| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame^] | 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 MAY_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 | config IRQ_DOMAIN_DEBUG |
| 60 | bool "Expose hardware/virtual IRQ mapping via debugfs" |
| 61 | depends on IRQ_DOMAIN && DEBUG_FS |
| 62 | help |
| 63 | This option will show the mapping relationship between hardware irq |
| 64 | numbers and Linux irq numbers. The mapping is exposed via debugfs |
| 65 | in the file "irq_domain_mapping". |
| 66 | |
| 67 | If you don't know what this means you don't need it. |
| 68 | |
| 69 | # Support forced irq threading |
| 70 | config IRQ_FORCED_THREADING |
| 71 | bool |
| 72 | |
| 73 | config SPARSE_IRQ |
| 74 | bool "Support sparse irq numbering" if MAY_HAVE_SPARSE_IRQ |
| 75 | ---help--- |
| 76 | |
| 77 | Sparse irq numbering is useful for distro kernels that want |
| 78 | to define a high CONFIG_NR_CPUS value but still want to have |
| 79 | low kernel memory footprint on smaller machines. |
| 80 | |
| 81 | ( Sparse irqs can also be beneficial on NUMA boxes, as they spread |
| 82 | out the interrupt descriptors in a more NUMA-friendly way. ) |
| 83 | |
| 84 | If you don't know what to do here, say N. |
| 85 | |
| 86 | endmenu |
| 87 | endif |