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| author | Ganapatrao Kulkarni <gkulkarni@caviumnetworks.com> | 2016-04-08 15:50:27 -0700 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2016-04-15 18:06:09 +0100 |
| commit | 1a2db300348b799479d2d22b84d51b27ad0458c7 (patch) | |
| tree | c9e3329f00575143dae72e14725b9e48161e34d7 /arch/arm64/Kconfig | |
| parent | 3194ac6e66cc7a00c1fa9fecf33a7c376b489497 (diff) | |
| download | lwn-1a2db300348b799479d2d22b84d51b27ad0458c7.tar.gz lwn-1a2db300348b799479d2d22b84d51b27ad0458c7.zip | |
arm64, numa: Add NUMA support for arm64 platforms.
Attempt to get the memory and CPU NUMA node via of_numa. If that
fails, default the dummy NUMA node and map all memory and CPUs to node
0.
Tested-by: Shannon Zhao <shannon.zhao@linaro.org>
Reviewed-by: Robert Richter <rrichter@cavium.com>
Signed-off-by: Ganapatrao Kulkarni <gkulkarni@caviumnetworks.com>
Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/Kconfig')
| -rw-r--r-- | arch/arm64/Kconfig | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 4f436220384f..99f9b5554bd1 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -76,6 +76,7 @@ config ARM64 select HAVE_HW_BREAKPOINT if PERF_EVENTS select HAVE_IRQ_TIME_ACCOUNTING select HAVE_MEMBLOCK + select HAVE_MEMBLOCK_NODE_MAP if NUMA select HAVE_PATA_PLATFORM select HAVE_PERF_EVENTS select HAVE_PERF_REGS @@ -98,6 +99,7 @@ config ARM64 select SYSCTL_EXCEPTION_TRACE select HAVE_CONTEXT_TRACKING select HAVE_ARM_SMCCC + select OF_NUMA if NUMA && OF help ARM 64-bit (AArch64) Linux support. @@ -546,6 +548,30 @@ config HOTPLUG_CPU Say Y here to experiment with turning CPUs off and on. CPUs can be controlled through /sys/devices/system/cpu. +# Common NUMA Features +config NUMA + bool "Numa Memory Allocation and Scheduler Support" + depends on SMP + help + Enable NUMA (Non Uniform Memory Access) support. + + The kernel will try to allocate memory used by a CPU on the + local memory of the CPU and add some more + NUMA awareness to the kernel. + +config NODES_SHIFT + int "Maximum NUMA Nodes (as a power of 2)" + range 1 10 + default "2" + depends on NEED_MULTIPLE_NODES + help + Specify the maximum number of NUMA Nodes available on the target + system. Increases memory reserved to accommodate various tables. + +config USE_PERCPU_NUMA_NODE_ID + def_bool y + depends on NUMA + source kernel/Kconfig.preempt source kernel/Kconfig.hz |