Thomas Gleixner | d9817eb | 2010-09-27 12:45:59 +0000 | [diff] [blame] | 1 | menu "IRQ subsystem" |
Thomas Gleixner | d9817eb | 2010-09-27 12:45:59 +0000 | [diff] [blame] | 2 | # Options selectable by the architecture code |
Thomas Gleixner | c68fd4f | 2011-03-08 19:52:55 +0100 | [diff] [blame] | 3 | |
| 4 | # Make sparse irq Kconfig switch below available |
Rob Herring | 2ed86b1 | 2012-01-25 20:02:40 -0600 | [diff] [blame] | 5 | config MAY_HAVE_SPARSE_IRQ |
Jan Beulich | fd4afaf | 2011-02-17 13:39:05 +0000 | [diff] [blame] | 6 | bool |
Thomas Gleixner | d9817eb | 2010-09-27 12:45:59 +0000 | [diff] [blame] | 7 | |
Thomas Gleixner | c940e01 | 2014-05-07 15:44:22 +0000 | [diff] [blame] | 8 | # Legacy support, required for itanic |
| 9 | config GENERIC_IRQ_LEGACY |
| 10 | bool |
| 11 | |
Thomas Gleixner | c68fd4f | 2011-03-08 19:52:55 +0100 | [diff] [blame] | 12 | # Enable the generic irq autoprobe mechanism |
Thomas Gleixner | d9817eb | 2010-09-27 12:45:59 +0000 | [diff] [blame] | 13 | config GENERIC_IRQ_PROBE |
Jan Beulich | fd4afaf | 2011-02-17 13:39:05 +0000 | [diff] [blame] | 14 | bool |
Thomas Gleixner | d9817eb | 2010-09-27 12:45:59 +0000 | [diff] [blame] | 15 | |
Thomas Gleixner | c68fd4f | 2011-03-08 19:52:55 +0100 | [diff] [blame] | 16 | # Use the generic /proc/interrupts implementation |
Thomas Gleixner | c78b9b6 | 2010-12-16 17:21:47 +0100 | [diff] [blame] | 17 | config GENERIC_IRQ_SHOW |
Jan Beulich | fd4afaf | 2011-02-17 13:39:05 +0000 | [diff] [blame] | 18 | bool |
Thomas Gleixner | c78b9b6 | 2010-12-16 17:21:47 +0100 | [diff] [blame] | 19 | |
Thomas Gleixner | ab7798f | 2011-03-25 16:48:50 +0100 | [diff] [blame] | 20 | # Print level/edge extra information |
| 21 | config GENERIC_IRQ_SHOW_LEVEL |
| 22 | bool |
| 23 | |
Thomas Gleixner | 7b6ef12 | 2014-05-07 15:44:05 +0000 | [diff] [blame] | 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 | |
Thomas Gleixner | c68fd4f | 2011-03-08 19:52:55 +0100 | [diff] [blame] | 29 | # Support for delayed migration from interrupt context |
Thomas Gleixner | d9817eb | 2010-09-27 12:45:59 +0000 | [diff] [blame] | 30 | config GENERIC_PENDING_IRQ |
Jan Beulich | fd4afaf | 2011-02-17 13:39:05 +0000 | [diff] [blame] | 31 | bool |
Thomas Gleixner | d9817eb | 2010-09-27 12:45:59 +0000 | [diff] [blame] | 32 | |
Yang Yingliang | f1e0bb0 | 2015-09-24 17:32:13 +0800 | [diff] [blame] | 33 | # Support for generic irq migrating off cpu before the cpu is offline. |
| 34 | config GENERIC_IRQ_MIGRATION |
| 35 | bool |
| 36 | |
Thomas Gleixner | c68fd4f | 2011-03-08 19:52:55 +0100 | [diff] [blame] | 37 | # Alpha specific irq affinity mechanism |
Thomas Gleixner | d9817eb | 2010-09-27 12:45:59 +0000 | [diff] [blame] | 38 | config AUTO_IRQ_AFFINITY |
Jan Beulich | fd4afaf | 2011-02-17 13:39:05 +0000 | [diff] [blame] | 39 | bool |
Thomas Gleixner | d9817eb | 2010-09-27 12:45:59 +0000 | [diff] [blame] | 40 | |
Thomas Gleixner | c68fd4f | 2011-03-08 19:52:55 +0100 | [diff] [blame] | 41 | # Tasklet based software resend for pending interrupts on enable_irq() |
Thomas Gleixner | d9817eb | 2010-09-27 12:45:59 +0000 | [diff] [blame] | 42 | config HARDIRQS_SW_RESEND |
Jan Beulich | fd4afaf | 2011-02-17 13:39:05 +0000 | [diff] [blame] | 43 | bool |
Thomas Gleixner | d9817eb | 2010-09-27 12:45:59 +0000 | [diff] [blame] | 44 | |
Thomas Gleixner | c68fd4f | 2011-03-08 19:52:55 +0100 | [diff] [blame] | 45 | # Preflow handler support for fasteoi (sparc64) |
Thomas Gleixner | 7812957 | 2011-02-10 15:14:20 +0100 | [diff] [blame] | 46 | config IRQ_PREFLOW_FASTEOI |
Jan Beulich | fd4afaf | 2011-02-17 13:39:05 +0000 | [diff] [blame] | 47 | bool |
Thomas Gleixner | 7812957 | 2011-02-10 15:14:20 +0100 | [diff] [blame] | 48 | |
Thomas Gleixner | 0521c8f | 2011-03-28 16:13:24 +0200 | [diff] [blame] | 49 | # Edge style eoi based handler (cell) |
| 50 | config IRQ_EDGE_EOI_HANDLER |
| 51 | bool |
| 52 | |
Thomas Gleixner | c42321c | 2011-05-02 18:16:22 +0200 | [diff] [blame] | 53 | # Generic configurable interrupt chip implementation |
| 54 | config GENERIC_IRQ_CHIP |
| 55 | bool |
Nitin A Kamble | 923fa4e | 2014-01-30 16:50:10 -0800 | [diff] [blame] | 56 | select IRQ_DOMAIN |
Thomas Gleixner | c42321c | 2011-05-02 18:16:22 +0200 | [diff] [blame] | 57 | |
Grant Likely | 08a543a | 2011-07-26 03:19:06 -0600 | [diff] [blame] | 58 | # Generic irq_domain hw <--> linux irq number translation |
| 59 | config IRQ_DOMAIN |
| 60 | bool |
| 61 | |
Jiang Liu | f8264e3 | 2014-11-06 22:20:14 +0800 | [diff] [blame] | 62 | # Support for hierarchical irq domains |
| 63 | config IRQ_DOMAIN_HIERARCHY |
| 64 | bool |
| 65 | select IRQ_DOMAIN |
| 66 | |
Qais Yousef | 379b656 | 2015-12-08 13:20:14 +0000 | [diff] [blame] | 67 | # Generic IRQ IPI support |
| 68 | config GENERIC_IRQ_IPI |
| 69 | bool |
| 70 | |
Jiang Liu | f3cf8bb | 2014-11-12 11:39:03 +0100 | [diff] [blame] | 71 | # Generic MSI interrupt support |
| 72 | config GENERIC_MSI_IRQ |
| 73 | bool |
| 74 | |
| 75 | # Generic MSI hierarchical interrupt domain support |
| 76 | config GENERIC_MSI_IRQ_DOMAIN |
| 77 | bool |
| 78 | select IRQ_DOMAIN_HIERARCHY |
| 79 | select GENERIC_MSI_IRQ |
| 80 | |
Marc Zyngier | 76ba59f | 2014-08-26 11:03:16 +0100 | [diff] [blame] | 81 | config HANDLE_DOMAIN_IRQ |
| 82 | bool |
| 83 | |
Grant Likely | 092b2fb | 2012-03-29 14:10:30 -0600 | [diff] [blame] | 84 | config IRQ_DOMAIN_DEBUG |
| 85 | bool "Expose hardware/virtual IRQ mapping via debugfs" |
| 86 | depends on IRQ_DOMAIN && DEBUG_FS |
| 87 | help |
| 88 | This option will show the mapping relationship between hardware irq |
| 89 | numbers and Linux irq numbers. The mapping is exposed via debugfs |
Mika Westerberg | ac5830a | 2012-04-10 15:25:42 +0300 | [diff] [blame] | 90 | in the file "irq_domain_mapping". |
Grant Likely | 092b2fb | 2012-03-29 14:10:30 -0600 | [diff] [blame] | 91 | |
| 92 | If you don't know what this means you don't need it. |
| 93 | |
Thomas Gleixner | c68fd4f | 2011-03-08 19:52:55 +0100 | [diff] [blame] | 94 | # Support forced irq threading |
Thomas Gleixner | 8d32a30 | 2011-02-23 23:52:23 +0000 | [diff] [blame] | 95 | config IRQ_FORCED_THREADING |
| 96 | bool |
| 97 | |
Thomas Gleixner | d9817eb | 2010-09-27 12:45:59 +0000 | [diff] [blame] | 98 | config SPARSE_IRQ |
Rob Herring | 2ed86b1 | 2012-01-25 20:02:40 -0600 | [diff] [blame] | 99 | bool "Support sparse irq numbering" if MAY_HAVE_SPARSE_IRQ |
Thomas Gleixner | d9817eb | 2010-09-27 12:45:59 +0000 | [diff] [blame] | 100 | ---help--- |
| 101 | |
| 102 | Sparse irq numbering is useful for distro kernels that want |
| 103 | to define a high CONFIG_NR_CPUS value but still want to have |
| 104 | low kernel memory footprint on smaller machines. |
| 105 | |
| 106 | ( Sparse irqs can also be beneficial on NUMA boxes, as they spread |
| 107 | out the interrupt descriptors in a more NUMA-friendly way. ) |
| 108 | |
| 109 | If you don't know what to do here, say N. |
| 110 | |
| 111 | endmenu |