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Diffstat (limited to 'arch/powerpc/Kconfig')
| -rw-r--r-- | arch/powerpc/Kconfig | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 3aa79f8..61abde1 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -377,6 +377,19 @@ config IRQ_ALL_CPUS CPU. Generally saying Y is safe, although some problems have been reported with SMP Power Macintoshes with this option enabled. +config SPARSE_IRQ + bool "Support sparse irq numbering" + default y + help + This enables support for sparse irqs. This 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 irq_desc[] array in a more NUMA-friendly way. ) + + If you don't know what to do here, say Y. + config NUMA bool "NUMA support" depends on PPC64 |