Re: [PATCH v6 3/4] arm64/arm, numa, dt: adding numa dt binding implementation for arm64 platforms

On Mon, Oct 26, 2015 at 12:53 PM, Ming Lei [off-list ref] wrote:

On Mon, Oct 26, 2015 at 11:50 AM, Ganapatrao Kulkarni
[off-list ref] wrote:

quoted

On Mon, Oct 26, 2015 at 7:14 AM, Ming Lei [off-list ref] wrote:

quoted

On Tue, Oct 20, 2015 at 6:45 PM, Ganapatrao Kulkarni
[off-list ref] wrote:

quoted

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 <rrichter-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
Signed-off-by: Ganapatrao Kulkarni <redacted>
---
 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:

this is taken care. which version are you using?

V5.

The issue persists on V6 too, so looks V7 is needed.

quoted

quoted

          https://bugs.launchpad.net/bugs/1509221

Thanks,

Thanks
Ganapat

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