projects / mirror_ubuntu-jammy-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| d9817ebe | 1 | menu "IRQ subsystem" |
| d9817ebe | 2 | # Options selectable by the architecture code |
| c68fd4f3 TG |
3 | |
| 4 | # Make sparse irq Kconfig switch below available | |
| 2ed86b16 | 5 | config MAY_HAVE_SPARSE_IRQ |
| fd4afaf3 | 6 | bool |
| d9817ebe | 7 | |
| c68fd4f3 | 8 | # Enable the generic irq autoprobe mechanism |
| d9817ebe | 9 | config GENERIC_IRQ_PROBE |
| fd4afaf3 | 10 | bool |
| d9817ebe | 11 | |
| c68fd4f3 | 12 | # Use the generic /proc/interrupts implementation |
| c78b9b65 | 13 | config GENERIC_IRQ_SHOW |
| fd4afaf3 | 14 | bool |
| c78b9b65 | 15 | |
| ab7798ff TG |
16 | # Print level/edge extra information |
| 17 | config GENERIC_IRQ_SHOW_LEVEL | |
| 18 | bool | |
| 19 | ||
| c68fd4f3 | 20 | # Support for delayed migration from interrupt context |
| d9817ebe | 21 | config GENERIC_PENDING_IRQ |
| fd4afaf3 | 22 | bool |
| d9817ebe | 23 | |
| c68fd4f3 | 24 | # Alpha specific irq affinity mechanism |
| d9817ebe | 25 | config AUTO_IRQ_AFFINITY |
| fd4afaf3 | 26 | bool |
| d9817ebe | 27 | |
| c68fd4f3 | 28 | # Tasklet based software resend for pending interrupts on enable_irq() |
| d9817ebe | 29 | config HARDIRQS_SW_RESEND |
| fd4afaf3 | 30 | bool |
| d9817ebe | 31 | |
| c68fd4f3 | 32 | # Preflow handler support for fasteoi (sparc64) |
| 78129576 | 33 | config IRQ_PREFLOW_FASTEOI |
| fd4afaf3 | 34 | bool |
| 78129576 | 35 | |
| 0521c8fb TG |
36 | # Edge style eoi based handler (cell) |
| 37 | config IRQ_EDGE_EOI_HANDLER | |
| 38 | bool | |
| 39 | ||
| c42321c7 TG |
40 | # Generic configurable interrupt chip implementation |
| 41 | config GENERIC_IRQ_CHIP | |
| 42 | bool | |
| 923fa4ea | 43 | select IRQ_DOMAIN |
| c42321c7 | 44 | |
| 08a543ad GL |
45 | # Generic irq_domain hw <--> linux irq number translation |
| 46 | config IRQ_DOMAIN | |
| 47 | bool | |
| 48 | ||
| 092b2fb0 GL |
49 | config 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 | |
| ac5830a3 | 55 | in the file "irq_domain_mapping". |
| 092b2fb0 GL |
56 | |
| 57 | If you don't know what this means you don't need it. | |
| 58 | ||
| c68fd4f3 | 59 | # Support forced irq threading |
| 8d32a307 TG |
60 | config IRQ_FORCED_THREADING |
| 61 | bool | |
| 62 | ||
| d9817ebe | 63 | config SPARSE_IRQ |
| 2ed86b16 | 64 | bool "Support sparse irq numbering" if MAY_HAVE_SPARSE_IRQ |
| d9817ebe TG |
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 | ||
| 76 | endmenu |