On Tue, Oct 20, 2015 at 6:45 PM, Ganapatrao Kulkarni
<[email protected]> wrote:
> Adding numa dt binding support for arm64 based platforms.
> dt node parsing for numa topology is done using device property
> proximity and device node distance-map.
>
> Reviewed-by: Robert Richter <[email protected]>
> Signed-off-by: Ganapatrao Kulkarni <[email protected]>
> ---
> arch/arm64/Kconfig | 10 ++
> arch/arm64/include/asm/numa.h | 10 ++
> arch/arm64/kernel/Makefile | 1 +
> arch/arm64/kernel/of_numa.c | 221
> ++++++++++++++++++++++++++++++++++++++++++
> arch/arm64/kernel/smp.c | 1 +
> arch/arm64/mm/numa.c | 10 +-
> 6 files changed, 252 insertions(+), 1 deletion(-)
> create mode 100644 arch/arm64/kernel/of_numa.c
>
> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> index 0f9cdc7..6cf8d20 100644
> --- a/arch/arm64/Kconfig
> +++ b/arch/arm64/Kconfig
> @@ -426,6 +426,16 @@ config NUMA
> local memory controller of the CPU and add some more
> NUMA awareness to the kernel.
>
> +config OF_NUMA
> + bool "Device Tree NUMA support"
> + depends on NUMA
> + depends on OF
> + default y
> + help
> + Enable Device Tree NUMA support.
> + This enables the numa mapping of cpu, memory, io and
> + inter node distances using dt bindings.
Enabling the above config option can cause numa_init() warning in
numa-less arm64 system, please see the following report:
https://bugs.launchpad.net/bugs/1509221
Thanks,
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