Messages in this thread | | | Date | Fri, 27 May 2022 19:10:55 +0530 | Subject | Re: RFC: Memory Tiering Kernel Interfaces (v3) | From | Aneesh Kumar K V <> |
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On 5/27/22 2:52 AM, Wei Xu wrote:
> The order of memory tiers is determined by their rank values, not by > their memtier device names. > > - /sys/devices/system/memtier/possible > > Format: ordered list of "memtier(rank)" > Example: 0(64), 1(128), 2(192) > > Read-only. When read, list all available memory tiers and their > associated ranks, ordered by the rank values (from the highest > tier to the lowest tier). >
Did we discuss the need for this? I haven't done this in the patch series I sent across. We do have /sys/devices/system/memtier/default_rank which should allow user to identify the default rank to which memory would get added via hotplug if the NUMA node is not part of any memory tier.
-aneesh
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