On Mon, Feb 06, 2017 at 11:35:29PM +0800, Wei Yang wrote:
> numa_nodemask_from_meminfo() is called to set bit according to
> numa_meminfo. While the only two places for this call is used to set proper
> bit to a copy of numa_nodes_parsed from numa_meminfo. With current code
> path, those numa node information in numa_meminfo is a subset of
> numa_nodes_parsed. So it is not necessary to set the bits again.
>
> The following is a code path analysis to prove the numa node information in
> numa_meminfo is a subset of numa_nodes_parsed.
>
> x86_numa_init()
> numa_init()
> Case 1
> acpi_numa_init()
> acpi_parse_memory_affinity()
> numa_add_memblk()
> node_set(numa_nodes_parsed)
> acpi_parse_slit()
> numa_nodemask_from_meminfo()
>
> Case 2
> amd_numa_init()
> numa_add_memblk()
> node_set(numa_nodes_parsed)
>
> Case 3
> dummy_numa_init()
> node_set(numa_nodes_parsed)
> numa_add_memblk()
>
> numa_register_memblks()
> numa_nodemask_from_meminfo()
What about of_numa_parse_memory_nodes() ?
--
Regards/Gruss,
Boris.
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