Messages in this thread Patch in this message | | | From | Andrea Arcangeli <> | Subject | [PATCH 2/3] arm64: select CPUMASK_OFFSTACK if NUMA | Date | Sun, 23 Feb 2020 14:25:19 -0500 |
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It's unclear why normally CPUMASK_OFFSTACK can only be manually configured "if DEBUG_PER_CPU_MAPS" which is not an option meant to be enabled on enterprise arm64 kernels.
The default enterprise kernels NR_CPUS is 4096 which is fairly large. So it'll save some RAM and it'll increase reliability to select CPUMASK_OFFSET at least when NUMA is selected and a large NR_CPUS is to be expected.
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> --- arch/arm64/Kconfig | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 0b30e884e088..882887e65394 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -955,6 +955,7 @@ config NUMA bool "Numa Memory Allocation and Scheduler Support" select ACPI_NUMA if ACPI select OF_NUMA + select CPUMASK_OFFSTACK help Enable NUMA (Non Uniform Memory Access) support.
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