Re: [PATCH v4] mm/demotion: Expose memory tier details via sysfs

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"Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxx> writes:

> This patch adds /sys/devices/virtual/memory_tiering/ where all memory tier
> related details can be found. All allocated memory tiers will be listed
> there as /sys/devices/virtual/memory_tiering/memory_tierN/
>
> The nodes which are part of a specific memory tier can be listed via
> /sys/devices/virtual/memory_tiering/memory_tierN/nodes

It appears that XXXs is used for mask while XXXs_list is used for list?
For example,

# cat /sys/devices/system/cpu/cpu2/topology/core_cpus
0,00100004
# cat /sys/devices/system/cpu/cpu2/topology/core_cpus_list
2,20

It's better to follow the this convention?

> A directory hierarchy looks like
> :/sys/devices/virtual/memory_tiering$ tree memory_tier4/
> memory_tier4/
> ├── nodes
> ├── subsystem -> ../../../../bus/memory_tiering
> └── uevent
>
> :/sys/devices/virtual/memory_tiering$ cat memory_tier4/nodes
> 0,2
>
> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxx>

Best Regards,
Huang, Ying

[snip]





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