75 config IRQ_DOMAIN_NOMAP                            74 config IRQ_DOMAIN_NOMAP
 76         bool                                       75         bool
 77         select IRQ_DOMAIN                          76         select IRQ_DOMAIN
 78                                                    77 
 79 # Support for hierarchical fasteoi+edge and fa     78 # Support for hierarchical fasteoi+edge and fasteoi+level handlers
 80 config IRQ_FASTEOI_HIERARCHY_HANDLERS              79 config IRQ_FASTEOI_HIERARCHY_HANDLERS
 81         bool                                       80         bool
 82                                                    81 
 83 # Generic IRQ IPI support                          82 # Generic IRQ IPI support
 84 config GENERIC_IRQ_IPI                             83 config GENERIC_IRQ_IPI
 85         bool                                       84         bool
 86         depends on SMP                         << 
 87         select IRQ_DOMAIN_HIERARCHY                85         select IRQ_DOMAIN_HIERARCHY
 88                                                    86 
 89 # Generic IRQ IPI Mux support                  !!  87 # Generic MSI interrupt support
 90 config GENERIC_IRQ_IPI_MUX                     !!  88 config GENERIC_MSI_IRQ
 91         bool                                       89         bool
 92         depends on SMP                         << 
 93                                                    90 
 94 # Generic MSI hierarchical interrupt domain su     91 # Generic MSI hierarchical interrupt domain support
 95 config GENERIC_MSI_IRQ                         !!  92 config GENERIC_MSI_IRQ_DOMAIN
 96         bool                                       93         bool
 97         select IRQ_DOMAIN_HIERARCHY                94         select IRQ_DOMAIN_HIERARCHY
                                                   >>  95         select GENERIC_MSI_IRQ
 98                                                    96 
 99 config IRQ_MSI_IOMMU                               97 config IRQ_MSI_IOMMU
100         bool                                       98         bool
101                                                    99 
102 config IRQ_TIMINGS                                100 config IRQ_TIMINGS
103         bool                                      101         bool
104                                                   102 
105 config GENERIC_IRQ_MATRIX_ALLOCATOR               103 config GENERIC_IRQ_MATRIX_ALLOCATOR
106         bool                                      104         bool
107                                                   105 
108 config GENERIC_IRQ_RESERVATION_MODE               106 config GENERIC_IRQ_RESERVATION_MODE
109         bool                                   << 
110                                                << 
111 # Snapshot for interrupt statistics            << 
112 config GENERIC_IRQ_STAT_SNAPSHOT               << 
113         bool                                      107         bool
114                                                   108 
115 # Support forced irq threading                    109 # Support forced irq threading
116 config IRQ_FORCED_THREADING                       110 config IRQ_FORCED_THREADING
117        bool                                       111        bool
118                                                   112 
119 config SPARSE_IRQ                                 113 config SPARSE_IRQ
120         bool "Support sparse irq numbering" if    114         bool "Support sparse irq numbering" if MAY_HAVE_SPARSE_IRQ
121         help                                      115         help
122                                                   116 
123           Sparse irq numbering is useful for d    117           Sparse irq numbering is useful for distro kernels that want
124           to define a high CONFIG_NR_CPUS valu    118           to define a high CONFIG_NR_CPUS value but still want to have
125           low kernel memory footprint on small    119           low kernel memory footprint on smaller machines.
126                                                   120 
127           ( Sparse irqs can also be beneficial    121           ( Sparse irqs can also be beneficial on NUMA boxes, as they spread
128             out the interrupt descriptors in a    122             out the interrupt descriptors in a more NUMA-friendly way. )
129                                                   123 
130           If you don't know what to do here, s    124           If you don't know what to do here, say N.
131                                                   125 
132 config GENERIC_IRQ_DEBUGFS                        126 config GENERIC_IRQ_DEBUGFS
133         bool "Expose irq internals in debugfs"    127         bool "Expose irq internals in debugfs"
134         depends on DEBUG_FS                       128         depends on DEBUG_FS
135         select GENERIC_IRQ_INJECTION              129         select GENERIC_IRQ_INJECTION
136         default n                                 130         default n
137         help                                      131         help
138                                                   132 
139           Exposes internal state information t    133           Exposes internal state information through debugfs. Mostly for
140           developers and debugging of hard to     134           developers and debugging of hard to diagnose interrupt problems.
141                                                   135 
142           If you don't know what to do here, s    136           If you don't know what to do here, say N.
143                                                   137 
144 endmenu                                           138 endmenu
145                                                   139 
146 config GENERIC_IRQ_MULTI_HANDLER                  140 config GENERIC_IRQ_MULTI_HANDLER
147         bool                                      141         bool
148         help                                      142         help
149           Allow to specify the low level IRQ h    143           Allow to specify the low level IRQ handler at run time.
150                                                   144 
151 # Cavium Octeon is the last system to use this    145 # Cavium Octeon is the last system to use this deprecated option
152 # Do not even think of enabling this on any ne    146 # Do not even think of enabling this on any new platform
153 config DEPRECATED_IRQ_CPU_ONOFFLINE               147 config DEPRECATED_IRQ_CPU_ONOFFLINE
154         bool                                      148         bool
155         depends on CAVIUM_OCTEON_SOC              149         depends on CAVIUM_OCTEON_SOC
156         default CAVIUM_OCTEON_SOC                 150         default CAVIUM_OCTEON_SOC
                                                      

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