diff options
Diffstat (limited to 'kernel/irq/Kconfig')
| -rw-r--r-- | kernel/irq/Kconfig | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/kernel/irq/Kconfig b/kernel/irq/Kconfig new file mode 100644 index 00000000..d1a758bc --- /dev/null +++ b/kernel/irq/Kconfig @@ -0,0 +1,87 @@ +# Select this to activate the generic irq options below +config HAVE_GENERIC_HARDIRQS + bool + +if HAVE_GENERIC_HARDIRQS +menu "IRQ subsystem" +# +# Interrupt subsystem related configuration options +# +config GENERIC_HARDIRQS + def_bool y + +# Options selectable by the architecture code + +# Make sparse irq Kconfig switch below available +config MAY_HAVE_SPARSE_IRQ + bool + +# Enable the generic irq autoprobe mechanism +config GENERIC_IRQ_PROBE + bool + +# Use the generic /proc/interrupts implementation +config GENERIC_IRQ_SHOW + bool + +# Print level/edge extra information +config GENERIC_IRQ_SHOW_LEVEL + bool + +# Support for delayed migration from interrupt context +config GENERIC_PENDING_IRQ + bool + +# Alpha specific irq affinity mechanism +config AUTO_IRQ_AFFINITY + bool + +# Tasklet based software resend for pending interrupts on enable_irq() +config HARDIRQS_SW_RESEND + bool + +# Preflow handler support for fasteoi (sparc64) +config IRQ_PREFLOW_FASTEOI + bool + +# Edge style eoi based handler (cell) +config IRQ_EDGE_EOI_HANDLER + bool + +# Generic configurable interrupt chip implementation +config GENERIC_IRQ_CHIP + bool + +# Generic irq_domain hw <--> linux irq number translation +config IRQ_DOMAIN + bool + +config IRQ_DOMAIN_DEBUG + bool "Expose hardware/virtual IRQ mapping via debugfs" + depends on IRQ_DOMAIN && DEBUG_FS + help + This option will show the mapping relationship between hardware irq + numbers and Linux irq numbers. The mapping is exposed via debugfs + in the file "irq_domain_mapping". + + If you don't know what this means you don't need it. + +# Support forced irq threading +config IRQ_FORCED_THREADING + bool + +config SPARSE_IRQ + bool "Support sparse irq numbering" if MAY_HAVE_SPARSE_IRQ + ---help--- + + Sparse irq numbering is useful for distro kernels that want + to define a high CONFIG_NR_CPUS value but still want to have + low kernel memory footprint on smaller machines. + + ( Sparse irqs can also be beneficial on NUMA boxes, as they spread + out the interrupt descriptors in a more NUMA-friendly way. ) + + If you don't know what to do here, say N. + +endmenu +endif |