projects / mirror_ubuntu-zesty-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 | |
| c940e01c TG |
8 | # Legacy support, required for itanic |
| 9 | config GENERIC_IRQ_LEGACY | |
| 10 | bool | |
| 11 | ||
| c68fd4f3 | 12 | # Enable the generic irq autoprobe mechanism |
| d9817ebe | 13 | config GENERIC_IRQ_PROBE |
| fd4afaf3 | 14 | bool |
| d9817ebe | 15 | |
| c68fd4f3 | 16 | # Use the generic /proc/interrupts implementation |
| c78b9b65 | 17 | config GENERIC_IRQ_SHOW |
| fd4afaf3 | 18 | bool |
| c78b9b65 | 19 | |
| ab7798ff TG |
20 | # Print level/edge extra information |
| 21 | config GENERIC_IRQ_SHOW_LEVEL | |
| 22 | bool | |
| 23 | ||
| 7b6ef126 TG |
24 | # Facility to allocate a hardware interrupt. This is legacy support |
| 25 | # and should not be used in new code. Use irq domains instead. | |
| 26 | config GENERIC_IRQ_LEGACY_ALLOC_HWIRQ | |
| 27 | bool | |
| 28 | ||
| c68fd4f3 | 29 | # Support for delayed migration from interrupt context |
| d9817ebe | 30 | config GENERIC_PENDING_IRQ |
| fd4afaf3 | 31 | bool |
| d9817ebe | 32 | |
| c68fd4f3 | 33 | # Alpha specific irq affinity mechanism |
| d9817ebe | 34 | config AUTO_IRQ_AFFINITY |
| fd4afaf3 | 35 | bool |
| d9817ebe | 36 | |
| c68fd4f3 | 37 | # Tasklet based software resend for pending interrupts on enable_irq() |
| d9817ebe | 38 | config HARDIRQS_SW_RESEND |
| fd4afaf3 | 39 | bool |
| d9817ebe | 40 | |
| c68fd4f3 | 41 | # Preflow handler support for fasteoi (sparc64) |
| 78129576 | 42 | config IRQ_PREFLOW_FASTEOI |
| fd4afaf3 | 43 | bool |
| 78129576 | 44 | |
| 0521c8fb TG |
45 | # Edge style eoi based handler (cell) |
| 46 | config IRQ_EDGE_EOI_HANDLER | |
| 47 | bool | |
| 48 | ||
| c42321c7 TG |
49 | # Generic configurable interrupt chip implementation |
| 50 | config GENERIC_IRQ_CHIP | |
| 51 | bool | |
| 923fa4ea | 52 | select IRQ_DOMAIN |
| c42321c7 | 53 | |
| 08a543ad GL |
54 | # Generic irq_domain hw <--> linux irq number translation |
| 55 | config IRQ_DOMAIN | |
| 56 | bool | |
| 57 | ||
| f8264e34 JL |
58 | # Support for hierarchical irq domains |
| 59 | config IRQ_DOMAIN_HIERARCHY | |
| 60 | bool | |
| 61 | select IRQ_DOMAIN | |
| 62 | ||
| 76ba59f8 MZ |
63 | config HANDLE_DOMAIN_IRQ |
| 64 | bool | |
| 65 | ||
| 092b2fb0 GL |
66 | config IRQ_DOMAIN_DEBUG |
| 67 | bool "Expose hardware/virtual IRQ mapping via debugfs" | |
| 68 | depends on IRQ_DOMAIN && DEBUG_FS | |
| 69 | help | |
| 70 | This option will show the mapping relationship between hardware irq | |
| 71 | numbers and Linux irq numbers. The mapping is exposed via debugfs | |
| ac5830a3 | 72 | in the file "irq_domain_mapping". |
| 092b2fb0 GL |
73 | |
| 74 | If you don't know what this means you don't need it. | |
| 75 | ||
| c68fd4f3 | 76 | # Support forced irq threading |
| 8d32a307 TG |
77 | config IRQ_FORCED_THREADING |
| 78 | bool | |
| 79 | ||
| d9817ebe | 80 | config SPARSE_IRQ |
| 2ed86b16 | 81 | bool "Support sparse irq numbering" if MAY_HAVE_SPARSE_IRQ |
| d9817ebe TG |
82 | ---help--- |
| 83 | ||
| 84 | Sparse irq numbering is useful for distro kernels that want | |
| 85 | to define a high CONFIG_NR_CPUS value but still want to have | |
| 86 | low kernel memory footprint on smaller machines. | |
| 87 | ||
| 88 | ( Sparse irqs can also be beneficial on NUMA boxes, as they spread | |
| 89 | out the interrupt descriptors in a more NUMA-friendly way. ) | |
| 90 | ||
| 91 | If you don't know what to do here, say N. | |
| 92 | ||
| 93 | endmenu |