projects / linux-2.6-block.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 | ||
| 7b6ef126 TG |
20 | # Facility to allocate a hardware interrupt. This is legacy support |
| 21 | # and should not be used in new code. Use irq domains instead. | |
| 22 | config GENERIC_IRQ_LEGACY_ALLOC_HWIRQ | |
| 23 | bool | |
| 24 | ||
| c68fd4f3 | 25 | # Support for delayed migration from interrupt context |
| d9817ebe | 26 | config GENERIC_PENDING_IRQ |
| fd4afaf3 | 27 | bool |
| d9817ebe | 28 | |
| c68fd4f3 | 29 | # Alpha specific irq affinity mechanism |
| d9817ebe | 30 | config AUTO_IRQ_AFFINITY |
| fd4afaf3 | 31 | bool |
| d9817ebe | 32 | |
| c68fd4f3 | 33 | # Tasklet based software resend for pending interrupts on enable_irq() |
| d9817ebe | 34 | config HARDIRQS_SW_RESEND |
| fd4afaf3 | 35 | bool |
| d9817ebe | 36 | |
| c68fd4f3 | 37 | # Preflow handler support for fasteoi (sparc64) |
| 78129576 | 38 | config IRQ_PREFLOW_FASTEOI |
| fd4afaf3 | 39 | bool |
| 78129576 | 40 | |
| 0521c8fb TG |
41 | # Edge style eoi based handler (cell) |
| 42 | config IRQ_EDGE_EOI_HANDLER | |
| 43 | bool | |
| 44 | ||
| c42321c7 TG |
45 | # Generic configurable interrupt chip implementation |
| 46 | config GENERIC_IRQ_CHIP | |
| 47 | bool | |
| 923fa4ea | 48 | select IRQ_DOMAIN |
| c42321c7 | 49 | |
| 08a543ad GL |
50 | # Generic irq_domain hw <--> linux irq number translation |
| 51 | config IRQ_DOMAIN | |
| 52 | bool | |
| 53 | ||
| 092b2fb0 GL |
54 | config IRQ_DOMAIN_DEBUG |
| 55 | bool "Expose hardware/virtual IRQ mapping via debugfs" | |
| 56 | depends on IRQ_DOMAIN && DEBUG_FS | |
| 57 | help | |
| 58 | This option will show the mapping relationship between hardware irq | |
| 59 | numbers and Linux irq numbers. The mapping is exposed via debugfs | |
| ac5830a3 | 60 | in the file "irq_domain_mapping". |
| 092b2fb0 GL |
61 | |
| 62 | If you don't know what this means you don't need it. | |
| 63 | ||
| c68fd4f3 | 64 | # Support forced irq threading |
| 8d32a307 TG |
65 | config IRQ_FORCED_THREADING |
| 66 | bool | |
| 67 | ||
| d9817ebe | 68 | config SPARSE_IRQ |
| 2ed86b16 | 69 | bool "Support sparse irq numbering" if MAY_HAVE_SPARSE_IRQ |
| d9817ebe TG |
70 | ---help--- |
| 71 | ||
| 72 | Sparse irq numbering is useful for distro kernels that want | |
| 73 | to define a high CONFIG_NR_CPUS value but still want to have | |
| 74 | low kernel memory footprint on smaller machines. | |
| 75 | ||
| 76 | ( Sparse irqs can also be beneficial on NUMA boxes, as they spread | |
| 77 | out the interrupt descriptors in a more NUMA-friendly way. ) | |
| 78 | ||
| 79 | If you don't know what to do here, say N. | |
| 80 | ||
| 81 | endmenu |